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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Contains the Translation2_Decorator_CacheLiteFunction class
*
* PHP versions 4 and 5
*
* LICENSE: Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE FREEBSD PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @category Internationalization
* @package Translation2
* @author Lorenzo Alberton <l.alberton@quipo.it>
* @copyright 2004-2007 Lorenzo Alberton
* @license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
* @version CVS: $Id: CacheLiteFunction.php 305985 2010-12-05 22:55:33Z clockwerx $
* @link http://pear.php.net/package/Translation2
*/
/**
* Load Translation2 decorator base class
* and Cache_Lite_Function class
*/
require_once 'Translation2/Decorator.php';
require_once 'Cache/Lite/Function.php';
/**
* Decorator to cache fetched data using the Cache_Lite_Function class.
*
* @category Internationalization
* @package Translation2
* @author Lorenzo Alberton <l.alberton@quipo.it>
* @copyright 2004-2007 Lorenzo Alberton
* @license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
* @version CVS: $Id: CacheLiteFunction.php 305985 2010-12-05 22:55:33Z clockwerx $
* @link http://pear.php.net/package/Translation2
*/
class Translation2_Decorator_CacheLiteFunction extends Translation2_Decorator
{
// {{{ class vars
/**
* Cache_Lite_Function object
* @var object
*/
var $cacheLiteFunction = null;
/**
* @var int (default 1)
* @access private
*/
var $tempVarNameGenerator = 1;
/**
* @var string
* @access private
*/
var $tempVarName = null;
/**
* Cache lifetime (in seconds)
* @var int $lifeTime
* @access private
*/
var $lifeTime = 3600;
/**
* Directory where to put the cache files
* (make sure to add a trailing slash)
* @var string $cacheDir
* @access private
*/
var $cacheDir = '/tmp/';
/**
* Enable / disable fileLocking. Can avoid cache corruption under bad
* circumstances.
* @var string $cacheDir
* @access private
*/
var $fileLocking = true;
/**
* Enable / disable caching
* (can be very useful to debug cached scripts)
* @var boolean $caching
*/
var $caching = true;
/**
* Frequency of cache cleaning.
* Higher values mean lower cleaning probability.
* Set 0 to disable. Set 1 to clean at every request.
* @var boolean $caching
*/
var $cleaningFrequency = 0;
/**
* Name of default cache group.
* @var string $defaultGroup
*/
var $defaultGroup = 'Translation2';
// }}}
// {{{ _prepare()
/**
* Istanciate a new Cache_Lite_Function object
* and get the name for an unused global variable,
* needed by Cache_Lite_Function
*
* @return void
* @access private
*/
function _prepare()
{
if (is_null($this->cacheLiteFunction)) {
$cache_options = array(
'caching' => $this->caching,
'cacheDir' => $this->cacheDir,
'lifeTime' => $this->lifeTime,
'fileLocking' => $this->fileLocking,
'defaultGroup' => $this->defaultGroup,
);
$this->cacheLiteFunction = new Cache_Lite_Function($cache_options);
}
$this->_cleanCache();
}
// }}}
// {{{ setLang()
/**
* Set default lang
*
* Set the language that shall be used when retrieving strings.
*
* @param string $langID language code (for instance, 'en' or 'it')
*
* @return void
*/
function setLang($langID)
{
// WITHOUT THIS, IT DOESN'T WORK
global $translation2_storage_cachelitefunction_temp;
//generate temp variable
$translation2_storage_cachelitefunction_temp = $this->translation2->storage;
$this->_prepare();
$res = $this->cacheLiteFunction->call(
'translation2_storage_cachelitefunction_temp->setLang', $langID);
if (PEAR::isError($res)) {
return $res;
}
$this->translation2->lang = $res;
}
// }}}
// {{{ setCacheOption()
/**
* Set a Cache_Lite option
*
* Passes a Cache_Lite option forward to the Cache_Lite object
* See Cache_Lite constructor for available options
*
* @param string $name name of the option
* @param string $value new value of the option
*
* @return self
* @access public
* @see Cache_Lite::setOption()
*/
function setCacheOption($name, $value)
{
$this->_prepare();
$this->cacheLiteFunction->setOption($name, $value);
return $this;
}
// }}}
// {{{ getLang()
/**
* get lang info
*
* Get some extra information about the language (its full name,
* the localized error text, ...)
*
* @param string $langID language ID
* @param string $format ['name', 'meta', 'error_text', 'array']
*
* @return mixed [string | array], depending on $format
*/
function getLang($langID = null, $format = 'name')
{
$langs = $this->getLangs('array');
if (is_null($langID)) {
if (!isset($this->lang['id']) || !array_key_exists($this->lang['id'], $langs)) {
$msg = 'Translation2::getLang(): unknown language "'.$langID.'".'
.' Use Translation2::setLang() to set a default language.';
return $this->storage->raiseError($msg, TRANSLATION2_ERROR_UNKNOWN_LANG);
}
$langID = $this->lang['id'];
}
if ($format == 'array') {
return $langs[$langID];
} elseif (isset($langs[$langID][$format])) {
return $langs[$langID][$format];
} elseif (isset($langs[$langID]['name'])) {
return $langs[$langID]['name'];
}
$msg = 'Translation2::getLang(): unknown language "'.$langID.'".'
.' Use Translation2::setLang() to set a default language.';
return $this->storage->raiseError($msg, TRANSLATION2_ERROR_UNKNOWN_LANG);
}
// }}}
// {{{ getLangs()
/**
* get langs
*
* Get some extra information about the languages (their full names,
* the localized error text, their codes, ...)
*
* @param string $format ['ids', 'names', 'array']
*
* @return array
*/
function getLangs($format = 'name')
{
// WITHOUT THIS, IT DOESN'T WORK
global $translation2_cachelitefunction_temp;
//generate temp variable
$translation2_cachelitefunction_temp = $this->translation2;
$this->_prepare();
return $this->cacheLiteFunction->call('translation2_cachelitefunction_temp->getLangs',
$format);
}
// }}}
// {{{ getRaw()
/**
* Get translated string (as-is)
*
* First check if the string is cached, if not => fetch the page
* from the container and cache it for later use.
*
* @param string $stringID string ID
* @param string $pageID page/group ID
* @param string $langID language ID
* @param string $defaultText Text to display when the strings in both
* the default and the fallback lang are empty
*
* @return string
*/
function getRaw($stringID, $pageID = TRANSLATION2_DEFAULT_PAGEID, $langID = null, $defaultText = '')
{
// WITHOUT THIS, IT DOESN'T WORK
global $translation2_cachelitefunction_temp;
//generate temp variable
$translation2_cachelitefunction_temp = $this->translation2;
if ($pageID == TRANSLATION2_DEFAULT_PAGEID) {
$pageID = $this->translation2->currentPageID;
}
$langID = empty($langID) ? $this->translation2->lang['id'] : $langID;
$this->_prepare();
return $this->cacheLiteFunction->call('translation2_cachelitefunction_temp->getRaw',
$stringID, $pageID, $langID, $defaultText);
}
// }}}
// {{{ get()
/**
* Get translated string
*
* First check if the string is cached, if not => fetch the page
* from the container and cache it for later use.
*
* @param string $stringID string ID
* @param string $pageID page/group ID
* @param string $langID language ID
* @param string $defaultText Text to display when the strings in both
* the default and the fallback lang are empty
*
* @return string
*/
function get($stringID, $pageID = TRANSLATION2_DEFAULT_PAGEID, $langID = null, $defaultText = '')
{
// WITHOUT THIS, IT DOESN'T WORK
global $translation2_cachelitefunction_temp;
//generate temp variable
$translation2_cachelitefunction_temp = $this->translation2->storage;
if ($pageID == TRANSLATION2_DEFAULT_PAGEID) {
$pageID = $this->translation2->currentPageID;
}
$langID = empty($langID) ? $this->translation2->lang['id'] : $langID;
$this->_prepare();
$string = $this->cacheLiteFunction->call('translation2_cachelitefunction_temp->getOne',
$stringID, $pageID, $langID);
if (empty($string)) {
return $defaultText;
}
return $this->translation2->_replaceParams($string);
}
// }}}
// {{{ getRawPage()
/**
* Get the array of strings in a page
*
* First check if the strings are cached, if not => fetch the page
* from the container and cache it for later use.
*
* @param string $pageID page/group ID
* @param string $langID language ID
*
* @return array
*/
function getRawPage($pageID = TRANSLATION2_DEFAULT_PAGEID, $langID = null)
{
// WITHOUT THIS, IT DOESN'T WORK
global $translation2_cachelitefunction_temp;
//generate temp variable
$translation2_cachelitefunction_temp = $this->translation2;
if ($pageID == TRANSLATION2_DEFAULT_PAGEID) {
$pageID = $this->translation2->currentPageID;
}
$langID = empty($langID) ? $this->translation2->lang['id'] : $langID;
$this->_prepare();
return $this->cacheLiteFunction->call('translation2_cachelitefunction_temp->getRawPage',
$pageID, $langID);
}
// }}}
// {{{ getPage()
/**
* Same as getRawPage, but resort to fallback language and
* replace parameters when needed
*
* @param string $pageID page/group ID
* @param string $langID language ID
*
* @return array
*/
function getPage($pageID = TRANSLATION2_DEFAULT_PAGEID, $langID = null)
{
// WITHOUT THIS, IT DOESN'T WORK
global $translation2_cachelitefunction_temp;
//generate temp variable
$translation2_cachelitefunction_temp = $this->translation2;
if ($pageID == TRANSLATION2_DEFAULT_PAGEID) {
$pageID = $this->translation2->currentPageID;
}
$langID = empty($langID) ? $this->translation2->lang['id'] : $langID;
$this->_prepare();
return $this->cacheLiteFunction->call('translation2_cachelitefunction_temp->getPage',
$pageID, $langID);
}
// }}}
// {{{ getStringID()
/**
* Get translated string
*
* @param string $string This is NOT the stringID, this is a real string.
* The method will search for its matching stringID,
* and then it will return the associate string in the
* selected language.
* @param string $pageID page/group ID
*
* @return string
*/
function getStringID($string, $pageID=TRANSLATION2_DEFAULT_PAGEID)
{
// WITHOUT THIS, IT DOESN'T WORK
global $translation2_cachelitefunction_temp;
//generate temp variable
$translation2_cachelitefunction_temp = $this->translation2;
if ($pageID == TRANSLATION2_DEFAULT_PAGEID) {
$pageID = $this->translation2->currentPageID;
}
$this->_prepare();
return $this->cacheLiteFunction->call('translation2_cachelitefunction_temp->getStringID',
$string, $pageID);
}
// }}}
// {{{ _cleanCache()
/**
* Statistically purge the cache
*
* @return void
*/
function _cleanCache()
{
if ($this->cleaningFrequency > 0) {
if (mt_rand(1, $this->cleaningFrequency) == 1) {
$this->cacheLiteFunction->clean($this->defaultGroup);
}
}
}
// }}}
}
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