Volist标签 bug改善

mod 有点小问题，第103行
见下面代码
// +----------------------------------------------------------------------
// | 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
// +----------------------------------------------------------------------

defined('THINK_PATH') or exit();
/**
* CX标签库解析类
* @category Think
* @package Think
* @subpackage Driver.Taglib
* @author liu21st
*/
class TagLibCx extends TagLib {

// 标签定义
protected $tags = array(
// 标签定义： attr 属性列表 close 是否闭合（0 或者1 默认1） alias 标签别名 level 嵌套层次
'php' => array(),
'volist' => array('attr'=>'name,id,offset,length,key,mod','level'=>3,'alias'=>'iterate'),
'foreach' => array('attr'=>'name,item,key','level'=>3),
'if' => array('attr'=>'condition','level'=>2),
'elseif' => array('attr'=>'condition','close'=>0),
'else' => array('attr'=>'','close'=>0),
'switch' => array('attr'=>'name','level'=>2),
'case' => array('attr'=>'value,break'),
'default' => array('attr'=>'','close'=>0),
'compare' => array('attr'=>'name,value,type','level'=>3,'alias'=>'eq,equal,notequal,neq,gt,lt,egt,elt,heq,nheq'),
'range' => array('attr'=>'name,value,type','level'=>3,'alias'=>'in,notin,between,notbetween'),
'empty' => array('attr'=>'name','level'=>3),
'notempty' => array('attr'=>'name','level'=>3),
'present' => array('attr'=>'name','level'=>3),
'notpresent'=> array('attr'=>'name','level'=>3),
'defined' => array('attr'=>'name','level'=>3),
'notdefined'=> array('attr'=>'name','level'=>3),
'import' => array('attr'=>'file,href,type,value,basepath','close'=>0,'alias'=>'load,css,js'),
'assign' => array('attr'=>'name,value','close'=>0),
'define' => array('attr'=>'name,value','close'=>0),
'for' => array('attr'=>'start,end,name,comparison,step', 'level'=>3),
);

/**
* php标签解析
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _php($attr,$content) {
$parseStr = '';
return $parseStr;
}

/**
* volist标签解析 循环输出数据集
* 格式：
*
* {user.username}
* {user.email}
*
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string|void
*/
public function _volist($attr,$content) {
static $_iterateParseCache = array();
//如果已经解析过，则直接返回变量值
$cacheIterateId = md5($attr.$content);
if(isset($_iterateParseCache[$cacheIterateId]))
return $_iterateParseCache[$cacheIterateId];
$tag = $this->parseXmlAttr($attr,'volist');
$name = $tag['name'];
$id = $tag['id'];
$empty = isset($tag['empty'])?$tag['empty']:'';
$key = !empty($tag['key'])?$tag['key']:'i';
$mod = isset($tag['mod'])?$tag['mod']:'2';
// 允许使用函数设定数据集 {$vo.name}
$parseStr = ' if(0===strpos($name,':')) {
$parseStr .= '$_result='.substr($name,1).';';
$name = '$_result';
}else{
$name = $this->autoBuildVar($name);
}
$parseStr .= 'if(is_array('.$name.')): $'.$key.' = 0;';
if(isset($tag['length']) && '' !=$tag['length'] ) {
$parseStr .= ' $__LIST__ = array_slice('.$name.','.$tag['offset'].','.$tag['length'].',true);';
}elseif(isset($tag['offset']) && '' !=$tag['offset']){
$parseStr .= ' $__LIST__ = array_slice('.$name.','.$tag['offset'].',null,true);';
}else{
$parseStr .= ' $__LIST__ = '.$name.';';
}
$parseStr .= 'if( count($__LIST__)==0 ) : echo "'.$empty.'" ;';
$parseStr .= 'else: ';
$parseStr .= 'foreach($__LIST__ as $key=>$'.$id.'): ';
//改善后
$parseStr .= '++$'.$key.';';
$parseStr .= '$mod = ($'.$key.' % '.$mod.' );';
$parseStr .= '?>';
/*改善前
$parseStr .= '$mod = ($'.$key.' % '.$mod.' );';
$parseStr .= '++$'.$key.';?>';*/

$parseStr .= $this->tpl->parse($content);
$parseStr .= '';
$_iterateParseCache[$cacheIterateId] = $parseStr;

if(!empty($parseStr)) {
return $parseStr;
}
return ;
}

/**
* foreach标签解析 循环输出数据集
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string|void
*/
public function _foreach($attr,$content) {
static $_iterateParseCache = array();
//如果已经解析过，则直接返回变量值
$cacheIterateId = md5($attr.$content);
if(isset($_iterateParseCache[$cacheIterateId]))
return $_iterateParseCache[$cacheIterateId];
$tag = $this->parseXmlAttr($attr,'foreach');
$name = $tag['name'];
$item = $tag['item'];
$key = !empty($tag['key'])?$tag['key']:'key';
$name = $this->autoBuildVar($name);
$parseStr = '$'.$item.'): ?>';
$parseStr .= $this->tpl->parse($content);
$parseStr .= '';
$_iterateParseCache[$cacheIterateId] = $parseStr;
if(!empty($parseStr)) {
return $parseStr;
}
return ;
}

/**
* if标签解析
* 格式：
*
*
*
*
* 表达式支持 eq neq gt egt lt elt == > >= * @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _if($attr,$content) {
$tag = $this->parseXmlAttr($attr,'if');
$condition = $this->parseCondition($tag['condition']);
$parseStr = ''.$content.'';
return $parseStr;
}

/**
* else标签解析
* 格式：见if标签
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _elseif($attr,$content) {
$tag = $this->parseXmlAttr($attr,'elseif');
$condition = $this->parseCondition($tag['condition']);
$parseStr = '';
return $parseStr;
}

/**
* else标签解析
* @access public
* @param string $attr 标签属性
* @return string
*/
public function _else($attr) {
$parseStr = '';
return $parseStr;
}

/**
* switch标签解析
* 格式：
*
* 1
* 2
* other
*
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _switch($attr,$content) {
$tag = $this->parseXmlAttr($attr,'switch');
$name = $tag['name'];
$varArray = explode('|',$name);
$name = array_shift($varArray);
$name = $this->autoBuildVar($name);
if(count($varArray)>0)
$name = $this->tpl->parseVarFunction($name,$varArray);
$parseStr = ''.$content.'';
return $parseStr;
}

/**
* case标签解析 需要配合switch才有效
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _case($attr,$content) {
$tag = $this->parseXmlAttr($attr,'case');
$value = $tag['value'];
if('$' == substr($value,0,1)) {
$varArray = explode('|',$value);
$value = array_shift($varArray);
$value = $this->autoBuildVar(substr($value,1));
if(count($varArray)>0)
$value = $this->tpl->parseVarFunction($value,$varArray);
$value = 'case '.$value.': ';
}elseif(strpos($value,'|')){
$values = explode('|',$value);
$value = '';
foreach ($values as $val){
$value .= 'case "'.addslashes($val).'": ';
}
}else{
$value = 'case "'.$value.'": ';
}
$parseStr = ''.$content;
$isBreak = isset($tag['break']) ? $tag['break'] : '';
if('' ==$isBreak || $isBreak) {
$parseStr .= '';
}
return $parseStr;
}

/**
* default标签解析 需要配合switch才有效
* 使用： ddfdf
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _default($attr) {
$parseStr = '';
return $parseStr;
}

/**
* compare标签解析
* 用于值的比较 支持 eq neq gt lt egt elt heq nheq 默认是eq
* 格式： content
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _compare($attr,$content,$type='eq') {
$tag = $this->parseXmlAttr($attr,'compare');
$name = $tag['name'];
$value = $tag['value'];
$type = isset($tag['type'])?$tag['type']:$type;
$type = $this->parseCondition(' '.$type.' ');
$varArray = explode('|',$name);
$name = array_shift($varArray);
$name = $this->autoBuildVar($name);
if(count($varArray)>0)
$name = $this->tpl->parseVarFunction($name,$varArray);
if('$' == substr($value,0,1)) {
$value = $this->autoBuildVar(substr($value,1));
}else {
$value = '"'.$value.'"';
}
$parseStr = ''.$content.'';
return $parseStr;
}

public function _eq($attr,$content) {
return $this->_compare($attr,$content,'eq');
}

public function _equal($attr,$content) {
return $this->_compare($attr,$content,'eq');
}

public function _neq($attr,$content) {
return $this->_compare($attr,$content,'neq');
}

public function _notequal($attr,$content) {
return $this->_compare($attr,$content,'neq');
}

public function _gt($attr,$content) {
return $this->_compare($attr,$content,'gt');
}

public function _lt($attr,$content) {
return $this->_compare($attr,$content,'lt');
}

public function _egt($attr,$content) {
return $this->_compare($attr,$content,'egt');
}

public function _elt($attr,$content) {
return $this->_compare($attr,$content,'elt');
}

public function _heq($attr,$content) {
return $this->_compare($attr,$content,'heq');
}

public function _nheq($attr,$content) {
return $this->_compare($attr,$content,'nheq');
}

/**
* range标签解析
* 如果某个变量存在于某个范围 则输出内容 type= in 表示在范围内 否则表示在范围外
* 格式： content
* example: content
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @param string $type 比较类型
* @return string
*/
public function _range($attr,$content,$type='in') {
$tag = $this->parseXmlAttr($attr,'range');
$name = $tag['name'];
$value = $tag['value'];
$varArray = explode('|',$name);
$name = array_shift($varArray);
$name = $this->autoBuildVar($name);
if(count($varArray)>0)
$name = $this->tpl->parseVarFunction($name,$varArray);

$type = isset($tag['type'])?$tag['type']:$type;

if('$' == substr($value,0,1)) {
$value = $this->autoBuildVar(substr($value,1));
$str = 'is_array('.$value.')?'.$value.':explode(\',\','.$value.')';
}else{
$value = '"'.$value.'"';
$str = 'explode(\',\','.$value.')';
}
if($type=='between') {
$parseStr = '= $_RANGE_VAR_[0] && '.$name.''.$content.'';
}elseif($type=='notbetween'){
$parseStr = '$_RANGE_VAR_[1]):?>'.$content.'';
}else{
$fun = ($type == 'in')? 'in_array' : '!in_array';
$parseStr = ''.$content.'';
}
return $parseStr;
}

// range标签的别名 用于in判断
public function _in($attr,$content) {
return $this->_range($attr,$content,'in');
}

// range标签的别名 用于notin判断
public function _notin($attr,$content) {
return $this->_range($attr,$content,'notin');
}

public function _between($attr,$content){
return $this->_range($attr,$content,'between');
}

public function _notbetween($attr,$content){
return $this->_range($attr,$content,'notbetween');
}

/**
* present标签解析
* 如果某个变量已经设置 则输出内容
* 格式： content
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _present($attr,$content) {
$tag = $this->parseXmlAttr($attr,'present');
$name = $tag['name'];
$name = $this->autoBuildVar($name);
$parseStr = ''.$content.'';
return $parseStr;
}

/**
* notpresent标签解析
* 如果某个变量没有设置，则输出内容
* 格式： content
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _notpresent($attr,$content) {
$tag = $this->parseXmlAttr($attr,'notpresent');
$name = $tag['name'];
$name = $this->autoBuildVar($name);
$parseStr = ''.$content.'';
return $parseStr;
}

/**
* empty标签解析
* 如果某个变量为empty 则输出内容
* 格式： content
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _empty($attr,$content) {
$tag = $this->parseXmlAttr($attr,'empty');
$name = $tag['name'];
$name = $this->autoBuildVar($name);
$parseStr = ''.$content.'';
return $parseStr;
}

public function _notempty($attr,$content) {
$tag = $this->parseXmlAttr($attr,'notempty');
$name = $tag['name'];
$name = $this->autoBuildVar($name);
$parseStr = ''.$content.'';
return $parseStr;
}

/**
* 判断是否已经定义了该常量
* 已定义
* @param $attr
* @param $content
* @return string
*/
public function _defined($attr,$content) {
$tag = $this->parseXmlAttr($attr,'defined');
$name = $tag['name'];
$parseStr = ''.$content.'';
return $parseStr;
}

public function _notdefined($attr,$content) {
$tag = $this->parseXmlAttr($attr,'_notdefined');
$name = $tag['name'];
$parseStr = ''.$content.'';
return $parseStr;
}

/**
* import 标签解析
*
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @param boolean $isFile 是否文件方式
* @param string $type 类型
* @return string
*/
public function _import($attr,$content,$isFile=false,$type='') {
$tag = $this->parseXmlAttr($attr,'import');
$file = isset($tag['file'])?$tag['file']:$tag['href'];
$parseStr = '';
$endStr = '';
// 判断是否存在加载条件 允许使用函数判断(默认为isset)
if (isset($tag['value'])) {
$varArray = explode('|',$tag['value']);
$name = array_shift($varArray);
$name = $this->autoBuildVar($name);
if (!empty($varArray))
$name = $this->tpl->parseVarFunction($name,$varArray);
else
$name = 'isset('.$name.')';
$parseStr .= '';
$endStr = '';
}
if($isFile) {
// 根据文件名后缀自动识别
$type = $type?$type:(!empty($tag['type'])?strtolower($tag['type']):null);
// 文件方式导入
$array = explode(',',$file);
foreach ($array as $val){
if (!$type || isset($reset)) {
$type = $reset = strtolower(substr(strrchr($val, '.'),1));
}
switch($type) {
case 'js':
$parseStr .= '';
break;
case 'css':
$parseStr .= '';
break;
case 'php':
$parseStr .= '';
break;
}
}
}else{
// 命名空间导入模式 默认是js
$type = $type?$type:(!empty($tag['type'])?strtolower($tag['type']):'js');
$basepath = !empty($tag['basepath'])?$tag['basepath']:__ROOT__.'/Public';
// 命名空间方式导入外部文件
$array = explode(',',$file);
foreach ($array as $val){
list($val,$version) = explode('?',$val);
switch($type) {
case 'js':
$parseStr .= '';
break;
case 'css':
$parseStr .= '';
break;
case 'php':
$parseStr .= '';
break;
}
}
}
return $parseStr.$endStr;
}

// import别名 采用文件方式加载(要使用命名空间必须用import) 例如
public function _load($attr,$content) {
return $this->_import($attr,$content,true);
}

// import别名使用 导入css文件
public function _css($attr,$content) {
return $this->_import($attr,$content,true,'css');
}

// import别名使用 导入js文件
public function _js($attr,$content) {
return $this->_import($attr,$content,true,'js');
}

/**
* assign标签解析
* 在模板中给某个变量赋值 支持变量赋值
* 格式：
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _assign($attr,$content) {
$tag = $this->parseXmlAttr($attr,'assign');
$name = $this->autoBuildVar($tag['name']);
if('$'==substr($tag['value'],0,1)) {
$value = $this->autoBuildVar(substr($tag['value'],1));
}else{
$value = '\''.$tag['value']. '\'';
}
$parseStr = '';
return $parseStr;
}

/**
* define标签解析
* 在模板中定义常量 支持变量赋值
* 格式：
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _define($attr,$content) {
$tag = $this->parseXmlAttr($attr,'define');
$name = '\''.$tag['name']. '\'';
if('$'==substr($tag['value'],0,1)) {
$value = $this->autoBuildVar(substr($tag['value'],1));
}else{
$value = '\''.$tag['value']. '\'';
}
$parseStr = '';
return $parseStr;
}

/**
* for标签解析
* 格式：
* @access public
* @param string $attr 标签属性
* @param string $content 标签内容
* @return string
*/
public function _for($attr, $content){
//设置默认值
$start = 0;
$end = 0;
$step = 1;
$comparison = 'lt';
$name = 'i';
$rand = rand(); //添加随机数，防止嵌套变量冲突
//获取属性
foreach ($this->parseXmlAttr($attr, 'for') as $key => $value){
$value = trim($value);
if(':'==substr($value,0,1))
$value = substr($value,1);
elseif('$'==substr($value,0,1))
$value = $this->autoBuildVar(substr($value,1));
switch ($key){
case 'start':
$start = $value; break;
case 'end' :
$end = $value; break;
case 'step':
$step = $value; break;
case 'comparison':
$comparison = $value; break;
case 'name':
$name = $value; break;
}
}

$parseStr = ' $parseStr .= 'for($'.$name.'=$__FOR_START_'.$rand.'__;'.$this->parseCondition('$'.$name.' '.$comparison.' $__FOR_END_'.$rand.'__').';$'.$name.'+='.$step.'){ ?>';
$parseStr .= $content;
$parseStr .= '';
return $parseStr;
}

}

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