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org.lesscss.mojo.js.less.index.js Maven / Gradle / Ivy
var path = require('path'),
url = require('url'),
request,
fs = require('fs');
var less = {
version: [1, 5, 1],
Parser: require('./parser').Parser,
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) {
try { callback(e, root && root.toCSS && root.toCSS(options)); }
catch (err) { callback(err); }
});
} else {
ee = new (require('events').EventEmitter)();
process.nextTick(function () {
parser.parse(input, function (e, root) {
if (e) { return ee.emit('error', e); }
try { ee.emit('success', root.toCSS(options)); }
catch (err) { ee.emit('error', err); }
});
});
return ee;
}
},
formatError: function(ctx, options) {
options = options || {};
var message = "";
var extract = ctx.extract;
var error = [];
var stylize = options.color ? require('./lessc_helper').stylize : function (str) { return str; };
// only output a stack if it isn't a less error
if (ctx.stack && !ctx.type) { return stylize(ctx.stack, 'red'); }
if (!ctx.hasOwnProperty('index') || !extract) {
return ctx.stack || ctx.message;
}
if (typeof(extract[0]) === 'string') {
error.push(stylize((ctx.line - 1) + ' ' + extract[0], 'grey'));
}
if (typeof(extract[1]) === 'string') {
var errorTxt = ctx.line + ' ';
if (extract[1]) {
errorTxt += extract[1].slice(0, ctx.column) +
stylize(stylize(stylize(extract[1][ctx.column], 'bold') +
extract[1].slice(ctx.column + 1), 'red'), 'inverse');
}
error.push(errorTxt);
}
if (typeof(extract[2]) === 'string') {
error.push(stylize((ctx.line + 1) + ' ' + extract[2], 'grey'));
}
error = error.join('\n') + stylize('', 'reset') + '\n';
message += stylize(ctx.type + 'Error: ' + ctx.message, 'red');
ctx.filename && (message += stylize(' in ', 'red') + ctx.filename +
stylize(' on line ' + ctx.line + ', column ' + (ctx.column + 1) + ':', 'grey'));
message += '\n' + error;
if (ctx.callLine) {
message += stylize('from ', 'red') + (ctx.filename || '') + '/n';
message += stylize(ctx.callLine, 'grey') + ' ' + ctx.callExtract + '/n';
}
return message;
},
writeError: function (ctx, options) {
options = options || {};
if (options.silent) { return; }
console.error(less.formatError(ctx, options));
}
};
['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', 'unicode-descriptor', 'negative', 'extend'
].forEach(function (n) {
require('./tree/' + n);
});
var isUrlRe = /^(?:https?:)?\/\//i;
less.Parser.fileLoader = function (file, currentFileInfo, callback, env) {
var pathname, dirname, data,
newFileInfo = {
relativeUrls: env.relativeUrls,
entryPath: currentFileInfo.entryPath,
rootpath: currentFileInfo.rootpath,
rootFilename: currentFileInfo.rootFilename
};
function handleDataAndCallCallback(data) {
var j = file.lastIndexOf('/');
// Pass on an updated rootpath if path of imported file is relative and file
// is in a (sub|sup) directory
//
// Examples:
// - If path of imported file is 'module/nav/nav.less' and rootpath is 'less/',
// then rootpath should become 'less/module/nav/'
// - If path of imported file is '../mixins.less' and rootpath is 'less/',
// then rootpath should become 'less/../'
if(newFileInfo.relativeUrls && !/^(?:[a-z-]+:|\/)/.test(file) && j != -1) {
var relativeSubDirectory = file.slice(0, j+1);
newFileInfo.rootpath = newFileInfo.rootpath + relativeSubDirectory; // append (sub|sup) directory path of imported file
}
newFileInfo.currentDirectory = pathname.replace(/[^\\\/]*$/, "");
newFileInfo.filename = pathname;
callback(null, data, pathname, newFileInfo);
}
var isUrl = isUrlRe.test( file );
if (isUrl || isUrlRe.test(currentFileInfo.currentDirectory)) {
if (request === undefined) {
try { request = require('request'); }
catch(e) { request = null; }
}
if (!request) {
callback({ type: 'File', message: "optional dependency 'request' required to import over http(s)\n" });
return;
}
var urlStr = isUrl ? file : url.resolve(currentFileInfo.currentDirectory, file),
urlObj = url.parse(urlStr);
request.get({uri: urlStr, strictSSL: !env.insecure }, function (error, res, body) {
if (res.statusCode === 404) {
callback({ type: 'File', message: "resource '" + urlStr + "' was not found\n" });
return;
}
if (!body) {
console.error( 'Warning: Empty body (HTTP '+ res.statusCode + ') returned by "' + urlStr +'"' );
}
if (error) {
callback({ type: 'File', message: "resource '" + urlStr + "' gave this Error:\n "+ error +"\n" });
}
pathname = urlStr;
dirname = urlObj.protocol +'//'+ urlObj.host + urlObj.pathname.replace(/[^\/]*$/, '');
handleDataAndCallCallback(body);
});
} else {
var paths = [currentFileInfo.currentDirectory].concat(env.paths);
paths.push('.');
if (env.syncImport) {
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) {
callback({ type: 'File', message: "'" + file + "' wasn't found" });
return;
}
try {
data = fs.readFileSync(pathname, 'utf-8');
handleDataAndCallCallback(data);
} catch (e) {
callback(e);
}
} else {
(function tryPathIndex(i) {
if (i < paths.length) {
pathname = path.join(paths[i], file);
fs.stat(pathname, function (err) {
if (err) {
tryPathIndex(i + 1);
} else {
fs.readFile(pathname, 'utf-8', function(e, data) {
if (e) { callback(e); }
handleDataAndCallCallback(data);
});
}
});
} else {
callback({ type: 'File', message: "'" + file + "' wasn't found" });
}
}(0));
}
}
};
require('./env');
require('./functions');
require('./colors');
require('./visitor.js');
require('./import-visitor.js');
require('./extend-visitor.js');
require('./join-selector-visitor.js');
require('./to-css-visitor.js');
require('./source-map-output.js');
for (var k in less) { exports[k] = less[k]; }