3da83322
 Administrator
21.03.16 Versrka
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var path = require('path');
var accord = require('accord');
var through2 = require('through2');
var gutil = require('gulp-util');
var assign = require('object-assign');
var applySourceMap = require('vinyl-sourcemaps-apply');
var PluginError = gutil.PluginError;
var less = accord.load('less');
module.exports = function (options) {
// Mixes in default options.
options = assign({}, {
compress: false,
paths: []
}, options);
return through2.obj(function(file, enc, cb) {
if (file.isNull()) {
return cb(null, file);
}
if (file.isStream()) {
return cb(new PluginError('gulp-less', 'Streaming not supported'));
}
var str = file.contents.toString();
// Clones the options object
var opts = assign({}, options);
// Injects the path of the current file
opts.filename = file.path;
// Bootstrap source maps
if (file.sourceMap) { opts.sourcemap = true; }
less.render(str, opts).then(function(res) {
file.contents = new Buffer(res.result);
file.path = gutil.replaceExtension(file.path, '.css');
if (res.sourcemap) {
res.sourcemap.file = file.relative;
res.sourcemap.sources = res.sourcemap.sources.map(function (source) {
return path.relative(file.base, source);
});
applySourceMap(file, res.sourcemap);
}
return file;
}).then(function(file) {
cb(null, file);
}).catch(function(err) {
// Convert the keys so PluginError can read them
err.lineNumber = err.line;
err.fileName = err.filename;
// Add a better error message
err.message = err.message + ' in file ' + err.fileName + ' line no. ' + err.lineNumber;
throw new PluginError('gulp-less', err);
}).done(undefined, cb);
});
};
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