Created
July 13, 2011 14:37
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lesswatch command that can be run to watch a directory and compile .less files to .css files when they are modified.
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#!/usr/bin/env node | |
var fs = require('fs'); | |
var exec = require('child_process').exec; | |
/* | |
* lesswatch usage: | |
* | |
* `lesswatch` to watch the current directory | |
* OR | |
* `lesswatch path/to/dir` to watch a directory | |
* OR | |
* `lesswatch path/to/dir1 path/to/dir2` to watch two (or more) directories | |
*/ | |
/** | |
* Compile a .less file to a .css file | |
*/ | |
function compile(file, outfile) { | |
if(typeof(outfile) !== 'string') outfile = file.substr(0, file.length - 5) + '.css'; | |
exec('lessc ' + file, function(error, stdout, stderr){ | |
if(error) { | |
console.error('ERROR compiling ' + file) | |
console.error(stderr); | |
} else { | |
fs.writeFile(outfile, stdout); | |
console.log('Compiled ' + file); | |
} | |
}); | |
} | |
function watchDir(path) { | |
var files = fs.readdirSync(path); | |
var prefix = path === '.' ? '' : (path + '/'); | |
for(var i in files) { | |
var file = prefix + files[i]; | |
if(fs.statSync(file).isDirectory()) { | |
// watch subdirectories recursively | |
watchDir(file); | |
} else { | |
if(file.substr(-5) === '.less') { | |
compile(file); | |
fs.watchFile(file, function(fn){ return function(curr, prev){ | |
if(+curr.mtime !== +prev.mtime) { | |
compile(fn); | |
} | |
}; }(file)); | |
} | |
} | |
} | |
} | |
/*************************/ | |
var dirs = ['.']; | |
var args = process.argv.slice(2); | |
if(args.length > 0) dirs = args; | |
for(var i in dirs) { | |
watchDir(dirs[i]); | |
} |
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