我必须在VB6中编写一个文本文件.我需要附加和utf-8编码.
我尝试了两个解决方案,一个使用“TextStream”,另一个使用“ADODB.Stream”.
第一个：
Set fsoFile = fso.OpenTextFile(FileIn(fi),ForAppending,True)
fsoFile.WriteLine "<tag>kkkjòòkkkkjlòlk</tag>"
fsoFile.Close
附加效果不错,但我如何编写utf-8编码？
第二个：
Dim ST As ADODB.Stream Set ST = New ADODB.Stream ST.Mode = adModeReadWrite ST.Type = adTypeText ST.Charset = "UTF-8" ST.Open ST.LoadFromFile FileIn(fi) ST.Position = ST.Size ST.WriteText "<tag>kkkjòòkkkkjlòlk</tag>" ST.SaveToFile FileIn(fi) ST.Close
在utf-8中正确写入,但我不能附加写入文件,但只能使用“adSaveCreateOverWrite”.
我怎样才能做到这一点？还有另一种方式吗？
非常感谢你.
您可以将二进制I / O与API调用结合使用以执行到UTF-8的转换：
Option Explicit
Private Const CP_UTF8 As Long = 65001
Private Declare Function WideCharToMultiByte Lib "kernel32" ( _
ByVal CodePage As Long,_
ByVal dwFlags As Long,_
ByVal lpWideCharStr As Long,_
ByVal cchWideChar As Long,_
ByVal lpMultiByteStr As Long,_
ByVal cchMultiByte As Long,_
ByVal lpDefaultChar As Long,_
ByVal lpUsedDefaultChar As Long) As Long
Private Function OpenAppendUTF8(ByVal FileName As String) As Integer
OpenAppendUTF8 = FreeFile(0)
Open FileName For Binary Access Write As #OpenAppendUTF8
Seek #OpenAppendUTF8,LOF(OpenAppendUTF8) + 1
End Function
Private Sub WriteUTF8( _
ByVal FNum As Integer,_
ByVal Text As String,_
Optional ByVal NL As Boolean)
Dim lngResult As Long
Dim UTF8() As Byte
If NL Then Text = Text & vbNewLine
lngResult = WideCharToMultiByte(CP_UTF8,StrPtr(Text),Len(Text),_
0,0)
If lngResult > 0 Then
ReDim UTF8(lngResult - 1)
WideCharToMultiByte CP_UTF8,_
VarPtr(UTF8(0)),lngResult,0
Put #FNum,UTF8
End If
End Sub
Private Sub Main()
Dim F As Integer
F = OpenAppendUTF8("test.txt")
WriteUTF8 F,"Hello"
WriteUTF8 F,ChrW$(&H2026&)
WriteUTF8 F,"World",True
Close #F
MsgBox "Done"
End Sub