template.php | searchcode

/common/system/template.php

http://lazycms.googlecode.com/
PHP | 569 lines | 310 code | 8 blank | 251 comment | 53 complexity | 3e9dff841d2de860a1c0a51f5c25f9d2 MD5 | raw file
Possible License(s): LGPL-3.0, LGPL-2.1

<?php
/**
 * +---------------------------------------------------------------------------+
 * | LL                             LLLL   LL     L   LLLL               LLLL  |
 * | LL                            LL   L  LLL   LL  LL   L             LL  LL |
 * | LL      LLLL   LLLLL  LL  LL  LL      LLLL LLL  LL         LL  LL      LL |
 * | LL         LL     LL  LL  LL  LL      L LLL LL  LLLLL      LL  LL     LL  |
 * | LL      LLLLL    LL    LLLL   LL      L  L  LL   LLLLL     LL  LL    LL   |
 * | LL     LL  LL   LL     LLLL   LL      L     LL      LL      LLLL    LL    |
 * | LL     LL  LL  LL       LL    LL   L  L     LL  L   LL      LLLL   LL     |
 * | LLLLLL  LLLLL  LLLLL    LL     LLLL   L     LL   LLLL        LL    LLLLLL |
 * |                        LL                                                 |
 * |                        LL                                                 |
 * +---------------------------------------------------------------------------+
 * | Copyright (C) 2007-2010 LazyCMS.com All rights reserved.                  |
 * +---------------------------------------------------------------------------+
 * | LazyCMS is free software. See LICENSE for copyright notices and details.  |
 * +---------------------------------------------------------------------------+
 */
defined('COM_PATH') or die('Restricted access!');
/**
 * ?????
 *
 * @author  Lukin <my@lukin.cn>
 * @version $Id: template.php 760 2011-03-10 16:10:56Z mylukin $
 */
class Template {
    var $type     = 'LC_TEMPLATE';
    var $_vars    = array();
    var $_args    = array();
    var $_plugins = array();

    function __construct(){
        global $LC_tpl_plugins;
        if (is_array($LC_tpl_plugins))
            $this->_plugins = $LC_tpl_plugins;
    }

    function Template() {
        $args = func_get_args();
		call_user_func_array( array(&$this, '__construct'), $args );
    }
    /**
     * ??html??
     *
     * @param  $html
     * @return mixed
     */
    function load($html) {
        // ?? include ??
        $tags = array(); $base = ABS_PATH.'/'.system_themes_path().'/';
        if (preg_match_all('/\{(inc|include)[^\}]*file=([^\}]*)\/\}/isU',$html,$r)) {
            $tags = $r[2];
            foreach ($tags as $i=>$tag) {
                $file = trim($tag,'"\' ');
                $html = str_replace($r[0][$i],$this->load_file($base.$file),$html);
            }
        }
        $html = preg_replace('/<title>/isU',"<meta name=\"generator\" content=\"LazyCMS ".LAZY_VERSION."\" />\n\${0}",$html, 1);
        // ??????css?js??
        $html = preg_replace('/(<(((script|link|img|input|embed|object|base|area|map|table|td|th|tr).+?(src|href|background))|((param).+?(src|value)))=([^\/]+?))((images|scripts)\/.{0,}?\>)/i','${1}'.ROOT.system_themes_path().'/${10}',$html);
        return $html;
    }
    /**
     * ????
     *
     * @param  $file
     * @return mixed
     */
    function load_file($file) {
        return is_file($file) ? $this->load(file_get_contents($file)) : '';
    }
    /**
     * ????
     *
     * @param string $tag_name
     * @param string $tag
     * @param array $block ????????????
     * @param array $vars  ?????
     * @return mixed
     */
    function apply_plugins($tag_name,$tag,$block=null,$vars=null) {
        $result = null; $tag_name = strtolower($tag_name);
        foreach ((array)$this->_plugins as $func) {
            $result = call_user_func($func,$tag_name,$tag,$block,$vars);
            if (null !== $result) break;
        }
        return $result;
    }
    /**
     * ??????
     *
     * @param string $type
     * @return void
     */
    function clean(){
        $this->_vars = array();
    }
    /**
     * ????
     *
     * @param string|array $key
     * @param mixed $val
     * @return bool
     */
    function set_var($key, $val=null) {
        // ?key???
        if (empty($key)) return true;
        // ????
    	if (is_array($key)) {
    		foreach ($key as $k=>$v) {
                if (empty($k)) continue;
                $this->_vars[strtolower($k)] = $this->encode($v);
    		}
        }
        // ????
        else {
            $this->_vars[strtolower($key)] = $this->encode($val);
        }
        return true;
    }
    /**
     * ??????
     *
     * @return array
     */
    function get_vars() {
        return $this->_vars;
    }
    /**
     * ????
     *
     * @param string $key
     * @return array
     */
    function get_var($key) {
        if (strpos($key, '.') !== false) {
            $val  = $this->_vars;
            $keys = explode('.', $key);
            foreach ($keys as $k) $val = $val[$k];
        } else {
            $key = strtolower($key);
            $val = isset($this->_vars[$key]) ? $this->_vars[$key] : null;
        }
        return $val;
    }
    /**
     * ????????
     *
     * @param  $html
     * @return array
     */
    function get_blocks($html){
        $result = array();
        // ?????????
        if (preg_match_all('/\{[\w+\:\-]+\b[^\}]*(?<!\/)\}|\{\/[\w+\:\-]+\}/isU',$html,$r)) {
            $content  = $html;
            $position = $tag_len = $id = 0;
            $matches  = $r[0];
            $stacks   = array();
            $result   = array();
            // ????
            foreach($matches as $match) {
                // ????????
                if ($index = strpos($content,$match)) {
                    // ???????????
                    $position += $index + $tag_len;
                    // ????
                    $tag_len = strlen($match);
                    // ??
                    if (preg_match('/\{([\w+\:\-]+)\b[^\}]*\}/isU',$match,$tag)) {
                        $stacks[] = array(
                            'id'    => ++$id,
                            'name'  => $tag[1],
                            'start' => $position,
                            'inner_start' => $position + $tag_len,
                        );
                    }
                    // ??
                    else {
                        $data           = array_pop($stacks);
                        $parent         = array_pop(array_slice($stacks,count($stacks)-1,1));
                        $data['offset'] = $data['inner_start'] - $data['start'];
                        $data['length'] = $position - $data['inner_start'];
                        $data['end']    = $position + $tag_len;
                        $data['pid']    = isset($parent['id']) ? $parent['id'] : 0;
                        $data['tag']    = substr($html,$data['start'],$data['end']-$data['start']);

                        unset($data['start'],$data['inner_start'],$data['end']);


                        $result[$data['id']] = $data;
                        
                    }
                    // ??????
                    $content = substr($content,$index + $tag_len);
                }
            }
            // ???????????????????????????
            $un = array();
            foreach ($result as $id=>$item) {
                if ($item['pid']) {
                    $result[$item['pid']]['sub'][$id] = &$result[$id];
                    $un[] = $id;
                }
            }
            foreach($un as $v) unset($result[$v]);
        }
        return $result;
    }

    /**
     * ???????
     *
     * @param string $html
     * @param string $tag_name
     * @param string $type
     * @return array|null
     */
    function get_block($html,$tag_name,$type=null) {
        $result = null;
        // ???????
        $blocks = $this->get_blocks($html);
        // ??????
        foreach ($blocks as $block) {
            // type value
            $type_val = $this->get_attr($block['tag'],'type');
            // ????????
            if (instr(strtolower($block['name']),$tag_name) && ($type_val==$type || $type==null)) {
                $result = $block; break;
            }
        }
        return $result;
    }
    /**
     * ????????
     *
     * @param  $block
     * @return string
     */
    function get_block_inner($block) {
        return substr($block['tag'], $block['offset'], $block['length']);
    }
    /**
     * ?????
     *
     * @param  $html
     * @return mixed
     */
    function process_blocks($html) {
        // ???????
        $blocks = $this->get_blocks($html);
        // ??????
        foreach ($blocks as $block) {
            $html = str_replace($block['tag'], $this->apply_plugins($block['name'], $block['tag'], $block, $this->_vars), $html);
        }
        return $html;
    }
    /**
     * ?????
     *
     * @param string $html
     * @param array $subs
     * @return string
     */
    function parse_subs($html, $subs) {
        foreach($subs as $block) {
            $result = $this->apply_plugins($block['name'], $block['tag'], $block, $this->_vars);
            $guid = guid($block['tag']);
            $html = str_replace($block['tag'], '{$'.$guid.'}' , $html);
            $this->set_var($guid, $result);
        }
        return $html;
    }
    /**
     * ????
     *
     * @param string $html
     * @return mixed
     */
    function process_vars($html){
        if (preg_match_all('/\{\$([\w\.\-]++)\b[^\}]*+\}/',$html,$r)) {
            $tags = $r[1];
            foreach ($r[0] as $k => $tag) {
                // ??????
                $value = $this->apply_plugins('$'.$tags[$k], $tag, null, $this->_vars);
                // ????
                if (null === $value) {
                    $value = $this->get_var($tags[$k]);
                }
                // ??????
                $value = $this->process_attr($value, $tag);
                $html  = str_replace($tag, $value, $html);
            }
        }
        return $this->decode($html);
    }
    /**
     * ????
     *
     * @param string $html
     * @param array $block
     * @return mixed|string
     */
    function parse($html, $block=null) {
        if ($block && isset($block['sub']))
            $html = $this->parse_subs($html, $block['sub']);
        
        $html = $this->process_blocks($html);
        $html = $this->process_vars($html);
        return $html;
    }
    /**
     * ??????
     *
     * @param  $value    ????
     * @param  $tag      ???????
     * @return array|mixed|string
     */
    function process_attr($value,$tag) {
        $result = $value;
        // size
        $size = $this->get_attr($tag,'size');
        if ($size && validate_is($size,VALIDATE_IS_NUMERIC)) {
            if (intval(mb_strlen($value,'UTF-8')) > intval($size)) {
                $result = mb_substr($value, 0, $size, 'UTF-8') . '...';
            } else{
                $result = $value;
            }
        }
        // datemode
        $date = $this->get_attr($tag,'mode');
        if (strlen($date) > 0 && (is_numeric($value) || $value = strtotime($value))) {
            switch (strval($date)) {
                case '0':
                    $result = date('Y-n-j G:i:s', $value);
                    break;
                case '1':
                    $result = date('Y-m-d H:i:s', $value);
                    break;
                default:
                    $result = date($date, $value);
                    break;
            }
        }
        // code
        $code = $this->get_attr($tag,'code');
        if (is_scalar($result) && strlen($result) > 0 && $code) {
            $code = strtolower($code);
            switch ($code) {
                case 'javascript': case 'js':
                    $result = sprintf('document.writeln("%s");',str_replace(array("\r", "\n"), array('', '\n'), addslashes($result)));
                    break;
                case 'xmlencode': case 'xml':
                    $result = xmlencode($result);
                    break;
                case 'urlencode': case 'url':
                    $result = rawurlencode($result);
                    break;
                case 'htmlencode': case 'html': 
                    $result = esc_html($result);
                    break;
            }
        }
        // thumb
        $width  = $this->get_attr($tag,'width');
        $height = $this->get_attr($tag,'height');
        if (is_scalar($value) && is_numeric($width) && is_numeric($height)) {
            $result = image_thumb(ABS_PATH.$value, $width, $height, basename($value, '.' . pathinfo($value, PATHINFO_EXTENSION)) . '_' . $width . 'x' . $height);
            if ($result) {
                $result = substr($result, strlen(ABS_PATH));
            } else {
                $result = $value;
            }
        }
        // apply
        $func = $this->get_attr($tag,'func');
        if (strlen($func) > 0 && $func) {
            if (stripos($func,'@me') !== false) {
                $func = preg_replace("/'@me'|\"@me\"|@me/isU",'$result',$func);
            }
            $result = eval('return '.$func.';');
        }
        return $result;
    }
    /**
     * ???????
     *
     * @param string $tag
     * @param string $attr
     * @param string $separator
     * @return string
     */
    function get_attr($tag,$attr,$separator='=') {
        $value = mid($tag, $attr.$separator.'"','"');
        if ($value === null)
            $value = mid($tag, $attr.$separator."'","'");
        return $value;
    }
    /**
     * ????
     *
     * @param  $str
     * @return mixed
     */
    function encode($str) {
        return is_array($str) ? array_map(array(&$this,'encode'), $str) : str_replace(array(chr(36),chr(123),chr(125)), array('&#36;','&#123;','&#125;'), $str);
    }
    /**
     * ????
     *
     * @param  $str
     * @return mixed
     */
    function decode($str) {
        return str_replace(array('&#36;','&#123;','&#125;'), array(chr(36),chr(123),chr(125)), $str);
    }
}
/**
 * ???????
 *
 * @param string $type
 * @return Template
 */
function &tpl_init($type=null) {
    global $LC_templates;
    if ($type === null) $type = 'LC_TEMPLATE';
    if (!isset($LC_templates[$type])) {
        $LC_templates[$type] = new Template();
        $LC_templates[$type]->type = $type;
    }
    return $LC_templates[$type];
}
/**
 * ??????
 *
 * @param object $tpl
 * @return Template
 */
function &_tpl_get_object($tpl=null) {
    global $LC_templates;
    if ($tpl && is_object($tpl) && get_class($tpl)=='Template') {
        return $LC_templates[$tpl->type];
    }
    else
        return tpl_init();
}
/**
 * ??????
 *
 * @param object $tpl
 * @return void
 */
function tpl_clean($tpl=null) {
    $tpl = _tpl_get_object($tpl);
    return $tpl->clean();
}
/**
 * ????
 *
 * @param string|mixed $key
 * @param mixed $val
 * @param object $tpl
 * @return bool
 */
function tpl_set_var($key, $val=null, $tpl=null) {
    if (is_array($key)) $tpl = &$val;
    $tpl = _tpl_get_object($tpl);
    return $tpl->set_var($key, $val);
}
/**
 * ????
 *
 * @param string $key
 * @param object $tpl
 * @return array
 */
function tpl_get_var($key, $tpl=null) {
    $tpl = _tpl_get_object($tpl);
    return $tpl->get_var($key);
}
/**
 * ??????
 *
 * @param object $tpl
 * @return array
 */
function tpl_get_vars($tpl=null) {
    $tpl = _tpl_get_object($tpl);
    return $tpl->get_vars();
}
/**
 * ????
 *
 * @param string $html
 * @param array $block
 * @param object $tpl
 * @return mixed|string
 */
function tpl_parse($html, $block=null, $tpl=null) {
    if (is_object($block) && get_class($block)=='Template') {
        $tpl = $block; $block = null;
    }
    $tpl = _tpl_get_object($tpl);
    return $tpl->parse($html, $block);
}
/**
 * ??????
 *
 * @param string $file
 * @return mixed
 */
function tpl_loadfile($file) {
    return tpl_init()->load_file($file);
}
/**
 * ????
 *
 * @param  $func
 * @return void
 */
function tpl_add_plugin($funcs) {
    global $LC_tpl_plugins; $LC_tpl_plugins = empty($LC_tpl_plugins) ? array() : $LC_tpl_plugins;
    if (is_array($funcs)) {
        foreach ($funcs as $func) {
            if (!in_array($func, $LC_tpl_plugins)) {
                $LC_tpl_plugins[] = $func;
            }
        }
        return true;
    } else {
        if (!in_array($funcs, $LC_tpl_plugins)) {
            $LC_tpl_plugins[] = $funcs;
            return true;
        }
    }
    return false;
}
/**
 * ???????
 *
 * @param string $html
 * @param string $tag_name
 * @param string $type
 * @return array|null
 */
function tpl_get_block($html,$tag_name,$type=null) {
    return tpl_init()->get_block($html,$tag_name,$type);
}
/**
 * ???????
 *
 * @param array $block
 * @return string
 */
function tpl_get_block_inner($block) {
    return tpl_init()->get_block_inner($block);
}
/**
 * ????
 *
 * @param string $tag
 * @param string $attr
 * @param string $separator
 * @return string
 */
function tpl_get_attr($tag, $attr, $separator='=') {
    return tpl_init()->get_attr($tag, $attr,$separator);
}