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File: libs/smarty/sysplugins/smarty_internal_compilebase.php

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File: libs/smarty/sysplugins/smarty_internal_compilebase.php
Role: Auxiliary script
Content type: text/plain
Description: smarty lib
Class: MVC 4 Dummies
Web development PHP MVC framework
Author: By
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Date: 7 years ago
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<?php
/**
 * Smarty Internal Plugin CompileBase
 *
 * @package Smarty
 * @subpackage Compiler
 * @author Uwe Tews
 */

/**
 * This class does extend all internal compile plugins
 *
 * @package Smarty
 * @subpackage Compiler
 */
abstract class Smarty_Internal_CompileBase
{
   
/**
     * Array of names of required attribute required by tag
     *
     * @var array
     */
   
public $required_attributes = array();
   
/**
     * Array of names of optional attribute required by tag
     * use array('_any') if there is no restriction of attributes names
     *
     * @var array
     */
   
public $optional_attributes = array();
   
/**
     * Shorttag attribute order defined by its names
     *
     * @var array
     */
   
public $shorttag_order = array();
   
/**
     * Array of names of valid option flags
     *
     * @var array
     */
   
public $option_flags = array('nocache');

   
/**
     * This function checks if the attributes passed are valid
     * The attributes passed for the tag to compile are checked against the list of required and
     * optional attributes. Required attributes must be present. Optional attributes are check against
     * the corresponding list. The keyword '_any' specifies that any attribute will be accepted
     * as valid
     *
     * @param object $compiler compiler object
     * @param array $attributes attributes applied to the tag
     *
     * @return array of mapped attributes for further processing
     */
   
public function getAttributes($compiler, $attributes)
    {
       
$_indexed_attr = array();
       
// loop over attributes
       
foreach ($attributes as $key => $mixed) {
           
// shorthand ?
           
if (!is_array($mixed)) {
               
// option flag ?
               
if (in_array(trim($mixed, '\'"'), $this->option_flags)) {
                   
$_indexed_attr[trim($mixed, '\'"')] = true;
                   
// shorthand attribute ?
               
} elseif (isset($this->shorttag_order[$key])) {
                   
$_indexed_attr[$this->shorttag_order[$key]] = $mixed;
                } else {
                   
// too many shorthands
                   
$compiler->trigger_template_error('too many shorthand attributes', $compiler->lex->taglineno);
                }
               
// named attribute
           
} else {
               
$kv = each($mixed);
               
// option flag?
               
if (in_array($kv['key'], $this->option_flags)) {
                    if (
is_bool($kv['value'])) {
                       
$_indexed_attr[$kv['key']] = $kv['value'];
                    } elseif (
is_string($kv['value']) && in_array(trim($kv['value'], '\'"'), array('true', 'false'))) {
                        if (
trim($kv['value']) == 'true') {
                           
$_indexed_attr[$kv['key']] = true;
                        } else {
                           
$_indexed_attr[$kv['key']] = false;
                        }
                    } elseif (
is_numeric($kv['value']) && in_array($kv['value'], array(0, 1))) {
                        if (
$kv['value'] == 1) {
                           
$_indexed_attr[$kv['key']] = true;
                        } else {
                           
$_indexed_attr[$kv['key']] = false;
                        }
                    } else {
                       
$compiler->trigger_template_error("illegal value of option flag \"{$kv['key']}\"", $compiler->lex->taglineno);
                    }
                   
// must be named attribute
               
} else {
                   
reset($mixed);
                   
$_indexed_attr[key($mixed)] = $mixed[key($mixed)];
                }
            }
        }
       
// check if all required attributes present
       
foreach ($this->required_attributes as $attr) {
            if (!
array_key_exists($attr, $_indexed_attr)) {
               
$compiler->trigger_template_error("missing \"" . $attr . "\" attribute", $compiler->lex->taglineno);
            }
        }
       
// check for not allowed attributes
       
if ($this->optional_attributes != array('_any')) {
           
$tmp_array = array_merge($this->required_attributes, $this->optional_attributes, $this->option_flags);
            foreach (
$_indexed_attr as $key => $dummy) {
                if (!
in_array($key, $tmp_array) && $key !== 0) {
                   
$compiler->trigger_template_error("unexpected \"" . $key . "\" attribute", $compiler->lex->taglineno);
                }
            }
        }
       
// default 'false' for all option flags not set
       
foreach ($this->option_flags as $flag) {
            if (!isset(
$_indexed_attr[$flag])) {
               
$_indexed_attr[$flag] = false;
            }
        }

        return
$_indexed_attr;
    }

   
/**
     * Push opening tag name on stack
     * Optionally additional data can be saved on stack
     *
     * @param object $compiler compiler object
     * @param string $openTag the opening tag's name
     * @param mixed $data optional data saved
     */
   
public function openTag($compiler, $openTag, $data = null)
    {
       
array_push($compiler->_tag_stack, array($openTag, $data));
    }

   
/**
     * Pop closing tag
     * Raise an error if this stack-top doesn't match with expected opening tags
     *
     * @param object $compiler compiler object
     * @param array|string $expectedTag the expected opening tag names
     *
     * @return mixed any type the opening tag's name or saved data
     */
   
public function closeTag($compiler, $expectedTag)
    {
        if (
count($compiler->_tag_stack) > 0) {
           
// get stacked info
           
list($_openTag, $_data) = array_pop($compiler->_tag_stack);
           
// open tag must match with the expected ones
           
if (in_array($_openTag, (array) $expectedTag)) {
                if (
is_null($_data)) {
                   
// return opening tag
                   
return $_openTag;
                } else {
                   
// return restored data
                   
return $_data;
                }
            }
           
// wrong nesting of tags
           
$compiler->trigger_template_error("unclosed {$compiler->smarty->left_delimiter}" . $_openTag . "{$compiler->smarty->right_delimiter} tag");

            return;
        }
       
// wrong nesting of tags
       
$compiler->trigger_template_error("unexpected closing tag", $compiler->lex->taglineno);

        return;
    }
}