links. This is useful in Ajax applications.
* It returns the SSViewer objects, so that you can call new SSViewer("X")->dontRewriteHashlinks()->process();
*/
public function dontRewriteHashlinks() {
$this->rewriteHashlinks = false;
SSViewer::config()->update('rewrite_hash_links', false);
return $this;
}
public function exists() {
return $this->chosen;
}
/**
* @param string $identifier A template name without '.ss' extension or path
* @param string $type The template type, either "main", "Includes" or "Layout"
*
* @return string Full system path to a template file
*/
public static function getTemplateFileByType($identifier, $type = null) {
return ThemeResourceLoader::instance()->findTemplate(['type' => $type, $identifier], self::get_themes());
}
/**
* Clears all parsed template files in the cache folder.
*
* Can only be called once per request (there may be multiple SSViewer instances).
*
* @param bool $force Set this to true to force a re-flush. If left to false, flushing
* may only be performed once a request.
*/
public static function flush_template_cache($force = false) {
if (!self::$template_cache_flushed || $force) {
$dir = dir(TEMP_FOLDER);
while (false !== ($file = $dir->read())) {
if (strstr($file, '.cache')) unlink(TEMP_FOLDER . '/' . $file);
}
self::$template_cache_flushed = true;
}
}
/**
* Clears all partial cache blocks.
*
* Can only be called once per request (there may be multiple SSViewer instances).
*
* @param bool $force Set this to true to force a re-flush. If left to false, flushing
* may only be performed once a request.
*/
public static function flush_cacheblock_cache($force = false) {
if (!self::$cacheblock_cache_flushed || $force) {
$cache = Cache::factory('cacheblock');
$backend = $cache->getBackend();
if(
$backend instanceof Zend_Cache_Backend_ExtendedInterface
&& ($capabilities = $backend->getCapabilities())
&& $capabilities['tags']
) {
$cache->clean(Zend_Cache::CLEANING_MODE_MATCHING_TAG, $cache->getTags());
} else {
$cache->clean(Zend_Cache::CLEANING_MODE_ALL);
}
self::$cacheblock_cache_flushed = true;
}
}
/**
* @var Zend_Cache_Core
*/
protected $partialCacheStore = null;
/**
* Set the cache object to use when storing / retrieving partial cache blocks.
*
* @param Zend_Cache_Core $cache
*/
public function setPartialCacheStore($cache) {
$this->partialCacheStore = $cache;
}
/**
* Get the cache object to use when storing / retrieving partial cache blocks.
*
* @return Zend_Cache_Core
*/
public function getPartialCacheStore() {
return $this->partialCacheStore ? $this->partialCacheStore : Cache::factory('cacheblock');
}
/**
* Flag whether to include the requirements in this response.
*
* @param boolean
*/
public function includeRequirements($incl = true) {
$this->includeRequirements = $incl;
}
/**
* An internal utility function to set up variables in preparation for including a compiled
* template, then do the include
*
* Effectively this is the common code that both SSViewer#process and SSViewer_FromString#process call
*
* @param string $cacheFile The path to the file that contains the template compiled to PHP
* @param ViewableData $item The item to use as the root scope for the template
* @param array $overlay Any variables to layer on top of the scope
* @param array $underlay Any variables to layer underneath the scope
* @param ViewableData $inheritedScope The current scope of a parent template including a sub-template
* @return string The result of executing the template
*/
protected function includeGeneratedTemplate($cacheFile, $item, $overlay, $underlay, $inheritedScope = null) {
if(isset($_GET['showtemplate']) && $_GET['showtemplate'] && Permission::check('ADMIN')) {
$lines = file($cacheFile);
echo "Template: $cacheFile
";
echo "";
foreach($lines as $num => $line) {
echo str_pad($num+1,5) . htmlentities($line, ENT_COMPAT, 'UTF-8');
}
echo "";
}
$cache = $this->getPartialCacheStore();
$scope = new SSViewer_DataPresenter($item, $overlay, $underlay, $inheritedScope);
$val = '';
include($cacheFile);
return $val;
}
/**
* The process() method handles the "meat" of the template processing.
*
* It takes care of caching the output (via {@link Cache}), as well as
* replacing the special "$Content" and "$Layout" placeholders with their
* respective subtemplates.
*
* The method injects extra HTML in the header via {@link Requirements::includeInHTML()}.
*
* Note: You can call this method indirectly by {@link ViewableData->renderWith()}.
*
* @param ViewableData $item
* @param array|null $arguments Arguments to an included template
* @param ViewableData $inheritedScope The current scope of a parent template including a sub-template
* @return DBHTMLText Parsed template output.
*/
public function process($item, $arguments = null, $inheritedScope = null) {
SSViewer::$topLevel[] = $item;
$template = $this->chosen;
$cacheFile = TEMP_FOLDER . "/.cache"
. str_replace(array('\\','/',':'), '.', Director::makeRelative(realpath($template)));
$lastEdited = filemtime($template);
if(!file_exists($cacheFile) || filemtime($cacheFile) < $lastEdited) {
$content = file_get_contents($template);
$content = $this->parseTemplateContent($content, $template);
$fh = fopen($cacheFile,'w');
fwrite($fh, $content);
fclose($fh);
}
$underlay = array('I18NNamespace' => basename($template));
// Makes the rendered sub-templates available on the parent item,
// through $Content and $Layout placeholders.
foreach(array('Content', 'Layout') as $subtemplate) {
$sub = null;
if(isset($this->subTemplates[$subtemplate])) {
$sub = $this->subTemplates[$subtemplate];
}
elseif(!is_array($this->templates)) {
$sub = ['type' => $subtemplate, $this->templates];
}
elseif(!array_key_exists('type', $this->templates) || !$this->templates['type']) {
$sub = array_merge($this->templates, ['type' => $subtemplate]);
}
if ($sub) {
$subtemplateViewer = clone $this;
// Disable requirements - this will be handled by the parent template
$subtemplateViewer->includeRequirements(false);
// Select the right template
$subtemplateViewer->setTemplate($sub);
if ($subtemplateViewer->exists()) {
$underlay[$subtemplate] = $subtemplateViewer->process($item, $arguments);
}
}
}
$output = $this->includeGeneratedTemplate($cacheFile, $item, $arguments, $underlay, $inheritedScope);
if($this->includeRequirements) {
$output = Requirements::includeInHTML($output);
}
array_pop(SSViewer::$topLevel);
// If we have our crazy base tag, then fix # links referencing the current page.
$rewrite = SSViewer::config()->get('rewrite_hash_links');
if($this->rewriteHashlinks && $rewrite) {
if(strpos($output, '";
} else {
$thisURLRelativeToBase = Convert::raw2att(preg_replace("/^(\\/)+/", "/", $_SERVER['REQUEST_URI']));
}
$output = preg_replace('/(]+href *= *)"#/i', '\\1"' . $thisURLRelativeToBase . '#', $output);
}
}
return DBField::create_field('HTMLFragment', $output);
}
/**
* Execute the given template, passing it the given data.
* Used by the <% include %> template tag to process templates.
*
* @param string $template Template name
* @param mixed $data Data context
* @param array $arguments Additional arguments
* @param Object $scope
* @return string Evaluated result
*/
public static function execute_template($template, $data, $arguments = null, $scope = null) {
$v = new SSViewer($template);
$v->includeRequirements(false);
return $v->process($data, $arguments, $scope);
}
/**
* Execute the evaluated string, passing it the given data.
* Used by partial caching to evaluate custom cache keys expressed using
* template expressions
*
* @param string $content Input string
* @param mixed $data Data context
* @param array $arguments Additional arguments
* @return string Evaluated result
*/
public static function execute_string($content, $data, $arguments = null) {
$v = SSViewer::fromString($content);
$v->includeRequirements(false);
return $v->process($data, $arguments);
}
public function parseTemplateContent($content, $template="") {
return $this->getParser()->compileString(
$content,
$template,
Director::isDev() && SSViewer::config()->get('source_file_comments')
);
}
/**
* Returns the filenames of the template that will be rendered. It is a map that may contain
* 'Content' & 'Layout', and will have to contain 'main'
*/
public function templates() {
return array_merge(['main' => $this->chosen], $this->subTemplates);
}
/**
* @param string $type "Layout" or "main"
* @param string $file Full system path to the template file
*/
public function setTemplateFile($type, $file) {
if (!$type || $type == 'main') $this->chosen = $file;
else $this->subTemplates[$type] = $file;
}
/**
* Return an appropriate base tag for the given template.
* It will be closed on an XHTML document, and unclosed on an HTML document.
*
* @param string $contentGeneratedSoFar The content of the template generated so far; it should contain
* the DOCTYPE declaration.
* @return string
*/
public static function get_base_tag($contentGeneratedSoFar) {
$base = Director::absoluteBaseURL();
// Is the document XHTML?
if(preg_match('/]+xhtml/i', $contentGeneratedSoFar)) {
return "";
} else {
return "";
}
}
}