diff options
Diffstat (limited to 'node_modules/bson/lib')
20 files changed, 6425 insertions, 0 deletions
diff --git a/node_modules/bson/lib/bson/binary.js b/node_modules/bson/lib/bson/binary.js new file mode 100644 index 0000000..6d190bc --- /dev/null +++ b/node_modules/bson/lib/bson/binary.js @@ -0,0 +1,384 @@ +/** + * Module dependencies. + * @ignore + */ + +// Test if we're in Node via presence of "global" not absence of "window" +// to support hybrid environments like Electron +if (typeof global !== 'undefined') { + var Buffer = require('buffer').Buffer; // TODO just use global Buffer +} + +var utils = require('./parser/utils'); + +/** + * A class representation of the BSON Binary type. + * + * Sub types + * - **BSON.BSON_BINARY_SUBTYPE_DEFAULT**, default BSON type. + * - **BSON.BSON_BINARY_SUBTYPE_FUNCTION**, BSON function type. + * - **BSON.BSON_BINARY_SUBTYPE_BYTE_ARRAY**, BSON byte array type. + * - **BSON.BSON_BINARY_SUBTYPE_UUID**, BSON uuid type. + * - **BSON.BSON_BINARY_SUBTYPE_MD5**, BSON md5 type. + * - **BSON.BSON_BINARY_SUBTYPE_USER_DEFINED**, BSON user defined type. + * + * @class + * @param {Buffer} buffer a buffer object containing the binary data. + * @param {Number} [subType] the option binary type. + * @return {Binary} + */ +function Binary(buffer, subType) { + if (!(this instanceof Binary)) return new Binary(buffer, subType); + + if ( + buffer != null && + !(typeof buffer === 'string') && + !Buffer.isBuffer(buffer) && + !(buffer instanceof Uint8Array) && + !Array.isArray(buffer) + ) { + throw new Error('only String, Buffer, Uint8Array or Array accepted'); + } + + this._bsontype = 'Binary'; + + if (buffer instanceof Number) { + this.sub_type = buffer; + this.position = 0; + } else { + this.sub_type = subType == null ? BSON_BINARY_SUBTYPE_DEFAULT : subType; + this.position = 0; + } + + if (buffer != null && !(buffer instanceof Number)) { + // Only accept Buffer, Uint8Array or Arrays + if (typeof buffer === 'string') { + // Different ways of writing the length of the string for the different types + if (typeof Buffer !== 'undefined') { + this.buffer = utils.toBuffer(buffer); + } else if ( + typeof Uint8Array !== 'undefined' || + Object.prototype.toString.call(buffer) === '[object Array]' + ) { + this.buffer = writeStringToArray(buffer); + } else { + throw new Error('only String, Buffer, Uint8Array or Array accepted'); + } + } else { + this.buffer = buffer; + } + this.position = buffer.length; + } else { + if (typeof Buffer !== 'undefined') { + this.buffer = utils.allocBuffer(Binary.BUFFER_SIZE); + } else if (typeof Uint8Array !== 'undefined') { + this.buffer = new Uint8Array(new ArrayBuffer(Binary.BUFFER_SIZE)); + } else { + this.buffer = new Array(Binary.BUFFER_SIZE); + } + // Set position to start of buffer + this.position = 0; + } +} + +/** + * Updates this binary with byte_value. + * + * @method + * @param {string} byte_value a single byte we wish to write. + */ +Binary.prototype.put = function put(byte_value) { + // If it's a string and a has more than one character throw an error + if (byte_value['length'] != null && typeof byte_value !== 'number' && byte_value.length !== 1) + throw new Error('only accepts single character String, Uint8Array or Array'); + if ((typeof byte_value !== 'number' && byte_value < 0) || byte_value > 255) + throw new Error('only accepts number in a valid unsigned byte range 0-255'); + + // Decode the byte value once + var decoded_byte = null; + if (typeof byte_value === 'string') { + decoded_byte = byte_value.charCodeAt(0); + } else if (byte_value['length'] != null) { + decoded_byte = byte_value[0]; + } else { + decoded_byte = byte_value; + } + + if (this.buffer.length > this.position) { + this.buffer[this.position++] = decoded_byte; + } else { + if (typeof Buffer !== 'undefined' && Buffer.isBuffer(this.buffer)) { + // Create additional overflow buffer + var buffer = utils.allocBuffer(Binary.BUFFER_SIZE + this.buffer.length); + // Combine the two buffers together + this.buffer.copy(buffer, 0, 0, this.buffer.length); + this.buffer = buffer; + this.buffer[this.position++] = decoded_byte; + } else { + buffer = null; + // Create a new buffer (typed or normal array) + if (Object.prototype.toString.call(this.buffer) === '[object Uint8Array]') { + buffer = new Uint8Array(new ArrayBuffer(Binary.BUFFER_SIZE + this.buffer.length)); + } else { + buffer = new Array(Binary.BUFFER_SIZE + this.buffer.length); + } + + // We need to copy all the content to the new array + for (var i = 0; i < this.buffer.length; i++) { + buffer[i] = this.buffer[i]; + } + + // Reassign the buffer + this.buffer = buffer; + // Write the byte + this.buffer[this.position++] = decoded_byte; + } + } +}; + +/** + * Writes a buffer or string to the binary. + * + * @method + * @param {(Buffer|string)} string a string or buffer to be written to the Binary BSON object. + * @param {number} offset specify the binary of where to write the content. + * @return {null} + */ +Binary.prototype.write = function write(string, offset) { + offset = typeof offset === 'number' ? offset : this.position; + + // If the buffer is to small let's extend the buffer + if (this.buffer.length < offset + string.length) { + var buffer = null; + // If we are in node.js + if (typeof Buffer !== 'undefined' && Buffer.isBuffer(this.buffer)) { + buffer = utils.allocBuffer(this.buffer.length + string.length); + this.buffer.copy(buffer, 0, 0, this.buffer.length); + } else if (Object.prototype.toString.call(this.buffer) === '[object Uint8Array]') { + // Create a new buffer + buffer = new Uint8Array(new ArrayBuffer(this.buffer.length + string.length)); + // Copy the content + for (var i = 0; i < this.position; i++) { + buffer[i] = this.buffer[i]; + } + } + + // Assign the new buffer + this.buffer = buffer; + } + + if (typeof Buffer !== 'undefined' && Buffer.isBuffer(string) && Buffer.isBuffer(this.buffer)) { + string.copy(this.buffer, offset, 0, string.length); + this.position = offset + string.length > this.position ? offset + string.length : this.position; + // offset = string.length + } else if ( + typeof Buffer !== 'undefined' && + typeof string === 'string' && + Buffer.isBuffer(this.buffer) + ) { + this.buffer.write(string, offset, 'binary'); + this.position = offset + string.length > this.position ? offset + string.length : this.position; + // offset = string.length; + } else if ( + Object.prototype.toString.call(string) === '[object Uint8Array]' || + (Object.prototype.toString.call(string) === '[object Array]' && typeof string !== 'string') + ) { + for (i = 0; i < string.length; i++) { + this.buffer[offset++] = string[i]; + } + + this.position = offset > this.position ? offset : this.position; + } else if (typeof string === 'string') { + for (i = 0; i < string.length; i++) { + this.buffer[offset++] = string.charCodeAt(i); + } + + this.position = offset > this.position ? offset : this.position; + } +}; + +/** + * Reads **length** bytes starting at **position**. + * + * @method + * @param {number} position read from the given position in the Binary. + * @param {number} length the number of bytes to read. + * @return {Buffer} + */ +Binary.prototype.read = function read(position, length) { + length = length && length > 0 ? length : this.position; + + // Let's return the data based on the type we have + if (this.buffer['slice']) { + return this.buffer.slice(position, position + length); + } else { + // Create a buffer to keep the result + var buffer = + typeof Uint8Array !== 'undefined' + ? new Uint8Array(new ArrayBuffer(length)) + : new Array(length); + for (var i = 0; i < length; i++) { + buffer[i] = this.buffer[position++]; + } + } + // Return the buffer + return buffer; +}; + +/** + * Returns the value of this binary as a string. + * + * @method + * @return {string} + */ +Binary.prototype.value = function value(asRaw) { + asRaw = asRaw == null ? false : asRaw; + + // Optimize to serialize for the situation where the data == size of buffer + if ( + asRaw && + typeof Buffer !== 'undefined' && + Buffer.isBuffer(this.buffer) && + this.buffer.length === this.position + ) + return this.buffer; + + // If it's a node.js buffer object + if (typeof Buffer !== 'undefined' && Buffer.isBuffer(this.buffer)) { + return asRaw + ? this.buffer.slice(0, this.position) + : this.buffer.toString('binary', 0, this.position); + } else { + if (asRaw) { + // we support the slice command use it + if (this.buffer['slice'] != null) { + return this.buffer.slice(0, this.position); + } else { + // Create a new buffer to copy content to + var newBuffer = + Object.prototype.toString.call(this.buffer) === '[object Uint8Array]' + ? new Uint8Array(new ArrayBuffer(this.position)) + : new Array(this.position); + // Copy content + for (var i = 0; i < this.position; i++) { + newBuffer[i] = this.buffer[i]; + } + // Return the buffer + return newBuffer; + } + } else { + return convertArraytoUtf8BinaryString(this.buffer, 0, this.position); + } + } +}; + +/** + * Length. + * + * @method + * @return {number} the length of the binary. + */ +Binary.prototype.length = function length() { + return this.position; +}; + +/** + * @ignore + */ +Binary.prototype.toJSON = function() { + return this.buffer != null ? this.buffer.toString('base64') : ''; +}; + +/** + * @ignore + */ +Binary.prototype.toString = function(format) { + return this.buffer != null ? this.buffer.slice(0, this.position).toString(format) : ''; +}; + +/** + * Binary default subtype + * @ignore + */ +var BSON_BINARY_SUBTYPE_DEFAULT = 0; + +/** + * @ignore + */ +var writeStringToArray = function(data) { + // Create a buffer + var buffer = + typeof Uint8Array !== 'undefined' + ? new Uint8Array(new ArrayBuffer(data.length)) + : new Array(data.length); + // Write the content to the buffer + for (var i = 0; i < data.length; i++) { + buffer[i] = data.charCodeAt(i); + } + // Write the string to the buffer + return buffer; +}; + +/** + * Convert Array ot Uint8Array to Binary String + * + * @ignore + */ +var convertArraytoUtf8BinaryString = function(byteArray, startIndex, endIndex) { + var result = ''; + for (var i = startIndex; i < endIndex; i++) { + result = result + String.fromCharCode(byteArray[i]); + } + return result; +}; + +Binary.BUFFER_SIZE = 256; + +/** + * Default BSON type + * + * @classconstant SUBTYPE_DEFAULT + **/ +Binary.SUBTYPE_DEFAULT = 0; +/** + * Function BSON type + * + * @classconstant SUBTYPE_DEFAULT + **/ +Binary.SUBTYPE_FUNCTION = 1; +/** + * Byte Array BSON type + * + * @classconstant SUBTYPE_DEFAULT + **/ +Binary.SUBTYPE_BYTE_ARRAY = 2; +/** + * OLD UUID BSON type + * + * @classconstant SUBTYPE_DEFAULT + **/ +Binary.SUBTYPE_UUID_OLD = 3; +/** + * UUID BSON type + * + * @classconstant SUBTYPE_DEFAULT + **/ +Binary.SUBTYPE_UUID = 4; +/** + * MD5 BSON type + * + * @classconstant SUBTYPE_DEFAULT + **/ +Binary.SUBTYPE_MD5 = 5; +/** + * User BSON type + * + * @classconstant SUBTYPE_DEFAULT + **/ +Binary.SUBTYPE_USER_DEFINED = 128; + +/** + * Expose. + */ +module.exports = Binary; +module.exports.Binary = Binary; diff --git a/node_modules/bson/lib/bson/bson.js b/node_modules/bson/lib/bson/bson.js new file mode 100644 index 0000000..912c5b9 --- /dev/null +++ b/node_modules/bson/lib/bson/bson.js @@ -0,0 +1,386 @@ +'use strict'; + +var Map = require('./map'), + Long = require('./long'), + Double = require('./double'), + Timestamp = require('./timestamp'), + ObjectID = require('./objectid'), + BSONRegExp = require('./regexp'), + Symbol = require('./symbol'), + Int32 = require('./int_32'), + Code = require('./code'), + Decimal128 = require('./decimal128'), + MinKey = require('./min_key'), + MaxKey = require('./max_key'), + DBRef = require('./db_ref'), + Binary = require('./binary'); + +// Parts of the parser +var deserialize = require('./parser/deserializer'), + serializer = require('./parser/serializer'), + calculateObjectSize = require('./parser/calculate_size'), + utils = require('./parser/utils'); + +/** + * @ignore + * @api private + */ +// Default Max Size +var MAXSIZE = 1024 * 1024 * 17; + +// Current Internal Temporary Serialization Buffer +var buffer = utils.allocBuffer(MAXSIZE); + +var BSON = function() {}; + +/** + * Serialize a Javascript object. + * + * @param {Object} object the Javascript object to serialize. + * @param {Boolean} [options.checkKeys] the serializer will check if keys are valid. + * @param {Boolean} [options.serializeFunctions=false] serialize the javascript functions **(default:false)**. + * @param {Boolean} [options.ignoreUndefined=true] ignore undefined fields **(default:true)**. + * @param {Number} [options.minInternalBufferSize=1024*1024*17] minimum size of the internal temporary serialization buffer **(default:1024*1024*17)**. + * @return {Buffer} returns the Buffer object containing the serialized object. + * @api public + */ +BSON.prototype.serialize = function serialize(object, options) { + options = options || {}; + // Unpack the options + var checkKeys = typeof options.checkKeys === 'boolean' ? options.checkKeys : false; + var serializeFunctions = + typeof options.serializeFunctions === 'boolean' ? options.serializeFunctions : false; + var ignoreUndefined = + typeof options.ignoreUndefined === 'boolean' ? options.ignoreUndefined : true; + var minInternalBufferSize = + typeof options.minInternalBufferSize === 'number' ? options.minInternalBufferSize : MAXSIZE; + + // Resize the internal serialization buffer if needed + if (buffer.length < minInternalBufferSize) { + buffer = utils.allocBuffer(minInternalBufferSize); + } + + // Attempt to serialize + var serializationIndex = serializer( + buffer, + object, + checkKeys, + 0, + 0, + serializeFunctions, + ignoreUndefined, + [] + ); + // Create the final buffer + var finishedBuffer = utils.allocBuffer(serializationIndex); + // Copy into the finished buffer + buffer.copy(finishedBuffer, 0, 0, finishedBuffer.length); + // Return the buffer + return finishedBuffer; +}; + +/** + * Serialize a Javascript object using a predefined Buffer and index into the buffer, useful when pre-allocating the space for serialization. + * + * @param {Object} object the Javascript object to serialize. + * @param {Buffer} buffer the Buffer you pre-allocated to store the serialized BSON object. + * @param {Boolean} [options.checkKeys] the serializer will check if keys are valid. + * @param {Boolean} [options.serializeFunctions=false] serialize the javascript functions **(default:false)**. + * @param {Boolean} [options.ignoreUndefined=true] ignore undefined fields **(default:true)**. + * @param {Number} [options.index] the index in the buffer where we wish to start serializing into. + * @return {Number} returns the index pointing to the last written byte in the buffer. + * @api public + */ +BSON.prototype.serializeWithBufferAndIndex = function(object, finalBuffer, options) { + options = options || {}; + // Unpack the options + var checkKeys = typeof options.checkKeys === 'boolean' ? options.checkKeys : false; + var serializeFunctions = + typeof options.serializeFunctions === 'boolean' ? options.serializeFunctions : false; + var ignoreUndefined = + typeof options.ignoreUndefined === 'boolean' ? options.ignoreUndefined : true; + var startIndex = typeof options.index === 'number' ? options.index : 0; + + // Attempt to serialize + var serializationIndex = serializer( + finalBuffer, + object, + checkKeys, + startIndex || 0, + 0, + serializeFunctions, + ignoreUndefined + ); + + // Return the index + return serializationIndex - 1; +}; + +/** + * Deserialize data as BSON. + * + * @param {Buffer} buffer the buffer containing the serialized set of BSON documents. + * @param {Object} [options.evalFunctions=false] evaluate functions in the BSON document scoped to the object deserialized. + * @param {Object} [options.cacheFunctions=false] cache evaluated functions for reuse. + * @param {Object} [options.cacheFunctionsCrc32=false] use a crc32 code for caching, otherwise use the string of the function. + * @param {Object} [options.promoteLongs=true] when deserializing a Long will fit it into a Number if it's smaller than 53 bits + * @param {Object} [options.promoteBuffers=false] when deserializing a Binary will return it as a node.js Buffer instance. + * @param {Object} [options.promoteValues=false] when deserializing will promote BSON values to their Node.js closest equivalent types. + * @param {Object} [options.fieldsAsRaw=null] allow to specify if there what fields we wish to return as unserialized raw buffer. + * @param {Object} [options.bsonRegExp=false] return BSON regular expressions as BSONRegExp instances. + * @return {Object} returns the deserialized Javascript Object. + * @api public + */ +BSON.prototype.deserialize = function(buffer, options) { + return deserialize(buffer, options); +}; + +/** + * Calculate the bson size for a passed in Javascript object. + * + * @param {Object} object the Javascript object to calculate the BSON byte size for. + * @param {Boolean} [options.serializeFunctions=false] serialize the javascript functions **(default:false)**. + * @param {Boolean} [options.ignoreUndefined=true] ignore undefined fields **(default:true)**. + * @return {Number} returns the number of bytes the BSON object will take up. + * @api public + */ +BSON.prototype.calculateObjectSize = function(object, options) { + options = options || {}; + + var serializeFunctions = + typeof options.serializeFunctions === 'boolean' ? options.serializeFunctions : false; + var ignoreUndefined = + typeof options.ignoreUndefined === 'boolean' ? options.ignoreUndefined : true; + + return calculateObjectSize(object, serializeFunctions, ignoreUndefined); +}; + +/** + * Deserialize stream data as BSON documents. + * + * @param {Buffer} data the buffer containing the serialized set of BSON documents. + * @param {Number} startIndex the start index in the data Buffer where the deserialization is to start. + * @param {Number} numberOfDocuments number of documents to deserialize. + * @param {Array} documents an array where to store the deserialized documents. + * @param {Number} docStartIndex the index in the documents array from where to start inserting documents. + * @param {Object} [options] additional options used for the deserialization. + * @param {Object} [options.evalFunctions=false] evaluate functions in the BSON document scoped to the object deserialized. + * @param {Object} [options.cacheFunctions=false] cache evaluated functions for reuse. + * @param {Object} [options.cacheFunctionsCrc32=false] use a crc32 code for caching, otherwise use the string of the function. + * @param {Object} [options.promoteLongs=true] when deserializing a Long will fit it into a Number if it's smaller than 53 bits + * @param {Object} [options.promoteBuffers=false] when deserializing a Binary will return it as a node.js Buffer instance. + * @param {Object} [options.promoteValues=false] when deserializing will promote BSON values to their Node.js closest equivalent types. + * @param {Object} [options.fieldsAsRaw=null] allow to specify if there what fields we wish to return as unserialized raw buffer. + * @param {Object} [options.bsonRegExp=false] return BSON regular expressions as BSONRegExp instances. + * @return {Number} returns the next index in the buffer after deserialization **x** numbers of documents. + * @api public + */ +BSON.prototype.deserializeStream = function( + data, + startIndex, + numberOfDocuments, + documents, + docStartIndex, + options +) { + options = options != null ? options : {}; + var index = startIndex; + // Loop over all documents + for (var i = 0; i < numberOfDocuments; i++) { + // Find size of the document + var size = + data[index] | (data[index + 1] << 8) | (data[index + 2] << 16) | (data[index + 3] << 24); + // Update options with index + options['index'] = index; + // Parse the document at this point + documents[docStartIndex + i] = this.deserialize(data, options); + // Adjust index by the document size + index = index + size; + } + + // Return object containing end index of parsing and list of documents + return index; +}; + +/** + * @ignore + * @api private + */ +// BSON MAX VALUES +BSON.BSON_INT32_MAX = 0x7fffffff; +BSON.BSON_INT32_MIN = -0x80000000; + +BSON.BSON_INT64_MAX = Math.pow(2, 63) - 1; +BSON.BSON_INT64_MIN = -Math.pow(2, 63); + +// JS MAX PRECISE VALUES +BSON.JS_INT_MAX = 0x20000000000000; // Any integer up to 2^53 can be precisely represented by a double. +BSON.JS_INT_MIN = -0x20000000000000; // Any integer down to -2^53 can be precisely represented by a double. + +// Internal long versions +// var JS_INT_MAX_LONG = Long.fromNumber(0x20000000000000); // Any integer up to 2^53 can be precisely represented by a double. +// var JS_INT_MIN_LONG = Long.fromNumber(-0x20000000000000); // Any integer down to -2^53 can be precisely represented by a double. + +/** + * Number BSON Type + * + * @classconstant BSON_DATA_NUMBER + **/ +BSON.BSON_DATA_NUMBER = 1; +/** + * String BSON Type + * + * @classconstant BSON_DATA_STRING + **/ +BSON.BSON_DATA_STRING = 2; +/** + * Object BSON Type + * + * @classconstant BSON_DATA_OBJECT + **/ +BSON.BSON_DATA_OBJECT = 3; +/** + * Array BSON Type + * + * @classconstant BSON_DATA_ARRAY + **/ +BSON.BSON_DATA_ARRAY = 4; +/** + * Binary BSON Type + * + * @classconstant BSON_DATA_BINARY + **/ +BSON.BSON_DATA_BINARY = 5; +/** + * ObjectID BSON Type + * + * @classconstant BSON_DATA_OID + **/ +BSON.BSON_DATA_OID = 7; +/** + * Boolean BSON Type + * + * @classconstant BSON_DATA_BOOLEAN + **/ +BSON.BSON_DATA_BOOLEAN = 8; +/** + * Date BSON Type + * + * @classconstant BSON_DATA_DATE + **/ +BSON.BSON_DATA_DATE = 9; +/** + * null BSON Type + * + * @classconstant BSON_DATA_NULL + **/ +BSON.BSON_DATA_NULL = 10; +/** + * RegExp BSON Type + * + * @classconstant BSON_DATA_REGEXP + **/ +BSON.BSON_DATA_REGEXP = 11; +/** + * Code BSON Type + * + * @classconstant BSON_DATA_CODE + **/ +BSON.BSON_DATA_CODE = 13; +/** + * Symbol BSON Type + * + * @classconstant BSON_DATA_SYMBOL + **/ +BSON.BSON_DATA_SYMBOL = 14; +/** + * Code with Scope BSON Type + * + * @classconstant BSON_DATA_CODE_W_SCOPE + **/ +BSON.BSON_DATA_CODE_W_SCOPE = 15; +/** + * 32 bit Integer BSON Type + * + * @classconstant BSON_DATA_INT + **/ +BSON.BSON_DATA_INT = 16; +/** + * Timestamp BSON Type + * + * @classconstant BSON_DATA_TIMESTAMP + **/ +BSON.BSON_DATA_TIMESTAMP = 17; +/** + * Long BSON Type + * + * @classconstant BSON_DATA_LONG + **/ +BSON.BSON_DATA_LONG = 18; +/** + * MinKey BSON Type + * + * @classconstant BSON_DATA_MIN_KEY + **/ +BSON.BSON_DATA_MIN_KEY = 0xff; +/** + * MaxKey BSON Type + * + * @classconstant BSON_DATA_MAX_KEY + **/ +BSON.BSON_DATA_MAX_KEY = 0x7f; + +/** + * Binary Default Type + * + * @classconstant BSON_BINARY_SUBTYPE_DEFAULT + **/ +BSON.BSON_BINARY_SUBTYPE_DEFAULT = 0; +/** + * Binary Function Type + * + * @classconstant BSON_BINARY_SUBTYPE_FUNCTION + **/ +BSON.BSON_BINARY_SUBTYPE_FUNCTION = 1; +/** + * Binary Byte Array Type + * + * @classconstant BSON_BINARY_SUBTYPE_BYTE_ARRAY + **/ +BSON.BSON_BINARY_SUBTYPE_BYTE_ARRAY = 2; +/** + * Binary UUID Type + * + * @classconstant BSON_BINARY_SUBTYPE_UUID + **/ +BSON.BSON_BINARY_SUBTYPE_UUID = 3; +/** + * Binary MD5 Type + * + * @classconstant BSON_BINARY_SUBTYPE_MD5 + **/ +BSON.BSON_BINARY_SUBTYPE_MD5 = 4; +/** + * Binary User Defined Type + * + * @classconstant BSON_BINARY_SUBTYPE_USER_DEFINED + **/ +BSON.BSON_BINARY_SUBTYPE_USER_DEFINED = 128; + +// Return BSON +module.exports = BSON; +module.exports.Code = Code; +module.exports.Map = Map; +module.exports.Symbol = Symbol; +module.exports.BSON = BSON; +module.exports.DBRef = DBRef; +module.exports.Binary = Binary; +module.exports.ObjectID = ObjectID; +module.exports.Long = Long; +module.exports.Timestamp = Timestamp; +module.exports.Double = Double; +module.exports.Int32 = Int32; +module.exports.MinKey = MinKey; +module.exports.MaxKey = MaxKey; +module.exports.BSONRegExp = BSONRegExp; +module.exports.Decimal128 = Decimal128; diff --git a/node_modules/bson/lib/bson/code.js b/node_modules/bson/lib/bson/code.js new file mode 100644 index 0000000..c2984cd --- /dev/null +++ b/node_modules/bson/lib/bson/code.js @@ -0,0 +1,24 @@ +/** + * A class representation of the BSON Code type. + * + * @class + * @param {(string|function)} code a string or function. + * @param {Object} [scope] an optional scope for the function. + * @return {Code} + */ +var Code = function Code(code, scope) { + if (!(this instanceof Code)) return new Code(code, scope); + this._bsontype = 'Code'; + this.code = code; + this.scope = scope; +}; + +/** + * @ignore + */ +Code.prototype.toJSON = function() { + return { scope: this.scope, code: this.code }; +}; + +module.exports = Code; +module.exports.Code = Code; diff --git a/node_modules/bson/lib/bson/db_ref.js b/node_modules/bson/lib/bson/db_ref.js new file mode 100644 index 0000000..f95795b --- /dev/null +++ b/node_modules/bson/lib/bson/db_ref.js @@ -0,0 +1,32 @@ +/** + * A class representation of the BSON DBRef type. + * + * @class + * @param {string} namespace the collection name. + * @param {ObjectID} oid the reference ObjectID. + * @param {string} [db] optional db name, if omitted the reference is local to the current db. + * @return {DBRef} + */ +function DBRef(namespace, oid, db) { + if (!(this instanceof DBRef)) return new DBRef(namespace, oid, db); + + this._bsontype = 'DBRef'; + this.namespace = namespace; + this.oid = oid; + this.db = db; +} + +/** + * @ignore + * @api private + */ +DBRef.prototype.toJSON = function() { + return { + $ref: this.namespace, + $id: this.oid, + $db: this.db == null ? '' : this.db + }; +}; + +module.exports = DBRef; +module.exports.DBRef = DBRef; diff --git a/node_modules/bson/lib/bson/decimal128.js b/node_modules/bson/lib/bson/decimal128.js new file mode 100644 index 0000000..924513f --- /dev/null +++ b/node_modules/bson/lib/bson/decimal128.js @@ -0,0 +1,820 @@ +'use strict'; + +var Long = require('./long'); + +var PARSE_STRING_REGEXP = /^(\+|-)?(\d+|(\d*\.\d*))?(E|e)?([-+])?(\d+)?$/; +var PARSE_INF_REGEXP = /^(\+|-)?(Infinity|inf)$/i; +var PARSE_NAN_REGEXP = /^(\+|-)?NaN$/i; + +var EXPONENT_MAX = 6111; +var EXPONENT_MIN = -6176; +var EXPONENT_BIAS = 6176; +var MAX_DIGITS = 34; + +// Nan value bits as 32 bit values (due to lack of longs) +var NAN_BUFFER = [ + 0x7c, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00 +].reverse(); +// Infinity value bits 32 bit values (due to lack of longs) +var INF_NEGATIVE_BUFFER = [ + 0xf8, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00 +].reverse(); +var INF_POSITIVE_BUFFER = [ + 0x78, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00, + 0x00 +].reverse(); + +var EXPONENT_REGEX = /^([-+])?(\d+)?$/; + +var utils = require('./parser/utils'); + +// Detect if the value is a digit +var isDigit = function(value) { + return !isNaN(parseInt(value, 10)); +}; + +// Divide two uint128 values +var divideu128 = function(value) { + var DIVISOR = Long.fromNumber(1000 * 1000 * 1000); + var _rem = Long.fromNumber(0); + var i = 0; + + if (!value.parts[0] && !value.parts[1] && !value.parts[2] && !value.parts[3]) { + return { quotient: value, rem: _rem }; + } + + for (i = 0; i <= 3; i++) { + // Adjust remainder to match value of next dividend + _rem = _rem.shiftLeft(32); + // Add the divided to _rem + _rem = _rem.add(new Long(value.parts[i], 0)); + value.parts[i] = _rem.div(DIVISOR).low_; + _rem = _rem.modulo(DIVISOR); + } + + return { quotient: value, rem: _rem }; +}; + +// Multiply two Long values and return the 128 bit value +var multiply64x2 = function(left, right) { + if (!left && !right) { + return { high: Long.fromNumber(0), low: Long.fromNumber(0) }; + } + + var leftHigh = left.shiftRightUnsigned(32); + var leftLow = new Long(left.getLowBits(), 0); + var rightHigh = right.shiftRightUnsigned(32); + var rightLow = new Long(right.getLowBits(), 0); + + var productHigh = leftHigh.multiply(rightHigh); + var productMid = leftHigh.multiply(rightLow); + var productMid2 = leftLow.multiply(rightHigh); + var productLow = leftLow.multiply(rightLow); + + productHigh = productHigh.add(productMid.shiftRightUnsigned(32)); + productMid = new Long(productMid.getLowBits(), 0) + .add(productMid2) + .add(productLow.shiftRightUnsigned(32)); + + productHigh = productHigh.add(productMid.shiftRightUnsigned(32)); + productLow = productMid.shiftLeft(32).add(new Long(productLow.getLowBits(), 0)); + + // Return the 128 bit result + return { high: productHigh, low: productLow }; +}; + +var lessThan = function(left, right) { + // Make values unsigned + var uhleft = left.high_ >>> 0; + var uhright = right.high_ >>> 0; + + // Compare high bits first + if (uhleft < uhright) { + return true; + } else if (uhleft === uhright) { + var ulleft = left.low_ >>> 0; + var ulright = right.low_ >>> 0; + if (ulleft < ulright) return true; + } + + return false; +}; + +// var longtoHex = function(value) { +// var buffer = utils.allocBuffer(8); +// var index = 0; +// // Encode the low 64 bits of the decimal +// // Encode low bits +// buffer[index++] = value.low_ & 0xff; +// buffer[index++] = (value.low_ >> 8) & 0xff; +// buffer[index++] = (value.low_ >> 16) & 0xff; +// buffer[index++] = (value.low_ >> 24) & 0xff; +// // Encode high bits +// buffer[index++] = value.high_ & 0xff; +// buffer[index++] = (value.high_ >> 8) & 0xff; +// buffer[index++] = (value.high_ >> 16) & 0xff; +// buffer[index++] = (value.high_ >> 24) & 0xff; +// return buffer.reverse().toString('hex'); +// }; + +// var int32toHex = function(value) { +// var buffer = utils.allocBuffer(4); +// var index = 0; +// // Encode the low 64 bits of the decimal +// // Encode low bits +// buffer[index++] = value & 0xff; +// buffer[index++] = (value >> 8) & 0xff; +// buffer[index++] = (value >> 16) & 0xff; +// buffer[index++] = (value >> 24) & 0xff; +// return buffer.reverse().toString('hex'); +// }; + +/** + * A class representation of the BSON Decimal128 type. + * + * @class + * @param {Buffer} bytes a buffer containing the raw Decimal128 bytes. + * @return {Double} + */ +var Decimal128 = function(bytes) { + this._bsontype = 'Decimal128'; + this.bytes = bytes; +}; + +/** + * Create a Decimal128 instance from a string representation + * + * @method + * @param {string} string a numeric string representation. + * @return {Decimal128} returns a Decimal128 instance. + */ +Decimal128.fromString = function(string) { + // Parse state tracking + var isNegative = false; + var sawRadix = false; + var foundNonZero = false; + + // Total number of significant digits (no leading or trailing zero) + var significantDigits = 0; + // Total number of significand digits read + var nDigitsRead = 0; + // Total number of digits (no leading zeros) + var nDigits = 0; + // The number of the digits after radix + var radixPosition = 0; + // The index of the first non-zero in *str* + var firstNonZero = 0; + + // Digits Array + var digits = [0]; + // The number of digits in digits + var nDigitsStored = 0; + // Insertion pointer for digits + var digitsInsert = 0; + // The index of the first non-zero digit + var firstDigit = 0; + // The index of the last digit + var lastDigit = 0; + + // Exponent + var exponent = 0; + // loop index over array + var i = 0; + // The high 17 digits of the significand + var significandHigh = [0, 0]; + // The low 17 digits of the significand + var significandLow = [0, 0]; + // The biased exponent + var biasedExponent = 0; + + // Read index + var index = 0; + + // Trim the string + string = string.trim(); + + // Naively prevent against REDOS attacks. + // TODO: implementing a custom parsing for this, or refactoring the regex would yield + // further gains. + if (string.length >= 7000) { + throw new Error('' + string + ' not a valid Decimal128 string'); + } + + // Results + var stringMatch = string.match(PARSE_STRING_REGEXP); + var infMatch = string.match(PARSE_INF_REGEXP); + var nanMatch = string.match(PARSE_NAN_REGEXP); + + // Validate the string + if ((!stringMatch && !infMatch && !nanMatch) || string.length === 0) { + throw new Error('' + string + ' not a valid Decimal128 string'); + } + + // Check if we have an illegal exponent format + if (stringMatch && stringMatch[4] && stringMatch[2] === undefined) { + throw new Error('' + string + ' not a valid Decimal128 string'); + } + + // Get the negative or positive sign + if (string[index] === '+' || string[index] === '-') { + isNegative = string[index++] === '-'; + } + + // Check if user passed Infinity or NaN + if (!isDigit(string[index]) && string[index] !== '.') { + if (string[index] === 'i' || string[index] === 'I') { + return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER)); + } else if (string[index] === 'N') { + return new Decimal128(utils.toBuffer(NAN_BUFFER)); + } + } + + // Read all the digits + while (isDigit(string[index]) || string[index] === '.') { + if (string[index] === '.') { + if (sawRadix) { + return new Decimal128(utils.toBuffer(NAN_BUFFER)); + } + + sawRadix = true; + index = index + 1; + continue; + } + + if (nDigitsStored < 34) { + if (string[index] !== '0' || foundNonZero) { + if (!foundNonZero) { + firstNonZero = nDigitsRead; + } + + foundNonZero = true; + + // Only store 34 digits + digits[digitsInsert++] = parseInt(string[index], 10); + nDigitsStored = nDigitsStored + 1; + } + } + + if (foundNonZero) { + nDigits = nDigits + 1; + } + + if (sawRadix) { + radixPosition = radixPosition + 1; + } + + nDigitsRead = nDigitsRead + 1; + index = index + 1; + } + + if (sawRadix && !nDigitsRead) { + throw new Error('' + string + ' not a valid Decimal128 string'); + } + + // Read exponent if exists + if (string[index] === 'e' || string[index] === 'E') { + // Read exponent digits + var match = string.substr(++index).match(EXPONENT_REGEX); + + // No digits read + if (!match || !match[2]) { + return new Decimal128(utils.toBuffer(NAN_BUFFER)); + } + + // Get exponent + exponent = parseInt(match[0], 10); + + // Adjust the index + index = index + match[0].length; + } + + // Return not a number + if (string[index]) { + return new Decimal128(utils.toBuffer(NAN_BUFFER)); + } + + // Done reading input + // Find first non-zero digit in digits + firstDigit = 0; + + if (!nDigitsStored) { + firstDigit = 0; + lastDigit = 0; + digits[0] = 0; + nDigits = 1; + nDigitsStored = 1; + significantDigits = 0; + } else { + lastDigit = nDigitsStored - 1; + significantDigits = nDigits; + + if (exponent !== 0 && significantDigits !== 1) { + while (string[firstNonZero + significantDigits - 1] === '0') { + significantDigits = significantDigits - 1; + } + } + } + + // Normalization of exponent + // Correct exponent based on radix position, and shift significand as needed + // to represent user input + + // Overflow prevention + if (exponent <= radixPosition && radixPosition - exponent > 1 << 14) { + exponent = EXPONENT_MIN; + } else { + exponent = exponent - radixPosition; + } + + // Attempt to normalize the exponent + while (exponent > EXPONENT_MAX) { + // Shift exponent to significand and decrease + lastDigit = lastDigit + 1; + + if (lastDigit - firstDigit > MAX_DIGITS) { + // Check if we have a zero then just hard clamp, otherwise fail + var digitsString = digits.join(''); + if (digitsString.match(/^0+$/)) { + exponent = EXPONENT_MAX; + break; + } else { + return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER)); + } + } + + exponent = exponent - 1; + } + + while (exponent < EXPONENT_MIN || nDigitsStored < nDigits) { + // Shift last digit + if (lastDigit === 0) { + exponent = EXPONENT_MIN; + significantDigits = 0; + break; + } + + if (nDigitsStored < nDigits) { + // adjust to match digits not stored + nDigits = nDigits - 1; + } else { + // adjust to round + lastDigit = lastDigit - 1; + } + + if (exponent < EXPONENT_MAX) { + exponent = exponent + 1; + } else { + // Check if we have a zero then just hard clamp, otherwise fail + digitsString = digits.join(''); + if (digitsString.match(/^0+$/)) { + exponent = EXPONENT_MAX; + break; + } else { + return new Decimal128(utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER)); + } + } + } + + // Round + // We've normalized the exponent, but might still need to round. + if (lastDigit - firstDigit + 1 < significantDigits && string[significantDigits] !== '0') { + var endOfString = nDigitsRead; + + // If we have seen a radix point, 'string' is 1 longer than we have + // documented with ndigits_read, so inc the position of the first nonzero + // digit and the position that digits are read to. + if (sawRadix && exponent === EXPONENT_MIN) { + firstNonZero = firstNonZero + 1; + endOfString = endOfString + 1; + } + + var roundDigit = parseInt(string[firstNonZero + lastDigit + 1], 10); + var roundBit = 0; + + if (roundDigit >= 5) { + roundBit = 1; + + if (roundDigit === 5) { + roundBit = digits[lastDigit] % 2 === 1; + + for (i = firstNonZero + lastDigit + 2; i < endOfString; i++) { + if (parseInt(string[i], 10)) { + roundBit = 1; + break; + } + } + } + } + + if (roundBit) { + var dIdx = lastDigit; + + for (; dIdx >= 0; dIdx--) { + if (++digits[dIdx] > 9) { + digits[dIdx] = 0; + + // overflowed most significant digit + if (dIdx === 0) { + if (exponent < EXPONENT_MAX) { + exponent = exponent + 1; + digits[dIdx] = 1; + } else { + return new Decimal128( + utils.toBuffer(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER) + ); + } + } + } else { + break; + } + } + } + } + + // Encode significand + // The high 17 digits of the significand + significandHigh = Long.fromNumber(0); + // The low 17 digits of the significand + significandLow = Long.fromNumber(0); + + // read a zero + if (significantDigits === 0) { + significandHigh = Long.fromNumber(0); + significandLow = Long.fromNumber(0); + } else if (lastDigit - firstDigit < 17) { + dIdx = firstDigit; + significandLow = Long.fromNumber(digits[dIdx++]); + significandHigh = new Long(0, 0); + + for (; dIdx <= lastDigit; dIdx++) { + significandLow = significandLow.multiply(Long.fromNumber(10)); + significandLow = significandLow.add(Long.fromNumber(digits[dIdx])); + } + } else { + dIdx = firstDigit; + significandHigh = Long.fromNumber(digits[dIdx++]); + + for (; dIdx <= lastDigit - 17; dIdx++) { + significandHigh = significandHigh.multiply(Long.fromNumber(10)); + significandHigh = significandHigh.add(Long.fromNumber(digits[dIdx])); + } + + significandLow = Long.fromNumber(digits[dIdx++]); + + for (; dIdx <= lastDigit; dIdx++) { + significandLow = significandLow.multiply(Long.fromNumber(10)); + significandLow = significandLow.add(Long.fromNumber(digits[dIdx])); + } + } + + var significand = multiply64x2(significandHigh, Long.fromString('100000000000000000')); + + significand.low = significand.low.add(significandLow); + + if (lessThan(significand.low, significandLow)) { + significand.high = significand.high.add(Long.fromNumber(1)); + } + + // Biased exponent + biasedExponent = exponent + EXPONENT_BIAS; + var dec = { low: Long.fromNumber(0), high: Long.fromNumber(0) }; + + // Encode combination, exponent, and significand. + if ( + significand.high + .shiftRightUnsigned(49) + .and(Long.fromNumber(1)) + .equals(Long.fromNumber) + ) { + // Encode '11' into bits 1 to 3 + dec.high = dec.high.or(Long.fromNumber(0x3).shiftLeft(61)); + dec.high = dec.high.or( + Long.fromNumber(biasedExponent).and(Long.fromNumber(0x3fff).shiftLeft(47)) + ); + dec.high = dec.high.or(significand.high.and(Long.fromNumber(0x7fffffffffff))); + } else { + dec.high = dec.high.or(Long.fromNumber(biasedExponent & 0x3fff).shiftLeft(49)); + dec.high = dec.high.or(significand.high.and(Long.fromNumber(0x1ffffffffffff))); + } + + dec.low = significand.low; + + // Encode sign + if (isNegative) { + dec.high = dec.high.or(Long.fromString('9223372036854775808')); + } + + // Encode into a buffer + var buffer = utils.allocBuffer(16); + index = 0; + + // Encode the low 64 bits of the decimal + // Encode low bits + buffer[index++] = dec.low.low_ & 0xff; + buffer[index++] = (dec.low.low_ >> 8) & 0xff; + buffer[index++] = (dec.low.low_ >> 16) & 0xff; + buffer[index++] = (dec.low.low_ >> 24) & 0xff; + // Encode high bits + buffer[index++] = dec.low.high_ & 0xff; + buffer[index++] = (dec.low.high_ >> 8) & 0xff; + buffer[index++] = (dec.low.high_ >> 16) & 0xff; + buffer[index++] = (dec.low.high_ >> 24) & 0xff; + + // Encode the high 64 bits of the decimal + // Encode low bits + buffer[index++] = dec.high.low_ & 0xff; + buffer[index++] = (dec.high.low_ >> 8) & 0xff; + buffer[index++] = (dec.high.low_ >> 16) & 0xff; + buffer[index++] = (dec.high.low_ >> 24) & 0xff; + // Encode high bits + buffer[index++] = dec.high.high_ & 0xff; + buffer[index++] = (dec.high.high_ >> 8) & 0xff; + buffer[index++] = (dec.high.high_ >> 16) & 0xff; + buffer[index++] = (dec.high.high_ >> 24) & 0xff; + + // Return the new Decimal128 + return new Decimal128(buffer); +}; + +// Extract least significant 5 bits +var COMBINATION_MASK = 0x1f; +// Extract least significant 14 bits +var EXPONENT_MASK = 0x3fff; +// Value of combination field for Inf +var COMBINATION_INFINITY = 30; +// Value of combination field for NaN +var COMBINATION_NAN = 31; +// Value of combination field for NaN +// var COMBINATION_SNAN = 32; +// decimal128 exponent bias +EXPONENT_BIAS = 6176; + +/** + * Create a string representation of the raw Decimal128 value + * + * @method + * @return {string} returns a Decimal128 string representation. + */ +Decimal128.prototype.toString = function() { + // Note: bits in this routine are referred to starting at 0, + // from the sign bit, towards the coefficient. + + // bits 0 - 31 + var high; + // bits 32 - 63 + var midh; + // bits 64 - 95 + var midl; + // bits 96 - 127 + var low; + // bits 1 - 5 + var combination; + // decoded biased exponent (14 bits) + var biased_exponent; + // the number of significand digits + var significand_digits = 0; + // the base-10 digits in the significand + var significand = new Array(36); + for (var i = 0; i < significand.length; i++) significand[i] = 0; + // read pointer into significand + var index = 0; + + // unbiased exponent + var exponent; + // the exponent if scientific notation is used + var scientific_exponent; + + // true if the number is zero + var is_zero = false; + + // the most signifcant significand bits (50-46) + var significand_msb; + // temporary storage for significand decoding + var significand128 = { parts: new Array(4) }; + // indexing variables + i; + var j, k; + + // Output string + var string = []; + + // Unpack index + index = 0; + + // Buffer reference + var buffer = this.bytes; + + // Unpack the low 64bits into a long + low = + buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24); + midl = + buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24); + + // Unpack the high 64bits into a long + midh = + buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24); + high = + buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24); + + // Unpack index + index = 0; + + // Create the state of the decimal + var dec = { + low: new Long(low, midl), + high: new Long(midh, high) + }; + + if (dec.high.lessThan(Long.ZERO)) { + string.push('-'); + } + + // Decode combination field and exponent + combination = (high >> 26) & COMBINATION_MASK; + + if (combination >> 3 === 3) { + // Check for 'special' values + if (combination === COMBINATION_INFINITY) { + return string.join('') + 'Infinity'; + } else if (combination === COMBINATION_NAN) { + return 'NaN'; + } else { + biased_exponent = (high >> 15) & EXPONENT_MASK; + significand_msb = 0x08 + ((high >> 14) & 0x01); + } + } else { + significand_msb = (high >> 14) & 0x07; + biased_exponent = (high >> 17) & EXPONENT_MASK; + } + + exponent = biased_exponent - EXPONENT_BIAS; + + // Create string of significand digits + + // Convert the 114-bit binary number represented by + // (significand_high, significand_low) to at most 34 decimal + // digits through modulo and division. + significand128.parts[0] = (high & 0x3fff) + ((significand_msb & 0xf) << 14); + significand128.parts[1] = midh; + significand128.parts[2] = midl; + significand128.parts[3] = low; + + if ( + significand128.parts[0] === 0 && + significand128.parts[1] === 0 && + significand128.parts[2] === 0 && + significand128.parts[3] === 0 + ) { + is_zero = true; + } else { + for (k = 3; k >= 0; k--) { + var least_digits = 0; + // Peform the divide + var result = divideu128(significand128); + significand128 = result.quotient; + least_digits = result.rem.low_; + + // We now have the 9 least significant digits (in base 2). + // Convert and output to string. + if (!least_digits) continue; + + for (j = 8; j >= 0; j--) { + // significand[k * 9 + j] = Math.round(least_digits % 10); + significand[k * 9 + j] = least_digits % 10; + // least_digits = Math.round(least_digits / 10); + least_digits = Math.floor(least_digits / 10); + } + } + } + + // Output format options: + // Scientific - [-]d.dddE(+/-)dd or [-]dE(+/-)dd + // Regular - ddd.ddd + + if (is_zero) { + significand_digits = 1; + significand[index] = 0; + } else { + significand_digits = 36; + i = 0; + + while (!significand[index]) { + i++; + significand_digits = significand_digits - 1; + index = index + 1; + } + } + + scientific_exponent = significand_digits - 1 + exponent; + + // The scientific exponent checks are dictated by the string conversion + // specification and are somewhat arbitrary cutoffs. + // + // We must check exponent > 0, because if this is the case, the number + // has trailing zeros. However, we *cannot* output these trailing zeros, + // because doing so would change the precision of the value, and would + // change stored data if the string converted number is round tripped. + + if (scientific_exponent >= 34 || scientific_exponent <= -7 || exponent > 0) { + // Scientific format + string.push(significand[index++]); + significand_digits = significand_digits - 1; + + if (significand_digits) { + string.push('.'); + } + + for (i = 0; i < significand_digits; i++) { + string.push(significand[index++]); + } + + // Exponent + string.push('E'); + if (scientific_exponent > 0) { + string.push('+' + scientific_exponent); + } else { + string.push(scientific_exponent); + } + } else { + // Regular format with no decimal place + if (exponent >= 0) { + for (i = 0; i < significand_digits; i++) { + string.push(significand[index++]); + } + } else { + var radix_position = significand_digits + exponent; + + // non-zero digits before radix + if (radix_position > 0) { + for (i = 0; i < radix_position; i++) { + string.push(significand[index++]); + } + } else { + string.push('0'); + } + + string.push('.'); + // add leading zeros after radix + while (radix_position++ < 0) { + string.push('0'); + } + + for (i = 0; i < significand_digits - Math.max(radix_position - 1, 0); i++) { + string.push(significand[index++]); + } + } + } + + return string.join(''); +}; + +Decimal128.prototype.toJSON = function() { + return { $numberDecimal: this.toString() }; +}; + +module.exports = Decimal128; +module.exports.Decimal128 = Decimal128; diff --git a/node_modules/bson/lib/bson/double.js b/node_modules/bson/lib/bson/double.js new file mode 100644 index 0000000..523c21f --- /dev/null +++ b/node_modules/bson/lib/bson/double.js @@ -0,0 +1,33 @@ +/** + * A class representation of the BSON Double type. + * + * @class + * @param {number} value the number we want to represent as a double. + * @return {Double} + */ +function Double(value) { + if (!(this instanceof Double)) return new Double(value); + + this._bsontype = 'Double'; + this.value = value; +} + +/** + * Access the number value. + * + * @method + * @return {number} returns the wrapped double number. + */ +Double.prototype.valueOf = function() { + return this.value; +}; + +/** + * @ignore + */ +Double.prototype.toJSON = function() { + return this.value; +}; + +module.exports = Double; +module.exports.Double = Double; diff --git a/node_modules/bson/lib/bson/float_parser.js b/node_modules/bson/lib/bson/float_parser.js new file mode 100644 index 0000000..0054a2f --- /dev/null +++ b/node_modules/bson/lib/bson/float_parser.js @@ -0,0 +1,124 @@ +// Copyright (c) 2008, Fair Oaks Labs, Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// * Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// +// * Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// +// * Neither the name of Fair Oaks Labs, Inc. nor the names of its contributors +// may be used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE +// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +// POSSIBILITY OF SUCH DAMAGE. +// +// +// Modifications to writeIEEE754 to support negative zeroes made by Brian White + +var readIEEE754 = function(buffer, offset, endian, mLen, nBytes) { + var e, + m, + bBE = endian === 'big', + eLen = nBytes * 8 - mLen - 1, + eMax = (1 << eLen) - 1, + eBias = eMax >> 1, + nBits = -7, + i = bBE ? 0 : nBytes - 1, + d = bBE ? 1 : -1, + s = buffer[offset + i]; + + i += d; + + e = s & ((1 << -nBits) - 1); + s >>= -nBits; + nBits += eLen; + for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8); + + m = e & ((1 << -nBits) - 1); + e >>= -nBits; + nBits += mLen; + for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8); + + if (e === 0) { + e = 1 - eBias; + } else if (e === eMax) { + return m ? NaN : (s ? -1 : 1) * Infinity; + } else { + m = m + Math.pow(2, mLen); + e = e - eBias; + } + return (s ? -1 : 1) * m * Math.pow(2, e - mLen); +}; + +var writeIEEE754 = function(buffer, value, offset, endian, mLen, nBytes) { + var e, + m, + c, + bBE = endian === 'big', + eLen = nBytes * 8 - mLen - 1, + eMax = (1 << eLen) - 1, + eBias = eMax >> 1, + rt = mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0, + i = bBE ? nBytes - 1 : 0, + d = bBE ? -1 : 1, + s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0; + + value = Math.abs(value); + + if (isNaN(value) || value === Infinity) { + m = isNaN(value) ? 1 : 0; + e = eMax; + } else { + e = Math.floor(Math.log(value) / Math.LN2); + if (value * (c = Math.pow(2, -e)) < 1) { + e--; + c *= 2; + } + if (e + eBias >= 1) { + value += rt / c; + } else { + value += rt * Math.pow(2, 1 - eBias); + } + if (value * c >= 2) { + e++; + c /= 2; + } + + if (e + eBias >= eMax) { + m = 0; + e = eMax; + } else if (e + eBias >= 1) { + m = (value * c - 1) * Math.pow(2, mLen); + e = e + eBias; + } else { + m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen); + e = 0; + } + } + + for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8); + + e = (e << mLen) | m; + eLen += mLen; + for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8); + + buffer[offset + i - d] |= s * 128; +}; + +exports.readIEEE754 = readIEEE754; +exports.writeIEEE754 = writeIEEE754; diff --git a/node_modules/bson/lib/bson/int_32.js b/node_modules/bson/lib/bson/int_32.js new file mode 100644 index 0000000..85dbdec --- /dev/null +++ b/node_modules/bson/lib/bson/int_32.js @@ -0,0 +1,33 @@ +/** + * A class representation of a BSON Int32 type. + * + * @class + * @param {number} value the number we want to represent as an int32. + * @return {Int32} + */ +var Int32 = function(value) { + if (!(this instanceof Int32)) return new Int32(value); + + this._bsontype = 'Int32'; + this.value = value; +}; + +/** + * Access the number value. + * + * @method + * @return {number} returns the wrapped int32 number. + */ +Int32.prototype.valueOf = function() { + return this.value; +}; + +/** + * @ignore + */ +Int32.prototype.toJSON = function() { + return this.value; +}; + +module.exports = Int32; +module.exports.Int32 = Int32; diff --git a/node_modules/bson/lib/bson/long.js b/node_modules/bson/lib/bson/long.js new file mode 100644 index 0000000..78215aa --- /dev/null +++ b/node_modules/bson/lib/bson/long.js @@ -0,0 +1,851 @@ +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +// +// Copyright 2009 Google Inc. All Rights Reserved + +/** + * Defines a Long class for representing a 64-bit two's-complement + * integer value, which faithfully simulates the behavior of a Java "Long". This + * implementation is derived from LongLib in GWT. + * + * Constructs a 64-bit two's-complement integer, given its low and high 32-bit + * values as *signed* integers. See the from* functions below for more + * convenient ways of constructing Longs. + * + * The internal representation of a Long is the two given signed, 32-bit values. + * We use 32-bit pieces because these are the size of integers on which + * Javascript performs bit-operations. For operations like addition and + * multiplication, we split each number into 16-bit pieces, which can easily be + * multiplied within Javascript's floating-point representation without overflow + * or change in sign. + * + * In the algorithms below, we frequently reduce the negative case to the + * positive case by negating the input(s) and then post-processing the result. + * Note that we must ALWAYS check specially whether those values are MIN_VALUE + * (-2^63) because -MIN_VALUE == MIN_VALUE (since 2^63 cannot be represented as + * a positive number, it overflows back into a negative). Not handling this + * case would often result in infinite recursion. + * + * @class + * @param {number} low the low (signed) 32 bits of the Long. + * @param {number} high the high (signed) 32 bits of the Long. + * @return {Long} + */ +function Long(low, high) { + if (!(this instanceof Long)) return new Long(low, high); + + this._bsontype = 'Long'; + /** + * @type {number} + * @ignore + */ + this.low_ = low | 0; // force into 32 signed bits. + + /** + * @type {number} + * @ignore + */ + this.high_ = high | 0; // force into 32 signed bits. +} + +/** + * Return the int value. + * + * @method + * @return {number} the value, assuming it is a 32-bit integer. + */ +Long.prototype.toInt = function() { + return this.low_; +}; + +/** + * Return the Number value. + * + * @method + * @return {number} the closest floating-point representation to this value. + */ +Long.prototype.toNumber = function() { + return this.high_ * Long.TWO_PWR_32_DBL_ + this.getLowBitsUnsigned(); +}; + +/** + * Return the JSON value. + * + * @method + * @return {string} the JSON representation. + */ +Long.prototype.toJSON = function() { + return this.toString(); +}; + +/** + * Return the String value. + * + * @method + * @param {number} [opt_radix] the radix in which the text should be written. + * @return {string} the textual representation of this value. + */ +Long.prototype.toString = function(opt_radix) { + var radix = opt_radix || 10; + if (radix < 2 || 36 < radix) { + throw Error('radix out of range: ' + radix); + } + + if (this.isZero()) { + return '0'; + } + + if (this.isNegative()) { + if (this.equals(Long.MIN_VALUE)) { + // We need to change the Long value before it can be negated, so we remove + // the bottom-most digit in this base and then recurse to do the rest. + var radixLong = Long.fromNumber(radix); + var div = this.div(radixLong); + var rem = div.multiply(radixLong).subtract(this); + return div.toString(radix) + rem.toInt().toString(radix); + } else { + return '-' + this.negate().toString(radix); + } + } + + // Do several (6) digits each time through the loop, so as to + // minimize the calls to the very expensive emulated div. + var radixToPower = Long.fromNumber(Math.pow(radix, 6)); + + rem = this; + var result = ''; + + while (!rem.isZero()) { + var remDiv = rem.div(radixToPower); + var intval = rem.subtract(remDiv.multiply(radixToPower)).toInt(); + var digits = intval.toString(radix); + + rem = remDiv; + if (rem.isZero()) { + return digits + result; + } else { + while (digits.length < 6) { + digits = '0' + digits; + } + result = '' + digits + result; + } + } +}; + +/** + * Return the high 32-bits value. + * + * @method + * @return {number} the high 32-bits as a signed value. + */ +Long.prototype.getHighBits = function() { + return this.high_; +}; + +/** + * Return the low 32-bits value. + * + * @method + * @return {number} the low 32-bits as a signed value. + */ +Long.prototype.getLowBits = function() { + return this.low_; +}; + +/** + * Return the low unsigned 32-bits value. + * + * @method + * @return {number} the low 32-bits as an unsigned value. + */ +Long.prototype.getLowBitsUnsigned = function() { + return this.low_ >= 0 ? this.low_ : Long.TWO_PWR_32_DBL_ + this.low_; +}; + +/** + * Returns the number of bits needed to represent the absolute value of this Long. + * + * @method + * @return {number} Returns the number of bits needed to represent the absolute value of this Long. + */ +Long.prototype.getNumBitsAbs = function() { + if (this.isNegative()) { + if (this.equals(Long.MIN_VALUE)) { + return 64; + } else { + return this.negate().getNumBitsAbs(); + } + } else { + var val = this.high_ !== 0 ? this.high_ : this.low_; + for (var bit = 31; bit > 0; bit--) { + if ((val & (1 << bit)) !== 0) { + break; + } + } + return this.high_ !== 0 ? bit + 33 : bit + 1; + } +}; + +/** + * Return whether this value is zero. + * + * @method + * @return {boolean} whether this value is zero. + */ +Long.prototype.isZero = function() { + return this.high_ === 0 && this.low_ === 0; +}; + +/** + * Return whether this value is negative. + * + * @method + * @return {boolean} whether this value is negative. + */ +Long.prototype.isNegative = function() { + return this.high_ < 0; +}; + +/** + * Return whether this value is odd. + * + * @method + * @return {boolean} whether this value is odd. + */ +Long.prototype.isOdd = function() { + return (this.low_ & 1) === 1; +}; + +/** + * Return whether this Long equals the other + * + * @method + * @param {Long} other Long to compare against. + * @return {boolean} whether this Long equals the other + */ +Long.prototype.equals = function(other) { + return this.high_ === other.high_ && this.low_ === other.low_; +}; + +/** + * Return whether this Long does not equal the other. + * + * @method + * @param {Long} other Long to compare against. + * @return {boolean} whether this Long does not equal the other. + */ +Long.prototype.notEquals = function(other) { + return this.high_ !== other.high_ || this.low_ !== other.low_; +}; + +/** + * Return whether this Long is less than the other. + * + * @method + * @param {Long} other Long to compare against. + * @return {boolean} whether this Long is less than the other. + */ +Long.prototype.lessThan = function(other) { + return this.compare(other) < 0; +}; + +/** + * Return whether this Long is less than or equal to the other. + * + * @method + * @param {Long} other Long to compare against. + * @return {boolean} whether this Long is less than or equal to the other. + */ +Long.prototype.lessThanOrEqual = function(other) { + return this.compare(other) <= 0; +}; + +/** + * Return whether this Long is greater than the other. + * + * @method + * @param {Long} other Long to compare against. + * @return {boolean} whether this Long is greater than the other. + */ +Long.prototype.greaterThan = function(other) { + return this.compare(other) > 0; +}; + +/** + * Return whether this Long is greater than or equal to the other. + * + * @method + * @param {Long} other Long to compare against. + * @return {boolean} whether this Long is greater than or equal to the other. + */ +Long.prototype.greaterThanOrEqual = function(other) { + return this.compare(other) >= 0; +}; + +/** + * Compares this Long with the given one. + * + * @method + * @param {Long} other Long to compare against. + * @return {boolean} 0 if they are the same, 1 if the this is greater, and -1 if the given one is greater. + */ +Long.prototype.compare = function(other) { + if (this.equals(other)) { + return 0; + } + + var thisNeg = this.isNegative(); + var otherNeg = other.isNegative(); + if (thisNeg && !otherNeg) { + return -1; + } + if (!thisNeg && otherNeg) { + return 1; + } + + // at this point, the signs are the same, so subtraction will not overflow + if (this.subtract(other).isNegative()) { + return -1; + } else { + return 1; + } +}; + +/** + * The negation of this value. + * + * @method + * @return {Long} the negation of this value. + */ +Long.prototype.negate = function() { + if (this.equals(Long.MIN_VALUE)) { + return Long.MIN_VALUE; + } else { + return this.not().add(Long.ONE); + } +}; + +/** + * Returns the sum of this and the given Long. + * + * @method + * @param {Long} other Long to add to this one. + * @return {Long} the sum of this and the given Long. + */ +Long.prototype.add = function(other) { + // Divide each number into 4 chunks of 16 bits, and then sum the chunks. + + var a48 = this.high_ >>> 16; + var a32 = this.high_ & 0xffff; + var a16 = this.low_ >>> 16; + var a00 = this.low_ & 0xffff; + + var b48 = other.high_ >>> 16; + var b32 = other.high_ & 0xffff; + var b16 = other.low_ >>> 16; + var b00 = other.low_ & 0xffff; + + var c48 = 0, + c32 = 0, + c16 = 0, + c00 = 0; + c00 += a00 + b00; + c16 += c00 >>> 16; + c00 &= 0xffff; + c16 += a16 + b16; + c32 += c16 >>> 16; + c16 &= 0xffff; + c32 += a32 + b32; + c48 += c32 >>> 16; + c32 &= 0xffff; + c48 += a48 + b48; + c48 &= 0xffff; + return Long.fromBits((c16 << 16) | c00, (c48 << 16) | c32); +}; + +/** + * Returns the difference of this and the given Long. + * + * @method + * @param {Long} other Long to subtract from this. + * @return {Long} the difference of this and the given Long. + */ +Long.prototype.subtract = function(other) { + return this.add(other.negate()); +}; + +/** + * Returns the product of this and the given Long. + * + * @method + * @param {Long} other Long to multiply with this. + * @return {Long} the product of this and the other. + */ +Long.prototype.multiply = function(other) { + if (this.isZero()) { + return Long.ZERO; + } else if (other.isZero()) { + return Long.ZERO; + } + + if (this.equals(Long.MIN_VALUE)) { + return other.isOdd() ? Long.MIN_VALUE : Long.ZERO; + } else if (other.equals(Long.MIN_VALUE)) { + return this.isOdd() ? Long.MIN_VALUE : Long.ZERO; + } + + if (this.isNegative()) { + if (other.isNegative()) { + return this.negate().multiply(other.negate()); + } else { + return this.negate() + .multiply(other) + .negate(); + } + } else if (other.isNegative()) { + return this.multiply(other.negate()).negate(); + } + + // If both Longs are small, use float multiplication + if (this.lessThan(Long.TWO_PWR_24_) && other.lessThan(Long.TWO_PWR_24_)) { + return Long.fromNumber(this.toNumber() * other.toNumber()); + } + + // Divide each Long into 4 chunks of 16 bits, and then add up 4x4 products. + // We can skip products that would overflow. + + var a48 = this.high_ >>> 16; + var a32 = this.high_ & 0xffff; + var a16 = this.low_ >>> 16; + var a00 = this.low_ & 0xffff; + + var b48 = other.high_ >>> 16; + var b32 = other.high_ & 0xffff; + var b16 = other.low_ >>> 16; + var b00 = other.low_ & 0xffff; + + var c48 = 0, + c32 = 0, + c16 = 0, + c00 = 0; + c00 += a00 * b00; + c16 += c00 >>> 16; + c00 &= 0xffff; + c16 += a16 * b00; + c32 += c16 >>> 16; + c16 &= 0xffff; + c16 += a00 * b16; + c32 += c16 >>> 16; + c16 &= 0xffff; + c32 += a32 * b00; + c48 += c32 >>> 16; + c32 &= 0xffff; + c32 += a16 * b16; + c48 += c32 >>> 16; + c32 &= 0xffff; + c32 += a00 * b32; + c48 += c32 >>> 16; + c32 &= 0xffff; + c48 += a48 * b00 + a32 * b16 + a16 * b32 + a00 * b48; + c48 &= 0xffff; + return Long.fromBits((c16 << 16) | c00, (c48 << 16) | c32); +}; + +/** + * Returns this Long divided by the given one. + * + * @method + * @param {Long} other Long by which to divide. + * @return {Long} this Long divided by the given one. + */ +Long.prototype.div = function(other) { + if (other.isZero()) { + throw Error('division by zero'); + } else if (this.isZero()) { + return Long.ZERO; + } + + if (this.equals(Long.MIN_VALUE)) { + if (other.equals(Long.ONE) || other.equals(Long.NEG_ONE)) { + return Long.MIN_VALUE; // recall that -MIN_VALUE == MIN_VALUE + } else if (other.equals(Long.MIN_VALUE)) { + return Long.ONE; + } else { + // At this point, we have |other| >= 2, so |this/other| < |MIN_VALUE|. + var halfThis = this.shiftRight(1); + var approx = halfThis.div(other).shiftLeft(1); + if (approx.equals(Long.ZERO)) { + return other.isNegative() ? Long.ONE : Long.NEG_ONE; + } else { + var rem = this.subtract(other.multiply(approx)); + var result = approx.add(rem.div(other)); + return result; + } + } + } else if (other.equals(Long.MIN_VALUE)) { + return Long.ZERO; + } + + if (this.isNegative()) { + if (other.isNegative()) { + return this.negate().div(other.negate()); + } else { + return this.negate() + .div(other) + .negate(); + } + } else if (other.isNegative()) { + return this.div(other.negate()).negate(); + } + + // Repeat the following until the remainder is less than other: find a + // floating-point that approximates remainder / other *from below*, add this + // into the result, and subtract it from the remainder. It is critical that + // the approximate value is less than or equal to the real value so that the + // remainder never becomes negative. + var res = Long.ZERO; + rem = this; + while (rem.greaterThanOrEqual(other)) { + // Approximate the result of division. This may be a little greater or + // smaller than the actual value. + approx = Math.max(1, Math.floor(rem.toNumber() / other.toNumber())); + + // We will tweak the approximate result by changing it in the 48-th digit or + // the smallest non-fractional digit, whichever is larger. + var log2 = Math.ceil(Math.log(approx) / Math.LN2); + var delta = log2 <= 48 ? 1 : Math.pow(2, log2 - 48); + + // Decrease the approximation until it is smaller than the remainder. Note + // that if it is too large, the product overflows and is negative. + var approxRes = Long.fromNumber(approx); + var approxRem = approxRes.multiply(other); + while (approxRem.isNegative() || approxRem.greaterThan(rem)) { + approx -= delta; + approxRes = Long.fromNumber(approx); + approxRem = approxRes.multiply(other); + } + + // We know the answer can't be zero... and actually, zero would cause + // infinite recursion since we would make no progress. + if (approxRes.isZero()) { + approxRes = Long.ONE; + } + + res = res.add(approxRes); + rem = rem.subtract(approxRem); + } + return res; +}; + +/** + * Returns this Long modulo the given one. + * + * @method + * @param {Long} other Long by which to mod. + * @return {Long} this Long modulo the given one. + */ +Long.prototype.modulo = function(other) { + return this.subtract(this.div(other).multiply(other)); +}; + +/** + * The bitwise-NOT of this value. + * + * @method + * @return {Long} the bitwise-NOT of this value. + */ +Long.prototype.not = function() { + return Long.fromBits(~this.low_, ~this.high_); +}; + +/** + * Returns the bitwise-AND of this Long and the given one. + * + * @method + * @param {Long} other the Long with which to AND. + * @return {Long} the bitwise-AND of this and the other. + */ +Long.prototype.and = function(other) { + return Long.fromBits(this.low_ & other.low_, this.high_ & other.high_); +}; + +/** + * Returns the bitwise-OR of this Long and the given one. + * + * @method + * @param {Long} other the Long with which to OR. + * @return {Long} the bitwise-OR of this and the other. + */ +Long.prototype.or = function(other) { + return Long.fromBits(this.low_ | other.low_, this.high_ | other.high_); +}; + +/** + * Returns the bitwise-XOR of this Long and the given one. + * + * @method + * @param {Long} other the Long with which to XOR. + * @return {Long} the bitwise-XOR of this and the other. + */ +Long.prototype.xor = function(other) { + return Long.fromBits(this.low_ ^ other.low_, this.high_ ^ other.high_); +}; + +/** + * Returns this Long with bits shifted to the left by the given amount. + * + * @method + * @param {number} numBits the number of bits by which to shift. + * @return {Long} this shifted to the left by the given amount. + */ +Long.prototype.shiftLeft = function(numBits) { + numBits &= 63; + if (numBits === 0) { + return this; + } else { + var low = this.low_; + if (numBits < 32) { + var high = this.high_; + return Long.fromBits(low << numBits, (high << numBits) | (low >>> (32 - numBits))); + } else { + return Long.fromBits(0, low << (numBits - 32)); + } + } +}; + +/** + * Returns this Long with bits shifted to the right by the given amount. + * + * @method + * @param {number} numBits the number of bits by which to shift. + * @return {Long} this shifted to the right by the given amount. + */ +Long.prototype.shiftRight = function(numBits) { + numBits &= 63; + if (numBits === 0) { + return this; + } else { + var high = this.high_; + if (numBits < 32) { + var low = this.low_; + return Long.fromBits((low >>> numBits) | (high << (32 - numBits)), high >> numBits); + } else { + return Long.fromBits(high >> (numBits - 32), high >= 0 ? 0 : -1); + } + } +}; + +/** + * Returns this Long with bits shifted to the right by the given amount, with the new top bits matching the current sign bit. + * + * @method + * @param {number} numBits the number of bits by which to shift. + * @return {Long} this shifted to the right by the given amount, with zeros placed into the new leading bits. + */ +Long.prototype.shiftRightUnsigned = function(numBits) { + numBits &= 63; + if (numBits === 0) { + return this; + } else { + var high = this.high_; + if (numBits < 32) { + var low = this.low_; + return Long.fromBits((low >>> numBits) | (high << (32 - numBits)), high >>> numBits); + } else if (numBits === 32) { + return Long.fromBits(high, 0); + } else { + return Long.fromBits(high >>> (numBits - 32), 0); + } + } +}; + +/** + * Returns a Long representing the given (32-bit) integer value. + * + * @method + * @param {number} value the 32-bit integer in question. + * @return {Long} the corresponding Long value. + */ +Long.fromInt = function(value) { + if (-128 <= value && value < 128) { + var cachedObj = Long.INT_CACHE_[value]; + if (cachedObj) { + return cachedObj; + } + } + + var obj = new Long(value | 0, value < 0 ? -1 : 0); + if (-128 <= value && value < 128) { + Long.INT_CACHE_[value] = obj; + } + return obj; +}; + +/** + * Returns a Long representing the given value, provided that it is a finite number. Otherwise, zero is returned. + * + * @method + * @param {number} value the number in question. + * @return {Long} the corresponding Long value. + */ +Long.fromNumber = function(value) { + if (isNaN(value) || !isFinite(value)) { + return Long.ZERO; + } else if (value <= -Long.TWO_PWR_63_DBL_) { + return Long.MIN_VALUE; + } else if (value + 1 >= Long.TWO_PWR_63_DBL_) { + return Long.MAX_VALUE; + } else if (value < 0) { + return Long.fromNumber(-value).negate(); + } else { + return new Long((value % Long.TWO_PWR_32_DBL_) | 0, (value / Long.TWO_PWR_32_DBL_) | 0); + } +}; + +/** + * Returns a Long representing the 64-bit integer that comes by concatenating the given high and low bits. Each is assumed to use 32 bits. + * + * @method + * @param {number} lowBits the low 32-bits. + * @param {number} highBits the high 32-bits. + * @return {Long} the corresponding Long value. + */ +Long.fromBits = function(lowBits, highBits) { + return new Long(lowBits, highBits); +}; + +/** + * Returns a Long representation of the given string, written using the given radix. + * + * @method + * @param {string} str the textual representation of the Long. + * @param {number} opt_radix the radix in which the text is written. + * @return {Long} the corresponding Long value. + */ +Long.fromString = function(str, opt_radix) { + if (str.length === 0) { + throw Error('number format error: empty string'); + } + + var radix = opt_radix || 10; + if (radix < 2 || 36 < radix) { + throw Error('radix out of range: ' + radix); + } + + if (str.charAt(0) === '-') { + return Long.fromString(str.substring(1), radix).negate(); + } else if (str.indexOf('-') >= 0) { + throw Error('number format error: interior "-" character: ' + str); + } + + // Do several (8) digits each time through the loop, so as to + // minimize the calls to the very expensive emulated div. + var radixToPower = Long.fromNumber(Math.pow(radix, 8)); + + var result = Long.ZERO; + for (var i = 0; i < str.length; i += 8) { + var size = Math.min(8, str.length - i); + var value = parseInt(str.substring(i, i + size), radix); + if (size < 8) { + var power = Long.fromNumber(Math.pow(radix, size)); + result = result.multiply(power).add(Long.fromNumber(value)); + } else { + result = result.multiply(radixToPower); + result = result.add(Long.fromNumber(value)); + } + } + return result; +}; + +// NOTE: Common constant values ZERO, ONE, NEG_ONE, etc. are defined below the +// from* methods on which they depend. + +/** + * A cache of the Long representations of small integer values. + * @type {Object} + * @ignore + */ +Long.INT_CACHE_ = {}; + +// NOTE: the compiler should inline these constant values below and then remove +// these variables, so there should be no runtime penalty for these. + +/** + * Number used repeated below in calculations. This must appear before the + * first call to any from* function below. + * @type {number} + * @ignore + */ +Long.TWO_PWR_16_DBL_ = 1 << 16; + +/** + * @type {number} + * @ignore + */ +Long.TWO_PWR_24_DBL_ = 1 << 24; + +/** + * @type {number} + * @ignore + */ +Long.TWO_PWR_32_DBL_ = Long.TWO_PWR_16_DBL_ * Long.TWO_PWR_16_DBL_; + +/** + * @type {number} + * @ignore + */ +Long.TWO_PWR_31_DBL_ = Long.TWO_PWR_32_DBL_ / 2; + +/** + * @type {number} + * @ignore + */ +Long.TWO_PWR_48_DBL_ = Long.TWO_PWR_32_DBL_ * Long.TWO_PWR_16_DBL_; + +/** + * @type {number} + * @ignore + */ +Long.TWO_PWR_64_DBL_ = Long.TWO_PWR_32_DBL_ * Long.TWO_PWR_32_DBL_; + +/** + * @type {number} + * @ignore + */ +Long.TWO_PWR_63_DBL_ = Long.TWO_PWR_64_DBL_ / 2; + +/** @type {Long} */ +Long.ZERO = Long.fromInt(0); + +/** @type {Long} */ +Long.ONE = Long.fromInt(1); + +/** @type {Long} */ +Long.NEG_ONE = Long.fromInt(-1); + +/** @type {Long} */ +Long.MAX_VALUE = Long.fromBits(0xffffffff | 0, 0x7fffffff | 0); + +/** @type {Long} */ +Long.MIN_VALUE = Long.fromBits(0, 0x80000000 | 0); + +/** + * @type {Long} + * @ignore + */ +Long.TWO_PWR_24_ = Long.fromInt(1 << 24); + +/** + * Expose. + */ +module.exports = Long; +module.exports.Long = Long; diff --git a/node_modules/bson/lib/bson/map.js b/node_modules/bson/lib/bson/map.js new file mode 100644 index 0000000..7edb4f2 --- /dev/null +++ b/node_modules/bson/lib/bson/map.js @@ -0,0 +1,128 @@ +'use strict'; + +// We have an ES6 Map available, return the native instance +if (typeof global.Map !== 'undefined') { + module.exports = global.Map; + module.exports.Map = global.Map; +} else { + // We will return a polyfill + var Map = function(array) { + this._keys = []; + this._values = {}; + + for (var i = 0; i < array.length; i++) { + if (array[i] == null) continue; // skip null and undefined + var entry = array[i]; + var key = entry[0]; + var value = entry[1]; + // Add the key to the list of keys in order + this._keys.push(key); + // Add the key and value to the values dictionary with a point + // to the location in the ordered keys list + this._values[key] = { v: value, i: this._keys.length - 1 }; + } + }; + + Map.prototype.clear = function() { + this._keys = []; + this._values = {}; + }; + + Map.prototype.delete = function(key) { + var value = this._values[key]; + if (value == null) return false; + // Delete entry + delete this._values[key]; + // Remove the key from the ordered keys list + this._keys.splice(value.i, 1); + return true; + }; + + Map.prototype.entries = function() { + var self = this; + var index = 0; + + return { + next: function() { + var key = self._keys[index++]; + return { + value: key !== undefined ? [key, self._values[key].v] : undefined, + done: key !== undefined ? false : true + }; + } + }; + }; + + Map.prototype.forEach = function(callback, self) { + self = self || this; + + for (var i = 0; i < this._keys.length; i++) { + var key = this._keys[i]; + // Call the forEach callback + callback.call(self, this._values[key].v, key, self); + } + }; + + Map.prototype.get = function(key) { + return this._values[key] ? this._values[key].v : undefined; + }; + + Map.prototype.has = function(key) { + return this._values[key] != null; + }; + + Map.prototype.keys = function() { + var self = this; + var index = 0; + + return { + next: function() { + var key = self._keys[index++]; + return { + value: key !== undefined ? key : undefined, + done: key !== undefined ? false : true + }; + } + }; + }; + + Map.prototype.set = function(key, value) { + if (this._values[key]) { + this._values[key].v = value; + return this; + } + + // Add the key to the list of keys in order + this._keys.push(key); + // Add the key and value to the values dictionary with a point + // to the location in the ordered keys list + this._values[key] = { v: value, i: this._keys.length - 1 }; + return this; + }; + + Map.prototype.values = function() { + var self = this; + var index = 0; + + return { + next: function() { + var key = self._keys[index++]; + return { + value: key !== undefined ? self._values[key].v : undefined, + done: key !== undefined ? false : true + }; + } + }; + }; + + // Last ismaster + Object.defineProperty(Map.prototype, 'size', { + enumerable: true, + get: function() { + return this._keys.length; + } + }); + + module.exports = Map; + module.exports.Map = Map; +} diff --git a/node_modules/bson/lib/bson/max_key.js b/node_modules/bson/lib/bson/max_key.js new file mode 100644 index 0000000..eebca7b --- /dev/null +++ b/node_modules/bson/lib/bson/max_key.js @@ -0,0 +1,14 @@ +/** + * A class representation of the BSON MaxKey type. + * + * @class + * @return {MaxKey} A MaxKey instance + */ +function MaxKey() { + if (!(this instanceof MaxKey)) return new MaxKey(); + + this._bsontype = 'MaxKey'; +} + +module.exports = MaxKey; +module.exports.MaxKey = MaxKey; diff --git a/node_modules/bson/lib/bson/min_key.js b/node_modules/bson/lib/bson/min_key.js new file mode 100644 index 0000000..15f4522 --- /dev/null +++ b/node_modules/bson/lib/bson/min_key.js @@ -0,0 +1,14 @@ +/** + * A class representation of the BSON MinKey type. + * + * @class + * @return {MinKey} A MinKey instance + */ +function MinKey() { + if (!(this instanceof MinKey)) return new MinKey(); + + this._bsontype = 'MinKey'; +} + +module.exports = MinKey; +module.exports.MinKey = MinKey; diff --git a/node_modules/bson/lib/bson/objectid.js b/node_modules/bson/lib/bson/objectid.js new file mode 100644 index 0000000..0ebcc03 --- /dev/null +++ b/node_modules/bson/lib/bson/objectid.js @@ -0,0 +1,392 @@ +// Custom inspect property name / symbol. +var inspect = 'inspect'; + +var utils = require('./parser/utils'); + +/** + * Machine id. + * + * Create a random 3-byte value (i.e. unique for this + * process). Other drivers use a md5 of the machine id here, but + * that would mean an asyc call to gethostname, so we don't bother. + * @ignore + */ +var MACHINE_ID = parseInt(Math.random() * 0xffffff, 10); + +// Regular expression that checks for hex value +var checkForHexRegExp = new RegExp('^[0-9a-fA-F]{24}$'); + +// Check if buffer exists +try { + if (Buffer && Buffer.from) { + var hasBufferType = true; + inspect = require('util').inspect.custom || 'inspect'; + } +} catch (err) { + hasBufferType = false; +} + +/** +* Create a new ObjectID instance +* +* @class +* @param {(string|number)} id Can be a 24 byte hex string, 12 byte binary string or a Number. +* @property {number} generationTime The generation time of this ObjectId instance +* @return {ObjectID} instance of ObjectID. +*/ +var ObjectID = function ObjectID(id) { + // Duck-typing to support ObjectId from different npm packages + if (id instanceof ObjectID) return id; + if (!(this instanceof ObjectID)) return new ObjectID(id); + + this._bsontype = 'ObjectID'; + + // The most common usecase (blank id, new objectId instance) + if (id == null || typeof id === 'number') { + // Generate a new id + this.id = this.generate(id); + // If we are caching the hex string + if (ObjectID.cacheHexString) this.__id = this.toString('hex'); + // Return the object + return; + } + + // Check if the passed in id is valid + var valid = ObjectID.isValid(id); + + // Throw an error if it's not a valid setup + if (!valid && id != null) { + throw new Error( + 'Argument passed in must be a single String of 12 bytes or a string of 24 hex characters' + ); + } else if (valid && typeof id === 'string' && id.length === 24 && hasBufferType) { + return new ObjectID(utils.toBuffer(id, 'hex')); + } else if (valid && typeof id === 'string' && id.length === 24) { + return ObjectID.createFromHexString(id); + } else if (id != null && id.length === 12) { + // assume 12 byte string + this.id = id; + } else if (id != null && typeof id.toHexString === 'function') { + // Duck-typing to support ObjectId from different npm packages + return id; + } else { + throw new Error( + 'Argument passed in must be a single String of 12 bytes or a string of 24 hex characters' + ); + } + + if (ObjectID.cacheHexString) this.__id = this.toString('hex'); +}; + +// Allow usage of ObjectId as well as ObjectID +// var ObjectId = ObjectID; + +// Precomputed hex table enables speedy hex string conversion +var hexTable = []; +for (var i = 0; i < 256; i++) { + hexTable[i] = (i <= 15 ? '0' : '') + i.toString(16); +} + +/** +* Return the ObjectID id as a 24 byte hex string representation +* +* @method +* @return {string} return the 24 byte hex string representation. +*/ +ObjectID.prototype.toHexString = function() { + if (ObjectID.cacheHexString && this.__id) return this.__id; + + var hexString = ''; + if (!this.id || !this.id.length) { + throw new Error( + 'invalid ObjectId, ObjectId.id must be either a string or a Buffer, but is [' + + JSON.stringify(this.id) + + ']' + ); + } + + if (this.id instanceof _Buffer) { + hexString = convertToHex(this.id); + if (ObjectID.cacheHexString) this.__id = hexString; + return hexString; + } + + for (var i = 0; i < this.id.length; i++) { + hexString += hexTable[this.id.charCodeAt(i)]; + } + + if (ObjectID.cacheHexString) this.__id = hexString; + return hexString; +}; + +/** +* Update the ObjectID index used in generating new ObjectID's on the driver +* +* @method +* @return {number} returns next index value. +* @ignore +*/ +ObjectID.prototype.get_inc = function() { + return (ObjectID.index = (ObjectID.index + 1) % 0xffffff); +}; + +/** +* Update the ObjectID index used in generating new ObjectID's on the driver +* +* @method +* @return {number} returns next index value. +* @ignore +*/ +ObjectID.prototype.getInc = function() { + return this.get_inc(); +}; + +/** +* Generate a 12 byte id buffer used in ObjectID's +* +* @method +* @param {number} [time] optional parameter allowing to pass in a second based timestamp. +* @return {Buffer} return the 12 byte id buffer string. +*/ +ObjectID.prototype.generate = function(time) { + if ('number' !== typeof time) { + time = ~~(Date.now() / 1000); + } + + // Use pid + var pid = + (typeof process === 'undefined' || process.pid === 1 + ? Math.floor(Math.random() * 100000) + : process.pid) % 0xffff; + var inc = this.get_inc(); + // Buffer used + var buffer = utils.allocBuffer(12); + // Encode time + buffer[3] = time & 0xff; + buffer[2] = (time >> 8) & 0xff; + buffer[1] = (time >> 16) & 0xff; + buffer[0] = (time >> 24) & 0xff; + // Encode machine + buffer[6] = MACHINE_ID & 0xff; + buffer[5] = (MACHINE_ID >> 8) & 0xff; + buffer[4] = (MACHINE_ID >> 16) & 0xff; + // Encode pid + buffer[8] = pid & 0xff; + buffer[7] = (pid >> 8) & 0xff; + // Encode index + buffer[11] = inc & 0xff; + buffer[10] = (inc >> 8) & 0xff; + buffer[9] = (inc >> 16) & 0xff; + // Return the buffer + return buffer; +}; + +/** +* Converts the id into a 24 byte hex string for printing +* +* @param {String} format The Buffer toString format parameter. +* @return {String} return the 24 byte hex string representation. +* @ignore +*/ +ObjectID.prototype.toString = function(format) { + // Is the id a buffer then use the buffer toString method to return the format + if (this.id && this.id.copy) { + return this.id.toString(typeof format === 'string' ? format : 'hex'); + } + + // if(this.buffer ) + return this.toHexString(); +}; + +/** +* Converts to a string representation of this Id. +* +* @return {String} return the 24 byte hex string representation. +* @ignore +*/ +ObjectID.prototype[inspect] = ObjectID.prototype.toString; + +/** +* Converts to its JSON representation. +* +* @return {String} return the 24 byte hex string representation. +* @ignore +*/ +ObjectID.prototype.toJSON = function() { + return this.toHexString(); +}; + +/** +* Compares the equality of this ObjectID with `otherID`. +* +* @method +* @param {object} otherID ObjectID instance to compare against. +* @return {boolean} the result of comparing two ObjectID's +*/ +ObjectID.prototype.equals = function equals(otherId) { + // var id; + + if (otherId instanceof ObjectID) { + return this.toString() === otherId.toString(); + } else if ( + typeof otherId === 'string' && + ObjectID.isValid(otherId) && + otherId.length === 12 && + this.id instanceof _Buffer + ) { + return otherId === this.id.toString('binary'); + } else if (typeof otherId === 'string' && ObjectID.isValid(otherId) && otherId.length === 24) { + return otherId.toLowerCase() === this.toHexString(); + } else if (typeof otherId === 'string' && ObjectID.isValid(otherId) && otherId.length === 12) { + return otherId === this.id; + } else if (otherId != null && (otherId instanceof ObjectID || otherId.toHexString)) { + return otherId.toHexString() === this.toHexString(); + } else { + return false; + } +}; + +/** +* Returns the generation date (accurate up to the second) that this ID was generated. +* +* @method +* @return {date} the generation date +*/ +ObjectID.prototype.getTimestamp = function() { + var timestamp = new Date(); + var time = this.id[3] | (this.id[2] << 8) | (this.id[1] << 16) | (this.id[0] << 24); + timestamp.setTime(Math.floor(time) * 1000); + return timestamp; +}; + +/** +* @ignore +*/ +ObjectID.index = ~~(Math.random() * 0xffffff); + +/** +* @ignore +*/ +ObjectID.createPk = function createPk() { + return new ObjectID(); +}; + +/** +* Creates an ObjectID from a second based number, with the rest of the ObjectID zeroed out. Used for comparisons or sorting the ObjectID. +* +* @method +* @param {number} time an integer number representing a number of seconds. +* @return {ObjectID} return the created ObjectID +*/ +ObjectID.createFromTime = function createFromTime(time) { + var buffer = utils.toBuffer([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]); + // Encode time into first 4 bytes + buffer[3] = time & 0xff; + buffer[2] = (time >> 8) & 0xff; + buffer[1] = (time >> 16) & 0xff; + buffer[0] = (time >> 24) & 0xff; + // Return the new objectId + return new ObjectID(buffer); +}; + +// Lookup tables +//var encodeLookup = '0123456789abcdef'.split(''); +var decodeLookup = []; +i = 0; +while (i < 10) decodeLookup[0x30 + i] = i++; +while (i < 16) decodeLookup[0x41 - 10 + i] = decodeLookup[0x61 - 10 + i] = i++; + +var _Buffer = Buffer; +var convertToHex = function(bytes) { + return bytes.toString('hex'); +}; + +/** +* Creates an ObjectID from a hex string representation of an ObjectID. +* +* @method +* @param {string} hexString create a ObjectID from a passed in 24 byte hexstring. +* @return {ObjectID} return the created ObjectID +*/ +ObjectID.createFromHexString = function createFromHexString(string) { + // Throw an error if it's not a valid setup + if (typeof string === 'undefined' || (string != null && string.length !== 24)) { + throw new Error( + 'Argument passed in must be a single String of 12 bytes or a string of 24 hex characters' + ); + } + + // Use Buffer.from method if available + if (hasBufferType) return new ObjectID(utils.toBuffer(string, 'hex')); + + // Calculate lengths + var array = new _Buffer(12); + var n = 0; + var i = 0; + + while (i < 24) { + array[n++] = (decodeLookup[string.charCodeAt(i++)] << 4) | decodeLookup[string.charCodeAt(i++)]; + } + + return new ObjectID(array); +}; + +/** +* Checks if a value is a valid bson ObjectId +* +* @method +* @return {boolean} return true if the value is a valid bson ObjectId, return false otherwise. +*/ +ObjectID.isValid = function isValid(id) { + if (id == null) return false; + + if (typeof id === 'number') { + return true; + } + + if (typeof id === 'string') { + return id.length === 12 || (id.length === 24 && checkForHexRegExp.test(id)); + } + + if (id instanceof ObjectID) { + return true; + } + + if (id instanceof _Buffer) { + return true; + } + + // Duck-Typing detection of ObjectId like objects + if ( + typeof id.toHexString === 'function' && + (id.id instanceof _Buffer || typeof id.id === 'string') + ) { + return id.id.length === 12 || (id.id.length === 24 && checkForHexRegExp.test(id.id)); + } + + return false; +}; + +/** +* @ignore +*/ +Object.defineProperty(ObjectID.prototype, 'generationTime', { + enumerable: true, + get: function() { + return this.id[3] | (this.id[2] << 8) | (this.id[1] << 16) | (this.id[0] << 24); + }, + set: function(value) { + // Encode time into first 4 bytes + this.id[3] = value & 0xff; + this.id[2] = (value >> 8) & 0xff; + this.id[1] = (value >> 16) & 0xff; + this.id[0] = (value >> 24) & 0xff; + } +}); + +/** + * Expose. + */ +module.exports = ObjectID; +module.exports.ObjectID = ObjectID; +module.exports.ObjectId = ObjectID; diff --git a/node_modules/bson/lib/bson/parser/calculate_size.js b/node_modules/bson/lib/bson/parser/calculate_size.js new file mode 100644 index 0000000..7e0026c --- /dev/null +++ b/node_modules/bson/lib/bson/parser/calculate_size.js @@ -0,0 +1,255 @@ +'use strict'; + +var Long = require('../long').Long, + Double = require('../double').Double, + Timestamp = require('../timestamp').Timestamp, + ObjectID = require('../objectid').ObjectID, + Symbol = require('../symbol').Symbol, + BSONRegExp = require('../regexp').BSONRegExp, + Code = require('../code').Code, + Decimal128 = require('../decimal128'), + MinKey = require('../min_key').MinKey, + MaxKey = require('../max_key').MaxKey, + DBRef = require('../db_ref').DBRef, + Binary = require('../binary').Binary; + +var normalizedFunctionString = require('./utils').normalizedFunctionString; + +// To ensure that 0.4 of node works correctly +var isDate = function isDate(d) { + return typeof d === 'object' && Object.prototype.toString.call(d) === '[object Date]'; +}; + +var calculateObjectSize = function calculateObjectSize( + object, + serializeFunctions, + ignoreUndefined +) { + var totalLength = 4 + 1; + + if (Array.isArray(object)) { + for (var i = 0; i < object.length; i++) { + totalLength += calculateElement( + i.toString(), + object[i], + serializeFunctions, + true, + ignoreUndefined + ); + } + } else { + // If we have toBSON defined, override the current object + if (object.toBSON) { + object = object.toBSON(); + } + + // Calculate size + for (var key in object) { + totalLength += calculateElement(key, object[key], serializeFunctions, false, ignoreUndefined); + } + } + + return totalLength; +}; + +/** + * @ignore + * @api private + */ +function calculateElement(name, value, serializeFunctions, isArray, ignoreUndefined) { + // If we have toBSON defined, override the current object + if (value && value.toBSON) { + value = value.toBSON(); + } + + switch (typeof value) { + case 'string': + return 1 + Buffer.byteLength(name, 'utf8') + 1 + 4 + Buffer.byteLength(value, 'utf8') + 1; + case 'number': + if (Math.floor(value) === value && value >= BSON.JS_INT_MIN && value <= BSON.JS_INT_MAX) { + if (value >= BSON.BSON_INT32_MIN && value <= BSON.BSON_INT32_MAX) { + // 32 bit + return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (4 + 1); + } else { + return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (8 + 1); + } + } else { + // 64 bit + return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (8 + 1); + } + case 'undefined': + if (isArray || !ignoreUndefined) + return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + 1; + return 0; + case 'boolean': + return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (1 + 1); + case 'object': + if ( + value == null || + value instanceof MinKey || + value instanceof MaxKey || + value['_bsontype'] === 'MinKey' || + value['_bsontype'] === 'MaxKey' + ) { + return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + 1; + } else if (value instanceof ObjectID || value['_bsontype'] === 'ObjectID' || value['_bsontype'] === 'ObjectId') { + return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (12 + 1); + } else if (value instanceof Date || isDate(value)) { + return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (8 + 1); + } else if (typeof Buffer !== 'undefined' && Buffer.isBuffer(value)) { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (1 + 4 + 1) + value.length + ); + } else if ( + value instanceof Long || + value instanceof Double || + value instanceof Timestamp || + value['_bsontype'] === 'Long' || + value['_bsontype'] === 'Double' || + value['_bsontype'] === 'Timestamp' + ) { + return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (8 + 1); + } else if (value instanceof Decimal128 || value['_bsontype'] === 'Decimal128') { + return (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (16 + 1); + } else if (value instanceof Code || value['_bsontype'] === 'Code') { + // Calculate size depending on the availability of a scope + if (value.scope != null && Object.keys(value.scope).length > 0) { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + 1 + + 4 + + 4 + + Buffer.byteLength(value.code.toString(), 'utf8') + + 1 + + calculateObjectSize(value.scope, serializeFunctions, ignoreUndefined) + ); + } else { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + 1 + + 4 + + Buffer.byteLength(value.code.toString(), 'utf8') + + 1 + ); + } + } else if (value instanceof Binary || value['_bsontype'] === 'Binary') { + // Check what kind of subtype we have + if (value.sub_type === Binary.SUBTYPE_BYTE_ARRAY) { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + (value.position + 1 + 4 + 1 + 4) + ); + } else { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + (value.position + 1 + 4 + 1) + ); + } + } else if (value instanceof Symbol || value['_bsontype'] === 'Symbol') { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + Buffer.byteLength(value.value, 'utf8') + + 4 + + 1 + + 1 + ); + } else if (value instanceof DBRef || value['_bsontype'] === 'DBRef') { + // Set up correct object for serialization + var ordered_values = { + $ref: value.namespace, + $id: value.oid + }; + + // Add db reference if it exists + if (null != value.db) { + ordered_values['$db'] = value.db; + } + + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + 1 + + calculateObjectSize(ordered_values, serializeFunctions, ignoreUndefined) + ); + } else if ( + value instanceof RegExp || + Object.prototype.toString.call(value) === '[object RegExp]' + ) { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + 1 + + Buffer.byteLength(value.source, 'utf8') + + 1 + + (value.global ? 1 : 0) + + (value.ignoreCase ? 1 : 0) + + (value.multiline ? 1 : 0) + + 1 + ); + } else if (value instanceof BSONRegExp || value['_bsontype'] === 'BSONRegExp') { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + 1 + + Buffer.byteLength(value.pattern, 'utf8') + + 1 + + Buffer.byteLength(value.options, 'utf8') + + 1 + ); + } else { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + calculateObjectSize(value, serializeFunctions, ignoreUndefined) + + 1 + ); + } + case 'function': + // WTF for 0.4.X where typeof /someregexp/ === 'function' + if ( + value instanceof RegExp || + Object.prototype.toString.call(value) === '[object RegExp]' || + String.call(value) === '[object RegExp]' + ) { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + 1 + + Buffer.byteLength(value.source, 'utf8') + + 1 + + (value.global ? 1 : 0) + + (value.ignoreCase ? 1 : 0) + + (value.multiline ? 1 : 0) + + 1 + ); + } else { + if (serializeFunctions && value.scope != null && Object.keys(value.scope).length > 0) { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + 1 + + 4 + + 4 + + Buffer.byteLength(normalizedFunctionString(value), 'utf8') + + 1 + + calculateObjectSize(value.scope, serializeFunctions, ignoreUndefined) + ); + } else if (serializeFunctions) { + return ( + (name != null ? Buffer.byteLength(name, 'utf8') + 1 : 0) + + 1 + + 4 + + Buffer.byteLength(normalizedFunctionString(value), 'utf8') + + 1 + ); + } + } + } + + return 0; +} + +var BSON = {}; + +// BSON MAX VALUES +BSON.BSON_INT32_MAX = 0x7fffffff; +BSON.BSON_INT32_MIN = -0x80000000; + +// JS MAX PRECISE VALUES +BSON.JS_INT_MAX = 0x20000000000000; // Any integer up to 2^53 can be precisely represented by a double. +BSON.JS_INT_MIN = -0x20000000000000; // Any integer down to -2^53 can be precisely represented by a double. + +module.exports = calculateObjectSize; diff --git a/node_modules/bson/lib/bson/parser/deserializer.js b/node_modules/bson/lib/bson/parser/deserializer.js new file mode 100644 index 0000000..be3c865 --- /dev/null +++ b/node_modules/bson/lib/bson/parser/deserializer.js @@ -0,0 +1,782 @@ +'use strict'; + +var Long = require('../long').Long, + Double = require('../double').Double, + Timestamp = require('../timestamp').Timestamp, + ObjectID = require('../objectid').ObjectID, + Symbol = require('../symbol').Symbol, + Code = require('../code').Code, + MinKey = require('../min_key').MinKey, + MaxKey = require('../max_key').MaxKey, + Decimal128 = require('../decimal128'), + Int32 = require('../int_32'), + DBRef = require('../db_ref').DBRef, + BSONRegExp = require('../regexp').BSONRegExp, + Binary = require('../binary').Binary; + +var utils = require('./utils'); + +var deserialize = function(buffer, options, isArray) { + options = options == null ? {} : options; + var index = options && options.index ? options.index : 0; + // Read the document size + var size = + buffer[index] | + (buffer[index + 1] << 8) | + (buffer[index + 2] << 16) | + (buffer[index + 3] << 24); + + // Ensure buffer is valid size + if (size < 5 || buffer.length < size || size + index > buffer.length) { + throw new Error('corrupt bson message'); + } + + // Illegal end value + if (buffer[index + size - 1] !== 0) { + throw new Error("One object, sized correctly, with a spot for an EOO, but the EOO isn't 0x00"); + } + + // Start deserializtion + return deserializeObject(buffer, index, options, isArray); +}; + +var deserializeObject = function(buffer, index, options, isArray) { + var evalFunctions = options['evalFunctions'] == null ? false : options['evalFunctions']; + var cacheFunctions = options['cacheFunctions'] == null ? false : options['cacheFunctions']; + var cacheFunctionsCrc32 = + options['cacheFunctionsCrc32'] == null ? false : options['cacheFunctionsCrc32']; + + if (!cacheFunctionsCrc32) var crc32 = null; + + var fieldsAsRaw = options['fieldsAsRaw'] == null ? null : options['fieldsAsRaw']; + + // Return raw bson buffer instead of parsing it + var raw = options['raw'] == null ? false : options['raw']; + + // Return BSONRegExp objects instead of native regular expressions + var bsonRegExp = typeof options['bsonRegExp'] === 'boolean' ? options['bsonRegExp'] : false; + + // Controls the promotion of values vs wrapper classes + var promoteBuffers = options['promoteBuffers'] == null ? false : options['promoteBuffers']; + var promoteLongs = options['promoteLongs'] == null ? true : options['promoteLongs']; + var promoteValues = options['promoteValues'] == null ? true : options['promoteValues']; + + // Set the start index + var startIndex = index; + + // Validate that we have at least 4 bytes of buffer + if (buffer.length < 5) throw new Error('corrupt bson message < 5 bytes long'); + + // Read the document size + var size = + buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24); + + // Ensure buffer is valid size + if (size < 5 || size > buffer.length) throw new Error('corrupt bson message'); + + // Create holding object + var object = isArray ? [] : {}; + // Used for arrays to skip having to perform utf8 decoding + var arrayIndex = 0; + + var done = false; + + // While we have more left data left keep parsing + // while (buffer[index + 1] !== 0) { + while (!done) { + // Read the type + var elementType = buffer[index++]; + // If we get a zero it's the last byte, exit + if (elementType === 0) break; + + // Get the start search index + var i = index; + // Locate the end of the c string + while (buffer[i] !== 0x00 && i < buffer.length) { + i++; + } + + // If are at the end of the buffer there is a problem with the document + if (i >= buffer.length) throw new Error('Bad BSON Document: illegal CString'); + var name = isArray ? arrayIndex++ : buffer.toString('utf8', index, i); + + index = i + 1; + + if (elementType === BSON.BSON_DATA_STRING) { + var stringSize = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + if ( + stringSize <= 0 || + stringSize > buffer.length - index || + buffer[index + stringSize - 1] !== 0 + ) + throw new Error('bad string length in bson'); + object[name] = buffer.toString('utf8', index, index + stringSize - 1); + index = index + stringSize; + } else if (elementType === BSON.BSON_DATA_OID) { + var oid = utils.allocBuffer(12); + buffer.copy(oid, 0, index, index + 12); + object[name] = new ObjectID(oid); + index = index + 12; + } else if (elementType === BSON.BSON_DATA_INT && promoteValues === false) { + object[name] = new Int32( + buffer[index++] | (buffer[index++] << 8) | (buffer[index++] << 16) | (buffer[index++] << 24) + ); + } else if (elementType === BSON.BSON_DATA_INT) { + object[name] = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + } else if (elementType === BSON.BSON_DATA_NUMBER && promoteValues === false) { + object[name] = new Double(buffer.readDoubleLE(index)); + index = index + 8; + } else if (elementType === BSON.BSON_DATA_NUMBER) { + object[name] = buffer.readDoubleLE(index); + index = index + 8; + } else if (elementType === BSON.BSON_DATA_DATE) { + var lowBits = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + var highBits = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + object[name] = new Date(new Long(lowBits, highBits).toNumber()); + } else if (elementType === BSON.BSON_DATA_BOOLEAN) { + if (buffer[index] !== 0 && buffer[index] !== 1) throw new Error('illegal boolean type value'); + object[name] = buffer[index++] === 1; + } else if (elementType === BSON.BSON_DATA_OBJECT) { + var _index = index; + var objectSize = + buffer[index] | + (buffer[index + 1] << 8) | + (buffer[index + 2] << 16) | + (buffer[index + 3] << 24); + if (objectSize <= 0 || objectSize > buffer.length - index) + throw new Error('bad embedded document length in bson'); + + // We have a raw value + if (raw) { + object[name] = buffer.slice(index, index + objectSize); + } else { + object[name] = deserializeObject(buffer, _index, options, false); + } + + index = index + objectSize; + } else if (elementType === BSON.BSON_DATA_ARRAY) { + _index = index; + objectSize = + buffer[index] | + (buffer[index + 1] << 8) | + (buffer[index + 2] << 16) | + (buffer[index + 3] << 24); + var arrayOptions = options; + + // Stop index + var stopIndex = index + objectSize; + + // All elements of array to be returned as raw bson + if (fieldsAsRaw && fieldsAsRaw[name]) { + arrayOptions = {}; + for (var n in options) arrayOptions[n] = options[n]; + arrayOptions['raw'] = true; + } + + object[name] = deserializeObject(buffer, _index, arrayOptions, true); + index = index + objectSize; + + if (buffer[index - 1] !== 0) throw new Error('invalid array terminator byte'); + if (index !== stopIndex) throw new Error('corrupted array bson'); + } else if (elementType === BSON.BSON_DATA_UNDEFINED) { + object[name] = undefined; + } else if (elementType === BSON.BSON_DATA_NULL) { + object[name] = null; + } else if (elementType === BSON.BSON_DATA_LONG) { + // Unpack the low and high bits + lowBits = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + highBits = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + var long = new Long(lowBits, highBits); + // Promote the long if possible + if (promoteLongs && promoteValues === true) { + object[name] = + long.lessThanOrEqual(JS_INT_MAX_LONG) && long.greaterThanOrEqual(JS_INT_MIN_LONG) + ? long.toNumber() + : long; + } else { + object[name] = long; + } + } else if (elementType === BSON.BSON_DATA_DECIMAL128) { + // Buffer to contain the decimal bytes + var bytes = utils.allocBuffer(16); + // Copy the next 16 bytes into the bytes buffer + buffer.copy(bytes, 0, index, index + 16); + // Update index + index = index + 16; + // Assign the new Decimal128 value + var decimal128 = new Decimal128(bytes); + // If we have an alternative mapper use that + object[name] = decimal128.toObject ? decimal128.toObject() : decimal128; + } else if (elementType === BSON.BSON_DATA_BINARY) { + var binarySize = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + var totalBinarySize = binarySize; + var subType = buffer[index++]; + + // Did we have a negative binary size, throw + if (binarySize < 0) throw new Error('Negative binary type element size found'); + + // Is the length longer than the document + if (binarySize > buffer.length) throw new Error('Binary type size larger than document size'); + + // Decode as raw Buffer object if options specifies it + if (buffer['slice'] != null) { + // If we have subtype 2 skip the 4 bytes for the size + if (subType === Binary.SUBTYPE_BYTE_ARRAY) { + binarySize = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + if (binarySize < 0) + throw new Error('Negative binary type element size found for subtype 0x02'); + if (binarySize > totalBinarySize - 4) + throw new Error('Binary type with subtype 0x02 contains to long binary size'); + if (binarySize < totalBinarySize - 4) + throw new Error('Binary type with subtype 0x02 contains to short binary size'); + } + + if (promoteBuffers && promoteValues) { + object[name] = buffer.slice(index, index + binarySize); + } else { + object[name] = new Binary(buffer.slice(index, index + binarySize), subType); + } + } else { + var _buffer = + typeof Uint8Array !== 'undefined' + ? new Uint8Array(new ArrayBuffer(binarySize)) + : new Array(binarySize); + // If we have subtype 2 skip the 4 bytes for the size + if (subType === Binary.SUBTYPE_BYTE_ARRAY) { + binarySize = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + if (binarySize < 0) + throw new Error('Negative binary type element size found for subtype 0x02'); + if (binarySize > totalBinarySize - 4) + throw new Error('Binary type with subtype 0x02 contains to long binary size'); + if (binarySize < totalBinarySize - 4) + throw new Error('Binary type with subtype 0x02 contains to short binary size'); + } + + // Copy the data + for (i = 0; i < binarySize; i++) { + _buffer[i] = buffer[index + i]; + } + + if (promoteBuffers && promoteValues) { + object[name] = _buffer; + } else { + object[name] = new Binary(_buffer, subType); + } + } + + // Update the index + index = index + binarySize; + } else if (elementType === BSON.BSON_DATA_REGEXP && bsonRegExp === false) { + // Get the start search index + i = index; + // Locate the end of the c string + while (buffer[i] !== 0x00 && i < buffer.length) { + i++; + } + // If are at the end of the buffer there is a problem with the document + if (i >= buffer.length) throw new Error('Bad BSON Document: illegal CString'); + // Return the C string + var source = buffer.toString('utf8', index, i); + // Create the regexp + index = i + 1; + + // Get the start search index + i = index; + // Locate the end of the c string + while (buffer[i] !== 0x00 && i < buffer.length) { + i++; + } + // If are at the end of the buffer there is a problem with the document + if (i >= buffer.length) throw new Error('Bad BSON Document: illegal CString'); + // Return the C string + var regExpOptions = buffer.toString('utf8', index, i); + index = i + 1; + + // For each option add the corresponding one for javascript + var optionsArray = new Array(regExpOptions.length); + + // Parse options + for (i = 0; i < regExpOptions.length; i++) { + switch (regExpOptions[i]) { + case 'm': + optionsArray[i] = 'm'; + break; + case 's': + optionsArray[i] = 'g'; + break; + case 'i': + optionsArray[i] = 'i'; + break; + } + } + + object[name] = new RegExp(source, optionsArray.join('')); + } else if (elementType === BSON.BSON_DATA_REGEXP && bsonRegExp === true) { + // Get the start search index + i = index; + // Locate the end of the c string + while (buffer[i] !== 0x00 && i < buffer.length) { + i++; + } + // If are at the end of the buffer there is a problem with the document + if (i >= buffer.length) throw new Error('Bad BSON Document: illegal CString'); + // Return the C string + source = buffer.toString('utf8', index, i); + index = i + 1; + + // Get the start search index + i = index; + // Locate the end of the c string + while (buffer[i] !== 0x00 && i < buffer.length) { + i++; + } + // If are at the end of the buffer there is a problem with the document + if (i >= buffer.length) throw new Error('Bad BSON Document: illegal CString'); + // Return the C string + regExpOptions = buffer.toString('utf8', index, i); + index = i + 1; + + // Set the object + object[name] = new BSONRegExp(source, regExpOptions); + } else if (elementType === BSON.BSON_DATA_SYMBOL) { + stringSize = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + if ( + stringSize <= 0 || + stringSize > buffer.length - index || + buffer[index + stringSize - 1] !== 0 + ) + throw new Error('bad string length in bson'); + object[name] = new Symbol(buffer.toString('utf8', index, index + stringSize - 1)); + index = index + stringSize; + } else if (elementType === BSON.BSON_DATA_TIMESTAMP) { + lowBits = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + highBits = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + object[name] = new Timestamp(lowBits, highBits); + } else if (elementType === BSON.BSON_DATA_MIN_KEY) { + object[name] = new MinKey(); + } else if (elementType === BSON.BSON_DATA_MAX_KEY) { + object[name] = new MaxKey(); + } else if (elementType === BSON.BSON_DATA_CODE) { + stringSize = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + if ( + stringSize <= 0 || + stringSize > buffer.length - index || + buffer[index + stringSize - 1] !== 0 + ) + throw new Error('bad string length in bson'); + var functionString = buffer.toString('utf8', index, index + stringSize - 1); + + // If we are evaluating the functions + if (evalFunctions) { + // If we have cache enabled let's look for the md5 of the function in the cache + if (cacheFunctions) { + var hash = cacheFunctionsCrc32 ? crc32(functionString) : functionString; + // Got to do this to avoid V8 deoptimizing the call due to finding eval + object[name] = isolateEvalWithHash(functionCache, hash, functionString, object); + } else { + object[name] = isolateEval(functionString); + } + } else { + object[name] = new Code(functionString); + } + + // Update parse index position + index = index + stringSize; + } else if (elementType === BSON.BSON_DATA_CODE_W_SCOPE) { + var totalSize = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + + // Element cannot be shorter than totalSize + stringSize + documentSize + terminator + if (totalSize < 4 + 4 + 4 + 1) { + throw new Error('code_w_scope total size shorter minimum expected length'); + } + + // Get the code string size + stringSize = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + // Check if we have a valid string + if ( + stringSize <= 0 || + stringSize > buffer.length - index || + buffer[index + stringSize - 1] !== 0 + ) + throw new Error('bad string length in bson'); + + // Javascript function + functionString = buffer.toString('utf8', index, index + stringSize - 1); + // Update parse index position + index = index + stringSize; + // Parse the element + _index = index; + // Decode the size of the object document + objectSize = + buffer[index] | + (buffer[index + 1] << 8) | + (buffer[index + 2] << 16) | + (buffer[index + 3] << 24); + // Decode the scope object + var scopeObject = deserializeObject(buffer, _index, options, false); + // Adjust the index + index = index + objectSize; + + // Check if field length is to short + if (totalSize < 4 + 4 + objectSize + stringSize) { + throw new Error('code_w_scope total size is to short, truncating scope'); + } + + // Check if totalSize field is to long + if (totalSize > 4 + 4 + objectSize + stringSize) { + throw new Error('code_w_scope total size is to long, clips outer document'); + } + + // If we are evaluating the functions + if (evalFunctions) { + // If we have cache enabled let's look for the md5 of the function in the cache + if (cacheFunctions) { + hash = cacheFunctionsCrc32 ? crc32(functionString) : functionString; + // Got to do this to avoid V8 deoptimizing the call due to finding eval + object[name] = isolateEvalWithHash(functionCache, hash, functionString, object); + } else { + object[name] = isolateEval(functionString); + } + + object[name].scope = scopeObject; + } else { + object[name] = new Code(functionString, scopeObject); + } + } else if (elementType === BSON.BSON_DATA_DBPOINTER) { + // Get the code string size + stringSize = + buffer[index++] | + (buffer[index++] << 8) | + (buffer[index++] << 16) | + (buffer[index++] << 24); + // Check if we have a valid string + if ( + stringSize <= 0 || + stringSize > buffer.length - index || + buffer[index + stringSize - 1] !== 0 + ) + throw new Error('bad string length in bson'); + // Namespace + var namespace = buffer.toString('utf8', index, index + stringSize - 1); + // Update parse index position + index = index + stringSize; + + // Read the oid + var oidBuffer = utils.allocBuffer(12); + buffer.copy(oidBuffer, 0, index, index + 12); + oid = new ObjectID(oidBuffer); + + // Update the index + index = index + 12; + + // Split the namespace + var parts = namespace.split('.'); + var db = parts.shift(); + var collection = parts.join('.'); + // Upgrade to DBRef type + object[name] = new DBRef(collection, oid, db); + } else { + throw new Error( + 'Detected unknown BSON type ' + + elementType.toString(16) + + ' for fieldname "' + + name + + '", are you using the latest BSON parser' + ); + } + } + + // Check if the deserialization was against a valid array/object + if (size !== index - startIndex) { + if (isArray) throw new Error('corrupt array bson'); + throw new Error('corrupt object bson'); + } + + // Check if we have a db ref object + if (object['$id'] != null) object = new DBRef(object['$ref'], object['$id'], object['$db']); + return object; +}; + +/** + * Ensure eval is isolated. + * + * @ignore + * @api private + */ +var isolateEvalWithHash = function(functionCache, hash, functionString, object) { + // Contains the value we are going to set + var value = null; + + // Check for cache hit, eval if missing and return cached function + if (functionCache[hash] == null) { + eval('value = ' + functionString); + functionCache[hash] = value; + } + // Set the object + return functionCache[hash].bind(object); +}; + +/** + * Ensure eval is isolated. + * + * @ignore + * @api private + */ +var isolateEval = function(functionString) { + // Contains the value we are going to set + var value = null; + // Eval the function + eval('value = ' + functionString); + return value; +}; + +var BSON = {}; + +/** + * Contains the function cache if we have that enable to allow for avoiding the eval step on each deserialization, comparison is by md5 + * + * @ignore + * @api private + */ +var functionCache = (BSON.functionCache = {}); + +/** + * Number BSON Type + * + * @classconstant BSON_DATA_NUMBER + **/ +BSON.BSON_DATA_NUMBER = 1; +/** + * String BSON Type + * + * @classconstant BSON_DATA_STRING + **/ +BSON.BSON_DATA_STRING = 2; +/** + * Object BSON Type + * + * @classconstant BSON_DATA_OBJECT + **/ +BSON.BSON_DATA_OBJECT = 3; +/** + * Array BSON Type + * + * @classconstant BSON_DATA_ARRAY + **/ +BSON.BSON_DATA_ARRAY = 4; +/** + * Binary BSON Type + * + * @classconstant BSON_DATA_BINARY + **/ +BSON.BSON_DATA_BINARY = 5; +/** + * Binary BSON Type + * + * @classconstant BSON_DATA_UNDEFINED + **/ +BSON.BSON_DATA_UNDEFINED = 6; +/** + * ObjectID BSON Type + * + * @classconstant BSON_DATA_OID + **/ +BSON.BSON_DATA_OID = 7; +/** + * Boolean BSON Type + * + * @classconstant BSON_DATA_BOOLEAN + **/ +BSON.BSON_DATA_BOOLEAN = 8; +/** + * Date BSON Type + * + * @classconstant BSON_DATA_DATE + **/ +BSON.BSON_DATA_DATE = 9; +/** + * null BSON Type + * + * @classconstant BSON_DATA_NULL + **/ +BSON.BSON_DATA_NULL = 10; +/** + * RegExp BSON Type + * + * @classconstant BSON_DATA_REGEXP + **/ +BSON.BSON_DATA_REGEXP = 11; +/** + * Code BSON Type + * + * @classconstant BSON_DATA_DBPOINTER + **/ +BSON.BSON_DATA_DBPOINTER = 12; +/** + * Code BSON Type + * + * @classconstant BSON_DATA_CODE + **/ +BSON.BSON_DATA_CODE = 13; +/** + * Symbol BSON Type + * + * @classconstant BSON_DATA_SYMBOL + **/ +BSON.BSON_DATA_SYMBOL = 14; +/** + * Code with Scope BSON Type + * + * @classconstant BSON_DATA_CODE_W_SCOPE + **/ +BSON.BSON_DATA_CODE_W_SCOPE = 15; +/** + * 32 bit Integer BSON Type + * + * @classconstant BSON_DATA_INT + **/ +BSON.BSON_DATA_INT = 16; +/** + * Timestamp BSON Type + * + * @classconstant BSON_DATA_TIMESTAMP + **/ +BSON.BSON_DATA_TIMESTAMP = 17; +/** + * Long BSON Type + * + * @classconstant BSON_DATA_LONG + **/ +BSON.BSON_DATA_LONG = 18; +/** + * Long BSON Type + * + * @classconstant BSON_DATA_DECIMAL128 + **/ +BSON.BSON_DATA_DECIMAL128 = 19; +/** + * MinKey BSON Type + * + * @classconstant BSON_DATA_MIN_KEY + **/ +BSON.BSON_DATA_MIN_KEY = 0xff; +/** + * MaxKey BSON Type + * + * @classconstant BSON_DATA_MAX_KEY + **/ +BSON.BSON_DATA_MAX_KEY = 0x7f; + +/** + * Binary Default Type + * + * @classconstant BSON_BINARY_SUBTYPE_DEFAULT + **/ +BSON.BSON_BINARY_SUBTYPE_DEFAULT = 0; +/** + * Binary Function Type + * + * @classconstant BSON_BINARY_SUBTYPE_FUNCTION + **/ +BSON.BSON_BINARY_SUBTYPE_FUNCTION = 1; +/** + * Binary Byte Array Type + * + * @classconstant BSON_BINARY_SUBTYPE_BYTE_ARRAY + **/ +BSON.BSON_BINARY_SUBTYPE_BYTE_ARRAY = 2; +/** + * Binary UUID Type + * + * @classconstant BSON_BINARY_SUBTYPE_UUID + **/ +BSON.BSON_BINARY_SUBTYPE_UUID = 3; +/** + * Binary MD5 Type + * + * @classconstant BSON_BINARY_SUBTYPE_MD5 + **/ +BSON.BSON_BINARY_SUBTYPE_MD5 = 4; +/** + * Binary User Defined Type + * + * @classconstant BSON_BINARY_SUBTYPE_USER_DEFINED + **/ +BSON.BSON_BINARY_SUBTYPE_USER_DEFINED = 128; + +// BSON MAX VALUES +BSON.BSON_INT32_MAX = 0x7fffffff; +BSON.BSON_INT32_MIN = -0x80000000; + +BSON.BSON_INT64_MAX = Math.pow(2, 63) - 1; +BSON.BSON_INT64_MIN = -Math.pow(2, 63); + +// JS MAX PRECISE VALUES +BSON.JS_INT_MAX = 0x20000000000000; // Any integer up to 2^53 can be precisely represented by a double. +BSON.JS_INT_MIN = -0x20000000000000; // Any integer down to -2^53 can be precisely represented by a double. + +// Internal long versions +var JS_INT_MAX_LONG = Long.fromNumber(0x20000000000000); // Any integer up to 2^53 can be precisely represented by a double. +var JS_INT_MIN_LONG = Long.fromNumber(-0x20000000000000); // Any integer down to -2^53 can be precisely represented by a double. + +module.exports = deserialize; diff --git a/node_modules/bson/lib/bson/parser/serializer.js b/node_modules/bson/lib/bson/parser/serializer.js new file mode 100644 index 0000000..6bb212e --- /dev/null +++ b/node_modules/bson/lib/bson/parser/serializer.js @@ -0,0 +1,1188 @@ +'use strict'; + +var writeIEEE754 = require('../float_parser').writeIEEE754, + Long = require('../long').Long, + Map = require('../map'), + Binary = require('../binary').Binary; + +var normalizedFunctionString = require('./utils').normalizedFunctionString; + +// try { +// var _Buffer = Uint8Array; +// } catch (e) { +// _Buffer = Buffer; +// } + +var regexp = /\x00/; // eslint-disable-line no-control-regex +var ignoreKeys = ['$db', '$ref', '$id', '$clusterTime']; + +// To ensure that 0.4 of node works correctly +var isDate = function isDate(d) { + return typeof d === 'object' && Object.prototype.toString.call(d) === '[object Date]'; +}; + +var isRegExp = function isRegExp(d) { + return Object.prototype.toString.call(d) === '[object RegExp]'; +}; + +var serializeString = function(buffer, key, value, index, isArray) { + // Encode String type + buffer[index++] = BSON.BSON_DATA_STRING; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes + 1; + buffer[index - 1] = 0; + // Write the string + var size = buffer.write(value, index + 4, 'utf8'); + // Write the size of the string to buffer + buffer[index + 3] = ((size + 1) >> 24) & 0xff; + buffer[index + 2] = ((size + 1) >> 16) & 0xff; + buffer[index + 1] = ((size + 1) >> 8) & 0xff; + buffer[index] = (size + 1) & 0xff; + // Update index + index = index + 4 + size; + // Write zero + buffer[index++] = 0; + return index; +}; + +var serializeNumber = function(buffer, key, value, index, isArray) { + // We have an integer value + if (Math.floor(value) === value && value >= BSON.JS_INT_MIN && value <= BSON.JS_INT_MAX) { + // If the value fits in 32 bits encode as int, if it fits in a double + // encode it as a double, otherwise long + if (value >= BSON.BSON_INT32_MIN && value <= BSON.BSON_INT32_MAX) { + // Set int type 32 bits or less + buffer[index++] = BSON.BSON_DATA_INT; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Write the int value + buffer[index++] = value & 0xff; + buffer[index++] = (value >> 8) & 0xff; + buffer[index++] = (value >> 16) & 0xff; + buffer[index++] = (value >> 24) & 0xff; + } else if (value >= BSON.JS_INT_MIN && value <= BSON.JS_INT_MAX) { + // Encode as double + buffer[index++] = BSON.BSON_DATA_NUMBER; + // Number of written bytes + numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Write float + writeIEEE754(buffer, value, index, 'little', 52, 8); + // Ajust index + index = index + 8; + } else { + // Set long type + buffer[index++] = BSON.BSON_DATA_LONG; + // Number of written bytes + numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + var longVal = Long.fromNumber(value); + var lowBits = longVal.getLowBits(); + var highBits = longVal.getHighBits(); + // Encode low bits + buffer[index++] = lowBits & 0xff; + buffer[index++] = (lowBits >> 8) & 0xff; + buffer[index++] = (lowBits >> 16) & 0xff; + buffer[index++] = (lowBits >> 24) & 0xff; + // Encode high bits + buffer[index++] = highBits & 0xff; + buffer[index++] = (highBits >> 8) & 0xff; + buffer[index++] = (highBits >> 16) & 0xff; + buffer[index++] = (highBits >> 24) & 0xff; + } + } else { + // Encode as double + buffer[index++] = BSON.BSON_DATA_NUMBER; + // Number of written bytes + numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Write float + writeIEEE754(buffer, value, index, 'little', 52, 8); + // Ajust index + index = index + 8; + } + + return index; +}; + +var serializeNull = function(buffer, key, value, index, isArray) { + // Set long type + buffer[index++] = BSON.BSON_DATA_NULL; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + return index; +}; + +var serializeBoolean = function(buffer, key, value, index, isArray) { + // Write the type + buffer[index++] = BSON.BSON_DATA_BOOLEAN; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Encode the boolean value + buffer[index++] = value ? 1 : 0; + return index; +}; + +var serializeDate = function(buffer, key, value, index, isArray) { + // Write the type + buffer[index++] = BSON.BSON_DATA_DATE; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + + // Write the date + var dateInMilis = Long.fromNumber(value.getTime()); + var lowBits = dateInMilis.getLowBits(); + var highBits = dateInMilis.getHighBits(); + // Encode low bits + buffer[index++] = lowBits & 0xff; + buffer[index++] = (lowBits >> 8) & 0xff; + buffer[index++] = (lowBits >> 16) & 0xff; + buffer[index++] = (lowBits >> 24) & 0xff; + // Encode high bits + buffer[index++] = highBits & 0xff; + buffer[index++] = (highBits >> 8) & 0xff; + buffer[index++] = (highBits >> 16) & 0xff; + buffer[index++] = (highBits >> 24) & 0xff; + return index; +}; + +var serializeRegExp = function(buffer, key, value, index, isArray) { + // Write the type + buffer[index++] = BSON.BSON_DATA_REGEXP; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + if (value.source && value.source.match(regexp) != null) { + throw Error('value ' + value.source + ' must not contain null bytes'); + } + // Adjust the index + index = index + buffer.write(value.source, index, 'utf8'); + // Write zero + buffer[index++] = 0x00; + // Write the parameters + if (value.global) buffer[index++] = 0x73; // s + if (value.ignoreCase) buffer[index++] = 0x69; // i + if (value.multiline) buffer[index++] = 0x6d; // m + // Add ending zero + buffer[index++] = 0x00; + return index; +}; + +var serializeBSONRegExp = function(buffer, key, value, index, isArray) { + // Write the type + buffer[index++] = BSON.BSON_DATA_REGEXP; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + + // Check the pattern for 0 bytes + if (value.pattern.match(regexp) != null) { + // The BSON spec doesn't allow keys with null bytes because keys are + // null-terminated. + throw Error('pattern ' + value.pattern + ' must not contain null bytes'); + } + + // Adjust the index + index = index + buffer.write(value.pattern, index, 'utf8'); + // Write zero + buffer[index++] = 0x00; + // Write the options + index = + index + + buffer.write( + value.options + .split('') + .sort() + .join(''), + index, + 'utf8' + ); + // Add ending zero + buffer[index++] = 0x00; + return index; +}; + +var serializeMinMax = function(buffer, key, value, index, isArray) { + // Write the type of either min or max key + if (value === null) { + buffer[index++] = BSON.BSON_DATA_NULL; + } else if (value._bsontype === 'MinKey') { + buffer[index++] = BSON.BSON_DATA_MIN_KEY; + } else { + buffer[index++] = BSON.BSON_DATA_MAX_KEY; + } + + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + return index; +}; + +var serializeObjectId = function(buffer, key, value, index, isArray) { + // Write the type + buffer[index++] = BSON.BSON_DATA_OID; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + + // Write the objectId into the shared buffer + if (typeof value.id === 'string') { + buffer.write(value.id, index, 'binary'); + } else if (value.id && value.id.copy) { + value.id.copy(buffer, index, 0, 12); + } else { + throw new Error('object [' + JSON.stringify(value) + '] is not a valid ObjectId'); + } + + // Ajust index + return index + 12; +}; + +var serializeBuffer = function(buffer, key, value, index, isArray) { + // Write the type + buffer[index++] = BSON.BSON_DATA_BINARY; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Get size of the buffer (current write point) + var size = value.length; + // Write the size of the string to buffer + buffer[index++] = size & 0xff; + buffer[index++] = (size >> 8) & 0xff; + buffer[index++] = (size >> 16) & 0xff; + buffer[index++] = (size >> 24) & 0xff; + // Write the default subtype + buffer[index++] = BSON.BSON_BINARY_SUBTYPE_DEFAULT; + // Copy the content form the binary field to the buffer + value.copy(buffer, index, 0, size); + // Adjust the index + index = index + size; + return index; +}; + +var serializeObject = function( + buffer, + key, + value, + index, + checkKeys, + depth, + serializeFunctions, + ignoreUndefined, + isArray, + path +) { + for (var i = 0; i < path.length; i++) { + if (path[i] === value) throw new Error('cyclic dependency detected'); + } + + // Push value to stack + path.push(value); + // Write the type + buffer[index++] = Array.isArray(value) ? BSON.BSON_DATA_ARRAY : BSON.BSON_DATA_OBJECT; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + var endIndex = serializeInto( + buffer, + value, + checkKeys, + index, + depth + 1, + serializeFunctions, + ignoreUndefined, + path + ); + // Pop stack + path.pop(); + // Write size + return endIndex; +}; + +var serializeDecimal128 = function(buffer, key, value, index, isArray) { + buffer[index++] = BSON.BSON_DATA_DECIMAL128; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Write the data from the value + value.bytes.copy(buffer, index, 0, 16); + return index + 16; +}; + +var serializeLong = function(buffer, key, value, index, isArray) { + // Write the type + buffer[index++] = value._bsontype === 'Long' ? BSON.BSON_DATA_LONG : BSON.BSON_DATA_TIMESTAMP; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Write the date + var lowBits = value.getLowBits(); + var highBits = value.getHighBits(); + // Encode low bits + buffer[index++] = lowBits & 0xff; + buffer[index++] = (lowBits >> 8) & 0xff; + buffer[index++] = (lowBits >> 16) & 0xff; + buffer[index++] = (lowBits >> 24) & 0xff; + // Encode high bits + buffer[index++] = highBits & 0xff; + buffer[index++] = (highBits >> 8) & 0xff; + buffer[index++] = (highBits >> 16) & 0xff; + buffer[index++] = (highBits >> 24) & 0xff; + return index; +}; + +var serializeInt32 = function(buffer, key, value, index, isArray) { + // Set int type 32 bits or less + buffer[index++] = BSON.BSON_DATA_INT; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Write the int value + buffer[index++] = value & 0xff; + buffer[index++] = (value >> 8) & 0xff; + buffer[index++] = (value >> 16) & 0xff; + buffer[index++] = (value >> 24) & 0xff; + return index; +}; + +var serializeDouble = function(buffer, key, value, index, isArray) { + // Encode as double + buffer[index++] = BSON.BSON_DATA_NUMBER; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Write float + writeIEEE754(buffer, value, index, 'little', 52, 8); + // Ajust index + index = index + 8; + return index; +}; + +var serializeFunction = function(buffer, key, value, index, checkKeys, depth, isArray) { + buffer[index++] = BSON.BSON_DATA_CODE; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Function string + var functionString = normalizedFunctionString(value); + + // Write the string + var size = buffer.write(functionString, index + 4, 'utf8') + 1; + // Write the size of the string to buffer + buffer[index] = size & 0xff; + buffer[index + 1] = (size >> 8) & 0xff; + buffer[index + 2] = (size >> 16) & 0xff; + buffer[index + 3] = (size >> 24) & 0xff; + // Update index + index = index + 4 + size - 1; + // Write zero + buffer[index++] = 0; + return index; +}; + +var serializeCode = function( + buffer, + key, + value, + index, + checkKeys, + depth, + serializeFunctions, + ignoreUndefined, + isArray +) { + if (value.scope && typeof value.scope === 'object') { + // Write the type + buffer[index++] = BSON.BSON_DATA_CODE_W_SCOPE; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + + // Starting index + var startIndex = index; + + // Serialize the function + // Get the function string + var functionString = typeof value.code === 'string' ? value.code : value.code.toString(); + // Index adjustment + index = index + 4; + // Write string into buffer + var codeSize = buffer.write(functionString, index + 4, 'utf8') + 1; + // Write the size of the string to buffer + buffer[index] = codeSize & 0xff; + buffer[index + 1] = (codeSize >> 8) & 0xff; + buffer[index + 2] = (codeSize >> 16) & 0xff; + buffer[index + 3] = (codeSize >> 24) & 0xff; + // Write end 0 + buffer[index + 4 + codeSize - 1] = 0; + // Write the + index = index + codeSize + 4; + + // + // Serialize the scope value + var endIndex = serializeInto( + buffer, + value.scope, + checkKeys, + index, + depth + 1, + serializeFunctions, + ignoreUndefined + ); + index = endIndex - 1; + + // Writ the total + var totalSize = endIndex - startIndex; + + // Write the total size of the object + buffer[startIndex++] = totalSize & 0xff; + buffer[startIndex++] = (totalSize >> 8) & 0xff; + buffer[startIndex++] = (totalSize >> 16) & 0xff; + buffer[startIndex++] = (totalSize >> 24) & 0xff; + // Write trailing zero + buffer[index++] = 0; + } else { + buffer[index++] = BSON.BSON_DATA_CODE; + // Number of written bytes + numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Function string + functionString = value.code.toString(); + // Write the string + var size = buffer.write(functionString, index + 4, 'utf8') + 1; + // Write the size of the string to buffer + buffer[index] = size & 0xff; + buffer[index + 1] = (size >> 8) & 0xff; + buffer[index + 2] = (size >> 16) & 0xff; + buffer[index + 3] = (size >> 24) & 0xff; + // Update index + index = index + 4 + size - 1; + // Write zero + buffer[index++] = 0; + } + + return index; +}; + +var serializeBinary = function(buffer, key, value, index, isArray) { + // Write the type + buffer[index++] = BSON.BSON_DATA_BINARY; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Extract the buffer + var data = value.value(true); + // Calculate size + var size = value.position; + // Add the deprecated 02 type 4 bytes of size to total + if (value.sub_type === Binary.SUBTYPE_BYTE_ARRAY) size = size + 4; + // Write the size of the string to buffer + buffer[index++] = size & 0xff; + buffer[index++] = (size >> 8) & 0xff; + buffer[index++] = (size >> 16) & 0xff; + buffer[index++] = (size >> 24) & 0xff; + // Write the subtype to the buffer + buffer[index++] = value.sub_type; + + // If we have binary type 2 the 4 first bytes are the size + if (value.sub_type === Binary.SUBTYPE_BYTE_ARRAY) { + size = size - 4; + buffer[index++] = size & 0xff; + buffer[index++] = (size >> 8) & 0xff; + buffer[index++] = (size >> 16) & 0xff; + buffer[index++] = (size >> 24) & 0xff; + } + + // Write the data to the object + data.copy(buffer, index, 0, value.position); + // Adjust the index + index = index + value.position; + return index; +}; + +var serializeSymbol = function(buffer, key, value, index, isArray) { + // Write the type + buffer[index++] = BSON.BSON_DATA_SYMBOL; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + // Write the string + var size = buffer.write(value.value, index + 4, 'utf8') + 1; + // Write the size of the string to buffer + buffer[index] = size & 0xff; + buffer[index + 1] = (size >> 8) & 0xff; + buffer[index + 2] = (size >> 16) & 0xff; + buffer[index + 3] = (size >> 24) & 0xff; + // Update index + index = index + 4 + size - 1; + // Write zero + buffer[index++] = 0x00; + return index; +}; + +var serializeDBRef = function(buffer, key, value, index, depth, serializeFunctions, isArray) { + // Write the type + buffer[index++] = BSON.BSON_DATA_OBJECT; + // Number of written bytes + var numberOfWrittenBytes = !isArray + ? buffer.write(key, index, 'utf8') + : buffer.write(key, index, 'ascii'); + + // Encode the name + index = index + numberOfWrittenBytes; + buffer[index++] = 0; + + var startIndex = index; + var endIndex; + + // Serialize object + if (null != value.db) { + endIndex = serializeInto( + buffer, + { + $ref: value.namespace, + $id: value.oid, + $db: value.db + }, + false, + index, + depth + 1, + serializeFunctions + ); + } else { + endIndex = serializeInto( + buffer, + { + $ref: value.namespace, + $id: value.oid + }, + false, + index, + depth + 1, + serializeFunctions + ); + } + + // Calculate object size + var size = endIndex - startIndex; + // Write the size + buffer[startIndex++] = size & 0xff; + buffer[startIndex++] = (size >> 8) & 0xff; + buffer[startIndex++] = (size >> 16) & 0xff; + buffer[startIndex++] = (size >> 24) & 0xff; + // Set index + return endIndex; +}; + +var serializeInto = function serializeInto( + buffer, + object, + checkKeys, + startingIndex, + depth, + serializeFunctions, + ignoreUndefined, + path +) { + startingIndex = startingIndex || 0; + path = path || []; + + // Push the object to the path + path.push(object); + + // Start place to serialize into + var index = startingIndex + 4; + // var self = this; + + // Special case isArray + if (Array.isArray(object)) { + // Get object keys + for (var i = 0; i < object.length; i++) { + var key = '' + i; + var value = object[i]; + + // Is there an override value + if (value && value.toBSON) { + if (typeof value.toBSON !== 'function') throw new Error('toBSON is not a function'); + value = value.toBSON(); + } + + var type = typeof value; + if (type === 'string') { + index = serializeString(buffer, key, value, index, true); + } else if (type === 'number') { + index = serializeNumber(buffer, key, value, index, true); + } else if (type === 'boolean') { + index = serializeBoolean(buffer, key, value, index, true); + } else if (value instanceof Date || isDate(value)) { + index = serializeDate(buffer, key, value, index, true); + } else if (value === undefined) { + index = serializeNull(buffer, key, value, index, true); + } else if (value === null) { + index = serializeNull(buffer, key, value, index, true); + } else if (value['_bsontype'] === 'ObjectID' || value['_bsontype'] === 'ObjectId') { + index = serializeObjectId(buffer, key, value, index, true); + } else if (Buffer.isBuffer(value)) { + index = serializeBuffer(buffer, key, value, index, true); + } else if (value instanceof RegExp || isRegExp(value)) { + index = serializeRegExp(buffer, key, value, index, true); + } else if (type === 'object' && value['_bsontype'] == null) { + index = serializeObject( + buffer, + key, + value, + index, + checkKeys, + depth, + serializeFunctions, + ignoreUndefined, + true, + path + ); + } else if (type === 'object' && value['_bsontype'] === 'Decimal128') { + index = serializeDecimal128(buffer, key, value, index, true); + } else if (value['_bsontype'] === 'Long' || value['_bsontype'] === 'Timestamp') { + index = serializeLong(buffer, key, value, index, true); + } else if (value['_bsontype'] === 'Double') { + index = serializeDouble(buffer, key, value, index, true); + } else if (typeof value === 'function' && serializeFunctions) { + index = serializeFunction( + buffer, + key, + value, + index, + checkKeys, + depth, + serializeFunctions, + true + ); + } else if (value['_bsontype'] === 'Code') { + index = serializeCode( + buffer, + key, + value, + index, + checkKeys, + depth, + serializeFunctions, + ignoreUndefined, + true + ); + } else if (value['_bsontype'] === 'Binary') { + index = serializeBinary(buffer, key, value, index, true); + } else if (value['_bsontype'] === 'Symbol') { + index = serializeSymbol(buffer, key, value, index, true); + } else if (value['_bsontype'] === 'DBRef') { + index = serializeDBRef(buffer, key, value, index, depth, serializeFunctions, true); + } else if (value['_bsontype'] === 'BSONRegExp') { + index = serializeBSONRegExp(buffer, key, value, index, true); + } else if (value['_bsontype'] === 'Int32') { + index = serializeInt32(buffer, key, value, index, true); + } else if (value['_bsontype'] === 'MinKey' || value['_bsontype'] === 'MaxKey') { + index = serializeMinMax(buffer, key, value, index, true); + } else if (typeof value['_bsontype'] !== 'undefined') { + throw new TypeError('Unrecognized or invalid _bsontype: ' + value['_bsontype']); + } + } + } else if (object instanceof Map) { + var iterator = object.entries(); + var done = false; + + while (!done) { + // Unpack the next entry + var entry = iterator.next(); + done = entry.done; + // Are we done, then skip and terminate + if (done) continue; + + // Get the entry values + key = entry.value[0]; + value = entry.value[1]; + + // Check the type of the value + type = typeof value; + + // Check the key and throw error if it's illegal + if (typeof key === 'string' && ignoreKeys.indexOf(key) === -1) { + if (key.match(regexp) != null) { + // The BSON spec doesn't allow keys with null bytes because keys are + // null-terminated. + throw Error('key ' + key + ' must not contain null bytes'); + } + + if (checkKeys) { + if ('$' === key[0]) { + throw Error('key ' + key + " must not start with '$'"); + } else if (~key.indexOf('.')) { + throw Error('key ' + key + " must not contain '.'"); + } + } + } + + if (type === 'string') { + index = serializeString(buffer, key, value, index); + } else if (type === 'number') { + index = serializeNumber(buffer, key, value, index); + } else if (type === 'boolean') { + index = serializeBoolean(buffer, key, value, index); + } else if (value instanceof Date || isDate(value)) { + index = serializeDate(buffer, key, value, index); + // } else if (value === undefined && ignoreUndefined === true) { + } else if (value === null || (value === undefined && ignoreUndefined === false)) { + index = serializeNull(buffer, key, value, index); + } else if (value['_bsontype'] === 'ObjectID' || value['_bsontype'] === 'ObjectId') { + index = serializeObjectId(buffer, key, value, index); + } else if (Buffer.isBuffer(value)) { + index = serializeBuffer(buffer, key, value, index); + } else if (value instanceof RegExp || isRegExp(value)) { + index = serializeRegExp(buffer, key, value, index); + } else if (type === 'object' && value['_bsontype'] == null) { + index = serializeObject( + buffer, + key, + value, + index, + checkKeys, + depth, + serializeFunctions, + ignoreUndefined, + false, + path + ); + } else if (type === 'object' && value['_bsontype'] === 'Decimal128') { + index = serializeDecimal128(buffer, key, value, index); + } else if (value['_bsontype'] === 'Long' || value['_bsontype'] === 'Timestamp') { + index = serializeLong(buffer, key, value, index); + } else if (value['_bsontype'] === 'Double') { + index = serializeDouble(buffer, key, value, index); + } else if (value['_bsontype'] === 'Code') { + index = serializeCode( + buffer, + key, + value, + index, + checkKeys, + depth, + serializeFunctions, + ignoreUndefined + ); + } else if (typeof value === 'function' && serializeFunctions) { + index = serializeFunction(buffer, key, value, index, checkKeys, depth, serializeFunctions); + } else if (value['_bsontype'] === 'Binary') { + index = serializeBinary(buffer, key, value, index); + } else if (value['_bsontype'] === 'Symbol') { + index = serializeSymbol(buffer, key, value, index); + } else if (value['_bsontype'] === 'DBRef') { + index = serializeDBRef(buffer, key, value, index, depth, serializeFunctions); + } else if (value['_bsontype'] === 'BSONRegExp') { + index = serializeBSONRegExp(buffer, key, value, index); + } else if (value['_bsontype'] === 'Int32') { + index = serializeInt32(buffer, key, value, index); + } else if (value['_bsontype'] === 'MinKey' || value['_bsontype'] === 'MaxKey') { + index = serializeMinMax(buffer, key, value, index); + } else if (typeof value['_bsontype'] !== 'undefined') { + throw new TypeError('Unrecognized or invalid _bsontype: ' + value['_bsontype']); + } + } + } else { + // Did we provide a custom serialization method + if (object.toBSON) { + if (typeof object.toBSON !== 'function') throw new Error('toBSON is not a function'); + object = object.toBSON(); + if (object != null && typeof object !== 'object') + throw new Error('toBSON function did not return an object'); + } + + // Iterate over all the keys + for (key in object) { + value = object[key]; + // Is there an override value + if (value && value.toBSON) { + if (typeof value.toBSON !== 'function') throw new Error('toBSON is not a function'); + value = value.toBSON(); + } + + // Check the type of the value + type = typeof value; + + // Check the key and throw error if it's illegal + if (typeof key === 'string' && ignoreKeys.indexOf(key) === -1) { + if (key.match(regexp) != null) { + // The BSON spec doesn't allow keys with null bytes because keys are + // null-terminated. + throw Error('key ' + key + ' must not contain null bytes'); + } + + if (checkKeys) { + if ('$' === key[0]) { + throw Error('key ' + key + " must not start with '$'"); + } else if (~key.indexOf('.')) { + throw Error('key ' + key + " must not contain '.'"); + } + } + } + + if (type === 'string') { + index = serializeString(buffer, key, value, index); + } else if (type === 'number') { + index = serializeNumber(buffer, key, value, index); + } else if (type === 'boolean') { + index = serializeBoolean(buffer, key, value, index); + } else if (value instanceof Date || isDate(value)) { + index = serializeDate(buffer, key, value, index); + } else if (value === undefined) { + if (ignoreUndefined === false) index = serializeNull(buffer, key, value, index); + } else if (value === null) { + index = serializeNull(buffer, key, value, index); + } else if (value['_bsontype'] === 'ObjectID' || value['_bsontype'] === 'ObjectId') { + index = serializeObjectId(buffer, key, value, index); + } else if (Buffer.isBuffer(value)) { + index = serializeBuffer(buffer, key, value, index); + } else if (value instanceof RegExp || isRegExp(value)) { + index = serializeRegExp(buffer, key, value, index); + } else if (type === 'object' && value['_bsontype'] == null) { + index = serializeObject( + buffer, + key, + value, + index, + checkKeys, + depth, + serializeFunctions, + ignoreUndefined, + false, + path + ); + } else if (type === 'object' && value['_bsontype'] === 'Decimal128') { + index = serializeDecimal128(buffer, key, value, index); + } else if (value['_bsontype'] === 'Long' || value['_bsontype'] === 'Timestamp') { + index = serializeLong(buffer, key, value, index); + } else if (value['_bsontype'] === 'Double') { + index = serializeDouble(buffer, key, value, index); + } else if (value['_bsontype'] === 'Code') { + index = serializeCode( + buffer, + key, + value, + index, + checkKeys, + depth, + serializeFunctions, + ignoreUndefined + ); + } else if (typeof value === 'function' && serializeFunctions) { + index = serializeFunction(buffer, key, value, index, checkKeys, depth, serializeFunctions); + } else if (value['_bsontype'] === 'Binary') { + index = serializeBinary(buffer, key, value, index); + } else if (value['_bsontype'] === 'Symbol') { + index = serializeSymbol(buffer, key, value, index); + } else if (value['_bsontype'] === 'DBRef') { + index = serializeDBRef(buffer, key, value, index, depth, serializeFunctions); + } else if (value['_bsontype'] === 'BSONRegExp') { + index = serializeBSONRegExp(buffer, key, value, index); + } else if (value['_bsontype'] === 'Int32') { + index = serializeInt32(buffer, key, value, index); + } else if (value['_bsontype'] === 'MinKey' || value['_bsontype'] === 'MaxKey') { + index = serializeMinMax(buffer, key, value, index); + } else if (typeof value['_bsontype'] !== 'undefined') { + throw new TypeError('Unrecognized or invalid _bsontype: ' + value['_bsontype']); + } + } + } + + // Remove the path + path.pop(); + + // Final padding byte for object + buffer[index++] = 0x00; + + // Final size + var size = index - startingIndex; + // Write the size of the object + buffer[startingIndex++] = size & 0xff; + buffer[startingIndex++] = (size >> 8) & 0xff; + buffer[startingIndex++] = (size >> 16) & 0xff; + buffer[startingIndex++] = (size >> 24) & 0xff; + return index; +}; + +var BSON = {}; + +/** + * Contains the function cache if we have that enable to allow for avoiding the eval step on each deserialization, comparison is by md5 + * + * @ignore + * @api private + */ +// var functionCache = (BSON.functionCache = {}); + +/** + * Number BSON Type + * + * @classconstant BSON_DATA_NUMBER + **/ +BSON.BSON_DATA_NUMBER = 1; +/** + * String BSON Type + * + * @classconstant BSON_DATA_STRING + **/ +BSON.BSON_DATA_STRING = 2; +/** + * Object BSON Type + * + * @classconstant BSON_DATA_OBJECT + **/ +BSON.BSON_DATA_OBJECT = 3; +/** + * Array BSON Type + * + * @classconstant BSON_DATA_ARRAY + **/ +BSON.BSON_DATA_ARRAY = 4; +/** + * Binary BSON Type + * + * @classconstant BSON_DATA_BINARY + **/ +BSON.BSON_DATA_BINARY = 5; +/** + * ObjectID BSON Type, deprecated + * + * @classconstant BSON_DATA_UNDEFINED + **/ +BSON.BSON_DATA_UNDEFINED = 6; +/** + * ObjectID BSON Type + * + * @classconstant BSON_DATA_OID + **/ +BSON.BSON_DATA_OID = 7; +/** + * Boolean BSON Type + * + * @classconstant BSON_DATA_BOOLEAN + **/ +BSON.BSON_DATA_BOOLEAN = 8; +/** + * Date BSON Type + * + * @classconstant BSON_DATA_DATE + **/ +BSON.BSON_DATA_DATE = 9; +/** + * null BSON Type + * + * @classconstant BSON_DATA_NULL + **/ +BSON.BSON_DATA_NULL = 10; +/** + * RegExp BSON Type + * + * @classconstant BSON_DATA_REGEXP + **/ +BSON.BSON_DATA_REGEXP = 11; +/** + * Code BSON Type + * + * @classconstant BSON_DATA_CODE + **/ +BSON.BSON_DATA_CODE = 13; +/** + * Symbol BSON Type + * + * @classconstant BSON_DATA_SYMBOL + **/ +BSON.BSON_DATA_SYMBOL = 14; +/** + * Code with Scope BSON Type + * + * @classconstant BSON_DATA_CODE_W_SCOPE + **/ +BSON.BSON_DATA_CODE_W_SCOPE = 15; +/** + * 32 bit Integer BSON Type + * + * @classconstant BSON_DATA_INT + **/ +BSON.BSON_DATA_INT = 16; +/** + * Timestamp BSON Type + * + * @classconstant BSON_DATA_TIMESTAMP + **/ +BSON.BSON_DATA_TIMESTAMP = 17; +/** + * Long BSON Type + * + * @classconstant BSON_DATA_LONG + **/ +BSON.BSON_DATA_LONG = 18; +/** + * Long BSON Type + * + * @classconstant BSON_DATA_DECIMAL128 + **/ +BSON.BSON_DATA_DECIMAL128 = 19; +/** + * MinKey BSON Type + * + * @classconstant BSON_DATA_MIN_KEY + **/ +BSON.BSON_DATA_MIN_KEY = 0xff; +/** + * MaxKey BSON Type + * + * @classconstant BSON_DATA_MAX_KEY + **/ +BSON.BSON_DATA_MAX_KEY = 0x7f; +/** + * Binary Default Type + * + * @classconstant BSON_BINARY_SUBTYPE_DEFAULT + **/ +BSON.BSON_BINARY_SUBTYPE_DEFAULT = 0; +/** + * Binary Function Type + * + * @classconstant BSON_BINARY_SUBTYPE_FUNCTION + **/ +BSON.BSON_BINARY_SUBTYPE_FUNCTION = 1; +/** + * Binary Byte Array Type + * + * @classconstant BSON_BINARY_SUBTYPE_BYTE_ARRAY + **/ +BSON.BSON_BINARY_SUBTYPE_BYTE_ARRAY = 2; +/** + * Binary UUID Type + * + * @classconstant BSON_BINARY_SUBTYPE_UUID + **/ +BSON.BSON_BINARY_SUBTYPE_UUID = 3; +/** + * Binary MD5 Type + * + * @classconstant BSON_BINARY_SUBTYPE_MD5 + **/ +BSON.BSON_BINARY_SUBTYPE_MD5 = 4; +/** + * Binary User Defined Type + * + * @classconstant BSON_BINARY_SUBTYPE_USER_DEFINED + **/ +BSON.BSON_BINARY_SUBTYPE_USER_DEFINED = 128; + +// BSON MAX VALUES +BSON.BSON_INT32_MAX = 0x7fffffff; +BSON.BSON_INT32_MIN = -0x80000000; + +BSON.BSON_INT64_MAX = Math.pow(2, 63) - 1; +BSON.BSON_INT64_MIN = -Math.pow(2, 63); + +// JS MAX PRECISE VALUES +BSON.JS_INT_MAX = 0x20000000000000; // Any integer up to 2^53 can be precisely represented by a double. +BSON.JS_INT_MIN = -0x20000000000000; // Any integer down to -2^53 can be precisely represented by a double. + +// Internal long versions +// var JS_INT_MAX_LONG = Long.fromNumber(0x20000000000000); // Any integer up to 2^53 can be precisely represented by a double. +// var JS_INT_MIN_LONG = Long.fromNumber(-0x20000000000000); // Any integer down to -2^53 can be precisely represented by a double. + +module.exports = serializeInto; diff --git a/node_modules/bson/lib/bson/parser/utils.js b/node_modules/bson/lib/bson/parser/utils.js new file mode 100644 index 0000000..6faa439 --- /dev/null +++ b/node_modules/bson/lib/bson/parser/utils.js @@ -0,0 +1,28 @@ +'use strict'; + +/** + * Normalizes our expected stringified form of a function across versions of node + * @param {Function} fn The function to stringify + */ +function normalizedFunctionString(fn) { + return fn.toString().replace(/function *\(/, 'function ('); +} + +function newBuffer(item, encoding) { + return new Buffer(item, encoding); +} + +function allocBuffer() { + return Buffer.alloc.apply(Buffer, arguments); +} + +function toBuffer() { + return Buffer.from.apply(Buffer, arguments); +} + +module.exports = { + normalizedFunctionString: normalizedFunctionString, + allocBuffer: typeof Buffer.alloc === 'function' ? allocBuffer : newBuffer, + toBuffer: typeof Buffer.from === 'function' ? toBuffer : newBuffer +}; + diff --git a/node_modules/bson/lib/bson/regexp.js b/node_modules/bson/lib/bson/regexp.js new file mode 100644 index 0000000..108f016 --- /dev/null +++ b/node_modules/bson/lib/bson/regexp.js @@ -0,0 +1,33 @@ +/** + * A class representation of the BSON RegExp type. + * + * @class + * @return {BSONRegExp} A MinKey instance + */ +function BSONRegExp(pattern, options) { + if (!(this instanceof BSONRegExp)) return new BSONRegExp(); + + // Execute + this._bsontype = 'BSONRegExp'; + this.pattern = pattern || ''; + this.options = options || ''; + + // Validate options + for (var i = 0; i < this.options.length; i++) { + if ( + !( + this.options[i] === 'i' || + this.options[i] === 'm' || + this.options[i] === 'x' || + this.options[i] === 'l' || + this.options[i] === 's' || + this.options[i] === 'u' + ) + ) { + throw new Error('the regular expression options [' + this.options[i] + '] is not supported'); + } + } +} + +module.exports = BSONRegExp; +module.exports.BSONRegExp = BSONRegExp; diff --git a/node_modules/bson/lib/bson/symbol.js b/node_modules/bson/lib/bson/symbol.js new file mode 100644 index 0000000..ba20cab --- /dev/null +++ b/node_modules/bson/lib/bson/symbol.js @@ -0,0 +1,50 @@ +// Custom inspect property name / symbol. +var inspect = Buffer ? require('util').inspect.custom || 'inspect' : 'inspect'; + +/** + * A class representation of the BSON Symbol type. + * + * @class + * @deprecated + * @param {string} value the string representing the symbol. + * @return {Symbol} + */ +function Symbol(value) { + if (!(this instanceof Symbol)) return new Symbol(value); + this._bsontype = 'Symbol'; + this.value = value; +} + +/** + * Access the wrapped string value. + * + * @method + * @return {String} returns the wrapped string. + */ +Symbol.prototype.valueOf = function() { + return this.value; +}; + +/** + * @ignore + */ +Symbol.prototype.toString = function() { + return this.value; +}; + +/** + * @ignore + */ +Symbol.prototype[inspect] = function() { + return this.value; +}; + +/** + * @ignore + */ +Symbol.prototype.toJSON = function() { + return this.value; +}; + +module.exports = Symbol; +module.exports.Symbol = Symbol; diff --git a/node_modules/bson/lib/bson/timestamp.js b/node_modules/bson/lib/bson/timestamp.js new file mode 100644 index 0000000..dc61a6c --- /dev/null +++ b/node_modules/bson/lib/bson/timestamp.js @@ -0,0 +1,854 @@ +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +// +// Copyright 2009 Google Inc. All Rights Reserved + +/** + * This type is for INTERNAL use in MongoDB only and should not be used in applications. + * The appropriate corresponding type is the JavaScript Date type. + * + * Defines a Timestamp class for representing a 64-bit two's-complement + * integer value, which faithfully simulates the behavior of a Java "Timestamp". This + * implementation is derived from TimestampLib in GWT. + * + * Constructs a 64-bit two's-complement integer, given its low and high 32-bit + * values as *signed* integers. See the from* functions below for more + * convenient ways of constructing Timestamps. + * + * The internal representation of a Timestamp is the two given signed, 32-bit values. + * We use 32-bit pieces because these are the size of integers on which + * Javascript performs bit-operations. For operations like addition and + * multiplication, we split each number into 16-bit pieces, which can easily be + * multiplied within Javascript's floating-point representation without overflow + * or change in sign. + * + * In the algorithms below, we frequently reduce the negative case to the + * positive case by negating the input(s) and then post-processing the result. + * Note that we must ALWAYS check specially whether those values are MIN_VALUE + * (-2^63) because -MIN_VALUE == MIN_VALUE (since 2^63 cannot be represented as + * a positive number, it overflows back into a negative). Not handling this + * case would often result in infinite recursion. + * + * @class + * @param {number} low the low (signed) 32 bits of the Timestamp. + * @param {number} high the high (signed) 32 bits of the Timestamp. + */ +function Timestamp(low, high) { + if (!(this instanceof Timestamp)) return new Timestamp(low, high); + this._bsontype = 'Timestamp'; + /** + * @type {number} + * @ignore + */ + this.low_ = low | 0; // force into 32 signed bits. + + /** + * @type {number} + * @ignore + */ + this.high_ = high | 0; // force into 32 signed bits. +} + +/** + * Return the int value. + * + * @return {number} the value, assuming it is a 32-bit integer. + */ +Timestamp.prototype.toInt = function() { + return this.low_; +}; + +/** + * Return the Number value. + * + * @method + * @return {number} the closest floating-point representation to this value. + */ +Timestamp.prototype.toNumber = function() { + return this.high_ * Timestamp.TWO_PWR_32_DBL_ + this.getLowBitsUnsigned(); +}; + +/** + * Return the JSON value. + * + * @method + * @return {string} the JSON representation. + */ +Timestamp.prototype.toJSON = function() { + return this.toString(); +}; + +/** + * Return the String value. + * + * @method + * @param {number} [opt_radix] the radix in which the text should be written. + * @return {string} the textual representation of this value. + */ +Timestamp.prototype.toString = function(opt_radix) { + var radix = opt_radix || 10; + if (radix < 2 || 36 < radix) { + throw Error('radix out of range: ' + radix); + } + + if (this.isZero()) { + return '0'; + } + + if (this.isNegative()) { + if (this.equals(Timestamp.MIN_VALUE)) { + // We need to change the Timestamp value before it can be negated, so we remove + // the bottom-most digit in this base and then recurse to do the rest. + var radixTimestamp = Timestamp.fromNumber(radix); + var div = this.div(radixTimestamp); + var rem = div.multiply(radixTimestamp).subtract(this); + return div.toString(radix) + rem.toInt().toString(radix); + } else { + return '-' + this.negate().toString(radix); + } + } + + // Do several (6) digits each time through the loop, so as to + // minimize the calls to the very expensive emulated div. + var radixToPower = Timestamp.fromNumber(Math.pow(radix, 6)); + + rem = this; + var result = ''; + + while (!rem.isZero()) { + var remDiv = rem.div(radixToPower); + var intval = rem.subtract(remDiv.multiply(radixToPower)).toInt(); + var digits = intval.toString(radix); + + rem = remDiv; + if (rem.isZero()) { + return digits + result; + } else { + while (digits.length < 6) { + digits = '0' + digits; + } + result = '' + digits + result; + } + } +}; + +/** + * Return the high 32-bits value. + * + * @method + * @return {number} the high 32-bits as a signed value. + */ +Timestamp.prototype.getHighBits = function() { + return this.high_; +}; + +/** + * Return the low 32-bits value. + * + * @method + * @return {number} the low 32-bits as a signed value. + */ +Timestamp.prototype.getLowBits = function() { + return this.low_; +}; + +/** + * Return the low unsigned 32-bits value. + * + * @method + * @return {number} the low 32-bits as an unsigned value. + */ +Timestamp.prototype.getLowBitsUnsigned = function() { + return this.low_ >= 0 ? this.low_ : Timestamp.TWO_PWR_32_DBL_ + this.low_; +}; + +/** + * Returns the number of bits needed to represent the absolute value of this Timestamp. + * + * @method + * @return {number} Returns the number of bits needed to represent the absolute value of this Timestamp. + */ +Timestamp.prototype.getNumBitsAbs = function() { + if (this.isNegative()) { + if (this.equals(Timestamp.MIN_VALUE)) { + return 64; + } else { + return this.negate().getNumBitsAbs(); + } + } else { + var val = this.high_ !== 0 ? this.high_ : this.low_; + for (var bit = 31; bit > 0; bit--) { + if ((val & (1 << bit)) !== 0) { + break; + } + } + return this.high_ !== 0 ? bit + 33 : bit + 1; + } +}; + +/** + * Return whether this value is zero. + * + * @method + * @return {boolean} whether this value is zero. + */ +Timestamp.prototype.isZero = function() { + return this.high_ === 0 && this.low_ === 0; +}; + +/** + * Return whether this value is negative. + * + * @method + * @return {boolean} whether this value is negative. + */ +Timestamp.prototype.isNegative = function() { + return this.high_ < 0; +}; + +/** + * Return whether this value is odd. + * + * @method + * @return {boolean} whether this value is odd. + */ +Timestamp.prototype.isOdd = function() { + return (this.low_ & 1) === 1; +}; + +/** + * Return whether this Timestamp equals the other + * + * @method + * @param {Timestamp} other Timestamp to compare against. + * @return {boolean} whether this Timestamp equals the other + */ +Timestamp.prototype.equals = function(other) { + return this.high_ === other.high_ && this.low_ === other.low_; +}; + +/** + * Return whether this Timestamp does not equal the other. + * + * @method + * @param {Timestamp} other Timestamp to compare against. + * @return {boolean} whether this Timestamp does not equal the other. + */ +Timestamp.prototype.notEquals = function(other) { + return this.high_ !== other.high_ || this.low_ !== other.low_; +}; + +/** + * Return whether this Timestamp is less than the other. + * + * @method + * @param {Timestamp} other Timestamp to compare against. + * @return {boolean} whether this Timestamp is less than the other. + */ +Timestamp.prototype.lessThan = function(other) { + return this.compare(other) < 0; +}; + +/** + * Return whether this Timestamp is less than or equal to the other. + * + * @method + * @param {Timestamp} other Timestamp to compare against. + * @return {boolean} whether this Timestamp is less than or equal to the other. + */ +Timestamp.prototype.lessThanOrEqual = function(other) { + return this.compare(other) <= 0; +}; + +/** + * Return whether this Timestamp is greater than the other. + * + * @method + * @param {Timestamp} other Timestamp to compare against. + * @return {boolean} whether this Timestamp is greater than the other. + */ +Timestamp.prototype.greaterThan = function(other) { + return this.compare(other) > 0; +}; + +/** + * Return whether this Timestamp is greater than or equal to the other. + * + * @method + * @param {Timestamp} other Timestamp to compare against. + * @return {boolean} whether this Timestamp is greater than or equal to the other. + */ +Timestamp.prototype.greaterThanOrEqual = function(other) { + return this.compare(other) >= 0; +}; + +/** + * Compares this Timestamp with the given one. + * + * @method + * @param {Timestamp} other Timestamp to compare against. + * @return {boolean} 0 if they are the same, 1 if the this is greater, and -1 if the given one is greater. + */ +Timestamp.prototype.compare = function(other) { + if (this.equals(other)) { + return 0; + } + + var thisNeg = this.isNegative(); + var otherNeg = other.isNegative(); + if (thisNeg && !otherNeg) { + return -1; + } + if (!thisNeg && otherNeg) { + return 1; + } + + // at this point, the signs are the same, so subtraction will not overflow + if (this.subtract(other).isNegative()) { + return -1; + } else { + return 1; + } +}; + +/** + * The negation of this value. + * + * @method + * @return {Timestamp} the negation of this value. + */ +Timestamp.prototype.negate = function() { + if (this.equals(Timestamp.MIN_VALUE)) { + return Timestamp.MIN_VALUE; + } else { + return this.not().add(Timestamp.ONE); + } +}; + +/** + * Returns the sum of this and the given Timestamp. + * + * @method + * @param {Timestamp} other Timestamp to add to this one. + * @return {Timestamp} the sum of this and the given Timestamp. + */ +Timestamp.prototype.add = function(other) { + // Divide each number into 4 chunks of 16 bits, and then sum the chunks. + + var a48 = this.high_ >>> 16; + var a32 = this.high_ & 0xffff; + var a16 = this.low_ >>> 16; + var a00 = this.low_ & 0xffff; + + var b48 = other.high_ >>> 16; + var b32 = other.high_ & 0xffff; + var b16 = other.low_ >>> 16; + var b00 = other.low_ & 0xffff; + + var c48 = 0, + c32 = 0, + c16 = 0, + c00 = 0; + c00 += a00 + b00; + c16 += c00 >>> 16; + c00 &= 0xffff; + c16 += a16 + b16; + c32 += c16 >>> 16; + c16 &= 0xffff; + c32 += a32 + b32; + c48 += c32 >>> 16; + c32 &= 0xffff; + c48 += a48 + b48; + c48 &= 0xffff; + return Timestamp.fromBits((c16 << 16) | c00, (c48 << 16) | c32); +}; + +/** + * Returns the difference of this and the given Timestamp. + * + * @method + * @param {Timestamp} other Timestamp to subtract from this. + * @return {Timestamp} the difference of this and the given Timestamp. + */ +Timestamp.prototype.subtract = function(other) { + return this.add(other.negate()); +}; + +/** + * Returns the product of this and the given Timestamp. + * + * @method + * @param {Timestamp} other Timestamp to multiply with this. + * @return {Timestamp} the product of this and the other. + */ +Timestamp.prototype.multiply = function(other) { + if (this.isZero()) { + return Timestamp.ZERO; + } else if (other.isZero()) { + return Timestamp.ZERO; + } + + if (this.equals(Timestamp.MIN_VALUE)) { + return other.isOdd() ? Timestamp.MIN_VALUE : Timestamp.ZERO; + } else if (other.equals(Timestamp.MIN_VALUE)) { + return this.isOdd() ? Timestamp.MIN_VALUE : Timestamp.ZERO; + } + + if (this.isNegative()) { + if (other.isNegative()) { + return this.negate().multiply(other.negate()); + } else { + return this.negate() + .multiply(other) + .negate(); + } + } else if (other.isNegative()) { + return this.multiply(other.negate()).negate(); + } + + // If both Timestamps are small, use float multiplication + if (this.lessThan(Timestamp.TWO_PWR_24_) && other.lessThan(Timestamp.TWO_PWR_24_)) { + return Timestamp.fromNumber(this.toNumber() * other.toNumber()); + } + + // Divide each Timestamp into 4 chunks of 16 bits, and then add up 4x4 products. + // We can skip products that would overflow. + + var a48 = this.high_ >>> 16; + var a32 = this.high_ & 0xffff; + var a16 = this.low_ >>> 16; + var a00 = this.low_ & 0xffff; + + var b48 = other.high_ >>> 16; + var b32 = other.high_ & 0xffff; + var b16 = other.low_ >>> 16; + var b00 = other.low_ & 0xffff; + + var c48 = 0, + c32 = 0, + c16 = 0, + c00 = 0; + c00 += a00 * b00; + c16 += c00 >>> 16; + c00 &= 0xffff; + c16 += a16 * b00; + c32 += c16 >>> 16; + c16 &= 0xffff; + c16 += a00 * b16; + c32 += c16 >>> 16; + c16 &= 0xffff; + c32 += a32 * b00; + c48 += c32 >>> 16; + c32 &= 0xffff; + c32 += a16 * b16; + c48 += c32 >>> 16; + c32 &= 0xffff; + c32 += a00 * b32; + c48 += c32 >>> 16; + c32 &= 0xffff; + c48 += a48 * b00 + a32 * b16 + a16 * b32 + a00 * b48; + c48 &= 0xffff; + return Timestamp.fromBits((c16 << 16) | c00, (c48 << 16) | c32); +}; + +/** + * Returns this Timestamp divided by the given one. + * + * @method + * @param {Timestamp} other Timestamp by which to divide. + * @return {Timestamp} this Timestamp divided by the given one. + */ +Timestamp.prototype.div = function(other) { + if (other.isZero()) { + throw Error('division by zero'); + } else if (this.isZero()) { + return Timestamp.ZERO; + } + + if (this.equals(Timestamp.MIN_VALUE)) { + if (other.equals(Timestamp.ONE) || other.equals(Timestamp.NEG_ONE)) { + return Timestamp.MIN_VALUE; // recall that -MIN_VALUE == MIN_VALUE + } else if (other.equals(Timestamp.MIN_VALUE)) { + return Timestamp.ONE; + } else { + // At this point, we have |other| >= 2, so |this/other| < |MIN_VALUE|. + var halfThis = this.shiftRight(1); + var approx = halfThis.div(other).shiftLeft(1); + if (approx.equals(Timestamp.ZERO)) { + return other.isNegative() ? Timestamp.ONE : Timestamp.NEG_ONE; + } else { + var rem = this.subtract(other.multiply(approx)); + var result = approx.add(rem.div(other)); + return result; + } + } + } else if (other.equals(Timestamp.MIN_VALUE)) { + return Timestamp.ZERO; + } + + if (this.isNegative()) { + if (other.isNegative()) { + return this.negate().div(other.negate()); + } else { + return this.negate() + .div(other) + .negate(); + } + } else if (other.isNegative()) { + return this.div(other.negate()).negate(); + } + + // Repeat the following until the remainder is less than other: find a + // floating-point that approximates remainder / other *from below*, add this + // into the result, and subtract it from the remainder. It is critical that + // the approximate value is less than or equal to the real value so that the + // remainder never becomes negative. + var res = Timestamp.ZERO; + rem = this; + while (rem.greaterThanOrEqual(other)) { + // Approximate the result of division. This may be a little greater or + // smaller than the actual value. + approx = Math.max(1, Math.floor(rem.toNumber() / other.toNumber())); + + // We will tweak the approximate result by changing it in the 48-th digit or + // the smallest non-fractional digit, whichever is larger. + var log2 = Math.ceil(Math.log(approx) / Math.LN2); + var delta = log2 <= 48 ? 1 : Math.pow(2, log2 - 48); + + // Decrease the approximation until it is smaller than the remainder. Note + // that if it is too large, the product overflows and is negative. + var approxRes = Timestamp.fromNumber(approx); + var approxRem = approxRes.multiply(other); + while (approxRem.isNegative() || approxRem.greaterThan(rem)) { + approx -= delta; + approxRes = Timestamp.fromNumber(approx); + approxRem = approxRes.multiply(other); + } + + // We know the answer can't be zero... and actually, zero would cause + // infinite recursion since we would make no progress. + if (approxRes.isZero()) { + approxRes = Timestamp.ONE; + } + + res = res.add(approxRes); + rem = rem.subtract(approxRem); + } + return res; +}; + +/** + * Returns this Timestamp modulo the given one. + * + * @method + * @param {Timestamp} other Timestamp by which to mod. + * @return {Timestamp} this Timestamp modulo the given one. + */ +Timestamp.prototype.modulo = function(other) { + return this.subtract(this.div(other).multiply(other)); +}; + +/** + * The bitwise-NOT of this value. + * + * @method + * @return {Timestamp} the bitwise-NOT of this value. + */ +Timestamp.prototype.not = function() { + return Timestamp.fromBits(~this.low_, ~this.high_); +}; + +/** + * Returns the bitwise-AND of this Timestamp and the given one. + * + * @method + * @param {Timestamp} other the Timestamp with which to AND. + * @return {Timestamp} the bitwise-AND of this and the other. + */ +Timestamp.prototype.and = function(other) { + return Timestamp.fromBits(this.low_ & other.low_, this.high_ & other.high_); +}; + +/** + * Returns the bitwise-OR of this Timestamp and the given one. + * + * @method + * @param {Timestamp} other the Timestamp with which to OR. + * @return {Timestamp} the bitwise-OR of this and the other. + */ +Timestamp.prototype.or = function(other) { + return Timestamp.fromBits(this.low_ | other.low_, this.high_ | other.high_); +}; + +/** + * Returns the bitwise-XOR of this Timestamp and the given one. + * + * @method + * @param {Timestamp} other the Timestamp with which to XOR. + * @return {Timestamp} the bitwise-XOR of this and the other. + */ +Timestamp.prototype.xor = function(other) { + return Timestamp.fromBits(this.low_ ^ other.low_, this.high_ ^ other.high_); +}; + +/** + * Returns this Timestamp with bits shifted to the left by the given amount. + * + * @method + * @param {number} numBits the number of bits by which to shift. + * @return {Timestamp} this shifted to the left by the given amount. + */ +Timestamp.prototype.shiftLeft = function(numBits) { + numBits &= 63; + if (numBits === 0) { + return this; + } else { + var low = this.low_; + if (numBits < 32) { + var high = this.high_; + return Timestamp.fromBits(low << numBits, (high << numBits) | (low >>> (32 - numBits))); + } else { + return Timestamp.fromBits(0, low << (numBits - 32)); + } + } +}; + +/** + * Returns this Timestamp with bits shifted to the right by the given amount. + * + * @method + * @param {number} numBits the number of bits by which to shift. + * @return {Timestamp} this shifted to the right by the given amount. + */ +Timestamp.prototype.shiftRight = function(numBits) { + numBits &= 63; + if (numBits === 0) { + return this; + } else { + var high = this.high_; + if (numBits < 32) { + var low = this.low_; + return Timestamp.fromBits((low >>> numBits) | (high << (32 - numBits)), high >> numBits); + } else { + return Timestamp.fromBits(high >> (numBits - 32), high >= 0 ? 0 : -1); + } + } +}; + +/** + * Returns this Timestamp with bits shifted to the right by the given amount, with the new top bits matching the current sign bit. + * + * @method + * @param {number} numBits the number of bits by which to shift. + * @return {Timestamp} this shifted to the right by the given amount, with zeros placed into the new leading bits. + */ +Timestamp.prototype.shiftRightUnsigned = function(numBits) { + numBits &= 63; + if (numBits === 0) { + return this; + } else { + var high = this.high_; + if (numBits < 32) { + var low = this.low_; + return Timestamp.fromBits((low >>> numBits) | (high << (32 - numBits)), high >>> numBits); + } else if (numBits === 32) { + return Timestamp.fromBits(high, 0); + } else { + return Timestamp.fromBits(high >>> (numBits - 32), 0); + } + } +}; + +/** + * Returns a Timestamp representing the given (32-bit) integer value. + * + * @method + * @param {number} value the 32-bit integer in question. + * @return {Timestamp} the corresponding Timestamp value. + */ +Timestamp.fromInt = function(value) { + if (-128 <= value && value < 128) { + var cachedObj = Timestamp.INT_CACHE_[value]; + if (cachedObj) { + return cachedObj; + } + } + + var obj = new Timestamp(value | 0, value < 0 ? -1 : 0); + if (-128 <= value && value < 128) { + Timestamp.INT_CACHE_[value] = obj; + } + return obj; +}; + +/** + * Returns a Timestamp representing the given value, provided that it is a finite number. Otherwise, zero is returned. + * + * @method + * @param {number} value the number in question. + * @return {Timestamp} the corresponding Timestamp value. + */ +Timestamp.fromNumber = function(value) { + if (isNaN(value) || !isFinite(value)) { + return Timestamp.ZERO; + } else if (value <= -Timestamp.TWO_PWR_63_DBL_) { + return Timestamp.MIN_VALUE; + } else if (value + 1 >= Timestamp.TWO_PWR_63_DBL_) { + return Timestamp.MAX_VALUE; + } else if (value < 0) { + return Timestamp.fromNumber(-value).negate(); + } else { + return new Timestamp( + (value % Timestamp.TWO_PWR_32_DBL_) | 0, + (value / Timestamp.TWO_PWR_32_DBL_) | 0 + ); + } +}; + +/** + * Returns a Timestamp representing the 64-bit integer that comes by concatenating the given high and low bits. Each is assumed to use 32 bits. + * + * @method + * @param {number} lowBits the low 32-bits. + * @param {number} highBits the high 32-bits. + * @return {Timestamp} the corresponding Timestamp value. + */ +Timestamp.fromBits = function(lowBits, highBits) { + return new Timestamp(lowBits, highBits); +}; + +/** + * Returns a Timestamp representation of the given string, written using the given radix. + * + * @method + * @param {string} str the textual representation of the Timestamp. + * @param {number} opt_radix the radix in which the text is written. + * @return {Timestamp} the corresponding Timestamp value. + */ +Timestamp.fromString = function(str, opt_radix) { + if (str.length === 0) { + throw Error('number format error: empty string'); + } + + var radix = opt_radix || 10; + if (radix < 2 || 36 < radix) { + throw Error('radix out of range: ' + radix); + } + + if (str.charAt(0) === '-') { + return Timestamp.fromString(str.substring(1), radix).negate(); + } else if (str.indexOf('-') >= 0) { + throw Error('number format error: interior "-" character: ' + str); + } + + // Do several (8) digits each time through the loop, so as to + // minimize the calls to the very expensive emulated div. + var radixToPower = Timestamp.fromNumber(Math.pow(radix, 8)); + + var result = Timestamp.ZERO; + for (var i = 0; i < str.length; i += 8) { + var size = Math.min(8, str.length - i); + var value = parseInt(str.substring(i, i + size), radix); + if (size < 8) { + var power = Timestamp.fromNumber(Math.pow(radix, size)); + result = result.multiply(power).add(Timestamp.fromNumber(value)); + } else { + result = result.multiply(radixToPower); + result = result.add(Timestamp.fromNumber(value)); + } + } + return result; +}; + +// NOTE: Common constant values ZERO, ONE, NEG_ONE, etc. are defined below the +// from* methods on which they depend. + +/** + * A cache of the Timestamp representations of small integer values. + * @type {Object} + * @ignore + */ +Timestamp.INT_CACHE_ = {}; + +// NOTE: the compiler should inline these constant values below and then remove +// these variables, so there should be no runtime penalty for these. + +/** + * Number used repeated below in calculations. This must appear before the + * first call to any from* function below. + * @type {number} + * @ignore + */ +Timestamp.TWO_PWR_16_DBL_ = 1 << 16; + +/** + * @type {number} + * @ignore + */ +Timestamp.TWO_PWR_24_DBL_ = 1 << 24; + +/** + * @type {number} + * @ignore + */ +Timestamp.TWO_PWR_32_DBL_ = Timestamp.TWO_PWR_16_DBL_ * Timestamp.TWO_PWR_16_DBL_; + +/** + * @type {number} + * @ignore + */ +Timestamp.TWO_PWR_31_DBL_ = Timestamp.TWO_PWR_32_DBL_ / 2; + +/** + * @type {number} + * @ignore + */ +Timestamp.TWO_PWR_48_DBL_ = Timestamp.TWO_PWR_32_DBL_ * Timestamp.TWO_PWR_16_DBL_; + +/** + * @type {number} + * @ignore + */ +Timestamp.TWO_PWR_64_DBL_ = Timestamp.TWO_PWR_32_DBL_ * Timestamp.TWO_PWR_32_DBL_; + +/** + * @type {number} + * @ignore + */ +Timestamp.TWO_PWR_63_DBL_ = Timestamp.TWO_PWR_64_DBL_ / 2; + +/** @type {Timestamp} */ +Timestamp.ZERO = Timestamp.fromInt(0); + +/** @type {Timestamp} */ +Timestamp.ONE = Timestamp.fromInt(1); + +/** @type {Timestamp} */ +Timestamp.NEG_ONE = Timestamp.fromInt(-1); + +/** @type {Timestamp} */ +Timestamp.MAX_VALUE = Timestamp.fromBits(0xffffffff | 0, 0x7fffffff | 0); + +/** @type {Timestamp} */ +Timestamp.MIN_VALUE = Timestamp.fromBits(0, 0x80000000 | 0); + +/** + * @type {Timestamp} + * @ignore + */ +Timestamp.TWO_PWR_24_ = Timestamp.fromInt(1 << 24); + +/** + * Expose. + */ +module.exports = Timestamp; +module.exports.Timestamp = Timestamp; |