Inheritance diagram for HTMLPurifier_DefinitionCache_Serializer:

Collaboration diagram for HTMLPurifier_DefinitionCache_Serializer:

Public Member Functions
	add ($def, $config)
	Adds a definition object to the cache.
	set ($def, $config)
	Unconditionally saves a definition object to the cache.
	replace ($def, $config)
	Replace an object in the cache.
	get ($config)
	Retrieves a definition object from the cache.
	remove ($config)
	Removes a definition object to the cache.
	flush ($config)
	Clears all objects from cache.
	cleanup ($config)
	Clears all expired (older version or revision) objects from cache.
	generateFilePath ($config)
	Generates the file path to the serial file corresponding to the configuration and definition name.
	generateDirectoryPath ($config)
	Generates the path to the directory contain this cache's serial files.
	generateBaseDirectoryPath ($config)
	Generates path to base directory that contains all definition type serials.
Public Member Functions inherited from HTMLPurifier_DefinitionCache
	__construct ($type)
	generateKey ($config)
	Generates a unique identifier for a particular configuration.
	isOld ($key, $config)
	Tests whether or not a key is old with respect to the configuration's version and revision number.
	checkDefType ($def)
	Checks if a definition's type jives with the cache's type.

Private Member Functions
	_write ($file, $data)
	Convenience wrapper function for file_put_contents.
	_prepareDir ($config)
	Prepares the directory that this type stores the serials in.
	_testPermissions ($dir)
	Tests permissions on a directory and throws out friendly error messages and attempts to chmod it itself if possible.

Additional Inherited Members
Data Fields inherited from HTMLPurifier_DefinitionCache
	$type

Detailed Description

Definition at line 3 of file Serializer.php.

Member Function Documentation

HTMLPurifier_DefinitionCache_Serializer::_prepareDir ( $config )

private

Prepares the directory that this type stores the serials in.

Returns: True if successful

Definition at line 110 of file Serializer.php.

References $config, _testPermissions(), generateBaseDirectoryPath(), and generateDirectoryPath().

Referenced by add(), cleanup(), flush(), replace(), and set().

                                          {
        $directory = $this->generateDirectoryPath($config);
        if (!is_dir($directory)) {
            $base = $this->generateBaseDirectoryPath($config);
            if (!is_dir($base)) {
                trigger_error('Base directory '.$base.' does not exist,
                    please create or change using %Cache.SerializerPath',
                    E_USER_WARNING);
                return false;
            } elseif (!$this->_testPermissions($base)) {
                return false;
            }
            $old = umask(0022); // disable group and world writes
            mkdir($directory);
            umask($old);
        } elseif (!$this->_testPermissions($directory)) {
            return false;
        }
        return true;
    }

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HTMLPurifier_DefinitionCache_Serializer::_testPermissions ( $dir )

private

Tests permissions on a directory and throws out friendly error messages and attempts to chmod it itself if possible.

Definition at line 135 of file Serializer.php.

References $dir.

Referenced by _prepareDir().

                                            {
        // early abort, if it is writable, everything is hunky-dory
        if (is_writable($dir)) return true;
        if (!is_dir($dir)) {
            // generally, you'll want to handle this beforehand
            // so a more specific error message can be given
            trigger_error('Directory '.$dir.' does not exist',
                E_USER_WARNING);
            return false;
        }
        if (function_exists('posix_getuid')) {
            // POSIX system, we can give more specific advice
            if (fileowner($dir) === posix_getuid()) {
                // we can chmod it ourselves
                chmod($dir, 0755);
                return true;
            } elseif (filegroup($dir) === posix_getgid()) {
                $chmod = '775';
            } else {
                // PHP's probably running as nobody, so we'll
                // need to give global permissions
                $chmod = '777';
            }
            trigger_error('Directory '.$dir.' not writable, '.
                'please chmod to ' . $chmod,
                E_USER_WARNING);
        } else {
            // generic error message
            trigger_error('Directory '.$dir.' not writable, '.
                'please alter file permissions',
                E_USER_WARNING);
        }
        return false;
    }

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HTMLPurifier_DefinitionCache_Serializer::_write	(	$file,
		$data
	)

private

Convenience wrapper function for file_put_contents.

Parameters

$file	File name to write to
$data	Data to write into file

Returns: Number of bytes written if success, or false if failure.

Definition at line 102 of file Serializer.php.

References $data, and $file.

Referenced by add(), replace(), and set().

                                          {
        return file_put_contents($file, $data);
    }

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HTMLPurifier_DefinitionCache_Serializer::add	(	$def,
		$config
	)

Adds a definition object to the cache.

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 7 of file Serializer.php.

References $config, $file, _prepareDir(), _write(), HTMLPurifier_DefinitionCache\checkDefType(), and generateFilePath().

                                       {
        if (!$this->checkDefType($def)) return;
        $file = $this->generateFilePath($config);
        if (file_exists($file)) return false;
        if (!$this->_prepareDir($config)) return false;
        return $this->_write($file, serialize($def));
    }

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HTMLPurifier_DefinitionCache_Serializer::cleanup ( $config )

Clears all expired (older version or revision) objects from cache.

Note: Be carefuly implementing this method as flush. Flush must not interfere with other Definition types, and cleanup() should not be repeatedly called by userland code.

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 53 of file Serializer.php.

References $config, $dir, $filename, _prepareDir(), generateDirectoryPath(), and HTMLPurifier_DefinitionCache\isOld().

                                     {
        if (!$this->_prepareDir($config)) return false;
        $dir = $this->generateDirectoryPath($config);
        $dh  = opendir($dir);
        while (false !== ($filename = readdir($dh))) {
            if (empty($filename)) continue;
            if ($filename[0] === '.') continue;
            $key = substr($filename, 0, strlen($filename) - 4);
            if ($this->isOld($key, $config)) unlink($dir . '/' . $filename);
        }
    }

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HTMLPurifier_DefinitionCache_Serializer::flush ( $config )

Clears all objects from cache.

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 42 of file Serializer.php.

References $config, $dir, $filename, _prepareDir(), and generateDirectoryPath().

                                   {
        if (!$this->_prepareDir($config)) return false;
        $dir = $this->generateDirectoryPath($config);
        $dh  = opendir($dir);
        while (false !== ($filename = readdir($dh))) {
            if (empty($filename)) continue;
            if ($filename[0] === '.') continue;
            unlink($dir . '/' . $filename);
        }
    }

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HTMLPurifier_DefinitionCache_Serializer::generateBaseDirectoryPath ( $config )

Generates path to base directory that contains all definition type serials.

Todo:: Make protected

Definition at line 90 of file Serializer.php.

References $config.

Referenced by _prepareDir(), and generateDirectoryPath().

                                                       {
        $base = $config->get('Cache.SerializerPath');
        $base = is_null($base) ? HTMLPURIFIER_PREFIX . '/HTMLPurifier/DefinitionCache/Serializer' : $base;
        return $base;
    }

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HTMLPurifier_DefinitionCache_Serializer::generateDirectoryPath ( $config )

Generates the path to the directory contain this cache's serial files.

Note: No trailing slash

Todo:: Make protected

Definition at line 80 of file Serializer.php.

References $config, HTMLPurifier_DefinitionCache\$type, and generateBaseDirectoryPath().

Referenced by _prepareDir(), cleanup(), flush(), and generateFilePath().

                                                   {
        $base = $this->generateBaseDirectoryPath($config);
        return $base . '/' . $this->type;
    }

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HTMLPurifier_DefinitionCache_Serializer::generateFilePath ( $config )

Generates the file path to the serial file corresponding to the configuration and definition name.

Todo:: Make protected

Definition at line 70 of file Serializer.php.

References $config, generateDirectoryPath(), and HTMLPurifier_DefinitionCache\generateKey().

Referenced by add(), get(), remove(), replace(), and set().

                                              {
        $key = $this->generateKey($config);
        return $this->generateDirectoryPath($config) . '/' . $key . '.ser';
    }

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HTMLPurifier_DefinitionCache_Serializer::get ( $config )

Retrieves a definition object from the cache.

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 30 of file Serializer.php.

References $config, $file, and generateFilePath().

                                 {
        $file = $this->generateFilePath($config);
        if (!file_exists($file)) return false;
        return unserialize(file_get_contents($file));
    }

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HTMLPurifier_DefinitionCache_Serializer::remove ( $config )

Removes a definition object to the cache.

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 36 of file Serializer.php.

References $config, $file, and generateFilePath().

                                    {
        $file = $this->generateFilePath($config);
        if (!file_exists($file)) return false;
        return unlink($file);
    }

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HTMLPurifier_DefinitionCache_Serializer::replace	(	$def,
		$config
	)

Replace an object in the cache.

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 22 of file Serializer.php.

References $config, $file, _prepareDir(), _write(), HTMLPurifier_DefinitionCache\checkDefType(), and generateFilePath().

                                           {
        if (!$this->checkDefType($def)) return;
        $file = $this->generateFilePath($config);
        if (!file_exists($file)) return false;
        if (!$this->_prepareDir($config)) return false;
        return $this->_write($file, serialize($def));
    }

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HTMLPurifier_DefinitionCache_Serializer::set	(	$def,
		$config
	)

Unconditionally saves a definition object to the cache.

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 15 of file Serializer.php.

References $config, $file, _prepareDir(), _write(), HTMLPurifier_DefinitionCache\checkDefType(), and generateFilePath().

                                       {
        if (!$this->checkDefType($def)) return;
        $file = $this->generateFilePath($config);
        if (!$this->_prepareDir($config)) return false;
        return $this->_write($file, serialize($def));
    }

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The documentation for this class was generated from the following file:

Services/Html/HtmlPurifier/library/HTMLPurifier/DefinitionCache/Serializer.php

Public Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation