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author | Florian Dold <florian.dold@gmail.com> | 2017-05-24 15:10:37 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-05-24 15:11:17 +0200 |
commit | 7a3df06eb573d36142bd1a8e03c5ce8752d300b3 (patch) | |
tree | 70bfaea8884c374876f607774850a3a51c0cb381 /node_modules/shelljs/src/grep.js | |
parent | aca1143cb9eed16cf37f04e475e4257418dd18ac (diff) | |
download | wallet-core-7a3df06eb573d36142bd1a8e03c5ce8752d300b3.tar.xz |
fix build issues and add typedoc
Diffstat (limited to 'node_modules/shelljs/src/grep.js')
-rw-r--r-- | node_modules/shelljs/src/grep.js | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/node_modules/shelljs/src/grep.js b/node_modules/shelljs/src/grep.js new file mode 100644 index 000000000..30842bcb8 --- /dev/null +++ b/node_modules/shelljs/src/grep.js @@ -0,0 +1,67 @@ +var common = require('./common'); +var fs = require('fs'); + +common.register('grep', _grep, { + globStart: 2, // don't glob-expand the regex + canReceivePipe: true, + cmdOptions: { + 'v': 'inverse', + 'l': 'nameOnly', + }, +}); + +//@ +//@ ### grep([options,] regex_filter, file [, file ...]) +//@ ### grep([options,] regex_filter, file_array) +//@ Available options: +//@ +//@ + `-v`: Inverse the sense of the regex and print the lines not matching the criteria. +//@ + `-l`: Print only filenames of matching files +//@ +//@ Examples: +//@ +//@ ```javascript +//@ grep('-v', 'GLOBAL_VARIABLE', '*.js'); +//@ grep('GLOBAL_VARIABLE', '*.js'); +//@ ``` +//@ +//@ Reads input string from given files and returns a string containing all lines of the +//@ file that match the given `regex_filter`. +function _grep(options, regex, files) { + // Check if this is coming from a pipe + var pipe = common.readFromPipe(); + + if (!files && !pipe) common.error('no paths given', 2); + + files = [].slice.call(arguments, 2); + + if (pipe) { + files.unshift('-'); + } + + var grep = []; + files.forEach(function (file) { + if (!fs.existsSync(file) && file !== '-') { + common.error('no such file or directory: ' + file, 2, { continue: true }); + return; + } + + var contents = file === '-' ? pipe : fs.readFileSync(file, 'utf8'); + var lines = contents.split(/\r*\n/); + if (options.nameOnly) { + if (contents.match(regex)) { + grep.push(file); + } + } else { + lines.forEach(function (line) { + var matched = line.match(regex); + if ((options.inverse && !matched) || (!options.inverse && matched)) { + grep.push(line); + } + }); + } + }); + + return grep.join('\n') + '\n'; +} +module.exports = _grep; |