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authorplegall <plg@piwigo.org>2015-12-10 14:02:22 +0100
committerplegall <plg@piwigo.org>2015-12-10 14:02:22 +0100
commitfa10e0945ecd45bfe78a2c8fb015a43092b4944b (patch)
tree19cf59c08877e43325efbe9a2584114011a25522 /include/smarty/libs/sysplugins/smarty_template_cached.php
parent16f6a54fa719cc79ff942e4bb8139d7ca09ed997 (diff)
bug #385 update to smarty-3.1.28-dev (from Github)
Diffstat (limited to 'include/smarty/libs/sysplugins/smarty_template_cached.php')
-rw-r--r--include/smarty/libs/sysplugins/smarty_template_cached.php246
1 files changed, 246 insertions, 0 deletions
diff --git a/include/smarty/libs/sysplugins/smarty_template_cached.php b/include/smarty/libs/sysplugins/smarty_template_cached.php
new file mode 100644
index 000000000..cecf42986
--- /dev/null
+++ b/include/smarty/libs/sysplugins/smarty_template_cached.php
@@ -0,0 +1,246 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Uwe Tews
+ * Date: 04.12.2014
+ * Time: 06:08
+ */
+
+/**
+ * Smarty Resource Data Object
+ * Cache Data Container for Template Files
+ *
+ * @package Smarty
+ * @subpackage TemplateResources
+ * @author Rodney Rehm
+ */
+class Smarty_Template_Cached extends Smarty_Template_Resource_Base
+{
+ /**
+ * Cache Is Valid
+ *
+ * @var boolean
+ */
+ public $valid = null;
+
+ /**
+ * CacheResource Handler
+ *
+ * @var Smarty_CacheResource
+ */
+ public $handler = null;
+
+ /**
+ * Template Cache Id (Smarty_Internal_Template::$cache_id)
+ *
+ * @var string
+ */
+ public $cache_id = null;
+
+ /**
+ * saved cache lifetime in seconds
+ *
+ * @var integer
+ */
+ public $cache_lifetime = 0;
+
+ /**
+ * Id for cache locking
+ *
+ * @var string
+ */
+ public $lock_id = null;
+
+ /**
+ * flag that cache is locked by this instance
+ *
+ * @var bool
+ */
+ public $is_locked = false;
+
+ /**
+ * Source Object
+ *
+ * @var Smarty_Template_Source
+ */
+ public $source = null;
+
+ /**
+ * Nocache hash codes of processed compiled templates
+ *
+ * @var array
+ */
+ public $hashes = array();
+
+ /**
+ * create Cached Object container
+ *
+ * @param Smarty_Internal_Template $_template template object
+ */
+ public function __construct(Smarty_Internal_Template $_template)
+ {
+ $this->compile_id = $_template->compile_id;
+ $this->cache_id = $_template->cache_id;
+ $this->source = $_template->source;
+ if (!class_exists('Smarty_CacheResource', false)) {
+ require SMARTY_SYSPLUGINS_DIR . 'smarty_cacheresource.php';
+ }
+ $this->handler = Smarty_CacheResource::load($_template->smarty);
+ }
+
+ /**
+ * @param Smarty_Internal_Template $_template
+ *
+ * @return Smarty_Template_Cached
+ */
+ static function load(Smarty_Internal_Template $_template)
+ {
+ $_template->cached = new Smarty_Template_Cached($_template);
+ $_template->cached->handler->populate($_template->cached, $_template);
+ // caching enabled ?
+ if (!($_template->caching == Smarty::CACHING_LIFETIME_CURRENT ||
+ $_template->caching == Smarty::CACHING_LIFETIME_SAVED) || $_template->source->handler->recompiled
+ ) {
+ $_template->cached->valid = false;
+ }
+ return $_template->cached;
+ }
+
+ /**
+ * Render cache template
+ *
+ * @param \Smarty_Internal_Template $_template
+ * @param bool $no_output_filter
+ *
+ * @throws \Exception
+ */
+ public function render(Smarty_Internal_Template $_template, $no_output_filter = true)
+ {
+ if ($this->isCached($_template)) {
+ if ($_template->smarty->debugging) {
+ $_template->smarty->_debug->start_cache($_template);
+ }
+ if (!$this->processed) {
+ $this->process($_template);
+ }
+ $this->getRenderedTemplateCode($_template);
+ if ($_template->smarty->debugging) {
+ $_template->smarty->_debug->end_cache($_template);
+ }
+ return;
+ } else {
+ $_template->smarty->ext->_updateCache->updateCache($this, $_template, $no_output_filter);
+ }
+ }
+
+ /**
+ * Check if cache is valid, lock cache if required
+ *
+ * @param \Smarty_Internal_Template $_template
+ *
+ * @return bool flag true if cache is valid
+ */
+ public function isCached(Smarty_Internal_Template $_template)
+ {
+ if ($this->valid !== null) {
+ return $this->valid;
+ }
+ while (true) {
+ while (true) {
+ if ($this->exists === false || $_template->smarty->force_compile || $_template->smarty->force_cache) {
+ $this->valid = false;
+ } else {
+ $this->valid = true;
+ }
+ if ($this->valid && $_template->caching == Smarty::CACHING_LIFETIME_CURRENT &&
+ $_template->cache_lifetime >= 0 && time() > ($this->timestamp + $_template->cache_lifetime)
+ ) {
+ // lifetime expired
+ $this->valid = false;
+ }
+ if ($this->valid && $_template->smarty->compile_check == 1 &&
+ $_template->source->getTimeStamp() > $this->timestamp
+ ) {
+ $this->valid = false;
+ }
+ if ($this->valid || !$_template->smarty->cache_locking) {
+ break;
+ }
+ if (!$this->handler->locked($_template->smarty, $this)) {
+ $this->handler->acquireLock($_template->smarty, $this);
+ break 2;
+ }
+ $this->handler->populate($this, $_template);
+ }
+ if ($this->valid) {
+ if (!$_template->smarty->cache_locking || $this->handler->locked($_template->smarty, $this) === null) {
+ // load cache file for the following checks
+ if ($_template->smarty->debugging) {
+ $_template->smarty->_debug->start_cache($_template);
+ }
+ if ($this->handler->process($_template, $this) === false) {
+ $this->valid = false;
+ } else {
+ $this->processed = true;
+ }
+ if ($_template->smarty->debugging) {
+ $_template->smarty->_debug->end_cache($_template);
+ }
+ } else {
+ $this->is_locked = true;
+ continue;
+ }
+ } else {
+ return $this->valid;
+ }
+ if ($this->valid && $_template->caching === Smarty::CACHING_LIFETIME_SAVED &&
+ $_template->cached->cache_lifetime >= 0 &&
+ (time() > ($_template->cached->timestamp + $_template->cached->cache_lifetime))
+ ) {
+ $this->valid = false;
+ }
+ if ($_template->smarty->cache_locking) {
+ if (!$this->valid) {
+ $this->handler->acquireLock($_template->smarty, $this);
+ } elseif ($this->is_locked) {
+ $this->handler->releaseLock($_template->smarty, $this);
+ }
+ }
+ return $this->valid;
+ }
+ return $this->valid;
+ }
+
+ /**
+ * Process cached template
+ *
+ * @param Smarty_Internal_Template $_template template object
+ * @param bool $update flag if called because cache update
+ */
+ public function process(Smarty_Internal_Template $_template, $update = false)
+ {
+ if ($this->handler->process($_template, $this, $update) === false) {
+ $this->valid = false;
+ }
+ if ($this->valid) {
+ $this->processed = true;
+ } else {
+ $this->processed = false;
+ }
+ }
+
+ /**
+ * Read cache content from handler
+ *
+ * @param Smarty_Internal_Template $_template template object
+ *
+ * @return string content
+ */
+ public function read(Smarty_Internal_Template $_template)
+ {
+ if (!$_template->source->handler->recompiled) {
+ return $this->handler->readCachedContent($_template);
+ }
+ return false;
+ }
+}