<?php  if(!defined('DEDEINC')) exit('dedecms');
/**
 * 字符串小助手
 *
 * @version        $Id: string.helper.php 5 14:24 2010年7月5日Z tianya $
 * @package        DedeCMS.Helpers
 * @copyright      Copyright (c) 2007 - 2020, DesDev, Inc.
 * @license        http://help.dedecms.com/usersguide/license.html
 * @link           http://www.dedecms.com
 */
//拼音的缓冲数组
$pinyins = Array();

/**
 *  中文截取2，单字节截取模式
 *  如果是request的内容，必须使用这个函数
 *
 * @access    public
 * @param     string  $str  需要截取的字符串
 * @param     int  $slen  截取的长度
 * @param     int  $startdd  开始标记处
 * @return    string
 */
if ( ! function_exists('cn_substrR'))
{
    function cn_substrR($str, $slen, $startdd=0)
    {
        $str = cn_substr(stripslashes($str), $slen, $startdd);
        return addslashes($str);
    }
}

/**
 *  中文截取2，单字节截取模式
 *
 * @access    public
 * @param     string  $str  需要截取的字符串
 * @param     int  $slen  截取的长度
 * @param     int  $startdd  开始标记处
 * @return    string
 */
if ( ! function_exists('cn_substr'))
{
    function cn_substr($str, $slen, $startdd=0)
    {
        global $cfg_soft_lang;
        if($cfg_soft_lang=='utf-8')
        {
            return cn_substr_utf8($str, $slen, $startdd);
        }
        $restr = '';
        $c = '';
        $str_len = strlen($str);
        if($str_len < $startdd+1)
        {
            return '';
        }
        if($str_len < $startdd + $slen || $slen==0)
        {
            $slen = $str_len - $startdd;
        }
        $enddd = $startdd + $slen - 1;
        for($i=0;$i<$str_len;$i++)
        {
            if($startdd==0)
            {
                $restr .= $c;
            }
            else if($i > $startdd)
            {
                $restr .= $c;
            }

            if(ord($str[$i])>0x80)
            {
                if($str_len>$i+1)
                {
                    $c = $str[$i].$str[$i+1];
                }
                $i++;
            }
            else
            {
                $c = $str[$i];
            }

            if($i >= $enddd)
            {
                if(strlen($restr)+strlen($c)>$slen)
                {
                    break;
                }
                else
                {
                    $restr .= $c;
                    break;
                }
            }
        }
        return $restr;
    }
}

/**
 *  utf-8中文截取，单字节截取模式
 *
 * @access    public
 * @param     string  $str  需要截取的字符串
 * @param     int  $slen  截取的长度
 * @param     int  $startdd  开始标记处
 * @return    string
 */
if ( ! function_exists('cn_substr_utf8'))
{
    function cn_substr_utf8($str, $length, $start=0)
    {
        if(strlen($str) < $start+1)
        {
            return '';
        }
        preg_match_all("/./su", $str, $ar);
        $str = '';
        $tstr = '';

        //为了兼容mysql4.1以下版本,与数据库varchar一致,这里使用按字节截取
        for($i=0; isset($ar[0][$i]); $i++)
        {
            if(strlen($tstr) < $start)
            {
                $tstr .= $ar[0][$i];
            }
            else
            {
                if(strlen($str) < $length + strlen($ar[0][$i]) )
                {
                    $str .= $ar[0][$i];
                }
                else
                {
                    break;
                }
            }
        }
        return $str;
    }
}

/**
 *  HTML转换为文本
 *
 * @param    string  $str 需要转换的字符串
 * @param    string  $r   如果$r=0直接返回内容,否则需要使用反斜线引用字符串
 * @return   string
 */
if ( ! function_exists('Html2Text'))
{
    function Html2Text($str,$r=0)
    {
        if(!function_exists('SpHtml2Text'))
        {
            require_once(DEDEINC."/inc/inc_fun_funString.php");
        }
        if($r==0)
        {
            return SpHtml2Text($str);
        }
        else
        {
            $str = SpHtml2Text(stripslashes($str));
            return addslashes($str);
        }
    }
}


/**
 *  文本转HTML
 *
 * @param    string  $txt 需要转换的文本内容
 * @return   string
 */
if ( ! function_exists('Text2Html'))
{
    function Text2Html($txt)
    {
        $txt = str_replace("  ", "　", $txt);
        $txt = str_replace("<", "&lt;", $txt);
        $txt = str_replace(">", "&gt;", $txt);
        $txt = preg_replace("/[\r\n]{1,}/isU", "<br/>\r\n", $txt);
        return $txt;
    }
}

/**
 *  获取半角字符
 *
 * @param     string  $fnum  数字字符串
 * @return    string
 */
if ( ! function_exists('GetAlabNum'))
{
    function GetAlabNum($fnum)
    {
        $nums = array("０","１","２","３","４","５","６","７","８","９");
        //$fnums = "0123456789";
        $fnums = array("0","1","2","3","4","5","6","7","8","9");
        $fnum = str_replace($nums, $fnums, $fnum);
        $fnum = preg_replace("/[^0-9\.-]/", '', $fnum);
        if($fnum=='')
        {
            $fnum=0;
        }
        return $fnum;
    }
}

/**
 *  获取拼音以gbk编码为准
 *
 * @access    public
 * @param     string  $str     字符串信息
 * @param     int     $ishead  是否取头字母
 * @param     int     $isclose 是否关闭字符串资源
 * @return    string
 */
if ( ! function_exists('GetPinyin'))
{
    function GetPinyin($str, $ishead=0, $isclose=1)
    {
        global $cfg_soft_lang;
        if(!function_exists('SpGetPinyin'))
        {
            //全局函数仅是inc_fun_funAdmin.php文件中函数的一个映射
            require_once(DEDEINC."/inc/inc_fun_funAdmin.php");
        }
        if($cfg_soft_lang=='utf-8')
        {
            return SpGetPinyin(utf82gb($str), $ishead, $isclose);
        }
        else
        {
            return SpGetPinyin($str, $ishead, $isclose);
        }
    }
}
/**
 *  将实体html代码转换成标准html代码（兼容php4）
 *
 * @access    public
 * @param     string  $str     字符串信息
 * @param     long    $options  替换的字符集
 * @return    string
 */

if ( ! function_exists('htmlspecialchars_decode'))
{
        function htmlspecialchars_decode($str, $options=ENT_COMPAT) {
                $trans = get_html_translation_table(HTML_SPECIALCHARS, $options);

                $decode = ARRAY();
                foreach ($trans AS $char=>$entity) {
                        $decode[$entity] = $char;
                }

                $str = strtr($str, $decode);

                return $str;
        }
}

if ( ! function_exists('ubb'))
{
	function ubb($Text) {
		  $Text=trim($Text);
		  //$Text=htmlspecialchars($Text);
		  //$Text=ereg_replace("\n","<br>",$Text);
		  $Text=preg_replace("/\\t/is","  ",$Text);
		  $Text=preg_replace("/\[hr\]/is","<hr>",$Text);
		  $Text=preg_replace("/\[separator\]/is","<br/>",$Text);
		  $Text=preg_replace("/\[h1\](.+?)\[\/h1\]/is","<h1>\\1</h1>",$Text);
		  $Text=preg_replace("/\[h2\](.+?)\[\/h2\]/is","<h2>\\1</h2>",$Text);
		  $Text=preg_replace("/\[h3\](.+?)\[\/h3\]/is","<h3>\\1</h3>",$Text);
		  $Text=preg_replace("/\[h4\](.+?)\[\/h4\]/is","<h4>\\1</h4>",$Text);
		  $Text=preg_replace("/\[h5\](.+?)\[\/h5\]/is","<h5>\\1</h5>",$Text);
		  $Text=preg_replace("/\[h6\](.+?)\[\/h6\]/is","<h6>\\1</h6>",$Text);
		  $Text=preg_replace("/\[center\](.+?)\[\/center\]/is","<center>\\1</center>",$Text);
		  //$Text=preg_replace("/\[url=([^\[]*)\](.+?)\[\/url\]/is","<a href=\\1 target='_blank'>\\2</a>",$Text);
		  $Text=preg_replace("/\[url\](.+?)\[\/url\]/is","<a href=\"\\1\" target='_blank'>\\1</a>",$Text);
		  $Text=preg_replace("/\[url=(http:\/\/.+?)\](.+?)\[\/url\]/is","<a href='\\1' target='_blank'>\\2</a>",$Text);
		  $Text=preg_replace("/\[url=(.+?)\](.+?)\[\/url\]/is","<a href=\\1>\\2</a>",$Text);
		  $Text=preg_replace("/\[img\](.+?)\[\/img\]/is","<img src=\\1>",$Text);
		  $Text=preg_replace("/\[img\s(.+?)\](.+?)\[\/img\]/is","<img \\1 src=\\2>",$Text);
		  $Text=preg_replace("/\[color=(.+?)\](.+?)\[\/color\]/is","<font color=\\1>\\2</font>",$Text);
		  $Text=preg_replace("/\[style=(.+?)\](.+?)\[\/style\]/is","<div class='\\1'>\\2</div>",$Text);
		  $Text=preg_replace("/\[size=(.+?)\](.+?)\[\/size\]/is","<font size=\\1>\\2</font>",$Text);
		  $Text=preg_replace("/\[sup\](.+?)\[\/sup\]/is","<sup>\\1</sup>",$Text);
		  $Text=preg_replace("/\[sub\](.+?)\[\/sub\]/is","<sub>\\1</sub>",$Text);
		  $Text=preg_replace("/\[pre\](.+?)\[\/pre\]/is","<pre>\\1</pre>",$Text);
          if (version_compare(PHP_VERSION, '5.5.0', '>='))
          {
              $Text=preg_replace_callback("/\[colorTxt\](.+?)\[\/colorTxt\]/is","color_txt",$Text);
          } else {
              $Text=preg_replace("/\[colorTxt\](.+?)\[\/colorTxt\]/eis","color_txt('\\1')",$Text);
          }
		  $Text=preg_replace("/\[email\](.+?)\[\/email\]/is","<a href='mailto:\\1'>\\1</a>",$Text);
		  $Text=preg_replace("/\[i\](.+?)\[\/i\]/is","<i>\\1</i>",$Text);
		  $Text=preg_replace("/\[u\](.+?)\[\/u\]/is","<u>\\1</u>",$Text);
		  $Text=preg_replace("/\[b\](.+?)\[\/b\]/is","<b>\\1</b>",$Text);
		  $Text=preg_replace("/\[quote\](.+?)\[\/quote\]/is","<blockquote>引用:<div style='border:1px solid silver;background:#EFFFDF;color:#393939;padding:5px' >\\1</div></blockquote>", $Text);
		  $Text=preg_replace("/\[sig\](.+?)\[\/sig\]/is","<div style='text-align: left; color: darkgreen; margin-left: 5%'><br><br>--------------------------<br>\\1<br>--------------------------</div>", $Text);
		  return $Text;
	}
}

if ( !function_exists('color_txt') )
{
    function color_txt($str){
        if ( is_array($str) )
        {
            $str = $str[1];
        }
        $len        = mb_strlen($str);
        $colorTxt   = '';
        for($i=0; $i<$len; $i++) {
            $colorTxt .=  '<span style="color:'.rand_color().'">'.mb_substr($str,$i,1,'utf-8').'</span>';
        }
        return $colorTxt;
    }
}

if ( !function_exists('rand_color') )
{
    function rand_color(){
        return '#'.sprintf("%02X",mt_rand(0,255)).sprintf("%02X",mt_rand(0,255)).sprintf("%02X",mt_rand(0,255));
    }
}