Reemplazar texto en un archivo de texto usando VBA en Microsoft Excel

Sub ReplaceTextInFile(SourceFile As String, _

sText As String, rText As String)

Dim TargetFile As String, tLine As String, tString As String

Dim p As Integer, i As Long, F1 As Integer, F2 As Integer

TargetFile = "RESULT.TMP"

If Dir(SourceFile) = "" Then Exit Sub

If Dir(TargetFile) <> "" Then

On Error Resume Next

Kill TargetFile

On Error GoTo 0

If Dir(TargetFile) <> "" Then

MsgBox TargetFile & _

" already open, close and delete / rename the file and try again.", _

vbCritical

Exit Sub

End If

End If

F1 = FreeFile

Open SourceFile For Input As F1

F2 = FreeFile

Open TargetFile For Output As F2

i = 1 ' line counter

Application.StatusBar = "Reading data from " & _

TargetFile & " ..."

While Not EOF(F1)

If i Mod 100 = 0 Then Application.StatusBar = _

"Reading line #" & i & " in " & _

TargetFile & " ..."

Line Input #F1, tLine

If sText <> "" Then

ReplaceTextInString tLine, sText, rText

End If

Print #F2, tLine

i = i + 1

Wend

Application.StatusBar = "Closing files ..."

Close F1

Close F2

Kill SourceFile ' delete original file

Name TargetFile As SourceFile ' rename temporary file

Application.StatusBar = False

End Sub

Private Sub ReplaceTextInString(SourceString As String, _

SearchString As String, ReplaceString As String)

Dim p As Integer, NewString As String

Do

p = InStr(p + 1, UCase(SourceString), UCase(SearchString))

If p > 0 Then ' replace SearchString with ReplaceString

NewString = ""

If p > 1 Then NewString = Mid(SourceString, 1, p - 1)

NewString = NewString + ReplaceString

NewString = NewString + Mid(SourceString, _

p + Len(SearchString), Len(SourceString))

p = p + Len(ReplaceString) - 1

SourceString = NewString

End If

If p >= Len(NewString) Then p = 0

Loop Until p = 0

End Sub

Sub TestReplaceTextInFile()

ReplaceTextInFile ThisWorkbook.Path & _

"\ReplaceInTextFile.txt", "|", ";"

' replaces all pipe-characters (|) with semicolons (;)

End Sub