Class imgInfo dim aso Private Sub Class_Initialize set aso=CreateObject("Adodb.Stream") aso.Mode=3 aso.Type=1 aso.Open End Sub Private Sub Class_Terminate err.clear set aso=nothing End Sub
Private Function Bin2Str(Bin) Dim I, Str For I=1 to LenB(Bin) clow=MidB(Bin,I,1) if ASCB(clow)<128 then Str = Str & Chr(ASCB(clow)) else I=I+1 if I <= LenB(Bin) then Str = Str & Chr(ASCW(MidB(Bin,I,1)&clow)) end if Next Bin2Str = Str End Function
Private Function Num2Str(num,base,lens) dim ret ret = "" while(num>=base) ret = (num mod base) & ret num = (num - num mod base)/base wend Num2Str = right(string(lens,"0") & num & ret,lens) End Function
Private Function Str2Num(str,base) dim ret ret = 0 for i=1 to len(str) ret = ret *base + cint(mid(str,i,1)) next Str2Num=ret End Function
Private Function BinVal(bin) dim ret ret = 0 for i = lenb(bin) to 1 step -1 ret = ret *256 + ascb(midb(bin,i,1)) next BinVal=ret End Function
Private Function BinVal2(bin) dim ret ret = 0 for i = 1 to lenb(bin) ret = ret *256 + ascb(midb(bin,i,1)) next BinVal2=ret End Function
Private Function getImageSize(filespec) dim ret(3) aso.LoadFromFile(filespec) bFlag=aso.read(3) select case hex(binVal(bFlag)) case "4E5089": aso.read(15) ret(0)="PNG" ret(1)=BinVal2(aso.read(2)) aso.read(2) ret(2)=BinVal2(aso.read(2)) case "464947": aso.read(3) ret(0)="GIF" ret(1)=BinVal(aso.read(2)) ret(2)=BinVal(aso.read(2)) case "535746": aso.read(5) binData=aso.Read(1) sConv=Num2Str(ascb(binData),2 ,8) nBits=Str2Num(left(sConv,5),2) sConv=mid(sConv,6) while(len(sConv)<nBits*4) binData=aso.Read(1) sConv=sConv&Num2Str(ascb(binData),2 ,8) wend ret(0)="SWF" ret(1)=int(abs(Str2Num(mid(sConv,1*nBits+1,nBits),2)-Str2Num(mid(sConv,0*nBits+1,nBits),2))/20) ret(2)=int(abs(Str2Num(mid(sConv,3*nBits+1,nBits),2)-Str2Num(mid(sConv,2*nBits+1,nBits),2))/20) case "FFD8FF": do do: p1=binVal(aso.Read(1)): loop while p1=255 and not aso.EOS if p1>191 and p1<196 then exit do else aso.read(binval2(aso.Read(2))-2) do:p1=binVal(aso.Read(1)):loop while p1<255 and not aso.EOS loop while true aso.Read(3) ret(0)="JPG" ret(2)=binval2(aso.Read(2)) ret(1)=binval2(aso.Read(2)) case else: if left(Bin2Str(bFlag),2)="BM" then aso.Read(15) ret(0)="BMP" ret(1)=binval(aso.Read(4)) ret(2)=binval(aso.Read(4)) else ret(0)="" end if end select ret(3)="width=""" & ret(1) &""" height=""" & ret(2) &"""" getimagesize=ret End Function
Public Function imgW(pic_path) Set fso1 = server.CreateObject("Scripting.FileSystemObject") If (fso1.FileExists(pic_path)) Then Set f1 = fso1.GetFile(pic_path) ext=fso1.GetExtensionName(pic_path) select case ext case "gif","bmp","jpg","png": arr=getImageSize(f1.path) imgW = arr(1) end select Set f1=nothing else imgW = 0 End if Set fso1=nothing End Function
Public Function imgH(pic_path) Set fso1 = server.CreateObject("Scripting.FileSystemObject") If (fso1.FileExists(pic_path)) Then Set f1 = fso1.GetFile(pic_path) ext=fso1.GetExtensionName(pic_path) select case ext case "gif","bmp","jpg","png": arr=getImageSize(f1.path) imgH = arr(2) end select Set f1=nothing else imgH = 0 End if Set fso1=nothing End Function End Class %>
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