252 lines
8.3 KiB
JavaScript
252 lines
8.3 KiB
JavaScript
define(['require', './normalize'], function(req, normalize) {
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var nodePrint = function() {};
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if (requirejs.tools)
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requirejs.tools.useLib(function(req) {
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req(['node/print'], function(_nodePrint) {
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nodePrint = _nodePrint;
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}, function(){});
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});
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var cssAPI = {};
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function compress(css) {
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if (typeof process !== "undefined" && process.versions && !!process.versions.node && require.nodeRequire) {
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try {
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var csso = require.nodeRequire('csso');
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var csslen = css.length;
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css = csso.justDoIt(css);
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nodePrint('Compressed CSS output to ' + Math.round(css.length / csslen * 100) + '%.');
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return css;
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}
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catch(e) {
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nodePrint('Compression module not installed. Use "npm install csso -g" to enable.');
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return css;
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}
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}
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nodePrint('Compression not supported outside of nodejs environments.');
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return css;
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}
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//load file code - stolen from text plugin
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function loadFile(path) {
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if (typeof process !== "undefined" && process.versions && !!process.versions.node && require.nodeRequire) {
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var fs = require.nodeRequire('fs');
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var file = fs.readFileSync(path, 'utf8');
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if (file.indexOf('\uFEFF') === 0)
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return file.substring(1);
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return file;
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}
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else {
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var file = new java.io.File(path),
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lineSeparator = java.lang.System.getProperty("line.separator"),
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input = new java.io.BufferedReader(new java.io.InputStreamReader(new java.io.FileInputStream(file), 'utf-8')),
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stringBuffer, line;
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try {
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stringBuffer = new java.lang.StringBuffer();
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line = input.readLine();
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if (line && line.length() && line.charAt(0) === 0xfeff)
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line = line.substring(1);
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stringBuffer.append(line);
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while ((line = input.readLine()) !== null) {
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stringBuffer.append(lineSeparator).append(line);
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}
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return String(stringBuffer.toString());
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}
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finally {
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input.close();
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}
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}
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}
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function saveFile(path, data) {
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if (typeof process !== "undefined" && process.versions && !!process.versions.node && require.nodeRequire) {
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var fs = require.nodeRequire('fs');
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fs.writeFileSync(path, data, 'utf8');
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}
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else {
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var content = new java.lang.String(data);
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var output = new java.io.BufferedWriter(new java.io.OutputStreamWriter(new java.io.FileOutputStream(path), 'utf-8'));
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try {
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output.write(content, 0, content.length());
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output.flush();
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}
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finally {
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output.close();
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}
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}
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}
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//when adding to the link buffer, paths are normalised to the baseUrl
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//when removing from the link buffer, paths are normalised to the output file path
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function escape(content) {
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return content.replace(/(["'\\])/g, '\\$1')
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.replace(/[\f]/g, "\\f")
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.replace(/[\b]/g, "\\b")
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.replace(/[\n]/g, "\\n")
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.replace(/[\t]/g, "\\t")
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.replace(/[\r]/g, "\\r");
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}
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// NB add @media query support for media imports
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var importRegEx = /@import\s*(url)?\s*(('([^']*)'|"([^"]*)")|\(('([^']*)'|"([^"]*)"|([^\)]*))\))\s*;?/g;
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var loadCSSFile = function(fileUrl) {
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var css = loadFile(fileUrl);
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// normalize the css (except import statements)
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css = normalize(css, fileUrl, baseUrl, cssBase);
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// detect all import statements in the css and normalize
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var importUrls = [];
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var importIndex = [];
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var importLength = [];
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var match;
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while (match = importRegEx.exec(css)) {
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var importUrl = match[4] || match[5] || match[7] || match[8] || match[9];
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// normalize import url
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if (importUrl.substr(importUrl.length - 5, 5) != '.less' && importUrl.substr(importUrl.length - 4, 4) != '.css')
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importUrl += '.css';
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// contains a protocol
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if (importUrl.match(/:\/\//))
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continue;
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// relative to css base
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if (importUrl.substr(0, 1) == '/' && cssBase)
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importUrl = cssBase + importUrl;
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else
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importUrl = baseUrl + importUrl;
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importUrls.push(importUrl);
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importIndex.push(importRegEx.lastIndex - match[0].length);
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importLength.push(match[0].length);
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}
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// load the import stylesheets and substitute into the css
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for (var i = 0; i < importUrls.length; i++)
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(function(i) {
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var importCSS = loadCSSFile(importUrls[i]);
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css = css.substr(0, importIndex[i]) + importCSS + css.substr(importIndex[i] + importLength[i]);
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var lenDiff = importCSS.length - importLength[i];
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for (var j = i + 1; j < importUrls.length; j++)
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importIndex[j] += lenDiff;
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})(i);
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return css;
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}
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var baseUrl;
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var cssBase;
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var curModule;
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cssAPI.load = function(name, req, load, config, parse) {
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if (!baseUrl)
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baseUrl = config.baseUrl;
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if (!cssBase)
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cssBase = config.cssBase;
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if (config.modules) {
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//run through the module list - the first one without a layer set is the current layer we are in
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//allows to track the current layer number for layer-specific config
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for (var i = 0; i < config.modules.length; i++)
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if (config.modules[i].layer === undefined) {
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curModule = i;
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break;
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}
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}
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//store config
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cssAPI.config = cssAPI.config || config;
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name += !parse ? '.css' : '.less';
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var fileUrl = req.toUrl(name);
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//external URLS don't get added (just like JS requires)
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if (fileUrl.substr(0, 7) == 'http://' || fileUrl.substr(0, 8) == 'https://')
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return load();
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//add to the buffer
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_cssBuffer[name] = loadCSSFile(fileUrl);
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// parse if necessary
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if (parse)
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_cssBuffer[name] = parse(_cssBuffer[name]);
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load();
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}
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cssAPI.normalize = function(name, normalize) {
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if (name.substr(name.length - 4, 4) == '.css')
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name = name.substr(0, name.length - 4);
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return normalize(name);
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}
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//list of cssIds included in this layer
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var _layerBuffer = [];
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var _cssBuffer = [];
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cssAPI.write = function(pluginName, moduleName, write, parse) {
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//external URLS don't get added (just like JS requires)
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if (moduleName.substr(0, 7) == 'http://' || moduleName.substr(0, 8) == 'https://' || moduleName.substr(0, 2) == '//')
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return;
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var resourceName = moduleName + (!parse ? '.css' : '.less');
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_layerBuffer.push(_cssBuffer[resourceName]);
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var separateCSS = false;
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if (cssAPI.config.separateCSS)
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separateCSS = true;
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if (typeof curModule == 'number' && cssAPI.config.modules[curModule].separateCSS !== undefined)
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separateCSS = cssAPI.config.modules[curModule].separateCSS;
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if (separateCSS)
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write.asModule(pluginName + '!' + moduleName, 'define(function(){})');
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else
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write("requirejs.s.contexts._.nextTick = function(f){f()}; require(['css'], function(css) { css.addBuffer('" + resourceName + "'); }); requirejs.s.contexts._.nextTick = requirejs.nextTick;");
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}
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cssAPI.onLayerEnd = function(write, data, parser) {
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firstWrite = true;
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//separateCSS parameter set either globally or as a layer setting
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var separateCSS = false;
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if (cssAPI.config.separateCSS)
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separateCSS = true;
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if (typeof curModule == 'number' && cssAPI.config.modules[curModule].separateCSS !== undefined)
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separateCSS = cssAPI.config.modules[curModule].separateCSS;
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curModule = null;
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//calculate layer css
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var css = _layerBuffer.join('');
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if (separateCSS) {
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nodePrint('Writing CSS! file: ' + data.name + '\n');
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//calculate the css output path for this layer
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var path = this.config.appDir ? this.config.baseUrl + data.name + '.css' : cssAPI.config.out.replace(/\.js$/, '.css');
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//renormalize the css to the output path
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var output = compress(normalize(css, baseUrl, path));
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saveFile(path, output);
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}
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else {
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if (css == '')
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return;
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//write the injection and layer index into the layer
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//prepare the css
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css = escape(compress(css));
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//the code below overrides async require functionality to ensure instant buffer injection
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write("requirejs.s.contexts._.nextTick = function(f){f()}; require(['css'], function(css) { css.setBuffer('" + css + (parser ? "', true" : "'") + "); }); requirejs.s.contexts._.nextTick = requirejs.nextTick; ");
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}
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//clear layer buffer for next layer
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_layerBuffer = [];
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}
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return cssAPI;
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});
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