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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2002 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: nobody <nobody@localhost> |
// +----------------------------------------------------------------------+
//
// $Id: Assign.php 334846 2014-09-12 04:50:56Z alan_k $
//
// Provider for Assign API ( Eg. $flexy->assign(...) )
//
define('HTML_TEMPLATE_FLEXY_ASSIGN_ERROR_INVALIDARGS', -100);
class HTML_Template_Flexy_Assign {
/**
* The variables stored in the Assigner
*
* @var array
* @access public
*/
var $variables = array();
/**
* The references stored in the Assigner
*
* @var array
* @access public
*/
var $references = array();
/**
*
* Assigns a token-name and value to $this->_token_vars for use in a
* template.
*
* There are three valid ways to assign values to a template.
*
* Form 1: $args[0] is a string and $args[1] is mixed. This means
* $args[0] is a token name and $args[1] is the token value (which
* allows objects, arrays, strings, numbers, or anything else).
* $args[1] can be null, which means the corresponding token value in
* the template will also be null.
*
* Form 2: $args[0] is an array and $args[1] is not set. Assign a
* series of tokens where the key is the token name, and the value is
* token value.
*
* Form 3: $args[0] is an object and $args[1] is not set. Assigns
* copies of all object variables (properties) to tokens; the token
* name and value is a copy of each object property and value.
*
* @access public
*
* @param string|array|object $args[0] This param can be a string, an
* array, or an object. If $args[0] is a string, it is the name of a
* variable in the template. If $args[0] is an array, it must be an
* associative array of key-value pairs where the key is a variable
* name in the template and the value is the value for that variable
* in the template. If $args[0] is an object, copies of its
* properties will be assigned to the template.
*
* @param mixed $args[1] If $args[0] is an array or object, $args[1]
* should not be set. Otherwise, a copy of $args[1] is assigned to a
* template variable named after $args[0].
*
* @return bool|PEAR_Error Boolean true if all assignments were
* committed, or a PEAR_Error object if there was an error.
*
* @throws SAVANT_ERROR_ASSIGN Unknown reason for error, probably
* because you passed $args[1] when $args[0] is an array or object.
*
* @author Paul M. Jones <pmjones@ciaweb.net>
* @see assignRef()
*
* @see assignObject()
*
*/
function assign($args)
{
// in Form 1, $args[0] is a string name and $args[1] is mixed.
// in Form 2, $args[0] is an associative array.
// in Form 3, $args[0] is an object.
$count = count($args);
// -------------------------------------------------------------
//
// Now we assign variable copies.
//
// form 1 (string name and mixed value)
// don't check isset() on $args[1] becuase a 'null' is not set,
// and we might want to pass a null.
if (is_string($args[0]) && $count > 1) {
if (isset($this->references[$args[0]])) {
unset($this->references[$args[0]]);
}
// keep a copy in the token vars array
$this->variables[$args[0]] = $args[1];
// done!
return true;
}
// form 2 (assoc array)
if (is_array($args[0]) && $count == 1) {
foreach ($args[0] as $key=>$val) {
$this->assign(array($key, $val));
}
// done!
return true;
}
// form 3 (object props)
if (is_object($args[0]) && $count == 1) {
// get the object properties
$data = get_object_vars($args[0]);
foreach ($data as $key=>$val) {
$this->assign(array($key, $val));
}
// done!
return true;
}
// -------------------------------------------------------------
//
// Final error catch. We should not have gotten to this point.
//
return HTML_Template_Flexy::staticRaiseError(
"invalid type sent to assign, ". print_r($args,true),
HTML_TEMPLATE_FLEXY_ASSIGN_ERROR_INVALIDARGS
);
}
/**
*
* Assign a token by reference. This allows you change variable
* values within the template and have those changes reflected back
* at the calling logic script. Works as with form 2 of assign().
*
* @access public
*
* @param string $name The template token-name for the reference.
*
* @param mixed &$ref The variable passed by-reference.
*
* @return bool|PEAR_Error Boolean true on success, or a PEAR_Error
* on failure.
*
* @throws SAVANT_ERROR_ASSIGN_REF Unknown reason for error.
*
* @see assign()
* @author Paul M. Jones <pmjones@ciaweb.net>
* @see assignObject()
*
*/
function assignRef($name, &$ref)
{
// look for the proper case: name and variable
if (is_string($name) && isset($ref)) {
if (isset($this->variables[$name])) {
unset($this->variables[$name]);
}
//
// assign the token as a reference
$this->references[$name] =& $ref;
// done!
return true;
}
// final error catch
return HTML_Template_Flexy::staticRaiseError(
"invalid type sent to assignRef, ". print_r($name,true),
HTML_TEMPLATE_FLEXY_ASSIGN_ERROR_INVALIDARGS
);
}
}
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