mirror of
https://github.com/showdownjs/showdown.git
synced 2024-03-22 13:30:55 +08:00
0eaf1050c7
With this new method, you can check what type of base flavor showdown is currently set to run as.
2603 lines
74 KiB
JavaScript
2603 lines
74 KiB
JavaScript
;/*! showdown 08-01-2017 */
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(function(){
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/**
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* Created by Tivie on 13-07-2015.
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*/
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function getDefaultOpts(simple) {
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'use strict';
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var defaultOptions = {
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omitExtraWLInCodeBlocks: {
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defaultValue: false,
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describe: 'Omit the default extra whiteline added to code blocks',
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type: 'boolean'
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},
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noHeaderId: {
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defaultValue: false,
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describe: 'Turn on/off generated header id',
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type: 'boolean'
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},
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prefixHeaderId: {
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defaultValue: false,
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describe: 'Specify a prefix to generated header ids',
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type: 'string'
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},
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ghCompatibleHeaderId: {
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defaultValue: false,
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describe: 'Generate header ids compatible with github style (spaces are replaced with dashes, a bunch of non alphanumeric chars are removed)',
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type: 'boolean'
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},
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headerLevelStart: {
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defaultValue: false,
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describe: 'The header blocks level start',
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type: 'integer'
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},
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parseImgDimensions: {
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defaultValue: false,
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describe: 'Turn on/off image dimension parsing',
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type: 'boolean'
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},
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simplifiedAutoLink: {
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defaultValue: false,
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describe: 'Turn on/off GFM autolink style',
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type: 'boolean'
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},
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excludeTrailingPunctuationFromURLs: {
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defaultValue: false,
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describe: 'Excludes trailing punctuation from links generated with autoLinking',
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type: 'boolean'
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},
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literalMidWordUnderscores: {
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defaultValue: false,
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describe: 'Parse midword underscores as literal underscores',
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type: 'boolean'
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},
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strikethrough: {
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defaultValue: false,
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describe: 'Turn on/off strikethrough support',
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type: 'boolean'
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},
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tables: {
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defaultValue: false,
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describe: 'Turn on/off tables support',
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type: 'boolean'
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},
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tablesHeaderId: {
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defaultValue: false,
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describe: 'Add an id to table headers',
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type: 'boolean'
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},
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ghCodeBlocks: {
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defaultValue: true,
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describe: 'Turn on/off GFM fenced code blocks support',
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type: 'boolean'
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},
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tasklists: {
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defaultValue: false,
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describe: 'Turn on/off GFM tasklist support',
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type: 'boolean'
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},
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smoothLivePreview: {
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defaultValue: false,
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describe: 'Prevents weird effects in live previews due to incomplete input',
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type: 'boolean'
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},
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smartIndentationFix: {
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defaultValue: false,
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description: 'Tries to smartly fix indentation in es6 strings',
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type: 'boolean'
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},
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disableForced4SpacesIndentedSublists: {
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defaultValue: false,
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description: 'Disables the requirement of indenting nested sublists by 4 spaces',
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type: 'boolean'
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},
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simpleLineBreaks: {
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defaultValue: false,
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description: 'Parses simple line breaks as <br> (GFM Style)',
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type: 'boolean'
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},
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requireSpaceBeforeHeadingText: {
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defaultValue: false,
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description: 'Makes adding a space between `#` and the header text mandatory (GFM Style)',
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type: 'boolean'
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},
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ghMentions: {
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defaultValue: false,
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description: 'Enables github @mentions',
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type: 'boolean'
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}
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};
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if (simple === false) {
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return JSON.parse(JSON.stringify(defaultOptions));
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}
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var ret = {};
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for (var opt in defaultOptions) {
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if (defaultOptions.hasOwnProperty(opt)) {
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ret[opt] = defaultOptions[opt].defaultValue;
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}
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}
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return ret;
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}
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function allOptionsOn() {
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'use strict';
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var options = getDefaultOpts(true),
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ret = {};
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for (var opt in options) {
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if (options.hasOwnProperty(opt)) {
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ret[opt] = true;
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}
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}
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return ret;
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}
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/**
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* Created by Tivie on 06-01-2015.
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*/
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// Private properties
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var showdown = {},
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parsers = {},
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extensions = {},
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globalOptions = getDefaultOpts(true),
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setFlavor = 'vanilla',
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flavor = {
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github: {
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omitExtraWLInCodeBlocks: true,
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prefixHeaderId: 'user-content-',
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simplifiedAutoLink: true,
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excludeTrailingPunctuationFromURLs: true,
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literalMidWordUnderscores: true,
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strikethrough: true,
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tables: true,
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tablesHeaderId: true,
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ghCodeBlocks: true,
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tasklists: true,
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disableForced4SpacesIndentedSublists: true,
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simpleLineBreaks: true,
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requireSpaceBeforeHeadingText: true,
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ghCompatibleHeaderId: true,
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ghMentions: true
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},
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vanilla: getDefaultOpts(true),
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allOn: allOptionsOn()
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};
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/**
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* helper namespace
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* @type {{}}
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*/
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showdown.helper = {};
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/**
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* TODO LEGACY SUPPORT CODE
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* @type {{}}
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*/
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showdown.extensions = {};
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/**
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* Set a global option
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* @static
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* @param {string} key
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* @param {*} value
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* @returns {showdown}
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*/
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showdown.setOption = function (key, value) {
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'use strict';
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globalOptions[key] = value;
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return this;
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};
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/**
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* Get a global option
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* @static
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* @param {string} key
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* @returns {*}
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*/
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showdown.getOption = function (key) {
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'use strict';
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return globalOptions[key];
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};
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/**
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* Get the global options
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* @static
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* @returns {{}}
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*/
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showdown.getOptions = function () {
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'use strict';
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return globalOptions;
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};
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/**
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* Reset global options to the default values
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* @static
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*/
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showdown.resetOptions = function () {
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'use strict';
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globalOptions = getDefaultOpts(true);
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};
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/**
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* Set the flavor showdown should use as default
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* @param {string} name
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*/
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showdown.setFlavor = function (name) {
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'use strict';
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if (!flavor.hasOwnProperty(name)) {
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throw Error(name + ' flavor was not found');
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}
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var preset = flavor[name];
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setFlavor = name;
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for (var option in preset) {
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if (preset.hasOwnProperty(option)) {
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globalOptions[option] = preset[option];
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}
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}
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};
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/**
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* Get the currently set flavor
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* @returns {string}
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*/
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showdown.getFlavor = function () {
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'use strict';
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return setFlavor;
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};
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/**
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* Get the options of a specified flavor. Returns undefined if the flavor was not found
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* @param {string} name Name of the flavor
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* @returns {{}|undefined}
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*/
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showdown.getFlavorOptions = function (name) {
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'use strict';
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if (flavor.hasOwnProperty(name)) {
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return flavor[name];
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}
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};
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/**
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* Get the default options
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* @static
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* @param {boolean} [simple=true]
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* @returns {{}}
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*/
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showdown.getDefaultOptions = function (simple) {
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'use strict';
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return getDefaultOpts(simple);
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};
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/**
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* Get or set a subParser
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*
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* subParser(name) - Get a registered subParser
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* subParser(name, func) - Register a subParser
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* @static
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* @param {string} name
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* @param {function} [func]
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* @returns {*}
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*/
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showdown.subParser = function (name, func) {
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'use strict';
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if (showdown.helper.isString(name)) {
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if (typeof func !== 'undefined') {
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parsers[name] = func;
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} else {
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if (parsers.hasOwnProperty(name)) {
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return parsers[name];
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} else {
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throw Error('SubParser named ' + name + ' not registered!');
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}
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}
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}
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};
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/**
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* Gets or registers an extension
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* @static
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* @param {string} name
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* @param {object|function=} ext
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* @returns {*}
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*/
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showdown.extension = function (name, ext) {
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'use strict';
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if (!showdown.helper.isString(name)) {
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throw Error('Extension \'name\' must be a string');
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}
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name = showdown.helper.stdExtName(name);
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// Getter
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if (showdown.helper.isUndefined(ext)) {
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if (!extensions.hasOwnProperty(name)) {
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throw Error('Extension named ' + name + ' is not registered!');
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}
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return extensions[name];
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// Setter
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} else {
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// Expand extension if it's wrapped in a function
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if (typeof ext === 'function') {
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ext = ext();
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}
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// Ensure extension is an array
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if (!showdown.helper.isArray(ext)) {
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ext = [ext];
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}
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var validExtension = validate(ext, name);
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if (validExtension.valid) {
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extensions[name] = ext;
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} else {
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throw Error(validExtension.error);
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}
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}
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};
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/**
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* Gets all extensions registered
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* @returns {{}}
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*/
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showdown.getAllExtensions = function () {
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'use strict';
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return extensions;
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};
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/**
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* Remove an extension
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* @param {string} name
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*/
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showdown.removeExtension = function (name) {
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'use strict';
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delete extensions[name];
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};
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/**
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* Removes all extensions
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*/
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showdown.resetExtensions = function () {
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'use strict';
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extensions = {};
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};
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/**
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* Validate extension
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* @param {array} extension
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* @param {string} name
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* @returns {{valid: boolean, error: string}}
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*/
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function validate(extension, name) {
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'use strict';
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var errMsg = (name) ? 'Error in ' + name + ' extension->' : 'Error in unnamed extension',
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ret = {
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valid: true,
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error: ''
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};
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if (!showdown.helper.isArray(extension)) {
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extension = [extension];
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}
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for (var i = 0; i < extension.length; ++i) {
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var baseMsg = errMsg + ' sub-extension ' + i + ': ',
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ext = extension[i];
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if (typeof ext !== 'object') {
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ret.valid = false;
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ret.error = baseMsg + 'must be an object, but ' + typeof ext + ' given';
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return ret;
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}
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if (!showdown.helper.isString(ext.type)) {
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ret.valid = false;
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ret.error = baseMsg + 'property "type" must be a string, but ' + typeof ext.type + ' given';
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return ret;
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}
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var type = ext.type = ext.type.toLowerCase();
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// normalize extension type
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if (type === 'language') {
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type = ext.type = 'lang';
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}
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if (type === 'html') {
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type = ext.type = 'output';
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}
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if (type !== 'lang' && type !== 'output' && type !== 'listener') {
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ret.valid = false;
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ret.error = baseMsg + 'type ' + type + ' is not recognized. Valid values: "lang/language", "output/html" or "listener"';
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return ret;
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}
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if (type === 'listener') {
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if (showdown.helper.isUndefined(ext.listeners)) {
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ret.valid = false;
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ret.error = baseMsg + '. Extensions of type "listener" must have a property called "listeners"';
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return ret;
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}
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} else {
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if (showdown.helper.isUndefined(ext.filter) && showdown.helper.isUndefined(ext.regex)) {
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ret.valid = false;
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ret.error = baseMsg + type + ' extensions must define either a "regex" property or a "filter" method';
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return ret;
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}
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}
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if (ext.listeners) {
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if (typeof ext.listeners !== 'object') {
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ret.valid = false;
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ret.error = baseMsg + '"listeners" property must be an object but ' + typeof ext.listeners + ' given';
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return ret;
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}
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for (var ln in ext.listeners) {
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if (ext.listeners.hasOwnProperty(ln)) {
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if (typeof ext.listeners[ln] !== 'function') {
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ret.valid = false;
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ret.error = baseMsg + '"listeners" property must be an hash of [event name]: [callback]. listeners.' + ln +
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' must be a function but ' + typeof ext.listeners[ln] + ' given';
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return ret;
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}
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}
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}
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}
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if (ext.filter) {
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if (typeof ext.filter !== 'function') {
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ret.valid = false;
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ret.error = baseMsg + '"filter" must be a function, but ' + typeof ext.filter + ' given';
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return ret;
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}
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} else if (ext.regex) {
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if (showdown.helper.isString(ext.regex)) {
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ext.regex = new RegExp(ext.regex, 'g');
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}
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if (!ext.regex instanceof RegExp) {
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ret.valid = false;
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ret.error = baseMsg + '"regex" property must either be a string or a RegExp object, but ' + typeof ext.regex + ' given';
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return ret;
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}
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if (showdown.helper.isUndefined(ext.replace)) {
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ret.valid = false;
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ret.error = baseMsg + '"regex" extensions must implement a replace string or function';
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return ret;
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}
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}
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}
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return ret;
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}
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/**
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* Validate extension
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* @param {object} ext
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* @returns {boolean}
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*/
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showdown.validateExtension = function (ext) {
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'use strict';
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var validateExtension = validate(ext, null);
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if (!validateExtension.valid) {
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console.warn(validateExtension.error);
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return false;
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}
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return true;
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};
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/**
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* showdownjs helper functions
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*/
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if (!showdown.hasOwnProperty('helper')) {
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showdown.helper = {};
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}
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/**
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* Check if var is string
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* @static
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* @param {string} a
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* @returns {boolean}
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*/
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showdown.helper.isString = function isString(a) {
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'use strict';
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return (typeof a === 'string' || a instanceof String);
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};
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/**
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* Check if var is a function
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* @static
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* @param {string} a
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* @returns {boolean}
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*/
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showdown.helper.isFunction = function isFunction(a) {
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'use strict';
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var getType = {};
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return a && getType.toString.call(a) === '[object Function]';
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};
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/**
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* ForEach helper function
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* @static
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* @param {*} obj
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* @param {function} callback
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*/
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showdown.helper.forEach = function forEach(obj, callback) {
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'use strict';
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if (typeof obj.forEach === 'function') {
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obj.forEach(callback);
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} else {
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for (var i = 0; i < obj.length; i++) {
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callback(obj[i], i, obj);
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}
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}
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};
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/**
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* isArray helper function
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* @static
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* @param {*} a
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* @returns {boolean}
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*/
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showdown.helper.isArray = function isArray(a) {
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'use strict';
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return a.constructor === Array;
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};
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/**
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* Check if value is undefined
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* @static
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
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*/
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showdown.helper.isUndefined = function isUndefined(value) {
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'use strict';
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return typeof value === 'undefined';
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};
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/**
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* Standardidize extension name
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* @static
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* @param {string} s extension name
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* @returns {string}
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*/
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showdown.helper.stdExtName = function (s) {
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'use strict';
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return s.replace(/[_-]||\s/g, '').toLowerCase();
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};
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function escapeCharactersCallback(wholeMatch, m1) {
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'use strict';
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var charCodeToEscape = m1.charCodeAt(0);
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return '~E' + charCodeToEscape + 'E';
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}
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/**
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* Callback used to escape characters when passing through String.replace
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* @static
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* @param {string} wholeMatch
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* @param {string} m1
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* @returns {string}
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*/
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showdown.helper.escapeCharactersCallback = escapeCharactersCallback;
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|
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/**
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* Escape characters in a string
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* @static
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* @param {string} text
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* @param {string} charsToEscape
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* @param {boolean} afterBackslash
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* @returns {XML|string|void|*}
|
|
*/
|
|
showdown.helper.escapeCharacters = function escapeCharacters(text, charsToEscape, afterBackslash) {
|
|
'use strict';
|
|
// First we have to escape the escape characters so that
|
|
// we can build a character class out of them
|
|
var regexString = '([' + charsToEscape.replace(/([\[\]\\])/g, '\\$1') + '])';
|
|
|
|
if (afterBackslash) {
|
|
regexString = '\\\\' + regexString;
|
|
}
|
|
|
|
var regex = new RegExp(regexString, 'g');
|
|
text = text.replace(regex, escapeCharactersCallback);
|
|
|
|
return text;
|
|
};
|
|
|
|
var rgxFindMatchPos = function (str, left, right, flags) {
|
|
'use strict';
|
|
var f = flags || '',
|
|
g = f.indexOf('g') > -1,
|
|
x = new RegExp(left + '|' + right, 'g' + f.replace(/g/g, '')),
|
|
l = new RegExp(left, f.replace(/g/g, '')),
|
|
pos = [],
|
|
t, s, m, start, end;
|
|
|
|
do {
|
|
t = 0;
|
|
while ((m = x.exec(str))) {
|
|
if (l.test(m[0])) {
|
|
if (!(t++)) {
|
|
s = x.lastIndex;
|
|
start = s - m[0].length;
|
|
}
|
|
} else if (t) {
|
|
if (!--t) {
|
|
end = m.index + m[0].length;
|
|
var obj = {
|
|
left: {start: start, end: s},
|
|
match: {start: s, end: m.index},
|
|
right: {start: m.index, end: end},
|
|
wholeMatch: {start: start, end: end}
|
|
};
|
|
pos.push(obj);
|
|
if (!g) {
|
|
return pos;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} while (t && (x.lastIndex = s));
|
|
|
|
return pos;
|
|
};
|
|
|
|
/**
|
|
* matchRecursiveRegExp
|
|
*
|
|
* (c) 2007 Steven Levithan <stevenlevithan.com>
|
|
* MIT License
|
|
*
|
|
* Accepts a string to search, a left and right format delimiter
|
|
* as regex patterns, and optional regex flags. Returns an array
|
|
* of matches, allowing nested instances of left/right delimiters.
|
|
* Use the "g" flag to return all matches, otherwise only the
|
|
* first is returned. Be careful to ensure that the left and
|
|
* right format delimiters produce mutually exclusive matches.
|
|
* Backreferences are not supported within the right delimiter
|
|
* due to how it is internally combined with the left delimiter.
|
|
* When matching strings whose format delimiters are unbalanced
|
|
* to the left or right, the output is intentionally as a
|
|
* conventional regex library with recursion support would
|
|
* produce, e.g. "<<x>" and "<x>>" both produce ["x"] when using
|
|
* "<" and ">" as the delimiters (both strings contain a single,
|
|
* balanced instance of "<x>").
|
|
*
|
|
* examples:
|
|
* matchRecursiveRegExp("test", "\\(", "\\)")
|
|
* returns: []
|
|
* matchRecursiveRegExp("<t<<e>><s>>t<>", "<", ">", "g")
|
|
* returns: ["t<<e>><s>", ""]
|
|
* matchRecursiveRegExp("<div id=\"x\">test</div>", "<div\\b[^>]*>", "</div>", "gi")
|
|
* returns: ["test"]
|
|
*/
|
|
showdown.helper.matchRecursiveRegExp = function (str, left, right, flags) {
|
|
'use strict';
|
|
|
|
var matchPos = rgxFindMatchPos (str, left, right, flags),
|
|
results = [];
|
|
|
|
for (var i = 0; i < matchPos.length; ++i) {
|
|
results.push([
|
|
str.slice(matchPos[i].wholeMatch.start, matchPos[i].wholeMatch.end),
|
|
str.slice(matchPos[i].match.start, matchPos[i].match.end),
|
|
str.slice(matchPos[i].left.start, matchPos[i].left.end),
|
|
str.slice(matchPos[i].right.start, matchPos[i].right.end)
|
|
]);
|
|
}
|
|
return results;
|
|
};
|
|
|
|
/**
|
|
*
|
|
* @param {string} str
|
|
* @param {string|function} replacement
|
|
* @param {string} left
|
|
* @param {string} right
|
|
* @param {string} flags
|
|
* @returns {string}
|
|
*/
|
|
showdown.helper.replaceRecursiveRegExp = function (str, replacement, left, right, flags) {
|
|
'use strict';
|
|
|
|
if (!showdown.helper.isFunction(replacement)) {
|
|
var repStr = replacement;
|
|
replacement = function () {
|
|
return repStr;
|
|
};
|
|
}
|
|
|
|
var matchPos = rgxFindMatchPos(str, left, right, flags),
|
|
finalStr = str,
|
|
lng = matchPos.length;
|
|
|
|
if (lng > 0) {
|
|
var bits = [];
|
|
if (matchPos[0].wholeMatch.start !== 0) {
|
|
bits.push(str.slice(0, matchPos[0].wholeMatch.start));
|
|
}
|
|
for (var i = 0; i < lng; ++i) {
|
|
bits.push(
|
|
replacement(
|
|
str.slice(matchPos[i].wholeMatch.start, matchPos[i].wholeMatch.end),
|
|
str.slice(matchPos[i].match.start, matchPos[i].match.end),
|
|
str.slice(matchPos[i].left.start, matchPos[i].left.end),
|
|
str.slice(matchPos[i].right.start, matchPos[i].right.end)
|
|
)
|
|
);
|
|
if (i < lng - 1) {
|
|
bits.push(str.slice(matchPos[i].wholeMatch.end, matchPos[i + 1].wholeMatch.start));
|
|
}
|
|
}
|
|
if (matchPos[lng - 1].wholeMatch.end < str.length) {
|
|
bits.push(str.slice(matchPos[lng - 1].wholeMatch.end));
|
|
}
|
|
finalStr = bits.join('');
|
|
}
|
|
return finalStr;
|
|
};
|
|
|
|
/**
|
|
* POLYFILLS
|
|
*/
|
|
// use this instead of builtin is undefined for IE8 compatibility
|
|
if (typeof(console) === 'undefined') {
|
|
console = {
|
|
warn: function (msg) {
|
|
'use strict';
|
|
alert(msg);
|
|
},
|
|
log: function (msg) {
|
|
'use strict';
|
|
alert(msg);
|
|
},
|
|
error: function (msg) {
|
|
'use strict';
|
|
throw msg;
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Created by Estevao on 31-05-2015.
|
|
*/
|
|
|
|
/**
|
|
* Showdown Converter class
|
|
* @class
|
|
* @param {object} [converterOptions]
|
|
* @returns {Converter}
|
|
*/
|
|
showdown.Converter = function (converterOptions) {
|
|
'use strict';
|
|
|
|
var
|
|
/**
|
|
* Options used by this converter
|
|
* @private
|
|
* @type {{}}
|
|
*/
|
|
options = {},
|
|
|
|
/**
|
|
* Language extensions used by this converter
|
|
* @private
|
|
* @type {Array}
|
|
*/
|
|
langExtensions = [],
|
|
|
|
/**
|
|
* Output modifiers extensions used by this converter
|
|
* @private
|
|
* @type {Array}
|
|
*/
|
|
outputModifiers = [],
|
|
|
|
/**
|
|
* Event listeners
|
|
* @private
|
|
* @type {{}}
|
|
*/
|
|
listeners = {},
|
|
|
|
/**
|
|
* The flavor set in this converter
|
|
*/
|
|
setConvFlavor = setFlavor;
|
|
|
|
_constructor();
|
|
|
|
/**
|
|
* Converter constructor
|
|
* @private
|
|
*/
|
|
function _constructor() {
|
|
converterOptions = converterOptions || {};
|
|
|
|
for (var gOpt in globalOptions) {
|
|
if (globalOptions.hasOwnProperty(gOpt)) {
|
|
options[gOpt] = globalOptions[gOpt];
|
|
}
|
|
}
|
|
|
|
// Merge options
|
|
if (typeof converterOptions === 'object') {
|
|
for (var opt in converterOptions) {
|
|
if (converterOptions.hasOwnProperty(opt)) {
|
|
options[opt] = converterOptions[opt];
|
|
}
|
|
}
|
|
} else {
|
|
throw Error('Converter expects the passed parameter to be an object, but ' + typeof converterOptions +
|
|
' was passed instead.');
|
|
}
|
|
|
|
if (options.extensions) {
|
|
showdown.helper.forEach(options.extensions, _parseExtension);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse extension
|
|
* @param {*} ext
|
|
* @param {string} [name='']
|
|
* @private
|
|
*/
|
|
function _parseExtension(ext, name) {
|
|
|
|
name = name || null;
|
|
// If it's a string, the extension was previously loaded
|
|
if (showdown.helper.isString(ext)) {
|
|
ext = showdown.helper.stdExtName(ext);
|
|
name = ext;
|
|
|
|
// LEGACY_SUPPORT CODE
|
|
if (showdown.extensions[ext]) {
|
|
console.warn('DEPRECATION WARNING: ' + ext + ' is an old extension that uses a deprecated loading method.' +
|
|
'Please inform the developer that the extension should be updated!');
|
|
legacyExtensionLoading(showdown.extensions[ext], ext);
|
|
return;
|
|
// END LEGACY SUPPORT CODE
|
|
|
|
} else if (!showdown.helper.isUndefined(extensions[ext])) {
|
|
ext = extensions[ext];
|
|
|
|
} else {
|
|
throw Error('Extension "' + ext + '" could not be loaded. It was either not found or is not a valid extension.');
|
|
}
|
|
}
|
|
|
|
if (typeof ext === 'function') {
|
|
ext = ext();
|
|
}
|
|
|
|
if (!showdown.helper.isArray(ext)) {
|
|
ext = [ext];
|
|
}
|
|
|
|
var validExt = validate(ext, name);
|
|
if (!validExt.valid) {
|
|
throw Error(validExt.error);
|
|
}
|
|
|
|
for (var i = 0; i < ext.length; ++i) {
|
|
switch (ext[i].type) {
|
|
|
|
case 'lang':
|
|
langExtensions.push(ext[i]);
|
|
break;
|
|
|
|
case 'output':
|
|
outputModifiers.push(ext[i]);
|
|
break;
|
|
}
|
|
if (ext[i].hasOwnProperty('listeners')) {
|
|
for (var ln in ext[i].listeners) {
|
|
if (ext[i].listeners.hasOwnProperty(ln)) {
|
|
listen(ln, ext[i].listeners[ln]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* LEGACY_SUPPORT
|
|
* @param {*} ext
|
|
* @param {string} name
|
|
*/
|
|
function legacyExtensionLoading(ext, name) {
|
|
if (typeof ext === 'function') {
|
|
ext = ext(new showdown.Converter());
|
|
}
|
|
if (!showdown.helper.isArray(ext)) {
|
|
ext = [ext];
|
|
}
|
|
var valid = validate(ext, name);
|
|
|
|
if (!valid.valid) {
|
|
throw Error(valid.error);
|
|
}
|
|
|
|
for (var i = 0; i < ext.length; ++i) {
|
|
switch (ext[i].type) {
|
|
case 'lang':
|
|
langExtensions.push(ext[i]);
|
|
break;
|
|
case 'output':
|
|
outputModifiers.push(ext[i]);
|
|
break;
|
|
default:// should never reach here
|
|
throw Error('Extension loader error: Type unrecognized!!!');
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Listen to an event
|
|
* @param {string} name
|
|
* @param {function} callback
|
|
*/
|
|
function listen(name, callback) {
|
|
if (!showdown.helper.isString(name)) {
|
|
throw Error('Invalid argument in converter.listen() method: name must be a string, but ' + typeof name + ' given');
|
|
}
|
|
|
|
if (typeof callback !== 'function') {
|
|
throw Error('Invalid argument in converter.listen() method: callback must be a function, but ' + typeof callback + ' given');
|
|
}
|
|
|
|
if (!listeners.hasOwnProperty(name)) {
|
|
listeners[name] = [];
|
|
}
|
|
listeners[name].push(callback);
|
|
}
|
|
|
|
function rTrimInputText(text) {
|
|
var rsp = text.match(/^\s*/)[0].length,
|
|
rgx = new RegExp('^\\s{0,' + rsp + '}', 'gm');
|
|
return text.replace(rgx, '');
|
|
}
|
|
|
|
/**
|
|
* Dispatch an event
|
|
* @private
|
|
* @param {string} evtName Event name
|
|
* @param {string} text Text
|
|
* @param {{}} options Converter Options
|
|
* @param {{}} globals
|
|
* @returns {string}
|
|
*/
|
|
this._dispatch = function dispatch (evtName, text, options, globals) {
|
|
if (listeners.hasOwnProperty(evtName)) {
|
|
for (var ei = 0; ei < listeners[evtName].length; ++ei) {
|
|
var nText = listeners[evtName][ei](evtName, text, this, options, globals);
|
|
if (nText && typeof nText !== 'undefined') {
|
|
text = nText;
|
|
}
|
|
}
|
|
}
|
|
return text;
|
|
};
|
|
|
|
/**
|
|
* Listen to an event
|
|
* @param {string} name
|
|
* @param {function} callback
|
|
* @returns {showdown.Converter}
|
|
*/
|
|
this.listen = function (name, callback) {
|
|
listen(name, callback);
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Converts a markdown string into HTML
|
|
* @param {string} text
|
|
* @returns {*}
|
|
*/
|
|
this.makeHtml = function (text) {
|
|
//check if text is not falsy
|
|
if (!text) {
|
|
return text;
|
|
}
|
|
|
|
var globals = {
|
|
gHtmlBlocks: [],
|
|
gHtmlMdBlocks: [],
|
|
gHtmlSpans: [],
|
|
gUrls: {},
|
|
gTitles: {},
|
|
gDimensions: {},
|
|
gListLevel: 0,
|
|
hashLinkCounts: {},
|
|
langExtensions: langExtensions,
|
|
outputModifiers: outputModifiers,
|
|
converter: this,
|
|
ghCodeBlocks: []
|
|
};
|
|
|
|
// attacklab: Replace ~ with ~T
|
|
// This lets us use tilde as an escape char to avoid md5 hashes
|
|
// The choice of character is arbitrary; anything that isn't
|
|
// magic in Markdown will work.
|
|
text = text.replace(/~/g, '~T');
|
|
|
|
// attacklab: Replace $ with ~D
|
|
// RegExp interprets $ as a special character
|
|
// when it's in a replacement string
|
|
text = text.replace(/\$/g, '~D');
|
|
|
|
// Standardize line endings
|
|
text = text.replace(/\r\n/g, '\n'); // DOS to Unix
|
|
text = text.replace(/\r/g, '\n'); // Mac to Unix
|
|
|
|
// Stardardize line spaces (nbsp causes trouble in older browsers and some regex flavors)
|
|
text = text.replace(/\u00A0/g, ' ');
|
|
|
|
if (options.smartIndentationFix) {
|
|
text = rTrimInputText(text);
|
|
}
|
|
|
|
// Make sure text begins and ends with a couple of newlines:
|
|
text = '\n\n' + text + '\n\n';
|
|
|
|
// detab
|
|
text = showdown.subParser('detab')(text, options, globals);
|
|
|
|
// stripBlankLines
|
|
text = showdown.subParser('stripBlankLines')(text, options, globals);
|
|
|
|
//run languageExtensions
|
|
showdown.helper.forEach(langExtensions, function (ext) {
|
|
text = showdown.subParser('runExtension')(ext, text, options, globals);
|
|
});
|
|
|
|
// run the sub parsers
|
|
text = showdown.subParser('hashPreCodeTags')(text, options, globals);
|
|
text = showdown.subParser('githubCodeBlocks')(text, options, globals);
|
|
text = showdown.subParser('hashHTMLBlocks')(text, options, globals);
|
|
text = showdown.subParser('hashHTMLSpans')(text, options, globals);
|
|
text = showdown.subParser('stripLinkDefinitions')(text, options, globals);
|
|
text = showdown.subParser('blockGamut')(text, options, globals);
|
|
text = showdown.subParser('unhashHTMLSpans')(text, options, globals);
|
|
text = showdown.subParser('unescapeSpecialChars')(text, options, globals);
|
|
|
|
// attacklab: Restore dollar signs
|
|
text = text.replace(/~D/g, '$$');
|
|
|
|
// attacklab: Restore tildes
|
|
text = text.replace(/~T/g, '~');
|
|
|
|
// Run output modifiers
|
|
showdown.helper.forEach(outputModifiers, function (ext) {
|
|
text = showdown.subParser('runExtension')(ext, text, options, globals);
|
|
});
|
|
|
|
return text;
|
|
};
|
|
|
|
/**
|
|
* Set an option of this Converter instance
|
|
* @param {string} key
|
|
* @param {*} value
|
|
*/
|
|
this.setOption = function (key, value) {
|
|
options[key] = value;
|
|
};
|
|
|
|
/**
|
|
* Get the option of this Converter instance
|
|
* @param {string} key
|
|
* @returns {*}
|
|
*/
|
|
this.getOption = function (key) {
|
|
return options[key];
|
|
};
|
|
|
|
/**
|
|
* Get the options of this Converter instance
|
|
* @returns {{}}
|
|
*/
|
|
this.getOptions = function () {
|
|
return options;
|
|
};
|
|
|
|
/**
|
|
* Add extension to THIS converter
|
|
* @param {{}} extension
|
|
* @param {string} [name=null]
|
|
*/
|
|
this.addExtension = function (extension, name) {
|
|
name = name || null;
|
|
_parseExtension(extension, name);
|
|
};
|
|
|
|
/**
|
|
* Use a global registered extension with THIS converter
|
|
* @param {string} extensionName Name of the previously registered extension
|
|
*/
|
|
this.useExtension = function (extensionName) {
|
|
_parseExtension(extensionName);
|
|
};
|
|
|
|
/**
|
|
* Set the flavor THIS converter should use
|
|
* @param {string} name
|
|
*/
|
|
this.setFlavor = function (name) {
|
|
if (!flavor.hasOwnProperty(name)) {
|
|
throw Error(name + ' flavor was not found');
|
|
}
|
|
var preset = flavor[name];
|
|
setConvFlavor = name;
|
|
for (var option in preset) {
|
|
if (preset.hasOwnProperty(option)) {
|
|
options[option] = preset[option];
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Get the currently set flavor of this converter
|
|
* @returns {string}
|
|
*/
|
|
this.getFlavor = function () {
|
|
return setConvFlavor;
|
|
};
|
|
|
|
/**
|
|
* Remove an extension from THIS converter.
|
|
* Note: This is a costly operation. It's better to initialize a new converter
|
|
* and specify the extensions you wish to use
|
|
* @param {Array} extension
|
|
*/
|
|
this.removeExtension = function (extension) {
|
|
if (!showdown.helper.isArray(extension)) {
|
|
extension = [extension];
|
|
}
|
|
for (var a = 0; a < extension.length; ++a) {
|
|
var ext = extension[a];
|
|
for (var i = 0; i < langExtensions.length; ++i) {
|
|
if (langExtensions[i] === ext) {
|
|
langExtensions[i].splice(i, 1);
|
|
}
|
|
}
|
|
for (var ii = 0; ii < outputModifiers.length; ++i) {
|
|
if (outputModifiers[ii] === ext) {
|
|
outputModifiers[ii].splice(i, 1);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Get all extension of THIS converter
|
|
* @returns {{language: Array, output: Array}}
|
|
*/
|
|
this.getAllExtensions = function () {
|
|
return {
|
|
language: langExtensions,
|
|
output: outputModifiers
|
|
};
|
|
};
|
|
};
|
|
|
|
/**
|
|
* Turn Markdown link shortcuts into XHTML <a> tags.
|
|
*/
|
|
showdown.subParser('anchors', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('anchors.before', text, options, globals);
|
|
|
|
var writeAnchorTag = function (wholeMatch, m1, m2, m3, m4, m5, m6, m7) {
|
|
if (showdown.helper.isUndefined(m7)) {
|
|
m7 = '';
|
|
}
|
|
wholeMatch = m1;
|
|
var linkText = m2,
|
|
linkId = m3.toLowerCase(),
|
|
url = m4,
|
|
title = m7;
|
|
|
|
if (!url) {
|
|
if (!linkId) {
|
|
// lower-case and turn embedded newlines into spaces
|
|
linkId = linkText.toLowerCase().replace(/ ?\n/g, ' ');
|
|
}
|
|
url = '#' + linkId;
|
|
|
|
if (!showdown.helper.isUndefined(globals.gUrls[linkId])) {
|
|
url = globals.gUrls[linkId];
|
|
if (!showdown.helper.isUndefined(globals.gTitles[linkId])) {
|
|
title = globals.gTitles[linkId];
|
|
}
|
|
} else {
|
|
if (wholeMatch.search(/\(\s*\)$/m) > -1) {
|
|
// Special case for explicit empty url
|
|
url = '';
|
|
} else {
|
|
return wholeMatch;
|
|
}
|
|
}
|
|
}
|
|
|
|
url = showdown.helper.escapeCharacters(url, '*_', false);
|
|
var result = '<a href="' + url + '"';
|
|
|
|
if (title !== '' && title !== null) {
|
|
title = title.replace(/"/g, '"');
|
|
title = showdown.helper.escapeCharacters(title, '*_', false);
|
|
result += ' title="' + title + '"';
|
|
}
|
|
|
|
result += '>' + linkText + '</a>';
|
|
|
|
return result;
|
|
};
|
|
|
|
// First, handle reference-style links: [link text] [id]
|
|
text = text.replace(/(\[((?:\[[^\]]*]|[^\[\]])*)][ ]?(?:\n[ ]*)?\[(.*?)])()()()()/g, writeAnchorTag);
|
|
|
|
// Next, inline-style links: [link text](url "optional title")
|
|
text = text.replace(/(\[((?:\[[^\]]*]|[^\[\]])*)]\([ \t]*()<?(.*?(?:\(.*?\).*?)?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,
|
|
writeAnchorTag);
|
|
|
|
// handle reference-style shortcuts: [link text]
|
|
// These must come last in case you've also got [link test][1]
|
|
// or [link test](/foo)
|
|
text = text.replace(/(\[([^\[\]]+)])()()()()()/g, writeAnchorTag);
|
|
|
|
// Lastly handle GithubMentions if option is enabled
|
|
if (options.ghMentions) {
|
|
text = text.replace(/(^|\s)(\\)?(@([a-z\d\-]+))(?=[.!?;,[\]()]|\s|$)/gmi, function (wm, st, escape, mentions, username) {
|
|
if (escape === '\\') {
|
|
return st + mentions;
|
|
}
|
|
return st + '<a href="https://www.github.com/' + username + '">' + mentions + '</a>';
|
|
});
|
|
}
|
|
|
|
text = globals.converter._dispatch('anchors.after', text, options, globals);
|
|
return text;
|
|
});
|
|
|
|
showdown.subParser('autoLinks', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('autoLinks.before', text, options, globals);
|
|
|
|
var simpleURLRegex = /\b(((https?|ftp|dict):\/\/|www\.)[^'">\s]+\.[^'">\s]+)()(?=\s|$)(?!["<>])/gi,
|
|
simpleURLRegex2 = /\b(((https?|ftp|dict):\/\/|www\.)[^'">\s]+\.[^'">\s]+?)([.!?()]?)(?=\s|$)(?!["<>])/gi,
|
|
delimUrlRegex = /<(((https?|ftp|dict):\/\/|www\.)[^'">\s]+)>/gi,
|
|
simpleMailRegex = /(?:^|\s)([A-Za-z0-9!#$%&'*+-/=?^_`{|}~.]+@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)(?:$|\s)/gi,
|
|
delimMailRegex = /<(?:mailto:)?([-.\w]+@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi;
|
|
|
|
text = text.replace(delimUrlRegex, replaceLink);
|
|
text = text.replace(delimMailRegex, replaceMail);
|
|
// simpleURLRegex = /\b(((https?|ftp|dict):\/\/|www\.)[-.+~:?#@!$&'()*,;=[\]\w]+)\b/gi,
|
|
// Email addresses: <address@domain.foo>
|
|
|
|
if (options.simplifiedAutoLink) {
|
|
if (options.excludeTrailingPunctuationFromURLs) {
|
|
text = text.replace(simpleURLRegex2, replaceLink);
|
|
} else {
|
|
text = text.replace(simpleURLRegex, replaceLink);
|
|
}
|
|
text = text.replace(simpleMailRegex, replaceMail);
|
|
}
|
|
|
|
function replaceLink(wm, link, m2, m3, trailingPunctuation) {
|
|
var lnkTxt = link,
|
|
append = '';
|
|
if (/^www\./i.test(link)) {
|
|
link = link.replace(/^www\./i, 'http://www.');
|
|
}
|
|
if (options.excludeTrailingPunctuationFromURLs && trailingPunctuation) {
|
|
append = trailingPunctuation;
|
|
}
|
|
return '<a href="' + link + '">' + lnkTxt + '</a>' + append;
|
|
}
|
|
|
|
function replaceMail(wholeMatch, mail) {
|
|
var unescapedStr = showdown.subParser('unescapeSpecialChars')(mail);
|
|
return showdown.subParser('encodeEmailAddress')(unescapedStr);
|
|
}
|
|
|
|
text = globals.converter._dispatch('autoLinks.after', text, options, globals);
|
|
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* These are all the transformations that form block-level
|
|
* tags like paragraphs, headers, and list items.
|
|
*/
|
|
showdown.subParser('blockGamut', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('blockGamut.before', text, options, globals);
|
|
|
|
// we parse blockquotes first so that we can have headings and hrs
|
|
// inside blockquotes
|
|
text = showdown.subParser('blockQuotes')(text, options, globals);
|
|
text = showdown.subParser('headers')(text, options, globals);
|
|
|
|
// Do Horizontal Rules:
|
|
var key = showdown.subParser('hashBlock')('<hr />', options, globals);
|
|
text = text.replace(/^ {0,2}( ?-){3,}[ \t]*$/gm, key);
|
|
text = text.replace(/^ {0,2}( ?\*){3,}[ \t]*$/gm, key);
|
|
text = text.replace(/^ {0,2}( ?_){3,}[ \t]*$/gm, key);
|
|
|
|
text = showdown.subParser('lists')(text, options, globals);
|
|
text = showdown.subParser('codeBlocks')(text, options, globals);
|
|
text = showdown.subParser('tables')(text, options, globals);
|
|
|
|
// We already ran _HashHTMLBlocks() before, in Markdown(), but that
|
|
// was to escape raw HTML in the original Markdown source. This time,
|
|
// we're escaping the markup we've just created, so that we don't wrap
|
|
// <p> tags around block-level tags.
|
|
text = showdown.subParser('hashHTMLBlocks')(text, options, globals);
|
|
text = showdown.subParser('paragraphs')(text, options, globals);
|
|
|
|
text = globals.converter._dispatch('blockGamut.after', text, options, globals);
|
|
|
|
return text;
|
|
});
|
|
|
|
showdown.subParser('blockQuotes', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('blockQuotes.before', text, options, globals);
|
|
|
|
text = text.replace(/((^ {0,3}>[ \t]?.+\n(.+\n)*\n*)+)/gm, function (wholeMatch, m1) {
|
|
var bq = m1;
|
|
|
|
// attacklab: hack around Konqueror 3.5.4 bug:
|
|
// "----------bug".replace(/^-/g,"") == "bug"
|
|
bq = bq.replace(/^[ \t]*>[ \t]?/gm, '~0'); // trim one level of quoting
|
|
|
|
// attacklab: clean up hack
|
|
bq = bq.replace(/~0/g, '');
|
|
|
|
bq = bq.replace(/^[ \t]+$/gm, ''); // trim whitespace-only lines
|
|
bq = showdown.subParser('githubCodeBlocks')(bq, options, globals);
|
|
bq = showdown.subParser('blockGamut')(bq, options, globals); // recurse
|
|
|
|
bq = bq.replace(/(^|\n)/g, '$1 ');
|
|
// These leading spaces screw with <pre> content, so we need to fix that:
|
|
bq = bq.replace(/(\s*<pre>[^\r]+?<\/pre>)/gm, function (wholeMatch, m1) {
|
|
var pre = m1;
|
|
// attacklab: hack around Konqueror 3.5.4 bug:
|
|
pre = pre.replace(/^ /mg, '~0');
|
|
pre = pre.replace(/~0/g, '');
|
|
return pre;
|
|
});
|
|
|
|
return showdown.subParser('hashBlock')('<blockquote>\n' + bq + '\n</blockquote>', options, globals);
|
|
});
|
|
|
|
text = globals.converter._dispatch('blockQuotes.after', text, options, globals);
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Process Markdown `<pre><code>` blocks.
|
|
*/
|
|
showdown.subParser('codeBlocks', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('codeBlocks.before', text, options, globals);
|
|
|
|
// sentinel workarounds for lack of \A and \Z, safari\khtml bug
|
|
text += '~0';
|
|
|
|
var pattern = /(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g;
|
|
text = text.replace(pattern, function (wholeMatch, m1, m2) {
|
|
var codeblock = m1,
|
|
nextChar = m2,
|
|
end = '\n';
|
|
|
|
codeblock = showdown.subParser('outdent')(codeblock);
|
|
codeblock = showdown.subParser('encodeCode')(codeblock);
|
|
codeblock = showdown.subParser('detab')(codeblock);
|
|
codeblock = codeblock.replace(/^\n+/g, ''); // trim leading newlines
|
|
codeblock = codeblock.replace(/\n+$/g, ''); // trim trailing newlines
|
|
|
|
if (options.omitExtraWLInCodeBlocks) {
|
|
end = '';
|
|
}
|
|
|
|
codeblock = '<pre><code>' + codeblock + end + '</code></pre>';
|
|
|
|
return showdown.subParser('hashBlock')(codeblock, options, globals) + nextChar;
|
|
});
|
|
|
|
// strip sentinel
|
|
text = text.replace(/~0/, '');
|
|
|
|
text = globals.converter._dispatch('codeBlocks.after', text, options, globals);
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
*
|
|
* * Backtick quotes are used for <code></code> spans.
|
|
*
|
|
* * You can use multiple backticks as the delimiters if you want to
|
|
* include literal backticks in the code span. So, this input:
|
|
*
|
|
* Just type ``foo `bar` baz`` at the prompt.
|
|
*
|
|
* Will translate to:
|
|
*
|
|
* <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
|
|
*
|
|
* There's no arbitrary limit to the number of backticks you
|
|
* can use as delimters. If you need three consecutive backticks
|
|
* in your code, use four for delimiters, etc.
|
|
*
|
|
* * You can use spaces to get literal backticks at the edges:
|
|
*
|
|
* ... type `` `bar` `` ...
|
|
*
|
|
* Turns to:
|
|
*
|
|
* ... type <code>`bar`</code> ...
|
|
*/
|
|
showdown.subParser('codeSpans', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('codeSpans.before', text, options, globals);
|
|
|
|
/*
|
|
text = text.replace(/
|
|
(^|[^\\]) // Character before opening ` can't be a backslash
|
|
(`+) // $2 = Opening run of `
|
|
( // $3 = The code block
|
|
[^\r]*?
|
|
[^`] // attacklab: work around lack of lookbehind
|
|
)
|
|
\2 // Matching closer
|
|
(?!`)
|
|
/gm, function(){...});
|
|
*/
|
|
|
|
if (typeof(text) === 'undefined') {
|
|
text = '';
|
|
}
|
|
text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
|
|
function (wholeMatch, m1, m2, m3) {
|
|
var c = m3;
|
|
c = c.replace(/^([ \t]*)/g, ''); // leading whitespace
|
|
c = c.replace(/[ \t]*$/g, ''); // trailing whitespace
|
|
c = showdown.subParser('encodeCode')(c);
|
|
return m1 + '<code>' + c + '</code>';
|
|
}
|
|
);
|
|
|
|
text = globals.converter._dispatch('codeSpans.after', text, options, globals);
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Convert all tabs to spaces
|
|
*/
|
|
showdown.subParser('detab', function (text) {
|
|
'use strict';
|
|
|
|
// expand first n-1 tabs
|
|
text = text.replace(/\t(?=\t)/g, ' '); // g_tab_width
|
|
|
|
// replace the nth with two sentinels
|
|
text = text.replace(/\t/g, '~A~B');
|
|
|
|
// use the sentinel to anchor our regex so it doesn't explode
|
|
text = text.replace(/~B(.+?)~A/g, function (wholeMatch, m1) {
|
|
var leadingText = m1,
|
|
numSpaces = 4 - leadingText.length % 4; // g_tab_width
|
|
|
|
// there *must* be a better way to do this:
|
|
for (var i = 0; i < numSpaces; i++) {
|
|
leadingText += ' ';
|
|
}
|
|
|
|
return leadingText;
|
|
});
|
|
|
|
// clean up sentinels
|
|
text = text.replace(/~A/g, ' '); // g_tab_width
|
|
text = text.replace(/~B/g, '');
|
|
|
|
return text;
|
|
|
|
});
|
|
|
|
/**
|
|
* Smart processing for ampersands and angle brackets that need to be encoded.
|
|
*/
|
|
showdown.subParser('encodeAmpsAndAngles', function (text) {
|
|
'use strict';
|
|
// Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
|
|
// http://bumppo.net/projects/amputator/
|
|
text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g, '&');
|
|
|
|
// Encode naked <'s
|
|
text = text.replace(/<(?![a-z\/?\$!])/gi, '<');
|
|
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Returns the string, with after processing the following backslash escape sequences.
|
|
*
|
|
* attacklab: The polite way to do this is with the new escapeCharacters() function:
|
|
*
|
|
* text = escapeCharacters(text,"\\",true);
|
|
* text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
|
|
*
|
|
* ...but we're sidestepping its use of the (slow) RegExp constructor
|
|
* as an optimization for Firefox. This function gets called a LOT.
|
|
*/
|
|
showdown.subParser('encodeBackslashEscapes', function (text) {
|
|
'use strict';
|
|
text = text.replace(/\\(\\)/g, showdown.helper.escapeCharactersCallback);
|
|
text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g, showdown.helper.escapeCharactersCallback);
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Encode/escape certain characters inside Markdown code runs.
|
|
* The point is that in code, these characters are literals,
|
|
* and lose their special Markdown meanings.
|
|
*/
|
|
showdown.subParser('encodeCode', function (text) {
|
|
'use strict';
|
|
|
|
// Encode all ampersands; HTML entities are not
|
|
// entities within a Markdown code span.
|
|
text = text.replace(/&/g, '&');
|
|
|
|
// Do the angle bracket song and dance:
|
|
text = text.replace(/</g, '<');
|
|
text = text.replace(/>/g, '>');
|
|
|
|
// Now, escape characters that are magic in Markdown:
|
|
text = showdown.helper.escapeCharacters(text, '*_{}[]\\', false);
|
|
|
|
// jj the line above breaks this:
|
|
//---
|
|
//* Item
|
|
// 1. Subitem
|
|
// special char: *
|
|
// ---
|
|
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Input: an email address, e.g. "foo@example.com"
|
|
*
|
|
* Output: the email address as a mailto link, with each character
|
|
* of the address encoded as either a decimal or hex entity, in
|
|
* the hopes of foiling most address harvesting spam bots. E.g.:
|
|
*
|
|
* <a href="mailto:foo@e
|
|
* xample.com">foo
|
|
* @example.com</a>
|
|
*
|
|
* Based on a filter by Matthew Wickline, posted to the BBEdit-Talk
|
|
* mailing list: <http://tinyurl.com/yu7ue>
|
|
*
|
|
*/
|
|
showdown.subParser('encodeEmailAddress', function (addr) {
|
|
'use strict';
|
|
|
|
var encode = [
|
|
function (ch) {
|
|
return '&#' + ch.charCodeAt(0) + ';';
|
|
},
|
|
function (ch) {
|
|
return '&#x' + ch.charCodeAt(0).toString(16) + ';';
|
|
},
|
|
function (ch) {
|
|
return ch;
|
|
}
|
|
];
|
|
|
|
addr = 'mailto:' + addr;
|
|
|
|
addr = addr.replace(/./g, function (ch) {
|
|
if (ch === '@') {
|
|
// this *must* be encoded. I insist.
|
|
ch = encode[Math.floor(Math.random() * 2)](ch);
|
|
} else if (ch !== ':') {
|
|
// leave ':' alone (to spot mailto: later)
|
|
var r = Math.random();
|
|
// roughly 10% raw, 45% hex, 45% dec
|
|
ch = (
|
|
r > 0.9 ? encode[2](ch) : r > 0.45 ? encode[1](ch) : encode[0](ch)
|
|
);
|
|
}
|
|
return ch;
|
|
});
|
|
|
|
addr = '<a href="' + addr + '">' + addr + '</a>';
|
|
addr = addr.replace(/">.+:/g, '">'); // strip the mailto: from the visible part
|
|
|
|
return addr;
|
|
});
|
|
|
|
/**
|
|
* Within tags -- meaning between < and > -- encode [\ ` * _] so they
|
|
* don't conflict with their use in Markdown for code, italics and strong.
|
|
*/
|
|
showdown.subParser('escapeSpecialCharsWithinTagAttributes', function (text) {
|
|
'use strict';
|
|
|
|
// Build a regex to find HTML tags and comments. See Friedl's
|
|
// "Mastering Regular Expressions", 2nd Ed., pp. 200-201.
|
|
var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|<!(--.*?--\s*)+>)/gi;
|
|
|
|
text = text.replace(regex, function (wholeMatch) {
|
|
var tag = wholeMatch.replace(/(.)<\/?code>(?=.)/g, '$1`');
|
|
tag = showdown.helper.escapeCharacters(tag, '\\`*_', false);
|
|
return tag;
|
|
});
|
|
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Handle github codeblocks prior to running HashHTML so that
|
|
* HTML contained within the codeblock gets escaped properly
|
|
* Example:
|
|
* ```ruby
|
|
* def hello_world(x)
|
|
* puts "Hello, #{x}"
|
|
* end
|
|
* ```
|
|
*/
|
|
showdown.subParser('githubCodeBlocks', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
// early exit if option is not enabled
|
|
if (!options.ghCodeBlocks) {
|
|
return text;
|
|
}
|
|
|
|
text = globals.converter._dispatch('githubCodeBlocks.before', text, options, globals);
|
|
|
|
text += '~0';
|
|
|
|
text = text.replace(/(?:^|\n)```(.*)\n([\s\S]*?)\n```/g, function (wholeMatch, language, codeblock) {
|
|
var end = (options.omitExtraWLInCodeBlocks) ? '' : '\n';
|
|
|
|
// First parse the github code block
|
|
codeblock = showdown.subParser('encodeCode')(codeblock);
|
|
codeblock = showdown.subParser('detab')(codeblock);
|
|
codeblock = codeblock.replace(/^\n+/g, ''); // trim leading newlines
|
|
codeblock = codeblock.replace(/\n+$/g, ''); // trim trailing whitespace
|
|
|
|
codeblock = '<pre><code' + (language ? ' class="' + language + ' language-' + language + '"' : '') + '>' + codeblock + end + '</code></pre>';
|
|
|
|
codeblock = showdown.subParser('hashBlock')(codeblock, options, globals);
|
|
|
|
// Since GHCodeblocks can be false positives, we need to
|
|
// store the primitive text and the parsed text in a global var,
|
|
// and then return a token
|
|
return '\n\n~G' + (globals.ghCodeBlocks.push({text: wholeMatch, codeblock: codeblock}) - 1) + 'G\n\n';
|
|
});
|
|
|
|
// attacklab: strip sentinel
|
|
text = text.replace(/~0/, '');
|
|
|
|
return globals.converter._dispatch('githubCodeBlocks.after', text, options, globals);
|
|
});
|
|
|
|
showdown.subParser('hashBlock', function (text, options, globals) {
|
|
'use strict';
|
|
text = text.replace(/(^\n+|\n+$)/g, '');
|
|
return '\n\n~K' + (globals.gHtmlBlocks.push(text) - 1) + 'K\n\n';
|
|
});
|
|
|
|
showdown.subParser('hashElement', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
return function (wholeMatch, m1) {
|
|
var blockText = m1;
|
|
|
|
// Undo double lines
|
|
blockText = blockText.replace(/\n\n/g, '\n');
|
|
blockText = blockText.replace(/^\n/, '');
|
|
|
|
// strip trailing blank lines
|
|
blockText = blockText.replace(/\n+$/g, '');
|
|
|
|
// Replace the element text with a marker ("~KxK" where x is its key)
|
|
blockText = '\n\n~K' + (globals.gHtmlBlocks.push(blockText) - 1) + 'K\n\n';
|
|
|
|
return blockText;
|
|
};
|
|
});
|
|
|
|
showdown.subParser('hashHTMLBlocks', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
var blockTags = [
|
|
'pre',
|
|
'div',
|
|
'h1',
|
|
'h2',
|
|
'h3',
|
|
'h4',
|
|
'h5',
|
|
'h6',
|
|
'blockquote',
|
|
'table',
|
|
'dl',
|
|
'ol',
|
|
'ul',
|
|
'script',
|
|
'noscript',
|
|
'form',
|
|
'fieldset',
|
|
'iframe',
|
|
'math',
|
|
'style',
|
|
'section',
|
|
'header',
|
|
'footer',
|
|
'nav',
|
|
'article',
|
|
'aside',
|
|
'address',
|
|
'audio',
|
|
'canvas',
|
|
'figure',
|
|
'hgroup',
|
|
'output',
|
|
'video',
|
|
'p'
|
|
],
|
|
repFunc = function (wholeMatch, match, left, right) {
|
|
var txt = wholeMatch;
|
|
// check if this html element is marked as markdown
|
|
// if so, it's contents should be parsed as markdown
|
|
if (left.search(/\bmarkdown\b/) !== -1) {
|
|
txt = left + globals.converter.makeHtml(match) + right;
|
|
}
|
|
return '\n\n~K' + (globals.gHtmlBlocks.push(txt) - 1) + 'K\n\n';
|
|
};
|
|
|
|
for (var i = 0; i < blockTags.length; ++i) {
|
|
text = showdown.helper.replaceRecursiveRegExp(text, repFunc, '^ {0,3}<' + blockTags[i] + '\\b[^>]*>', '</' + blockTags[i] + '>', 'gim');
|
|
}
|
|
|
|
// HR SPECIAL CASE
|
|
text = text.replace(/(\n {0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,
|
|
showdown.subParser('hashElement')(text, options, globals));
|
|
|
|
// Special case for standalone HTML comments
|
|
text = showdown.helper.replaceRecursiveRegExp(text, function (txt) {
|
|
return '\n\n~K' + (globals.gHtmlBlocks.push(txt) - 1) + 'K\n\n';
|
|
}, '^ {0,3}<!--', '-->', 'gm');
|
|
|
|
// PHP and ASP-style processor instructions (<?...?> and <%...%>)
|
|
text = text.replace(/(?:\n\n)( {0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,
|
|
showdown.subParser('hashElement')(text, options, globals));
|
|
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Hash span elements that should not be parsed as markdown
|
|
*/
|
|
showdown.subParser('hashHTMLSpans', function (text, config, globals) {
|
|
'use strict';
|
|
|
|
var matches = showdown.helper.matchRecursiveRegExp(text, '<code\\b[^>]*>', '</code>', 'gi');
|
|
|
|
for (var i = 0; i < matches.length; ++i) {
|
|
text = text.replace(matches[i][0], '~C' + (globals.gHtmlSpans.push(matches[i][0]) - 1) + 'C');
|
|
}
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Unhash HTML spans
|
|
*/
|
|
showdown.subParser('unhashHTMLSpans', function (text, config, globals) {
|
|
'use strict';
|
|
|
|
for (var i = 0; i < globals.gHtmlSpans.length; ++i) {
|
|
text = text.replace('~C' + i + 'C', globals.gHtmlSpans[i]);
|
|
}
|
|
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Hash span elements that should not be parsed as markdown
|
|
*/
|
|
showdown.subParser('hashPreCodeTags', function (text, config, globals) {
|
|
'use strict';
|
|
|
|
var repFunc = function (wholeMatch, match, left, right) {
|
|
// encode html entities
|
|
var codeblock = left + showdown.subParser('encodeCode')(match) + right;
|
|
return '\n\n~G' + (globals.ghCodeBlocks.push({text: wholeMatch, codeblock: codeblock}) - 1) + 'G\n\n';
|
|
};
|
|
|
|
text = showdown.helper.replaceRecursiveRegExp(text, repFunc, '^ {0,3}<pre\\b[^>]*>\\s*<code\\b[^>]*>', '^ {0,3}</code>\\s*</pre>', 'gim');
|
|
return text;
|
|
});
|
|
|
|
showdown.subParser('headers', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('headers.before', text, options, globals);
|
|
|
|
var prefixHeader = options.prefixHeaderId,
|
|
headerLevelStart = (isNaN(parseInt(options.headerLevelStart))) ? 1 : parseInt(options.headerLevelStart),
|
|
ghHeaderId = options.ghCompatibleHeaderId,
|
|
|
|
// Set text-style headers:
|
|
// Header 1
|
|
// ========
|
|
//
|
|
// Header 2
|
|
// --------
|
|
//
|
|
setextRegexH1 = (options.smoothLivePreview) ? /^(.+)[ \t]*\n={2,}[ \t]*\n+/gm : /^(.+)[ \t]*\n=+[ \t]*\n+/gm,
|
|
setextRegexH2 = (options.smoothLivePreview) ? /^(.+)[ \t]*\n-{2,}[ \t]*\n+/gm : /^(.+)[ \t]*\n-+[ \t]*\n+/gm;
|
|
|
|
text = text.replace(setextRegexH1, function (wholeMatch, m1) {
|
|
|
|
var spanGamut = showdown.subParser('spanGamut')(m1, options, globals),
|
|
hID = (options.noHeaderId) ? '' : ' id="' + headerId(m1) + '"',
|
|
hLevel = headerLevelStart,
|
|
hashBlock = '<h' + hLevel + hID + '>' + spanGamut + '</h' + hLevel + '>';
|
|
return showdown.subParser('hashBlock')(hashBlock, options, globals);
|
|
});
|
|
|
|
text = text.replace(setextRegexH2, function (matchFound, m1) {
|
|
var spanGamut = showdown.subParser('spanGamut')(m1, options, globals),
|
|
hID = (options.noHeaderId) ? '' : ' id="' + headerId(m1) + '"',
|
|
hLevel = headerLevelStart + 1,
|
|
hashBlock = '<h' + hLevel + hID + '>' + spanGamut + '</h' + hLevel + '>';
|
|
return showdown.subParser('hashBlock')(hashBlock, options, globals);
|
|
});
|
|
|
|
// atx-style headers:
|
|
// # Header 1
|
|
// ## Header 2
|
|
// ## Header 2 with closing hashes ##
|
|
// ...
|
|
// ###### Header 6
|
|
//
|
|
var atxStyle = (options.requireSpaceBeforeHeadingText) ? /^(#{1,6})[ \t]+(.+?)[ \t]*#*\n+/gm : /^(#{1,6})[ \t]*(.+?)[ \t]*#*\n+/gm;
|
|
|
|
text = text.replace(atxStyle, function (wholeMatch, m1, m2) {
|
|
var span = showdown.subParser('spanGamut')(m2, options, globals),
|
|
hID = (options.noHeaderId) ? '' : ' id="' + headerId(m2) + '"',
|
|
hLevel = headerLevelStart - 1 + m1.length,
|
|
header = '<h' + hLevel + hID + '>' + span + '</h' + hLevel + '>';
|
|
|
|
return showdown.subParser('hashBlock')(header, options, globals);
|
|
});
|
|
|
|
function headerId(m) {
|
|
var title, escapedId;
|
|
|
|
if (ghHeaderId) {
|
|
escapedId = m
|
|
.replace(/ /g, '-')
|
|
//replace previously escaped chars (&, ~ and $)
|
|
.replace(/&/g, '')
|
|
.replace(/~T/g, '')
|
|
.replace(/~D/g, '')
|
|
//replace rest of the chars (&~$ are repeated as they might have been escaped)
|
|
// borrowed from github's redcarpet (some they should produce similar results)
|
|
.replace(/[&+$,\/:;=?@"#{}|^~\[\]`\\*)(%.!'<>]/g, '')
|
|
.toLowerCase();
|
|
} else {
|
|
escapedId = m.replace(/[^\w]/g, '').toLowerCase();
|
|
}
|
|
|
|
if (globals.hashLinkCounts[escapedId]) {
|
|
title = escapedId + '-' + (globals.hashLinkCounts[escapedId]++);
|
|
} else {
|
|
title = escapedId;
|
|
globals.hashLinkCounts[escapedId] = 1;
|
|
}
|
|
|
|
// Prefix id to prevent causing inadvertent pre-existing style matches.
|
|
if (prefixHeader === true) {
|
|
prefixHeader = 'section';
|
|
}
|
|
|
|
if (showdown.helper.isString(prefixHeader)) {
|
|
return prefixHeader + title;
|
|
}
|
|
return title;
|
|
}
|
|
|
|
text = globals.converter._dispatch('headers.after', text, options, globals);
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Turn Markdown image shortcuts into <img> tags.
|
|
*/
|
|
showdown.subParser('images', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('images.before', text, options, globals);
|
|
|
|
var inlineRegExp = /!\[(.*?)]\s?\([ \t]*()<?(\S+?)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*(?:(['"])(.*?)\6[ \t]*)?\)/g,
|
|
referenceRegExp = /!\[([^\]]*?)] ?(?:\n *)?\[(.*?)]()()()()()/g;
|
|
|
|
function writeImageTag (wholeMatch, altText, linkId, url, width, height, m5, title) {
|
|
|
|
var gUrls = globals.gUrls,
|
|
gTitles = globals.gTitles,
|
|
gDims = globals.gDimensions;
|
|
|
|
linkId = linkId.toLowerCase();
|
|
|
|
if (!title) {
|
|
title = '';
|
|
}
|
|
|
|
if (url === '' || url === null) {
|
|
if (linkId === '' || linkId === null) {
|
|
// lower-case and turn embedded newlines into spaces
|
|
linkId = altText.toLowerCase().replace(/ ?\n/g, ' ');
|
|
}
|
|
url = '#' + linkId;
|
|
|
|
if (!showdown.helper.isUndefined(gUrls[linkId])) {
|
|
url = gUrls[linkId];
|
|
if (!showdown.helper.isUndefined(gTitles[linkId])) {
|
|
title = gTitles[linkId];
|
|
}
|
|
if (!showdown.helper.isUndefined(gDims[linkId])) {
|
|
width = gDims[linkId].width;
|
|
height = gDims[linkId].height;
|
|
}
|
|
} else {
|
|
return wholeMatch;
|
|
}
|
|
}
|
|
|
|
altText = altText.replace(/"/g, '"');
|
|
altText = showdown.helper.escapeCharacters(altText, '*_', false);
|
|
url = showdown.helper.escapeCharacters(url, '*_', false);
|
|
var result = '<img src="' + url + '" alt="' + altText + '"';
|
|
|
|
if (title) {
|
|
title = title.replace(/"/g, '"');
|
|
title = showdown.helper.escapeCharacters(title, '*_', false);
|
|
result += ' title="' + title + '"';
|
|
}
|
|
|
|
if (width && height) {
|
|
width = (width === '*') ? 'auto' : width;
|
|
height = (height === '*') ? 'auto' : height;
|
|
|
|
result += ' width="' + width + '"';
|
|
result += ' height="' + height + '"';
|
|
}
|
|
|
|
result += ' />';
|
|
|
|
return result;
|
|
}
|
|
|
|
// First, handle reference-style labeled images: ![alt text][id]
|
|
text = text.replace(referenceRegExp, writeImageTag);
|
|
|
|
// Next, handle inline images: 
|
|
text = text.replace(inlineRegExp, writeImageTag);
|
|
|
|
text = globals.converter._dispatch('images.after', text, options, globals);
|
|
return text;
|
|
});
|
|
|
|
showdown.subParser('italicsAndBold', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('italicsAndBold.before', text, options, globals);
|
|
|
|
if (options.literalMidWordUnderscores) {
|
|
//underscores
|
|
// Since we are consuming a \s character, we need to add it
|
|
text = text.replace(/(^|\s|>|\b)__(?=\S)([\s\S]+?)__(?=\b|<|\s|$)/gm, '$1<strong>$2</strong>');
|
|
text = text.replace(/(^|\s|>|\b)_(?=\S)([\s\S]+?)_(?=\b|<|\s|$)/gm, '$1<em>$2</em>');
|
|
//asterisks
|
|
text = text.replace(/(\*\*)(?=\S)([^\r]*?\S[*]*)\1/g, '<strong>$2</strong>');
|
|
text = text.replace(/(\*)(?=\S)([^\r]*?\S)\1/g, '<em>$2</em>');
|
|
|
|
} else {
|
|
// <strong> must go first:
|
|
text = text.replace(/(\*\*|__)(?=\S)([^\r]*?\S[*_]*)\1/g, '<strong>$2</strong>');
|
|
text = text.replace(/(\*|_)(?=\S)([^\r]*?\S)\1/g, '<em>$2</em>');
|
|
}
|
|
|
|
text = globals.converter._dispatch('italicsAndBold.after', text, options, globals);
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Form HTML ordered (numbered) and unordered (bulleted) lists.
|
|
*/
|
|
showdown.subParser('lists', function (text, options, globals) {
|
|
'use strict';
|
|
text = globals.converter._dispatch('lists.before', text, options, globals);
|
|
|
|
/**
|
|
* Process the contents of a single ordered or unordered list, splitting it
|
|
* into individual list items.
|
|
* @param {string} listStr
|
|
* @param {boolean} trimTrailing
|
|
* @returns {string}
|
|
*/
|
|
function processListItems (listStr, trimTrailing) {
|
|
// The $g_list_level global keeps track of when we're inside a list.
|
|
// Each time we enter a list, we increment it; when we leave a list,
|
|
// we decrement. If it's zero, we're not in a list anymore.
|
|
//
|
|
// We do this because when we're not inside a list, we want to treat
|
|
// something like this:
|
|
//
|
|
// I recommend upgrading to version
|
|
// 8. Oops, now this line is treated
|
|
// as a sub-list.
|
|
//
|
|
// As a single paragraph, despite the fact that the second line starts
|
|
// with a digit-period-space sequence.
|
|
//
|
|
// Whereas when we're inside a list (or sub-list), that line will be
|
|
// treated as the start of a sub-list. What a kludge, huh? This is
|
|
// an aspect of Markdown's syntax that's hard to parse perfectly
|
|
// without resorting to mind-reading. Perhaps the solution is to
|
|
// change the syntax rules such that sub-lists must start with a
|
|
// starting cardinal number; e.g. "1." or "a.".
|
|
globals.gListLevel++;
|
|
|
|
// trim trailing blank lines:
|
|
listStr = listStr.replace(/\n{2,}$/, '\n');
|
|
|
|
// attacklab: add sentinel to emulate \z
|
|
listStr += '~0';
|
|
|
|
var rgx = /(\n)?(^ {0,3})([*+-]|\d+[.])[ \t]+((\[(x|X| )?])?[ \t]*[^\r]+?(\n{1,2}))(?=\n*(~0| {0,3}([*+-]|\d+[.])[ \t]+))/gm,
|
|
isParagraphed = (/\n[ \t]*\n(?!~0)/.test(listStr));
|
|
|
|
// Since version 1.5, nesting sublists requires 4 spaces (or 1 tab) indentation,
|
|
// which is a syntax breaking change
|
|
// activating this option reverts to old behavior
|
|
if (options.disableForced4SpacesIndentedSublists) {
|
|
rgx = /(\n)?(^ {0,3})([*+-]|\d+[.])[ \t]+((\[(x|X| )?])?[ \t]*[^\r]+?(\n{1,2}))(?=\n*(~0|\2([*+-]|\d+[.])[ \t]+))/gm;
|
|
}
|
|
|
|
listStr = listStr.replace(rgx, function (wholeMatch, m1, m2, m3, m4, taskbtn, checked) {
|
|
checked = (checked && checked.trim() !== '');
|
|
|
|
var item = showdown.subParser('outdent')(m4, options, globals),
|
|
bulletStyle = '';
|
|
|
|
// Support for github tasklists
|
|
if (taskbtn && options.tasklists) {
|
|
bulletStyle = ' class="task-list-item" style="list-style-type: none;"';
|
|
item = item.replace(/^[ \t]*\[(x|X| )?]/m, function () {
|
|
var otp = '<input type="checkbox" disabled style="margin: 0px 0.35em 0.25em -1.6em; vertical-align: middle;"';
|
|
if (checked) {
|
|
otp += ' checked';
|
|
}
|
|
otp += '>';
|
|
return otp;
|
|
});
|
|
}
|
|
|
|
// ISSUE #312
|
|
// This input: - - - a
|
|
// causes trouble to the parser, since it interprets it as:
|
|
// <ul><li><li><li>a</li></li></li></ul>
|
|
// instead of:
|
|
// <ul><li>- - a</li></ul>
|
|
// So, to prevent it, we will put a marker (~A)in the beginning of the line
|
|
// Kind of hackish/monkey patching, but seems more effective than overcomplicating the list parser
|
|
item = item.replace(/^([-*+]|\d\.)[ \t]+[\S\n ]*/g, function (wm2) {
|
|
return '~A' + wm2;
|
|
});
|
|
|
|
// m1 - Leading line or
|
|
// Has a double return (multi paragraph) or
|
|
// Has sublist
|
|
if (m1 || (item.search(/\n{2,}/) > -1)) {
|
|
item = showdown.subParser('githubCodeBlocks')(item, options, globals);
|
|
item = showdown.subParser('blockGamut')(item, options, globals);
|
|
} else {
|
|
// Recursion for sub-lists:
|
|
item = showdown.subParser('lists')(item, options, globals);
|
|
item = item.replace(/\n$/, ''); // chomp(item)
|
|
item = showdown.subParser('hashHTMLBlocks')(item, options, globals);
|
|
// Colapse double linebreaks
|
|
item = item.replace(/\n\n+/g, '\n\n');
|
|
// replace double linebreaks with a placeholder
|
|
item = item.replace(/\n\n/g, '~B');
|
|
if (isParagraphed) {
|
|
item = showdown.subParser('paragraphs')(item, options, globals);
|
|
} else {
|
|
item = showdown.subParser('spanGamut')(item, options, globals);
|
|
}
|
|
item = item.replace(/~B/g, '\n\n');
|
|
}
|
|
|
|
// now we need to remove the marker (~A)
|
|
item = item.replace('~A', '');
|
|
// we can finally wrap the line in list item tags
|
|
item = '<li' + bulletStyle + '>' + item + '</li>\n';
|
|
|
|
return item;
|
|
});
|
|
|
|
// attacklab: strip sentinel
|
|
listStr = listStr.replace(/~0/g, '');
|
|
|
|
globals.gListLevel--;
|
|
|
|
if (trimTrailing) {
|
|
listStr = listStr.replace(/\s+$/, '');
|
|
}
|
|
|
|
return listStr;
|
|
}
|
|
|
|
/**
|
|
* Check and parse consecutive lists (better fix for issue #142)
|
|
* @param {string} list
|
|
* @param {string} listType
|
|
* @param {boolean} trimTrailing
|
|
* @returns {string}
|
|
*/
|
|
function parseConsecutiveLists(list, listType, trimTrailing) {
|
|
// check if we caught 2 or more consecutive lists by mistake
|
|
// we use the counterRgx, meaning if listType is UL we look for OL and vice versa
|
|
var olRgx = (options.disableForced4SpacesIndentedSublists) ? /^ ?\d+\.[ \t]/gm : /^ {0,3}\d+\.[ \t]/gm,
|
|
ulRgx = (options.disableForced4SpacesIndentedSublists) ? /^ ?[*+-][ \t]/gm : /^ {0,3}[*+-][ \t]/gm,
|
|
counterRxg = (listType === 'ul') ? olRgx : ulRgx,
|
|
result = '';
|
|
|
|
if (list.search(counterRxg) !== -1) {
|
|
(function parseCL(txt) {
|
|
var pos = txt.search(counterRxg);
|
|
if (pos !== -1) {
|
|
// slice
|
|
result += '\n<' + listType + '>\n' + processListItems(txt.slice(0, pos), !!trimTrailing) + '</' + listType + '>\n';
|
|
|
|
// invert counterType and listType
|
|
listType = (listType === 'ul') ? 'ol' : 'ul';
|
|
counterRxg = (listType === 'ul') ? olRgx : ulRgx;
|
|
|
|
//recurse
|
|
parseCL(txt.slice(pos));
|
|
} else {
|
|
result += '\n<' + listType + '>\n' + processListItems(txt, !!trimTrailing) + '</' + listType + '>\n';
|
|
}
|
|
})(list);
|
|
} else {
|
|
result = '\n<' + listType + '>\n' + processListItems(list, !!trimTrailing) + '</' + listType + '>\n';
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// add sentinel to hack around khtml/safari bug:
|
|
// http://bugs.webkit.org/show_bug.cgi?id=11231
|
|
text += '~0';
|
|
|
|
if (globals.gListLevel) {
|
|
text = text.replace(/^(( {0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm,
|
|
function (wholeMatch, list, m2) {
|
|
var listType = (m2.search(/[*+-]/g) > -1) ? 'ul' : 'ol';
|
|
return parseConsecutiveLists(list, listType, true);
|
|
}
|
|
);
|
|
} else {
|
|
text = text.replace(/(\n\n|^\n?)(( {0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm,
|
|
function (wholeMatch, m1, list, m3) {
|
|
var listType = (m3.search(/[*+-]/g) > -1) ? 'ul' : 'ol';
|
|
return parseConsecutiveLists(list, listType, false);
|
|
}
|
|
);
|
|
}
|
|
|
|
// strip sentinel
|
|
text = text.replace(/~0/, '');
|
|
text = globals.converter._dispatch('lists.after', text, options, globals);
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Remove one level of line-leading tabs or spaces
|
|
*/
|
|
showdown.subParser('outdent', function (text) {
|
|
'use strict';
|
|
|
|
// attacklab: hack around Konqueror 3.5.4 bug:
|
|
// "----------bug".replace(/^-/g,"") == "bug"
|
|
text = text.replace(/^(\t|[ ]{1,4})/gm, '~0'); // attacklab: g_tab_width
|
|
|
|
// attacklab: clean up hack
|
|
text = text.replace(/~0/g, '');
|
|
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
*
|
|
*/
|
|
showdown.subParser('paragraphs', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('paragraphs.before', text, options, globals);
|
|
// Strip leading and trailing lines:
|
|
text = text.replace(/^\n+/g, '');
|
|
text = text.replace(/\n+$/g, '');
|
|
|
|
var grafs = text.split(/\n{2,}/g),
|
|
grafsOut = [],
|
|
end = grafs.length; // Wrap <p> tags
|
|
|
|
for (var i = 0; i < end; i++) {
|
|
var str = grafs[i];
|
|
// if this is an HTML marker, copy it
|
|
if (str.search(/~(K|G)(\d+)\1/g) >= 0) {
|
|
grafsOut.push(str);
|
|
} else {
|
|
str = showdown.subParser('spanGamut')(str, options, globals);
|
|
str = str.replace(/^([ \t]*)/g, '<p>');
|
|
str += '</p>';
|
|
grafsOut.push(str);
|
|
}
|
|
}
|
|
|
|
/** Unhashify HTML blocks */
|
|
end = grafsOut.length;
|
|
for (i = 0; i < end; i++) {
|
|
var blockText = '',
|
|
grafsOutIt = grafsOut[i],
|
|
codeFlag = false;
|
|
// if this is a marker for an html block...
|
|
while (grafsOutIt.search(/~(K|G)(\d+)\1/) >= 0) {
|
|
var delim = RegExp.$1,
|
|
num = RegExp.$2;
|
|
|
|
if (delim === 'K') {
|
|
blockText = globals.gHtmlBlocks[num];
|
|
} else {
|
|
// we need to check if ghBlock is a false positive
|
|
if (codeFlag) {
|
|
// use encoded version of all text
|
|
blockText = showdown.subParser('encodeCode')(globals.ghCodeBlocks[num].text);
|
|
} else {
|
|
blockText = globals.ghCodeBlocks[num].codeblock;
|
|
}
|
|
}
|
|
blockText = blockText.replace(/\$/g, '$$$$'); // Escape any dollar signs
|
|
|
|
grafsOutIt = grafsOutIt.replace(/(\n\n)?~(K|G)\d+\2(\n\n)?/, blockText);
|
|
// Check if grafsOutIt is a pre->code
|
|
if (/^<pre\b[^>]*>\s*<code\b[^>]*>/.test(grafsOutIt)) {
|
|
codeFlag = true;
|
|
}
|
|
}
|
|
grafsOut[i] = grafsOutIt;
|
|
}
|
|
text = grafsOut.join('\n');
|
|
// Strip leading and trailing lines:
|
|
text = text.replace(/^\n+/g, '');
|
|
text = text.replace(/\n+$/g, '');
|
|
return globals.converter._dispatch('paragraphs.after', text, options, globals);
|
|
});
|
|
|
|
/**
|
|
* Run extension
|
|
*/
|
|
showdown.subParser('runExtension', function (ext, text, options, globals) {
|
|
'use strict';
|
|
|
|
if (ext.filter) {
|
|
text = ext.filter(text, globals.converter, options);
|
|
|
|
} else if (ext.regex) {
|
|
// TODO remove this when old extension loading mechanism is deprecated
|
|
var re = ext.regex;
|
|
if (!re instanceof RegExp) {
|
|
re = new RegExp(re, 'g');
|
|
}
|
|
text = text.replace(re, ext.replace);
|
|
}
|
|
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* These are all the transformations that occur *within* block-level
|
|
* tags like paragraphs, headers, and list items.
|
|
*/
|
|
showdown.subParser('spanGamut', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
text = globals.converter._dispatch('spanGamut.before', text, options, globals);
|
|
text = showdown.subParser('codeSpans')(text, options, globals);
|
|
text = showdown.subParser('escapeSpecialCharsWithinTagAttributes')(text, options, globals);
|
|
text = showdown.subParser('encodeBackslashEscapes')(text, options, globals);
|
|
|
|
// Process anchor and image tags. Images must come first,
|
|
// because ![foo][f] looks like an anchor.
|
|
text = showdown.subParser('images')(text, options, globals);
|
|
text = showdown.subParser('anchors')(text, options, globals);
|
|
|
|
// Make links out of things like `<http://example.com/>`
|
|
// Must come after _DoAnchors(), because you can use < and >
|
|
// delimiters in inline links like [this](<url>).
|
|
text = showdown.subParser('autoLinks')(text, options, globals);
|
|
text = showdown.subParser('encodeAmpsAndAngles')(text, options, globals);
|
|
text = showdown.subParser('italicsAndBold')(text, options, globals);
|
|
text = showdown.subParser('strikethrough')(text, options, globals);
|
|
|
|
// Do hard breaks
|
|
if (options.simpleLineBreaks) {
|
|
// GFM style hard breaks
|
|
text = text.replace(/\n/g, '<br />\n');
|
|
} else {
|
|
// Vanilla hard breaks
|
|
text = text.replace(/ +\n/g, '<br />\n');
|
|
}
|
|
|
|
text = globals.converter._dispatch('spanGamut.after', text, options, globals);
|
|
return text;
|
|
});
|
|
|
|
showdown.subParser('strikethrough', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
if (options.strikethrough) {
|
|
text = globals.converter._dispatch('strikethrough.before', text, options, globals);
|
|
text = text.replace(/(?:~T){2}([\s\S]+?)(?:~T){2}/g, '<del>$1</del>');
|
|
text = globals.converter._dispatch('strikethrough.after', text, options, globals);
|
|
}
|
|
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Strip any lines consisting only of spaces and tabs.
|
|
* This makes subsequent regexs easier to write, because we can
|
|
* match consecutive blank lines with /\n+/ instead of something
|
|
* contorted like /[ \t]*\n+/
|
|
*/
|
|
showdown.subParser('stripBlankLines', function (text) {
|
|
'use strict';
|
|
return text.replace(/^[ \t]+$/mg, '');
|
|
});
|
|
|
|
/**
|
|
* Strips link definitions from text, stores the URLs and titles in
|
|
* hash references.
|
|
* Link defs are in the form: ^[id]: url "optional title"
|
|
*/
|
|
showdown.subParser('stripLinkDefinitions', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
var regex = /^ {0,3}\[(.+)]:[ \t]*\n?[ \t]*<?(\S+?)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*\n?[ \t]*(?:(\n*)["|'(](.+?)["|')][ \t]*)?(?:\n+|(?=~0))/gm;
|
|
|
|
// attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
|
|
text += '~0';
|
|
|
|
text = text.replace(regex, function (wholeMatch, linkId, url, width, height, blankLines, title) {
|
|
linkId = linkId.toLowerCase();
|
|
globals.gUrls[linkId] = showdown.subParser('encodeAmpsAndAngles')(url); // Link IDs are case-insensitive
|
|
|
|
if (blankLines) {
|
|
// Oops, found blank lines, so it's not a title.
|
|
// Put back the parenthetical statement we stole.
|
|
return blankLines + title;
|
|
|
|
} else {
|
|
if (title) {
|
|
globals.gTitles[linkId] = title.replace(/"|'/g, '"');
|
|
}
|
|
if (options.parseImgDimensions && width && height) {
|
|
globals.gDimensions[linkId] = {
|
|
width: width,
|
|
height: height
|
|
};
|
|
}
|
|
}
|
|
// Completely remove the definition from the text
|
|
return '';
|
|
});
|
|
|
|
// attacklab: strip sentinel
|
|
text = text.replace(/~0/, '');
|
|
|
|
return text;
|
|
});
|
|
|
|
showdown.subParser('tables', function (text, options, globals) {
|
|
'use strict';
|
|
|
|
if (!options.tables) {
|
|
return text;
|
|
}
|
|
|
|
var tableRgx = /^ {0,3}\|?.+\|.+\n[ \t]{0,3}\|?[ \t]*:?[ \t]*(?:-|=){2,}[ \t]*:?[ \t]*\|[ \t]*:?[ \t]*(?:-|=){2,}[\s\S]+?(?:\n\n|~0)/gm;
|
|
|
|
function parseStyles(sLine) {
|
|
if (/^:[ \t]*--*$/.test(sLine)) {
|
|
return ' style="text-align:left;"';
|
|
} else if (/^--*[ \t]*:[ \t]*$/.test(sLine)) {
|
|
return ' style="text-align:right;"';
|
|
} else if (/^:[ \t]*--*[ \t]*:$/.test(sLine)) {
|
|
return ' style="text-align:center;"';
|
|
} else {
|
|
return '';
|
|
}
|
|
}
|
|
|
|
function parseHeaders(header, style) {
|
|
var id = '';
|
|
header = header.trim();
|
|
if (options.tableHeaderId) {
|
|
id = ' id="' + header.replace(/ /g, '_').toLowerCase() + '"';
|
|
}
|
|
header = showdown.subParser('spanGamut')(header, options, globals);
|
|
|
|
return '<th' + id + style + '>' + header + '</th>\n';
|
|
}
|
|
|
|
function parseCells(cell, style) {
|
|
var subText = showdown.subParser('spanGamut')(cell, options, globals);
|
|
return '<td' + style + '>' + subText + '</td>\n';
|
|
}
|
|
|
|
function buildTable(headers, cells) {
|
|
var tb = '<table>\n<thead>\n<tr>\n',
|
|
tblLgn = headers.length;
|
|
|
|
for (var i = 0; i < tblLgn; ++i) {
|
|
tb += headers[i];
|
|
}
|
|
tb += '</tr>\n</thead>\n<tbody>\n';
|
|
|
|
for (i = 0; i < cells.length; ++i) {
|
|
tb += '<tr>\n';
|
|
for (var ii = 0; ii < tblLgn; ++ii) {
|
|
tb += cells[i][ii];
|
|
}
|
|
tb += '</tr>\n';
|
|
}
|
|
tb += '</tbody>\n</table>\n';
|
|
return tb;
|
|
}
|
|
|
|
text = globals.converter._dispatch('tables.before', text, options, globals);
|
|
|
|
text = text.replace(tableRgx, function (rawTable) {
|
|
|
|
var i, tableLines = rawTable.split('\n');
|
|
|
|
// strip wrong first and last column if wrapped tables are used
|
|
for (i = 0; i < tableLines.length; ++i) {
|
|
if (/^ {0,3}\|/.test(tableLines[i])) {
|
|
tableLines[i] = tableLines[i].replace(/^ {0,3}\|/, '');
|
|
}
|
|
if (/\|[ \t]*$/.test(tableLines[i])) {
|
|
tableLines[i] = tableLines[i].replace(/\|[ \t]*$/, '');
|
|
}
|
|
}
|
|
|
|
var rawHeaders = tableLines[0].split('|').map(function (s) { return s.trim();}),
|
|
rawStyles = tableLines[1].split('|').map(function (s) { return s.trim();}),
|
|
rawCells = [],
|
|
headers = [],
|
|
styles = [],
|
|
cells = [];
|
|
|
|
tableLines.shift();
|
|
tableLines.shift();
|
|
|
|
for (i = 0; i < tableLines.length; ++i) {
|
|
if (tableLines[i].trim() === '') {
|
|
continue;
|
|
}
|
|
rawCells.push(
|
|
tableLines[i]
|
|
.split('|')
|
|
.map(function (s) {
|
|
return s.trim();
|
|
})
|
|
);
|
|
}
|
|
|
|
if (rawHeaders.length < rawStyles.length) {
|
|
return rawTable;
|
|
}
|
|
|
|
for (i = 0; i < rawStyles.length; ++i) {
|
|
styles.push(parseStyles(rawStyles[i]));
|
|
}
|
|
|
|
for (i = 0; i < rawHeaders.length; ++i) {
|
|
if (showdown.helper.isUndefined(styles[i])) {
|
|
styles[i] = '';
|
|
}
|
|
headers.push(parseHeaders(rawHeaders[i], styles[i]));
|
|
}
|
|
|
|
for (i = 0; i < rawCells.length; ++i) {
|
|
var row = [];
|
|
for (var ii = 0; ii < headers.length; ++ii) {
|
|
if (showdown.helper.isUndefined(rawCells[i][ii])) {
|
|
|
|
}
|
|
row.push(parseCells(rawCells[i][ii], styles[ii]));
|
|
}
|
|
cells.push(row);
|
|
}
|
|
|
|
return buildTable(headers, cells);
|
|
});
|
|
|
|
text = globals.converter._dispatch('tables.after', text, options, globals);
|
|
|
|
return text;
|
|
});
|
|
|
|
/**
|
|
* Swap back in all the special characters we've hidden.
|
|
*/
|
|
showdown.subParser('unescapeSpecialChars', function (text) {
|
|
'use strict';
|
|
|
|
text = text.replace(/~E(\d+)E/g, function (wholeMatch, m1) {
|
|
var charCodeToReplace = parseInt(m1);
|
|
return String.fromCharCode(charCodeToReplace);
|
|
});
|
|
return text;
|
|
});
|
|
|
|
var root = this;
|
|
|
|
// CommonJS/nodeJS Loader
|
|
if (typeof module !== 'undefined' && module.exports) {
|
|
module.exports = showdown;
|
|
|
|
// AMD Loader
|
|
} else if (typeof define === 'function' && define.amd) {
|
|
define(function () {
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'use strict';
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return showdown;
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});
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// Regular Browser loader
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} else {
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root.showdown = showdown;
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}
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}).call(this);
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//# sourceMappingURL=showdown.js.map
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