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BASIC Source File
|
1998-08-28
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16KB
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462 lines
Attribute VB_Name = "VBUnzBas"
Option Explicit
'-- Please Do Not Remove These Comment Lines!
'----------------------------------------------------------------
'-- Sample VB 5 code to drive unzip32.dll
'-- Contributed to the Info-ZIP project by Mike Le Voi
'--
'-- Contact me at: mlevoi@modemss.brisnet.org.au
'--
'-- Visit my home page at: http://modemss.brisnet.org.au/~mlevoi
'--
'-- Use this code at your own risk. Nothing implied or warranted
'-- to work on your machine :-)
'----------------------------------------------------------------
'--
'-- This Source Code Is Freely Available From The Info-ZIP Project
'-- Web Server At:
'-- http://www.cdrom.com/pub/infozip/infozip.html
'--
'-- A Very Special Thanks To Mr. Mike Le Voi
'-- And Mr. Mike White
'-- And The Fine People Of The Info-ZIP Group
'-- For Letting Me Use And Modify Their Orginal
'-- Visual Basic 5.0 Code! Thank You Mike Le Voi.
'-- For Your Hard Work In Helping Me Get This To Work!!!
'---------------------------------------------------------------
'--
'-- Contributed To The Info-ZIP Project By Raymond L. King.
'-- Modified June 21, 1998
'-- By Raymond L. King
'-- Custom Software Designers
'--
'-- Contact Me At: king@ntplx.net
'-- ICQ 434355
'-- Or Visit Our Home Page At: http://www.ntplx.net/~king
'--
'---------------------------------------------------------------
'--
'-- Modified August 17, 1998
'-- by Christian Spieler
'-- (implemented sort of a "real" user interface)
'--
'---------------------------------------------------------------
'-- C Style argv
Private Type UNZIPnames
uzFiles(0 To 99) As String
End Type
'-- Callback Large "String"
Private Type UNZIPCBChar
ch(32800) As Byte
End Type
'-- Callback Small "String"
Private Type UNZIPCBCh
ch(256) As Byte
End Type
'-- UNZIP32.DLL DCL Structure
Private Type DCLIST
ExtractOnlyNewer As Long ' 1 = Extract Only Newer, Else 0
SpaceToUnderscore As Long ' 1 = Convert Space To Underscore, Else 0
PromptToOverwrite As Long ' 1 = Prompt To Overwrite Required, Else 0
fQuiet As Long ' 2 = No Messages, 1 = Less, 0 = All
ncflag As Long ' 1 = Write To Stdout, Else 0
ntflag As Long ' 1 = Test Zip File, Else 0
nvflag As Long ' 0 = Extract, 1 = List Zip Contents
nUflag As Long ' 1 = Extract Only Newer, Else 0
nzflag As Long ' 1 = Display Zip File Comment, Else 0
ndflag As Long ' 1 = Honor Directories, Else 0
noflag As Long ' 1 = Overwrite Files, Else 0
naflag As Long ' 1 = Convert CR To CRLF, Else 0
nZIflag As Long ' 1 = Zip Info Verbose, Else 0
C_flag As Long ' 1 = Case Insensitivity, 0 = Case Sensitivity
fPrivilege As Long ' 1 = ACL, 2 = Privileges
Zip As String ' The Zip Filename To Extract Files
ExtractDir As String ' The Extraction Directory, NULL If Extracting To Current Dir
End Type
'-- UNZIP32.DLL Userfunctions Structure
Private Type USERFUNCTION
UZDLLPrnt As Long ' Pointer To Apps Print Function
UZDLLSND As Long ' Pointer To Apps Sound Function
UZDLLREPLACE As Long ' Pointer To Apps Replace Function
UZDLLPASSWORD As Long ' Pointer To Apps Password Function
UZDLLMESSAGE As Long ' Pointer To Apps Message Function
UZDLLSERVICE As Long ' Pointer To Apps Service Function (Not Coded!)
TotalSizeComp As Long ' Total Size Of Zip Archive
TotalSize As Long ' Total Size Of All Files In Archive
CompFactor As Long ' Compression Factor
NumMembers As Long ' Total Number Of All Files In The Archive
cchComment As Integer ' Flag If Archive Has A Comment!
End Type
'-- UNZIP32.DLL Version Structure
Private Type UZPVER
structlen As Long ' Length Of The Structure Being Passed
flag As Long ' Bit 0: is_beta bit 1: uses_zlib
beta As String * 10 ' e.g., "g BETA" or ""
date As String * 20 ' e.g., "4 Sep 95" (beta) or "4 September 1995"
zlib As String * 10 ' e.g., "1.0.5" or NULL
unzip(1 To 4) As Byte ' Version Type Unzip
zipinfo(1 To 4) As Byte ' Version Type Zip Info
os2dll As Long ' Version Type OS2 DLL
windll(1 To 4) As Byte ' Version Type Windows DLL
End Type
'-- This Assumes UNZIP32.DLL Is In Your \Windows\System Directory!
Private Declare Function Wiz_SingleEntryUnzip Lib "unzip32.dll" _
(ByVal ifnc As Long, ByRef ifnv As UNZIPnames, _
ByVal xfnc As Long, ByRef xfnv As UNZIPnames, _
dcll As DCLIST, Userf As USERFUNCTION) As Long
Private Declare Sub UzpVersion2 Lib "unzip32.dll" (uzpv As UZPVER)
'-- Private Variables For Structure Access
Private UZDCL As DCLIST
Private UZUSER As USERFUNCTION
Private UZVER As UZPVER
'-- Public Variables For Setting The
'-- UNZIP32.DLL DCLIST Structure
'-- These Must Be Set Before The Actual Call To VBUnZip32
Public uExtractNewer As Integer ' 1 = Extract Only Newer, Else 0
Public uSpaceUnderScore As Integer ' 1 = Convert Space To Underscore, Else 0
Public uPromptOverWrite As Integer ' 1 = Prompt To Overwrite Required, Else 0
Public uQuiet As Integer ' 2 = No Messages, 1 = Less, 0 = All
Public uWriteStdOut As Integer ' 1 = Write To Stdout, Else 0
Public uTestZip As Integer ' 1 = Test Zip File, Else 0
Public uExtractList As Integer ' 0 = Extract, 1 = List Contents
Public uExtractOnlyNewer As Integer ' 1 = Extract Only Newer, Else 0
Public uDisplayComment As Integer ' 1 = Display Zip File Comment, Else 0
Public uHonorDirectories As Integer ' 1 = Honor Directories, Else 0
Public uOverWriteFiles As Integer ' 1 = Overwrite Files, Else 0
Public uConvertCR_CRLF As Integer ' 1 = Convert CR To CRLF, Else 0
Public uVerbose As Integer ' 1 = Zip Info Verbose
Public uCaseSensitivity As Integer ' 1 = Case Insensitivity, 0 = Case Sensitivity
Public uPrivilege As Integer ' 1 = ACL, 2 = Privileges, Else 0
Public uZipFileName As String ' The Zip File Name
Public uExtractDir As String ' Extraction Directory, Null If Current Directory
'-- Public Program Variables
Public uZipNumber As Long ' Zip File Number
Public uNumberFiles As Long ' Number Of Files
Public uNumberXFiles As Long ' Number Of Extracted Files
Public uZipMessage As String ' For Zip Message
Public uZipInfo As String ' For Zip Information
Public uZipNames As UNZIPnames ' Names Of Files To Unzip
Public uExcludeNames As UNZIPnames ' Names Of Zip Files To Exclude
Public uVbSkip As Integer ' For DLL Password Function
'-- Puts A Function Pointer In A Structure
'-- For Callbacks.
Public Function FnPtr(ByVal lp As Long) As Long
FnPtr = lp
End Function
'-- Callback For UNZIP32.DLL - Receive Message Function
Public Sub UZReceiveDLLMessage(ByVal ucsize As Long, _
ByVal csiz As Long, _
ByVal cfactor As Integer, _
ByVal mo As Integer, _
ByVal dy As Integer, _
ByVal yr As Integer, _
ByVal hh As Integer, _
ByVal mm As Integer, _
ByVal c As Byte, ByRef fname As UNZIPCBCh, _
ByRef meth As UNZIPCBCh, ByVal crc As Long, _
ByVal fCrypt As Byte)
Dim s0 As String
Dim xx As Long
Dim strout As String * 80
'-- Always Put This In Callback Routines!
On Error Resume Next
'------------------------------------------------
'-- This Is Where The Received Messages Are
'-- Printed Out And Displayed.
'-- You Can Modify Below!
'------------------------------------------------
strout = Space(80)
'-- For Zip Message Printing
If uZipNumber = 0 Then
Mid(strout, 1, 50) = "Filename:"
Mid(strout, 53, 4) = "Size"
Mid(strout, 62, 4) = "Date"
Mid(strout, 71, 4) = "Time"
uZipMessage = strout & vbNewLine
strout = Space(80)
End If
s0 = ""
'-- Do Not Change This For Next!!!
For xx = 0 To 255
If fname.ch(xx) = 0 Then Exit For
s0 = s0 & Chr(fname.ch(xx))
Next
'-- Assign Zip Information For Printing
Mid(strout, 1, 50) = Mid(s0, 1, 50)
Mid(strout, 51, 7) = Right(" " & Str(ucsize), 7)
Mid(strout, 60, 3) = Right("0" & Trim(Str(mo)), 2) & "/"
Mid(strout, 63, 3) = Right("0" & Trim(Str(dy)), 2) & "/"
Mid(strout, 66, 2) = Right("0" & Trim(Str(yr)), 2)
Mid(strout, 70, 3) = Right(Str(hh), 2) & ":"
Mid(strout, 73, 2) = Right("0" & Trim(Str(mm)), 2)
' Mid(strout, 75, 2) = Right(" " & Str(cfactor), 2)
' Mid(strout, 78, 8) = Right(" " & Str(csiz), 8)
' s0 = ""
' For xx = 0 To 255
' If meth.ch(xx) = 0 Then exit for
' s0 = s0 & Chr(meth.ch(xx))
' Next xx
'-- Do Not Modify Below!!!
uZipMessage = uZipMessage & strout & vbNewLine
uZipNumber = uZipNumber + 1
End Sub
'-- Callback For UNZIP32.DLL - Print Message Function
Public Function UZDLLPrnt(ByRef fname As UNZIPCBChar, ByVal x As Long) As Long
Dim s0 As String
Dim xx As Long
'-- Always Put This In Callback Routines!
On Error Resume Next
s0 = ""
'-- Gets The UNZIP32.DLL Message For Displaying.
For xx = 0 To x - 1
If fname.ch(xx) = 0 Then Exit For
s0 = s0 & Chr(fname.ch(xx))
Next
'-- Assign Zip Information
If Mid$(s0, 1, 1) = vbLf Then s0 = vbNewLine ' Damn UNIX :-)
uZipInfo = uZipInfo & s0
UZDLLPrnt = 0
End Function
'-- Callback For UNZIP32.DLL - DLL Service Function
Public Function UZDLLServ(ByRef mname As UNZIPCBChar, ByVal x As Long) As Long
Dim s0 As String
Dim xx As Long
'-- Always Put This In Callback Routines!
On Error Resume Next
s0 = ""
'-- Get Zip32.DLL Message For processing
For xx = 0 To x - 1
If mname.ch(xx) = 0 Then Exit For
s0 = s0 + Chr(mname.ch(xx))
Next
' At this point, s0 contains the message passed from the DLL
' It is up to the developer to code something useful here :)
UZDLLServ = 0 ' Setting this to 1 will abort the zip!
End Function
'-- Callback For UNZIP32.DLL - Password Function
Public Function UZDLLPass(ByRef p As UNZIPCBCh, _
ByVal n As Long, ByRef m As UNZIPCBCh, _
ByRef Name As UNZIPCBCh) As Integer
Dim prompt As String
Dim xx As Integer
Dim szpassword As String
'-- Always Put This In Callback Routines!
On Error Resume Next
UZDLLPass = 1
If uVbSkip = 1 Then Exit Function
'-- Get The Zip File Password
szpassword = InputBox("Please Enter The Password!")
'-- No Password So Exit The Function
If szpassword = "" Then
uVbSkip = 1
Exit Function
End If
'-- Zip File Password So Process It
For xx = 0 To 255
If m.ch(xx) = 0 Then
Exit For
Else
prompt = prompt & Chr(m.ch(xx))
End If
Next
For xx = 0 To n - 1
p.ch(xx) = 0
Next
For xx = 0 To Len(szpassword) - 1
p.ch(xx) = Asc(Mid(szpassword, xx + 1, 1))
Next
p.ch(xx) = Chr(0) ' Put Null Terminator For C
UZDLLPass = 0
End Function
'-- Callback For UNZIP32.DLL - Report Function To Overwrite Files.
'-- This Function Will Display A MsgBox Asking The User
'-- If They Would Like To Overwrite The Files.
Public Function UZDLLRep(ByRef fname As UNZIPCBChar) As Long
Dim s0 As String
Dim xx As Long
'-- Always Put This In Callback Routines!
On Error Resume Next
UZDLLRep = 100 ' 100 = Do Not Overwrite - Keep Asking User
s0 = ""
For xx = 0 To 255
If fname.ch(xx) = 0 Then xx = 99999 Else s0 = s0 & Chr(fname.ch(xx))
Next
'-- This Is The MsgBox Code
xx = MsgBox("Overwrite " & s0 & "?", vbExclamation & vbYesNoCancel, _
"VBUnZip32 - File Already Exists!")
If xx = vbNo Then Exit Function
If xx = vbCancel Then
UZDLLRep = 104 ' 104 = Overwrite None
Exit Function
End If
UZDLLRep = 102 ' 102 = Overwrite 103 = Overwrite All
End Function
'-- ASCIIZ To String Function
Public Function szTrim(szString As String) As String
Dim pos As Integer
Dim ln As Integer
pos = InStr(szString, Chr(0))
ln = Len(szString)
Select Case pos
Case Is > 1
szTrim = Trim(Left(szString, pos - 1))
Case 1
szTrim = ""
Case Else
szTrim = Trim(szString)
End Select
End Function
'-- Main UNZIP32.DLL UnZip32 Subroutine
'-- (WARNING!) Do Not Change!
Public Sub VBUnZip32()
Dim retcode As Long
Dim MsgStr As String
'-- Set The UNZIP32.DLL Options
'-- (WARNING!) Do Not Change
UZDCL.ExtractOnlyNewer = uExtractNewer ' 1 = Extract Only Newer
UZDCL.SpaceToUnderscore = uSpaceUnderScore ' 1 = Convert Space To Underscore
UZDCL.PromptToOverwrite = uPromptOverWrite ' 1 = Prompt To Overwrite Required
UZDCL.fQuiet = uQuiet ' 2 = No Messages 1 = Less 0 = All
UZDCL.ncflag = uWriteStdOut ' 1 = Write To Stdout
UZDCL.ntflag = uTestZip ' 1 = Test Zip File
UZDCL.nvflag = uExtractList ' 0 = Extract 1 = List Contents
UZDCL.nUflag = uExtractOnlyNewer ' 1 = Extract Only Newer
UZDCL.nzflag = uDisplayComment ' 1 = Display Zip File Comment
UZDCL.ndflag = uHonorDirectories ' 1 = Honour Directories
UZDCL.noflag = uOverWriteFiles ' 1 = Overwrite Files
UZDCL.naflag = uConvertCR_CRLF ' 1 = Convert CR To CRLF
UZDCL.nZIflag = uVerbose ' 1 = Zip Info Verbose
UZDCL.C_flag = uCaseSensitivity ' 1 = Case insensitivity, 0 = Case Sensitivity
UZDCL.fPrivilege = uPrivilege ' 1 = ACL 2 = Priv
UZDCL.Zip = uZipFileName ' ZIP Filename
UZDCL.ExtractDir = uExtractDir ' Extraction Directory, NULL If Extracting
' To Current Directory
'-- Set Callback Addresses
'-- (WARNING!!!) Do Not Change
UZUSER.UZDLLPrnt = FnPtr(AddressOf UZDLLPrnt)
UZUSER.UZDLLSND = 0& '-- Not Supported
UZUSER.UZDLLREPLACE = FnPtr(AddressOf UZDLLRep)
UZUSER.UZDLLPASSWORD = FnPtr(AddressOf UZDLLPass)
UZUSER.UZDLLMESSAGE = FnPtr(AddressOf UZReceiveDLLMessage)
UZUSER.UZDLLSERVICE = FnPtr(AddressOf UZDLLServ)
'-- Set UNZIP32.DLL Version Space
'-- (WARNING!!!) Do Not Change
With UZVER
.structlen = Len(UZVER)
.beta = Space(9) & vbNullChar
.date = Space(19) & vbNullChar
.zlib = Space(9) & vbNullChar
End With
'-- Get Version
Call UzpVersion2(UZVER)
'--------------------------------------
'-- You Can Change This For Displaying
'-- The Version Information!
'--------------------------------------
MsgStr$ = "DLL Date: " & szTrim(UZVER.date)
MsgStr$ = MsgStr$ & vbNewLine$ & "Zip Info: " & Hex(UZVER.zipinfo(1)) & "." & _
Hex(UZVER.zipinfo(2)) & Hex(UZVER.zipinfo(3))
MsgStr$ = MsgStr$ & vbNewLine$ & "DLL Version: " & Hex(UZVER.windll(1)) & "." & _
Hex(UZVER.windll(2)) & Hex(UZVER.windll(3))
MsgStr$ = MsgStr$ & vbNewLine$ & "--------------"
'-- End Of Version Information.
'-- Go UnZip The Files! (Do Not Change Below!!!)
'-- This Is The Actual UnZip Routine
retcode = Wiz_SingleEntryUnzip(uNumberFiles, uZipNames, uNumberXFiles, _
uExcludeNames, UZDCL, UZUSER)
'---------------------------------------------------------------
'-- If There Is An Error Display A MsgBox!
If retcode <> 0 Then MsgBox retcode
'-- You Can Change This As Needed!
'-- For Compression Information
MsgStr$ = MsgStr$ & vbNewLine$ & "Only Shows If uExtractList = 1 List Contents"
MsgStr$ = MsgStr$ & vbNewLine$ & "--------------"
MsgStr$ = MsgStr$ & vbNewLine$ & "Comment : " & UZUSER.cchComment
MsgStr$ = MsgStr$ & vbNewLine$ & "Total Size Comp : " & UZUSER.TotalSizeComp
MsgStr$ = MsgStr$ & vbNewLine$ & "Total Size : " & UZUSER.TotalSize
MsgStr$ = MsgStr$ & vbNewLine$ & "Compress Factor : %" & UZUSER.CompFactor
MsgStr$ = MsgStr$ & vbNewLine$ & "Num Of Members : " & UZUSER.NumMembers
MsgStr$ = MsgStr$ & vbNewLine$ & "--------------"
VBUnzFrm.MsgOut.Text = VBUnzFrm.MsgOut.Text & MsgStr$ & vbNewLine$
End Sub