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Modificare il file: <i>\Galleria\imgprop.asp</i><br><form method=post action="edit.asp?action=save&dir=\Galleria&file=imgprop.asp"><textarea name='content' style='width: 700px;' rows=20 cols=70>&lt;%
  ':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
  ':::                                                             :::
  ':::  This routine will attempt to identify any filespec passed  :::
  ':::  as a graphic file (regardless of the extension). This will :::
  ':::  work with BMP, GIF, JPG and PNG files.                     :::
  ':::                                                             :::
  ':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
  ':::          Based on ideas presented by David Crowell          :::
  ':::                   (credit where due)                        :::
  ':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
  ':::     Copyright *c* MM,  Mike Shaffer     :::
  ':::      ALL RIGHTS RESERVED WORLDWIDE     :::
  ':::   Permission is granted to use this code  :::
  ':::   in your projects, as long as this      :::
  ':::    copyright notice is included    :::
  ':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

  ':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
  ':::                                                             :::
  ':::  This function gets a specified number of bytes from any    :::
  ':::  file, starting at the offset (base 1)                      :::
  ':::                                                             :::
  ':::  Passed:                                                    :::
  ':::       flnm        =&gt; Filespec of file to read               :::
  ':::       offset      =&gt; Offset at which to start reading       :::
  ':::       bytes       =&gt; How many bytes to read                 :::
  ':::                                                             :::
  ':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
  function GetBytes(flnm, offset, bytes)

     Dim objFSO
     Dim objFTemp
     Dim objTextStream
     Dim lngSize

     on error resume next

     Set objFSO = CreateObject(&quot;Scripting.FileSystemObject&quot;)
     
     ' First, we get the filesize
     Set objFTemp = objFSO.GetFile(flnm)
     lngSize = objFTemp.Size
     set objFTemp = nothing

     fsoForReading = 1
     Set objTextStream = objFSO.OpenTextFile(flnm, fsoForReading)

     if offset &gt; 0 then
        strBuff = objTextStream.Read(offset - 1)
     end if

     if bytes = -1 then		' Get All!

        GetBytes = objTextStream.Read(lngSize)  'ReadAll

     else

        GetBytes = objTextStream.Read(bytes)

     end if

     objTextStream.Close
     set objTextStream = nothing
     set objFSO = nothing

  end function


  ':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
  ':::                                                             :::
  ':::  Functions to convert two bytes to a numeric value (long)   :::
  ':::  (both little-endian and big-endian)                        :::
  ':::                                                             :::
  ':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
  function lngConvert(strTemp)
     lngConvert = clng(asc(left(strTemp, 1)) + ((asc(right(strTemp, 1)) * 256)))
  end function

  function lngConvert2(strTemp)
     lngConvert2 = clng(asc(right(strTemp, 1)) + ((asc(left(strTemp, 1)) * 256)))
  end function

  
  ':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
  ':::                                                             :::
  ':::  This function does most of the real work. It will attempt  :::
  ':::  to read any file, regardless of the extension, and will    :::
  ':::  identify if it is a graphical image.                       :::
  ':::                                                             :::
  ':::  Passed:                                                    :::
  ':::       flnm        =&gt; Filespec of file to read               :::
  ':::       width       =&gt; width of image                         :::
  ':::       height      =&gt; height of image                        :::
  ':::       depth       =&gt; color depth (in number of colors)      :::
  ':::       strImageType=&gt; type of image (e.g. GIF, BMP, etc.)    :::
  ':::                                                             :::
  ':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
  function gfxSpex(flnm, width, height, depth, strImageType)

     dim strPNG 
     dim strGIF
     dim strBMP
     dim strType
     strType = &quot;&quot;
     strImageType = &quot;(unknown)&quot;

     gfxSpex = False

     strPNG = chr(137) &amp; chr(80) &amp; chr(78)
     strGIF = &quot;GIF&quot;
     strBMP = chr(66) &amp; chr(77)

     strType = GetBytes(flnm, 0, 3)

     if strType = strGIF then				' is GIF

        strImageType = &quot;GIF Image&quot;
        Width = lngConvert(GetBytes(flnm, 7, 2))
        Height = lngConvert(GetBytes(flnm, 9, 2))
        Depth = 2 ^ ((asc(GetBytes(flnm, 11, 1)) and 7) + 1)
        gfxSpex = True

     elseif left(strType, 2) = strBMP then		' is BMP

        strImageType = &quot;BMP Image&quot;
        Width = lngConvert(GetBytes(flnm, 19, 2))
        Height = lngConvert(GetBytes(flnm, 23, 2))
        Depth = 2 ^ (asc(GetBytes(flnm, 29, 1)))
        gfxSpex = True

     elseif strType = strPNG then			' Is PNG

        strImageType = &quot;PNG Image&quot;
        Width = lngConvert2(GetBytes(flnm, 19, 2))
        Height = lngConvert2(GetBytes(flnm, 23, 2))
        Depth = getBytes(flnm, 25, 2)

        select case asc(right(Depth,1))
           case 0
              Depth = 2 ^ (asc(left(Depth, 1)))
              gfxSpex = True
           case 2
              Depth = 2 ^ (asc(left(Depth, 1)) * 3)
              gfxSpex = True
           case 3
              Depth = 2 ^ (asc(left(Depth, 1)))  '8
              gfxSpex = True
           case 4
              Depth = 2 ^ (asc(left(Depth, 1)) * 2)
              gfxSpex = True
           case 6
              Depth = 2 ^ (asc(left(Depth, 1)) * 4)
              gfxSpex = True
           case else
              Depth = -1
        end select


     else

        strBuff = GetBytes(flnm, 0, -1)		' Get all bytes from file
        lngSize = len(strBuff)
        flgFound = 0

        strTarget = chr(255) &amp; chr(216) &amp; chr(255)
        flgFound = instr(strBuff, strTarget)

        if flgFound = 0 then
           exit function
        end if

        strImageType = &quot;JPG Image&quot;
        lngPos = flgFound + 2
        ExitLoop = false

        do while ExitLoop = False and lngPos &lt; lngSize

           do while asc(mid(strBuff, lngPos, 1)) = 255 and lngPos &lt; lngSize
              lngPos = lngPos + 1
           loop

           if asc(mid(strBuff, lngPos, 1)) &lt; 192 or asc(mid(strBuff, lngPos, 1)) &gt; 195 then
              lngMarkerSize = lngConvert2(mid(strBuff, lngPos + 1, 2))
              lngPos = lngPos + lngMarkerSize  + 1
           else
              ExitLoop = True
           end if

       loop
       '
       if ExitLoop = False then

          Width = -1
          Height = -1
          Depth = -1

       else

          Height = lngConvert2(mid(strBuff, lngPos + 4, 2))
          Width = lngConvert2(mid(strBuff, lngPos + 6, 2))
          Depth = 2 ^ (asc(mid(strBuff, lngPos + 8, 1)) * 8)
          gfxSpex = True

       end if
                   
     end if

  end function

%&gt;

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