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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/cross-spawn/lib/util
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Diffstat (limited to 'node_modules/cross-spawn/lib/util')
-rw-r--r--node_modules/cross-spawn/lib/util/escape.js45
-rw-r--r--node_modules/cross-spawn/lib/util/readShebang.js32
-rw-r--r--node_modules/cross-spawn/lib/util/resolveCommand.js47
3 files changed, 124 insertions, 0 deletions
diff --git a/node_modules/cross-spawn/lib/util/escape.js b/node_modules/cross-spawn/lib/util/escape.js
new file mode 100644
index 0000000..b0bb84c
--- /dev/null
+++ b/node_modules/cross-spawn/lib/util/escape.js
@@ -0,0 +1,45 @@
+'use strict';
+
+// See http://www.robvanderwoude.com/escapechars.php
+const metaCharsRegExp = /([()\][%!^"`<>&|;, *?])/g;
+
+function escapeCommand(arg) {
+ // Escape meta chars
+ arg = arg.replace(metaCharsRegExp, '^$1');
+
+ return arg;
+}
+
+function escapeArgument(arg, doubleEscapeMetaChars) {
+ // Convert to string
+ arg = `${arg}`;
+
+ // Algorithm below is based on https://qntm.org/cmd
+
+ // Sequence of backslashes followed by a double quote:
+ // double up all the backslashes and escape the double quote
+ arg = arg.replace(/(\\*)"/g, '$1$1\\"');
+
+ // Sequence of backslashes followed by the end of the string
+ // (which will become a double quote later):
+ // double up all the backslashes
+ arg = arg.replace(/(\\*)$/, '$1$1');
+
+ // All other backslashes occur literally
+
+ // Quote the whole thing:
+ arg = `"${arg}"`;
+
+ // Escape meta chars
+ arg = arg.replace(metaCharsRegExp, '^$1');
+
+ // Double escape meta chars if necessary
+ if (doubleEscapeMetaChars) {
+ arg = arg.replace(metaCharsRegExp, '^$1');
+ }
+
+ return arg;
+}
+
+module.exports.command = escapeCommand;
+module.exports.argument = escapeArgument;
diff --git a/node_modules/cross-spawn/lib/util/readShebang.js b/node_modules/cross-spawn/lib/util/readShebang.js
new file mode 100644
index 0000000..bd4f128
--- /dev/null
+++ b/node_modules/cross-spawn/lib/util/readShebang.js
@@ -0,0 +1,32 @@
+'use strict';
+
+const fs = require('fs');
+const shebangCommand = require('shebang-command');
+
+function readShebang(command) {
+ // Read the first 150 bytes from the file
+ const size = 150;
+ let buffer;
+
+ if (Buffer.alloc) {
+ // Node.js v4.5+ / v5.10+
+ buffer = Buffer.alloc(size);
+ } else {
+ // Old Node.js API
+ buffer = new Buffer(size);
+ buffer.fill(0); // zero-fill
+ }
+
+ let fd;
+
+ try {
+ fd = fs.openSync(command, 'r');
+ fs.readSync(fd, buffer, 0, size, 0);
+ fs.closeSync(fd);
+ } catch (e) { /* Empty */ }
+
+ // Attempt to extract shebang (null is returned if not a shebang)
+ return shebangCommand(buffer.toString());
+}
+
+module.exports = readShebang;
diff --git a/node_modules/cross-spawn/lib/util/resolveCommand.js b/node_modules/cross-spawn/lib/util/resolveCommand.js
new file mode 100644
index 0000000..2fd5ad2
--- /dev/null
+++ b/node_modules/cross-spawn/lib/util/resolveCommand.js
@@ -0,0 +1,47 @@
+'use strict';
+
+const path = require('path');
+const which = require('which');
+const pathKey = require('path-key')();
+
+function resolveCommandAttempt(parsed, withoutPathExt) {
+ const cwd = process.cwd();
+ const hasCustomCwd = parsed.options.cwd != null;
+
+ // If a custom `cwd` was specified, we need to change the process cwd
+ // because `which` will do stat calls but does not support a custom cwd
+ if (hasCustomCwd) {
+ try {
+ process.chdir(parsed.options.cwd);
+ } catch (err) {
+ /* Empty */
+ }
+ }
+
+ let resolved;
+
+ try {
+ resolved = which.sync(parsed.command, {
+ path: (parsed.options.env || process.env)[pathKey],
+ pathExt: withoutPathExt ? path.delimiter : undefined,
+ });
+ } catch (e) {
+ /* Empty */
+ } finally {
+ process.chdir(cwd);
+ }
+
+ // If we successfully resolved, ensure that an absolute path is returned
+ // Note that when a custom `cwd` was used, we need to resolve to an absolute path based on it
+ if (resolved) {
+ resolved = path.resolve(hasCustomCwd ? parsed.options.cwd : '', resolved);
+ }
+
+ return resolved;
+}
+
+function resolveCommand(parsed) {
+ return resolveCommandAttempt(parsed) || resolveCommandAttempt(parsed, true);
+}
+
+module.exports = resolveCommand;