Search Text File

Anyone know the best way to search through a text file for a specific string?

Load the entire file into a String variable and use InStr()

Hi
here is a little parser that i jsut threw together so that i could change stuff on around 150 web pages for my site relaunch :D ...
You can modify as required
Regards
Stuart

VB Code:

'2 command buttons, 1 label and 1 filelist box
Dim MyPath As String
Dim FileLoop As Long
Dim MyString As String
Dim MyFile As String
Dim MyLen As Long
Dim MyFind As String
Dim MyReplace As String
Dim MyCopy As String
Dim MyLenCheck As Double
Dim MyCounter As Long
 
Private Sub Form_Load()
    MyPath = "C:\My Documents\MyWeb"
    
    File1.Path = MyPath
    File1.Pattern = "*.htm"
    FileLoop = File1.ListCount
    MyCounter = 0
    File1.ListIndex = MyCounter
End Sub
 
Private Sub Command1_Click()
    File1.ListIndex = MyCounter
    
    MyFile = MyPath & "\" & File1.List(MyCounter)
    MyLen = FileLen(MyFile)
    
    Open MyFile For Input As #1
    MyString = Input(MyLen, #1)
    Close #1
    
    MyFind = "Whatever"
    MyReplace = "Whats It"
    
    MyCopy = Replace(MyString, MyFind, MyReplace)
    MyLenCheck = (Len(MyCopy) - Len(MyString)) / (Len(MyReplace) - Len(MyFind))
    Label1 = MyLenCheck
    
    Command2.SetFocus
End Sub
 
Private Sub Command2_Click()
    Open MyFile For Output As #1
    Print #1, MyCopy
    Close #1
    
    MyCounter = MyCounter + 1
    Command1.SetFocus
    If MyCounter >= FileLoop Then Command2.Enabled = False
End Sub

Thanks guys, you are the greatest.

Another (aka better ;)) approach :

VB Code:

Private Sub Form_Load()
    MsgBox "Is " & Chr(34) & "SET" & Chr(34) & " in c:\autoexec.bat : " & isStringInFile("SET", "c:\autoexec.bat")
End Sub
 
Private Function isStringInFile(strString As String, strFile As String) As Boolean
    Open strFile For Input As #1
        isStringInFile = InStr(Input(LOF(1), 1), strString) <> 0
    Close #1
End Function

Ahhhh BOLLOX!! :D geesh i threw that together in 5 mins cos i didnt want to face changing html in lotsa pages. I am now a convert to """ instead of chr$(34) cos it gets just too long when replacing lotsa html code

B·O·L·L·O·X
X·B·O·L·L·O
O·X·B·O·L·L
L·O·X·B·O·L
L·L·O·X·B·O
O·L·L·O·X·B
B·O·L·L·O·X
:D

So plenderj, once i determin a line is in a file, how do i delete that line or word?

Use can use Replace().

VB Code:

Text1.text=Replace(Expression As String,Find As String,Replace As String,1,-1,vbTextCompare )

heh like the avatar :)

Thx you :)