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120 lines
3.4 KiB
120 lines
3.4 KiB
2 years ago
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'use strict';
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var Promise = require('bluebird');
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var buffer = require('vinyl-buffer');
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function isStream(obj) {
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return obj && typeof obj.pipe === 'function' && typeof obj.on === 'function';
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}
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/**
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* Takes the src property of the task configuration and deeply "resolves" any vinyl file stream in it by turning
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* it into a string.
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*
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* This function doesn't change the "arborescence" of the given value: all the forms with strings accepted
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* work with vinyl file streams.
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*
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* @returns {Promise}
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*/
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function resolveSrcString(srcProperty) {
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if (Array.isArray(srcProperty)) {
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// handle multiple tag replacement
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return Promise.all(srcProperty.map(function (item) {
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return resolveSrcString(item);
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}));
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} else if (isStream(srcProperty)) {
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return new Promise(function (resolve, reject) {
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var strings = [];
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srcProperty.pipe(buffer())
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.on('data', function (file) {
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strings.push(file.contents.toString());
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})
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.on('error', function(error) {
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reject(error);
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this.end();
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})
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.once('end', function () {
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resolve(strings);
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});
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});
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} else {
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return Promise.resolve(srcProperty);
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}
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}
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module.exports = {
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/**
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* tasks = {
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* 'task-name': {
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* 'src': [file1, file2],
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* 'tpl': '<script src="%s"></script>'
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* },
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* ....
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* }
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**/
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parseTasks: function (options) {
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options = options || {};
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var utilExtensions = /%f|%e/g;
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var tasksByNames = {};
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var tasksPromises = Object.keys(options).map(function (name) {
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var task = {
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src: [],
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tpl: null,
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uni: {},
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srcIsNull: false
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};
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return Promise
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.resolve()
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.then(function () {
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var item = options[name];
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var src = typeof item.src !== 'undefined' ? item.src : item;
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return resolveSrcString(src)
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.then(function(srcStrings) {
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task.srcIsNull = srcStrings === null;
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task.src = task.src.concat(srcStrings);
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task.tpl = item.tpl;
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});
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})
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.then(function () {
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var result;
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while (result = utilExtensions.exec(task.tpl)) {
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var type = result[0];
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var unique = {};
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if (task.uni[type]) {
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continue;
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}
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unique.regex = new RegExp(result[0], "g");
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unique.value = null;
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task.uni[type] = unique;
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}
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})
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.then(function () {
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tasksByNames[name] = task;
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});
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});
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return Promise.all(tasksPromises)
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.then(function() {
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return tasksByNames;
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});
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},
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regexMatchAll: function (string, regexp) {
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var matches = [];
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string.replace(regexp, function () {
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var arr = Array.prototype.slice.call(arguments);
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matches.push(arr);
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});
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return matches;
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}
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};
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