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ThinkTemplate.class.php 31KB

    <?php // +---------------------------------------------------------------------- // | ThinkPHP [ WE CAN DO IT JUST THINK IT ] // +---------------------------------------------------------------------- // | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved. // +---------------------------------------------------------------------- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) // +---------------------------------------------------------------------- // | Author: liu21st <liu21st@gmail.com> // +---------------------------------------------------------------------- // $Id: ThinkTemplate.class.php 2791 2012-02-29 10:08:57Z liu21st $ /** +------------------------------------------------------------------------------ * ThinkPHP内置模板引擎类 * 支持XML标签和普通标签的模板解析 * 编译型模板引擎 支持动态缓存 +------------------------------------------------------------------------------ * @category Think * @package Think * @subpackage Template * @author liu21st <liu21st@gmail.com> * @version $Id: ThinkTemplate.class.php 2791 2012-02-29 10:08:57Z liu21st $ +------------------------------------------------------------------------------ */ class ThinkTemplate { // 模板页面中引入的标签库列表 protected $tagLib = array(); // 当前模板文件 protected $templateFile = ''; // 模板变量 public $tVar = array(); public $config = array(); private $literal = array(); /** +---------------------------------------------------------- * 取得模板实例对象 * 静态方法 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @return ThinkTemplate +---------------------------------------------------------- */ static public function getInstance() { return get_instance_of(__CLASS__); } /** +---------------------------------------------------------- * 架构函数 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param array $config 模板引擎配置数组 +---------------------------------------------------------- */ public function __construct(){ $this->config['cache_path'] = C('CACHE_PATH'); $this->config['template_suffix'] = C('TMPL_TEMPLATE_SUFFIX'); $this->config['cache_suffix'] = C('TMPL_CACHFILE_SUFFIX'); $this->config['tmpl_cache'] = C('TMPL_CACHE_ON'); $this->config['cache_time'] = C('TMPL_CACHE_TIME'); $this->config['taglib_begin'] = $this->stripPreg(C('TAGLIB_BEGIN')); $this->config['taglib_end'] = $this->stripPreg(C('TAGLIB_END')); $this->config['tmpl_begin'] = $this->stripPreg(C('TMPL_L_DELIM')); $this->config['tmpl_end'] = $this->stripPreg(C('TMPL_R_DELIM')); $this->config['default_tmpl'] = C('TEMPLATE_NAME'); $this->config['layout_item'] = C('TMPL_LAYOUT_ITEM'); } private function stripPreg($str) { return str_replace(array('{','}','(',')','|','[',']'),array('\{','\}','\(','\)','\|','\[','\]'),$str); } // 模板变量获取和设置 public function get($name) { if(isset($this->tVar[$name])) return $this->tVar[$name]; else return false; } public function set($name,$value) { $this->tVar[$name]= $value; } // 加载模板 public function fetch($templateFile,$templateVar) { $this->tVar = $templateVar; $templateCacheFile = $this->loadTemplate($templateFile); // 模板阵列变量分解成为独立变量 extract($templateVar, EXTR_OVERWRITE); //载入模版缓存文件 include $templateCacheFile; } /** +---------------------------------------------------------- * 加载主模板并缓存 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $tmplTemplateFile 模板文件 +---------------------------------------------------------- * @return string +---------------------------------------------------------- * @throws ThinkExecption +---------------------------------------------------------- */ public function loadTemplate ($tmplTemplateFile) { $this->templateFile = $tmplTemplateFile; // 根据模版文件名定位缓存文件 $tmplCacheFile = $this->config['cache_path'].md5($tmplTemplateFile).$this->config['cache_suffix']; // 读取模板文件内容 $tmplContent = file_get_contents($tmplTemplateFile); // 判断是否启用布局 if(C('LAYOUT_ON')) { if(false !== strpos($tmplContent,'{__NOLAYOUT__}')) { // 可以单独定义不使用布局 $tmplContent = str_replace('{__NOLAYOUT__}','',$tmplContent); }else{ // 替换布局的主体内容 $layoutFile = THEME_PATH.C('LAYOUT_NAME').$this->config['template_suffix']; $tmplContent = str_replace($this->config['layout_item'],$tmplContent,file_get_contents($layoutFile)); } } //编译模板内容 $tmplContent = $this->compiler($tmplContent); // 检测分组目录 if(!is_dir($this->config['cache_path'])) mk_dir($this->config['cache_path']); //重写Cache文件 if( false === file_put_contents($tmplCacheFile,trim($tmplContent))) throw_exception(L('_CACHE_WRITE_ERROR_').':'.$tmplCacheFile); return $tmplCacheFile; } /** +---------------------------------------------------------- * 编译模板文件内容 +---------------------------------------------------------- * @access protected +---------------------------------------------------------- * @param mixed $tmplContent 模板内容 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ protected function compiler($tmplContent) { //模板解析 $tmplContent = $this->parse($tmplContent); // 还原被替换的Literal标签 $tmplContent = preg_replace('/<!--###literal(\d)###-->/eis',"\$this->restoreLiteral('\\1')",$tmplContent); // 添加安全代码 $tmplContent = '<?php if (!defined(\'THINK_PATH\')) exit();?>'.$tmplContent; if(C('TMPL_STRIP_SPACE')) { /* 去除html空格与换行 */ $find = array("~>\s+<~","~>(\s+\n|\r)~"); $replace = array('><','>'); $tmplContent = preg_replace($find, $replace, $tmplContent); } // 优化生成的php代码 $tmplContent = str_replace('?><?php','',$tmplContent); return strip_whitespace($tmplContent); } /** +---------------------------------------------------------- * 模板解析入口 * 支持普通标签和TagLib解析 支持自定义标签库 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $content 要解析的模板内容 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ public function parse($content) { // 内容为空不解析 if(empty($content)) return ''; $begin = $this->config['taglib_begin']; $end = $this->config['taglib_end']; // 首先替换literal标签内容 $content = preg_replace('/'.$begin.'literal'.$end.'(.*?)'.$begin.'\/literal'.$end.'/eis',"\$this->parseLiteral('\\1')",$content); // 检查include语法 $content = $this->parseInclude($content); // 检查PHP语法 $content = $this->parsePhp($content); // 获取需要引入的标签库列表 // 标签库只需要定义一次,允许引入多个一次 // 一般放在文件的最前面 // 格式:<taglib name="html,mytag..." /> // 当TAGLIB_LOAD配置为true时才会进行检测 if(C('TAGLIB_LOAD')) { $this->getIncludeTagLib($content); if(!empty($this->tagLib)) { // 对导入的TagLib进行解析 foreach($this->tagLib as $tagLibName) { $this->parseTagLib($tagLibName,$content); } } } // 预先加载的标签库 无需在每个模板中使用taglib标签加载 但必须使用标签库XML前缀 if(C('TAGLIB_PRE_LOAD')) { $tagLibs = explode(',',C('TAGLIB_PRE_LOAD')); foreach ($tagLibs as $tag){ $this->parseTagLib($tag,$content); } } // 内置标签库 无需使用taglib标签导入就可以使用 并且不需使用标签库XML前缀 $tagLibs = explode(',',C('TAGLIB_BUILD_IN')); foreach ($tagLibs as $tag){ $this->parseTagLib($tag,$content,true); } //解析普通模板标签 {tagName} $content = preg_replace('/('.$this->config['tmpl_begin'].')(\S.+?)('.$this->config['tmpl_end'].')/eis',"\$this->parseTag('\\2')",$content); return $content; } // 检查PHP语法 protected function parsePhp($content) { // PHP语法检查 if(C('TMPL_DENY_PHP') && false !== strpos($content,'<?php')) { throw_exception(L('_NOT_ALLOW_PHP_')); }elseif(ini_get('short_open_tag')){ // 开启短标签的情况要将<?标签用echo方式输出 否则无法正常输出xml标识 $content = preg_replace('/(<\?(?!php|=|$))/i', '<?php echo \'\\1\'; ?>'."\n", $content ); } return $content; } // 解析模板中的布局标签 protected function parseLayout($content) { // 读取模板中的布局标签 $find = preg_match('/'.$this->config['taglib_begin'].'layout\s(.+?)\s*?\/'.$this->config['taglib_end'].'/is',$content,$matches); if($find) { //替换Layout标签 $content = str_replace($matches[0],'',$content); //解析Layout标签 $layout = $matches[1]; $xml = '<tpl><tag '.$layout.' /></tpl>'; $xml = simplexml_load_string($xml); if(!$xml) throw_exception(L('_XML_TAG_ERROR_')); $xml = (array)($xml->tag->attributes()); $array = array_change_key_case($xml['@attributes']); if(!C('LAYOUT_ON') || C('LAYOUT_NAME') !=$array['name'] ) { // 读取布局模板 $layoutFile = THEME_PATH.$array['name'].$this->config['template_suffix']; $replace = isset($array['replace'])?$array['replace']:$this->config['layout_item']; // 替换布局的主体内容 $content = str_replace($replace,$content,file_get_contents($layoutFile)); } } return $content; } // 解析模板中的include标签 protected function parseInclude($content) { // 解析布局 $content = $this->parseLayout($content); // 读取模板中的布局标签 $find = preg_match_all('/'.$this->config['taglib_begin'].'include\s(.+?)\s*?\/'.$this->config['taglib_end'].'/is',$content,$matches); if($find) { for($i=0;$i<$find;$i++) { $include = $matches[1][$i]; $xml = '<tpl><tag '.$include.' /></tpl>'; $xml = simplexml_load_string($xml); if(!$xml) throw_exception(L('_XML_TAG_ERROR_')); $xml = (array)($xml->tag->attributes()); $array = array_change_key_case($xml['@attributes']); $file = $array['file']; unset($array['file']); $content = str_replace($matches[0][$i],$this->parseIncludeItem($file,$array),$content); } } return $content; } /** +---------------------------------------------------------- * 替换页面中的literal标签 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $content 模板内容 +---------------------------------------------------------- * @return string|false +---------------------------------------------------------- */ private function parseLiteral($content) { if(trim($content)=='') return ''; $content = stripslashes($content); $i = count($this->literal); $parseStr = "<!--###literal{$i}###-->"; $this->literal[$i] = $content; return $parseStr; } /** +---------------------------------------------------------- * 还原被替换的literal标签 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $tag literal标签序号 +---------------------------------------------------------- * @return string|false +---------------------------------------------------------- */ private function restoreLiteral($tag) { // 还原literal标签 $parseStr = $this->literal[$tag]; // 销毁literal记录 unset($this->literal[$tag]); return $parseStr; } /** +---------------------------------------------------------- * 搜索模板页面中包含的TagLib库 * 并返回列表 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $content 模板内容 +---------------------------------------------------------- * @return string|false +---------------------------------------------------------- */ public function getIncludeTagLib(& $content) { //搜索是否有TagLib标签 $find = preg_match('/'.$this->config['taglib_begin'].'taglib\s(.+?)(\s*?)\/'.$this->config['taglib_end'].'\W/is',$content,$matches); if($find) { //替换TagLib标签 $content = str_replace($matches[0],'',$content); //解析TagLib标签 $tagLibs = $matches[1]; $xml = '<tpl><tag '.$tagLibs.' /></tpl>'; $xml = simplexml_load_string($xml); if(!$xml) throw_exception(L('_XML_TAG_ERROR_')); $xml = (array)($xml->tag->attributes()); $array = array_change_key_case($xml['@attributes']); $this->tagLib = explode(',',$array['name']); } return; } /** +---------------------------------------------------------- * TagLib库解析 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $tagLib 要解析的标签库 * @param string $content 要解析的模板内容 * @param boolen $hide 是否隐藏标签库前缀 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ public function parseTagLib($tagLib,&$content,$hide=false) { $begin = $this->config['taglib_begin']; $end = $this->config['taglib_end']; $className = 'TagLib'.ucwords($tagLib); if(!import($className)) { if(is_file(EXTEND_PATH.'Driver/TagLib/'.$className.'.class.php')) { // 扩展标签库优先识别 $file = EXTEND_PATH.'Driver/TagLib/'.$className.'.class.php'; }else{ // 系统目录下面的标签库 $file = CORE_PATH.'Driver/TagLib/'.$className.'.class.php'; } require_cache($file); } $tLib = Think::instance($className); foreach ($tLib->getTags() as $name=>$val){ $tags = array($name); if(isset($val['alias'])) {// 别名设置 $tags = explode(',',$val['alias']); $tags[] = $name; } $level = isset($val['level'])?$val['level']:1; $closeTag = isset($val['close'])?$val['close']:true; foreach ($tags as $tag){ $parseTag = !$hide? $tagLib.':'.$tag: $tag;// 实际要解析的标签名称 if(!method_exists($tLib,'_'.$tag)) { // 别名可以无需定义解析方法 $tag = $name; } $n1 = empty($val['attr'])?'(\s*?)':'\s(.*?)'; if (!$closeTag){ $patterns = '/'.$begin.$parseTag.$n1.'\/(\s*?)'.$end.'/eis'; $replacement = "\$this->parseXmlTag('$tagLib','$tag','$1','')"; $content = preg_replace($patterns, $replacement,$content); }else{ $patterns = '/'.$begin.$parseTag.$n1.$end.'(.*?)'.$begin.'\/'.$parseTag.'(\s*?)'.$end.'/eis'; $replacement = "\$this->parseXmlTag('$tagLib','$tag','$1','$2')"; for($i=0;$i<$level;$i++) $content=preg_replace($patterns,$replacement,$content); } } } } /** +---------------------------------------------------------- * 解析标签库的标签 * 需要调用对应的标签库文件解析类 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $tagLib 标签库名称 * @param string $tag 标签名 * @param string $attr 标签属性 * @param string $content 标签内容 +---------------------------------------------------------- * @return string|false +---------------------------------------------------------- */ public function parseXmlTag($tagLib,$tag,$attr,$content) { //if (MAGIC_QUOTES_GPC) { $attr = stripslashes($attr); $content = stripslashes($content); //} if(ini_get('magic_quotes_sybase')) $attr = str_replace('\"','\'',$attr); $tLib = Think::instance('TagLib'.ucwords(strtolower($tagLib))); $parse = '_'.$tag; $content = trim($content); return $tLib->$parse($attr,$content); } /** +---------------------------------------------------------- * 模板标签解析 * 格式: {TagName:args [|content] } +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $tagStr 标签内容 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ public function parseTag($tagStr){ //if (MAGIC_QUOTES_GPC) { $tagStr = stripslashes($tagStr); //} //还原非模板标签 if(preg_match('/^[\s|\d]/is',$tagStr)) //过滤空格和数字打头的标签 return C('TMPL_L_DELIM') . $tagStr .C('TMPL_R_DELIM'); $flag = substr($tagStr,0,1); $name = substr($tagStr,1); if('$' == $flag){ //解析模板变量 格式 {$varName} return $this->parseVar($name); }elseif('-' == $flag || '+'== $flag){ // 输出计算 return '<?php echo '.$flag.$name.';?>'; }elseif(':' == $flag){ // 输出某个函数的结果 return '<?php echo '.$name.';?>'; }elseif('~' == $flag){ // 执行某个函数 return '<?php '.$name.';?>'; }elseif(substr($tagStr,0,2)=='//' || (substr($tagStr,0,2)=='/*' && substr($tagStr,-2)=='*/')){ //注释标签 return ''; } // 未识别的标签直接返回 return C('TMPL_L_DELIM') . $tagStr .C('TMPL_R_DELIM'); } /** +---------------------------------------------------------- * 模板变量解析,支持使用函数 * 格式: {$varname|function1|function2=arg1,arg2} +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $varStr 变量数据 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ public function parseVar($varStr){ $varStr = trim($varStr); static $_varParseList = array(); //如果已经解析过该变量字串,则直接返回变量值 if(isset($_varParseList[$varStr])) return $_varParseList[$varStr]; $parseStr =''; $varExists = true; if(!empty($varStr)){ $varArray = explode('|',$varStr); //取得变量名称 $var = array_shift($varArray); //非法变量过滤 不允许在变量里面使用 -> //TODO:还需要继续完善 if(preg_match('/->/is',$var)) return ''; if('Think.' == substr($var,0,6)){ // 所有以Think.打头的以特殊变量对待 无需模板赋值就可以输出 $name = $this->parseThinkVar($var); }elseif( false !== strpos($var,'.')) { //支持 {$var.property} $vars = explode('.',$var); $var = array_shift($vars); switch(strtolower(C('TMPL_VAR_IDENTIFY'))) { case 'array': // 识别为数组 $name = '$'.$var; foreach ($vars as $key=>$val) $name .= '["'.$val.'"]'; break; case 'obj': // 识别为对象 $name = '$'.$var; foreach ($vars as $key=>$val) $name .= '->'.$val; break; default: // 自动判断数组或对象 只支持二维 $name = 'is_array($'.$var.')?$'.$var.'["'.$vars[0].'"]:$'.$var.'->'.$vars[0]; } }elseif(false !==strpos($var,':')){ //支持 {$var:property} 方式输出对象的属性 $vars = explode(':',$var); $var = str_replace(':','->',$var); $name = "$".$var; $var = $vars[0]; }elseif(false !== strpos($var,'[')) { //支持 {$var['key']} 方式输出数组 $name = "$".$var; preg_match('/(.+?)\[(.+?)\]/is',$var,$match); $var = $match[1]; }else { $name = "$$var"; } //对变量使用函数 if(count($varArray)>0) $name = $this->parseVarFunction($name,$varArray); $parseStr = '<?php echo ('.$name.'); ?>'; } $_varParseList[$varStr] = $parseStr; return $parseStr; } /** +---------------------------------------------------------- * 对模板变量使用函数 * 格式 {$varname|function1|function2=arg1,arg2} +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $name 变量名 * @param array $varArray 函数列表 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ public function parseVarFunction($name,$varArray){ //对变量使用函数 $length = count($varArray); //取得模板禁止使用函数列表 $template_deny_funs = explode(',',C('TMPL_DENY_FUNC_LIST')); for($i=0;$i<$length ;$i++ ){ $args = explode('=',$varArray[$i],2); //模板函数过滤 $fun = strtolower(trim($args[0])); switch($fun) { case 'default': // 特殊模板函数 $name = '('.$name.')?('.$name.'):'.$args[1]; break; default: // 通用模板函数 if(!in_array($fun,$template_deny_funs)){ if(isset($args[1])){ if(strstr($args[1],'###')){ $args[1] = str_replace('###',$name,$args[1]); $name = "$fun($args[1])"; }else{ $name = "$fun($name,$args[1])"; } }else if(!empty($args[0])){ $name = "$fun($name)"; } } } } return $name; } /** +---------------------------------------------------------- * 特殊模板变量解析 * 格式 以 $Think. 打头的变量属于特殊模板变量 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $varStr 变量字符串 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ public function parseThinkVar($varStr){ $vars = explode('.',$varStr); $vars[1] = strtoupper(trim($vars[1])); $parseStr = ''; if(count($vars)>=3){ $vars[2] = trim($vars[2]); switch($vars[1]){ case 'SERVER': $parseStr = '$_SERVER[\''.strtoupper($vars[2]).'\']';break; case 'GET': $parseStr = '$_GET[\''.$vars[2].'\']';break; case 'POST': $parseStr = '$_POST[\''.$vars[2].'\']';break; case 'COOKIE': if(isset($vars[3])) { $parseStr = '$_COOKIE[\''.$vars[2].'\'][\''.$vars[3].'\']'; }else{ $parseStr = '$_COOKIE[\''.$vars[2].'\']'; }break; case 'SESSION': if(isset($vars[3])) { $parseStr = '$_SESSION[\''.$vars[2].'\'][\''.$vars[3].'\']'; }else{ $parseStr = '$_SESSION[\''.$vars[2].'\']'; } break; case 'ENV': $parseStr = '$_ENV[\''.strtoupper($vars[2]).'\']';break; case 'REQUEST': $parseStr = '$_REQUEST[\''.$vars[2].'\']';break; case 'CONST': $parseStr = strtoupper($vars[2]);break; case 'LANG': $parseStr = 'L("'.$vars[2].'")';break; case 'CONFIG': if(isset($vars[3])) { $vars[2] .= '.'.$vars[3]; } $parseStr = 'C("'.$vars[2].'")';break; default:break; } }else if(count($vars)==2){ switch($vars[1]){ case 'NOW': $parseStr = "date('Y-m-d g:i a',time())"; break; case 'VERSION': $parseStr = 'THINK_VERSION'; break; case 'TEMPLATE': $parseStr = "'".$this->templateFile."'";//'C("TEMPLATE_NAME")'; break; case 'LDELIM': $parseStr = 'C("TMPL_L_DELIM")'; break; case 'RDELIM': $parseStr = 'C("TMPL_R_DELIM")'; break; default: if(defined($vars[1])) $parseStr = $vars[1]; } } return $parseStr; } /** +---------------------------------------------------------- * 加载公共模板并缓存 和当前模板在同一路径,否则使用相对路径 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $tmplPublicName 公共模板文件名 * @param array $vars 要传递的变量列表 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ protected function parseIncludeItem($tmplPublicName,$vars=array()){ if(substr($tmplPublicName,0,1)=='$') //支持加载变量文件名 $tmplPublicName = $this->get(substr($tmplPublicName,1)); if(false === strpos($tmplPublicName,$this->config['template_suffix'])) { // 解析规则为 模板主题:模块:操作 不支持 跨项目和跨分组调用 $path = explode(':',$tmplPublicName); $action = array_pop($path); $module = !empty($path)?array_pop($path):MODULE_NAME; if(!empty($path)) {// 设置模板主题 $path = dirname(THEME_PATH).'/'.array_pop($path).'/'; }else{ $path = THEME_PATH; } $depr = defined('GROUP_NAME')?C('TMPL_FILE_DEPR'):'/'; $tmplPublicName = $path.$module.$depr.$action.$this->config['template_suffix']; } // 获取模板文件内容 $parseStr = file_get_contents($tmplPublicName); foreach ($vars as $key=>$val) { $parseStr = str_replace('['.$key.']',$val,$parseStr); } //再次对包含文件进行模板分析 return $this->parseInclude($parseStr); } }