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author | 2020-11-16 00:10:28 +0100 | |
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committer | 2020-11-16 00:10:28 +0100 | |
commit | e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch) | |
tree | 55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/gauge/wide-truncate.js | |
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Diffstat (limited to 'node_modules/gauge/wide-truncate.js')
-rw-r--r-- | node_modules/gauge/wide-truncate.js | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/node_modules/gauge/wide-truncate.js b/node_modules/gauge/wide-truncate.js new file mode 100644 index 0000000..c531bc4 --- /dev/null +++ b/node_modules/gauge/wide-truncate.js @@ -0,0 +1,25 @@ +'use strict' +var stringWidth = require('string-width') +var stripAnsi = require('strip-ansi') + +module.exports = wideTruncate + +function wideTruncate (str, target) { + if (stringWidth(str) === 0) return str + if (target <= 0) return '' + if (stringWidth(str) <= target) return str + + // We compute the number of bytes of ansi sequences here and add + // that to our initial truncation to ensure that we don't slice one + // that we want to keep in half. + var noAnsi = stripAnsi(str) + var ansiSize = str.length + noAnsi.length + var truncated = str.slice(0, target + ansiSize) + + // we have to shrink the result to account for our ansi sequence buffer + // (if an ansi sequence was truncated) and double width characters. + while (stringWidth(truncated) > target) { + truncated = truncated.slice(0, -1) + } + return truncated +} |