silverstripe-framework/core/manifest/TemplateManifest.php

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<?php
/**
* A class which builds a manifest of all templates present in a directory,
* in both modules and themes.
*
* @package framework
* @subpackage manifest
*/
class SS_TemplateManifest {
const TEMPLATES_DIR = 'templates';
protected $base;
protected $tests;
protected $cache;
protected $cacheKey;
protected $project;
protected $inited;
protected $forceRegen;
protected $templates = array();
/**
* Constructs a new template manifest. The manifest is not actually built
* or loaded from cache until needed.
*
* @param string $base The base path.
* @param string $project Path to application code
*
* @param bool $includeTests Include tests in the manifest.
* @param bool $forceRegen Force the manifest to be regenerated.
*/
public function __construct($base, $project, $includeTests = false, $forceRegen = false) {
$this->base = $base;
$this->tests = $includeTests;
$this->project = $project;
$this->cacheKey = $this->tests ? 'manifest_tests' : 'manifest';
$this->forceRegen = $forceRegen;
$this->cache = SS_Cache::factory('SS_TemplateManifest', 'Core', array(
'automatic_serialization' => true,
'lifetime' => null
));
}
/**
* Returns a map of all template information. The map is in the following
* format:
*
* <code>
* array(
* 'moduletemplate' => array(
* 'main' => '/path/to/module/templates/Main.ss'
* ),
* 'include' => array(
* 'include' => '/path/to/module/templates/Includes/Include.ss'
* ),
* 'page' => array(
* 'themes' => array(
* 'simple' => array(
* 'main' => '/path/to/theme/Page.ss'
* 'Layout' => '/path/to/theme/Layout/Page.ss'
* )
* )
* )
* )
* </code>
*
* @return array
*/
public function getTemplates() {
if (!$this->inited) {
$this->init();
}
return $this->templates;
}
/**
* Returns a set of possible candidate templates that match a certain
* template name.
*
* This is the same as extracting an individual array element from
* {@link SS_TemplateManifest::getTemplates()}.
*
* @param string $name
* @return array
*/
public function getTemplate($name) {
if (!$this->inited) {
$this->init();
}
$name = strtolower($name);
if (array_key_exists($name, $this->templates)) {
return $this->templates[$name];
} else {
return array();
}
}
/**
* Returns the correct candidate template. In order of importance, application
* project code, current theme and finally modules.
*
* @param string $name
* @param string $theme - theme name
*
* @return array
*/
public function getCandidateTemplate($name, $theme = null) {
$candidates = $this->getTemplate($name);
if ($this->project && isset($candidates[$this->project])) {
$found = $candidates[$this->project];
} else if ($theme && isset($candidates['themes'][$theme])) {
$found = $candidates['themes'][$theme];
} else {
unset($candidates['themes']);
$found = $candidates;
}
return $found;
}
/**
* Regenerates the manifest by scanning the base path.
*
* @param bool $cache
*/
public function regenerate($cache = true) {
$finder = new ManifestFileFinder();
$finder->setOptions(array(
'name_regex' => '/\.ss$/',
'include_themes' => true,
'ignore_tests' => !$this->tests,
'file_callback' => array($this, 'handleFile')
));
$finder->find($this->base);
if ($cache) {
$this->cache->save($this->templates, $this->cacheKey);
}
$this->inited = true;
}
public function handleFile($basename, $pathname, $depth) {
$projectFile = false;
$theme = null;
if (strpos($pathname, $this->base . '/' . THEMES_DIR) === 0) {
$start = strlen($this->base . '/' . THEMES_DIR) + 1;
$theme = substr($pathname, $start);
$theme = substr($theme, 0, strpos($theme, '/'));
$theme = strtok($theme, '_');
} else if($this->project && (strpos($pathname, $this->base . '/' . $this->project .'/') === 0)) {
$projectFile = true;
}
$type = basename(dirname($pathname));
$name = strtolower(substr($basename, 0, -3));
if ($type == self::TEMPLATES_DIR) {
$type = 'main';
}
if ($theme) {
$this->templates[$name]['themes'][$theme][$type] = $pathname;
} else if($projectFile) {
$this->templates[$name][$this->project][$type] = $pathname;
} else {
$this->templates[$name][$type] = $pathname;
}
}
protected function init() {
if (!$this->forceRegen && $data = $this->cache->load($this->cacheKey)) {
$this->templates = $data;
$this->inited = true;
} else {
$this->regenerate();
}
}
}