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<?php
/**
* Plugin Markdown.
*
* Shaare's descriptions are parsed with Markdown.
*/
require_once 'Parsedown.php';
/**
* Parse linklist descriptions.
*
* @param array $data linklist data.
*
* @return mixed linklist data parsed in markdown (and converted to HTML).
*/
function hook_markdown_render_linklist($data)
{
foreach ($data['links'] as &$value) {
$value['description'] = process_markdown($value['description']);
}
return $data;
}
/**
* Parse daily descriptions.
*
* @param array $data daily data.
*
* @return mixed daily data parsed in markdown (and converted to HTML).
*/
function hook_markdown_render_daily($data)
{
// Manipulate columns data
foreach ($data['cols'] as &$value) {
foreach ($value as &$value2) {
$value2['formatedDescription'] = process_markdown($value2['formatedDescription']);
}
}
return $data;
}
/**
* When link list is displayed, include markdown CSS.
*
* @param array $data includes data.
*
* @return mixed - includes data with markdown CSS file added.
*/
function hook_markdown_render_includes($data)
{
if ($data['_PAGE_'] == Router::$PAGE_LINKLIST
|| $data['_PAGE_'] == Router::$PAGE_DAILY
|| $data['_PAGE_'] == Router::$PAGE_EDITLINK
) {
$data['css_files'][] = PluginManager::$PLUGINS_PATH . '/markdown/markdown.css';
}
return $data;
}
/**
* Hook render_editlink.
* Adds an help link to markdown syntax.
*
* @param array $data data passed to plugin
*
* @return array altered $data.
*/
function hook_markdown_render_editlink($data)
{
// Load help HTML into a string
$data['edit_link_plugin'][] = file_get_contents(PluginManager::$PLUGINS_PATH .'/markdown/help.html');
return $data;
}
/**
* Remove HTML links auto generated by Shaarli core system.
* Keeps HREF attributes.
*
* @param string $description input description text.
*
* @return string $description without HTML links.
*/
function reverse_text2clickable($description)
{
return preg_replace('!<a +href="([^ ]*)">[^ ]+</a>!m', '$1', $description);
}
/**
* Remove <br> tag to let markdown handle it.
*
* @param string $description input description text.
*
* @return string $description without <br> tags.
*/
function reverse_nl2br($description)
{
return preg_replace('!<br */?>!im', '', $description);
}
/**
* Remove HTML spaces ' ' auto generated by Shaarli core system.
*
* @param string $description input description text.
*
* @return string $description without HTML links.
*/
function reverse_space2nbsp($description)
{
return preg_replace('/(^| ) /m', '$1 ', $description);
}
/**
* Remove '>' at start of line auto generated by Shaarli core system
* to allow markdown blockquotes.
*
* @param string $description input description text.
*
* @return string $description without HTML links.
*/
function reset_quote_tags($description)
{
return preg_replace('/^( *)> /m', '$1> ', $description);
}
/**
* Render shaare contents through Markdown parser.
* 1. Remove HTML generated by Shaarli core.
* 2. Generate markdown descriptions.
* 3. Wrap description in 'markdown' CSS class.
*
* @param string $description input description text.
*
* @return string HTML processed $description.
*/
function process_markdown($description)
{
$parsedown = new Parsedown();
$processedDescription = $description;
$processedDescription = reverse_text2clickable($processedDescription);
$processedDescription = reverse_nl2br($processedDescription);
$processedDescription = reverse_space2nbsp($processedDescription);
$processedDescription = reset_quote_tags($processedDescription);
$processedDescription = $parsedown
->setMarkupEscaped(false)
->setBreaksEnabled(true)
->text($processedDescription);
$processedDescription = '<div class="markdown">'. $processedDescription . '</div>';
return $processedDescription;
}
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