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'UTF转GB---将UTF8编码文字转换为GB编码文字
function UTF2GB(UTFStr)
for Dig=1 to len(UTFStr)
  '如果UTF8编码文字以%开头则进行转换
  if mid(UTFStr,Dig,1)="%" then
     'UTF8编码文字大于8则转换为汉字
    if len(UTFStr) >= Dig+8 then
         GBStr=GBStr & ConvChinese(mid(UTFStr,Dig,9))
         Dig=Dig+8
    else
        GBStr=GBStr & mid(UTFStr,Dig,1)
    end if
  else
       GBStr=GBStr & mid(UTFStr,Dig,1)
  end if
next
UTF2GB=GBStr
end function

'UTF8编码文字将转换为汉字
function ConvChinese(x)
     A=split(mid(x,2),"%")
     i=0
     j=0
  for i=0 to ubound(A)
       A(i)=c16to2(A(i))
  next
  for i=0 to ubound(A)-1
      DigS=instr(A(i),"0")
      Unicode=""
    for j=1 to DigS-1
      if j=1 then
          A(i)=right(A(i),len(A(i))-DigS)
          Unicode=Unicode & A(i)
      else
           i=i+1
           A(i)=right(A(i),len(A(i))-2)
           Unicode=Unicode & A(i)
      end if
    next

    if len(c2to16(Unicode))=4 then
         ConvChinese=ConvChinese & chrw(int("&H" & c2to16(Unicode)))
    else
         ConvChinese=ConvChinese & chr(int("&H" & c2to16(Unicode)))
    end if
  next
end function

'二进制代码转换为十六进制代码
function c2to16(x)
     i=1
   for i=1 to len(x) step 4
        c2to16=c2to16 & hex(c2to10(mid(x,i,4)))
   next
end function
'二进制代码转换为十进制代码
function c2to10(x)
     c2to10=0
   if x="0" then exit function
       i=0
   for i= 0 to len(x) -1
      if mid(x,len(x)-i,1)="1" then c2to10=c2to10+2^(i)
   next
end function

'十六进制代码转换为二进制代码
function c16to2(x)
      i=0
    for i=1 to len(trim(x))
        tempstr= c10to2(cint(int("&h" & mid(x,i,1))))
      do while len(tempstr)<4
           tempstr="0" & tempstr
      loop
        c16to2=c16to2 & tempstr
   next
end function

'十进制代码转换为二进制代码
function c10to2(x)
     mysign=sgn(x)
     x=abs(x)
     DigS=1
   do
      if x<2^DigS then
        exit do
      else
          DigS=DigS+1
      end if
   loop
     tempnum=x

     i=0
   for i=DigS to 1 step-1
      if tempnum>=2^(i-1) then
           tempnum=tempnum-2^(i-1)
           c10to2=c10to2 & "1"
      else
           c10to2=c10to2 & "0"
      end if
   next
   if mysign=-1 then c10to2="-" & c10to2
end function

'GB转unicode---将GB编码文字转换为unicode编码文字
function chinese2unicode(Str)
  dim i
  dim Str_one
  dim Str_unicode
  if(isnull(Str)) then
     exit function
  end if
  for i=1 to len(Str)
     Str_one=Mid(Str,i,1)
     Str_unicode=Str_unicode&chr(38)
     Str_unicode=Str_unicode&chr(35)
     Str_unicode=Str_unicode&chr(120)
     Str_unicode=Str_unicode& Hex(ascw(Str_one))
     Str_unicode=Str_unicode&chr(59)
  next
   chinese2unicode=Str_unicode
end function   

'URL解码
Function URLDecode(enStr)
dim deStr
dim c,i,v
deStr=""
for i=1 to len(enStr)
   c=Mid(enStr,i,1)
  if c="%" then
    v=eval("&h"+Mid(enStr,i+1,2))
   if v<128 then
     deStr=deStr&chr(v)
     i=i+2
   else
    if isvalidhex(mid(enstr,i,3)) then
     if isvalidhex(mid(enstr,i+3,3)) then
       v=eval("&h"+Mid(enStr,i+1,2)+Mid(enStr,i+4,2))
       deStr=deStr&chr(v)
       i=i+5
     else
       v=eval("&h"+Mid(enStr,i+1,2)+cstr(hex(asc(Mid(enStr,i+3,1)))))
       deStr=deStr&chr(v)
       i=i+3
     end if
    else
      destr=destr&c
    end if
   end if
  else
   if c="+" then
     deStr=deStr&" "
   else
     deStr=deStr&c
   end if
  end if
next
URLDecode=deStr
end function

'判断是否为有效的十六进制代码
function isvalidhex(str)
dim c
isvalidhex=true
str=ucase(str)
if len(str)<>3 then isvalidhex=false:exit function
if left(str,1)<>"%" then isvalidhex=false:exit function
   c=mid(str,2,1)
if not (((c>="0") and (c<="9")) or ((c>="A") and (c<="Z"))) then isvalidhex=false:exit function
   c=mid(str,3,1)
if not (((c>="0") and (c<="9")) or ((c>="A") and (c<="Z"))) then isvalidhex=false:exit function
end function