buen dia alguien me podria explicar este codigo de VBA
Código PHP:
Public Function GeneradorXml(FullPath As String, FmtoName As String, Anexo As String) As Boolean
Application.ScreenUpdating = False
On Error GoTo ErrorHandler
Dim colIndex As Integer
Dim rwIndex As Integer
Dim asCols() As String
Dim oWorkSheet As Worksheet
Dim Datosworksheet As Worksheet
Dim sName As String
Dim lCols As Long, lRows As Long, campo As Long
Dim iFileNum As Integer
Set oWorkSheet = ThisWorkbook.Worksheets(1)
sName = oWorkSheet.Name
lCols = oWorkSheet.Columns.Count
lRows = 2
ReDim asCols(lCols) As String
iFileNum = FreeFile
Open FullPath For Output As #iFileNum
Worksheets(FmtoName).Activate
datosname = Worksheets(FmtoName).Name
datoscols = Worksheets(FmtoName).Columns.Count
datosrows = Worksheets(FmtoName).Rows.Count
campo = 0
For k = 0 To datoscols - 1
If Trim(Cells(1, k + 1).Value) = "" Then Exit For
Next k
If k = 0 Then GoTo ErrorHandler
datoscols = k
For m = 0 To datosrows - 1
If Trim(Cells(m + 1, 1).Value) = "" Then Exit For
Next m
If m = 0 Then GoTo ErrorHandler
datosrows = m
For i = 4 To datosrows
If Trim(Cells(i, 1).Value) = "" Then Exit For
For j = 2 To datoscols
campo = Cells(3, j).Value
espaciosalf = String((campo - Len(Trim(Cells(i, j).Value))), " ")
espacios = String((campo - Len(Trim(Cells(i, j).Value))), "0")
If (Cells(2, j).Value) = "Num" Then
Print #iFileNum, espacios & Trim(Cells(i, j).Value);
Else
Print #iFileNum, Trim(Cells(i, j).Value) & espaciosalf;
End If
Next j
Print #iFileNum, vbLine
Next i
ExportToXml = True
MsgBox "Archivo Generado Correctamente en c:\" & FmtoName & ".DAT ", vbInformation
oWorkSheet.Activate
End
ErrorHandler:
If iFileNum > 0 Then Close #iFileNum
MsgBox "No se pudo generar el archivo " & FmtoName & ".TXT' " & vbCrLf & vbCrLf & _
"1-. Verifique y corrija el siguiente campo que excedio el espacio asignado" & vbCrLf & vbCrLf & _
"HOJA : " & datosname & vbCrLf & "COLUMNA : " & Cells(1, j).Value & vbCrLf & "FILA : " _
& i & vbCrLf & vbCrLf & "Campo : '" & Cells(i, j) & "" & vbCrLf & "Ancho Maximo del Campo : " & Cells(3, j).Value _
& vbCrLf & "Ancho del Registro : " & Len(Trim(Cells(i, j).Value)), vbCritical
oWorkSheet.Activate
Exit Function
End Function
