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Delete dedehtml2.class.php

tags/6.0.0
llgoer 6 年前
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<?php if(!defined('DEDEINC')) exit("Request Error!");
/**
* 织梦HTML解析类V1.6 PHP版
* function c____DedeHtml2();
* 这个类针对于采集程序，主要是获取某区域内的图片、超链接等信息
*
*
* @version $Id: dedehtml2.class.php 1 14:44 2010年7月6日Z tianya $
* @package DedeCMS.Libraries
* @copyright Copyright (c) 2007 - 2019, DesDev, Inc.
* @license http://help.dedecms.com/usersguide/license.html
* @link http://www.dedecms.com
*/
// ------------------------------------------------------------------------
/**
* 织梦HTML解析类V1.6 PHP版
*
* @package DedeHtml2
* @subpackage DedeCMS.Libraries
* @link http://www.dedecms.com
*/
class DedeHtml2
{
var $CAtt;
var $SourceHtml;
var $Title;
var $Medias;
var $MediaInfos;
var $Links;
var $CharSet;
var $BaseUrl;
var $BaseUrlPath;
var $Scheme;
var $HomeUrl;
var $IsHead;
var $ImgHeight;
var $ImgWidth;
var $GetLinkType;

//构造函数
function __construct()
{
$this->CAtt = '';
$this->SourceHtml = '';
$this->Title = '';
$this->Medias = Array();
$this->MediaInfos = Array();
$this->Links = Array();
$this->BaseUrl = '';
$this->BaseUrlPath = '';
$this->Scheme = 'http://';
$this->HomeUrl = '';
$this->IsHead = false;
$this->ImgHeight = 30;
$this->ImgWidth = 50;
$this->GetLinkType = 'link';
}

function DedeHtml2()
{
$this->__construct();
}

/**
* 设置HTML的内容和来源网址
*
* @access public
* @param string $html html资源
* @param string $url 地址
* @param string $linktype 连接类型
* @return void
*/
function SetSource(&$html, $url = '', $linktype='')
{
$this->__construct();
$this->CAtt = new DedeAttribute2();
$url = trim($url);
$this->SourceHtml = $html;
$this->BaseUrl = $url;
//判断文档相对于当前的路径
$urls = @parse_url($url);
$this->Scheme = $urls['scheme'] . '://';
$this->HomeUrl = $urls['host'];
$this->BaseUrlPath = $this->HomeUrl.$urls['path'];
$this->BaseUrlPath = preg_replace("/\/([^\/]*)\.(.*)$/","/",$this->BaseUrlPath);
$this->BaseUrlPath = preg_replace("/\/$/",'',$this->BaseUrlPath);
if($linktype!='')
{
$this->GetLinkType = $linktype;
}
if($html != '')
{
$this->Analyser();
}
}

/**
* 解析HTML
*
* @access private
* @return void
*/
function Analyser()
{
$cAtt = new DedeAttribute2();
$cAtt->IsTagName = false;
$c = '';
$i = 0;
$startPos = 0;
$endPos = 0;
$wt = 0;
$ht = 0;
$scriptdd = 0;
$attStr = '';
$tmpValue = '';
$tmpValue2 = '';
$tagName = '';
$hashead = 0;
$slen = strlen($this->SourceHtml);
if($this->GetLinkType=='link' || $this->GetLinkType=='')
{
$needTags = array('a');
}
if($this->GetLinkType=='media')
{
$needTags = array('img','embed','a');
$this->IsHead = true;
}
$tagbreaks = array(' ','<','>',"\r","\n","\t");
for(;isset($this->SourceHtml[$i]);$i++)
{
if($this->SourceHtml[$i]=='<')
{
$tagName = '';
$j = 0;
for($i=$i+1; isset($this->SourceHtml[$i]); $i++)
{
if($j>10)
{
break;
}
$j++;
if( in_array($this->SourceHtml[$i],$tagbreaks) )
{
break;
}
else
{
$tagName .= $this->SourceHtml[$i];
}
}
$tagName = strtolower($tagName);

//标记为注解
if($tagName=='!--')
{
$endPos = strpos($this->SourceHtml,'-->',$i);
if($endPos !== false)
{
$i=$endPos+3;
}
continue;
}

//标记在指定集合内
else if( in_array($tagName,$needTags) )
{
$startPos = $i;
$endPos = strpos($this->SourceHtml,'>',$i+1);
if($endPos===false)
{
break;
}
$attStr = substr($this->SourceHtml,$i+1,$endPos-$startPos-1);
$cAtt->SetSource($attStr);
if($tagName=='img')
{
$this->InsertMedia($cAtt->GetAtt('src'),'img');
}
else if($tagName=='embed')
{
$rurl = $this->InsertMedia($cAtt->GetAtt('src'),'embed');
if($rurl != '')
{
$this->MediaInfos[$rurl][0] = $cAtt->GetAtt('width');
$this->MediaInfos[$rurl][1] = $cAtt->GetAtt('height');
}
}
else if($tagName=='a')
{
$this->InsertLink($this->FillUrl($cAtt->GetAtt('href')),$this->GetInnerText($i,'a'));
}
}
else
{
continue;
}
$i--;
}//End if char

}//End for

if($this->Title == '')
{
$this->Title = $this->BaseUrl;
}
}

/**
* 重置资源
*
* @access private
* @return void
*/
function Clear()
{
$this->CAtt = '';
$this->SourceHtml = '';
$this->Title = '';
$this->Links = '';
$this->Medias = '';
$this->BaseUrl = '';
$this->BaseUrlPath = '';
}

/**
* 分析链接
*
* @access public
* @param string $url 地址
* @param string $mtype 媒体类型
* @return string
*/
function InsertMedia($url, $mtype)
{
if( preg_match("/^(javascript:|#|'|\")/", $url) )
{
return '';
}
if($url == '')
{
return '';
}
$this->Medias[$url]=$mtype;
return $url;
}

/**
* 分析链接
*
* @access public
* @param string $url 地址
* @param string $atitle 文档
* @return string
*/
function InsertLink($url, $atitle)
{
if( preg_match("/^(javascript:|#|'|\")/", $url) )
{
return '';
}
if($url == '')
{
return '';
}
if( preg_match('/^img:/', $atitle) )
{
list($aimg, $atitle) = explode(':txt:', $atitle);
if(!isset($this->Links[$url]))
{
if($atitle != '')
{
$this->Links[$url]['title'] = cn_substr($atitle,50);
}
else
{
$this->Links[$url]['title'] = preg_replace('/img:/', '', $aimg);
}
$this->Links[$url]['link'] = $url;
}
$this->Links[$url]['image'] = preg_replace('/img:/', '', $aimg);
$this->InsertMedia($this->Links[$url]['image'], 'img');
}
else
{
if(!isset($this->Links[$url]))
{
$this->Links[$url]['image'] = '';
$this->Links[$url]['title'] = $atitle;
$this->Links[$url]['link'] = $url;
}
else
{
if(strlen($this->Links[$url]['title']) < strlen($atitle)) $this->Links[$url]['title'] = $atitle;
}
}
return $url;
}

/**
* 分析content-type中的字符类型
*
* @access public
* @param string $att 属性字符串
* @return string
*/
function ParCharSet($att)
{
$startdd=0;
$taglen=0;
$startdd = strpos($att,'=');
if($startdd===false)
{
return '';
}
else
{
$taglen = strlen($att)-$startdd-1;
if($taglen<=0)
{
return '';
}
return trim(substr($att, $startdd+1, $taglen));
}
}

/**
* 补全相对网址
*
* @access public
* @param string $surl 地址
* @return string
*/
function FillUrl($surl)
{
$i = $pathStep = 0;
$dstr = $pstr = $okurl = '';

$surl = trim($surl);
if($surl == '')
{
return '';
}
$pos = strpos($surl,'#');
if($pos>0)
{
$surl = substr($surl,0,$pos);
}
if($surl[0]=='/')
{
$okurl = $this->HomeUrl.'/'.$surl;
}
else if($surl[0]=='.')
{
if(!isset($surl[2]))
{
return '';
}
else if($surl[0]=='/')
{
$okurl = $this->BaseUrlPath."/".substr($surl,2,strlen($surl)-2);
}
else
{
$urls = explode('/',$surl);
foreach($urls as $u)
{
if($u=='..')
{
$pathStep++;
}
else if($i<count($urls)-1)
{
$dstr .= $urls[$i].'/';
}
else
{
$dstr .= $urls[$i];
}
$i++;
}
$urls = explode('/',$this->BaseUrlPath);
if(count($urls) <= $pathStep)
{
return '';
}
else
{
$pstr = '';
for($i=0;$i<count($urls)-$pathStep;$i++){ $pstr .= $urls[$i].'/'; }
$okurl = $pstr.$dstr;
}
}
}
else
{
if( strlen($surl) < 7 )
{
$okurl = $this->BaseUrlPath.'/'.$surl;
}
else if( strtolower(substr($surl,0,7))=='http://' )
{
$okurl = preg_replace('/^http:\/\//i', '', $surl);
}
else if( strtolower(substr($surl,0,8))=='https://' )
{
$okurl = preg_replace('/^https:\/\//i', '', $surl);
}
else
{
$okurl = $this->BaseUrlPath.'/'.$surl;
}
}
$okurl = preg_replace('/\/{1,}/i', '/', $okurl);
return $this->Scheme . $okurl;
}

/**
* 获得和下一个标记之间的文本内容
*
* @access public
* @param string $pos 位置地址
* @param string $tagname 标签名称
* @return string
*/
function GetInnerText(&$pos,$tagname)
{
$startPos=0;
$endPos=0;
$textLen=0;
$str = '';
$startPos = strpos($this->SourceHtml,'>',$pos);

if($tagname=='title')
{
$endPos = strpos($this->SourceHtml,'<',$startPos);
}
else
{
$endPos1 = strpos($this->SourceHtml,'</a',$startPos);
$endPos2 = strpos($this->SourceHtml,'</A',$startPos);
if($endPos1===false)
{
$endPos = $endPos2;
}
else if($endPos2===false)
{
$endPos = $endPos1;
}
else
{
$endPos = ($endPos1 < $endPos2 ? $endPos1 : $endPos2 );
}
}
if($endPos > $startPos)
{
$textLen = $endPos-$startPos;
$str = substr($this->SourceHtml,$startPos+1,$textLen-1);
}
$pos = $startPos + $textLen + strlen("</".$tagname) + 1;
if($tagname=='title')
{
return trim($str);
}
else
{
preg_match_all("/<img(.*)src=[\"']{0,1}(.*)[\"']{0,1}[> \r\n\t]{1,}/isU",$str,$imgs);
if(isset($imgs[2][0]))
{
$txt = trim(Html2Text($str));
$imgs[2][0] = preg_replace("/[\"']/",'',$imgs[2][0]);
return "img:".$this->FillUrl($imgs[2][0]).':txt:'.$txt;
}
else
{
$str = strip_tags($str);
//$str = preg_replace('/<\/(.*)$/i', '', $str);
//$str = trim(preg_replace('/^(.*)>/i','',$str));
return $str;
}
}
}
}//End class

/*******************************
//属性解析器
function c____DedeAttribute2();
********************************/
class DedeAttribute2
{
var $SourceString = '';
var $SourceMaxSize = 1024;
var $CharToLow = FALSE; //属性值是否不分大小写(属性名统一为小写)
var $IsTagName = TRUE; //是否解析标记名称
var $Count = -1;
var $Items = array(); //属性元素的集合

//设置属性解析器源字符串
function SetSource($str = '')
{
$this->Count = -1;
$this->Items =array();
$strLen = 0;
$this->SourceString = trim(preg_replace("/[ \t\r\n]{1,}/"," ",$str));
$strLen = strlen($this->SourceString);
$this->SourceString .= " "; //增加一个空格结尾,以方便处理没有属性的标记
if($strLen>0&&$strLen<=$this->SourceMaxSize)
{
$this->PrivateAttParse();
}
}

//获得某个属性
function GetAtt($str)
{
if($str == '')
{
return '';
}
$str = strtolower($str);
if(isset($this->Items[$str]))
{
return $this->Items[$str];
}
else
{
return '';
}
}

//判断属性是否存在
function IsAtt($str)
{
if($str == '')
{
return false;
}
$str = strtolower($str);
if(isset($this->Items[$str]))
{
return true;
}
else
{
return false;
}
}

//获得标记名称
function GetTagName()
{
return $this->GetAtt("tagname");
}

// 获得属性个数
function GetCount()
{
return $this->Count+1;
}

//解析属性(仅给SetSource调用)
function PrivateAttParse()
{
$d = '';
$tmpatt = '';
$tmpvalue = '';
$startdd = -1;
$ddtag = '';
$strLen = strlen($this->SourceString);
$j = 0;

//这里是获得标记的名称
if($this->IsTagName)
{
//如果属性是注解，不再解析里面的内容，直接返回
if(isset($this->SourceString[2]))
{
if($this->SourceString[0].$this->SourceString[1].$this->SourceString[2]=='!--')
{
$this->Items['tagname'] = '!--';
return ;
}
}
for($i=0;$i<$strLen;$i++)
{
$d = $this->SourceString[$i];
$j++;
if(preg_match("/[ '\"\r\n\t]/i", $d))
{
$this->Count++;
$this->Items["tagname"]=strtolower(trim($tmpvalue));
$tmpvalue = ''; break;
}
else
{
$tmpvalue .= $d;
}
}
if($j>0)
{
$j = $j-1;
}
}

//遍历源字符串，获得各属性
for($i=$j;$i<$strLen;$i++)
{
$d = $this->SourceString[$i];
//获得属性的键
if($startdd==-1)
{
if($d!='=')
{
$tmpatt .= $d;
}
else
{
$tmpatt = strtolower(trim($tmpatt));
$startdd=0;
}
}

//检测属性值是用什么包围的，允许使用 '' '' 或空白
else if($startdd==0)
{
switch($d)
{
case ' ':
continue;
break;
case '\'':
$ddtag='\'';
$startdd=1;
break;
case '"':
$ddtag='"';
$startdd=1;
break;
default:
$tmpvalue.=$d;
$ddtag=' ';
$startdd=1;
break;
}
}

//获得属性的值
else if($startdd==1)
{
if($d==$ddtag)
{
$this->Count++;
if($this->CharToLow)
{
$this->Items[$tmpatt] = strtolower(trim($tmpvalue));
}
else
{
$this->Items[$tmpatt] = trim($tmpvalue);
}
$tmpatt = '';
$tmpvalue = '';
$startdd=-1;
}
else
{
$tmpvalue.=$d;
}
}
}//End for

//处理没有值的属性(必须放在结尾才有效)如："input type=radio name=t1 value=aaa checked"
if($tmpatt != '')
{
$this->Items[$tmpatt] = '';
}
}//End Function PrivateAttParse

}//End Class DedeAttribute2

?>

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