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var path = require('path'),
sys = require('util'),
fs = require('fs');
var less = {
version: [1, 3, 0],
Parser: require('./parser').Parser,
importer: require('./parser').importer,
tree: require('./tree'),
render: function (input, options, callback) {
options = options || {};
if (typeof(options) === 'function') {
callback = options, options = {};
}
var parser = new(less.Parser)(options),
ee;
if (callback) {
parser.parse(input, function (e, root) {
callback(e, root && root.toCSS && root.toCSS(options));
});
} 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(options)) }
});
});
return ee;
}
},
writeError: function (ctx, options) {
options = options || {};
var message = "";
var extract = ctx.extract;
var error = [];
var stylize = options.color ? less.stylize : function (str) { return str };
if (options.silent) { return }
if (ctx.stack) { return sys.error(stylize(ctx.stack, 'red')) }
if (!ctx.hasOwnProperty('index')) {
return sys.error(ctx.stack || ctx.message);
}
if (typeof(extract[0]) === 'string') {
error.push(stylize((ctx.line - 1) + ' ' + extract[0], 'grey'));
}
if (extract[1]) {
error.push(ctx.line + ' ' + extract[1].slice(0, ctx.column)
+ stylize(stylize(stylize(extract[1][ctx.column], 'bold')
+ extract[1].slice(ctx.column + 1), 'red'), 'inverse'));
}
if (typeof(extract[2]) === 'string') {
error.push(stylize((ctx.line + 1) + ' ' + extract[2], 'grey'));
}
error = error.join('\n') + '\033[0m\n';
message += stylize(ctx.type + 'Error: ' + ctx.message, 'red');
ctx.filename && (message += stylize(' in ', 'red') + ctx.filename +
stylize(':' + ctx.line + ':' + ctx.column, 'grey'));
sys.error(message, error);
if (ctx.callLine) {
sys.error(stylize('from ', 'red') + (ctx.filename || ''));
sys.error(stylize(ctx.callLine, 'grey') + ' ' + ctx.callExtract);
}
}
};
['color', 'directive', 'operation', 'dimension',
'keyword', 'variable', 'ruleset', 'element',
'selector', 'quoted', 'expression', 'rule',
'call', 'url', 'alpha', 'import',
'mixin', 'comment', 'anonymous', 'value',
'javascript', 'assignment', 'condition', 'paren',
'media'
].forEach(function (n) {
require('./tree/' + n);
});
less.Parser.importer = function (file, paths, callback, env) {
var pathname;
// TODO: Undo this at some point,
// or use different approach.
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.readFile(pathname, 'utf-8', function(e, data) {
if (e) return callback(e);
new(less.Parser)({
paths: [path.dirname(pathname)].concat(paths),
filename: pathname
}).parse(data, function (e, root) {
callback(e, root, data);
});
});
} else {
if (typeof(env.errback) === "function") {
env.errback(file, paths, callback);
} else {
callback({ type: 'File', message: "'" + file + "' wasn't found.\n" });
}
}
}
require('./functions');
require('./colors');
for (var k in less) { exports[k] = less[k] }
// Stylize a string
function stylize(str, style) {
var styles = {
'bold' : [1, 22],
'inverse' : [7, 27],
'underline' : [4, 24],
'yellow' : [33, 39],
'green' : [32, 39],
'red' : [31, 39],
'grey' : [90, 39]
};
return '\033[' + styles[style][0] + 'm' + str +
'\033[' + styles[style][1] + 'm';
}
less.stylize = stylize;
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