function Markdown($text)
{
#
# Main function. The order in which other subs are called here is
# essential. Link and image substitutions need to happen before
# _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the <a>
# and <img> tags get encoded.
#
# Clear the global hashes. If we don't clear these, you get conflicts
# from other articles when generating a page which contains more than
# one article (e.g. an index page that shows the N most recent
# articles):
global $md_urls, $md_titles, $md_html_blocks, $md_html_hashes;
$md_urls = array();
$md_titles = array();
$md_html_blocks = array();
$md_html_hashes = array();
# Standardize line endings:
# DOS to Unix and Mac to Unix
$text = str_replace(array("\r\n", "\r"), "\n", $text);
# Make sure $text ends with a couple of newlines:
$text .= "\n\n";
# Convert all tabs to spaces.
$text = _Detab($text);
# Turn block-level HTML blocks into hash entries
$text = _HashHTMLBlocks($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 /[ \t]*\n+/ .
$text = preg_replace('/^[ \\t]+$/m', '', $text);
# Strip link definitions, store in hashes.
$text = _StripLinkDefinitions($text);
$text = _RunBlockGamut($text, FALSE);
$text = _UnescapeSpecialChars($text);
return $text . "\n";
}
function _DoCodeBlocks_callback($matches)
{
$prevchar = $matches[1];
$newlines = $matches[2];
$codeblock = $matches[4];
$result;
# return value
$prefix = "";
if (!(preg_match('/\\s/', $prevchar) || $prevchar == "")) {
$prefix = "{$prevchar}:";
}
$codeblock = _EncodeCode(_Outdent($codeblock));
$codeblock = _Detab($codeblock);
# trim leading newlines and trailing whitespace
$codeblock = preg_replace(array('/\\A\\n+/', '/\\s+\\z/'), '', $codeblock);
$result = $prefix . "\n\n<pre><code>" . $codeblock . "\n</code></pre>\n\n";
return $result;
}
function _DoCodeBlocks_callback($matches)
{
$codeblock = $matches[1];
$codeblock = _EncodeCode(_Outdent($codeblock));
$codeblock = _Detab($codeblock);
# trim leading newlines and trailing whitespace
$codeblock = preg_replace(array('/\\A\\n+/', '/\\s+\\z/'), '', $codeblock);
$result = "\n\n<pre><code>" . $codeblock . "\n</code></pre>\n\n";
return $result;
}
