silverstripe-docsviewer/code/DocumentationManifest.php
2014-09-15 22:12:31 +12:00

568 lines
12 KiB
PHP

<?php
/**
* A class which builds a manifest of all documentation present in a project.
*
* The manifest is required to map the provided documentation URL rules to a
* file path on the server. The stored cache looks similar to the following:
*
* <code>
* array(
* 'en/someniceurl/' => array(
* 'filepath' => '/path/to/docs/en/SomeniceFile.md',
* 'title' => 'Some nice URL',
* 'summary' => 'Summary Text',
* 'basename' => 'SomeniceFile.md',
* 'type' => 'DocumentationPage'
* )
* )
* </code>
*
* URL format is in the following structures:
*
* {lang}/{path}
* {lang}/{module}/{path}
* {lang}/{module}/{version}/{/path}
*
* @package framework
* @subpackage manifest
*/
class DocumentationManifest {
/**
* @config
*
* @var boolean $automatic_registration
*/
private static $automatic_registration = true;
/**
* @config
*
* @var array $registered_entities
*/
private static $register_entities = array();
protected $cache;
protected $cacheKey;
protected $inited;
protected $forceRegen;
/**
* @var array $pages
*/
protected $pages = array();
/**
* @var DocumentationEntity
*/
private $entity;
/**
* @var array
*/
private $registeredEntities = array();
/**
* Constructs a new template manifest. The manifest is not actually built
* or loaded from cache until needed.
*
* @param bool $includeTests Include tests in the manifest.
* @param bool $forceRegen Force the manifest to be regenerated.
*/
public function __construct($forceRegen = false) {
$this->cacheKey = 'manifest';
$this->forceRegen = $forceRegen;
$this->cache = SS_Cache::factory('DocumentationManifest', 'Core', array(
'automatic_serialization' => true,
'lifetime' => null
));
$this->setupEntities();
}
/**
* Sets up the top level entities.
*
* Either manually registered through the YAML syntax or automatically
* loaded through investigating the file system for `docs` folder.
*/
public function setupEntities() {
if(Config::inst()->get('DocumentationManifest', 'automatic_registration')) {
$this->populateEntitiesFromInstall();
}
$registered = Config::inst()->get('DocumentationManifest', 'register_entities');
foreach($registered as $details) {
// validate the details provided through the YAML configuration
$required = array('Path', 'Title');
foreach($required as $require) {
if(!isset($details[$require])) {
throw new Exception("$require is a required key in DocumentationManifest.register_entities");
}
}
// if path is not an absolute value then assume it is relative from
// the BASE_PATH.
$path = $this->getRealPath($details['Path']);
$key = (isset($details['Key'])) ? $details['Key'] : $details['Title'];
if(!is_dir($path)) {
throw new Exception($path . ' is not a valid documentation directory');
}
$version = (isset($details['Version'])) ? $details['Version'] : '';
$langs = scandir($path);
if($langs) {
$possible = i18n::get_common_languages(true);
foreach($langs as $k => $lang) {
if(isset($possible[$lang])) {
$entity = Injector::inst()->create(
'DocumentationEntity', $key
);
$entity->setPath(Controller::join_links($path, $lang, '/'));
$entity->setTitle($details['Title']);
$entity->setLanguage($lang);
$entity->setVersion($version);
if(isset($details['Stable'])) {
$entity->setIsStable($details['Stable']);
}
if(isset($details['DefaultEntity'])) {
$entity->setIsDefaultEntity($details['DefaultEntity']);
}
$this->registeredEntities[] = $entity;
}
}
}
}
}
public function getRealPath($path) {
if(substr($path, 0, 1) != '/') {
$path = realpath(Controller::join_links(BASE_PATH, $path));
}
return $path;
}
/**
* @return array
*/
public function getEntities() {
return $this->registeredEntities;
}
/**
* Scans the current installation and picks up all the SilverStripe modules
* that contain a `docs` folder.
*
* @return void
*/
public function populateEntitiesFromInstall() {
$entities = array();
foreach(scandir(BASE_PATH) as $key => $entity) {
if($key == "themes") {
continue;
}
$dir = is_dir(Controller::join_links(BASE_PATH, $entity));
if($dir) {
// check to see if it has docs
$docs = Controller::join_links($dir, 'docs');
if(is_dir($docs)) {
$entities[] = array(
'BasePath' => $entity,
'Folder' => $key,
'Version' => 'master',
'Stable' => true
);
}
}
}
Config::inst()->update(
'DocumentationManifest', 'registered_entities', $entities
);
}
/**
*
*/
protected function init() {
if (!$this->forceRegen && $data = $this->cache->load($this->cacheKey)) {
$this->pages = $data;
$this->inited = true;
} else {
$this->regenerate();
}
}
/**
* Returns a map of all documentation pages.
*
* @return array
*/
public function getPages() {
if (!$this->inited) {
$this->init();
}
return $this->pages;
}
/**
* Returns a particular page for the requested URL.
*
* @return DocumentationPage
*/
public function getPage($url) {
$pages = $this->getPages();
$url = $this->normalizeUrl($url);
if(!isset($pages[$url])) {
return null;
}
$record = $pages[$url];
foreach($this->getEntities() as $entity) {
if(strpos($record['filepath'], $entity->getPath()) !== false) {
$page = Injector::inst()->create(
$record['type'],
$entity,
$record['basename'],
$record['filepath']
);
return $page;
}
}
}
/**
* Regenerates the manifest by scanning the base path.
*
* @param bool $cache
*/
public function regenerate($cache = true) {
$finder = new DocumentationManifestFileFinder();
$finder->setOptions(array(
'dir_callback' => array($this, 'handleFolder'),
'file_callback' => array($this, 'handleFile')
));
foreach($this->getEntities() as $entity) {
$this->entity = $entity;
$this->handleFolder('', $this->entity->getPath(), 0);
$finder->find($this->entity->getPath());
}
if ($cache) {
$this->cache->save($this->pages, $this->cacheKey);
}
$this->inited = true;
}
/**
*
*/
public function handleFolder($basename, $path, $depth) {
$folder = Injector::inst()->create(
'DocumentationFolder', $this->entity, $basename, $path
);
$link = ltrim(str_replace(
Config::inst()->get('DocumentationViewer', 'link_base'),
'',
$folder->Link()
), '/');
$this->pages[$link] = array(
'title' => $folder->getTitle(),
'basename' => $basename,
'filepath' => $path,
'type' => 'DocumentationFolder'
);
}
/**
* Individual files can optionally provide a nice title and a better URL
* through the use of markdown meta data. This creates a new
* {@link DocumentationPage} instance for the file.
*
* If the markdown does not specify the title in the meta data it falls back
* to using the file name.
*
* @param string $basename
* @param string $path
* @param int $depth
*/
public function handleFile($basename, $path, $depth) {
$page = Injector::inst()->create(
'DocumentationPage',
$this->entity, $basename, $path
);
// populate any meta data
$page->getMarkdown();
$link = ltrim(str_replace(
Config::inst()->get('DocumentationViewer', 'link_base'),
'',
$page->Link()
), '/');
$this->pages[$link] = array(
'title' => $page->getTitle(),
'filepath' => $path,
'basename' => $basename,
'type' => 'DocumentationPage',
'summary' => $page->getSummary()
);
}
/**
* Generate an {@link ArrayList} of the pages to the given page.
*
* @param DocumentationPage
* @param DocumentationEntityLanguage
*
* @return ArrayList
*/
public function generateBreadcrumbs($record, $base) {
$output = new ArrayList();
$parts = explode('/', trim($record->getRelativeLink(), '/'));
// the first part of the URL should be the language, so shift that off
// so we just have the core pages.
array_shift($parts);
// Add the base link.
$output->push(new ArrayData(array(
'Link' => $base->Link(),
'Title' => $base->Title
)));
$progress = $base->Link();
foreach($parts as $part) {
if($part) {
$progress = Controller::join_links($progress, $part, '/');
$output->push(new ArrayData(array(
'Link' => $progress,
'Title' => DocumentationHelper::clean_page_name($part)
)));
}
}
return $output;
}
/**
* Determine the next page from the given page.
*
* Relies on the fact when the manifest was built, it was generated in
* order.
*
* @param string
*
* @return ArrayData
*/
public function getNextPage($filepath) {
$grabNext = false;
foreach($this->getPages() as $url => $page) {
if($grabNext) {
return new ArrayData(array(
'Link' => $url,
'Title' => $page['title']
));
}
if($filepath == $page['filepath']) {
$grabNext = true;
}
}
return null;
}
/**
* Determine the previous page from the given page.
*
* Relies on the fact when the manifest was built, it was generated in
* order.
*
* @param string
*
* @return ArrayData
*/
public function getPreviousPage($filepath) {
$previousUrl = $previousPage = null;
foreach($this->getPages() as $url => $page) {
if($filepath == $page['filepath']) {
if($previousUrl) {
return new ArrayData(array(
'Link' => $previousUrl,
'Title' => $previousPage['title']
));
}
}
$previousUrl = $url;
$previousPage = $page;
}
return null;
}
/**
* @param string
*
* @return string
*/
public function normalizeUrl($url) {
return trim($url, '/') .'/';
}
/**
* Return the children of the provided record path.
*
* Looks for any pages in the manifest which have one more slash attached.
*
* @param string $path
*
* @return ArrayList
*/
public function getChildrenFor($path, $recursive = true) {
$output = new ArrayList();
$base = Config::inst()->get('DocumentationViewer', 'link_base');
$path = $this->normalizeUrl($path);
$depth = substr_count($path, '/');
foreach($this->getPages() as $url => $page) {
$pagePath = $this->normalizeUrl($page['filepath']);
// check to see if this page is under the given path
if(strpos($pagePath, $path) === false) {
continue;
}
// if the page is the index page then hide it from the menu
if(strpos(strtolower($pagePath), '/index.md/')) {
continue;
}
// only pull it up if it's one more level depth
if(substr_count($pagePath, DIRECTORY_SEPARATOR) == ($depth + 1)) {
// found a child
$mode = ($pagePath == $path) ? 'current' : 'link';
$children = new ArrayList();
if($mode == 'current' && $recursive) {
// $children = $this->getChildrenFor($url, false);
}
$output->push(new ArrayData(array(
'Link' => Controller::join_links($base, $url, '/'),
'Title' => $page['title'],
'LinkingMode' => $mode,
'Children' => $children
)));
}
}
return $output;
}
/**
* @param DocumentationEntity
*
* @return ArrayList
*/
public function getAllVersions(DocumentationEntity $entity) {
$all = new ArrayList();
foreach($this->getEntities() as $check) {
if($check->getKey() == $entity->getKey()) {
if($check->getLanguage() == $entity->getLanguage()) {
$all->push($check);
}
}
}
return $all;
}
/**
* @param DocumentationEntity
*
* @return DocumentationEntity
*/
public function getStableVersion(DocumentationEntity $entity) {
foreach($this->getEntities() as $check) {
if($check->getKey() == $entity->getKey()) {
if($check->getLanguage() == $entity->getLanguage()) {
if($check->getIsStable()) {
return $check;
}
}
}
}
return $entity;
}
/**
* @param DocumentationEntity
*
* @return ArrayList
*/
public function getVersions($entity) {
if(!$entity) {
return null;
}
$output = new ArrayList();
foreach($this->getEntities() as $check) {
if($check->getKey() == $entity->getKey()) {
if($check->getLanguage() == $entity->getLanguage()) {
$same = ($check->getVersion() == $entity->getVersion());
$output->push(new ArrayList(array(
'Title' => $entity->getTitle(),
'Link' => $entity->getLink(),
'LinkingMode' => ($same) ? 'current' : 'link'
)));
}
}
}
return $output;
}
}