mirror of
https://github.com/silverstripe/doc.silverstripe.org
synced 2024-10-22 17:05:50 +02:00
ec0e4a4b96
git-svn-id: http://svn.silverstripe.com/projects/ss2doc/branches/v2@116279 467b73ca-7a2a-4603-9d3b-597d59a354a9
333 lines
8.8 KiB
PHP
333 lines
8.8 KiB
PHP
<?php
|
|
/**
|
|
* Parser wrapping the Markdown Extra parser (see http://michelf.com/projects/php-markdown/extra/).
|
|
*
|
|
* @package sapphiredocs
|
|
*/
|
|
class DocumentationParser {
|
|
|
|
/**
|
|
* @var String Rewriting of api links in the format "[api:MyClass]" or "[api:MyClass::$my_property]".
|
|
*/
|
|
static $api_link_base = 'http://api.silverstripe.org/search/lookup/?q=%s&version=%s&module=%s';
|
|
|
|
static $heading_counts = array();
|
|
|
|
/**
|
|
* Parse a given path to the documentation for a file. Performs a case insensitive
|
|
* lookup on the file system. Automatically appends the file extension to one of the markdown
|
|
* extensions as well so /install/ in a web browser will match /install.md or /INSTALL.md
|
|
*
|
|
* Filepath: /var/www/myproject/src/cms/en/folder/subfolder/page.md
|
|
* URL: http://myhost/mywebroot/dev/docs/2.4/cms/en/folder/subfolder/page
|
|
* Webroot: http://myhost/mywebroot/
|
|
* Baselink: dev/docs/2.4/cms/en/
|
|
* Pathparts: folder/subfolder/page
|
|
*
|
|
* @param DocumentationPage $page
|
|
* @param String $baselink Link relative to webroot, up until the "root" of the module.
|
|
* Necessary to rewrite relative links
|
|
*
|
|
* @return String
|
|
*/
|
|
public static function parse(DocumentationPage $page, $baselink = null) {
|
|
if(!$page || (!$page instanceof DocumentationPage)) return false;
|
|
|
|
$md = $page->getMarkdown();
|
|
|
|
// Pre-processing
|
|
$md = self::rewrite_image_links($md, $page);
|
|
$md = self::rewrite_relative_links($md, $page, $baselink);
|
|
|
|
$md = self::rewrite_api_links($md, $page);
|
|
$md = self::rewrite_heading_anchors($md, $page);
|
|
$md = self::rewrite_code_blocks($md, $page);
|
|
|
|
require_once(BASE_PATH . '/sapphiredocs/thirdparty/markdown/markdown.php');
|
|
$html = Markdown($md);
|
|
|
|
return $html;
|
|
}
|
|
|
|
function rewrite_code_blocks($md) {
|
|
$started = false;
|
|
$inner = false;
|
|
|
|
$lines = split("\n", $md);
|
|
foreach($lines as $i => $line) {
|
|
if(!$started && preg_match('/^\t*:::\s*(.*)/', $line, $matches)) {
|
|
// first line with custom formatting
|
|
$started = true;
|
|
$lines[$i] = sprintf('<pre class="brush: %s">', $matches[1]);
|
|
} elseif(preg_match('/^\t(.*)/', $line, $matches)) {
|
|
// inner line of ::: block, or first line of standard markdown code block
|
|
// regex removes first tab (any following tabs are part of the code).
|
|
$lines[$i] = ($started) ? '' : '<pre>' . "\n";
|
|
$lines[$i] .= htmlentities($matches[1], ENT_COMPAT, 'UTF-8');
|
|
$inner = true;
|
|
$started = true;
|
|
} elseif($started && $inner) {
|
|
// remove any previous blank lines
|
|
$j = $i-1;
|
|
while(isset($lines[$j]) && preg_match('/^[\t\s]*$/', $lines[$j])) {
|
|
unset($lines[$j]);
|
|
$j--;
|
|
}
|
|
|
|
// last line, close pre
|
|
$lines[$i] = '</pre>' . "\n\n" . $line;
|
|
|
|
// reset state
|
|
$started = $inner = false;
|
|
}
|
|
}
|
|
|
|
return join("\n", $lines);
|
|
|
|
}
|
|
|
|
static function rewrite_image_links($md, $page) {
|
|
// Links with titles
|
|
$re = '/
|
|
!
|
|
\[
|
|
(.*?) # image title (non greedy)
|
|
\]
|
|
\(
|
|
(.*?) # image url (non greedy)
|
|
\)
|
|
/x';
|
|
preg_match_all($re, $md, $images);
|
|
if($images) foreach($images[0] as $i => $match) {
|
|
$title = $images[1][$i];
|
|
$url = $images[2][$i];
|
|
|
|
// Don't process absolute links (based on protocol detection)
|
|
$urlParts = parse_url($url);
|
|
|
|
if($urlParts && isset($urlParts['scheme'])) continue;
|
|
|
|
// Rewrite URL (relative or absolute)
|
|
$baselink = Director::makeRelative(dirname($page->getPath()));
|
|
$relativeUrl = rtrim($baselink, '/') . '/' . ltrim($url, '/');
|
|
|
|
// Resolve relative paths
|
|
while(strpos($relativeUrl, '/..') !== FALSE) {
|
|
$relativeUrl = preg_replace('/\w+\/\.\.\//', '', $relativeUrl);
|
|
}
|
|
|
|
// Replace any double slashes (apart from protocol)
|
|
$relativeUrl = preg_replace('/([^:])\/{2,}/', '$1/', $relativeUrl);
|
|
|
|
// Make it absolute again
|
|
$absoluteUrl = Director::absoluteBaseURL() . $relativeUrl;
|
|
|
|
// Replace in original content
|
|
$md = str_replace(
|
|
$match,
|
|
sprintf('', $title, $absoluteUrl),
|
|
$md
|
|
);
|
|
}
|
|
|
|
return $md;
|
|
}
|
|
|
|
/**
|
|
* Rewrite links with special "api:" prefix, from two possible formats:
|
|
* 1. [api:DataObject]
|
|
* 2. (My Title)(api:DataObject)
|
|
*
|
|
* Hack: Replaces any backticks with "<code>" blocks,
|
|
* as the currently used markdown parser doesn't resolve links in backticks,
|
|
* but does resolve in "<code>" blocks.
|
|
*
|
|
* @param String $md
|
|
* @param DocumentationPage $page
|
|
* @return String
|
|
*/
|
|
static function rewrite_api_links($md, $page) {
|
|
// Links with titles
|
|
$re = '/
|
|
`?
|
|
\[
|
|
(.*?) # link title (non greedy)
|
|
\]
|
|
\(
|
|
api:(.*?) # link url (non greedy)
|
|
\)
|
|
`?
|
|
/x';
|
|
preg_match_all($re, $md, $linksWithTitles);
|
|
if($linksWithTitles) {
|
|
foreach($linksWithTitles[0] as $i => $match) {
|
|
$title = $linksWithTitles[1][$i];
|
|
$subject = $linksWithTitles[2][$i];
|
|
$url = sprintf(self::$api_link_base, $subject, $page->getVersion(), $page->getEntity()->getModuleFolder());
|
|
$md = str_replace(
|
|
$match,
|
|
sprintf('<code>[%s](%s)</code>', $title, $url),
|
|
$md
|
|
);
|
|
}
|
|
}
|
|
|
|
// Bare links
|
|
$re = '/
|
|
`?
|
|
\[
|
|
api:(.*?)
|
|
\]
|
|
`?
|
|
/x';
|
|
preg_match_all($re, $md, $links);
|
|
if($links) {
|
|
foreach($links[0] as $i => $match) {
|
|
$subject = $links[1][$i];
|
|
$url = sprintf(self::$api_link_base, $subject, $page->getVersion(), $page->getEntity()->getModuleFolder());
|
|
$md = str_replace(
|
|
$match,
|
|
sprintf('<code>[%s](%s)</code>', $subject, $url),
|
|
$md
|
|
);
|
|
}
|
|
}
|
|
|
|
return $md;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
static function rewrite_heading_anchors($md, $page) {
|
|
$re = '/^\#+(.*)/m';
|
|
$md = preg_replace_callback($re, array('DocumentationParser', '_rewrite_heading_anchors_callback'), $md);
|
|
|
|
return $md;
|
|
}
|
|
|
|
static function _rewrite_heading_anchors_callback($matches) {
|
|
$heading = $matches[0];
|
|
$headingText = $matches[1];
|
|
|
|
if(preg_match('/\{\#.*\}/', $headingText)) return $heading;
|
|
|
|
if(!isset(self::$heading_counts[$headingText])) {
|
|
self::$heading_counts[$headingText] = 1;
|
|
}
|
|
else {
|
|
self::$heading_counts[$headingText]++;
|
|
$headingText .= "-" . self::$heading_counts[$headingText];
|
|
}
|
|
|
|
return sprintf("%s {#%s}", preg_replace('/\n/', '', $heading), self::generate_html_id($headingText));
|
|
}
|
|
|
|
/**
|
|
* Generate an html element id from a string
|
|
*
|
|
* @return String
|
|
*/
|
|
static function generate_html_id($title) {
|
|
$t = $title;
|
|
$t = str_replace('&','-and-',$t);
|
|
$t = str_replace('&','-and-',$t);
|
|
$t = ereg_replace('[^A-Za-z0-9]+','-',$t);
|
|
$t = ereg_replace('-+','-',$t);
|
|
$t = trim($t, '-');
|
|
$t = strtolower($t);
|
|
|
|
return $t;
|
|
}
|
|
|
|
/**
|
|
* Resolves all relative links within markdown.
|
|
*
|
|
* @param String $md Markdown content
|
|
* @param DocumentationPage $page
|
|
* @param String $baselink
|
|
* @return String Markdown
|
|
*/
|
|
static function rewrite_relative_links($md, $page, $baselink = null) {
|
|
if(!$baselink) $baselink = $page->getEntity()->getRelativeLink();
|
|
|
|
$re = '/
|
|
([^\!]?) # exclude image format
|
|
\[
|
|
(.*?) # link title (non greedy)
|
|
\]
|
|
\(
|
|
(.*?) # link url (non greedy)
|
|
\)
|
|
/x';
|
|
preg_match_all($re, $md, $matches);
|
|
|
|
// relative path (relative to module base folder), without the filename.
|
|
// For "sapphire/en/current/topics/templates", this would be "templates"
|
|
$relativePath = dirname($page->getRelativePath());
|
|
if($relativePath == '.') $relativePath = '';
|
|
|
|
if($matches) {
|
|
foreach($matches[0] as $i => $match) {
|
|
$title = $matches[2][$i];
|
|
$url = $matches[3][$i];
|
|
|
|
// Don't process API links
|
|
if(preg_match('/^api:/', $url)) continue;
|
|
|
|
// Don't process absolute links (based on protocol detection)
|
|
$urlParts = parse_url($url);
|
|
if($urlParts && isset($urlParts['scheme'])) continue;
|
|
|
|
// Rewrite URL
|
|
if(preg_match('/^\//', $url)) {
|
|
// Absolute: Only path to module base
|
|
$relativeUrl = Controller::join_links($baselink, $url);
|
|
} else {
|
|
// Relative: Include path to module base and any folders
|
|
$relativeUrl = Controller::join_links($baselink, $relativePath, $url);
|
|
}
|
|
|
|
// Resolve relative paths
|
|
while(strpos($relativeUrl, '..') !== FALSE) {
|
|
$relativeUrl = preg_replace('/\w+\/\.\.\//', '', $relativeUrl);
|
|
}
|
|
|
|
// Replace any double slashes (apart from protocol)
|
|
$relativeUrl = preg_replace('/([^:])\/{2,}/', '$1/', $relativeUrl);
|
|
|
|
// Replace in original content
|
|
$md = str_replace(
|
|
$match,
|
|
sprintf('%s[%s](%s)', $matches[1][$i], $title, $relativeUrl),
|
|
$md
|
|
);
|
|
}
|
|
}
|
|
|
|
return $md;
|
|
}
|
|
|
|
/**
|
|
* Strips out the metadata for a page
|
|
*
|
|
* @param DocumentationPage
|
|
*/
|
|
public static function retrieve_meta_data(DocumentationPage &$page) {
|
|
if($md = $page->getMarkdown()) {
|
|
$matches = preg_match_all('/
|
|
(?<key>[A-Za-z0-9_-]+):
|
|
\s*
|
|
(?<value>.*)
|
|
/x', $md, $meta);
|
|
|
|
if($matches) {
|
|
foreach($meta['key'] as $index => $key) {
|
|
if(isset($meta['value'][$index])) {
|
|
$page->setMetaData($key, $meta['value'][$index]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} |