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https://github.com/twisterarmy/twister-html.git
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text markdown with *bold*, ~italic~, _underlined_ and -strikethrough-
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79237470d8
commit
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@ -226,6 +226,133 @@ function htmlFormatMsg(msg, mentions) {
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return i;
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}
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function markdown(str, chr, tag) {
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function whiteSpace(i, j) {
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j++;
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for (i += 1; i < j; i++) {
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if (p[i].w)
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return true;
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}
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return false;
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}
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var i, j, t;
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var w = false;
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var p = [];
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// collecting chars position data
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for (i = 0; i < str.length; i++) {
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if (str[i] === chr) {
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for (j = i + 1; j < str.length; j++) {
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if (str[j] !== chr)
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break;
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}
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if (whiteSpaces.indexOf(str[i - 1]) === -1 || whiteSpaces.indexOf(str[j]) === -1) {
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if (whiteSpaces.indexOf(str[i - 1]) > -1 || i === 0)
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t = -1;
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else if (whiteSpaces.indexOf(str[j]) > -1 || i === str.length - 1)
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t = 1;
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else if (stopCharsMarkDown.indexOf(str[i - 1]) > -1) {
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if (stopCharsMarkDown.indexOf(str[j]) === -1)
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t = -1;
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else {
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for (t = j + 1; t < str.length; t++) {
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if (whiteSpaces.indexOf(str[t]) > -1) {
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if ((2 * j - t) < 0 || whiteSpaces.indexOf(str[2 * j - t]) === -1) {
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t = 1;
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break;
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}
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} else if (stopCharsMarkDown.indexOf(str[t]) === -1) {
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if ((2 * j - t) < 0 || whiteSpaces.indexOf(str[2 * j - t]) > -1) {
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t = -1;
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break;
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}
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}
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}
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if (t = str.length)
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t = 1;
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}
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} else if (stopCharsMarkDown.indexOf(str[j]) > -1)
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t = 1;
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else
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t = 0;
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p.push({i: i, k: j - i, t: t, w: w, a: -1, p: -1});
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w = false;
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}
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i = j;
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} else if (!w && whiteSpaces.indexOf(str[i]) > -1) {
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w = true;
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}
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}
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// calculating dependencies
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for (i = 0; i < p.length; i++) {
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if (p[i].t < 1 && p[i].a === -1) {
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t = i;
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for (j = i + 1; j < p.length; j++) {
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if (p[i].t === 0 && whiteSpace(i, j)) {
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i = j - 1;
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break;
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} else if (p[j].t < 1 && p[j].a === -1) {
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p[t].p = j;
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t = j;
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} else if (p[j].t === 1 && p[j].a === -1) {
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p[i].a = j;
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p[j].a = i;
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i = j;
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break;
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}
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}
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}
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}
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for (i = 0; i < p.length; i++) {
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if (p[i].t === -1 && p[i].a === -1) {
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for (j = p[i].p; j > -1; j = p[j].p) {
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if (whiteSpace(i, j)) {
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i = j - 1;
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break;
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} else if (p[j].t === 0
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&& !(p[j].p > -1 && p[p[j].p].t === 0 && !whiteSpace(j, p[j].p))) {
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p[j].a = i;
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p[i].a = j;
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i = j;
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break;
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}
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}
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}
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}
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// changing the string
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for (i = 0; i < p.length; i++) {
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if (p[i].a > -1) {
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if (p[i].t === -1 || (p[i].t === 0 && p[i].a > i)) {
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if (p[i].k > 1)
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html.push('<' + tag + '>' + Array(p[i].k).join(chr));
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else
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html.push('<' + tag + '>');
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} else if (p[i].t === 1 || (p[i].t === 0 && p[i].a < i)) {
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if (p[i].k > 1)
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html.push(Array(p[i].k).join(chr) + '</' + tag + '>');
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else
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html.push('</' + tag + '>');
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} else {
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if (p[i].k > 1)
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html.push(Array(p[i].k + 1).join(chr));
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else
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html.push(chr);
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}
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strEncoded = '>' + (html.length - 1).toString() + '<';
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str = str.slice(0, p[i].i) + strEncoded + str.slice(p[i].i + p[i].k);
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l = strEncoded.length - p[i].k;
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for (j = i + 1; j < p.length; j++)
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p[j].i += l;
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}
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}
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return str;
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}
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function htmlSplitCounter(str) {
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html.push('<span class="splited-post-counter">' + str + '</span>');
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@ -233,12 +360,13 @@ function htmlFormatMsg(msg, mentions) {
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}
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var mentionsChars = 'abcdefghijklmnopqrstuvwxyz_0123456789';
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var stopCharsTrailing = '/\\.,:;?!*%\'"[](){}^|«»…\u201C\u201D\u2026\u2014\u4E00\u3002\uFF0C\uFF1A\uFF1F\uFF01\u3010\u3011';
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var stopCharsTrailing = '/\\*.,:;?!%\'"[](){}^|«»…\u201C\u201D\u2026\u2014\u4E00\u3002\uFF0C\uFF1A\uFF1F\uFF01\u3010\u3011';
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var stopCharsTrailingUrl = stopCharsTrailing.slice(1);
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var whiteSpaces = ' \f\n\r\t\v\u00A0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000';
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var stopCharsLeft = '<' + whiteSpaces;
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var stopCharsRight = '>' + whiteSpaces;
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var stopCharsRightHashtags = stopCharsRight + stopCharsTrailing;
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var stopCharsMarkDown = '~_-+=<>&' + stopCharsTrailing + whiteSpaces;
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var j, str, strEncoded;
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var html = [];
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@ -340,7 +468,11 @@ function htmlFormatMsg(msg, mentions) {
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}
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}
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msg = msg
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msg = markdown(markdown(markdown(markdown(msg,
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'*', 'b'), // bold
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'~', 'i'), // italic
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'_', 'u'), // underlined
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'-', 's') // striketrough
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.replace(/\(\d{1,2}\/\d{1,2}\)$/, htmlSplitCounter)
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.replace(/&(?!lt;|gt;)/g, '&') // FIXME in many cases there is no need to escape ampersand in HTML 5
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.replace(/"/g, '"')
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@ -363,11 +495,8 @@ function htmlFormatMsg(msg, mentions) {
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msg = msg.replace(/\n/g, '<br />');
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// TODO: add options for emotions; msg = $.emotions(msg);
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// TODO: add at least basic markdown (optional) with syntax like this:
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// *text* -> bold text
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// ~text~ -> italic text
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// _text_ -> underlined text
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// -text- -> strikethrough text
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// TODO make markdown optionally mutable ?
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// some escaping tag
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return msg;
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}
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