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232252475f
Patch is mostly created by script in egroupware/doc/fix_depricated.php in separate commit. I do NOT advice to apply this patch to a production system (it's commited to trunk!), as the automatic modified regular expressions have a good change to break something ...
1489 lines
31 KiB
PHP
Executable File
1489 lines
31 KiB
PHP
Executable File
<?php
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/**
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*
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* Error constants.
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*
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*/
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define('SAVANT2_ERROR_ASSIGN', -1);
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define('SAVANT2_ERROR_ASSIGNREF', -2);
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define('SAVANT2_ERROR_COMPILER', -3);
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define('SAVANT2_ERROR_NOFILTER', -4);
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define('SAVANT2_ERROR_NOPLUGIN', -5);
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define('SAVANT2_ERROR_NOSCRIPT', -6);
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define('SAVANT2_ERROR_NOTEMPLATE', -7);
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define('SAVANT2_ERROR_COMPILE_FAIL', -8);
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/**
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*
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* Error messages.
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*
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*/
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if (! isset($GLOBALS['_SAVANT2']['error'])) {
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$GLOBALS['_SAVANT2']['error'] = array(
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SAVANT2_ERROR_ASSIGN => 'assign() parameters not correct',
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SAVANT2_ERROR_ASSIGNREF => 'assignRef() parameters not correct',
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SAVANT2_ERROR_COMPILER => 'compiler not an object or has no compile() method',
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SAVANT2_ERROR_NOFILTER => 'filter file not found',
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SAVANT2_ERROR_NOPLUGIN => 'plugin file not found',
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SAVANT2_ERROR_NOSCRIPT => 'compiled template script file not found',
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SAVANT2_ERROR_NOTEMPLATE => 'template source file not found',
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SAVANT2_ERROR_COMPILE_FAIL => 'template source failed to compile'
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);
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}
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/**
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*
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* Provides an object-oriented template system.
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*
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* Savant2 helps you separate model logic from view logic using PHP as
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* the template language. By default, Savant2 does not compile templates.
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* However, you may pass an optional compiler object to compile template
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* source to include-able PHP code.
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*
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* Please see the documentation at {@link http://phpsavant.com/}, and be
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* sure to donate! :-)
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*
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* $Id$
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*
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* @author Paul M. Jones <pmjones@ciaweb.net>
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*
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* @package Savant2
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*
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* @version 2.3.3 stable
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*
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* @license http://www.gnu.org/copyleft/lesser.html LGPL
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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*/
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class Savant2 {
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/**
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*
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* PHP5 ONLY: What method __call() will alias to.
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*
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* Generally 'plugin' or 'splugin' (as __call() is intended for those).
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*
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* @access private
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*
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* @var string
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*
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*/
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var $_call = 'plugin';
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/**
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*
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* The custom compiler (pre-processor) object, if any.
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*
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* @access private
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*
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* @var object
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*
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*/
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var $_compiler = null;
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/**
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*
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* The class type to use when instantiating error objects.
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*
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* @access private
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*
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* @var string
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*
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*/
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var $_error = null;
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/**
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*
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* Whether or not to extract assigned variables into fetch() scope.
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*
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* When true, all variables and references assigned to Savant2 are
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* extracted into the local scope of the template script at fetch()
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* time, and may be addressed as "$varname" instead of
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* "$this->varname". The "$this->varname" notation will also work.
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*
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* When false, you //must// use "$this->varname" in your templates to
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* address a variable instead of "$varname". This has three
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* benefits: speed (no time spent extracting variables), memory use
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* (saves RAM by not making new references to variables), and clarity
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* (any $this->varname is obviously an assigned var, and vars created
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* within the template are not prefixed with $this).
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*
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* @access private
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*
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* @var bool
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*
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*/
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var $_extract = false;
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/**
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*
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* The output of the template script.
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*
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* @access private
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*
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* @var string
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*
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*/
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var $_output = null;
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/**
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*
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* The set of search directories for resources (plugins/filters) and
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* templates.
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*
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* @access private
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*
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* @var array
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*
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*/
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var $_path = array(
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'resource' => array(),
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'template' => array()
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);
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/**
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*
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* Array of resource (plugin/filter) object instances.
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*
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* @access private
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*
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* @var array
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*
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*/
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var $_resource = array(
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'plugin' => array(),
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'filter' => array()
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);
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/**
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*
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* Whether or not to automatically self-reference in plugins and filters.
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*
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* @access private
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*
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* @var bool
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*
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*/
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var $_reference = false;
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/**
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*
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* The path to the compiled template script file.
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*
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* By default, the template source and template script are the same file.
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*
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* @access private
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*
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* @var string
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*
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*/
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var $_script = null;
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/**
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*
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* The name of the default template source file.
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*
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* @access private
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*
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* @var string
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*
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*/
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var $_template = null;
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var $_restrict = false;
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// -----------------------------------------------------------------
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//
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// Constructor and general property setters
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//
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// -----------------------------------------------------------------
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/**
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*
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* Constructor.
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*
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* @access public
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*
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* @param array $conf An associative array of configuration keys for
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* the Savant2 object. Any, or none, of the keys may be set. The
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* keys are:
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*
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* 'template_path' => The default path string or array of directories
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* to search for templates.
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*
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* 'resource_path' => The default path string or array of directories
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* to search for plugin and filter resources.
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*
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* 'error' => The custom error class that Savant2 should use
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* when returning errors.
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*
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* 'extract' => Whether or not to extract variables into the local
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* scope when executing a template.
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*
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* 'template' => The default template source name to use.
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*
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*/
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function Savant2($conf = array())
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{
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// set the default template search dirs
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if (isset($conf['template_path'])) {
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// user-defined dirs
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$this->setPath('template', $conf['template_path']);
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} else {
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// default directory only
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$this->setPath('template', null);
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}
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// set the default filter search dirs
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if (isset($conf['resource_path'])) {
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// user-defined dirs
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$this->setPath('resource', $conf['resource_path']);
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} else {
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// default directory only
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$this->setPath('resource', null);
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}
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// set the error class
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if (isset($conf['error'])) {
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$this->setError($conf['error']);
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}
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// set the extraction flag
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if (isset($conf['extract'])) {
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$this->setExtract($conf['extract']);
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}
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// set the restrict flag
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if (isset($conf['restrict'])) {
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$this->setRestrict($conf['restrict']);
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}
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// set the Savant reference flag
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if (isset($conf['reference'])) {
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$this->setReference($conf['reference']);
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}
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// set the default template
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if (isset($conf['template'])) {
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$this->setTemplate($conf['template']);
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}
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}
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/**
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*
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* Sets a custom compiler/pre-processor for template sources.
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*
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* By default, Savant2 does not use a compiler; use this to set your
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* own custom compiler (pre-processor) for template sources.
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*
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* @access public
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*
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* @param object $compiler The compiler object; it must have a
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* "compile()" method. If null or false, the current compiler object
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* is removed from Savant2.
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*
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* @return void
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*
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* @throws object An error object with a SAVANT2_ERROR_COMPILER code.
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*
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*/
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function setCompiler(&$compiler)
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{
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if (! $compiler) {
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// nullify any current compiler
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$this->_compiler = null;
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} elseif (is_object($compiler) && method_exists($compiler, 'compile')) {
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// refer to a compiler object
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$this->_compiler =& $compiler;
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} else {
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// no usable compiler passed
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$this->_compiler = null;
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return $this->error(SAVANT2_ERROR_COMPILER);
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}
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}
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/**
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*
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* Sets the method that __call() will alias to.
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*
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* @access public
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*
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* @param string $method The Savant2 method for __call() to alias to,
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* generally 'plugin' or 'splugin'.
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*
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* @return void
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*
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*/
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function setCall($method = 'plugin')
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{
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$this->_call = $method;
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}
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/**
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*
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* Sets the custom error class for Savant2 errors.
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*
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* @access public
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*
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* @param string $error The name of the custom error class name; if
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* null or false, resets the error class to 'Savant2_Error'.
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*
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* @return void
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*
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*/
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function setError($error)
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{
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if (! $error) {
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$this->_error = null;
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} else {
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$this->_error = $error;
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}
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}
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/**
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*
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* Turns path checking on/off.
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*
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* @access public
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*
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* @param bool $flag True to turn on path checks, false to turn off.
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*
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* @return void
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*
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*/
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function setRestrict($flag = false)
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{
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if ($flag) {
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$this->_restrict = true;
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} else {
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$this->_restrict = false;
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}
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}
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/**
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*
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* Turns extraction of variables on/off.
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*
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* @access public
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*
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* @param bool $flag True to turn on extraction, false to turn off.
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*
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* @return void
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*
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*/
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function setExtract($flag = true)
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{
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if ($flag) {
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$this->_extract = true;
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} else {
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$this->_extract = false;
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}
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}
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/**
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*
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* Sets the automated Savant reference for plugins and filters.
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*
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* @access public
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*
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* @param bool $flag Whether to reference Savant2 or not.
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*
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* @return void
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*
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*/
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function setReference($flag = false)
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{
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$this->_reference = $flag;
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}
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/**
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*
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* Sets the default template name.
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*
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* @access public
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*
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* @param string $template The default template name.
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*
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* @return void
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*
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*/
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function setTemplate($template)
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{
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$this->_template = $template;
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}
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// -----------------------------------------------------------------
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//
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// Path management and file finding
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//
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// -----------------------------------------------------------------
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/**
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*
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* Sets an entire array of search paths.
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*
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* @access public
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*
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* @param string $type The type of path to set, typcially 'template'
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* or 'resource'.
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*
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* @param string|array $new The new set of search paths. If null or
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* false, resets to the current directory only.
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*
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* @return void
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*
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*/
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function setPath($type, $new)
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{
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// clear out the prior search dirs
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$this->_path[$type] = array();
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// convert from string to path
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if (is_string($new) && ! strpos('://', $new)) {
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// the search config is a string, and it's not a stream
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// identifier (the "://" piece), add it as a path
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// string.
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$new = explode(PATH_SEPARATOR, $new);
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} else {
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// force to array
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settype($new, 'array');
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}
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// always add the fallback directories as last resort
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switch (strtolower($type)) {
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case 'template':
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$this->addPath($type, '.');
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break;
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case 'resource':
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$this->addPath($type, dirname(__FILE__) . '/Savant2/');
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break;
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}
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// actually add the user-specified directories
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foreach ($new as $dir) {
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$this->addPath($type, $dir);
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}
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}
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/**
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*
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* Adds a search directory for templates.
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*
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* @access public
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*
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* @param string $dir The directory or stream to search.
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*
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* @return void
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*
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*/
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function addPath($type, $dir)
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{
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// no surrounding spaces allowed!
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$dir = trim($dir);
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// add trailing separators as needed
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if (strpos($dir, '://') && substr($dir, -1) != '/') {
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// stream
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$dir .= '/';
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} elseif (substr($dir, -1) != DIRECTORY_SEPARATOR) {
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// directory
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$dir .= DIRECTORY_SEPARATOR;
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}
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// add to the top of the search dirs
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array_unshift($this->_path[$type], $dir);
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}
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|
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/**
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*
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* Gets the array of search directories for template sources.
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*
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* @access public
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*
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* @return array The array of search directories for template sources.
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*
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*/
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function getPath($type = null)
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{
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if (! $type) {
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return $this->_path;
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} else {
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return $this->_path[$type];
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}
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}
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|
|
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/**
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*
|
|
* Searches a series of paths for a given file.
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|
*
|
|
* @param array $type The type of paths to search (template, plugin,
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* or filter).
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|
*
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|
* @param string $file The file name to look for.
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*
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* @return string|bool The full path and file name for the target file,
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* or boolean false if the file is not found in any of the paths.
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*
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*/
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function findFile($type, $file)
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{
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// get the set of paths
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$set = $this->getPath($type);
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// start looping through them
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foreach ($set as $path) {
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// get the path to the file
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$fullname = $path . $file;
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|
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// are we doing path checks?
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|
if (! $this->_restrict) {
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|
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// no. this is faster but less secure.
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|
if (file_exists($fullname) && is_readable($fullname)) {
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return $fullname;
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}
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} else {
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// yes. this is slower, but attempts to restrict
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// access only to defined paths.
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// is the path based on a stream?
|
|
if (strpos('://', $path) === false) {
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// not a stream, so do a realpath() to avoid
|
|
// directory traversal attempts on the local file
|
|
// system. Suggested by Ian Eure, initially
|
|
// rejected, but then adopted when the secure
|
|
// compiler was added.
|
|
$path = realpath($path); // needed for substr() later
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|
$fullname = realpath($fullname);
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}
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|
|
// the substr() check added by Ian Eure to make sure
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|
// that the realpath() results in a directory registered
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|
// with Savant so that non-registered directores are not
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|
// accessible via directory traversal attempts.
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|
if (file_exists($fullname) && is_readable($fullname) &&
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substr($fullname, 0, strlen($path)) == $path) {
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|
return $fullname;
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}
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|
}
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|
}
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// could not find the file in the set of paths
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|
return false;
|
|
}
|
|
|
|
|
|
// -----------------------------------------------------------------
|
|
//
|
|
// Variable and reference assignment
|
|
//
|
|
// -----------------------------------------------------------------
|
|
|
|
|
|
/**
|
|
*
|
|
* Sets variables for the template.
|
|
*
|
|
* This method is overloaded; you can assign all the properties of
|
|
* an object, an associative array, or a single value by name.
|
|
*
|
|
* You are not allowed to set variables that begin with an underscore;
|
|
* these are either private properties for Savant2 or private variables
|
|
* within the template script itself.
|
|
*
|
|
* <code>
|
|
*
|
|
* $Savant2 = new Savant2();
|
|
*
|
|
* // assign directly
|
|
* $Savant2->var1 = 'something';
|
|
* $Savant2->var2 = 'else';
|
|
*
|
|
* // assign by name and value
|
|
* $Savant2->assign('var1', 'something');
|
|
* $Savant2->assign('var2', 'else');
|
|
*
|
|
* // assign by assoc-array
|
|
* $ary = array('var1' => 'something', 'var2' => 'else');
|
|
* $Savant2->assign($obj);
|
|
*
|
|
* // assign by object
|
|
* $obj = new stdClass;
|
|
* $obj->var1 = 'something';
|
|
* $obj->var2 = 'else';
|
|
* $Savant2->assign($obj);
|
|
*
|
|
* </code>
|
|
*
|
|
* Greg Beaver came up with the idea of assigning to public class
|
|
* properties.
|
|
*
|
|
* @access public
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_ASSIGN code.
|
|
*
|
|
*/
|
|
|
|
function assign()
|
|
{
|
|
// this method is overloaded.
|
|
$arg = func_get_args();
|
|
|
|
// must have at least one argument. no error, just do nothing.
|
|
if (! isset($arg[0])) {
|
|
return;
|
|
}
|
|
|
|
// assign by object
|
|
if (is_object($arg[0])) {
|
|
// assign public properties
|
|
foreach (get_object_vars($arg[0]) as $key => $val) {
|
|
if (substr($key, 0, 1) != '_') {
|
|
$this->$key = $val;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
// assign by associative array
|
|
if (is_array($arg[0])) {
|
|
foreach ($arg[0] as $key => $val) {
|
|
if (substr($key, 0, 1) != '_') {
|
|
$this->$key = $val;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
// assign by string name and mixed value.
|
|
//
|
|
// we use array_key_exists() instead of isset() becuase isset()
|
|
// fails if the value is set to null.
|
|
if (is_string($arg[0]) &&
|
|
substr($arg[0], 0, 1) != '_' &&
|
|
array_key_exists(1, $arg)) {
|
|
$this->$arg[0] = $arg[1];
|
|
} else {
|
|
return $this->error(SAVANT2_ERROR_ASSIGN, $arg);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Sets references for the template.
|
|
*
|
|
* // assign by name and value
|
|
* $Savant2->assignRef('ref', $reference);
|
|
*
|
|
* // assign directly
|
|
* $Savant2->ref =& $reference;
|
|
*
|
|
* Greg Beaver came up with the idea of assigning to public class
|
|
* properties.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $key The name for the reference in the template.
|
|
*
|
|
* @param mixed &$val The referenced variable.
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_ASSIGNREF code.
|
|
*
|
|
*/
|
|
|
|
function assignRef($key, &$val)
|
|
{
|
|
if (is_string($key) && substr($key, 0, 1) != '_') {
|
|
$this->$key =& $val;
|
|
} else {
|
|
return $this->error(
|
|
SAVANT2_ERROR_ASSIGNREF,
|
|
array('key' => $key, 'val' => $val)
|
|
);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Unsets assigned variables and references.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param mixed $var If null, clears all variables; if a string, clears
|
|
* the one variable named by the string; if a sequential array, clears
|
|
* the variables names in that array.
|
|
*
|
|
* @return void
|
|
*
|
|
*/
|
|
|
|
function clear($var = null)
|
|
{
|
|
if (is_null($var)) {
|
|
// clear all variables
|
|
$var = array_keys(get_object_vars($this));
|
|
} else {
|
|
// clear specific variables
|
|
settype($var, 'array');
|
|
}
|
|
|
|
// clear out the selected variables
|
|
foreach ($var as $name) {
|
|
if (substr($name, 0, 1) != '_' && isset($this->$name)) {
|
|
unset($this->$name);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Gets the current value of one, many, or all assigned variables.
|
|
*
|
|
* Never returns variables starting with an underscore; these are
|
|
* reserved for internal Savant2 use.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param mixed $key If null, returns a copy of all variables and
|
|
* their values; if an array, returns an only those variables named
|
|
* in the array; if a string, returns only that variable.
|
|
*
|
|
* @return mixed If multiple variables were reqested, returns an
|
|
* associative array where the key is the variable name and the
|
|
* value is the variable value; if one variable was requested,
|
|
* returns the variable value only.
|
|
*
|
|
*/
|
|
|
|
function getVars($key = null)
|
|
{
|
|
if (is_null($key)) {
|
|
$key = array_keys(get_object_vars($this));
|
|
}
|
|
|
|
if (is_array($key)) {
|
|
// return a series of vars
|
|
$tmp = array();
|
|
foreach ($key as $var) {
|
|
if (substr($var, 0, 1) != '_' && isset($this->$var)) {
|
|
$tmp[$var] = $this->$var;
|
|
}
|
|
}
|
|
return $tmp;
|
|
} else {
|
|
// return a single var
|
|
if (substr($key, 0, 1) != '_' && isset($this->$key)) {
|
|
return $this->$key;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// -----------------------------------------------------------------
|
|
//
|
|
// Template processing
|
|
//
|
|
// -----------------------------------------------------------------
|
|
|
|
|
|
/**
|
|
*
|
|
* Loads a template script for execution (does not execute the script).
|
|
*
|
|
* This will optionally compile the template source into a PHP script
|
|
* if a compiler object has been passed into Savant2.
|
|
*
|
|
* Also good for including templates from the template paths within
|
|
* another template, like so:
|
|
*
|
|
* include $this->loadTemplate('template.tpl.php');
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $tpl The template source name to look for.
|
|
*
|
|
* @param bool $setScript Default false; if true, sets the $this->_script
|
|
* property to the resulting script path (or null on error). Normally,
|
|
* only $this->fetch() will need to set this to true.
|
|
*
|
|
* @return string The full path to the compiled template script.
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_NOTEMPLATE code.
|
|
*
|
|
*/
|
|
|
|
function loadTemplate($tpl = null, $setScript = false)
|
|
{
|
|
// set to default template if none specified.
|
|
if (is_null($tpl)) {
|
|
$tpl = $this->_template;
|
|
}
|
|
|
|
// find the template source.
|
|
$file = $this->findFile('template', $tpl);
|
|
if (! $file) {
|
|
return $this->error(
|
|
SAVANT2_ERROR_NOTEMPLATE,
|
|
array('template' => $tpl)
|
|
);
|
|
}
|
|
|
|
// are we compiling source into a script?
|
|
if (is_object($this->_compiler)) {
|
|
// compile the template source and get the path to the
|
|
// compiled script (will be returned instead of the
|
|
// source path)
|
|
$result = $this->_compiler->compile($file);
|
|
} else {
|
|
// no compiling requested, return the source path
|
|
$result = $file;
|
|
}
|
|
|
|
// is there a script from the compiler?
|
|
if (! $result || $this->isError($result)) {
|
|
|
|
if ($setScript) {
|
|
$this->_script = null;
|
|
}
|
|
|
|
// return an error, along with any error info
|
|
// generated by the compiler.
|
|
return $this->error(
|
|
SAVANT2_ERROR_NOSCRIPT,
|
|
array(
|
|
'template' => $tpl,
|
|
'compiler' => $result
|
|
)
|
|
);
|
|
|
|
} else {
|
|
|
|
if ($setScript) {
|
|
$this->_script = $result;
|
|
}
|
|
|
|
return $result;
|
|
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* This is a an alias to loadTemplate() that cannot set the script.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $tpl The template source name to look for.
|
|
*
|
|
* @return string The full path to the compiled template script.
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_NOTEMPLATE code.
|
|
*
|
|
*/
|
|
|
|
function findTemplate($tpl = null)
|
|
{
|
|
return $this->loadTemplate($tpl, false);
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Executes a template script and returns the results as a string.
|
|
*
|
|
* @param string $_tpl The name of the template source file ...
|
|
* automatically searches the template paths and compiles as needed.
|
|
*
|
|
* @return string The output of the the template script.
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_NOSCRIPT code.
|
|
*
|
|
*/
|
|
|
|
function fetch($_tpl = null)
|
|
{
|
|
// clear prior output
|
|
$this->_output = null;
|
|
|
|
// load the template script
|
|
$_result = $this->loadTemplate($_tpl, true);
|
|
|
|
// is there a template script to be processed?
|
|
if ($this->isError($_result)) {
|
|
return $_result;
|
|
}
|
|
|
|
// unset so as not to introduce into template scope
|
|
unset($_tpl);
|
|
unset($_result);
|
|
|
|
// never allow a 'this' property
|
|
if (isset($this->this)) {
|
|
unset($this->this);
|
|
}
|
|
|
|
// are we extracting variables into local scope?
|
|
if ($this->_extract) {
|
|
// extract references to this object's public properties.
|
|
// this allows variables assigned by-reference to refer all
|
|
// the way back to the model logic. variables assigned
|
|
// by-copy only refer back to the property.
|
|
foreach (array_keys(get_object_vars($this)) as $_prop) {
|
|
if (substr($_prop, 0, 1) != '_') {
|
|
// set a variable-variable to an object property
|
|
// reference
|
|
$$_prop =& $this->$_prop;
|
|
}
|
|
}
|
|
|
|
// unset private loop vars
|
|
unset($_prop);
|
|
}
|
|
|
|
// start capturing output into a buffer
|
|
ob_start();
|
|
|
|
// include the requested template filename in the local scope
|
|
// (this will execute the view logic).
|
|
include $this->_script;
|
|
|
|
// done with the requested template; get the buffer and
|
|
// clear it.
|
|
$this->_output = ob_get_contents();
|
|
ob_end_clean();
|
|
|
|
// done!
|
|
return $this->applyFilters();
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Execute and display a template script.
|
|
*
|
|
* @param string $tpl The name of the template file to parse;
|
|
* automatically searches through the template paths.
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_NOSCRIPT code.
|
|
*
|
|
* @see fetch()
|
|
*
|
|
*/
|
|
|
|
function display($tpl = null)
|
|
{
|
|
$result = $this->fetch($tpl);
|
|
if ($this->isError($result)) {
|
|
return $result;
|
|
} else {
|
|
echo $result;
|
|
}
|
|
}
|
|
|
|
|
|
// -----------------------------------------------------------------
|
|
//
|
|
// Plugins
|
|
//
|
|
// -----------------------------------------------------------------
|
|
|
|
|
|
/**
|
|
*
|
|
* Loads a plugin class and instantiates it within Savant2.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $name The plugin name (not including Savant2_Plugin_
|
|
* prefix).
|
|
*
|
|
* @param array $conf An associative array of plugin configuration
|
|
* options.
|
|
*
|
|
* @param bool $savantRef Default false. When true, sets the $Savant
|
|
* property of the filter to a reference to this Savant object.
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_NOPLUGIN code.
|
|
*
|
|
*/
|
|
|
|
function loadPlugin($name, $conf = array(), $savantRef = null)
|
|
{
|
|
// if no $savantRef is provided, use the default.
|
|
if (is_null($savantRef)) {
|
|
$savantRef = $this->_reference;
|
|
}
|
|
|
|
// some basic information
|
|
$class = "Savant2_Plugin_$name";
|
|
$file = "$class.php";
|
|
|
|
// is it loaded?
|
|
if (! class_exists($class)) {
|
|
|
|
$result = $this->findFile('resource', $file);
|
|
if (! $result) {
|
|
return $this->error(
|
|
SAVANT2_ERROR_NOPLUGIN,
|
|
array('plugin' => $name)
|
|
);
|
|
} else {
|
|
include_once $result;
|
|
}
|
|
}
|
|
|
|
// is it instantiated?
|
|
if (! isset($this->_resource['plugin'][$name]) ||
|
|
! is_object($this->_resource['plugin'][$name]) ||
|
|
! is_a($this->_resource['plugin'][$name], $class)) {
|
|
|
|
// instantiate it
|
|
$this->_resource['plugin'][$name] = new $class($conf);
|
|
|
|
// add a Savant reference if requested
|
|
if ($savantRef) {
|
|
$this->_resource['plugin'][$name]->Savant =& $this;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Unloads one or more plugins from Savant2.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string|array $name The plugin name (not including Savant2_Plugin_
|
|
* prefix). If null, unloads all plugins; if a string, unloads that one
|
|
* plugin; if an array, unloads all plugins named as values in the array.
|
|
*
|
|
* @return void
|
|
*
|
|
*/
|
|
|
|
function unloadPlugin($name = null)
|
|
{
|
|
if (is_null($name)) {
|
|
$this->_resource['plugin'] = array();
|
|
} else {
|
|
settype($name, 'array');
|
|
foreach ($name as $key) {
|
|
if (isset($this->_resource['plugin'][$key])) {
|
|
unset($this->_resource['plugin'][$key]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Executes a plugin with arbitrary parameters and returns the
|
|
* result.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $name The plugin name (not including Savant2_Plugin_
|
|
* prefix).
|
|
*
|
|
* @return mixed The plugin results.
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_NOPLUGIN code.
|
|
*
|
|
* @see loadPlugin()
|
|
*
|
|
*/
|
|
|
|
function splugin($name)
|
|
{
|
|
// attempt to load the plugin
|
|
$result = $this->loadPlugin($name);
|
|
if ($this->isError($result)) {
|
|
return $result;
|
|
}
|
|
|
|
// call the plugin's "plugin()" method with arguments,
|
|
// dropping the first argument (the plugin name)
|
|
$args = func_get_args();
|
|
array_shift($args);
|
|
return call_user_func_array(
|
|
array(&$this->_resource['plugin'][$name], 'plugin'), $args
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Executes a plugin with arbitrary parameters and displays the
|
|
* result.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $name The plugin name (not including Savant2_Plugin_
|
|
* prefix).
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_NOPLUGIN code.
|
|
*
|
|
*/
|
|
|
|
function plugin($name)
|
|
{
|
|
$args = func_get_args();
|
|
|
|
$result = call_user_func_array(
|
|
array(&$this, 'splugin'),
|
|
$args
|
|
);
|
|
|
|
if ($this->isError($result)) {
|
|
return $result;
|
|
} else {
|
|
echo $result;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* PHP5 ONLY: Magic method alias to plugin().
|
|
*
|
|
* E.g., instead of $this->plugin('form', ...) you would use
|
|
* $this->form(...). You can set this to use any other Savant2 method
|
|
* by issuing, for example, setCall('splugin') to use splugin() ... which
|
|
* is really the only other sensible choice.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $func The plugin name.
|
|
*
|
|
* @param array $args Arguments passed to the plugin.
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_NOPLUGIN code.
|
|
*
|
|
*/
|
|
|
|
function __call($func, $args)
|
|
{
|
|
// add the plugin name to the args
|
|
array_unshift($args, $func);
|
|
|
|
// call the plugin() method
|
|
return call_user_func_array(
|
|
array(&$this, $this->_call),
|
|
$args
|
|
);
|
|
}
|
|
|
|
|
|
// -----------------------------------------------------------------
|
|
//
|
|
// Filters
|
|
//
|
|
// -----------------------------------------------------------------
|
|
|
|
|
|
/**
|
|
*
|
|
* Loads a filter class and instantiates it within Savant2.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $name The filter name (not including Savant2_Filter_
|
|
* prefix).
|
|
*
|
|
* @param array $conf An associative array of filter configuration
|
|
* options.
|
|
*
|
|
* @param bool $savantRef Default false. When true, sets the $Savant
|
|
* property of the filter to a reference to this Savant object.
|
|
*
|
|
* @return void
|
|
*
|
|
* @throws object An error object with a SAVANT2_ERROR_NOFILTER code.
|
|
*
|
|
*/
|
|
|
|
function loadFilter($name, $conf = array(), $savantRef = null)
|
|
{
|
|
// if no $savantRef is provided, use the default.
|
|
if (is_null($savantRef)) {
|
|
$savantRef = $this->_reference;
|
|
}
|
|
|
|
// some basic information
|
|
$class = "Savant2_Filter_$name";
|
|
$file = "$class.php";
|
|
|
|
// is it loaded?
|
|
if (! class_exists($class)) {
|
|
|
|
$result = $this->findFile('resource', $file);
|
|
if (! $result) {
|
|
return $this->error(
|
|
SAVANT2_ERROR_NOFILTER,
|
|
array('filter' => $name)
|
|
);
|
|
} else {
|
|
include_once $result;
|
|
}
|
|
}
|
|
|
|
// is it instantiated?
|
|
if (! isset($this->_resource['filter'][$name]) ||
|
|
! is_object($this->_resource['filter'][$name]) ||
|
|
! is_a($this->_resource['filter'][$name], $class)) {
|
|
|
|
// instantiate it
|
|
$this->_resource['filter'][$name] = new $class($conf);
|
|
|
|
// add a Savant reference if requested
|
|
if ($savantRef) {
|
|
$this->_resource['filter'][$name]->Savant =& $this;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Unloads one or more filters from Savant2.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string|array $name The filter name (not including Savant2_Filter_
|
|
* prefix). If null, unloads all filters; if a string, unloads that one
|
|
* filter; if an array, unloads all filters named as values in the array.
|
|
*
|
|
* @return void
|
|
*
|
|
*/
|
|
|
|
function unloadFilter($name = null)
|
|
{
|
|
if (is_null($name)) {
|
|
$this->_resource['filter'] = array();
|
|
} else {
|
|
settype($name, 'array');
|
|
foreach ($name as $key) {
|
|
if (isset($this->_resource['filter'][$key])) {
|
|
unset($this->_resource['filter'][$key]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Apply all loaded filters, in order, to text.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $text The text to which filters should be applied.
|
|
* If null, sets the text to $this->_output.
|
|
*
|
|
* @return string The text after being passed through all loded
|
|
* filters.
|
|
*
|
|
*/
|
|
|
|
function applyFilters($text = null)
|
|
{
|
|
// set to output text if no text specified
|
|
if (is_null($text)) {
|
|
$text = $this->_output;
|
|
}
|
|
|
|
// get the list of filter names...
|
|
$filter = array_keys($this->_resource['filter']);
|
|
|
|
// ... and apply them each in turn.
|
|
foreach ($filter as $name) {
|
|
$this->_resource['filter'][$name]->filter($text);
|
|
}
|
|
|
|
// done
|
|
return $text;
|
|
}
|
|
|
|
|
|
// -----------------------------------------------------------------
|
|
//
|
|
// Error handling
|
|
//
|
|
// -----------------------------------------------------------------
|
|
|
|
|
|
/**
|
|
*
|
|
* Returns an error object.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param int $code A SAVANT2_ERROR_* constant.
|
|
*
|
|
* @param array $info An array of error-specific information.
|
|
*
|
|
* @return object An error object of the type specified by
|
|
* $this->_error.
|
|
*
|
|
*/
|
|
|
|
function &error($code, $info = array())
|
|
{
|
|
// the error config array
|
|
$conf = array(
|
|
'code' => $code,
|
|
'text' => 'Savant2: ',
|
|
'info' => (array) $info
|
|
);
|
|
|
|
// set an error message from the globals
|
|
if (isset($GLOBALS['_SAVANT2']['error'][$code])) {
|
|
$conf['text'] .= $GLOBALS['_SAVANT2']['error'][$code];
|
|
} else {
|
|
$conf['text'] .= '???';
|
|
}
|
|
|
|
// set up the error class name
|
|
if ($this->_error) {
|
|
$class = 'Savant2_Error_' . $this->_error;
|
|
} else {
|
|
$class = 'Savant2_Error';
|
|
}
|
|
|
|
// set up the error class file name
|
|
$file = $class . '.php';
|
|
|
|
// is it loaded?
|
|
if (! class_exists($class)) {
|
|
|
|
// find the error class
|
|
$result = $this->findFile('resource', $file);
|
|
if (! $result) {
|
|
// could not find the custom error class, revert to
|
|
// Savant_Error base class.
|
|
$class = 'Savant2_Error';
|
|
$result = dirname(__FILE__) . '/Savant2/Error.php';
|
|
}
|
|
|
|
// include the error class
|
|
include_once $result;
|
|
}
|
|
|
|
// instantiate and return the error class
|
|
$err = new $class($conf);
|
|
return $err;
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* Tests if an object is of the Savant2_Error class.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param object &$obj The object to be tested.
|
|
*
|
|
* @return boolean True if $obj is an error object of the type
|
|
* Savant2_Error, or is a subclass that Savant2_Error. False if not.
|
|
*
|
|
*/
|
|
|
|
function isError(&$obj)
|
|
{
|
|
if (is_object($obj)) {
|
|
if (is_a($obj, 'Savant2_Error') ||
|
|
is_subclass_of($obj, 'Savant2_Error')) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|
|
?>
|