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authorCheng-Han, Wu2016-02-24 10:03:35 +0800
committerCheng-Han, Wu2016-02-24 10:03:35 +0800
commit1da0b87714e725dcd540f389b118c581fd93ccb7 (patch)
treee9b94733dc4cefdbdd0553cf91a4af287eeb0626 /public/vendor
parentc509abbc395553bc2c09052a715c2339fd4a7a0e (diff)
Updated and fixed mathjax parsing, now using full featured plugin
Diffstat (limited to '')
-rw-r--r--public/vendor/markdown-it-mathjax.js120
1 files changed, 120 insertions, 0 deletions
diff --git a/public/vendor/markdown-it-mathjax.js b/public/vendor/markdown-it-mathjax.js
new file mode 100644
index 00000000..01c6fa43
--- /dev/null
+++ b/public/vendor/markdown-it-mathjax.js
@@ -0,0 +1,120 @@
+// modified from https://github.com/classeur/markdown-it-mathjax
+
+(function(root, factory) {
+ if (typeof exports === 'object') {
+ module.exports = factory()
+ } else {
+ root.markdownitMathjax = factory()
+ }
+})(this, function() {
+ function math(state, silent) {
+ var startMathPos = state.pos
+ if (state.src.charCodeAt(startMathPos) !== 0x5C /* \ */) {
+ return false
+ }
+ var match = state.src.slice(++startMathPos).match(/^(?:\\\[|\\\(|begin\{([^}]*)\})/)
+ if (!match) {
+ return false
+ }
+ startMathPos += match[0].length
+ var type, endMarker, includeMarkers
+ if (match[0] === '\\[') {
+ type = 'display_math'
+ endMarker = '\\\\]'
+ } else if (match[0] === '\\(') {
+ type = 'inline_math'
+ endMarker = '\\\\)'
+ } else if (match[1]) {
+ type = 'math'
+ endMarker = '\\end{' + match[1] + '}'
+ includeMarkers = true
+ }
+ var endMarkerPos = state.src.indexOf(endMarker, startMathPos)
+ if (endMarkerPos === -1) {
+ return false
+ }
+ var nextPos = endMarkerPos + endMarker.length
+ if (!silent) {
+ var token = state.push(type + '_open', 'span', 1);
+ token.attrs = [ ['class', 'mathjax raw'] ];
+ token = state.push(type, '', 0);
+ token.content = includeMarkers ?
+ state.src.slice(state.pos, nextPos) : state.src.slice(startMathPos, endMarkerPos)
+ token = state.push(type + '_close', 'span', -1);
+ }
+ state.pos = nextPos
+ return true
+ }
+
+ function texMath(state, silent) {
+ var startMathPos = state.pos
+ if (state.src.charCodeAt(startMathPos) !== 0x24 /* $ */) {
+ return false
+ }
+
+ // Parse tex math according to http://pandoc.org/README.html#math
+ var endMarker = '$'
+ var afterStartMarker = state.src.charCodeAt(++startMathPos)
+ if (afterStartMarker === 0x24 /* $ */) {
+ endMarker = '$$'
+ if (state.src.charCodeAt(++startMathPos) === 0x24 /* $ */) {
+ // 3 markers are too much
+ return false
+ }
+ } else {
+ // Skip if opening $ is succeeded by a space character
+ if (afterStartMarker === 0x20 /* space */ || afterStartMarker === 0x09 /* \t */ || afterStartMarker === 0x0a /* \n */) {
+ return false
+ }
+ }
+ var endMarkerPos = state.src.indexOf(endMarker, startMathPos)
+ if (endMarkerPos === -1) {
+ return false
+ }
+ if (state.src.charCodeAt(endMarkerPos - 1) === 0x5C /* \ */) {
+ return false
+ }
+ var nextPos = endMarkerPos + endMarker.length
+ if (endMarker.length === 1) {
+ // Skip if $ is preceded by a space character
+ var beforeEndMarker = state.src.charCodeAt(endMarkerPos - 1)
+ if (beforeEndMarker === 0x20 /* space */ || beforeEndMarker === 0x09 /* \t */ || beforeEndMarker === 0x0a /* \n */) {
+ return false
+ }
+ // Skip if closing $ is succeeded by a digit (eg $5 $10 ...)
+ var suffix = state.src.charCodeAt(nextPos)
+ if (suffix >= 0x30 && suffix < 0x3A) {
+ return false
+ }
+ }
+
+ if (!silent) {
+ var type = endMarker.length === 1 ? 'inline_math' : 'display_math';
+ var token = state.push(type + '_open', 'span', 1)
+ token.attrs = [ ['class', 'mathjax raw'] ]
+ token = state.push(type, '', 0);
+ token.content = state.src.slice(startMathPos, endMarkerPos);
+ token = state.push(type + '_close', 'span', -1);
+ }
+ state.pos = nextPos
+ return true
+ }
+
+ function escapeHtml(html) {
+ return html.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/\u00a0/g, ' ')
+ }
+
+ return function(md) {
+ md.inline.ruler.before('escape', 'math', math)
+ md.inline.ruler.push('texMath', texMath)
+ md.renderer.rules.math = function(tokens, idx) {
+ return escapeHtml(tokens[idx].content)
+ }
+ md.renderer.rules.inline_math = function(tokens, idx) {
+ return '\\(' + escapeHtml(tokens[idx].content) + '\\)'
+ }
+ md.renderer.rules.display_math = function(tokens, idx) {
+ return '\\[' + escapeHtml(tokens[idx].content) + '\\]'
+ }
+ }
+})