ce4c83ff
 wxy
初始提交
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/* global window, XMLHttpRequest */
module.exports = function(options, logger) {
var AbstractFileManager = require('../less/environment/abstract-file-manager.js');
var fileCache = {};
// TODOS - move log somewhere. pathDiff and doing something similar in node. use pathDiff in the other browser file for the initial load
var FileManager = function() {
};
FileManager.prototype = new AbstractFileManager();
FileManager.prototype.alwaysMakePathsAbsolute = function alwaysMakePathsAbsolute() {
return true;
};
FileManager.prototype.join = function join(basePath, laterPath) {
if (!basePath) {
return laterPath;
}
return this.extractUrlParts(laterPath, basePath).path;
};
FileManager.prototype.doXHR = function doXHR(url, type, callback, errback) {
var xhr = new XMLHttpRequest();
var async = options.isFileProtocol ? options.fileAsync : true;
if (typeof xhr.overrideMimeType === 'function') {
xhr.overrideMimeType('text/css');
}
logger.debug('XHR: Getting \'' + url + '\'');
xhr.open('GET', url, async);
xhr.setRequestHeader('Accept', type || 'text/x-less, text/css; q=0.9, */*; q=0.5');
xhr.send(null);
function handleResponse(xhr, callback, errback) {
if (xhr.status >= 200 && xhr.status < 300) {
callback(xhr.responseText,
xhr.getResponseHeader('Last-Modified'));
} else if (typeof errback === 'function') {
errback(xhr.status, url);
}
}
if (options.isFileProtocol && !options.fileAsync) {
if (xhr.status === 0 || (xhr.status >= 200 && xhr.status < 300)) {
callback(xhr.responseText);
} else {
errback(xhr.status, url);
}
} else if (async) {
xhr.onreadystatechange = function () {
if (xhr.readyState == 4) {
handleResponse(xhr, callback, errback);
}
};
} else {
handleResponse(xhr, callback, errback);
}
};
FileManager.prototype.supports = function(filename, currentDirectory, options, environment) {
return true;
};
FileManager.prototype.clearFileCache = function() {
fileCache = {};
};
FileManager.prototype.loadFile = function loadFile(filename, currentDirectory, options, environment) {
// TODO: Add prefix support like less-node?
// What about multiple paths?
if (currentDirectory && !this.isPathAbsolute(filename)) {
filename = currentDirectory + filename;
}
filename = options.ext ? this.tryAppendExtension(filename, options.ext) : filename;
options = options || {};
// sheet may be set to the stylesheet for the initial load or a collection of properties including
// some context variables for imports
var hrefParts = this.extractUrlParts(filename, window.location.href);
var href = hrefParts.url;
var self = this;
return new Promise(function(resolve, reject) {
if (options.useFileCache && fileCache[href]) {
try {
var lessText = fileCache[href];
return resolve({ contents: lessText, filename: href, webInfo: { lastModified: new Date() }});
} catch (e) {
return reject({ filename: href, message: 'Error loading file ' + href + ' error was ' + e.message });
}
}
self.doXHR(href, options.mime, function doXHRCallback(data, lastModified) {
// per file cache
fileCache[href] = data;
// Use remote copy (re-parse)
resolve({ contents: data, filename: href, webInfo: { lastModified: lastModified }});
}, function doXHRError(status, url) {
reject({ type: 'File', message: '\'' + url + '\' wasn\'t found (' + status + ')', href: href });
});
});
};
return FileManager;
};
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