'use strict';
/**
* Local dependencies
*/
var has = require('./common/utils').has;
var unescapeMd = require('./common/utils').unescapeMd;
var replaceEntities = require('./common/utils').replaceEntities;
var escapeHtml = require('./common/utils').escapeHtml;
/**
* Renderer rules cache
*/
var rules = {};
/**
* Blockquotes
*/
rules.blockquote_open = function(/* tokens, idx, options, env */) {
return '
\n';
};
rules.blockquote_close = function(tokens, idx /*, options, env */) {
return '
' + getBreak(tokens, idx);
};
/**
* Code
*/
rules.code = function(tokens, idx /*, options, env */) {
if (tokens[idx].block) {
return '' + escapeHtml(tokens[idx].content) + '
' + getBreak(tokens, idx);
}
return '' + escapeHtml(tokens[idx].content) + '
';
};
/**
* Fenced code blocks
*/
rules.fence = function(tokens, idx, options, env, instance) {
var token = tokens[idx];
var langClass = '';
var langPrefix = options.langPrefix;
var langName = '', fences, fenceName;
var highlighted;
if (token.params) {
//
// ```foo bar
//
// Try custom renderer "foo" first. That will simplify overwrite
// for diagrams, latex, and any other fenced block with custom look
//
fences = token.params.split(/\s+/g);
fenceName = fences.join(' ');
if (has(instance.rules.fence_custom, fences[0])) {
return instance.rules.fence_custom[fences[0]](tokens, idx, options, env, instance);
}
langName = escapeHtml(replaceEntities(unescapeMd(fenceName)));
langClass = ' class="' + langPrefix + langName + '"';
}
if (options.highlight) {
highlighted = options.highlight.apply(options.highlight, [ token.content ].concat(fences))
|| escapeHtml(token.content);
} else {
highlighted = escapeHtml(token.content);
}
return ''
+ highlighted
+ '
'
+ getBreak(tokens, idx);
};
rules.fence_custom = {};
/**
* Headings
*/
rules.heading_open = function(tokens, idx /*, options, env */) {
return '';
};
rules.heading_close = function(tokens, idx /*, options, env */) {
return '\n';
};
/**
* Horizontal rules
*/
rules.hr = function(tokens, idx, options /*, env */) {
return (options.xhtmlOut ? '
' : '
') + getBreak(tokens, idx);
};
/**
* Bullets
*/
rules.bullet_list_open = function(/* tokens, idx, options, env */) {
return '\n';
};
rules.bullet_list_close = function(tokens, idx /*, options, env */) {
return '
' + getBreak(tokens, idx);
};
/**
* List items
*/
rules.list_item_open = function(/* tokens, idx, options, env */) {
return '';
};
rules.list_item_close = function(/* tokens, idx, options, env */) {
return '\n';
};
/**
* Ordered list items
*/
rules.ordered_list_open = function(tokens, idx /*, options, env */) {
var token = tokens[idx];
var order = token.order > 1 ? ' start="' + token.order + '"' : '';
return '\n';
};
rules.ordered_list_close = function(tokens, idx /*, options, env */) {
return '
' + getBreak(tokens, idx);
};
/**
* Paragraphs
*/
rules.paragraph_open = function(tokens, idx /*, options, env */) {
return tokens[idx].tight ? '' : '';
};
rules.paragraph_close = function(tokens, idx /*, options, env */) {
var addBreak = !(tokens[idx].tight && idx && tokens[idx - 1].type === 'inline' && !tokens[idx - 1].content);
return (tokens[idx].tight ? '' : '
') + (addBreak ? getBreak(tokens, idx) : '');
};
/**
* Links
*/
rules.link_open = function(tokens, idx, options /* env */) {
var title = tokens[idx].title ? (' title="' + escapeHtml(replaceEntities(tokens[idx].title)) + '"') : '';
var target = options.linkTarget ? (' target="' + options.linkTarget + '"') : '';
return '';
};
rules.link_close = function(/* tokens, idx, options, env */) {
return '';
};
/**
* Images
*/
rules.image = function(tokens, idx, options /*, env */) {
var src = ' src="' + escapeHtml(tokens[idx].src) + '"';
var title = tokens[idx].title ? (' title="' + escapeHtml(replaceEntities(tokens[idx].title)) + '"') : '';
var alt = ' alt="' + (tokens[idx].alt ? escapeHtml(replaceEntities(unescapeMd(tokens[idx].alt))) : '') + '"';
var suffix = options.xhtmlOut ? ' /' : '';
return '
';
};
/**
* Tables
*/
rules.table_open = function(/* tokens, idx, options, env */) {
return '\n';
};
rules.table_close = function(/* tokens, idx, options, env */) {
return '
\n';
};
rules.thead_open = function(/* tokens, idx, options, env */) {
return '\n';
};
rules.thead_close = function(/* tokens, idx, options, env */) {
return '\n';
};
rules.tbody_open = function(/* tokens, idx, options, env */) {
return '\n';
};
rules.tbody_close = function(/* tokens, idx, options, env */) {
return '\n';
};
rules.tr_open = function(/* tokens, idx, options, env */) {
return '';
};
rules.tr_close = function(/* tokens, idx, options, env */) {
return '
\n';
};
rules.th_open = function(tokens, idx /*, options, env */) {
var token = tokens[idx];
return '';
};
rules.th_close = function(/* tokens, idx, options, env */) {
return ' | ';
};
rules.td_open = function(tokens, idx /*, options, env */) {
var token = tokens[idx];
return '';
};
rules.td_close = function(/* tokens, idx, options, env */) {
return ' | ';
};
/**
* Bold
*/
rules.strong_open = function(/* tokens, idx, options, env */) {
return '';
};
rules.strong_close = function(/* tokens, idx, options, env */) {
return '';
};
/**
* Italicize
*/
rules.em_open = function(/* tokens, idx, options, env */) {
return '';
};
rules.em_close = function(/* tokens, idx, options, env */) {
return '';
};
/**
* Strikethrough
*/
rules.del_open = function(/* tokens, idx, options, env */) {
return '';
};
rules.del_close = function(/* tokens, idx, options, env */) {
return '';
};
/**
* Insert
*/
rules.ins_open = function(/* tokens, idx, options, env */) {
return '';
};
rules.ins_close = function(/* tokens, idx, options, env */) {
return '';
};
/**
* Highlight
*/
rules.mark_open = function(/* tokens, idx, options, env */) {
return '';
};
rules.mark_close = function(/* tokens, idx, options, env */) {
return '';
};
/**
* Super- and sub-script
*/
rules.sub = function(tokens, idx /*, options, env */) {
return '' + escapeHtml(tokens[idx].content) + '';
};
rules.sup = function(tokens, idx /*, options, env */) {
return '' + escapeHtml(tokens[idx].content) + '';
};
/**
* Breaks
*/
rules.hardbreak = function(tokens, idx, options /*, env */) {
return options.xhtmlOut ? '
\n' : '
\n';
};
rules.softbreak = function(tokens, idx, options /*, env */) {
return options.breaks ? (options.xhtmlOut ? '
\n' : '
\n') : '\n';
};
/**
* Text
*/
rules.text = function(tokens, idx /*, options, env */) {
return escapeHtml(tokens[idx].content);
};
/**
* Content
*/
rules.htmlblock = function(tokens, idx /*, options, env */) {
return tokens[idx].content;
};
rules.htmltag = function(tokens, idx /*, options, env */) {
return tokens[idx].content;
};
/**
* Abbreviations, initialism
*/
rules.abbr_open = function(tokens, idx /*, options, env */) {
return '';
};
rules.abbr_close = function(/* tokens, idx, options, env */) {
return '';
};
/**
* Footnotes
*/
rules.footnote_ref = function(tokens, idx) {
var n = Number(tokens[idx].id + 1).toString();
var id = 'fnref' + n;
if (tokens[idx].subId > 0) {
id += ':' + tokens[idx].subId;
}
return '';
};
rules.footnote_block_open = function(tokens, idx, options) {
var hr = options.xhtmlOut
? '\n'
: '\n';
return hr + '\n';
};
rules.footnote_open = function(tokens, idx) {
var id = Number(tokens[idx].id + 1).toString();
return '\n';
};
rules.footnote_anchor = function(tokens, idx) {
var n = Number(tokens[idx].id + 1).toString();
var id = 'fnref' + n;
if (tokens[idx].subId > 0) {
id += ':' + tokens[idx].subId;
}
return ' ';
};
/**
* Definition lists
*/
rules.dl_open = function() {
return '\n';
};
rules.dt_open = function() {
return '- ';
};
rules.dd_open = function() {
return '
- ';
};
rules.dl_close = function() {
return '
\n';
};
rules.dt_close = function() {
return '\n';
};
rules.dd_close = function() {
return '\n';
};
/**
* Helper functions
*/
function nextToken(tokens, idx) {
if (++idx >= tokens.length - 2) {
return idx;
}
if ((tokens[idx].type === 'paragraph_open' && tokens[idx].tight) &&
(tokens[idx + 1].type === 'inline' && tokens[idx + 1].content.length === 0) &&
(tokens[idx + 2].type === 'paragraph_close' && tokens[idx + 2].tight)) {
return nextToken(tokens, idx + 2);
}
return idx;
}
/**
* Check to see if `\n` is needed before the next token.
*
* @param {Array} `tokens`
* @param {Number} `idx`
* @return {String} Empty string or newline
* @api private
*/
var getBreak = rules.getBreak = function getBreak(tokens, idx) {
idx = nextToken(tokens, idx);
if (idx < tokens.length && tokens[idx].type === 'list_item_close') {
return '';
}
return '\n';
};
/**
* Expose `rules`
*/
module.exports = rules;