--- /dev/null
+'use strict';
+
+var promise = require('bluebird'),
+ isHTML = require('is-html'),
+ isURL = require('is-absolute-url'),
+ os = require('os'),
+ path = require('path'),
+ url = require('url');
+
+var fs = promise.promisifyAll(require('fs'), { multiArgs: true }),
+ request = promise.promisify(require('request'), { multiArgs: true });
+
+function isWindows() {
+ return os.platform() === 'win32';
+}
+
+/**
+ * Check if the supplied string might be a RegExp and, if so, return the corresponding RegExp.
+ * @param {String} str The regex to transform.
+ * @return {RegExp|String} The final RegExp
+ */
+function strToRegExp(str) {
+ if (str[0] === '/') {
+ return new RegExp(str.replace(/^\/|\/$/g, ''));
+ }
+ return str;
+}
+
+/**
+ * Parse a given uncssrc file.
+ * @param {String} filename The location of the uncssrc file
+ * @return {Object} The options object
+ */
+function parseUncssrc(filename) {
+ var options = JSON.parse(fs.readFileSync(filename, 'utf-8'));
+
+ /* RegExps can't be stored as JSON, therefore we need to parse them manually.
+ * A string is a RegExp if it starts with '/', since that wouldn't be a valid CSS selector.
+ */
+ options.ignore = options.ignore ? options.ignore.map(strToRegExp) : undefined;
+ options.ignoreSheets = options.ignoreSheets ? options.ignoreSheets.map(strToRegExp) : undefined;
+
+ return options;
+}
+
+/**
+ * Parse paths relatives to a source.
+ * @param {String} source Where the paths originate from
+ * @param {Array} stylesheets List of paths
+ * @param {Object} options Options, as passed to UnCSS
+ * @return {Array} List of paths
+ */
+function parsePaths(source, stylesheets, options) {
+ return stylesheets.map(function (sheet) {
+ var sourceProtocol;
+
+ if (sheet.substr(0, 4) === 'http') {
+ /* No need to parse, it's already a valid path */
+ return sheet;
+ }
+
+ /* Check if we are fetching over http(s) */
+ if (isURL(source)) {
+ sourceProtocol = url.parse(source).protocol;
+
+ if (sheet.substr(0, 2) === '//') {
+ /* Use the same protocol we used for fetching this page.
+ * Default to http.
+ */
+ return sourceProtocol ? sourceProtocol + sheet : 'http:' + sheet;
+ }
+ return url.resolve(source, sheet);
+ }
+
+ /* We are fetching local files
+ * Should probably report an error if we find an absolute path and
+ * have no htmlroot specified.
+ */
+ /* Fix the case when there is a query string or hash */
+ sheet = sheet.split('?')[0].split('#')[0];
+
+ /* Path already parsed by PhantomJS */
+ if (sheet.substr(0, 5) === 'file:') {
+ sheet = url.parse(sheet).path.replace('%20', ' ');
+ /* If on windows, remove first '/' */
+ sheet = isWindows() ? sheet.substring(1) : sheet;
+
+ if (options.htmlroot) {
+ return path.join(options.htmlroot, sheet);
+ }
+ sheet = path.relative(path.join(path.dirname(source)), sheet);
+ }
+
+ if (sheet[0] === '/' && options.htmlroot) {
+ return path.join(options.htmlroot, sheet);
+ } else if (isHTML(source)) {
+ return path.join(options.csspath, sheet);
+ }
+ return path.join(path.dirname(source), options.csspath, sheet);
+ });
+}
+
+/**
+ * Given an array of filenames, return an array of the files' contents,
+ * only if the filename matches a regex
+ * @param {Array} files An array of the filenames to read
+ * @return {promise}
+ */
+function readStylesheets(files) {
+ return promise.map(files, function (filename) {
+ if (isURL(filename)) {
+ return request({
+ url: filename,
+ headers: { 'User-Agent': 'UnCSS' }
+ }).spread(function (response, body) {
+ return body;
+ });
+ } else if (fs.existsSync(filename)) {
+ return fs.readFileAsync(filename, 'utf-8').then(function (contents) {
+ return contents;
+ });
+ }
+ throw new Error('UnCSS: could not open ' + path.join(process.cwd(), filename));
+ }).then(function (res) {
+ // res is an array of the content of each file in files (in the same order)
+ for (var i = 0, len = files.length; i < len; i++) {
+ // We append a small banner to keep track of which file we are currently processing
+ // super helpful for debugging
+ var banner = '/*** uncss> filename: ' + files[i].replace(/\\/g, '/') + ' ***/\n';
+ res[i] = banner + res[i];
+ }
+ return res;
+ });
+}
+
+function parseErrorMessage(error, cssStr) {
+ /* TODO: FIXME */
+ /* Base line for conveying the line number in the error message */
+ var zeroLine = 0;
+
+ if (error.line) {
+ var lines = cssStr.split('\n');
+ if (lines.length) {
+ /* We get the filename of the css file that contains the error */
+ var i = error.line - 1;
+ while (i >= 0 && !error.filename) {
+ if (lines[i].substr(0, 21) === '/*** uncss> filename:') {
+ error.filename = lines[i].substring(22, lines[i].length - 4);
+ zeroLine = i;
+ }
+ i--;
+ }
+ for (var j = error.line - 6; j < error.line + 5; j++) {
+ if (j - zeroLine < 0 || j >= lines.length) {
+ continue;
+ }
+ var line = lines[j];
+ /* It could be minified CSS */
+ if (line.length > 120 && error.column) {
+ line = line.substring(error.column - 40, error.column);
+ }
+ error.message += '\n\t' + (j + 1 - zeroLine) + ': ';
+ error.message += j === error.line - 1 ? ' -> ' : ' ';
+ error.message += line;
+ }
+ }
+ }
+ if (zeroLine > 0) {
+ error.message = error.message.replace(/[0-9]+:/, error.line - zeroLine + ':');
+ }
+ error.message = 'uncss/node_modules/css: unable to parse ' + error.filename + ':\n' + error.message + '\n';
+ return error;
+}
+
+module.exports = {
+ isWindows: isWindows,
+ parseUncssrc: parseUncssrc,
+ parseErrorMessage: parseErrorMessage,
+ parsePaths: parsePaths,
+ readStylesheets: readStylesheets
+};
projects / yaffs-website / blobdiff