\n";
+ }
+ if($list_open) {
+ $list_open = false;
+ $body .= "\n";
+ }
+
+ return array("body" => $body, "title" => $title);
+}
+?>
diff --git a/cms/markdown.php b/cms/markdown.php
new file mode 100644
index 0000000..38fe2d7
--- /dev/null
+++ b/cms/markdown.php
@@ -0,0 +1,23 @@
+]+>(.*)]+>|iU', $body, $headings );
+
+ return array("body" => $body, "title" => $headings[0]);
+}
+?>
diff --git a/cms/render.php b/cms/render.php
new file mode 100644
index 0000000..4485aec
--- /dev/null
+++ b/cms/render.php
@@ -0,0 +1,40 @@
+
diff --git a/cms/vendor/.DS_Store b/cms/vendor/.DS_Store
new file mode 100644
index 0000000..cd54fe5
Binary files /dev/null and b/cms/vendor/.DS_Store differ
diff --git a/cms/vendor/php-markdown-lib-9.1/.editorconfig b/cms/vendor/php-markdown-lib-9.1/.editorconfig
new file mode 100644
index 0000000..179d40c
--- /dev/null
+++ b/cms/vendor/php-markdown-lib-9.1/.editorconfig
@@ -0,0 +1,11 @@
+# EditorConfig is awesome: https://EditorConfig.org
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = false
+
+[*.php]
+indent_style = tab
+insert_final_newline = true
diff --git a/cms/vendor/php-markdown-lib-9.1/.gitignore b/cms/vendor/php-markdown-lib-9.1/.gitignore
new file mode 100644
index 0000000..5bd6475
--- /dev/null
+++ b/cms/vendor/php-markdown-lib-9.1/.gitignore
@@ -0,0 +1,3 @@
+*~
+/composer.lock
+/vendor/
diff --git a/cms/vendor/php-markdown-lib-9.1/.scrutinizer.yml b/cms/vendor/php-markdown-lib-9.1/.scrutinizer.yml
new file mode 100644
index 0000000..7542096
--- /dev/null
+++ b/cms/vendor/php-markdown-lib-9.1/.scrutinizer.yml
@@ -0,0 +1,36 @@
+build:
+ environment:
+ php:
+ version: '7.4'
+ nodes:
+ analysis:
+ project_setup:
+ override:
+ - 'true'
+ tests:
+ override:
+ -
+ command: 'vendor/bin/phpunit --coverage-clover=clover.xml'
+ coverage:
+ file: 'clover.xml'
+ format: 'clover'
+ -
+ command: phpcs-run
+ use_website_config: true
+ environment:
+ node:
+ version: 6.0.0
+ tests: true
+filter:
+ excluded_paths:
+ - 'test/*'
+checks:
+ php: true
+coding_style:
+ php:
+ indentation:
+ general:
+ use_tabs: true
+ spaces:
+ around_operators:
+ concatenation: true
diff --git a/cms/vendor/php-markdown-lib-9.1/.travis.yml b/cms/vendor/php-markdown-lib-9.1/.travis.yml
new file mode 100644
index 0000000..5a2a16a
--- /dev/null
+++ b/cms/vendor/php-markdown-lib-9.1/.travis.yml
@@ -0,0 +1,19 @@
+language: php
+
+matrix:
+ include:
+ - php: hhvm-3.18
+ dist: trusty
+ - php: 7.4
+ dist: bionic
+ - php: 8.0
+ dist: bionic
+
+install:
+ - composer install --prefer-dist
+
+script:
+ - vendor/bin/phpunit --log-junit=phpunit.log
+
+notifications:
+ email: false
diff --git a/cms/vendor/php-markdown-lib-9.1/License.md b/cms/vendor/php-markdown-lib-9.1/License.md
new file mode 100644
index 0000000..25d1e16
--- /dev/null
+++ b/cms/vendor/php-markdown-lib-9.1/License.md
@@ -0,0 +1,36 @@
+PHP Markdown Lib
+Copyright (c) 2004-2021 Michel Fortin
+
+All rights reserved.
+
+Based on Markdown
+Copyright (c) 2003-2006 John Gruber
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+* Neither the name "Markdown" nor the names of its contributors may
+ be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+This software is provided by the copyright holders and contributors "as
+is" and any express or implied warranties, including, but not limited
+to, the implied warranties of merchantability and fitness for a
+particular purpose are disclaimed. In no event shall the copyright owner
+or contributors be liable for any direct, indirect, incidental, special,
+exemplary, or consequential damages (including, but not limited to,
+procurement of substitute goods or services; loss of use, data, or
+profits; or business interruption) however caused and on any theory of
+liability, whether in contract, strict liability, or tort (including
+negligence or otherwise) arising in any way out of the use of this
+software, even if advised of the possibility of such damage.
diff --git a/cms/vendor/php-markdown-lib-9.1/Michelf/Markdown.inc.php b/cms/vendor/php-markdown-lib-9.1/Michelf/Markdown.inc.php
new file mode 100644
index 0000000..e2bd380
--- /dev/null
+++ b/cms/vendor/php-markdown-lib-9.1/Michelf/Markdown.inc.php
@@ -0,0 +1,10 @@
+
+ * @copyright 2004-2019 Michel Fortin
+ * @copyright (Original Markdown) 2004-2006 John Gruber
+ */
+
+namespace Michelf;
+
+/**
+ * Markdown Parser Class
+ */
+class Markdown implements MarkdownInterface {
+ /**
+ * Define the package version
+ * @var string
+ */
+ const MARKDOWNLIB_VERSION = "2.0";
+
+ /**
+ * Simple function interface - Initialize the parser and return the result
+ * of its transform method. This will work fine for derived classes too.
+ *
+ * @api
+ *
+ * @param string $text
+ * @return string
+ */
+ public static function defaultTransform($text) {
+ // Take parser class on which this function was called.
+ $parser_class = static::class;
+
+ // Try to take parser from the static parser list
+ static $parser_list;
+ $parser =& $parser_list[$parser_class];
+
+ // Create the parser it not already set
+ if (!$parser) {
+ $parser = new $parser_class;
+ }
+
+ // Transform text using parser.
+ return $parser->transform($text);
+ }
+
+ /**
+ * Configuration variables
+ */
+ /**
+ * Change to ">" for HTML output.
+ */
+ public string $empty_element_suffix = " />";
+
+ /**
+ * The width of indentation of the output markup
+ */
+ public int $tab_width = 4;
+
+ /**
+ * Change to `true` to disallow markup or entities.
+ */
+ public bool $no_markup = false;
+ public bool $no_entities = false;
+
+
+ /**
+ * Change to `true` to enable line breaks on \n without two trailling spaces
+ * @var boolean
+ */
+ public bool $hard_wrap = false;
+
+ /**
+ * Predefined URLs and titles for reference links and images.
+ */
+ public array $predef_urls = array();
+ public array $predef_titles = array();
+
+ /**
+ * Optional filter function for URLs
+ * @var callable|null
+ */
+ public $url_filter_func = null;
+
+ /**
+ * Optional header id="" generation callback function.
+ * @var callable|null
+ */
+ public $header_id_func = null;
+
+ /**
+ * Optional function for converting code block content to HTML
+ * @var callable|null
+ */
+ public $code_block_content_func = null;
+
+ /**
+ * Optional function for converting code span content to HTML.
+ * @var callable|null
+ */
+ public $code_span_content_func = null;
+
+ /**
+ * Class attribute to toggle "enhanced ordered list" behaviour
+ * setting this to true will allow ordered lists to start from the index
+ * number that is defined first.
+ *
+ * For example:
+ * 2. List item two
+ * 3. List item three
+ *
+ * Becomes:
+ *
+ *
List item two
+ *
List item three
+ *
+ */
+ public bool $enhanced_ordered_list = false;
+
+ /**
+ * Parser implementation
+ */
+ /**
+ * Regex to match balanced [brackets].
+ * Needed to insert a maximum bracked depth while converting to PHP.
+ */
+ protected int $nested_brackets_depth = 6;
+ protected $nested_brackets_re;
+
+ protected int $nested_url_parenthesis_depth = 4;
+ protected $nested_url_parenthesis_re;
+
+ /**
+ * Table of hash values for escaped characters:
+ */
+ protected string $escape_chars = '\`*_{}[]()>#+-.!';
+ protected string $escape_chars_re;
+
+ /**
+ * Constructor function. Initialize appropriate member variables.
+ * @return void
+ */
+ public function __construct() {
+ $this->_initDetab();
+ $this->prepareItalicsAndBold();
+
+ $this->nested_brackets_re =
+ str_repeat('(?>[^\[\]]+|\[', $this->nested_brackets_depth).
+ str_repeat('\])*', $this->nested_brackets_depth);
+
+ $this->nested_url_parenthesis_re =
+ str_repeat('(?>[^()\s]+|\(', $this->nested_url_parenthesis_depth).
+ str_repeat('(?>\)))*', $this->nested_url_parenthesis_depth);
+
+ $this->escape_chars_re = '['.preg_quote($this->escape_chars).']';
+
+ // Sort document, block, and span gamut in ascendent priority order.
+ asort($this->document_gamut);
+ asort($this->block_gamut);
+ asort($this->span_gamut);
+ }
+
+
+ /**
+ * Internal hashes used during transformation.
+ */
+ protected array $urls = array();
+ protected $titles = array();
+ protected array $html_hashes = array();
+
+ /**
+ * Status flag to avoid invalid nesting.
+ */
+ protected bool $in_anchor = false;
+
+ /**
+ * Status flag to avoid invalid nesting.
+ */
+ protected bool $in_emphasis_processing = false;
+
+ /**
+ * Called before the transformation process starts to setup parser states.
+ * @return void
+ */
+ protected function setup() {
+ // Clear global hashes.
+ $this->urls = $this->predef_urls;
+ $this->titles = $this->predef_titles;
+ $this->html_hashes = array();
+ $this->in_anchor = false;
+ $this->in_emphasis_processing = false;
+ }
+
+ /**
+ * Called after the transformation process to clear any variable which may
+ * be taking up memory unnecessarly.
+ * @return void
+ */
+ protected function teardown() {
+ $this->urls = array();
+ $this->titles = array();
+ $this->html_hashes = array();
+ }
+
+ /**
+ * Main function. Performs some preprocessing on the input text and pass
+ * it through the document gamut.
+ *
+ * @api
+ *
+ * @param string $text
+ * @return string
+ */
+ public function transform($text) {
+ $this->setup();
+
+ # Remove UTF-8 BOM and marker character in input, if present.
+ $text = preg_replace('{^\xEF\xBB\xBF|\x1A}', '', $text);
+
+ # Standardize line endings:
+ # DOS to Unix and Mac to Unix
+ $text = preg_replace('{\r\n?}', "\n", $text);
+
+ # Make sure $text ends with a couple of newlines:
+ $text .= "\n\n";
+
+ # Convert all tabs to spaces.
+ $text = $this->detab($text);
+
+ # Turn block-level HTML blocks into hash entries
+ $text = $this->hashHTMLBlocks($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 /[ ]*\n+/ .
+ $text = preg_replace('/^[ ]+$/m', '', $text);
+
+ # Run document gamut methods.
+ foreach ($this->document_gamut as $method => $priority) {
+ $text = $this->$method($text);
+ }
+
+ $this->teardown();
+
+ return $text . "\n";
+ }
+
+ /**
+ * Define the document gamut
+ */
+ protected array $document_gamut = array(
+ // Strip link definitions, store in hashes.
+ "stripLinkDefinitions" => 20,
+ "runBasicBlockGamut" => 30,
+ );
+
+ /**
+ * Strips link definitions from text, stores the URLs and titles in
+ * hash references
+ * @param string $text
+ * @return string
+ */
+ protected function stripLinkDefinitions($text) {
+
+ $less_than_tab = $this->tab_width - 1;
+
+ // Link defs are in the form: ^[id]: url "optional title"
+ $text = preg_replace_callback('{
+ ^[ ]{0,'.$less_than_tab.'}\[(.+)\][ ]?: # id = $1
+ [ ]*
+ \n? # maybe *one* newline
+ [ ]*
+ (?:
+ <(.+?)> # url = $2
+ |
+ (\S+?) # url = $3
+ )
+ [ ]*
+ \n? # maybe one newline
+ [ ]*
+ (?:
+ (?<=\s) # lookbehind for whitespace
+ ["(]
+ (.*?) # title = $4
+ [")]
+ [ ]*
+ )? # title is optional
+ (?:\n+|\Z)
+ }xm',
+ array($this, '_stripLinkDefinitions_callback'),
+ $text
+ );
+ return $text;
+ }
+
+ /**
+ * The callback to strip link definitions
+ * @param array $matches
+ * @return string
+ */
+ protected function _stripLinkDefinitions_callback($matches) {
+ $link_id = strtolower($matches[1]);
+ $url = $matches[2] == '' ? $matches[3] : $matches[2];
+ $this->urls[$link_id] = $url;
+ $this->titles[$link_id] =& $matches[4];
+ return ''; // String that will replace the block
+ }
+
+ /**
+ * Hashify HTML blocks
+ * @param string $text
+ * @return string
+ */
+ protected function hashHTMLBlocks($text) {
+ if ($this->no_markup) {
+ return $text;
+ }
+
+ $less_than_tab = $this->tab_width - 1;
+
+ /**
+ * 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
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:
+ *
+ * * List "a" is made of tags which can be both inline or block-level.
+ * These will be treated block-level when the start tag is alone on
+ * its line, otherwise they're not matched here and will be taken as
+ * inline later.
+ * * List "b" is made of tags which are always block-level;
+ */
+ $block_tags_a_re = 'ins|del';
+ $block_tags_b_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|'.
+ 'script|noscript|style|form|fieldset|iframe|math|svg|'.
+ 'article|section|nav|aside|hgroup|header|footer|'.
+ 'figure|details|summary';
+
+ // Regular expression for the content of a block tag.
+ $nested_tags_level = 4;
+ $attr = '
+ (?> # optional tag attributes
+ \s # starts with whitespace
+ (?>
+ [^>"/]+ # text outside quotes
+ |
+ /+(?!>) # slash not followed by ">"
+ |
+ "[^"]*" # text inside double quotes (tolerate ">")
+ |
+ \'[^\']*\' # text inside single quotes (tolerate ">")
+ )*
+ )?
+ ';
+ $content =
+ str_repeat('
+ (?>
+ [^<]+ # content without tag
+ |
+ <\2 # nested opening tag
+ '.$attr.' # attributes
+ (?>
+ />
+ |
+ >', $nested_tags_level). // end of opening tag
+ '.*?'. // last level nested tag content
+ str_repeat('
+ # closing nested tag
+ )
+ |
+ <(?!/\2\s*> # other tags with a different name
+ )
+ )*',
+ $nested_tags_level);
+ $content2 = str_replace('\2', '\3', $content);
+
+ /**
+ * First, look for nested blocks, e.g.:
+ *
+ *
+ * tags for inner block must be indented.
+ *
+ *
+ *
+ * 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 `
` and stop at the
+ * first `
`.
+ */
+ $text = preg_replace_callback('{(?>
+ (?>
+ (?<=\n) # Starting on its own line
+ | # or
+ \A\n? # the at beginning of the doc
+ )
+ ( # save in $1
+
+ # Match from `\n` to `\n`, handling nested tags
+ # in between.
+
+ [ ]{0,'.$less_than_tab.'}
+ <('.$block_tags_b_re.')# start tag = $2
+ '.$attr.'> # attributes followed by > and \n
+ '.$content.' # content, support nesting
+ # the matching end tag
+ [ ]* # trailing spaces/tabs
+ (?=\n+|\Z) # followed by a newline or end of document
+
+ | # Special version for tags of group a.
+
+ [ ]{0,'.$less_than_tab.'}
+ <('.$block_tags_a_re.')# start tag = $3
+ '.$attr.'>[ ]*\n # attributes followed by >
+ '.$content2.' # content, support nesting
+ # the matching end tag
+ [ ]* # trailing spaces/tabs
+ (?=\n+|\Z) # followed by a newline or end of document
+
+ | # Special case just for . It was easier to make a special
+ # case than to make the other regex more complicated.
+
+ [ ]{0,'.$less_than_tab.'}
+ <(hr) # start tag = $2
+ '.$attr.' # attributes
+ /?> # the matching end tag
+ [ ]*
+ (?=\n{2,}|\Z) # followed by a blank line or end of document
+
+ | # Special case for standalone HTML comments:
+
+ [ ]{0,'.$less_than_tab.'}
+ (?s:
+
+ )
+ [ ]*
+ (?=\n{2,}|\Z) # followed by a blank line or end of document
+
+ | # PHP and ASP-style processor instructions (
+ )
+ [ ]*
+ (?=\n{2,}|\Z) # followed by a blank line or end of document
+
+ )
+ )}Sxmi',
+ array($this, '_hashHTMLBlocks_callback'),
+ $text
+ );
+
+ return $text;
+ }
+
+ /**
+ * The callback for hashing HTML blocks
+ * @param string $matches
+ * @return string
+ */
+ protected function _hashHTMLBlocks_callback($matches) {
+ $text = $matches[1];
+ $key = $this->hashBlock($text);
+ return "\n\n$key\n\n";
+ }
+
+ /**
+ * Called whenever a tag must be hashed when a function insert an atomic
+ * element in the text stream. Passing $text to through this function gives
+ * a unique text-token which will be reverted back when calling unhash.
+ *
+ * The $boundary argument specify what character should be used to surround
+ * the token. By convension, "B" is used for block elements that needs not
+ * to be wrapped into paragraph tags at the end, ":" is used for elements
+ * that are word separators and "X" is used in the general case.
+ *
+ * @param string $text
+ * @param string $boundary
+ * @return string
+ */
+ protected function hashPart($text, $boundary = 'X') {
+ // Swap back any tag hash found in $text so we do not have to `unhash`
+ // multiple times at the end.
+ $text = $this->unhash($text);
+
+ // Then hash the block.
+ static $i = 0;
+ $key = "$boundary\x1A" . ++$i . $boundary;
+ $this->html_hashes[$key] = $text;
+ return $key; // String that will replace the tag.
+ }
+
+ /**
+ * Shortcut function for hashPart with block-level boundaries.
+ * @param string $text
+ * @return string
+ */
+ protected function hashBlock($text) {
+ return $this->hashPart($text, 'B');
+ }
+
+ /**
+ * Define the block gamut - these are all the transformations that form
+ * block-level tags like paragraphs, headers, and list items.
+ */
+ protected array $block_gamut = array(
+ "doHeaders" => 10,
+ "doHorizontalRules" => 20,
+ "doLists" => 40,
+ "doCodeBlocks" => 50,
+ "doBlockQuotes" => 60,
+ );
+
+ /**
+ * Run block gamut tranformations.
+ *
+ * We need to escape raw HTML in Markdown source before doing anything
+ * else. This need to be done for each block, and not only at the
+ * begining in the Markdown function since hashed blocks can be part of
+ * list items and could have been indented. Indented blocks would have
+ * been seen as a code block in a previous pass of hashHTMLBlocks.
+ *
+ * @param string $text
+ * @return string
+ */
+ protected function runBlockGamut($text) {
+ $text = $this->hashHTMLBlocks($text);
+ return $this->runBasicBlockGamut($text);
+ }
+
+ /**
+ * Run block gamut tranformations, without hashing HTML blocks. This is
+ * useful when HTML blocks are known to be already hashed, like in the first
+ * whole-document pass.
+ *
+ * @param string $text
+ * @return string
+ */
+ protected function runBasicBlockGamut($text) {
+
+ foreach ($this->block_gamut as $method => $priority) {
+ $text = $this->$method($text);
+ }
+
+ // Finally form paragraph and restore hashed blocks.
+ $text = $this->formParagraphs($text);
+
+ return $text;
+ }
+
+ /**
+ * Convert horizontal rules
+ * @param string $text
+ * @return string
+ */
+ protected function doHorizontalRules($text) {
+ return preg_replace(
+ '{
+ ^[ ]{0,3} # Leading space
+ ([-*_]) # $1: First marker
+ (?> # Repeated marker group
+ [ ]{0,2} # Zero, one, or two spaces.
+ \1 # Marker character
+ ){2,} # Group repeated at least twice
+ [ ]* # Tailing spaces
+ $ # End of line.
+ }mx',
+ "\n".$this->hashBlock("empty_element_suffix")."\n",
+ $text
+ );
+ }
+
+ /**
+ * These are all the transformations that occur *within* block-level
+ * tags like paragraphs, headers, and list items.
+ */
+ protected array $span_gamut = array(
+ // Process character escapes, code spans, and inline HTML
+ // in one shot.
+ "parseSpan" => -30,
+ // Process anchor and image tags. Images must come first,
+ // because ![foo][f] looks like an anchor.
+ "doImages" => 10,
+ "doAnchors" => 20,
+ // Make links out of things like ``
+ // Must come after doAnchors, because you can use < and >
+ // delimiters in inline links like [this]().
+ "doAutoLinks" => 30,
+ "encodeAmpsAndAngles" => 40,
+ "doItalicsAndBold" => 50,
+ "doHardBreaks" => 60,
+ );
+
+ /**
+ * Run span gamut transformations
+ * @param string $text
+ * @return string
+ */
+ protected function runSpanGamut($text) {
+ foreach ($this->span_gamut as $method => $priority) {
+ $text = $this->$method($text);
+ }
+
+ return $text;
+ }
+
+ /**
+ * Do hard breaks
+ * @param string $text
+ * @return string
+ */
+ protected function doHardBreaks($text) {
+ if ($this->hard_wrap) {
+ return preg_replace_callback('/ *\n/',
+ array($this, '_doHardBreaks_callback'), $text);
+ } else {
+ return preg_replace_callback('/ {2,}\n/',
+ array($this, '_doHardBreaks_callback'), $text);
+ }
+ }
+
+ /**
+ * Trigger part hashing for the hard break (callback method)
+ * @param array $matches
+ * @return string
+ */
+ protected function _doHardBreaks_callback($matches) {
+ return $this->hashPart("empty_element_suffix\n");
+ }
+
+ /**
+ * Turn Markdown link shortcuts into XHTML tags.
+ * @param string $text
+ * @return string
+ */
+ protected function doAnchors($text) {
+ if ($this->in_anchor) {
+ return $text;
+ }
+ $this->in_anchor = true;
+
+ // First, handle reference-style links: [link text] [id]
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ ('.$this->nested_brackets_re.') # link text = $2
+ \]
+
+ [ ]? # one optional space
+ (?:\n[ ]*)? # one optional newline followed by spaces
+
+ \[
+ (.*?) # id = $3
+ \]
+ )
+ }xs',
+ array($this, '_doAnchors_reference_callback'), $text);
+
+ // Next, inline-style links: [link text](url "optional title")
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ ('.$this->nested_brackets_re.') # link text = $2
+ \]
+ \( # literal paren
+ [ \n]*
+ (?:
+ <(.+?)> # href = $3
+ |
+ ('.$this->nested_url_parenthesis_re.') # href = $4
+ )
+ [ \n]*
+ ( # $5
+ ([\'"]) # quote char = $6
+ (.*?) # Title = $7
+ \6 # matching quote
+ [ \n]* # ignore any spaces/tabs between closing quote and )
+ )? # title is optional
+ \)
+ )
+ }xs',
+ array($this, '_doAnchors_inline_callback'), $text);
+
+ // Last, handle reference-style shortcuts: [link text]
+ // These must come last in case you've also got [link text][1]
+ // or [link text](/foo)
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ ([^\[\]]+) # link text = $2; can\'t contain [ or ]
+ \]
+ )
+ }xs',
+ array($this, '_doAnchors_reference_callback'), $text);
+
+ $this->in_anchor = false;
+ return $text;
+ }
+
+ /**
+ * Callback method to parse referenced anchors
+ * @param string $matches
+ * @return string
+ */
+ protected function _doAnchors_reference_callback($matches) {
+ $whole_match = $matches[1];
+ $link_text = $matches[2];
+ $link_id =& $matches[3];
+
+ if ($link_id == "") {
+ // for shortcut links like [this][] or [this].
+ $link_id = $link_text;
+ }
+
+ // lower-case and turn embedded newlines into spaces
+ $link_id = strtolower($link_id);
+ $link_id = preg_replace('{[ ]?\n}', ' ', $link_id);
+
+ if (isset($this->urls[$link_id])) {
+ $url = $this->urls[$link_id];
+ $url = $this->encodeURLAttribute($url);
+
+ $result = "titles[$link_id] ) ) {
+ $title = $this->titles[$link_id];
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+
+ $link_text = $this->runSpanGamut($link_text);
+ $result .= ">$link_text";
+ $result = $this->hashPart($result);
+ } else {
+ $result = $whole_match;
+ }
+ return $result;
+ }
+
+ /**
+ * Callback method to parse inline anchors
+ * @param string $matches
+ * @return string
+ */
+ protected function _doAnchors_inline_callback($matches) {
+ $link_text = $this->runSpanGamut($matches[2]);
+ $url = $matches[3] === '' ? $matches[4] : $matches[3];
+ $title =& $matches[7];
+
+ // If the URL was of the form it got caught by the HTML
+ // tag parser and hashed. Need to reverse the process before using
+ // the URL.
+ $unhashed = $this->unhash($url);
+ if ($unhashed !== $url)
+ $url = preg_replace('/^<(.*)>$/', '\1', $unhashed);
+
+ $url = $this->encodeURLAttribute($url);
+
+ $result = "encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+
+ $link_text = $this->runSpanGamut($link_text);
+ $result .= ">$link_text";
+
+ return $this->hashPart($result);
+ }
+
+ /**
+ * Turn Markdown image shortcuts into tags.
+ * @param string $text
+ * @return string
+ */
+ protected function doImages($text) {
+ // First, handle reference-style labeled images: ![alt text][id]
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ !\[
+ ('.$this->nested_brackets_re.') # alt text = $2
+ \]
+
+ [ ]? # one optional space
+ (?:\n[ ]*)? # one optional newline followed by spaces
+
+ \[
+ (.*?) # id = $3
+ \]
+
+ )
+ }xs',
+ array($this, '_doImages_reference_callback'), $text);
+
+ // Next, handle inline images: 
+ // Don't forget: encode * and _
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ !\[
+ ('.$this->nested_brackets_re.') # alt text = $2
+ \]
+ \s? # One optional whitespace character
+ \( # literal paren
+ [ \n]*
+ (?:
+ <(\S*)> # src url = $3
+ |
+ ('.$this->nested_url_parenthesis_re.') # src url = $4
+ )
+ [ \n]*
+ ( # $5
+ ([\'"]) # quote char = $6
+ (.*?) # title = $7
+ \6 # matching quote
+ [ \n]*
+ )? # title is optional
+ \)
+ )
+ }xs',
+ array($this, '_doImages_inline_callback'), $text);
+
+ return $text;
+ }
+
+ /**
+ * Callback to parse references image tags
+ * @param array $matches
+ * @return string
+ */
+ protected function _doImages_reference_callback($matches) {
+ $whole_match = $matches[1];
+ $alt_text = $matches[2];
+ $link_id = strtolower($matches[3]);
+
+ if ($link_id == "") {
+ $link_id = strtolower($alt_text); // for shortcut links like ![this][].
+ }
+
+ $alt_text = $this->encodeAttribute($alt_text);
+ if (isset($this->urls[$link_id])) {
+ $url = $this->encodeURLAttribute($this->urls[$link_id]);
+ $result = "titles[$link_id])) {
+ $title = $this->titles[$link_id];
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+ $result .= $this->empty_element_suffix;
+ $result = $this->hashPart($result);
+ } else {
+ // If there's no such link ID, leave intact:
+ $result = $whole_match;
+ }
+
+ return $result;
+ }
+
+ /**
+ * Callback to parse inline image tags
+ * @param array $matches
+ * @return string
+ */
+ protected function _doImages_inline_callback($matches) {
+ $whole_match = $matches[1];
+ $alt_text = $matches[2];
+ $url = $matches[3] == '' ? $matches[4] : $matches[3];
+ $title =& $matches[7];
+
+ $alt_text = $this->encodeAttribute($alt_text);
+ $url = $this->encodeURLAttribute($url);
+ $result = "encodeAttribute($title);
+ $result .= " title=\"$title\""; // $title already quoted
+ }
+ $result .= $this->empty_element_suffix;
+
+ return $this->hashPart($result);
+ }
+
+ /**
+ * Parse Markdown heading elements to HTML
+ * @param string $text
+ * @return string
+ */
+ protected function doHeaders($text) {
+ /**
+ * Setext-style headers:
+ * Header 1
+ * ========
+ *
+ * Header 2
+ * --------
+ */
+ $text = preg_replace_callback('{ ^(.+?)[ ]*\n(=+|-+)[ ]*\n+ }mx',
+ array($this, '_doHeaders_callback_setext'), $text);
+
+ /**
+ * atx-style headers:
+ * # Header 1
+ * ## Header 2
+ * ## Header 2 with closing hashes ##
+ * ...
+ * ###### Header 6
+ */
+ $text = preg_replace_callback('{
+ ^(\#{1,6}) # $1 = string of #\'s
+ [ ]*
+ (.+?) # $2 = Header text
+ [ ]*
+ \#* # optional closing #\'s (not counted)
+ \n+
+ }xm',
+ array($this, '_doHeaders_callback_atx'), $text);
+
+ return $text;
+ }
+
+ /**
+ * Setext header parsing callback
+ * @param array $matches
+ * @return string
+ */
+ protected function _doHeaders_callback_setext($matches) {
+ // Terrible hack to check we haven't found an empty list item.
+ if ($matches[2] == '-' && preg_match('{^-(?: |$)}', $matches[1])) {
+ return $matches[0];
+ }
+
+ $level = $matches[2][0] == '=' ? 1 : 2;
+
+ // ID attribute generation
+ $idAtt = $this->_generateIdFromHeaderValue($matches[1]);
+
+ $block = "".$this->runSpanGamut($matches[1])."";
+ return "\n" . $this->hashBlock($block) . "\n\n";
+ }
+
+ /**
+ * ATX header parsing callback
+ * @param array $matches
+ * @return string
+ */
+ protected function _doHeaders_callback_atx($matches) {
+ // ID attribute generation
+ $idAtt = $this->_generateIdFromHeaderValue($matches[2]);
+
+ $level = strlen($matches[1]);
+ $block = "".$this->runSpanGamut($matches[2])."";
+ return "\n" . $this->hashBlock($block) . "\n\n";
+ }
+
+ /**
+ * If a header_id_func property is set, we can use it to automatically
+ * generate an id attribute.
+ *
+ * This method returns a string in the form id="foo", or an empty string
+ * otherwise.
+ * @param string $headerValue
+ * @return string
+ */
+ protected function _generateIdFromHeaderValue($headerValue) {
+ if (!is_callable($this->header_id_func)) {
+ return "";
+ }
+
+ $idValue = call_user_func($this->header_id_func, $headerValue);
+ if (!$idValue) {
+ return "";
+ }
+
+ return ' id="' . $this->encodeAttribute($idValue) . '"';
+ }
+
+ /**
+ * Form HTML ordered (numbered) and unordered (bulleted) lists.
+ * @param string $text
+ * @return string
+ */
+ protected function doLists($text) {
+ $less_than_tab = $this->tab_width - 1;
+
+ // Re-usable patterns to match list item bullets and number markers:
+ $marker_ul_re = '[*+-]';
+ $marker_ol_re = '\d+[\.]';
+
+ $markers_relist = array(
+ $marker_ul_re => $marker_ol_re,
+ $marker_ol_re => $marker_ul_re,
+ );
+
+ foreach ($markers_relist as $marker_re => $other_marker_re) {
+ // Re-usable pattern to match any entirel ul or ol list:
+ $whole_list_re = '
+ ( # $1 = whole list
+ ( # $2
+ ([ ]{0,'.$less_than_tab.'}) # $3 = number of spaces
+ ('.$marker_re.') # $4 = first list item marker
+ [ ]+
+ )
+ (?s:.+?)
+ ( # $5
+ \z
+ |
+ \n{2,}
+ (?=\S)
+ (?! # Negative lookahead for another list item marker
+ [ ]*
+ '.$marker_re.'[ ]+
+ )
+ |
+ (?= # Lookahead for another kind of list
+ \n
+ \3 # Must have the same indentation
+ '.$other_marker_re.'[ ]+
+ )
+ )
+ )
+ '; // mx
+
+ // We use a different prefix before nested lists than top-level lists.
+ //See extended comment in _ProcessListItems().
+
+ if ($this->list_level) {
+ $text = preg_replace_callback('{
+ ^
+ '.$whole_list_re.'
+ }mx',
+ array($this, '_doLists_callback'), $text);
+ } else {
+ $text = preg_replace_callback('{
+ (?:(?<=\n)\n|\A\n?) # Must eat the newline
+ '.$whole_list_re.'
+ }mx',
+ array($this, '_doLists_callback'), $text);
+ }
+ }
+
+ return $text;
+ }
+
+ /**
+ * List parsing callback
+ * @param array $matches
+ * @return string
+ */
+ protected function _doLists_callback($matches) {
+ // Re-usable patterns to match list item bullets and number markers:
+ $marker_ul_re = '[*+-]';
+ $marker_ol_re = '\d+[\.]';
+ $marker_any_re = "(?:$marker_ul_re|$marker_ol_re)";
+ $marker_ol_start_re = '[0-9]+';
+
+ $list = $matches[1];
+ $list_type = preg_match("/$marker_ul_re/", $matches[4]) ? "ul" : "ol";
+
+ $marker_any_re = ( $list_type == "ul" ? $marker_ul_re : $marker_ol_re );
+
+ $list .= "\n";
+ $result = $this->processListItems($list, $marker_any_re);
+
+ $ol_start = 1;
+ if ($this->enhanced_ordered_list) {
+ // Get the start number for ordered list.
+ if ($list_type == 'ol') {
+ $ol_start_array = array();
+ $ol_start_check = preg_match("/$marker_ol_start_re/", $matches[4], $ol_start_array);
+ if ($ol_start_check){
+ $ol_start = $ol_start_array[0];
+ }
+ }
+ }
+
+ if ($ol_start > 1 && $list_type == 'ol'){
+ $result = $this->hashBlock("<$list_type start=\"$ol_start\">\n" . $result . "");
+ } else {
+ $result = $this->hashBlock("<$list_type>\n" . $result . "");
+ }
+ return "\n". $result ."\n\n";
+ }
+
+ /**
+ * Nesting tracker for list levels
+ */
+ protected int $list_level = 0;
+
+ /**
+ * Process the contents of a single ordered or unordered list, splitting it
+ * into individual list items.
+ * @param string $list_str
+ * @param string $marker_any_re
+ * @return string
+ */
+ protected function processListItems($list_str, $marker_any_re) {
+ /**
+ * The $this->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.".
+ */
+ $this->list_level++;
+
+ // Trim trailing blank lines:
+ $list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
+
+ $list_str = preg_replace_callback('{
+ (\n)? # leading line = $1
+ (^[ ]*) # leading whitespace = $2
+ ('.$marker_any_re.' # list marker and space = $3
+ (?:[ ]+|(?=\n)) # space only required if item is not empty
+ )
+ ((?s:.*?)) # list item text = $4
+ (?:(\n+(?=\n))|\n) # tailing blank line = $5
+ (?= \n* (\z | \2 ('.$marker_any_re.') (?:[ ]+|(?=\n))))
+ }xm',
+ array($this, '_processListItems_callback'), $list_str);
+
+ $this->list_level--;
+ return $list_str;
+ }
+
+ /**
+ * List item parsing callback
+ * @param array $matches
+ * @return string
+ */
+ protected function _processListItems_callback($matches) {
+ $item = $matches[4];
+ $leading_line =& $matches[1];
+ $leading_space =& $matches[2];
+ $marker_space = $matches[3];
+ $tailing_blank_line =& $matches[5];
+
+ if ($leading_line || $tailing_blank_line ||
+ preg_match('/\n{2,}/', $item))
+ {
+ // Replace marker with the appropriate whitespace indentation
+ $item = $leading_space . str_repeat(' ', strlen($marker_space)) . $item;
+ $item = $this->runBlockGamut($this->outdent($item)."\n");
+ } else {
+ // Recursion for sub-lists:
+ $item = $this->doLists($this->outdent($item));
+ $item = $this->formParagraphs($item, false);
+ }
+
+ return "
" . $item . "
\n";
+ }
+
+ /**
+ * Process Markdown `
` blocks.
+ * @param string $text
+ * @return string
+ */
+ protected function doCodeBlocks($text) {
+ $text = preg_replace_callback('{
+ (?:\n\n|\A\n?)
+ ( # $1 = the code block -- one or more lines, starting with a space/tab
+ (?>
+ [ ]{'.$this->tab_width.'} # Lines must start with a tab or a tab-width of spaces
+ .*\n+
+ )+
+ )
+ ((?=^[ ]{0,'.$this->tab_width.'}\S)|\Z) # Lookahead for non-space at line-start, or end of doc
+ }xm',
+ array($this, '_doCodeBlocks_callback'), $text);
+
+ return $text;
+ }
+
+ /**
+ * Code block parsing callback
+ * @param array $matches
+ * @return string
+ */
+ protected function _doCodeBlocks_callback($matches) {
+ $codeblock = $matches[1];
+
+ $codeblock = $this->outdent($codeblock);
+ if (is_callable($this->code_block_content_func)) {
+ $codeblock = call_user_func($this->code_block_content_func, $codeblock, "");
+ } else {
+ $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
+ }
+
+ # trim leading newlines and trailing newlines
+ $codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock);
+
+ $codeblock = "
$codeblock\n
";
+ return "\n\n" . $this->hashBlock($codeblock) . "\n\n";
+ }
+
+ /**
+ * Create a code span markup for $code. Called from handleSpanToken.
+ * @param string $code
+ * @return string
+ */
+ protected function makeCodeSpan($code) {
+ if (is_callable($this->code_span_content_func)) {
+ $code = call_user_func($this->code_span_content_func, $code);
+ } else {
+ $code = htmlspecialchars(trim($code), ENT_NOQUOTES);
+ }
+ return $this->hashPart("$code");
+ }
+
+ /**
+ * Define the emphasis operators with their regex matches
+ * @var array
+ */
+ protected array $em_relist = array(
+ '' => '(?:(? '(? '(? '(?:(? '(? '(? '(?:(? '(? '(?em_relist as $em => $em_re) {
+ foreach ($this->strong_relist as $strong => $strong_re) {
+ // Construct list of allowed token expressions.
+ $token_relist = array();
+ if (isset($this->em_strong_relist["$em$strong"])) {
+ $token_relist[] = $this->em_strong_relist["$em$strong"];
+ }
+ $token_relist[] = $em_re;
+ $token_relist[] = $strong_re;
+
+ // Construct master expression from list.
+ $token_re = '{(' . implode('|', $token_relist) . ')}';
+ $this->em_strong_prepared_relist["$em$strong"] = $token_re;
+ }
+ }
+ }
+
+ /**
+ * Convert Markdown italics (emphasis) and bold (strong) to HTML
+ * @param string $text
+ * @return string
+ */
+ protected function doItalicsAndBold($text) {
+ if ($this->in_emphasis_processing) {
+ return $text; // avoid reentrency
+ }
+ $this->in_emphasis_processing = true;
+
+ $token_stack = array('');
+ $text_stack = array('');
+ $em = '';
+ $strong = '';
+ $tree_char_em = false;
+
+ while (1) {
+ // Get prepared regular expression for seraching emphasis tokens
+ // in current context.
+ $token_re = $this->em_strong_prepared_relist["$em$strong"];
+
+ // Each loop iteration search for the next emphasis token.
+ // Each token is then passed to handleSpanToken.
+ $parts = preg_split($token_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
+ $text_stack[0] .= $parts[0];
+ $token =& $parts[1];
+ $text =& $parts[2];
+
+ if (empty($token)) {
+ // Reached end of text span: empty stack without emitting.
+ // any more emphasis.
+ while ($token_stack[0]) {
+ $text_stack[1] .= array_shift($token_stack);
+ $text_stack[0] .= array_shift($text_stack);
+ }
+ break;
+ }
+
+ $token_len = strlen($token);
+ if ($tree_char_em) {
+ // Reached closing marker while inside a three-char emphasis.
+ if ($token_len == 3) {
+ // Three-char closing marker, close em and strong.
+ array_shift($token_stack);
+ $span = array_shift($text_stack);
+ $span = $this->runSpanGamut($span);
+ $span = "$span";
+ $text_stack[0] .= $this->hashPart($span);
+ $em = '';
+ $strong = '';
+ } else {
+ // Other closing marker: close one em or strong and
+ // change current token state to match the other
+ $token_stack[0] = str_repeat($token[0], 3-$token_len);
+ $tag = $token_len == 2 ? "strong" : "em";
+ $span = $text_stack[0];
+ $span = $this->runSpanGamut($span);
+ $span = "<$tag>$span";
+ $text_stack[0] = $this->hashPart($span);
+ $$tag = ''; // $$tag stands for $em or $strong
+ }
+ $tree_char_em = false;
+ } else if ($token_len == 3) {
+ if ($em) {
+ // Reached closing marker for both em and strong.
+ // Closing strong marker:
+ for ($i = 0; $i < 2; ++$i) {
+ $shifted_token = array_shift($token_stack);
+ $tag = strlen($shifted_token) == 2 ? "strong" : "em";
+ $span = array_shift($text_stack);
+ $span = $this->runSpanGamut($span);
+ $span = "<$tag>$span";
+ $text_stack[0] .= $this->hashPart($span);
+ $$tag = ''; // $$tag stands for $em or $strong
+ }
+ } else {
+ // Reached opening three-char emphasis marker. Push on token
+ // stack; will be handled by the special condition above.
+ $em = $token[0];
+ $strong = "$em$em";
+ array_unshift($token_stack, $token);
+ array_unshift($text_stack, '');
+ $tree_char_em = true;
+ }
+ } else if ($token_len == 2) {
+ if ($strong) {
+ // Unwind any dangling emphasis marker:
+ if (strlen($token_stack[0]) == 1) {
+ $text_stack[1] .= array_shift($token_stack);
+ $text_stack[0] .= array_shift($text_stack);
+ $em = '';
+ }
+ // Closing strong marker:
+ array_shift($token_stack);
+ $span = array_shift($text_stack);
+ $span = $this->runSpanGamut($span);
+ $span = "$span";
+ $text_stack[0] .= $this->hashPart($span);
+ $strong = '';
+ } else {
+ array_unshift($token_stack, $token);
+ array_unshift($text_stack, '');
+ $strong = $token;
+ }
+ } else {
+ // Here $token_len == 1
+ if ($em) {
+ if (strlen($token_stack[0]) == 1) {
+ // Closing emphasis marker:
+ array_shift($token_stack);
+ $span = array_shift($text_stack);
+ $span = $this->runSpanGamut($span);
+ $span = "$span";
+ $text_stack[0] .= $this->hashPart($span);
+ $em = '';
+ } else {
+ $text_stack[0] .= $token;
+ }
+ } else {
+ array_unshift($token_stack, $token);
+ array_unshift($text_stack, '');
+ $em = $token;
+ }
+ }
+ }
+ $this->in_emphasis_processing = false;
+ return $text_stack[0];
+ }
+
+ /**
+ * Parse Markdown blockquotes to HTML
+ * @param string $text
+ * @return string
+ */
+ protected function doBlockQuotes($text) {
+ $text = preg_replace_callback('/
+ ( # Wrap whole match in $1
+ (?>
+ ^[ ]*>[ ]? # ">" at the start of a line
+ .+\n # rest of the first line
+ (.+\n)* # subsequent consecutive lines
+ \n* # blanks
+ )+
+ )
+ /xm',
+ array($this, '_doBlockQuotes_callback'), $text);
+
+ return $text;
+ }
+
+ /**
+ * Blockquote parsing callback
+ * @param array $matches
+ * @return string
+ */
+ protected function _doBlockQuotes_callback($matches) {
+ $bq = $matches[1];
+ // trim one level of quoting - trim whitespace-only lines
+ $bq = preg_replace('/^[ ]*>[ ]?|^[ ]+$/m', '', $bq);
+ $bq = $this->runBlockGamut($bq); // recurse
+
+ $bq = preg_replace('/^/m', " ", $bq);
+ // These leading spaces cause problem with
content,
+ // so we need to fix that:
+ $bq = preg_replace_callback('{(\s*
) # $4 = closing tag
+// \z
+// }xs', $block, $matches))
+// {
+// list(, $div_open, , $div_content, $div_close) = $matches;
+//
+// // We can't call Markdown(), because that resets the hash;
+// // that initialization code should be pulled into its own sub, though.
+// $div_content = $this->hashHTMLBlocks($div_content);
+//
+// // Run document gamut methods on the content.
+// foreach ($this->document_gamut as $method => $priority) {
+// $div_content = $this->$method($div_content);
+// }
+//
+// $div_open = preg_replace(
+// '{\smarkdown\s*=\s*([\'"]).+?\1}', '', $div_open);
+//
+// $graf = $div_open . "\n" . $div_content . "\n" . $div_close;
+// }
+ $grafs[$key] = $graf;
+ }
+ }
+
+ return implode("\n\n", $grafs);
+ }
+
+ /**
+ * Encode text for a double-quoted HTML attribute. This function
+ * is *not* suitable for attributes enclosed in single quotes.
+ * @param string $text
+ * @return string
+ */
+ protected function encodeAttribute($text) {
+ $text = $this->encodeAmpsAndAngles($text);
+ $text = str_replace('"', '"', $text);
+ return $text;
+ }
+
+ /**
+ * Encode text for a double-quoted HTML attribute containing a URL,
+ * applying the URL filter if set. Also generates the textual
+ * representation for the URL (removing mailto: or tel:) storing it in $text.
+ * This function is *not* suitable for attributes enclosed in single quotes.
+ *
+ * @param string $url
+ * @param string $text Passed by reference
+ * @return string URL
+ */
+ protected function encodeURLAttribute($url, &$text = null) {
+ if (is_callable($this->url_filter_func)) {
+ $url = call_user_func($this->url_filter_func, $url);
+ }
+
+ if (preg_match('{^mailto:}i', $url)) {
+ $url = $this->encodeEntityObfuscatedAttribute($url, $text, 7);
+ } else if (preg_match('{^tel:}i', $url)) {
+ $url = $this->encodeAttribute($url);
+ $text = substr($url, 4);
+ } else {
+ $url = $this->encodeAttribute($url);
+ $text = $url;
+ }
+
+ return $url;
+ }
+
+ /**
+ * Smart processing for ampersands and angle brackets that need to
+ * be encoded. Valid character entities are left alone unless the
+ * no-entities mode is set.
+ * @param string $text
+ * @return string
+ */
+ protected function encodeAmpsAndAngles($text) {
+ if ($this->no_entities) {
+ $text = str_replace('&', '&', $text);
+ } else {
+ // Ampersand-encoding based entirely on Nat Irons's Amputator
+ // MT plugin:
+ $text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/',
+ '&', $text);
+ }
+ // Encode remaining <'s
+ $text = str_replace('<', '<', $text);
+
+ return $text;
+ }
+
+ /**
+ * Parse Markdown automatic links to anchor HTML tags
+ * @param string $text
+ * @return string
+ */
+ protected function doAutoLinks($text) {
+ $text = preg_replace_callback('{<((https?|ftp|dict|tel):[^\'">\s]+)>}i',
+ array($this, '_doAutoLinks_url_callback'), $text);
+
+ // Email addresses:
+ $text = preg_replace_callback('{
+ <
+ (?:mailto:)?
+ (
+ (?:
+ [-!#$%&\'*+/=?^_`.{|}~\w\x80-\xFF]+
+ |
+ ".*?"
+ )
+ \@
+ (?:
+ [-a-z0-9\x80-\xFF]+(\.[-a-z0-9\x80-\xFF]+)*\.[a-z]+
+ |
+ \[[\d.a-fA-F:]+\] # IPv4 & IPv6
+ )
+ )
+ >
+ }xi',
+ array($this, '_doAutoLinks_email_callback'), $text);
+
+ return $text;
+ }
+
+ /**
+ * Parse URL callback
+ * @param array $matches
+ * @return string
+ */
+ protected function _doAutoLinks_url_callback($matches) {
+ $url = $this->encodeURLAttribute($matches[1], $text);
+ $link = "$text";
+ return $this->hashPart($link);
+ }
+
+ /**
+ * Parse email address callback
+ * @param array $matches
+ * @return string
+ */
+ protected function _doAutoLinks_email_callback($matches) {
+ $addr = $matches[1];
+ $url = $this->encodeURLAttribute("mailto:$addr", $text);
+ $link = "$text";
+ return $this->hashPart($link);
+ }
+
+ /**
+ * Input: some text to obfuscate, e.g. "mailto:foo@example.com"
+ *
+ * Output: the same text but with most characters encoded as either a
+ * decimal or hex entity, in the hopes of foiling most address
+ * harvesting spam bots. E.g.:
+ *
+ * mailto:foo
+ * @example.co
+ * m
+ *
+ * Note: the additional output $tail is assigned the same value as the
+ * ouput, minus the number of characters specified by $head_length.
+ *
+ * Based by a filter by Matthew Wickline, posted to BBEdit-Talk.
+ * With some optimizations by Milian Wolff. Forced encoding of HTML
+ * attribute special characters by Allan Odgaard.
+ *
+ * @param string $text
+ * @param string $tail Passed by reference
+ * @param integer $head_length
+ * @return string
+ */
+ protected function encodeEntityObfuscatedAttribute($text, &$tail = null, $head_length = 0) {
+ if ($text == "") {
+ return $tail = "";
+ }
+
+ $chars = preg_split('/(? $char) {
+ $ord = ord($char);
+ // Ignore non-ascii chars.
+ if ($ord < 128) {
+ $r = ($seed * (1 + $key)) % 100; // Pseudo-random function.
+ // roughly 10% raw, 45% hex, 45% dec
+ // '@' *must* be encoded. I insist.
+ // '"' and '>' have to be encoded inside the attribute
+ if ($r > 90 && strpos('@"&>', $char) === false) {
+ /* do nothing */
+ } else if ($r < 45) {
+ $chars[$key] = '&#x'.dechex($ord).';';
+ } else {
+ $chars[$key] = '&#'.$ord.';';
+ }
+ }
+ }
+
+ $text = implode('', $chars);
+ $tail = $head_length ? implode('', array_slice($chars, $head_length)) : $text;
+
+ return $text;
+ }
+
+ /**
+ * Take the string $str and parse it into tokens, hashing embeded HTML,
+ * escaped characters and handling code spans.
+ * @param string $str
+ * @return string
+ */
+ protected function parseSpan($str) {
+ $output = '';
+
+ $span_re = '{
+ (
+ \\\\'.$this->escape_chars_re.'
+ |
+ (?no_markup ? '' : '
+ |
+ # comment
+ |
+ <\?.*?\?> | <%.*?%> # processing instruction
+ |
+ <[!$]?[-a-zA-Z0-9:_]+ # regular tags
+ (?>
+ \s
+ (?>[^"\'>]+|"[^"]*"|\'[^\']*\')*
+ )?
+ >
+ |
+ <[-a-zA-Z0-9:_]+\s*/> # xml-style empty tag
+ |
+ # closing tag
+ ').'
+ )
+ }xs';
+
+ while (1) {
+ // Each loop iteration seach for either the next tag, the next
+ // openning code span marker, or the next escaped character.
+ // Each token is then passed to handleSpanToken.
+ $parts = preg_split($span_re, $str, 2, PREG_SPLIT_DELIM_CAPTURE);
+
+ // Create token from text preceding tag.
+ if ($parts[0] != "") {
+ $output .= $parts[0];
+ }
+
+ // Check if we reach the end.
+ if (isset($parts[1])) {
+ $output .= $this->handleSpanToken($parts[1], $parts[2]);
+ $str = $parts[2];
+ } else {
+ break;
+ }
+ }
+
+ return $output;
+ }
+
+ /**
+ * Handle $token provided by parseSpan by determining its nature and
+ * returning the corresponding value that should replace it.
+ * @param string $token
+ * @param string $str Passed by reference
+ * @return string
+ */
+ protected function handleSpanToken($token, &$str) {
+ switch ($token[0]) {
+ case "\\":
+ return $this->hashPart("&#". ord($token[1]). ";");
+ case "`":
+ // Search for end marker in remaining text.
+ if (preg_match('/^(.*?[^`])'.preg_quote($token).'(?!`)(.*)$/sm',
+ $str, $matches))
+ {
+ $str = $matches[2];
+ $codespan = $this->makeCodeSpan($matches[1]);
+ return $this->hashPart($codespan);
+ }
+ return $token; // Return as text since no ending marker found.
+ default:
+ return $this->hashPart($token);
+ }
+ }
+
+ /**
+ * Remove one level of line-leading tabs or spaces
+ * @param string $text
+ * @return string
+ */
+ protected function outdent($text) {
+ return preg_replace('/^(\t|[ ]{1,' . $this->tab_width . '})/m', '', $text);
+ }
+
+
+ /**
+ * String length function for detab. `_initDetab` will create a function to
+ * handle UTF-8 if the default function does not exist.
+ * @var string
+ */
+ protected $utf8_strlen = 'mb_strlen';
+
+ /**
+ * Replace tabs with the appropriate amount of spaces.
+ *
+ * For each line we separate the line in blocks delemited by tab characters.
+ * Then we reconstruct every line by adding the appropriate number of space
+ * between each blocks.
+ *
+ * @param string $text
+ * @return string
+ */
+ protected function detab($text) {
+ $text = preg_replace_callback('/^.*\t.*$/m',
+ array($this, '_detab_callback'), $text);
+
+ return $text;
+ }
+
+ /**
+ * Replace tabs callback
+ * @param string $matches
+ * @return string
+ */
+ protected function _detab_callback($matches) {
+ $line = $matches[0];
+ $strlen = $this->utf8_strlen; // strlen function for UTF-8.
+
+ // Split in blocks.
+ $blocks = explode("\t", $line);
+ // Add each blocks to the line.
+ $line = $blocks[0];
+ unset($blocks[0]); // Do not add first block twice.
+ foreach ($blocks as $block) {
+ // Calculate amount of space, insert spaces, insert block.
+ $amount = $this->tab_width -
+ $strlen($line, 'UTF-8') % $this->tab_width;
+ $line .= str_repeat(" ", $amount) . $block;
+ }
+ return $line;
+ }
+
+ /**
+ * Check for the availability of the function in the `utf8_strlen` property
+ * (initially `mb_strlen`). If the function is not available, create a
+ * function that will loosely count the number of UTF-8 characters with a
+ * regular expression.
+ * @return void
+ */
+ protected function _initDetab() {
+
+ if (function_exists($this->utf8_strlen)) {
+ return;
+ }
+
+ $this->utf8_strlen = fn($text) => preg_match_all('/[\x00-\xBF]|[\xC0-\xFF][\x80-\xBF]*/', $text, $m);
+ }
+
+ /**
+ * Swap back in all the tags hashed by _HashHTMLBlocks.
+ * @param string $text
+ * @return string
+ */
+ protected function unhash($text) {
+ return preg_replace_callback('/(.)\x1A[0-9]+\1/',
+ array($this, '_unhash_callback'), $text);
+ }
+
+ /**
+ * Unhashing callback
+ * @param array $matches
+ * @return string
+ */
+ protected function _unhash_callback($matches) {
+ return $this->html_hashes[$matches[0]];
+ }
+}
diff --git a/cms/vendor/php-markdown-lib-9.1/Michelf/MarkdownExtra.inc.php b/cms/vendor/php-markdown-lib-9.1/Michelf/MarkdownExtra.inc.php
new file mode 100644
index 0000000..d09bd7a
--- /dev/null
+++ b/cms/vendor/php-markdown-lib-9.1/Michelf/MarkdownExtra.inc.php
@@ -0,0 +1,11 @@
+
+ * @copyright 2004-2019 Michel Fortin
+ * @copyright (Original Markdown) 2004-2006 John Gruber
+ */
+
+namespace Michelf;
+
+/**
+ * Markdown Extra Parser Class
+ */
+class MarkdownExtra extends \Michelf\Markdown {
+ /**
+ * Configuration variables
+ */
+ /**
+ * Prefix for footnote ids.
+ */
+ public string $fn_id_prefix = "";
+
+ /**
+ * Optional title attribute for footnote links.
+ */
+ public string $fn_link_title = "";
+
+ /**
+ * Optional class attribute for footnote links and backlinks.
+ */
+ public string $fn_link_class = "footnote-ref";
+ public string $fn_backlink_class = "footnote-backref";
+
+ /**
+ * Content to be displayed within footnote backlinks. The default is '↩';
+ * the U+FE0E on the end is a Unicode variant selector used to prevent iOS
+ * from displaying the arrow character as an emoji.
+ * Optionally use '^^' and '%%' to refer to the footnote number and
+ * reference number respectively. {@see parseFootnotePlaceholders()}
+ */
+ public string $fn_backlink_html = '↩︎';
+
+ /**
+ * Optional title and aria-label attributes for footnote backlinks for
+ * added accessibility (to ensure backlink uniqueness).
+ * Use '^^' and '%%' to refer to the footnote number and reference number
+ * respectively. {@see parseFootnotePlaceholders()}
+ */
+ public string $fn_backlink_title = "";
+ public string $fn_backlink_label = "";
+
+ /**
+ * Class name for table cell alignment (%% replaced left/center/right)
+ * For instance: 'go-%%' becomes 'go-left' or 'go-right' or 'go-center'
+ * If empty, the align attribute is used instead of a class name.
+ */
+ public string $table_align_class_tmpl = '';
+
+ /**
+ * Optional class prefix for fenced code block.
+ */
+ public string $code_class_prefix = "";
+
+ /**
+ * Class attribute for code blocks goes on the `code` tag;
+ * setting this to true will put attributes on the `pre` tag instead.
+ */
+ public bool $code_attr_on_pre = false;
+
+ /**
+ * Predefined abbreviations.
+ */
+ public array $predef_abbr = array();
+
+ /**
+ * Only convert atx-style headers if there's a space between the header and #
+ */
+ public bool $hashtag_protection = false;
+
+ /**
+ * Determines whether footnotes should be appended to the end of the document.
+ * If true, footnote html can be retrieved from $this->footnotes_assembled.
+ */
+ public bool $omit_footnotes = false;
+
+
+ /**
+ * After parsing, the HTML for the list of footnotes appears here.
+ * This is available only if $omit_footnotes == true.
+ *
+ * Note: when placing the content of `footnotes_assembled` on the page,
+ * consider adding the attribute `role="doc-endnotes"` to the `div` or
+ * `section` that will enclose the list of footnotes so they are
+ * reachable to accessibility tools the same way they would be with the
+ * default HTML output.
+ */
+ public ?string $footnotes_assembled = null;
+
+ /**
+ * Parser implementation
+ */
+
+ /**
+ * Constructor function. Initialize the parser object.
+ * @return void
+ */
+ public function __construct() {
+ // Add extra escapable characters before parent constructor
+ // initialize the table.
+ $this->escape_chars .= ':|';
+
+ // Insert extra document, block, and span transformations.
+ // Parent constructor will do the sorting.
+ $this->document_gamut += array(
+ "doFencedCodeBlocks" => 5,
+ "stripFootnotes" => 15,
+ "stripAbbreviations" => 25,
+ "appendFootnotes" => 50,
+ );
+ $this->block_gamut += array(
+ "doFencedCodeBlocks" => 5,
+ "doTables" => 15,
+ "doDefLists" => 45,
+ );
+ $this->span_gamut += array(
+ "doFootnotes" => 5,
+ "doAbbreviations" => 70,
+ );
+
+ $this->enhanced_ordered_list = true;
+ parent::__construct();
+ }
+
+
+ /**
+ * Extra variables used during extra transformations.
+ */
+ protected array $footnotes = array();
+ protected array $footnotes_ordered = array();
+ protected array $footnotes_ref_count = array();
+ protected array $footnotes_numbers = array();
+ protected array $abbr_desciptions = array();
+ protected string $abbr_word_re = '';
+
+ /**
+ * Give the current footnote number.
+ */
+ protected int $footnote_counter = 1;
+
+ /**
+ * Ref attribute for links
+ */
+ protected array $ref_attr = array();
+
+ /**
+ * Setting up Extra-specific variables.
+ */
+ protected function setup() {
+ parent::setup();
+
+ $this->footnotes = array();
+ $this->footnotes_ordered = array();
+ $this->footnotes_ref_count = array();
+ $this->footnotes_numbers = array();
+ $this->abbr_desciptions = array();
+ $this->abbr_word_re = '';
+ $this->footnote_counter = 1;
+ $this->footnotes_assembled = null;
+
+ foreach ($this->predef_abbr as $abbr_word => $abbr_desc) {
+ if ($this->abbr_word_re)
+ $this->abbr_word_re .= '|';
+ $this->abbr_word_re .= preg_quote($abbr_word);
+ $this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
+ }
+ }
+
+ /**
+ * Clearing Extra-specific variables.
+ */
+ protected function teardown() {
+ $this->footnotes = array();
+ $this->footnotes_ordered = array();
+ $this->footnotes_ref_count = array();
+ $this->footnotes_numbers = array();
+ $this->abbr_desciptions = array();
+ $this->abbr_word_re = '';
+
+ if ( ! $this->omit_footnotes )
+ $this->footnotes_assembled = null;
+
+ parent::teardown();
+ }
+
+
+ /**
+ * Extra attribute parser
+ */
+ /**
+ * Expression to use to catch attributes (includes the braces)
+ */
+ protected string $id_class_attr_catch_re = '\{((?>[ ]*[#.a-z][-_:a-zA-Z0-9=]+){1,})[ ]*\}';
+
+ /**
+ * Expression to use when parsing in a context when no capture is desired
+ */
+ protected string $id_class_attr_nocatch_re = '\{(?>[ ]*[#.a-z][-_:a-zA-Z0-9=]+){1,}[ ]*\}';
+
+ /**
+ * Parse attributes caught by the $this->id_class_attr_catch_re expression
+ * and return the HTML-formatted list of attributes.
+ *
+ * Currently supported attributes are .class and #id.
+ *
+ * In addition, this method also supports supplying a default Id value,
+ * which will be used to populate the id attribute in case it was not
+ * overridden.
+ * @param string $tag_name
+ * @param string $attr
+ * @param mixed $defaultIdValue
+ * @param array $classes
+ * @return string
+ */
+ protected function doExtraAttributes($tag_name, $attr, $defaultIdValue = null, $classes = array()) {
+ if (empty($attr) && !$defaultIdValue && empty($classes)) {
+ return "";
+ }
+
+ // Split on components
+ preg_match_all('/[#.a-z][-_:a-zA-Z0-9=]+/', $attr, $matches);
+ $elements = $matches[0];
+
+ // Handle classes and IDs (only first ID taken into account)
+ $attributes = array();
+ $id = false;
+ foreach ($elements as $element) {
+ if ($element[0] === '.') {
+ $classes[] = substr($element, 1);
+ } else if ($element[0] === '#') {
+ if ($id === false) $id = substr($element, 1);
+ } else if (strpos($element, '=') > 0) {
+ $parts = explode('=', $element, 2);
+ $attributes[] = $parts[0] . '="' . $parts[1] . '"';
+ }
+ }
+
+ if ($id === false || $id === '') {
+ $id = $defaultIdValue;
+ }
+
+ // Compose attributes as string
+ $attr_str = "";
+ if (!empty($id)) {
+ $attr_str .= ' id="'.$this->encodeAttribute($id) .'"';
+ }
+ if (!empty($classes)) {
+ $attr_str .= ' class="'. implode(" ", $classes) . '"';
+ }
+ if (!$this->no_markup && !empty($attributes)) {
+ $attr_str .= ' '.implode(" ", $attributes);
+ }
+ return $attr_str;
+ }
+
+ /**
+ * Strips link definitions from text, stores the URLs and titles in
+ * hash references.
+ * @param string $text
+ * @return string
+ */
+ protected function stripLinkDefinitions($text) {
+ $less_than_tab = $this->tab_width - 1;
+
+ // Link defs are in the form: ^[id]: url "optional title"
+ $text = preg_replace_callback('{
+ ^[ ]{0,'.$less_than_tab.'}\[(.+)\][ ]?: # id = $1
+ [ ]*
+ \n? # maybe *one* newline
+ [ ]*
+ (?:
+ <(.+?)> # url = $2
+ |
+ (\S+?) # url = $3
+ )
+ [ ]*
+ \n? # maybe one newline
+ [ ]*
+ (?:
+ (?<=\s) # lookbehind for whitespace
+ ["(]
+ (.*?) # title = $4
+ [")]
+ [ ]*
+ )? # title is optional
+ (?:[ ]* '.$this->id_class_attr_catch_re.' )? # $5 = extra id & class attr
+ (?:\n+|\Z)
+ }xm',
+ array($this, '_stripLinkDefinitions_callback'),
+ $text);
+ return $text;
+ }
+
+ /**
+ * Strip link definition callback
+ * @param array $matches
+ * @return string
+ */
+ protected function _stripLinkDefinitions_callback($matches) {
+ $link_id = strtolower($matches[1]);
+ $url = $matches[2] == '' ? $matches[3] : $matches[2];
+ $this->urls[$link_id] = $url;
+ $this->titles[$link_id] =& $matches[4];
+ $this->ref_attr[$link_id] = $this->doExtraAttributes("", $dummy =& $matches[5]);
+ return ''; // String that will replace the block
+ }
+
+
+ /**
+ * HTML block parser
+ */
+ /**
+ * Tags that are always treated as block tags
+ */
+ protected string $block_tags_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|form|fieldset|iframe|hr|legend|article|section|nav|aside|hgroup|header|footer|figcaption|figure|details|summary';
+
+ /**
+ * Tags treated as block tags only if the opening tag is alone on its line
+ */
+ protected string $context_block_tags_re = 'script|noscript|style|ins|del|iframe|object|source|track|param|math|svg|canvas|audio|video';
+
+ /**
+ * Tags where markdown="1" default to span mode:
+ */
+ protected string $contain_span_tags_re = 'p|h[1-6]|li|dd|dt|td|th|legend|address';
+
+ /**
+ * Tags which must not have their contents modified, no matter where
+ * they appear
+ */
+ protected string $clean_tags_re = 'script|style|math|svg';
+
+ /**
+ * Tags that do not need to be closed.
+ */
+ protected string $auto_close_tags_re = 'hr|img|param|source|track';
+
+ /**
+ * Hashify HTML Blocks and "clean tags".
+ *
+ * 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
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.
+ *
+ * This works by calling _HashHTMLBlocks_InMarkdown, which then calls
+ * _HashHTMLBlocks_InHTML when it encounter block tags. When the markdown="1"
+ * attribute is found within a tag, _HashHTMLBlocks_InHTML calls back
+ * _HashHTMLBlocks_InMarkdown to handle the Markdown syntax within the tag.
+ * These two functions are calling each other. It's recursive!
+ * @param string $text
+ * @return string
+ */
+ protected function hashHTMLBlocks($text) {
+ if ($this->no_markup) {
+ return $text;
+ }
+
+ // Call the HTML-in-Markdown hasher.
+ list($text, ) = $this->_hashHTMLBlocks_inMarkdown($text);
+
+ return $text;
+ }
+
+ /**
+ * Parse markdown text, calling _HashHTMLBlocks_InHTML for block tags.
+ *
+ * * $indent is the number of space to be ignored when checking for code
+ * blocks. This is important because if we don't take the indent into
+ * account, something like this (which looks right) won't work as expected:
+ *
+ *
+ *
+ * Hello World. <-- Is this a Markdown code block or text?
+ *
<-- Is this a Markdown code block or a real tag?
+ *
+ *
+ * If you don't like this, just don't indent the tag on which
+ * you apply the markdown="1" attribute.
+ *
+ * * If $enclosing_tag_re is not empty, stops at the first unmatched closing
+ * tag with that name. Nested tags supported.
+ *
+ * * If $span is true, text inside must treated as span. So any double
+ * newline will be replaced by a single newline so that it does not create
+ * paragraphs.
+ *
+ * Returns an array of that form: ( processed text , remaining text )
+ *
+ * @param string $text
+ * @param integer $indent
+ * @param string $enclosing_tag_re
+ * @param boolean $span
+ * @return array
+ */
+ protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
+ $enclosing_tag_re = '', $span = false)
+ {
+
+ if ($text === '') return array('', '');
+
+ // Regex to check for the presense of newlines around a block tag.
+ $newline_before_re = '/(?:^\n?|\n\n)*$/';
+ $newline_after_re =
+ '{
+ ^ # Start of text following the tag.
+ (?>[ ]*)? # Optional comment.
+ [ ]*\n # Must be followed by newline.
+ }xs';
+
+ // Regex to match any tag.
+ $block_tag_re =
+ '{
+ ( # $2: Capture whole tag.
+ # Tag name.
+ ' . $this->block_tags_re . ' |
+ ' . $this->context_block_tags_re . ' |
+ ' . $this->clean_tags_re . ' |
+ (?!\s)'.$enclosing_tag_re . '
+ )
+ (?:
+ (?=[\s"\'/a-zA-Z0-9]) # Allowed characters after tag name.
+ (?>
+ ".*?" | # Double quotes (can contain `>`)
+ \'.*?\' | # Single quotes (can contain `>`)
+ .+? # Anything but quotes and `>`.
+ )*?
+ )?
+ > # End of tag.
+ |
+ # HTML Comment
+ |
+ <\?.*?\?> | <%.*?%> # Processing instruction
+ |
+ # CData Block
+ ' . ( !$span ? ' # If not in span.
+ |
+ # Indented code block
+ (?: ^[ ]*\n | ^ | \n[ ]*\n )
+ [ ]{' . ($indent + 4) . '}[^\n]* \n
+ (?>
+ (?: [ ]{' . ($indent + 4) . '}[^\n]* | [ ]* ) \n
+ )*
+ |
+ # Fenced code block marker
+ (?<= ^ | \n )
+ [ ]{0,' . ($indent + 3) . '}(?:~{3,}|`{3,})
+ [ ]*
+ (?: \.?[-_:a-zA-Z0-9]+ )? # standalone class name
+ [ ]*
+ (?: ' . $this->id_class_attr_nocatch_re . ' )? # extra attributes
+ [ ]*
+ (?= \n )
+ ' : '' ) . ' # End (if not is span).
+ |
+ # Code span marker
+ # Note, this regex needs to go after backtick fenced
+ # code blocks but it should also be kept outside of the
+ # "if not in span" condition adding backticks to the parser
+ `+
+ )
+ }xs';
+
+
+ $depth = 0; // Current depth inside the tag tree.
+ $parsed = ""; // Parsed text that will be returned.
+
+ // Loop through every tag until we find the closing tag of the parent
+ // or loop until reaching the end of text if no parent tag specified.
+ do {
+ // Split the text using the first $tag_match pattern found.
+ // Text before pattern will be first in the array, text after
+ // pattern will be at the end, and between will be any catches made
+ // by the pattern.
+ $parts = preg_split($block_tag_re, $text, 2,
+ PREG_SPLIT_DELIM_CAPTURE);
+
+ // If in Markdown span mode, add a empty-string span-level hash
+ // after each newline to prevent triggering any block element.
+ if ($span) {
+ $void = $this->hashPart("", ':');
+ $newline = "\n$void";
+ $parts[0] = $void . str_replace("\n", $newline, $parts[0]) . $void;
+ }
+
+ $parsed .= $parts[0]; // Text before current tag.
+
+ // If end of $text has been reached. Stop loop.
+ if (count($parts) < 3) {
+ $text = "";
+ break;
+ }
+
+ $tag = $parts[1]; // Tag to handle.
+ $text = $parts[2]; // Remaining text after current tag.
+
+ // Check for: Fenced code block marker.
+ // Note: need to recheck the whole tag to disambiguate backtick
+ // fences from code spans
+ if (preg_match('{^\n?([ ]{0,' . ($indent + 3) . '})(~{3,}|`{3,})[ ]*(?:\.?[-_:a-zA-Z0-9]+)?[ ]*(?:' . $this->id_class_attr_nocatch_re . ')?[ ]*\n?$}', $tag, $capture)) {
+ // Fenced code block marker: find matching end marker.
+ $fence_indent = strlen($capture[1]); // use captured indent in re
+ $fence_re = $capture[2]; // use captured fence in re
+ if (preg_match('{^(?>.*\n)*?[ ]{' . ($fence_indent) . '}' . $fence_re . '[ ]*(?:\n|$)}', $text,
+ $matches))
+ {
+ // End marker found: pass text unchanged until marker.
+ $parsed .= $tag . $matches[0];
+ $text = substr($text, strlen($matches[0]));
+ }
+ else {
+ // No end marker: just skip it.
+ $parsed .= $tag;
+ }
+ }
+ // Check for: Indented code block.
+ else if ($tag[0] === "\n" || $tag[0] === " ") {
+ // Indented code block: pass it unchanged, will be handled
+ // later.
+ $parsed .= $tag;
+ }
+ // Check for: Code span marker
+ // Note: need to check this after backtick fenced code blocks
+ else if ($tag[0] === "`") {
+ // Find corresponding end marker.
+ $tag_re = preg_quote($tag);
+ if (preg_match('{^(?>.+?|\n(?!\n))*?(?block_tags_re . ')\b}', $tag) ||
+ ( preg_match('{^<(?:' . $this->context_block_tags_re . ')\b}', $tag) &&
+ preg_match($newline_before_re, $parsed) &&
+ preg_match($newline_after_re, $text) )
+ )
+ {
+ // Need to parse tag and following text using the HTML parser.
+ list($block_text, $text) =
+ $this->_hashHTMLBlocks_inHTML($tag . $text, "hashBlock", true);
+
+ // Make sure it stays outside of any paragraph by adding newlines.
+ $parsed .= "\n\n$block_text\n\n";
+ }
+ // Check for: Clean tag (like script, math)
+ // HTML Comments, processing instructions.
+ else if (preg_match('{^<(?:' . $this->clean_tags_re . ')\b}', $tag) ||
+ $tag[1] === '!' || $tag[1] === '?')
+ {
+ // Need to parse tag and following text using the HTML parser.
+ // (don't check for markdown attribute)
+ list($block_text, $text) =
+ $this->_hashHTMLBlocks_inHTML($tag . $text, "hashClean", false);
+
+ $parsed .= $block_text;
+ }
+ // Check for: Tag with same name as enclosing tag.
+ else if ($enclosing_tag_re !== '' &&
+ // Same name as enclosing tag.
+ preg_match('{^= 0);
+
+ return array($parsed, $text);
+ }
+
+ /**
+ * Parse HTML, calling _HashHTMLBlocks_InMarkdown for block tags.
+ *
+ * * Calls $hash_method to convert any blocks.
+ * * Stops when the first opening tag closes.
+ * * $md_attr indicate if the use of the `markdown="1"` attribute is allowed.
+ * (it is not inside clean tags)
+ *
+ * Returns an array of that form: ( processed text , remaining text )
+ * @param string $text
+ * @param string $hash_method
+ * @param bool $md_attr Handle `markdown="1"` attribute
+ * @return array
+ */
+ protected function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) {
+ if ($text === '') return array('', '');
+
+ // Regex to match `markdown` attribute inside of a tag.
+ $markdown_attr_re = '
+ {
+ \s* # Eat whitespace before the `markdown` attribute
+ markdown
+ \s*=\s*
+ (?>
+ (["\']) # $1: quote delimiter
+ (.*?) # $2: attribute value
+ \1 # matching delimiter
+ |
+ ([^\s>]*) # $3: unquoted attribute value
+ )
+ () # $4: make $3 always defined (avoid warnings)
+ }xs';
+
+ // Regex to match any tag.
+ $tag_re = '{
+ ( # $2: Capture whole tag.
+
+ ".*?" | # Double quotes (can contain `>`)
+ \'.*?\' | # Single quotes (can contain `>`)
+ .+? # Anything but quotes and `>`.
+ )*?
+ )?
+ > # End of tag.
+ |
+ # HTML Comment
+ |
+ <\?.*?\?> | <%.*?%> # Processing instruction
+ |
+ # CData Block
+ )
+ }xs';
+
+ $original_text = $text; // Save original text in case of faliure.
+
+ $depth = 0; // Current depth inside the tag tree.
+ $block_text = ""; // Temporary text holder for current text.
+ $parsed = ""; // Parsed text that will be returned.
+ $base_tag_name_re = '';
+
+ // Get the name of the starting tag.
+ // (This pattern makes $base_tag_name_re safe without quoting.)
+ if (preg_match('/^<([\w:$]*)\b/', $text, $matches))
+ $base_tag_name_re = $matches[1];
+
+ // Loop through every tag until we find the corresponding closing tag.
+ do {
+ // Split the text using the first $tag_match pattern found.
+ // Text before pattern will be first in the array, text after
+ // pattern will be at the end, and between will be any catches made
+ // by the pattern.
+ $parts = preg_split($tag_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
+
+ if (count($parts) < 3) {
+ // End of $text reached with unbalenced tag(s).
+ // In that case, we return original text unchanged and pass the
+ // first character as filtered to prevent an infinite loop in the
+ // parent function.
+ return array($original_text[0], substr($original_text, 1));
+ }
+
+ $block_text .= $parts[0]; // Text before current tag.
+ $tag = $parts[1]; // Tag to handle.
+ $text = $parts[2]; // Remaining text after current tag.
+
+ // Check for: Auto-close tag (like )
+ // Comments and Processing Instructions.
+ if (preg_match('{^auto_close_tags_re . ')\b}', $tag) ||
+ $tag[1] === '!' || $tag[1] === '?')
+ {
+ // Just add the tag to the block as if it was text.
+ $block_text .= $tag;
+ }
+ else {
+ // Increase/decrease nested tag count. Only do so if
+ // the tag's name match base tag's.
+ if (preg_match('{^contain_span_tags_re . ')\b}', $tag));
+
+ // Calculate indent before tag.
+ if (preg_match('/(?:^|\n)( *?)(?! ).*?$/', $block_text, $matches)) {
+ $strlen = $this->utf8_strlen;
+ $indent = $strlen($matches[1], 'UTF-8');
+ } else {
+ $indent = 0;
+ }
+
+ // End preceding block with this tag.
+ $block_text .= $tag;
+ $parsed .= $this->$hash_method($block_text);
+
+ // Get enclosing tag name for the ParseMarkdown function.
+ // (This pattern makes $tag_name_re safe without quoting.)
+ preg_match('/^<([\w:$]*)\b/', $tag, $matches);
+ $tag_name_re = $matches[1];
+
+ // Parse the content using the HTML-in-Markdown parser.
+ list ($block_text, $text)
+ = $this->_hashHTMLBlocks_inMarkdown($text, $indent,
+ $tag_name_re, $span_mode);
+
+ // Outdent markdown text.
+ if ($indent > 0) {
+ $block_text = preg_replace("/^[ ]{1,$indent}/m", "",
+ $block_text);
+ }
+
+ // Append tag content to parsed text.
+ if (!$span_mode) {
+ $parsed .= "\n\n$block_text\n\n";
+ } else {
+ $parsed .= (string) $block_text;
+ }
+
+ // Start over with a new block.
+ $block_text = "";
+ }
+ else $block_text .= $tag;
+ }
+
+ } while ($depth > 0);
+
+ // Hash last block text that wasn't processed inside the loop.
+ $parsed .= $this->$hash_method($block_text);
+
+ return array($parsed, $text);
+ }
+
+ /**
+ * Called whenever a tag must be hashed when a function inserts a "clean" tag
+ * in $text, it passes through this function and is automaticaly escaped,
+ * blocking invalid nested overlap.
+ * @param string $text
+ * @return string
+ */
+ protected function hashClean($text) {
+ return $this->hashPart($text, 'C');
+ }
+
+ /**
+ * Turn Markdown link shortcuts into XHTML tags.
+ * @param string $text
+ * @return string
+ */
+ protected function doAnchors($text) {
+ if ($this->in_anchor) {
+ return $text;
+ }
+ $this->in_anchor = true;
+
+ // First, handle reference-style links: [link text] [id]
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ (' . $this->nested_brackets_re . ') # link text = $2
+ \]
+
+ [ ]? # one optional space
+ (?:\n[ ]*)? # one optional newline followed by spaces
+
+ \[
+ (.*?) # id = $3
+ \]
+ )
+ }xs',
+ array($this, '_doAnchors_reference_callback'), $text);
+
+ // Next, inline-style links: [link text](url "optional title")
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ (' . $this->nested_brackets_re . ') # link text = $2
+ \]
+ \( # literal paren
+ [ \n]*
+ (?:
+ <(.+?)> # href = $3
+ |
+ (' . $this->nested_url_parenthesis_re . ') # href = $4
+ )
+ [ \n]*
+ ( # $5
+ ([\'"]) # quote char = $6
+ (.*?) # Title = $7
+ \6 # matching quote
+ [ \n]* # ignore any spaces/tabs between closing quote and )
+ )? # title is optional
+ \)
+ (?:[ ]? ' . $this->id_class_attr_catch_re . ' )? # $8 = id/class attributes
+ )
+ }xs',
+ array($this, '_doAnchors_inline_callback'), $text);
+
+ // Last, handle reference-style shortcuts: [link text]
+ // These must come last in case you've also got [link text][1]
+ // or [link text](/foo)
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ ([^\[\]]+) # link text = $2; can\'t contain [ or ]
+ \]
+ )
+ }xs',
+ array($this, '_doAnchors_reference_callback'), $text);
+
+ $this->in_anchor = false;
+ return $text;
+ }
+
+ /**
+ * Callback for reference anchors
+ * @param array $matches
+ * @return string
+ */
+ protected function _doAnchors_reference_callback($matches) {
+ $whole_match = $matches[1];
+ $link_text = $matches[2];
+ $link_id =& $matches[3];
+
+ if ($link_id == "") {
+ // for shortcut links like [this][] or [this].
+ $link_id = $link_text;
+ }
+
+ // lower-case and turn embedded newlines into spaces
+ $link_id = strtolower($link_id);
+ $link_id = preg_replace('{[ ]?\n}', ' ', $link_id);
+
+ if (isset($this->urls[$link_id])) {
+ $url = $this->urls[$link_id];
+ $url = $this->encodeURLAttribute($url);
+
+ $result = "titles[$link_id] ) ) {
+ $title = $this->titles[$link_id];
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+ if (isset($this->ref_attr[$link_id]))
+ $result .= $this->ref_attr[$link_id];
+
+ $link_text = $this->runSpanGamut($link_text);
+ $result .= ">$link_text";
+ $result = $this->hashPart($result);
+ }
+ else {
+ $result = $whole_match;
+ }
+ return $result;
+ }
+
+ /**
+ * Callback for inline anchors
+ * @param array $matches
+ * @return string
+ */
+ protected function _doAnchors_inline_callback($matches) {
+ $link_text = $this->runSpanGamut($matches[2]);
+ $url = $matches[3] === '' ? $matches[4] : $matches[3];
+ $title_quote =& $matches[6];
+ $title =& $matches[7];
+ $attr = $this->doExtraAttributes("a", $dummy =& $matches[8]);
+
+ // if the URL was of the form it got caught by the HTML
+ // tag parser and hashed. Need to reverse the process before using the URL.
+ $unhashed = $this->unhash($url);
+ if ($unhashed !== $url)
+ $url = preg_replace('/^<(.*)>$/', '\1', $unhashed);
+
+ $url = $this->encodeURLAttribute($url);
+
+ $result = "encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+ $result .= $attr;
+
+ $link_text = $this->runSpanGamut($link_text);
+ $result .= ">$link_text";
+
+ return $this->hashPart($result);
+ }
+
+ /**
+ * Turn Markdown image shortcuts into tags.
+ * @param string $text
+ * @return string
+ */
+ protected function doImages($text) {
+ // First, handle reference-style labeled images: ![alt text][id]
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ !\[
+ (' . $this->nested_brackets_re . ') # alt text = $2
+ \]
+
+ [ ]? # one optional space
+ (?:\n[ ]*)? # one optional newline followed by spaces
+
+ \[
+ (.*?) # id = $3
+ \]
+
+ )
+ }xs',
+ array($this, '_doImages_reference_callback'), $text);
+
+ // Next, handle inline images: 
+ // Don't forget: encode * and _
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ !\[
+ (' . $this->nested_brackets_re . ') # alt text = $2
+ \]
+ \s? # One optional whitespace character
+ \( # literal paren
+ [ \n]*
+ (?:
+ <(\S*)> # src url = $3
+ |
+ (' . $this->nested_url_parenthesis_re . ') # src url = $4
+ )
+ [ \n]*
+ ( # $5
+ ([\'"]) # quote char = $6
+ (.*?) # title = $7
+ \6 # matching quote
+ [ \n]*
+ )? # title is optional
+ \)
+ (?:[ ]? ' . $this->id_class_attr_catch_re . ' )? # $8 = id/class attributes
+ )
+ }xs',
+ array($this, '_doImages_inline_callback'), $text);
+
+ return $text;
+ }
+
+ /**
+ * Callback for referenced images
+ * @param array $matches
+ * @return string
+ */
+ protected function _doImages_reference_callback($matches) {
+ $whole_match = $matches[1];
+ $alt_text = $matches[2];
+ $link_id = strtolower($matches[3]);
+
+ if ($link_id === "") {
+ $link_id = strtolower($alt_text); // for shortcut links like ![this][].
+ }
+
+ $alt_text = $this->encodeAttribute($alt_text);
+ if (isset($this->urls[$link_id])) {
+ $url = $this->encodeURLAttribute($this->urls[$link_id]);
+ $result = "titles[$link_id])) {
+ $title = $this->titles[$link_id];
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+ if (isset($this->ref_attr[$link_id])) {
+ $result .= $this->ref_attr[$link_id];
+ }
+ $result .= $this->empty_element_suffix;
+ $result = $this->hashPart($result);
+ }
+ else {
+ // If there's no such link ID, leave intact:
+ $result = $whole_match;
+ }
+
+ return $result;
+ }
+
+ /**
+ * Callback for inline images
+ * @param array $matches
+ * @return string
+ */
+ protected function _doImages_inline_callback($matches) {
+ $alt_text = $matches[2];
+ $url = $matches[3] === '' ? $matches[4] : $matches[3];
+ $title_quote =& $matches[6];
+ $title =& $matches[7];
+ $attr = $this->doExtraAttributes("img", $dummy =& $matches[8]);
+
+ $alt_text = $this->encodeAttribute($alt_text);
+ $url = $this->encodeURLAttribute($url);
+ $result = "encodeAttribute($title);
+ $result .= " title=\"$title\""; // $title already quoted
+ }
+ $result .= $attr;
+ $result .= $this->empty_element_suffix;
+
+ return $this->hashPart($result);
+ }
+
+ /**
+ * Process markdown headers. Redefined to add ID and class attribute support.
+ * @param string $text
+ * @return string
+ */
+ protected function doHeaders($text) {
+ // Setext-style headers:
+ // Header 1 {#header1}
+ // ========
+ //
+ // Header 2 {#header2 .class1 .class2}
+ // --------
+ //
+ $text = preg_replace_callback(
+ '{
+ (^.+?) # $1: Header text
+ (?:[ ]+ ' . $this->id_class_attr_catch_re . ' )? # $3 = id/class attributes
+ [ ]*\n(=+|-+)[ ]*\n+ # $3: Header footer
+ }mx',
+ array($this, '_doHeaders_callback_setext'), $text);
+
+ // atx-style headers:
+ // # Header 1 {#header1}
+ // ## Header 2 {#header2}
+ // ## Header 2 with closing hashes ## {#header3.class1.class2}
+ // ...
+ // ###### Header 6 {.class2}
+ //
+ $text = preg_replace_callback('{
+ ^(\#{1,6}) # $1 = string of #\'s
+ [ ]'.($this->hashtag_protection ? '+' : '*').'
+ (.+?) # $2 = Header text
+ [ ]*
+ \#* # optional closing #\'s (not counted)
+ (?:[ ]+ ' . $this->id_class_attr_catch_re . ' )? # $3 = id/class attributes
+ [ ]*
+ \n+
+ }xm',
+ array($this, '_doHeaders_callback_atx'), $text);
+
+ return $text;
+ }
+
+ /**
+ * Callback for setext headers
+ * @param array $matches
+ * @return string
+ */
+ protected function _doHeaders_callback_setext($matches) {
+ if ($matches[3] === '-' && preg_match('{^- }', $matches[1])) {
+ return $matches[0];
+ }
+
+ $level = $matches[3][0] === '=' ? 1 : 2;
+
+ $defaultId = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[1]) : null;
+
+ $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[2], $defaultId);
+ $block = "" . $this->runSpanGamut($matches[1]) . "";
+ return "\n" . $this->hashBlock($block) . "\n\n";
+ }
+
+ /**
+ * Callback for atx headers
+ * @param array $matches
+ * @return string
+ */
+ protected function _doHeaders_callback_atx($matches) {
+ $level = strlen($matches[1]);
+
+ $defaultId = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[2]) : null;
+ $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[3], $defaultId);
+ $block = "" . $this->runSpanGamut($matches[2]) . "";
+ return "\n" . $this->hashBlock($block) . "\n\n";
+ }
+
+ /**
+ * Form HTML tables.
+ * @param string $text
+ * @return string
+ */
+ protected function doTables($text) {
+ $less_than_tab = $this->tab_width - 1;
+ // Find tables with leading pipe.
+ //
+ // | Header 1 | Header 2
+ // | -------- | --------
+ // | Cell 1 | Cell 2
+ // | Cell 3 | Cell 4
+ $text = preg_replace_callback('
+ {
+ ^ # Start of a line
+ [ ]{0,' . $less_than_tab . '} # Allowed whitespace.
+ [|] # Optional leading pipe (present)
+ (.+) \n # $1: Header row (at least one pipe)
+
+ [ ]{0,' . $less_than_tab . '} # Allowed whitespace.
+ [|] ([ ]*[-:]+[-| :]*) \n # $2: Header underline
+
+ ( # $3: Cells
+ (?>
+ [ ]* # Allowed whitespace.
+ [|] .* \n # Row content.
+ )*
+ )
+ (?=\n|\Z) # Stop at final double newline.
+ }xm',
+ array($this, '_doTable_leadingPipe_callback'), $text);
+
+ // Find tables without leading pipe.
+ //
+ // Header 1 | Header 2
+ // -------- | --------
+ // Cell 1 | Cell 2
+ // Cell 3 | Cell 4
+ $text = preg_replace_callback('
+ {
+ ^ # Start of a line
+ [ ]{0,' . $less_than_tab . '} # Allowed whitespace.
+ (\S.*[|].*) \n # $1: Header row (at least one pipe)
+
+ [ ]{0,' . $less_than_tab . '} # Allowed whitespace.
+ ([-:]+[ ]*[|][-| :]*) \n # $2: Header underline
+
+ ( # $3: Cells
+ (?>
+ .* [|] .* \n # Row content
+ )*
+ )
+ (?=\n|\Z) # Stop at final double newline.
+ }xm',
+ array($this, '_DoTable_callback'), $text);
+
+ return $text;
+ }
+
+ /**
+ * Callback for removing the leading pipe for each row
+ * @param array $matches
+ * @return string
+ */
+ protected function _doTable_leadingPipe_callback($matches) {
+ $head = $matches[1];
+ $underline = $matches[2];
+ $content = $matches[3];
+
+ $content = preg_replace('/^ *[|]/m', '', $content);
+
+ return $this->_doTable_callback(array($matches[0], $head, $underline, $content));
+ }
+
+ /**
+ * Make the align attribute in a table
+ * @param string $alignname
+ * @return string
+ */
+ protected function _doTable_makeAlignAttr($alignname) {
+ if (empty($this->table_align_class_tmpl)) {
+ return " align=\"$alignname\"";
+ }
+
+ $classname = str_replace('%%', $alignname, $this->table_align_class_tmpl);
+ return " class=\"$classname\"";
+ }
+
+ /**
+ * Calback for processing tables
+ * @param array $matches
+ * @return string
+ */
+ protected function _doTable_callback($matches) {
+ $head = $matches[1];
+ $underline = $matches[2];
+ $content = $matches[3];
+
+ // Remove any tailing pipes for each line.
+ $head = preg_replace('/[|] *$/m', '', $head);
+ $underline = preg_replace('/[|] *$/m', '', $underline);
+ $content = preg_replace('/[|] *$/m', '', $content);
+
+ // Reading alignement from header underline.
+ $separators = preg_split('/ *[|] */', $underline);
+ foreach ($separators as $n => $s) {
+ if (preg_match('/^ *-+: *$/', $s))
+ $attr[$n] = $this->_doTable_makeAlignAttr('right');
+ else if (preg_match('/^ *:-+: *$/', $s))
+ $attr[$n] = $this->_doTable_makeAlignAttr('center');
+ else if (preg_match('/^ *:-+ *$/', $s))
+ $attr[$n] = $this->_doTable_makeAlignAttr('left');
+ else
+ $attr[$n] = '';
+ }
+
+ // Parsing span elements, including code spans, character escapes,
+ // and inline HTML tags, so that pipes inside those gets ignored.
+ $head = $this->parseSpan($head);
+ $headers = preg_split('/ *[|] */', $head);
+ $col_count = count($headers);
+ $attr = array_pad($attr, $col_count, '');
+
+ // Write column headers.
+ $text = "
tags and unhashify HTML blocks
+ foreach ($grafs as $key => $value) {
+ $value = trim($this->runSpanGamut($value));
+
+ // Check if this should be enclosed in a paragraph.
+ // Clean tag hashes & block tag hashes are left alone.
+ $is_p = $wrap_in_p && !preg_match('/^B\x1A[0-9]+B|^C\x1A[0-9]+C$/', $value);
+
+ if ($is_p) {
+ $value = "
$value
";
+ }
+ $grafs[$key] = $value;
+ }
+
+ // Join grafs in one text, then unhash HTML tags.
+ $text = implode("\n\n", $grafs);
+
+ // Finish by removing any tag hashes still present in $text.
+ $text = $this->unhash($text);
+
+ return $text;
+ }
+
+
+ /**
+ * Footnotes - Strips link definitions from text, stores the URLs and
+ * titles in hash references.
+ * @param string $text
+ * @return string
+ */
+ protected function stripFootnotes($text) {
+ $less_than_tab = $this->tab_width - 1;
+
+ // Link defs are in the form: [^id]: url "optional title"
+ $text = preg_replace_callback('{
+ ^[ ]{0,' . $less_than_tab . '}\[\^(.+?)\][ ]?: # note_id = $1
+ [ ]*
+ \n? # maybe *one* newline
+ ( # text = $2 (no blank lines allowed)
+ (?:
+ .+ # actual text
+ |
+ \n # newlines but
+ (?!\[.+?\][ ]?:\s)# negative lookahead for footnote or link definition marker.
+ (?!\n+[ ]{0,3}\S)# ensure line is not blank and followed
+ # by non-indented content
+ )*
+ )
+ }xm',
+ array($this, '_stripFootnotes_callback'),
+ $text);
+ return $text;
+ }
+
+ /**
+ * Callback for stripping footnotes
+ * @param array $matches
+ * @return string
+ */
+ protected function _stripFootnotes_callback($matches) {
+ $note_id = $this->fn_id_prefix . $matches[1];
+ $this->footnotes[$note_id] = $this->outdent($matches[2]);
+ return ''; // String that will replace the block
+ }
+
+ /**
+ * Replace footnote references in $text [^id] with a special text-token
+ * which will be replaced by the actual footnote marker in appendFootnotes.
+ * @param string $text
+ * @return string
+ */
+ protected function doFootnotes($text) {
+ if (!$this->in_anchor) {
+ $text = preg_replace('{\[\^(.+?)\]}', "F\x1Afn:\\1\x1A:", $text);
+ }
+ return $text;
+ }
+
+ /**
+ * Append footnote list to text
+ * @param string $text
+ * @return string
+ */
+ protected function appendFootnotes($text) {
+ $text = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}',
+ array($this, '_appendFootnotes_callback'), $text);
+
+ if ( ! empty( $this->footnotes_ordered ) ) {
+ $this->_doFootnotes();
+ if ( ! $this->omit_footnotes ) {
+ $text .= "\n\n";
+ $text .= "
";
+ }
+ }
+ return $text;
+ }
+
+
+ /**
+ * Generates the HTML for footnotes. Called by appendFootnotes, even if
+ * footnotes are not being appended.
+ * @return void
+ */
+ protected function _doFootnotes() {
+ $attr = array();
+ if ($this->fn_backlink_class !== "") {
+ $class = $this->fn_backlink_class;
+ $class = $this->encodeAttribute($class);
+ $attr['class'] = " class=\"$class\"";
+ }
+ $attr['role'] = " role=\"doc-backlink\"";
+ $num = 0;
+
+ $text = "\n\n";
+ while (!empty($this->footnotes_ordered)) {
+ $footnote = reset($this->footnotes_ordered);
+ $note_id = key($this->footnotes_ordered);
+ unset($this->footnotes_ordered[$note_id]);
+ $ref_count = $this->footnotes_ref_count[$note_id];
+ unset($this->footnotes_ref_count[$note_id]);
+ unset($this->footnotes[$note_id]);
+
+ $footnote .= "\n"; // Need to append newline before parsing.
+ $footnote = $this->runBlockGamut("$footnote\n");
+ $footnote = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}',
+ array($this, '_appendFootnotes_callback'), $footnote);
+
+ $num++;
+ $note_id = $this->encodeAttribute($note_id);
+
+ // Prepare backlink, multiple backlinks if multiple references
+ // Do not create empty backlinks if the html is blank
+ $backlink = "";
+ if (!empty($this->fn_backlink_html)) {
+ for ($ref_num = 1; $ref_num <= $ref_count; ++$ref_num) {
+ if (!empty($this->fn_backlink_title)) {
+ $attr['title'] = ' title="' . $this->encodeAttribute($this->fn_backlink_title) . '"';
+ }
+ if (!empty($this->fn_backlink_label)) {
+ $attr['label'] = ' aria-label="' . $this->encodeAttribute($this->fn_backlink_label) . '"';
+ }
+ $parsed_attr = $this->parseFootnotePlaceholders(
+ implode('', $attr),
+ $num,
+ $ref_num
+ );
+ $backlink_text = $this->parseFootnotePlaceholders(
+ $this->fn_backlink_html,
+ $num,
+ $ref_num
+ );
+ $ref_count_mark = $ref_num > 1 ? $ref_num : '';
+ $backlink .= " $backlink_text";
+ }
+ $backlink = trim($backlink);
+ }
+
+ // Add backlink to last paragraph; create new paragraph if needed.
+ if (!empty($backlink)) {
+ if (preg_match('{$}', $footnote)) {
+ $footnote = substr($footnote, 0, -4) . " $backlink";
+ } else {
+ $footnote .= "\n\n
$backlink
";
+ }
+ }
+
+ $text .= "
\n";
+ $text .= $footnote . "\n";
+ $text .= "
\n\n";
+ }
+ $text .= "\n";
+
+ $this->footnotes_assembled = $text;
+ }
+
+ /**
+ * Callback for appending footnotes
+ * @param array $matches
+ * @return string
+ */
+ protected function _appendFootnotes_callback($matches) {
+ $node_id = $this->fn_id_prefix . $matches[1];
+
+ // Create footnote marker only if it has a corresponding footnote *and*
+ // the footnote hasn't been used by another marker.
+ if (isset($this->footnotes[$node_id])) {
+ $num =& $this->footnotes_numbers[$node_id];
+ if (!isset($num)) {
+ // Transfer footnote content to the ordered list and give it its
+ // number
+ $this->footnotes_ordered[$node_id] = $this->footnotes[$node_id];
+ $this->footnotes_ref_count[$node_id] = 1;
+ $num = $this->footnote_counter++;
+ $ref_count_mark = '';
+ } else {
+ $ref_count_mark = $this->footnotes_ref_count[$node_id] += 1;
+ }
+
+ $attr = "";
+ if ($this->fn_link_class !== "") {
+ $class = $this->fn_link_class;
+ $class = $this->encodeAttribute($class);
+ $attr .= " class=\"$class\"";
+ }
+ if ($this->fn_link_title !== "") {
+ $title = $this->fn_link_title;
+ $title = $this->encodeAttribute($title);
+ $attr .= " title=\"$title\"";
+ }
+ $attr .= " role=\"doc-noteref\"";
+
+ $attr = str_replace("%%", $num, $attr);
+ $node_id = $this->encodeAttribute($node_id);
+
+ return
+ "".
+ "$num".
+ "";
+ }
+
+ return "[^" . $matches[1] . "]";
+ }
+
+ /**
+ * Build footnote label by evaluating any placeholders.
+ * - ^^ footnote number
+ * - %% footnote reference number (Nth reference to footnote number)
+ * @param string $label
+ * @param int $footnote_number
+ * @param int $reference_number
+ * @return string
+ */
+ protected function parseFootnotePlaceholders($label, $footnote_number, $reference_number) {
+ return str_replace(
+ array('^^', '%%'),
+ array($footnote_number, $reference_number),
+ $label
+ );
+ }
+
+
+ /**
+ * Abbreviations - strips abbreviations from text, stores titles in hash
+ * references.
+ * @param string $text
+ * @return string
+ */
+ protected function stripAbbreviations($text) {
+ $less_than_tab = $this->tab_width - 1;
+
+ // Link defs are in the form: [id]*: url "optional title"
+ $text = preg_replace_callback('{
+ ^[ ]{0,' . $less_than_tab . '}\*\[(.+?)\][ ]?: # abbr_id = $1
+ (.*) # text = $2 (no blank lines allowed)
+ }xm',
+ array($this, '_stripAbbreviations_callback'),
+ $text);
+ return $text;
+ }
+
+ /**
+ * Callback for stripping abbreviations
+ * @param array $matches
+ * @return string
+ */
+ protected function _stripAbbreviations_callback($matches) {
+ $abbr_word = $matches[1];
+ $abbr_desc = $matches[2];
+ if ($this->abbr_word_re) {
+ $this->abbr_word_re .= '|';
+ }
+ $this->abbr_word_re .= preg_quote($abbr_word);
+ $this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
+ return ''; // String that will replace the block
+ }
+
+ /**
+ * Find defined abbreviations in text and wrap them in elements.
+ * @param string $text
+ * @return string
+ */
+ protected function doAbbreviations($text) {
+ if ($this->abbr_word_re) {
+ // cannot use the /x modifier because abbr_word_re may
+ // contain significant spaces:
+ $text = preg_replace_callback('{' .
+ '(?abbr_word_re . ')' .
+ '(?![\w\x1A])' .
+ '}',
+ array($this, '_doAbbreviations_callback'), $text);
+ }
+ return $text;
+ }
+
+ /**
+ * Callback for processing abbreviations
+ * @param array $matches
+ * @return string
+ */
+ protected function _doAbbreviations_callback($matches) {
+ $abbr = $matches[0];
+ if (isset($this->abbr_desciptions[$abbr])) {
+ $desc = $this->abbr_desciptions[$abbr];
+ if (empty($desc)) {
+ return $this->hashPart("$abbr");
+ }
+ $desc = $this->encodeAttribute($desc);
+ return $this->hashPart("$abbr");
+ }
+ return $matches[0];
+ }
+}
diff --git a/cms/vendor/php-markdown-lib-9.1/Michelf/MarkdownInterface.inc.php b/cms/vendor/php-markdown-lib-9.1/Michelf/MarkdownInterface.inc.php
new file mode 100644
index 0000000..c4e9ac7
--- /dev/null
+++ b/cms/vendor/php-markdown-lib-9.1/Michelf/MarkdownInterface.inc.php
@@ -0,0 +1,9 @@
+
+ * @copyright 2004-2021 Michel Fortin
+ * @copyright (Original Markdown) 2004-2006 John Gruber
+ */
+
+namespace Michelf;
+
+/**
+ * Markdown Parser Interface
+ */
+interface MarkdownInterface {
+ /**
+ * Initialize the parser and return the result of its transform method.
+ * This will work fine for derived classes too.
+ *
+ * @api
+ *
+ * @param string $text
+ * @return string
+ */
+ public static function defaultTransform($text);
+
+ /**
+ * Main function. Performs some preprocessing on the input text
+ * and pass it through the document gamut.
+ *
+ * @api
+ *
+ * @param string $text
+ * @return string
+ */
+ public function transform($text);
+}
diff --git a/cms/vendor/php-markdown-lib-9.1/Readme.md b/cms/vendor/php-markdown-lib-9.1/Readme.md
new file mode 100644
index 0000000..e1eb306
--- /dev/null
+++ b/cms/vendor/php-markdown-lib-9.1/Readme.md
@@ -0,0 +1,437 @@
+PHP Markdown
+============
+
+PHP Markdown Lib 1.9.0 - 1 Dec 2019
+
+by Michel Fortin
+
+
+based on Markdown by John Gruber
+
+
+
+Introduction
+------------
+
+This is a library package that includes the PHP Markdown parser and its
+sibling PHP Markdown Extra with additional features.
+
+Markdown is a text-to-HTML conversion tool for web writers. Markdown
+allows you to write using an easy-to-read, easy-to-write plain text
+format, then convert it to structurally valid XHTML (or HTML).
+
+"Markdown" is actually two things: a plain text markup syntax, and a
+software tool, originally written in Perl, that converts the plain text
+markup to HTML. PHP Markdown is a port to PHP of the original Markdown
+program by John Gruber.
+
+* [Full documentation of the Markdown syntax]()
+ — Daring Fireball (John Gruber)
+* [Markdown Extra syntax additions]()
+ — Michel Fortin
+
+
+Requirement
+-----------
+
+This library package requires PHP 5.3 or later.
+
+Note: The older plugin/library hybrid package for PHP Markdown and
+PHP Markdown Extra is no longer maintained but will work with PHP 4.0.5 and
+later.
+
+Before PHP 5.3.7, pcre.backtrack_limit defaults to 100 000, which is too small
+in many situations. You might need to set it to higher values. Later PHP
+releases defaults to 1 000 000, which is usually fine.
+
+
+Usage
+-----
+
+To use this library with Composer, first install it with:
+
+ $ composer require michelf/php-markdown
+
+Then include Composer's generated vendor/autoload.php to [enable autoloading]:
+
+ require 'vendor/autoload.php';
+
+Without Composer, for autoloading to work, your project needs an autoloader
+compatible with PSR-4 or PSR-0. See the included Readme.php file for a minimal
+autoloader setup. (If you cannot use autoloading, see below.)
+
+With class autoloading in place:
+
+ use Michelf\Markdown;
+ $my_html = Markdown::defaultTransform($my_text);
+
+Markdown Extra syntax is also available the same way:
+
+ use Michelf\MarkdownExtra;
+ $my_html = MarkdownExtra::defaultTransform($my_text);
+
+If you wish to use PHP Markdown with another text filter function
+built to parse HTML, you should filter the text *after* the `transform`
+function call. This is an example with [PHP SmartyPants]:
+
+ use Michelf\Markdown, Michelf\SmartyPants;
+ $my_html = Markdown::defaultTransform($my_text);
+ $my_html = SmartyPants::defaultTransform($my_html);
+
+All these examples are using the static `defaultTransform` static function
+found inside the parser class. If you want to customize the parser
+configuration, you can also instantiate it directly and change some
+configuration variables:
+
+ use Michelf\MarkdownExtra;
+ $parser = new MarkdownExtra;
+ $parser->fn_id_prefix = "post22-";
+ $my_html = $parser->transform($my_text);
+
+To learn more, see the full list of [configuration variables].
+
+ [enable autoloading]: https://getcomposer.org/doc/01-basic-usage.md#autoloading
+ [PHP SmartyPants]: https://michelf.ca/projects/php-smartypants/
+ [configuration variables]: https://michelf.ca/projects/php-markdown/configuration/
+
+
+### Usage without an autoloader
+
+If you cannot use class autoloading, you can still use `include` or `require`
+to access the parser. To load the `Michelf\Markdown` parser, do it this way:
+
+ require_once 'Michelf/Markdown.inc.php';
+
+Or, if you need the `Michelf\MarkdownExtra` parser:
+
+ require_once 'Michelf/MarkdownExtra.inc.php';
+
+While the plain `.php` files depend on autoloading to work correctly, using the
+`.inc.php` files instead will eagerly load the dependencies that would be
+loaded on demand if you were using autoloading.
+
+
+Public API and Versioning Policy
+---------------------------------
+
+Version numbers are of the form *major*.*minor*.*patch*.
+
+The public API of PHP Markdown consist of the two parser classes `Markdown`
+and `MarkdownExtra`, their constructors, the `transform` and `defaultTransform`
+functions and their configuration variables. The public API is stable for
+a given major version number. It might get additions when the minor version
+number increments.
+
+**Protected members are not considered public API.** This is unconventional
+and deserves an explanation. Incrementing the major version number every time
+the underlying implementation of something changes is going to give
+nonessential version numbers for the vast majority of people who just use the
+parser. Protected members are meant to create parser subclasses that behave in
+different ways. Very few people create parser subclasses. I don't want to
+discourage it by making everything private, but at the same time I can't
+guarantee any stable hook between versions if you use protected members.
+
+**Syntax changes** will increment the minor number for new features, and the
+patch number for small corrections. A *new feature* is something that needs a
+change in the syntax documentation. Note that since PHP Markdown Lib includes
+two parsers, a syntax change for either of them will increment the minor
+number. Also note that there is nothing perfectly backward-compatible with the
+Markdown syntax: all inputs are always valid, so new features always replace
+something that was previously legal, although generally nonsensical to do.
+
+
+Bugs
+----
+
+To file bug reports please send email to:
+
+
+Please include with your report: (1) the example input; (2) the output you
+expected; (3) the output PHP Markdown actually produced.
+
+If you have a problem where Markdown gives you an empty result, first check
+that the backtrack limit is not too low by running `php --info | grep pcre`.
+See Installation and Requirement above for details.
+
+
+Development and Testing
+-----------------------
+
+Pull requests for fixing bugs are welcome. Proposed new features are
+going to be meticulously reviewed -- taking into account backward compatibility,
+potential side effects, and future extensibility -- before deciding on
+acceptance or rejection.
+
+If you make a pull request that includes changes to the parser please add
+tests for what is being changed to the `test/` directory. This can be as
+simple as adding a `.text` (input) file with a corresponding `.xhtml`
+(output) file to proper category under `./test/resources/`.
+
+Traditionally tests were in a separate repository, [MDTest](https://github.com/michelf/mdtest)
+but they are now located here, alongside the source code.
+
+
+Donations
+---------
+
+If you wish to make a donation that will help me devote more time to
+PHP Markdown, please visit [michelf.ca/donate].
+
+ [michelf.ca/donate]: https://michelf.ca/donate/#!Thanks%20for%20PHP%20Markdown
+
+
+Version History
+---------------
+
+PHP Markdown Lib 1.9.0 (1 Dec 2019)
+
+* Added `fn_backlink_label` configuration variable to put some text in the
+ `aria-label` attribute.
+ (Thanks to Sunny Walker for the implementation.)
+
+* Occurances of "`^^`" in `fn_backlink_html`, `fn_backlink_class`,
+ `fn_backlink_title`, and `fn_backlink_label` will be replaced by the
+ corresponding footnote number in the HTML output. Occurances of "`%%`" will be
+ replaced by a number for the reference (footnotes can have multiple references).
+ (Thanks to Sunny Walker for the implementation.)
+
+* Added configuration variable `omit_footnotes`. When `true` footnotes are not
+ appended at the end of the generated HTML and the `footnotes_assembled`
+ variable will contain the HTML for the footnote list, allowing footnotes to be
+ moved somewhere else on the page.
+ (Thanks to James K. for the implementation.)
+
+ Note: when placing the content of `footnotes_assembled` on the page, consider
+ adding the attribute `role="doc-endnotes"` to the `
` or `` that will
+ enclose the list of footnotes so they are reachable to accessibility tools the
+ same way they would be with the default HTML output.
+
+* Fixed deprecation warnings from PHP about usage of curly braces to access
+ characters in text strings.
+ (Thanks to Remi Collet and Frans-Willem Post.)
+
+
+PHP Markdown Lib 1.8.0 (14 Jan 2018)
+
+* Autoloading with Composer now uses PSR-4.
+
+* HTML output for Markdown Extra footnotes now include `role` attributes
+ with values from [WAI-ARIA](https://www.w3.org/TR/dpub-aria/) to
+ make them more accessible.
+ (Thanks to Tobias Bengfort)
+
+* In Markdown Extra, added the `hashtag_protection` configuration variable.
+ When set to `true` it prevents ATX-style headers with no space after the initial
+ hash from being interpreted as headers. This way your precious hashtags
+ are preserved.
+ (Thanks to Jaussoin Timothée for the implementation.)
+
+
+PHP Markdown Lib 1.7.0 (29 Oct 2016)
+
+* Added a `hard_wrap` configuration variable to make all newline characters
+ in the text become ` ` tags in the HTML output. By default, according
+ to the standard Markdown syntax these newlines are ignored unless they a
+ preceded by two spaces. Thanks to Jonathan Cohlmeyer for the implementation.
+
+* Improved the parsing of list items to fix problematic cases that came to
+ light with the addition of `hard_wrap`. This should have no effect on the
+ output except span-level list items that ended with two spaces (and thus
+ ended with a line break).
+
+* Added a `code_span_content_func` configuration variable which takes a
+ function that will convert the content of the code span to HTML. This can
+ be useful to implement syntax highlighting. Although contrary to its
+ code block equivalent, there is no syntax for specifying a language.
+ Credits to styxit for the implementation.
+
+* Fixed a Markdown Extra issue where two-space-at-end-of-line hard breaks
+ wouldn't work inside of HTML block elements such as `
`
+ where the element expects only span-level content.
+
+* In the parser code, switched to PHPDoc comment format. Thanks to
+ Robbie Averill for the help.
+
+
+PHP Markdown Lib 1.6.0 (23 Dec 2015)
+
+Note: this version was incorrectly released as 1.5.1 on Dec 22, a number
+that contradicted the versioning policy.
+
+* For fenced code blocks in Markdown Extra, can now set a class name for the
+ code block's language before the special attribute block. Previously, this
+ class name was only allowed in the absence of the special attribute block.
+
+* Added a `code_block_content_func` configuration variable which takes a
+ function that will convert the content of the code block to HTML. This is
+ most useful for syntax highlighting. For fenced code blocks in Markdown
+ Extra, the function has access to the language class name (the one outside
+ of the special attribute block). Credits to Mario Konrad for providing the
+ implementation.
+
+* The curled arrow character for the backlink in footnotes is now followed
+ by a Unicode variant selector to prevent it from being displayed in emoji
+ form on iOS.
+
+ Note that in older browsers the variant selector is often interpreted as a
+ separate character, making it visible after the arrow. So there is now a
+ also a `fn_backlink_html` configuration variable that can be used to set
+ the link text to something else. Credits to Dana for providing the
+ implementation.
+
+* Fixed an issue in MarkdownExtra where long header lines followed by a
+ special attribute block would hit the backtrack limit an cause an empty
+ string to be returned.
+
+
+PHP Markdown Lib 1.5.0 (1 Mar 2015)
+
+* Added the ability start ordered lists with a number different from 1 and
+ and have that reflected in the HTML output. This can be enabled with
+ the `enhanced_ordered_lists` configuration variable for the Markdown
+ parser; it is enabled by default for Markdown Extra.
+ Credits to Matt Gorle for providing the implementation.
+
+* Added the ability to insert custom HTML attributes with simple values
+ everywhere an extra attribute block is allowed (links, images, headers).
+ The value must be unquoted, cannot contains spaces and is limited to
+ alphanumeric ASCII characters.
+ Credits to Peter Droogmans for providing the implementation.
+
+* Added a `header_id_func` configuration variable which takes a function
+ that can generate an `id` attribute value from the header text.
+ Credits to Evert Pot for providing the implementation.
+
+* Added a `url_filter_func` configuration variable which takes a function
+ that can rewrite any link or image URL to something different.
+
+
+PHP Markdown Lib 1.4.1 (4 May 2014)
+
+* The HTML block parser will now treat `` as a block-level element
+ (as it should) and no longer wrap it in `
` or parse it's content with
+ the as Markdown syntax (although with Extra you can use `markdown="1"`
+ if you wish to use the Markdown syntax inside it).
+
+* The content of `