diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/js/data-markdown.js | 2 | ||||
| -rw-r--r-- | lib/js/showdown.js | 1281 |
2 files changed, 2 insertions, 1281 deletions
diff --git a/lib/js/data-markdown.js b/lib/js/data-markdown.js index b10592a..84398a0 100644 --- a/lib/js/data-markdown.js +++ b/lib/js/data-markdown.js @@ -1,5 +1,5 @@ // From https://gist.github.com/1343518 -// Modified by Hakim to handle markdown indented with tabs +// Modified by Hakim to handle Markdown indented with tabs (function(){ var slides = document.querySelectorAll('[data-markdown]'); diff --git a/lib/js/showdown.js b/lib/js/showdown.js index a0da114..3f280f4 100644 --- a/lib/js/showdown.js +++ b/lib/js/showdown.js @@ -17,7 +17,6 @@ // // <http://www.attacklab.net/> // - // // Wherever possible, Showdown is a straight, line-by-line port // of the Perl version of Markdown. @@ -44,8 +43,6 @@ // replace "$text" with "text". Be sure to ignore whitespace // and line endings. // - - // // Showdown usage: // @@ -59,1283 +56,7 @@ // Note: move the sample code to the bottom of this // file before uncommenting it. // - - // // Showdown namespace // -var Showdown = {}; - -// -// converter -// -// Wraps all "globals" so that the only thing -// exposed is makeHtml(). -// -Showdown.converter = function() { - -// -// Globals: -// - -// Global hashes, used by various utility routines -var g_urls; -var g_titles; -var g_html_blocks; - -// Used to track when we're inside an ordered or unordered list -// (see _ProcessListItems() for details): -var g_list_level = 0; - - -this.makeHtml = function(text) { -// -// Main function. The order in which other subs are called here is -// essential. Link and image substitutions need to happen before -// _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the <a> -// and <img> tags get encoded. -// - - // Clear the global hashes. If we don't clear these, you get conflicts - // from other articles when generating a page which contains more than - // one article (e.g. an index page that shows the N most recent - // articles): - g_urls = new Array(); - g_titles = new Array(); - g_html_blocks = new Array(); - - // attacklab: Replace ~ with ~T - // This lets us use tilde as an escape char to avoid md5 hashes - // The choice of character is arbitray; 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 - - // Make sure text begins and ends with a couple of newlines: - text = "\n\n" + text + "\n\n"; - - // Convert all tabs to spaces. - text = _Detab(text); - - // Strip any lines consisting only of spaces and tabs. - // This makes subsequent regexen easier to write, because we can - // match consecutive blank lines with /\n+/ instead of something - // contorted like /[ \t]*\n+/ . - text = text.replace(/^[ \t]+$/mg,""); - - // Handle github codeblocks prior to running HashHTML so that - // HTML contained within the codeblock gets escaped propertly - text = _DoGithubCodeBlocks(text); - - // Turn block-level HTML blocks into hash entries - text = _HashHTMLBlocks(text); - - // Strip link definitions, store in hashes. - text = _StripLinkDefinitions(text); - - text = _RunBlockGamut(text); - - text = _UnescapeSpecialChars(text); - - // attacklab: Restore dollar signs - text = text.replace(/~D/g,"$$"); - - // attacklab: Restore tildes - text = text.replace(/~T/g,"~"); - - return text; -}; - - -var _StripLinkDefinitions = function(text) { -// -// Strips link definitions from text, stores the URLs and titles in -// hash references. -// - - // Link defs are in the form: ^[id]: url "optional title" - - /* - var text = text.replace(/ - ^[ ]{0,3}\[(.+)\]: // id = $1 attacklab: g_tab_width - 1 - [ \t]* - \n? // maybe *one* newline - [ \t]* - <?(\S+?)>? // url = $2 - [ \t]* - \n? // maybe one newline - [ \t]* - (?: - (\n*) // any lines skipped = $3 attacklab: lookbehind removed - ["(] - (.+?) // title = $4 - [")] - [ \t]* - )? // title is optional - (?:\n+|$) - /gm, - function(){...}); - */ - var text = text.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|\Z)/gm, - function (wholeMatch,m1,m2,m3,m4) { - m1 = m1.toLowerCase(); - g_urls[m1] = _EncodeAmpsAndAngles(m2); // Link IDs are case-insensitive - if (m3) { - // Oops, found blank lines, so it's not a title. - // Put back the parenthetical statement we stole. - return m3+m4; - } else if (m4) { - g_titles[m1] = m4.replace(/"/g,"""); - } - - // Completely remove the definition from the text - return ""; - } - ); - - return text; -} - - -var _HashHTMLBlocks = function(text) { - // attacklab: Double up blank lines to reduce lookaround - text = text.replace(/\n/g,"\n\n"); - - // Hashify HTML blocks: - // We only want to do this for block-level HTML tags, such as headers, - // lists, and tables. That's because we still want to wrap <p>s around - // "paragraphs" that are wrapped in non-block-level tags, such as anchors, - // phrase emphasis, and spans. The list of tags we're looking for is - // hard-coded: - var block_tags_a = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del|style|section|header|footer|nav|article|aside"; - var block_tags_b = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|style|section|header|footer|nav|article|aside"; - - // First, look for nested blocks, e.g.: - // <div> - // <div> - // tags for inner block must be indented. - // </div> - // </div> - // - // The outermost tags must start at the left margin for this to match, and - // the inner nested divs must be indented. - // We need to do this before the next, more liberal match, because the next - // match will start at the first `<div>` and stop at the first `</div>`. - - // attacklab: This regex can be expensive when it fails. - /* - var text = text.replace(/ - ( // save in $1 - ^ // start of line (with /m) - <($block_tags_a) // start tag = $2 - \b // word break - // attacklab: hack around khtml/pcre bug... - [^\r]*?\n // any number of lines, minimally matching - </\2> // the matching end tag - [ \t]* // trailing spaces/tabs - (?=\n+) // followed by a newline - ) // attacklab: there are sentinel newlines at end of document - /gm,function(){...}}; - */ - text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,hashElement); - - // - // Now match more liberally, simply from `\n<tag>` to `</tag>\n` - // - - /* - var text = text.replace(/ - ( // save in $1 - ^ // start of line (with /m) - <($block_tags_b) // start tag = $2 - \b // word break - // attacklab: hack around khtml/pcre bug... - [^\r]*? // any number of lines, minimally matching - .*</\2> // the matching end tag - [ \t]* // trailing spaces/tabs - (?=\n+) // followed by a newline - ) // attacklab: there are sentinel newlines at end of document - /gm,function(){...}}; - */ - text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|style|section|header|footer|nav|article|aside)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm,hashElement); - - // Special case just for <hr />. It was easier to make a special case than - // to make the other regex more complicated. - - /* - text = text.replace(/ - ( // save in $1 - \n\n // Starting after a blank line - [ ]{0,3} - (<(hr) // start tag = $2 - \b // word break - ([^<>])*? // - \/?>) // the matching end tag - [ \t]* - (?=\n{2,}) // followed by a blank line - ) - /g,hashElement); - */ - text = text.replace(/(\n[ ]{0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,hashElement); - - // Special case for standalone HTML comments: - - /* - text = text.replace(/ - ( // save in $1 - \n\n // Starting after a blank line - [ ]{0,3} // attacklab: g_tab_width - 1 - <! - (--[^\r]*?--\s*)+ - > - [ \t]* - (?=\n{2,}) // followed by a blank line - ) - /g,hashElement); - */ - text = text.replace(/(\n\n[ ]{0,3}<!(--[^\r]*?--\s*)+>[ \t]*(?=\n{2,}))/g,hashElement); - - // PHP and ASP-style processor instructions (<?...?> and <%...%>) - - /* - text = text.replace(/ - (?: - \n\n // Starting after a blank line - ) - ( // save in $1 - [ ]{0,3} // attacklab: g_tab_width - 1 - (?: - <([?%]) // $2 - [^\r]*? - \2> - ) - [ \t]* - (?=\n{2,}) // followed by a blank line - ) - /g,hashElement); - */ - text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,hashElement); - - // attacklab: Undo double lines (see comment at top of this function) - text = text.replace(/\n\n/g,"\n"); - return text; -} - -var hashElement = function(wholeMatch,m1) { - var blockText = m1; - - // Undo double lines - blockText = blockText.replace(/\n\n/g,"\n"); - blockText = blockText.replace(/^\n/,""); - - // strip trailing blank lines - blockText = blockText.replace(/\n+$/g,""); - - // Replace the element text with a marker ("~KxK" where x is its key) - blockText = "\n\n~K" + (g_html_blocks.push(blockText)-1) + "K\n\n"; - - return blockText; -}; - -var _RunBlockGamut = function(text) { -// -// These are all the transformations that form block-level -// tags like paragraphs, headers, and list items. -// - text = _DoHeaders(text); - - // Do Horizontal Rules: - var key = hashBlock("<hr />"); - 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]*$/gm,key); - - text = _DoLists(text); - text = _DoCodeBlocks(text); - text = _DoBlockQuotes(text); - - // We already ran _HashHTMLBlocks() before, in Markdown(), but that - // was to escape raw HTML in the original Markdown source. This time, - // we're escaping the markup we've just created, so that we don't wrap - // <p> tags around block-level tags. - text = _HashHTMLBlocks(text); - text = _FormParagraphs(text); - - return text; -}; - - -var _RunSpanGamut = function(text) { -// -// These are all the transformations that occur *within* block-level -// tags like paragraphs, headers, and list items. -// - - text = _DoCodeSpans(text); - text = _EscapeSpecialCharsWithinTagAttributes(text); - text = _EncodeBackslashEscapes(text); - - // Process anchor and image tags. Images must come first, - // because ![foo][f] looks like an anchor. - text = _DoImages(text); - text = _DoAnchors(text); - - // Make links out of things like `<http://example.com/>` - // Must come after _DoAnchors(), because you can use < and > - // delimiters in inline links like [this](<url>). - text = _DoAutoLinks(text); - text = _EncodeAmpsAndAngles(text); - text = _DoItalicsAndBold(text); - - // Do hard breaks: - text = text.replace(/ +\n/g," <br />\n"); - - return text; -} - -var _EscapeSpecialCharsWithinTagAttributes = function(text) { -// -// Within tags -- meaning between < and > -- encode [\ ` * _] so they -// don't conflict with their use in Markdown for code, italics and strong. -// - - // Build a regex to find HTML tags and comments. See Friedl's - // "Mastering Regular Expressions", 2nd Ed., pp. 200-201. - var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|<!(--.*?--\s*)+>)/gi; - - text = text.replace(regex, function(wholeMatch) { - var tag = wholeMatch.replace(/(.)<\/?code>(?=.)/g,"$1`"); - tag = escapeCharacters(tag,"\\`*_"); - return tag; - }); - - return text; -} - -var _DoAnchors = function(text) { -// -// Turn Markdown link shortcuts into XHTML <a> tags. -// - // - // First, handle reference-style links: [link text] [id] - // - - /* - text = text.replace(/ - ( // wrap whole match in $1 - \[ - ( - (?: - \[[^\]]*\] // allow brackets nested one level - | - [^\[] // or anything else - )* - ) - \] - - [ ]? // one optional space - (?:\n[ ]*)? // one optional newline followed by spaces - - \[ - (.*?) // id = $3 - \] - )()()()() // pad remaining backreferences - /g,_DoAnchors_callback); - */ - text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeAnchorTag); - - // - // Next, inline-style links: [link text](url "optional title") - // - - /* - text = text.replace(/ - ( // wrap whole match in $1 - \[ - ( - (?: - \[[^\]]*\] // allow brackets nested one level - | - [^\[\]] // or anything else - ) - ) - \] - \( // literal paren - [ \t]* - () // no id, so leave $3 empty - <?(.*?)>? // href = $4 - [ \t]* - ( // $5 - (['"]) // quote char = $6 - (.*?) // Title = $7 - \6 // matching quote - [ \t]* // ignore any spaces/tabs between closing quote and ) - )? // title is optional - \) - ) - /g,writeAnchorTag); - */ - text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\]\([ \t]*()<?(.*?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeAnchorTag); - - // - // Last, 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(/ - ( // wrap whole match in $1 - \[ - ([^\[\]]+) // link text = $2; can't contain '[' or ']' - \] - )()()()()() // pad rest of backreferences - /g, writeAnchorTag); - */ - text = text.replace(/(\[([^\[\]]+)\])()()()()()/g, writeAnchorTag); - - return text; -} - -var writeAnchorTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) { - if (m7 == undefined) m7 = ""; - var whole_match = m1; - var link_text = m2; - var link_id = m3.toLowerCase(); - var url = m4; - var title = m7; - - if (url == "") { - if (link_id == "") { - // lower-case and turn embedded newlines into spaces - link_id = link_text.toLowerCase().replace(/ ?\n/g," "); - } - url = "#"+link_id; - - if (g_urls[link_id] != undefined) { - url = g_urls[link_id]; - if (g_titles[link_id] != undefined) { - title = g_titles[link_id]; - } - } - else { - if (whole_match.search(/\(\s*\)$/m)>-1) { - // Special case for explicit empty url - url = ""; - } else { - return whole_match; - } - } - } - - url = escapeCharacters(url,"*_"); - var result = "<a href=\"" + url + "\""; - - if (title != "") { - title = title.replace(/"/g,"""); - title = escapeCharacters(title,"*_"); - result += " title=\"" + title + "\""; - } - - result += ">" + link_text + "</a>"; - - return result; -} - - -var _DoImages = function(text) { -// -// Turn Markdown image shortcuts into <img> tags. -// - - // - // First, handle reference-style labeled images: ![alt text][id] - // - - /* - text = text.replace(/ - ( // wrap whole match in $1 - !\[ - (.*?) // alt text = $2 - \] - - [ ]? // one optional space - (?:\n[ ]*)? // one optional newline followed by spaces - - \[ - (.*?) // id = $3 - \] - )()()()() // pad rest of backreferences - /g,writeImageTag); - */ - text = text.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeImageTag); - - // - // Next, handle inline images:  - // Don't forget: encode * and _ - - /* - text = text.replace(/ - ( // wrap whole match in $1 - !\[ - (.*?) // alt text = $2 - \] - \s? // One optional whitespace character - \( // literal paren - [ \t]* - () // no id, so leave $3 empty - <?(\S+?)>? // src url = $4 - [ \t]* - ( // $5 - (['"]) // quote char = $6 - (.*?) // title = $7 - \6 // matching quote - [ \t]* - )? // title is optional - \) - ) - /g,writeImageTag); - */ - text = text.replace(/(!\[(.*?)\]\s?\([ \t]*()<?(\S+?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeImageTag); - - return text; -} - -var writeImageTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) { - var whole_match = m1; - var alt_text = m2; - var link_id = m3.toLowerCase(); - var url = m4; - var title = m7; - - if (!title) title = ""; - - if (url == "") { - if (link_id == "") { - // lower-case and turn embedded newlines into spaces - link_id = alt_text.toLowerCase().replace(/ ?\n/g," "); - } - url = "#"+link_id; - - if (g_urls[link_id] != undefined) { - url = g_urls[link_id]; - if (g_titles[link_id] != undefined) { - title = g_titles[link_id]; - } - } - else { - return whole_match; - } - } - - alt_text = alt_text.replace(/"/g,"""); - url = escapeCharacters(url,"*_"); - var result = "<img src=\"" + url + "\" alt=\"" + alt_text + "\""; - - // attacklab: Markdown.pl adds empty title attributes to images. - // Replicate this bug. - - //if (title != "") { - title = title.replace(/"/g,"""); - title = escapeCharacters(title,"*_"); - result += " title=\"" + title + "\""; - //} - - result += " />"; - - return result; -} - - -var _DoHeaders = function(text) { - - // Setext-style headers: - // Header 1 - // ======== - // - // Header 2 - // -------- - // - text = text.replace(/^(.+)[ \t]*\n=+[ \t]*\n+/gm, - function(wholeMatch,m1){return hashBlock('<h1 id="' + headerId(m1) + '">' + _RunSpanGamut(m1) + "</h1>");}); - - text = text.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm, - function(matchFound,m1){return hashBlock('<h2 id="' + headerId(m1) + '">' + _RunSpanGamut(m1) + "</h2>");}); - - // atx-style headers: - // # Header 1 - // ## Header 2 - // ## Header 2 with closing hashes ## - // ... - // ###### Header 6 - // - - /* - text = text.replace(/ - ^(\#{1,6}) // $1 = string of #'s - [ \t]* - (.+?) // $2 = Header text - [ \t]* - \#* // optional closing #'s (not counted) - \n+ - /gm, function() {...}); - */ - - text = text.replace(/^(\#{1,6})[ \t]*(.+?)[ \t]*\#*\n+/gm, - function(wholeMatch,m1,m2) { - var h_level = m1.length; - return hashBlock("<h" + h_level + ' id="' + headerId(m2) + '">' + _RunSpanGamut(m2) + "</h" + h_level + ">"); - }); - - function headerId(m) { - return m.replace(/[^\w]/g, '').toLowerCase(); - } - return text; -} - -// This declaration keeps Dojo compressor from outputting garbage: -var _ProcessListItems; - -var _DoLists = function(text) { -// -// Form HTML ordered (numbered) and unordered (bulleted) lists. -// - - // attacklab: add sentinel to hack around khtml/safari bug: - // http://bugs.webkit.org/show_bug.cgi?id=11231 - text += "~0"; - - // Re-usable pattern to match any entirel ul or ol list: - - /* - var whole_list = / - ( // $1 = whole list - ( // $2 - [ ]{0,3} // attacklab: g_tab_width - 1 - ([*+-]|\d+[.]) // $3 = first list item marker - [ \t]+ - ) - [^\r]+? - ( // $4 - ~0 // sentinel for workaround; should be $ - | - \n{2,} - (?=\S) - (?! // Negative lookahead for another list item marker - [ \t]* - (?:[*+-]|\d+[.])[ \t]+ - ) - ) - )/g - */ - var whole_list = /^(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm; - - if (g_list_level) { - text = text.replace(whole_list,function(wholeMatch,m1,m2) { - var list = m1; - var list_type = (m2.search(/[*+-]/g)>-1) ? "ul" : "ol"; - - // Turn double returns into triple returns, so that we can make a - // paragraph for the last item in a list, if necessary: - list = list.replace(/\n{2,}/g,"\n\n\n");; - var result = _ProcessListItems(list); - - // Trim any trailing whitespace, to put the closing `</$list_type>` - // up on the preceding line, to get it past the current stupid - // HTML block parser. This is a hack to work around the terrible - // hack that is the HTML block parser. - result = result.replace(/\s+$/,""); - result = "<"+list_type+">" + result + "</"+list_type+">\n"; - return result; - }); - } else { - whole_list = /(\n\n|^\n?)(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/g; - text = text.replace(whole_list,function(wholeMatch,m1,m2,m3) { - var runup = m1; - var list = m2; - - var list_type = (m3.search(/[*+-]/g)>-1) ? "ul" : "ol"; - // Turn double returns into triple returns, so that we can make a - // paragraph for the last item in a list, if necessary: - var list = list.replace(/\n{2,}/g,"\n\n\n");; - var result = _ProcessListItems(list); - result = runup + "<"+list_type+">\n" + result + "</"+list_type+">\n"; - return result; - }); - } - - // attacklab: strip sentinel - text = text.replace(/~0/,""); - - return text; -} - -_ProcessListItems = function(list_str) { -// -// Process the contents of a single ordered or unordered list, splitting it -// into individual list items. -// - // The $g_list_level global keeps track of when we're inside a list. - // Each time we enter a list, we increment it; when we leave a list, - // we decrement. If it's zero, we're not in a list anymore. - // - // We do this because when we're not inside a list, we want to treat - // something like this: - // - // I recommend upgrading to version - // 8. Oops, now this line is treated - // as a sub-list. - // - // As a single paragraph, despite the fact that the second line starts - // with a digit-period-space sequence. - // - // Whereas when we're inside a list (or sub-list), that line will be - // treated as the start of a sub-list. What a kludge, huh? This is - // an aspect of Markdown's syntax that's hard to parse perfectly - // without resorting to mind-reading. Perhaps the solution is to - // change the syntax rules such that sub-lists must start with a - // starting cardinal number; e.g. "1." or "a.". - - g_list_level++; - - // trim trailing blank lines: - list_str = list_str.replace(/\n{2,}$/,"\n"); - - // attacklab: add sentinel to emulate \z - list_str += "~0"; - - /* - list_str = list_str.replace(/ - (\n)? // leading line = $1 - (^[ \t]*) // leading whitespace = $2 - ([*+-]|\d+[.]) [ \t]+ // list marker = $3 - ([^\r]+? // list item text = $4 - (\n{1,2})) - (?= \n* (~0 | \2 ([*+-]|\d+[.]) [ \t]+)) - /gm, function(){...}); - */ - list_str = list_str.replace(/(\n)?(^[ \t]*)([*+-]|\d+[.])[ \t]+([^\r]+?(\n{1,2}))(?=\n*(~0|\2([*+-]|\d+[.])[ \t]+))/gm, - function(wholeMatch,m1,m2,m3,m4){ - var item = m4; - var leading_line = m1; - var leading_space = m2; - - if (leading_line || (item.search(/\n{2,}/)>-1)) { - item = _RunBlockGamut(_Outdent(item)); - } - else { - // Recursion for sub-lists: - item = _DoLists(_Outdent(item)); - item = item.replace(/\n$/,""); // chomp(item) - item = _RunSpanGamut(item); - } - - return "<li>" + item + "</li>\n"; - } - ); - - // attacklab: strip sentinel - list_str = list_str.replace(/~0/g,""); - - g_list_level--; - return list_str; -} - - -var _DoCodeBlocks = function(text) { -// -// Process Markdown `<pre><code>` blocks. -// - - /* - text = text.replace(text, - /(?:\n\n|^) - ( // $1 = the code block -- one or more lines, starting with a space/tab - (?: - (?:[ ]{4}|\t) // Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width - .*\n+ - )+ - ) - (\n*[ ]{0,3}[^ \t\n]|(?=~0)) // attacklab: g_tab_width - /g,function(){...}); - */ - - // attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug - text += "~0"; - - text = text.replace(/(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g, - function(wholeMatch,m1,m2) { - var codeblock = m1; - var nextChar = m2; - - codeblock = _EncodeCode( _Outdent(codeblock)); - codeblock = _Detab(codeblock); - codeblock = codeblock.replace(/^\n+/g,""); // trim leading newlines - codeblock = codeblock.replace(/\n+$/g,""); // trim trailing whitespace - - codeblock = "<pre><code>" + codeblock + "\n</code></pre>"; - - return hashBlock(codeblock) + nextChar; - } - ); - - // attacklab: strip sentinel - text = text.replace(/~0/,""); - - return text; -}; - -var _DoGithubCodeBlocks = function(text) { -// -// Process Github-style code blocks -// Example: -// ```ruby -// def hello_world(x) -// puts "Hello, #{x}" -// end -// ``` -// - - - // attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug - text += "~0"; - - text = text.replace(/(?:^|\n)```(.*)\n([\s\S]*?)\n```/g, - function(wholeMatch,m1,m2) { - var language = m1; - var codeblock = m2; - - codeblock = _EncodeCode(codeblock); - codeblock = _Detab(codeblock); - codeblock = codeblock.replace(/^\n+/g,""); // trim leading newlines - codeblock = codeblock.replace(/\n+$/g,""); // trim trailing whitespace - - codeblock = "<pre><code" + (language ? " class=\"" + language + '"' : "") + ">" + codeblock + "\n</code></pre>"; - - return hashBlock(codeblock); - } - ); - - // attacklab: strip sentinel - text = text.replace(/~0/,""); - - return text; -} - -var hashBlock = function(text) { - text = text.replace(/(^\n+|\n+$)/g,""); - return "\n\n~K" + (g_html_blocks.push(text)-1) + "K\n\n"; -} - -var _DoCodeSpans = function(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> ... -// - - /* - text = text.replace(/ - (^|[^\\]) // Character before opening ` can't be a backslash - (`+) // $2 = Opening run of ` - ( // $3 = The code block - [^\r]*? - [^`] // attacklab: work around lack of lookbehind - ) - \2 // Matching closer - (?!`) - /gm, function(){...}); - */ - - text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm, - function(wholeMatch,m1,m2,m3,m4) { - var c = m3; - c = c.replace(/^([ \t]*)/g,""); // leading whitespace - c = c.replace(/[ \t]*$/g,""); // trailing whitespace - c = _EncodeCode(c); - return m1+"<code>"+c+"</code>"; - }); - - return text; -} - -var _EncodeCode = function(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. -// - // 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 = escapeCharacters(text,"\*_{}[]\\",false); - -// jj the line above breaks this: -//--- - -//* Item - -// 1. Subitem - -// special char: * -//--- - - return text; -} - - -var _DoItalicsAndBold = function(text) { - - // <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>"); - - return text; -} - - -var _DoBlockQuotes = function(text) { - - /* - text = text.replace(/ - ( // Wrap whole match in $1 - ( - ^[ \t]*>[ \t]? // '>' at the start of a line - .+\n // rest of the first line - (.+\n)* // subsequent consecutive lines - \n* // blanks - )+ - ) - /gm, function(){...}); - */ - - text = text.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm, - function(wholeMatch,m1) { - var bq = m1; - - // attacklab: hack around Konqueror 3.5.4 bug: - // "----------bug".replace(/^-/g,"") == "bug" - - bq = bq.replace(/^[ \t]*>[ \t]?/gm,"~0"); // trim one level of quoting - - // attacklab: clean up hack - bq = bq.replace(/~0/g,""); - - bq = bq.replace(/^[ \t]+$/gm,""); // trim whitespace-only lines - bq = _RunBlockGamut(bq); // 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 hashBlock("<blockquote>\n" + bq + "\n</blockquote>"); - }); - return text; -} - - -var _FormParagraphs = function(text) { -// -// Params: -// $text - string to process with html <p> tags -// - - // Strip leading and trailing lines: - text = text.replace(/^\n+/g,""); - text = text.replace(/\n+$/g,""); - - var grafs = text.split(/\n{2,}/g); - var grafsOut = new Array(); - - // - // Wrap <p> tags. - // - var end = grafs.length; - for (var i=0; i<end; i++) { - var str = grafs[i]; - - // if this is an HTML marker, copy it - if (str.search(/~K(\d+)K/g) >= 0) { - grafsOut.push(str); - } - else if (str.search(/\S/) >= 0) { - str = _RunSpanGamut(str); - str = str.replace(/^([ \t]*)/g,"<p>"); - str += "</p>" - grafsOut.push(str); - } - - } - - // - // Unhashify HTML blocks - // - end = grafsOut.length; - for (var i=0; i<end; i++) { - // if this is a marker for an html block... - while (grafsOut[i].search(/~K(\d+)K/) >= 0) { - var blockText = g_html_blocks[RegExp.$1]; - blockText = blockText.replace(/\$/g,"$$$$"); // Escape any dollar signs - grafsOut[i] = grafsOut[i].replace(/~K\d+K/,blockText); - } - } - - return grafsOut.join("\n\n"); -} - - -var _EncodeAmpsAndAngles = function(text) { -// Smart processing for ampersands and angle brackets that need to be encoded. - - // 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; -} - - -var _EncodeBackslashEscapes = function(text) { -// -// Parameter: String. -// 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. - - text = text.replace(/\\(\\)/g,escapeCharacters_callback); - text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g,escapeCharacters_callback); - return text; -} - - -var _DoAutoLinks = function(text) { - - text = text.replace(/<((https?|ftp|dict):[^'">\s]+)>/gi,"<a href=\"$1\">$1</a>"); - - // Email addresses: <address@domain.foo> - - /* - text = text.replace(/ - < - (?:mailto:)? - ( - [-.\w]+ - \@ - [-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+ - ) - > - /gi, _DoAutoLinks_callback()); - */ - text = text.replace(/<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi, - function(wholeMatch,m1) { - return _EncodeEmailAddress( _UnescapeSpecialChars(m1) ); - } - ); - - return text; -} - - -var _EncodeEmailAddress = function(addr) { -// -// 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> -// - - // attacklab: why can't javascript speak hex? - function char2hex(ch) { - var hexDigits = '0123456789ABCDEF'; - var dec = ch.charCodeAt(0); - return(hexDigits.charAt(dec>>4) + hexDigits.charAt(dec&15)); - } - - var encode = [ - function(ch){return "&#"+ch.charCodeAt(0)+";";}, - function(ch){return "&#x"+char2hex(ch)+";";}, - 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 > .9 ? encode[2](ch) : - r > .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; -} - - -var _UnescapeSpecialChars = function(text) { -// -// Swap back in all the special characters we've hidden. -// - text = text.replace(/~E(\d+)E/g, - function(wholeMatch,m1) { - var charCodeToReplace = parseInt(m1); - return String.fromCharCode(charCodeToReplace); - } - ); - return text; -} - - -var _Outdent = function(text) { -// -// Remove one level of line-leading tabs or spaces -// - - // 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; -} - -var _Detab = function(text) { -// attacklab: Detab's completely rewritten for speed. -// In perl we could fix it by anchoring the regexp with \G. -// In javascript we're less fortunate. - - // expand first n-1 tabs - text = text.replace(/\t(?=\t)/g," "); // attacklab: 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,m2) { - var leadingText = m1; - var numSpaces = 4 - leadingText.length % 4; // attacklab: 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," "); // attacklab: g_tab_width - text = text.replace(/~B/g,""); - - return text; -} - - -// -// attacklab: Utility functions -// - - -var escapeCharacters = function(text, charsToEscape, afterBackslash) { - // 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,escapeCharacters_callback); - - return text; -} - - -var escapeCharacters_callback = function(wholeMatch,m1) { - var charCodeToEscape = m1.charCodeAt(0); - return "~E"+charCodeToEscape+"E"; -} - -} // end of Showdown.converter - -// export -if (typeof module !== 'undefined') module.exports = Showdown;
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