Sha256: e688531b4d309f84ff1842710b6761cafec505b83a2336415964a83cce744e27
Contents?: true
Size: 1.36 KB
Versions: 45
Compression:
Stored size: 1.36 KB
Contents
var common = require('./common');
var fs = require('fs');
//@
//@ ### 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.
//@
//@ 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`. Wildcard `*` accepted.
function _grep(options, regex, files) {
options = common.parseOptions(options, {
'v': 'inverse'
});
if (!files)
common.error('no paths given');
if (typeof files === 'string')
files = [].slice.call(arguments, 2);
// if it's array leave it as it is
files = common.expand(files);
var grep = '';
files.forEach(function(file) {
if (!fs.existsSync(file)) {
common.error('no such file or directory: ' + file, true);
return;
}
var contents = fs.readFileSync(file, 'utf8'),
lines = contents.split(/\r*\n/);
lines.forEach(function(line) {
var matched = line.match(regex);
if ((options.inverse && !matched) || (!options.inverse && matched))
grep += line + '\n';
});
});
return common.ShellString(grep);
}
module.exports = _grep;
Version data entries
45 entries across 45 versions & 2 rubygems