carto/lib/less.js
2010-03-22 23:15:25 -04:00

93 lines
2.5 KiB
JavaScript

var path = require('path'),
fs = require('fs');
require.paths.unshift(__dirname);
var less = {
version: [2, 0, 0],
Parser: require('less/parser').Parser,
importer: require('less/parser').importer,
tree: require('less/tree'),
render: function (input, options, callback) {
options = options || {};
if (typeof(options) === 'function') {
callback = options, options = {};
}
var parser = new(this.Parser)(options),
ee;
if (callback) {
parser.parse(input, function (e, root) {
callback(e, root.toCSS());
});
} else {
ee = new(require('events').EventEmitter);
process.nextTick(function () {
parser.parse(input, function (e, root) {
if (e) { ee.emit('error', e) }
else { ee.emit('success', root.toCSS()) }
});
});
return ee;
}
}
};
['color', 'directive', 'operation', 'dimension',
'keyword', 'variable', 'ruleset', 'element',
'selector', 'quoted', 'expression', 'rule',
'call', 'url', 'alpha', 'import',
'mixin', 'comment'
].forEach(function (n) {
require(path.join('less', 'tree', n));
});
less.Parser.importer = function (file, paths, callback) {
var pathname;
paths.unshift('.');
for (var i = 0; i < paths.length; i++) {
try {
pathname = path.join(paths[i], file);
fs.statSync(pathname);
break;
} catch (e) {
pathname = null;
}
}
if (pathname) {
fs.stat(pathname, function (e, stats) {
if (e) process.stdio.writeError(e);
fs.open(pathname, process.O_RDONLY, stats.mode, function (e, fd) {
if (e) process.stdio.writeError(e);
fs.read(fd, stats.size, 0, "utf8", function (e, data) {
if (e) process.stdio.writeError(e);
new(less.Parser)({
paths: [path.dirname(pathname)]
}).parse(data, function (e, root) {
if (e) process.stdio.writeError(e);
callback(root);
});
});
});
});
} else {
process.stdio.writeError("file '" + file + "' wasn't found.\n");
process.exit(1);
}
}
require('less/functions');
require('ext/array');
for (var k in less) { exports[k] = less[k] }