模块部分：
Option Explicit
Type FileSection
Bytes() As Byte
FileLen As Long
End Type
Type SectionedFile
Files() As FileSection
NumberOfFiles As Long
End Type
Type FileInfo
OrigProjSize As Long
OrigFileName As String
FileCount As Integer
FileStartNum As Long
End Type
Type CommReturn
FileName As String
Extention As String
FilePath As String
End Type
Public Function Save_Load_File(ShowSave As Boolean, ComDlgCnt As CommonDialog, Filter As String, Flags As Long, DialogTitle As String, Optional FilterIndex As Long) As CommReturn
On Error Resume Next
ComDlgCnt.FileName = ""
ComDlgCnt.Filter = Filter
ComDlgCnt.Flags = Flags
ComDlgCnt.FilterIndex = FilterIndex
ComDlgCnt.DialogTitle = DialogTitle
If ShowSave Then
ComDlgCnt.ShowSave
If Err = cdlCancel Then Exit Function
Else
ComDlgCnt.ShowOpen
If Err = cdlCancel Then Exit Function
End If
Save_Load_File.FileName = RetFileName(ComDlgCnt.FileName)
Save_Load_File.Extention = ReturnExtention(ComDlgCnt.FileName, False)
Save_Load_File.FilePath = FilePath(ComDlgCnt.FileName)
End Function
Public Function ReturnExtention(FileName As String, ReturnFilename As Boolean) As String
Dim Buffer1 As String, m_LngLoop As Long, StartPos As Long
Buffer1 = FileName
For m_LngLoop = 1 To Len(Buffer1)
If Mid(Buffer1, m_LngLoop, 1) = "." Then
StartPos = m_LngLoop
End If
Next m_LngLoop
If StartPos = 0 Then ReturnExtention = ""
If ReturnFilename = True Then
ReturnExtention = Mid(Buffer1, 1, StartPos - 1)
Else
ReturnExtention = Mid(Buffer1, StartPos + 1)
End If
End Function
Sub SplitDirName(DirName As String, Lines() As String)
'SplitDirName
'Created By Allen
If DirName = "" Then Exit Sub
Dim Text As String, CurNum As Long, TotalNum As Long, CurPos As Long
Text = DirName
CurNum = 1
CurPos = 1
TotalNum = GetCount(Text, "\")
ReDim Lines(1 To TotalNum)
Do Until CurNum = TotalNum + 1
Lines(CurNum) = Mid(Text, 1, InStr(CurPos, Text, "\") - 1)
Text = Mid(Text, Len(Lines(CurNum)) + 2)
CurNum = CurNum + 1
Loop
End Sub
Public Function GetCount(Text As String, Search As String)
Dim CCnt As Long, m_LngLoop As Long
For m_LngLoop = 1 To Len(Text)
If Mid(Text, m_LngLoop, Len(Search)) = Search Then
CCnt = CCnt + 1
End If
Next
GetCount = CCnt
End Function
Public Function FilePath(FileName As String) As String
Dim XText As String, DFileName As String, m_LngLoop As Long, DLines() As String
XText = FileName
If Not Right(XText, 1) = "\" Then XText = XText & "\"
SplitDirName CStr(XText), DLines()
For m_LngLoop = 1 To UBound(DLines) - 1
DFileName = DFileName & DLines(m_LngLoop) & "\"
Next
FilePath = DFileName
End Function
Public Function SplitFile(SplitFileName As String, BeginningNumber As Long, ReturnErrorDes As String, Optional Split As Long = 1439865) As Boolean
Dim SaveName As String
Dim fnum As Integer
SplitFile = True 'Assume Success
On Error GoTo CleanUp
Dim CurrentFile As SectionedFile, m_lngNumFil As Long, m_LngLoop As Long, FilesLen As Long
FilesLen = FileLen(SplitFileName)
If FilesLen <= Split + 1 Then
SplitFile = False 'If the File
' Name is Smaller than the Split Ratio then
' The Function Doesnt Need Called So it Fails.
ReturnErrorDes = "File Is Too Small"
Exit Function
End If
fnum = FreeFile
Open SplitFileName For Binary As fnum
If CInt(FilesLen / Split) >= _
FilesLen / Split Or CInt(FilesLen / Split) _
= FilesLen / Split Then
m_lngNumFil = CInt(FilesLen _
/ Split) ' If VB heightened(or if they _
were equal) the length of the file _
divided by the total Split ratio then _
nothing needs To Do anything.
ElseIf CInt(FilesLen / Split) <= _
FilesLen / Split Then
m_lngNumFil = CInt(FilesLen / _
Split) + 1 ' If VB Lowered The _
Length Of the File Divided by the Total _
Split Ratio then it Will Need To Correct _
it.
End If
ReDim CurrentFile.Files(1 To m_lngNumFil)
For m_LngLoop = 1 To m_lngNumFil - 1
ReDim CurrentFile.Files(m_LngLoop) _
.Bytes(1 To Split) 'Re-Define(Re _
Dimention) the Number Of Bytes Per _
File
CurrentFile.Files(m_LngLoop) _
.FileLen = UBound(CurrentFile.Files _
(m_LngLoop).Bytes) 'Just For Reference
Next
For m_LngLoop = 1 To m_lngNumFil
Get #fnum, , CurrentFile.Files(m_LngLoop) _
.Bytes
Next
ReDim CurrentFile.Files(m_lngNumFil) _
.Bytes(1 To FilesLen - ((m_lngNumFil _
- 1) * Split)) 'ReDefine the Number of _
bytes for the last file since in many cases _
it will not be at the Split ratio.
CurrentFile.NumberOfFiles = m_lngNumFil
Get #fnum, , CurrentFile.Files(m_lngNumFil) _
.Bytes
CurrentFile.Files(m_lngNumFil) _
.FileLen = UBound(CurrentFile.Files _
(m_lngNumFil).Bytes)
Close #fnum 'Close File
For m_LngLoop = 1 To CurrentFile.NumberOfFiles _
'Save What We Have Done Into Seperate Files
SaveName = SplitFileName & "." & Format(BeginningNumber - 1 + m_LngLoop, _
"00#")
fnum = FreeFile
Open SaveName For Binary As fnum
Put #fnum, 1, CurrentFile.Files(m_LngLoop)
Close #fnum
Next
Dim FileInfoFile As FileInfo
FileInfoFile.FileCount = m_lngNumFil
FileInfoFile.OrigFileName = SplitFileName
FileInfoFile.OrigProjSize = FileLen(SplitFileName)
FileInfoFile.FileStartNum = BeginningNumber
SaveName = SplitFileName & ".tpl"
fnum = FreeFile
Open SaveName For Binary As #fnum
Put #fnum, , FileInfoFile
Close #fnum
Exit Function
CleanUp:
ReturnErrorDes = Err.Description
SplitFile = False
'〤opyright Allen Clark Copeland Jr. 1998
End Function
Public Function ReassembleFile(TemplateFileName As String, Optional UseOldFilename As Boolean = True, Optional OutPutName = "C:\Filname.Extention") As Boolean
Dim FileInfo As FileInfo, OutName As String, _
File As SectionedFile, m_LngLoop As Long, OpenName
Dim fnum As Integer
ReassembleFile = True 'Assume Success
fnum = FreeFile
Open TemplateFileName For Binary As #fnum
Get #fnum, , FileInfo 'Get Information on the Previously Saved File(s)
Close #fnum
If UseOldFilename Then
OutName = FileInfo.OrigFileName
Else
OutName = OutPutName
End If
ReDim File.Files(1 To FileInfo.FileCount)
For m_LngLoop = 1 To FileInfo.FileCount
OpenName = FileInfo.OrigFileName & "." & _
Format((FileInfo.FileStartNum - 1 + _
m_LngLoop), "00#")
fnum = FreeFile
Open OpenName For Binary As #fnum
Get #fnum, 1, File.Files(m_LngLoop)
Close #fnum
Next
fnum = FreeFile
Open OutName For Binary As #fnum
For m_LngLoop = 1 To FileInfo.FileCount
Put #fnum, , File.Files(m_LngLoop).Bytes
Next
Close #fnum
End Function
Public Function RetFileName(Text As String)
Dim XText As String, DLines() As String
XText = Text
If Not Right(XText, 1) = "\" Then XText = XText & "\"
SplitDirName CStr(XText), DLines()
RetFileName = DLines(UBound(DLines))
End Function
窗体部分：
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Option Explicit
Private Sub cmdSplit_Click()
Dim err_descr As String
If Not SplitFile(txtFileName.Text, 0, err_descr, CLng(txtFileLength.Text)) Then
MsgBox err_descr
Else
MsgBox "Ok"
End If
End Sub
Private Sub cmdUnsplit_Click()
Dim err_descr As String
If Not ReassembleFile(txtTemplateName.Text, False, txtOutputFile.Text) Then
MsgBox err_descr
Else
MsgBox "Ok"
End If
End Sub
Private Sub Command1_Click()
End
End Sub
Private Sub Form_Load()
Dim dir_name As String
dir_name = App.Path
If Right$(dir_name, 1) <> "\" Then _
dir_name = dir_name & "\"
txtFileName.Text = dir_name & ""
txtTemplateName.Text = dir_name & ""
txtOutputFile.Text = dir_name & ""
End Sub
Private Sub Option1_Click()
txtFileLength = "33554432"
End Sub
Private Sub Option2_Click()
txtFileLength = "1363148.8"
End Sub
Private Sub Option3_Click()
txtFileLength = "67108864"
End Sub
Private Sub Option4_Click()
txtFileLength = "134217728"
End Sub
Private Sub Option5_Click()
txtFileLength = "268435456"
End Sub
Private Sub Option6_Click()
txtFileLength = "536870912"
End Sub
