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-rw-r--r--library/markdownify/markdownify_extra.php489
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diff --git a/library/markdownify/markdownify_extra.php b/library/markdownify/markdownify_extra.php
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-<?php
-/**
- * Class to convert HTML to Markdown with PHP Markdown Extra syntax support.
- *
- * @version 1.0.0 alpha
- * @author Milian Wolff (<mail@milianw.de>, <http://milianw.de>)
- * @license LGPL, see LICENSE_LGPL.txt and the summary below
- * @copyright (C) 2007 Milian Wolff
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * standard Markdownify class
- */
-require_once dirname(__FILE__).'/markdownify.php';
-
-class Markdownify_Extra extends Markdownify {
- /**
- * table data, including rows with content and the maximum width of each col
- *
- * @var array
- */
- var $table = array();
- /**
- * current col
- *
- * @var int
- */
- var $col = -1;
- /**
- * current row
- *
- * @var int
- */
- var $row = 0;
- /**
- * constructor, see Markdownify::Markdownify() for more information
- */
- function Markdownify_Extra($linksAfterEachParagraph = MDFY_LINKS_EACH_PARAGRAPH, $bodyWidth = MDFY_BODYWIDTH, $keepHTML = MDFY_KEEPHTML) {
- parent::Markdownify($linksAfterEachParagraph, $bodyWidth, $keepHTML);
-
- ### new markdownable tags & attributes
- # header ids: # foo {bar}
- $this->isMarkdownable['h1']['id'] = 'optional';
- $this->isMarkdownable['h2']['id'] = 'optional';
- $this->isMarkdownable['h3']['id'] = 'optional';
- $this->isMarkdownable['h4']['id'] = 'optional';
- $this->isMarkdownable['h5']['id'] = 'optional';
- $this->isMarkdownable['h6']['id'] = 'optional';
- # tables
- $this->isMarkdownable['table'] = array();
- $this->isMarkdownable['th'] = array(
- 'align' => 'optional',
- );
- $this->isMarkdownable['td'] = array(
- 'align' => 'optional',
- );
- $this->isMarkdownable['tr'] = array();
- array_push($this->ignore, 'thead');
- array_push($this->ignore, 'tbody');
- array_push($this->ignore, 'tfoot');
- # definition lists
- $this->isMarkdownable['dl'] = array();
- $this->isMarkdownable['dd'] = array();
- $this->isMarkdownable['dt'] = array();
- # footnotes
- $this->isMarkdownable['fnref'] = array(
- 'target' => 'required',
- );
- $this->isMarkdownable['footnotes'] = array();
- $this->isMarkdownable['fn'] = array(
- 'name' => 'required',
- );
- $this->parser->blockElements['fnref'] = false;
- $this->parser->blockElements['fn'] = true;
- $this->parser->blockElements['footnotes'] = true;
- # abbr
- $this->isMarkdownable['abbr'] = array(
- 'title' => 'required',
- );
- # build RegEx lookahead to decide wether table can pe parsed or not
- $inlineTags = array_keys($this->parser->blockElements, false);
- $colContents = '(?:[^<]|<(?:'.implode('|', $inlineTags).'|[^a-z]))+';
- $this->tableLookaheadHeader = '{
- ^\s*(?:<thead\s*>)?\s* # open optional thead
- <tr\s*>\s*(?: # start required row with headers
- <th(?:\s+align=("|\')(?:left|center|right)\1)?\s*> # header with optional align
- \s*'.$colContents.'\s* # contents
- </th>\s* # close header
- )+</tr> # close row with headers
- \s*(?:</thead>)? # close optional thead
- }sxi';
- $this->tdSubstitute = '\s*'.$colContents.'\s* # contents
- </td>\s*';
- $this->tableLookaheadBody = '{
- \s*(?:<tbody\s*>)?\s* # open optional tbody
- (?:<tr\s*>\s* # start row
- %s # cols to be substituted
- </tr>)+ # close row
- \s*(?:</tbody>)? # close optional tbody
- \s*</table> # close table
- }sxi';
- }
- /**
- * handle header tags (<h1> - <h6>)
- *
- * @param int $level 1-6
- * @return void
- */
- function handleHeader($level) {
- static $id = null;
- if ($this->parser->isStartTag) {
- if (isset($this->parser->tagAttributes['id'])) {
- $id = $this->parser->tagAttributes['id'];
- }
- } else {
- if (!is_null($id)) {
- $this->out(' {#'.$id.'}');
- $id = null;
- }
- }
- parent::handleHeader($level);
- }
- /**
- * handle <abbr> tags
- *
- * @param void
- * @return void
- */
- function handleTag_abbr() {
- if ($this->parser->isStartTag) {
- $this->stack();
- $this->buffer();
- } else {
- $tag = $this->unstack();
- $tag['text'] = $this->unbuffer();
- $add = true;
- foreach ($this->stack['abbr'] as $stacked) {
- if ($stacked['text'] == $tag['text']) {
- /** TODO: differing abbr definitions, i.e. different titles for same text **/
- $add = false;
- break;
- }
- }
- $this->out($tag['text']);
- if ($add) {
- array_push($this->stack['abbr'], $tag);
- }
- }
- }
- /**
- * flush stacked abbr tags
- *
- * @param void
- * @return void
- */
- function flushStacked_abbr() {
- $out = array();
- foreach ($this->stack['abbr'] as $k => $tag) {
- if (!isset($tag['unstacked'])) {
- array_push($out, ' *['.$tag['text'].']: '.$tag['title']);
- $tag['unstacked'] = true;
- $this->stack['abbr'][$k] = $tag;
- }
- }
- if (!empty($out)) {
- $this->out("\n\n".implode("\n", $out));
- }
- }
- /**
- * handle <table> tags
- *
- * @param void
- * @return void
- */
- function handleTag_table() {
- if ($this->parser->isStartTag) {
- # check if upcoming table can be converted
- if ($this->keepHTML) {
- if (preg_match($this->tableLookaheadHeader, $this->parser->html, $matches)) {
- # header seems good, now check body
- # get align & number of cols
- preg_match_all('#<th(?:\s+align=("|\')(left|right|center)\1)?\s*>#si', $matches[0], $cols);
- $regEx = '';
- $i = 1;
- $aligns = array();
- foreach ($cols[2] as $align) {
- $align = strtolower($align);
- array_push($aligns, $align);
- if (empty($align)) {
- $align = 'left'; # default value
- }
- $td = '\s+align=("|\')'.$align.'\\'.$i;
- $i++;
- if ($align == 'left') {
- # look for empty align or left
- $td = '(?:'.$td.')?';
- }
- $td = '<td'.$td.'\s*>';
- $regEx .= $td.$this->tdSubstitute;
- }
- $regEx = sprintf($this->tableLookaheadBody, $regEx);
- if (preg_match($regEx, $this->parser->html, $matches, null, strlen($matches[0]))) {
- # this is a markdownable table tag!
- $this->table = array(
- 'rows' => array(),
- 'col_widths' => array(),
- 'aligns' => $aligns,
- );
- $this->row = 0;
- } else {
- # non markdownable table
- $this->handleTagToText();
- }
- } else {
- # non markdownable table
- $this->handleTagToText();
- }
- } else {
- $this->table = array(
- 'rows' => array(),
- 'col_widths' => array(),
- 'aligns' => array(),
- );
- $this->row = 0;
- }
- } else {
- # finally build the table in Markdown Extra syntax
- $separator = array();
- # seperator with correct align identifikators
- foreach($this->table['aligns'] as $col => $align) {
- if (!$this->keepHTML && !isset($this->table['col_widths'][$col])) {
- break;
- }
- $left = ' ';
- $right = ' ';
- switch ($align) {
- case 'left':
- $left = ':';
- break;
- case 'center':
- $right = ':';
- $left = ':';
- case 'right':
- $right = ':';
- break;
- }
- array_push($separator, $left.str_repeat('-', $this->table['col_widths'][$col]).$right);
- }
- $separator = '|'.implode('|', $separator).'|';
-
- $rows = array();
- # add padding
- array_walk_recursive($this->table['rows'], array(&$this, 'alignTdContent'));
- $header = array_shift($this->table['rows']);
- array_push($rows, '| '.implode(' | ', $header).' |');
- array_push($rows, $separator);
- foreach ($this->table['rows'] as $row) {
- array_push($rows, '| '.implode(' | ', $row).' |');
- }
- $this->out(implode("\n".$this->indent, $rows));
- $this->table = array();
- $this->setLineBreaks(2);
- }
- }
- /**
- * properly pad content so it is aligned as whished
- * should be used with array_walk_recursive on $this->table['rows']
- *
- * @param string &$content
- * @param int $col
- * @return void
- */
- function alignTdContent(&$content, $col) {
- switch ($this->table['aligns'][$col]) {
- default:
- case 'left':
- $content .= str_repeat(' ', $this->table['col_widths'][$col] - $this->strlen($content));
- break;
- case 'right':
- $content = str_repeat(' ', $this->table['col_widths'][$col] - $this->strlen($content)).$content;
- break;
- case 'center':
- $paddingNeeded = $this->table['col_widths'][$col] - $this->strlen($content);
- $left = floor($paddingNeeded / 2);
- $right = $paddingNeeded - $left;
- $content = str_repeat(' ', $left).$content.str_repeat(' ', $right);
- break;
- }
- }
- /**
- * handle <tr> tags
- *
- * @param void
- * @return void
- */
- function handleTag_tr() {
- if ($this->parser->isStartTag) {
- $this->col = -1;
- } else {
- $this->row++;
- }
- }
- /**
- * handle <td> tags
- *
- * @param void
- * @return void
- */
- function handleTag_td() {
- if ($this->parser->isStartTag) {
- $this->col++;
- if (!isset($this->table['col_widths'][$this->col])) {
- $this->table['col_widths'][$this->col] = 0;
- }
- $this->buffer();
- } else {
- $buffer = trim($this->unbuffer());
- $this->table['col_widths'][$this->col] = max($this->table['col_widths'][$this->col], $this->strlen($buffer));
- $this->table['rows'][$this->row][$this->col] = $buffer;
- }
- }
- /**
- * handle <th> tags
- *
- * @param void
- * @return void
- */
- function handleTag_th() {
- if (!$this->keepHTML && !isset($this->table['rows'][1]) && !isset($this->table['aligns'][$this->col+1])) {
- if (isset($this->parser->tagAttributes['align'])) {
- $this->table['aligns'][$this->col+1] = $this->parser->tagAttributes['align'];
- } else {
- $this->table['aligns'][$this->col+1] = '';
- }
- }
- $this->handleTag_td();
- }
- /**
- * handle <dl> tags
- *
- * @param void
- * @return void
- */
- function handleTag_dl() {
- if (!$this->parser->isStartTag) {
- $this->setLineBreaks(2);
- }
- }
- /**
- * handle <dt> tags
- *
- * @param void
- * @return void
- **/
- function handleTag_dt() {
- if (!$this->parser->isStartTag) {
- $this->setLineBreaks(1);
- }
- }
- /**
- * handle <dd> tags
- *
- * @param void
- * @return void
- */
- function handleTag_dd() {
- if ($this->parser->isStartTag) {
- if (substr(ltrim($this->parser->html), 0, 3) == '<p>') {
- # next comes a paragraph, so we'll need an extra line
- $this->out("\n".$this->indent);
- } elseif (substr($this->output, -2) == "\n\n") {
- $this->output = substr($this->output, 0, -1);
- }
- $this->out(': ');
- $this->indent(' ', false);
- } else {
- # lookahead for next dt
- if (substr(ltrim($this->parser->html), 0, 4) == '<dt>') {
- $this->setLineBreaks(2);
- } else {
- $this->setLineBreaks(1);
- }
- $this->indent(' ');
- }
- }
- /**
- * handle <fnref /> tags (custom footnote references, see markdownify_extra::parseString())
- *
- * @param void
- * @return void
- */
- function handleTag_fnref() {
- $this->out('[^'.$this->parser->tagAttributes['target'].']');
- }
- /**
- * handle <fn> tags (custom footnotes, see markdownify_extra::parseString()
- * and markdownify_extra::_makeFootnotes())
- *
- * @param void
- * @return void
- */
- function handleTag_fn() {
- if ($this->parser->isStartTag) {
- $this->out('[^'.$this->parser->tagAttributes['name'].']:');
- $this->setLineBreaks(1);
- } else {
- $this->setLineBreaks(2);
- }
- $this->indent(' ');
- }
- /**
- * handle <footnotes> tag (custom footnotes, see markdownify_extra::parseString()
- * and markdownify_extra::_makeFootnotes())
- *
- * @param void
- * @return void
- */
- function handleTag_footnotes() {
- if (!$this->parser->isStartTag) {
- $this->setLineBreaks(2);
- }
- }
- /**
- * parse a HTML string, clean up footnotes prior
- *
- * @param string $HTML input
- * @return string Markdown formatted output
- */
- function parseString($html) {
- /** TODO: custom markdown-extra options, e.g. titles & classes **/
- # <sup id="fnref:..."><a href"#fn..." rel="footnote">...</a></sup>
- # => <fnref target="..." />
- $html = preg_replace('@<sup id="fnref:([^"]+)">\s*<a href="#fn:\1" rel="footnote">\s*\d+\s*</a>\s*</sup>@Us', '<fnref target="$1" />', $html);
- # <div class="footnotes">
- # <hr />
- # <ol>
- #
- # <li id="fn:...">...</li>
- # ...
- #
- # </ol>
- # </div>
- # =>
- # <footnotes>
- # <fn name="...">...</fn>
- # ...
- # </footnotes>
- $html = preg_replace_callback('#<div class="footnotes">\s*<hr />\s*<ol>\s*(.+)\s*</ol>\s*</div>#Us', array(&$this, '_makeFootnotes'), $html);
- return parent::parseString($html);
- }
- /**
- * replace HTML representation of footnotes with something more easily parsable
- *
- * @note this is a callback to be used in parseString()
- *
- * @param array $matches
- * @return string
- */
- function _makeFootnotes($matches) {
- # <li id="fn:1">
- # ...
- # <a href="#fnref:block" rev="footnote">&#8617;</a></p>
- # </li>
- # => <fn name="1">...</fn>
- # remove footnote link
- $fns = preg_replace('@\s*(&#160;\s*)?<a href="#fnref:[^"]+" rev="footnote"[^>]*>&#8617;</a>\s*@s', '', $matches[1]);
- # remove empty paragraph
- $fns = preg_replace('@<p>\s*</p>@s', '', $fns);
- # <li id="fn:1">...</li> -> <footnote nr="1">...</footnote>
- $fns = str_replace('<li id="fn:', '<fn name="', $fns);
-
- $fns = '<footnotes>'.$fns.'</footnotes>';
- return preg_replace('#</li>\s*(?=(?:<fn|</footnotes>))#s', '</fn>$1', $fns);
- }
-} \ No newline at end of file