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https://github.com/less/less.js.git
synced 2026-04-09 03:00:20 -04:00
start abstracting out the file loader
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Luke Page
103
lib/less/environments/node.js
Normal file
103
lib/less/environments/node.js
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@@ -0,0 +1,103 @@
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var path = require('path'),
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url = require('url'),
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request,
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fs = require('fs'),
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isUrlRe = /^(?:https?:)?\/\//i;
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module.exports = {
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warn: function(env, msg) {
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console.warn(msg);
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},
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getPath: function (env, filename) {
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var j = filename.lastIndexOf('/');
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if (j < 0) {
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j = filename.lastIndexOf('\\');
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}
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if (j < 0) {
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return "";
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}
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return filename.slice(0, j + 1);
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},
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isPathAbsolute: function(env, filename) {
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return /^(?:[a-z-]+:|\/|\\)/.test(filename);
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},
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loadFile: function(env, filename, currentDirectory, callback) {
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var fullFilename,
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data,
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isUrl = isUrlRe.test( filename );
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if (isUrl || isUrlRe.test(currentDirectory)) {
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if (request === undefined) {
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try { request = require('request'); }
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catch(e) { request = null; }
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}
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if (!request) {
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callback({ type: 'File', message: "optional dependency 'request' required to import over http(s)\n" });
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return;
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}
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var urlStr = isUrl ? filename : url.resolve(currentDirectory, filename);
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request.get({uri: urlStr, strictSSL: !env.insecure }, function (error, res, body) {
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if (res.statusCode === 404) {
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callback({ type: 'File', message: "resource '" + urlStr + "' was not found\n" });
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return;
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}
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if (!body) {
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this.warn( env, 'Warning: Empty body (HTTP '+ res.statusCode + ') returned by "' + urlStr +'"');
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}
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if (error) {
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callback({ type: 'File', message: "resource '" + urlStr + "' gave this Error:\n "+ error +"\n" });
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}
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fullFilename = urlStr;
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callback(null, body, fullFilename);
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});
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} else {
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var paths = [currentDirectory].concat(env.paths);
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paths.push('.');
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if (env.syncImport) {
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for (var i = 0; i < paths.length; i++) {
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try {
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fullFilename = path.join(paths[i], filename);
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fs.statSync(fullFilename);
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break;
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} catch (e) {
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fullFilename = null;
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}
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}
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if (!fullFilename) {
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callback({ type: 'File', message: "'" + filename + "' wasn't found" });
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return;
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}
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try {
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data = fs.readFileSync(fullFilename, 'utf-8');
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callback(null, data, fullFilename);
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} catch (e) {
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callback(e);
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}
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} else {
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(function tryPathIndex(i) {
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if (i < paths.length) {
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fullFilename = path.join(paths[i], filename);
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fs.stat(fullFilename, function (err) {
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if (err) {
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tryPathIndex(i + 1);
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} else {
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fs.readFile(fullFilename, 'utf-8', function(e, data) {
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if (e) { callback(e); }
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callback(null, data, fullFilename);
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});
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}
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});
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} else {
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callback({ type: 'File', message: "'" + filename + "' wasn't found" });
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}
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}(0));
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}
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}
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}
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};
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@@ -1,8 +1,3 @@
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var path = require('path'),
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url = require('url'),
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request,
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fs = require('fs');
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var less = {
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version: [1, 6, 3],
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Parser: require('./parser').Parser,
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@@ -123,20 +118,21 @@ require('./tree/negative');
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require('./tree/extend');
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require('./tree/ruleset-call');
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less.Parser.environment = require("./environments/node");
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var isUrlRe = /^(?:https?:)?\/\//i;
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less.Parser.fileLoader = function (file, currentFileInfo, callback, env) {
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var pathname, dirname, data,
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newFileInfo = {
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less.Parser.fileLoader = function (filename, currentFileInfo, callback, env) {
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var newFileInfo = {
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relativeUrls: env.relativeUrls,
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entryPath: currentFileInfo.entryPath,
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rootpath: currentFileInfo.rootpath,
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rootFilename: currentFileInfo.rootFilename
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};
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function handleDataAndCallCallback(data) {
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var j = file.lastIndexOf('/');
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function handleDataAndCallCallback(e, data, resolvedFilename) {
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if (e) {
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callback(e);
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return;
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}
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// Pass on an updated rootpath if path of imported file is relative and file
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// is in a (sub|sup) directory
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@@ -146,92 +142,17 @@ less.Parser.fileLoader = function (file, currentFileInfo, callback, env) {
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// then rootpath should become 'less/module/nav/'
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// - If path of imported file is '../mixins.less' and rootpath is 'less/',
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// then rootpath should become 'less/../'
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if(newFileInfo.relativeUrls && !/^(?:[a-z-]+:|\/)/.test(file) && j != -1) {
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var relativeSubDirectory = file.slice(0, j+1);
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newFileInfo.rootpath = newFileInfo.rootpath + relativeSubDirectory; // append (sub|sup) directory path of imported file
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var originalRelativePath = less.Parser.environment.getPath(env, filename);
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if(newFileInfo.relativeUrls && !less.Parser.environment.isPathAbsolute(env, filename) && originalRelativePath) {
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newFileInfo.rootpath = newFileInfo.rootpath + originalRelativePath; // append (sub|sup) directory path of imported file
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}
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newFileInfo.currentDirectory = pathname.replace(/[^\\\/]*$/, "");
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newFileInfo.filename = pathname;
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newFileInfo.currentDirectory = less.Parser.environment.getPath(env, resolvedFilename);
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newFileInfo.filename = resolvedFilename;
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callback(null, data, pathname, newFileInfo);
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callback(null, data, resolvedFilename, newFileInfo); //TODO adjust callback
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}
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var isUrl = isUrlRe.test( file );
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if (isUrl || isUrlRe.test(currentFileInfo.currentDirectory)) {
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if (request === undefined) {
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try { request = require('request'); }
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catch(e) { request = null; }
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}
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if (!request) {
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callback({ type: 'File', message: "optional dependency 'request' required to import over http(s)\n" });
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return;
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}
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var urlStr = isUrl ? file : url.resolve(currentFileInfo.currentDirectory, file),
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urlObj = url.parse(urlStr);
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request.get({uri: urlStr, strictSSL: !env.insecure }, function (error, res, body) {
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if (res.statusCode === 404) {
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callback({ type: 'File', message: "resource '" + urlStr + "' was not found\n" });
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return;
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}
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if (!body) {
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console.error( 'Warning: Empty body (HTTP '+ res.statusCode + ') returned by "' + urlStr +'"' );
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}
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if (error) {
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callback({ type: 'File', message: "resource '" + urlStr + "' gave this Error:\n "+ error +"\n" });
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}
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pathname = urlStr;
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dirname = urlObj.protocol +'//'+ urlObj.host + urlObj.pathname.replace(/[^\/]*$/, '');
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handleDataAndCallCallback(body);
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});
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} else {
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var paths = [currentFileInfo.currentDirectory].concat(env.paths);
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paths.push('.');
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if (env.syncImport) {
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for (var i = 0; i < paths.length; i++) {
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try {
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pathname = path.join(paths[i], file);
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fs.statSync(pathname);
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break;
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} catch (e) {
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pathname = null;
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}
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}
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if (!pathname) {
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callback({ type: 'File', message: "'" + file + "' wasn't found" });
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return;
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}
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try {
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data = fs.readFileSync(pathname, 'utf-8');
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handleDataAndCallCallback(data);
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} catch (e) {
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callback(e);
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}
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} else {
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(function tryPathIndex(i) {
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if (i < paths.length) {
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pathname = path.join(paths[i], file);
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fs.stat(pathname, function (err) {
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if (err) {
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tryPathIndex(i + 1);
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} else {
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fs.readFile(pathname, 'utf-8', function(e, data) {
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if (e) { callback(e); }
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handleDataAndCallCallback(data);
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});
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}
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});
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} else {
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callback({ type: 'File', message: "'" + file + "' wasn't found" });
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}
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}(0));
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}
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}
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less.Parser.environment.loadFile(env, filename, currentFileInfo.currentDirectory, handleDataAndCallCallback);
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};
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require('./env');
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@@ -244,4 +165,4 @@ require('./join-selector-visitor.js');
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require('./to-css-visitor.js');
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require('./source-map-output.js');
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for (var k in less) { if (less.hasOwnProperty(k)) { exports[k] = less[k]; }}
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module.exports = less;
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