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/** * * showdown: https://github.com/showdownjs/showdown * * author: Di (微信小程序开发工程师) * organization: WeAppDev(微信小程序开发论坛)(http://weappdev.com) * 垂直微信小程序开发交流社区 * * github地址: https://github.com/icindy/wxParse * * for: 微信小程序富文本解析 * detail : http://weappdev.com/t/wxparse-alpha0-1-html-markdown/184 */ function getDefaultOpts(simple) { 'use strict'; var defaultOptions = { omitExtraWLInCodeBlocks: { defaultValue: false, describe: 'Omit the default extra whiteline added to code blocks', type: 'boolean' }, noHeaderId: { defaultValue: false, describe: 'Turn on/off generated header id', type: 'boolean' }, prefixHeaderId: { defaultValue: false, describe: 'Specify a prefix to generated header ids', type: 'string' }, headerLevelStart: { defaultValue: false, describe: 'The header blocks level start', type: 'integer' }, parseImgDimensions: { defaultValue: false, describe: 'Turn on/off image dimension parsing', type: 'boolean' }, simplifiedAutoLink: { defaultValue: false, describe: 'Turn on/off GFM autolink style', type: 'boolean' }, literalMidWordUnderscores: { defaultValue: false, describe: 'Parse midword underscores as literal underscores', type: 'boolean' }, strikethrough: { defaultValue: false, describe: 'Turn on/off strikethrough support', type: 'boolean' }, tables: { defaultValue: false, describe: 'Turn on/off tables support', type: 'boolean' }, tablesHeaderId: { defaultValue: false, describe: 'Add an id to table headers', type: 'boolean' }, ghCodeBlocks: { defaultValue: true, describe: 'Turn on/off GFM fenced code blocks support', type: 'boolean' }, tasklists: { defaultValue: false, describe: 'Turn on/off GFM tasklist support', type: 'boolean' }, smoothLivePreview: { defaultValue: false, describe: 'Prevents weird effects in live previews due to incomplete input', type: 'boolean' }, smartIndentationFix: { defaultValue: false, description: 'Tries to smartly fix identation in es6 strings', type: 'boolean' } }; if (simple === false) { return JSON.parse(JSON.stringify(defaultOptions)); } var ret = {}; for (var opt in defaultOptions) { if (defaultOptions.hasOwnProperty(opt)) { ret[opt] = defaultOptions[opt].defaultValue; } } return ret; } /** * Created by Tivie on 06-01-2015. */ // Private properties var showdown = {}, parsers = {}, extensions = {}, globalOptions = getDefaultOpts(true), flavor = { github: { omitExtraWLInCodeBlocks: true, prefixHeaderId: 'user-content-', simplifiedAutoLink: true, literalMidWordUnderscores: true, strikethrough: true, tables: true, tablesHeaderId: true, ghCodeBlocks: true, tasklists: true }, vanilla: getDefaultOpts(true) }; /** * helper namespace * @type {{}} */ showdown.helper = {}; /** * TODO LEGACY SUPPORT CODE * @type {{}} */ showdown.extensions = {}; /** * Set a global option * @static * @param {string} key * @param {*} value * @returns {showdown} */ showdown.setOption = function (key, value) { 'use strict'; globalOptions[key] = value; return this; }; /** * Get a global option * @static * @param {string} key * @returns {*} */ showdown.getOption = function (key) { 'use strict'; return globalOptions[key]; }; /** * Get the global options * @static * @returns {{}} */ showdown.getOptions = function () { 'use strict'; return globalOptions; }; /** * Reset global options to the default values * @static */ showdown.resetOptions = function () { 'use strict'; globalOptions = getDefaultOpts(true); }; /** * Set the flavor showdown should use as default * @param {string} name */ showdown.setFlavor = function (name) { 'use strict'; if (flavor.hasOwnProperty(name)) { var preset = flavor[name]; for (var option in preset) { if (preset.hasOwnProperty(option)) { globalOptions[option] = preset[option]; } } } }; /** * Get the default options * @static * @param {boolean} [simple=true] * @returns {{}} */ showdown.getDefaultOptions = function (simple) { 'use strict'; return getDefaultOpts(simple); }; /** * Get or set a subParser * * subParser(name) - Get a registered subParser * subParser(name, func) - Register a subParser * @static * @param {string} name * @param {function} [func] * @returns {*} */ showdown.subParser = function (name, func) { 'use strict'; if (showdown.helper.isString(name)) { if (typeof func !== 'undefined') { parsers[name] = func; } else { if (parsers.hasOwnProperty(name)) { return parsers[name]; } else { throw Error('SubParser named ' + name + ' not registered!'); } } } }; /** * Gets or registers an extension * @static * @param {string} name * @param {object|function=} ext * @returns {*} */ showdown.extension = function (name, ext) { 'use strict'; if (!showdown.helper.isString(name)) { throw Error('Extension \'name\' must be a string'); } name = showdown.helper.stdExtName(name); // Getter if (showdown.helper.isUndefined(ext)) { if (!extensions.hasOwnProperty(name)) { throw Error('Extension named ' + name + ' is not registered!'); } return extensions[name]; // Setter } else { // Expand extension if it's wrapped in a function if (typeof ext === 'function') { ext = ext(); } // Ensure extension is an array if (!showdown.helper.isArray(ext)) { ext = [ext]; } var validExtension = validate(ext, name); if (validExtension.valid) { extensions[name] = ext; } else { throw Error(validExtension.error); } } }; /** * Gets all extensions registered * @returns {{}} */ showdown.getAllExtensions = function () { 'use strict'; return extensions; }; /** * Remove an extension * @param {string} name */ showdown.removeExtension = function (name) { 'use strict'; delete extensions[name]; }; /** * Removes all extensions */ showdown.resetExtensions = function () { 'use strict'; extensions = {}; }; /** * Validate extension * @param {array} extension * @param {string} name * @returns {{valid: boolean, error: string}} */ function validate(extension, name) { 'use strict'; var errMsg = (name) ? 'Error in ' + name + ' extension->' : 'Error in unnamed extension', ret = { valid: true, error: '' }; if (!showdown.helper.isArray(extension)) { extension = [extension]; } for (var i = 0; i < extension.length; ++i) { var baseMsg = errMsg + ' sub-extension ' + i + ': ', ext = extension[i]; if (typeof ext !== 'object') { ret.valid = false; ret.error = baseMsg + 'must be an object, but ' + typeof ext + ' given'; return ret; } if (!showdown.helper.isString(ext.type)) { ret.valid = false; ret.error = baseMsg + 'property "type" must be a string, but ' + typeof ext.type + ' given'; return ret; } var type = ext.type = ext.type.toLowerCase(); // normalize extension type if (type === 'language') { type = ext.type = 'lang'; } if (type === 'html') { type = ext.type = 'output'; } if (type !== 'lang' && type !== 'output' && type !== 'listener') { ret.valid = false; ret.error = baseMsg + 'type ' + type + ' is not recognized. Valid values: "lang/language", "output/html" or "listener"'; return ret; }