您要打印的文件是:实现搜索结果的关键词变色标注的程序

实现搜索结果的关键词变色标注的程序

作者:飞鸟    转贴自:开发者俱乐部    点击数:2345


<%
' 以前写全文检索程序的时候写的.
' 原创 by 飞鸟@dev-club.com
' Email: flybird@dev-club.com
' ie5.5 脚本引擎 required

  dim patern
  dim found
  
  dim str
  dim result
  
  patern=(a)|(b)
  str= A dog fall in love with a cat. Can you believe?
  result=  
  call getMatchText(str,result,false)
  Response.Write result

  sub getMatchText(byref str,byref result,isNeedTrunc)
    'on error resume next
    Dim regEx, Match, Matches
    dim tStr
    Set regEx = New RegExp     ' 建立正则表达式。    
    regEx.Pattern = (patern)  ' 设置模式。
    regEx.IgnoreCase = True     ' 设置是否区分字符大小写。
    regEx.Global = True     ' 设置全局可用性。
    Set Matches = regEx.Execute(str)  ' 执行搜索。  
    if err.number<>0 then
      response.write 错误1: & err.description
      err.clear
      exit sub
    end if
    if matches.count <>0 then
      dim startIndex      
      dim myMatchValue
      startIndex=1
      for each match in matches
        if (instr(str,match.value)>0) then
          if instr(str,match.value)-50 >0 then
            startIndex=instr(str,match.value)-50
          else
            startIndex=1
          end if
          myMatchValue=match.value
          exit for
        end if
      next
      if isNeedTrunc then
        result= (mid(str,startIndex,strLength(myMatchValue)+100))
      else
        result= (str)  
      end if
      for each match in matches
        if not(instr(result,<font color=red> & match.value & </font>)>0) then
          result=replace(result,match.value,<font color=red> & match.value & </font> )
        end if
      next
      found=true
    else
      found=false
    end if  
    set regEx=nothing
  end sub
  
%>