Copy specific lines from text files into excel

Question

I have developed the below code to open a large number of text files (within the same folder) and copy everything from each file into excel (one cell for each line of text file & one row for each text file).

However, I do not require all of the data from the text files and it is slowing down the process. The text files are in following format:

DATASET UNSTRUCTURED_GRID
POINTS 5 float
0.096853 0.000000 0.111997
0.096853 -0.003500 0.111997
0.096890 0.000000 0.084015
0.096853 -0.003500 0.111997
0.096890 -0.003500 0.084015
CELL_DATA 5
SCALARS pressure float 1
LOOKUP_TABLE default
-0.000000
-0.000000
-3.000000
-2.000000
-6.000000

The data that I need to copy from this file is the second batch of numbers (below "LOOKUP_TABLE default"). The number of lines in this example is five (as stated on line starting "CELL_DATA" but this number can change from file to file.

In summary, I'm looking my code to only copy this last batch of numbers into excel instead of everything but I'm at a loss on how to tackle this.

Any help or advice would be greatly appreciated.

Sub ImportTextFile()

Dim RowNdx As Integer
Dim ColNdx As Integer
Dim TempVal As String
Dim WholeLine As String
Dim Pos As Integer
Dim NextPos As Long
Dim SaveColNdx As Integer

FName = "E:\zdump\"
MyFile = Dir(FName & "*.txt")
Sep = vbLf

SaveColNdx = ActiveCell.Column
RowNdx = ActiveCell.Row

Do While MyFile <> ""
    Open (FName & MyFile) For Input As #1

    While Not EOF(1)
        Line Input #1, WholeLine
        If Right(WholeLine, 1) <> Sep Then
            WholeLine = WholeLine & Sep
        End If
        ColNdx = SaveColNdx
        Pos = 1
        NextPos = InStr(Pos, WholeLine, Sep)
        While NextPos >= 1
            TempVal = Mid(WholeLine, Pos, NextPos - Pos)
            Cells(RowNdx, ColNdx).Value = TempVal
            Pos = NextPos + 1
            ColNdx = ColNdx + 1
            NextPos = InStr(Pos, WholeLine, Sep)
        Wend
        RowNdx = RowNdx + 1
    Wend
    Close #1
    MyFile = Dir()
    Debug.Print text
Loop End Sub

Answer 1

Give this a try:

Dim RowNdx As Integer
Dim ColNdx As Integer
Dim TempVal As String
Dim WholeLine As String
Dim Pos As Integer
Dim NextPos As Long
Dim SaveColNdx As Integer
Dim SaveRowNdx As Long
Dim FoundData As Boolean
Dim NumberOfData As Long

FName = "E:\zdump\"
MyFile = Dir(FName & "*.txt")
Sep = vbLf

ColNdx = ActiveCell.Column
RowNdx = ActiveCell.Row
SaveRowNdx = RowNdx

Do While MyFile <> ""
    Open (FName & MyFile) For Input As #1

    While Not EOF(1)
        Line Input #1, WholeLine

        If Right(WholeLine, 1) <> Sep Then
            WholeLine = WholeLine & Sep
        End If
        Pos = 1
        NextPos = InStr(Pos, WholeLine, Sep)
        While NextPos >= 1
            TempVal = Mid(WholeLine, Pos, NextPos - Pos)

            If FoundData = False Then
                If InStr(TempVal, "CELL_DATA") Then
                    NumberOfData = Val(Right(TempVal, Len(TempVal) - Len(Left(TempVal, Len("CELL_DATA") + 1))))
                End If

                If InStr(TempVal, "LOOKUP_TABLE default") <> 0 Then
                    FoundData = True
                End If

                Pos = NextPos + 1
                NextPos = InStr(Pos, WholeLine, Sep)
            Else
                If NumberOfData <> 0 Then
                    Cells(RowNdx, ColNdx).Value = TempVal
                    Pos = NextPos + 1
                    RowNdx = RowNdx + 1
                    NextPos = InStr(Pos, WholeLine, Sep)
                    NumberOfData = NumberOfData - 1
                End If
            End If
        Wend

    Wend
    Close #1
    FoundData = False
    ColNdx = ColNdx + 1
    Cells(SaveRowNdx, ColNdx).Activate
    RowNdx = SaveRowNdx
    MyFile = Dir()
    'Debug.Print Text
Loop