Lightning Fast Word Counting

Description

A small ultra-fast function used to count the number of words in a string.

More Info

Text -the string in which to count words

The number of words counted is returned as the value of the function itself (as a long).

As this function makes use of CopyMemory it should be allowed to run until finished. Stopping the project in the IDE could result in VB crashing (as with ALL API calls).

Submitted On
By	Chris_Lucas
Level	Advanced
User Rating	5.0 (20 globes from 4 users)
Compatibility	VB 6.0
Category	String Manipulation
World	Visual Basic
Archive File

API Declarations

Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" ( _
  Destination As Any, _
  Source As Any, _
  ByVal Length As Long)

Source Code

' © Christopher Lucas 2001
' You may freely use and distribute this code
' in all your applications. Recognition is
' appreciated though.
Public Function WordCount(Text As String) As Long
  Dim dest() As Byte
  Dim i As Long
  If LenB(Text) Then
    ' Move the string's byte array into dest()
    ReDim dest(LenB(Text))
    CopyMemory dest(0), ByVal StrPtr(Text), LenB(Text) - 1
    ' Now loop through the array and count the words
    For i = 0 To UBound(dest) Step 2
      If dest(i) > 32 Then
         Do Until dest(i) < 33
          i = i + 2
         Loop
         WordCount = WordCount + 1
      End If
    Next i
    Erase dest
  Else
    WordCount = 0
  End If
End Function