109 lines
3.6 KiB
JavaScript
109 lines
3.6 KiB
JavaScript
var path = require('path'),
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fs = require('./fs'),
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PromiseConstructor,
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AbstractFileManager = require("../less/environment/abstract-file-manager.js");
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try {
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PromiseConstructor = typeof Promise === 'undefined' ? require('promise') : Promise;
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} catch(e) {
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}
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var FileManager = function() {
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};
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FileManager.prototype = new AbstractFileManager();
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FileManager.prototype.supports = function(filename, currentDirectory, options, environment) {
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return true;
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};
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FileManager.prototype.supportsSync = function(filename, currentDirectory, options, environment) {
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return true;
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};
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FileManager.prototype.loadFile = function(filename, currentDirectory, options, environment, callback) {
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var fullFilename,
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data,
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isAbsoluteFilename = this.isPathAbsolute(filename),
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filenamesTried = [];
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options = options || {};
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if (options.syncImport || !PromiseConstructor) {
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data = this.loadFileSync(filename, currentDirectory, options, environment, 'utf-8');
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callback(data.error, data);
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return;
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}
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var paths = isAbsoluteFilename ? [""] : [currentDirectory];
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if (options.paths) { paths.push.apply(paths, options.paths); }
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if (!isAbsoluteFilename && paths.indexOf('.') === -1) { paths.push('.'); }
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// promise is guaranteed to be asyncronous
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// which helps as it allows the file handle
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// to be closed before it continues with the next file
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return new PromiseConstructor(function(fulfill, reject) {
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(function tryPathIndex(i) {
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if (i < paths.length) {
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fullFilename = filename;
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if (paths[i]) {
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fullFilename = path.join(paths[i], fullFilename);
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}
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fs.stat(fullFilename, function (err) {
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if (err) {
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filenamesTried.push(fullFilename);
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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) { reject(e); return; }
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fulfill({ contents: data, filename: fullFilename});
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});
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}
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});
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} else {
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reject({ type: 'File', message: "'" + filename + "' wasn't found. Tried - " + filenamesTried.join(",") });
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}
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}(0));
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});
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};
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FileManager.prototype.loadFileSync = function(filename, currentDirectory, options, environment, encoding) {
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var fullFilename, paths, filenamesTried = [], isAbsoluteFilename = this.isPathAbsolute(filename) , data;
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options = options || {};
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paths = isAbsoluteFilename ? [""] : [currentDirectory];
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if (options.paths) {
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paths.push.apply(paths, options.paths);
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}
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if (!isAbsoluteFilename && paths.indexOf('.') === -1) {
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paths.push('.');
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}
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var err, result;
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for (var i = 0; i < paths.length; i++) {
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try {
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fullFilename = filename;
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if (paths[i]) {
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fullFilename = path.join(paths[i], fullFilename);
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}
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filenamesTried.push(fullFilename);
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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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err = { type: 'File', message: "'" + filename + "' wasn't found. Tried - " + filenamesTried.join(",") };
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result = { error: err };
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} else {
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data = fs.readFileSync(fullFilename, encoding);
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result = { contents: data, filename: fullFilename};
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}
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return result;
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};
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module.exports = FileManager;
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