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Automatic id="" attribute generation.

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Evert Pot 2015-02-26 14:58:43 -05:00
parent 1b5a30e139
commit c7f15db5f0
1 changed files with 31 additions and 7 deletions
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38
Michelf/Markdown.php
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@ -62,6 +62,8 @@ class Markdown implements MarkdownInterface {
# Optional filter function for URLs
public $url_filter_func = null;
# Optional header id="" generation callback function.
public $header_id_func = null;
### Parser Implementation ###
@ -773,18 +775,29 @@ class Markdown implements MarkdownInterface {
return $text;
}
protected function _doHeaders_callback_setext($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;
$block = "<h$level>".$this->runSpanGamut($matches[1])."</h$level>";
# id attribute generation
$idAtt = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[1]) : null;
if ($idAtt) $idAtt = ' id="' . htmlspecialchars($idAtt, ENT_QUOTES, 'UTF-8') . '"';
$block = "<h$level$idAtt>".$this->runSpanGamut($matches[2])."</h$level>";
return "\n" . $this->hashBlock($block) . "\n\n";
}
protected function _doHeaders_callback_atx($matches) {
protected function _doHeaders_callback_atx($matches) {
# id attribute generation
$idAtt = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[2]) : null;
if ($idAtt) $idAtt = ' id="' . htmlspecialchars($idAtt, ENT_QUOTES, 'UTF-8') . '"';
$level = strlen($matches[1]);
$block = "<h$level>".$this->runSpanGamut($matches[2])."</h$level>";
$block = "<h$level$idAtt>".$this->runSpanGamut($matches[2])."</h$level>";
return "\n" . $this->hashBlock($block) . "\n\n";
}
@ -1682,14 +1695,17 @@ abstract class _MarkdownExtra_TmpImpl extends \Michelf\Markdown {
# Expression to use when parsing in a context when no capture is desired
protected $id_class_attr_nocatch_re = '\{(?:[ ]*[#.a-z][-_:a-zA-Z0-9=]+){1,}[ ]*\}';
protected function doExtraAttributes($tag_name, $attr) {
protected function doExtraAttributes($tag_name, $attr, $defaultIdValue = null) {
#
# Parse attributes caught by the $this->id_class_attr_catch_re expression
# and return the HTML-formatted list of attributes.
#
# Currently supported attributes are .class and #id.
#
if (empty($attr)) return "";
# 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.
if (empty($attr) && !$defaultIdValue) return "";
# Split on components
preg_match_all('/[#.a-z][-_:a-zA-Z0-9=]+/', $attr, $matches);
@ -1710,6 +1726,8 @@ abstract class _MarkdownExtra_TmpImpl extends \Michelf\Markdown {
}
}
if (!$id) $id = $defaultIdValue;
# compose attributes as string
$attr_str = "";
if (!empty($id)) {
@ -2529,14 +2547,20 @@ abstract class _MarkdownExtra_TmpImpl extends \Michelf\Markdown {
protected function _doHeaders_callback_setext($matches) {
if ($matches[3] == '-' && preg_match('{^- }', $matches[1]))
return $matches[0];
$level = $matches[3]{0} == '=' ? 1 : 2;
$attr = $this->doExtraAttributes("h$level", $dummy =& $matches[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);
$block = "<h$level$attr>".$this->runSpanGamut($matches[1])."</h$level>";
return "\n" . $this->hashBlock($block) . "\n\n";
}
protected function _doHeaders_callback_atx($matches) {
$level = strlen($matches[1]);
$attr = $this->doExtraAttributes("h$level", $dummy =& $matches[3]);
$defaultId = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[2]) : null;
$attr = $this->doExtraAttributes("h$level", $dummy =& $matches[3], $defaultId);
$block = "<h$level$attr>".$this->runSpanGamut($matches[2])."</h$level>";
return "\n" . $this->hashBlock($block) . "\n\n";
}