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diff --git a/zlib/old/visual-basic.txt b/zlib/old/visual-basic.txt deleted file mode 100644 index 57efe58..0000000 --- a/zlib/old/visual-basic.txt +++ /dev/null @@ -1,160 +0,0 @@ -See below some functions declarations for Visual Basic. - -Frequently Asked Question: - -Q: Each time I use the compress function I get the -5 error (not enough - room in the output buffer). - -A: Make sure that the length of the compressed buffer is passed by - reference ("as any"), not by value ("as long"). Also check that - before the call of compress this length is equal to the total size of - the compressed buffer and not zero. - - -From: "Jon Caruana" <jon-net@usa.net> -Subject: Re: How to port zlib declares to vb? -Date: Mon, 28 Oct 1996 18:33:03 -0600 - -Got the answer! (I haven't had time to check this but it's what I got, and -looks correct): - -He has the following routines working: - compress - uncompress - gzopen - gzwrite - gzread - gzclose - -Declares follow: (Quoted from Carlos Rios <c_rios@sonda.cl>, in Vb4 form) - -#If Win16 Then 'Use Win16 calls. -Declare Function compress Lib "ZLIB.DLL" (ByVal compr As - String, comprLen As Any, ByVal buf As String, ByVal buflen - As Long) As Integer -Declare Function uncompress Lib "ZLIB.DLL" (ByVal uncompr - As String, uncomprLen As Any, ByVal compr As String, ByVal - lcompr As Long) As Integer -Declare Function gzopen Lib "ZLIB.DLL" (ByVal filePath As - String, ByVal mode As String) As Long -Declare Function gzread Lib "ZLIB.DLL" (ByVal file As - Long, ByVal uncompr As String, ByVal uncomprLen As Integer) - As Integer -Declare Function gzwrite Lib "ZLIB.DLL" (ByVal file As - Long, ByVal uncompr As String, ByVal uncomprLen As Integer) - As Integer -Declare Function gzclose Lib "ZLIB.DLL" (ByVal file As - Long) As Integer -#Else -Declare Function compress Lib "ZLIB32.DLL" - (ByVal compr As String, comprLen As Any, ByVal buf As - String, ByVal buflen As Long) As Integer -Declare Function uncompress Lib "ZLIB32.DLL" - (ByVal uncompr As String, uncomprLen As Any, ByVal compr As - String, ByVal lcompr As Long) As Long -Declare Function gzopen Lib "ZLIB32.DLL" - (ByVal file As String, ByVal mode As String) As Long -Declare Function gzread Lib "ZLIB32.DLL" - (ByVal file As Long, ByVal uncompr As String, ByVal - uncomprLen As Long) As Long -Declare Function gzwrite Lib "ZLIB32.DLL" - (ByVal file As Long, ByVal uncompr As String, ByVal - uncomprLen As Long) As Long -Declare Function gzclose Lib "ZLIB32.DLL" - (ByVal file As Long) As Long -#End If - --Jon Caruana -jon-net@usa.net -Microsoft Sitebuilder Network Level 1 Member - HTML Writer's Guild Member - - -Here is another example from Michael <michael_borgsys@hotmail.com> that he -says conforms to the VB guidelines, and that solves the problem of not -knowing the uncompressed size by storing it at the end of the file: - -'Calling the functions: -'bracket meaning: <parameter> [optional] {Range of possible values} -'Call subCompressFile(<path with filename to compress> [, <path with -filename to write to>, [level of compression {1..9}]]) -'Call subUncompressFile(<path with filename to compress>) - -Option Explicit -Private lngpvtPcnSml As Long 'Stores value for 'lngPercentSmaller' -Private Const SUCCESS As Long = 0 -Private Const strFilExt As String = ".cpr" -Private Declare Function lngfncCpr Lib "zlib.dll" Alias "compress2" (ByRef -dest As Any, ByRef destLen As Any, ByRef src As Any, ByVal srcLen As Long, -ByVal level As Integer) As Long -Private Declare Function lngfncUcp Lib "zlib.dll" Alias "uncompress" (ByRef -dest As Any, ByRef destLen As Any, ByRef src As Any, ByVal srcLen As Long) -As Long - -Public Sub subCompressFile(ByVal strargOriFilPth As String, Optional ByVal -strargCprFilPth As String, Optional ByVal intLvl As Integer = 9) - Dim strCprPth As String - Dim lngOriSiz As Long - Dim lngCprSiz As Long - Dim bytaryOri() As Byte - Dim bytaryCpr() As Byte - lngOriSiz = FileLen(strargOriFilPth) - ReDim bytaryOri(lngOriSiz - 1) - Open strargOriFilPth For Binary Access Read As #1 - Get #1, , bytaryOri() - Close #1 - strCprPth = IIf(strargCprFilPth = "", strargOriFilPth, strargCprFilPth) -'Select file path and name - strCprPth = strCprPth & IIf(Right(strCprPth, Len(strFilExt)) = -strFilExt, "", strFilExt) 'Add file extension if not exists - lngCprSiz = (lngOriSiz * 1.01) + 12 'Compression needs temporary a bit -more space then original file size - ReDim bytaryCpr(lngCprSiz - 1) - If lngfncCpr(bytaryCpr(0), lngCprSiz, bytaryOri(0), lngOriSiz, intLvl) = -SUCCESS Then - lngpvtPcnSml = (1# - (lngCprSiz / lngOriSiz)) * 100 - ReDim Preserve bytaryCpr(lngCprSiz - 1) - Open strCprPth For Binary Access Write As #1 - Put #1, , bytaryCpr() - Put #1, , lngOriSiz 'Add the the original size value to the end -(last 4 bytes) - Close #1 - Else - MsgBox "Compression error" - End If - Erase bytaryCpr - Erase bytaryOri -End Sub - -Public Sub subUncompressFile(ByVal strargFilPth As String) - Dim bytaryCpr() As Byte - Dim bytaryOri() As Byte - Dim lngOriSiz As Long - Dim lngCprSiz As Long - Dim strOriPth As String - lngCprSiz = FileLen(strargFilPth) - ReDim bytaryCpr(lngCprSiz - 1) - Open strargFilPth For Binary Access Read As #1 - Get #1, , bytaryCpr() - Close #1 - 'Read the original file size value: - lngOriSiz = bytaryCpr(lngCprSiz - 1) * (2 ^ 24) _ - + bytaryCpr(lngCprSiz - 2) * (2 ^ 16) _ - + bytaryCpr(lngCprSiz - 3) * (2 ^ 8) _ - + bytaryCpr(lngCprSiz - 4) - ReDim Preserve bytaryCpr(lngCprSiz - 5) 'Cut of the original size value - ReDim bytaryOri(lngOriSiz - 1) - If lngfncUcp(bytaryOri(0), lngOriSiz, bytaryCpr(0), lngCprSiz) = SUCCESS -Then - strOriPth = Left(strargFilPth, Len(strargFilPth) - Len(strFilExt)) - Open strOriPth For Binary Access Write As #1 - Put #1, , bytaryOri() - Close #1 - Else - MsgBox "Uncompression error" - End If - Erase bytaryCpr - Erase bytaryOri -End Sub -Public Property Get lngPercentSmaller() As Long - lngPercentSmaller = lngpvtPcnSml -End Property |