How to replace a string that is enclosed for a couple of tags


Now I have a string like this "start-blablablablablabla-end" in a file, I need to replace the whole string but the deal is that the string between "start-" and "-end", is not always the same (content and size).

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Assume your text string is in the declared text variable "txt".

Dim NewText As String

If Left(txt, 6) = "start-" And Right(txt, 4) = "-end" Then
   'do your string substitution here
   NewText = <whatever>
End If
slightwv (䄆 Netminder) Commented:
I would look at regular expressions.

My straight VB is pretty rusty but check out:

You would want to replace:  "(start-).*(-end)" with whatever you needed.

>>If Left(txt, 6) = "start-" And Right(txt, 4) = "-end" Then

From the related question I believe that string can exist anywhere in a larger string.
Muhammad KhanManager, ITCommented:
Sub Macro1()
Set fso = CreateObject("Scripting.FileSystemObject")
Dim fileStream
Dim s
Dim ifrom
Dim ito
Dim sToReplace
Dim sToBeReplaced

Set fileStream = fso.OpenTextFile("c:\workshop\File1.txt", 1)
sToReplace = "just a test string"

s = fileStream.ReadAll
ifrom = InStr(1, s, "start-", vbTextCompare) + Len("start-")
ito = InStr(1, s, "-end", vbTextCompare)
sToBeReplaced = Mid(s, ifrom, ito - ifrom)
s = Replace(s, sToBeReplaced, sToReplace)

Set fileStream = fso.OpenTextFile("c:\workshop\File1.txt", 2)
fileStream.Write (s)
End Sub

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Martin LissOlder than dirtCommented:
Const TESTDATA = "start-blablablablablabla-end"

Dim intStart As Integer
Dim intEnd As Integer

intStart = InStr(TESTDATA, "start-")
intEnd = InStr(TESTDATA, "-end")

Debug.Print Mid$(TESTDATA, intStart + Len("start-"), intEnd - intStart - Len("start-"))

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Visual Basic Classic

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