Power-Programmierung/CD1.mdf/clarion/library/memoed/me_util.cla

Text File | 1992-02-15 | 5.5 KB | 174 lines

!═════════════════════════════════════════════════════════════════════════
!
!  %%keyword%% '%n'
!  'ME_UTIL.CLA' - Utility Library functions for MEMOEDIT
!
!  %%keyword%% '%v'
!  Revision Number: '1'
!  %%keyword%% '%d'
!  Revision Date  : '15-Feb-92'
!
!  Copyright : Bobcat Systems (c) 1992
!  Author    : Robert J. Pupazzoni
!           CIS:[70441,204]
!
!  Compiler  : Clarion Professional Developer v. 2.1, Batch 2105
!
!
!  DESCRIPTION
!
!    This module contains various generic funcitons used in MEMOEDIT.
!
!═════════════════════════════════════════════════════════════════════════

ME_Util         MEMBER()

! ═════════════════════════════════════════════════════════════════════════
!                 Find Next Word Left
! ═════════════════════════════════════════════════════════════════════════
Word_Left    FUNCTION( sLine, ibCol )

         ! Parameters:
sLine         STRING(255)             ! Line of text
ibCol         BYTE                 ! Column to start in

         ! Locals:
aLine         BYTE,DIM(255),OVER(sLine)         ! String array alias

  CODE
  LOOP WHILE (ibCol > 0)             ! Loop
    IF aLine[ibCol] <> 32 THEN BREAK.         !   Break on non-space
    ibCol -= 1                     !   Decrement column index
  .                         ! End loop
  LOOP WHILE (ibCol > 0)             ! Loop
    IF aLine[ibCol] = 32 THEN BREAK.         !   Break on space
    ibCol -= 1                     !   Decrement column index
  .                         ! End loop
  RETURN( ibCol+1 )                 !


! ═════════════════════════════════════════════════════════════════════════
!               Find Next Word Right
! ═════════════════════════════════════════════════════════════════════════
Word_Right   FUNCTION( sLine, ibCol )

         ! Parameters:
sLine         STRING(255)             ! Line of text
ibCol         BYTE                 ! Column to start in

         ! Locals:
aLine         BYTE,DIM(255),OVER(sLine)         ! String array alias
ibMaxLen     BYTE                 ! Max. length of string

  CODE
  ibMaxLen = LEN(CLIP(sLine))             ! Get max length
  LOOP WHILE (ibCol <= ibMaxLen)         ! Loop
    IF aLine[ibCol] = 32 THEN BREAK.         !   Break on space
    ibCol += 1                     !   Increment column index
  .                         ! End loop
  LOOP WHILE (ibCol <= ibMaxLen)         ! Loop
    IF aLine[ibCol] <> 32 THEN BREAK.         !   Break on non-space
    ibCol += 1                     !   Increment column index
  .                         ! End loop
  RETURN( ibCol )                 !


! ═════════════════════════════════════════════════════════════════════════
!             Insert Characters in String
! ═════════════════════════════════════════════════════════════════════════
Str_Insert   FUNCTION( sSource, sTarget, ibIndex )

         ! Parameters:
sSource         EXTERNAL                 ! String to insert
sTarget         EXTERNAL                 ! String to insert into
ibIndex         BYTE                 ! Position to insert into

         ! Return:
sRetVal         STRING(255)             ! Returned string

  CODE
  IF CLIP(sSource)                 ! If not all spaces
    sRetVal = SUB(sTarget, 1, ibIndex-1) & |     !   Insert string
          CLIP(sSource)         & |     !
          SUB(sTarget, ibIndex, 255)     !
  ELSE                         ! Else
    sRetVal = SUB(sTarget, 1, ibIndex-1) & |     !   Insert a space
          ' '             & |     !
          SUB(sTarget, ibIndex, 255)     !
  .                         ! Endif
  RETURN( sRetVal )                 ! Return result


! ═════════════════════════════════════════════════════════════════════════
!             Delete Characters in String
! ═════════════════════════════════════════════════════════════════════════
Str_Delete   FUNCTION( sString, ibIndex, ibCount )

         ! Parameters:
sString         EXTERNAL                 ! String to operate on
ibIndex         BYTE                 ! Start index
ibCount         BYTE                 ! # of chars to delete

         ! Return:
sRetVal         STRING(255)             ! Returned string

  CODE
  sRetVal = SUB(sString, 1, ibIndex-1) & |     ! Delete string portion
        SUB(sString, ibIndex+ibCount, 255)     !
  RETURN( sRetVal )                 ! Return result


! ═════════════════════════════════════════════════════════════════════════
!            Remap Strings Within Another String
! ═════════════════════════════════════════════════════════════════════════
Str_ReMap    FUNCTION( sString, sFrom, sTo )

         ! Parameters:
sString         EXTERNAL                 ! String to operate on
sFrom         EXTERNAL                 ! 'From' string
sTo         EXTERNAL                 ! 'To' string

         ! Return:
sRetVal         STRING(255)             ! Returned string

         ! Locals:
ibIndex         LONG                 ! Loop index

  CODE
  sRetVal = sString                 ! Copy to string
  ibIndex = INSTRING(sFrom, sRetVal, 1)         ! Get first ocurrence
  LOOP WHILE ibIndex                 ! Loop while found
    sRetVal = Str_Delete(sRetVal, ibIndex, LEN(CLIP(sFrom)))
    sRetVal = Str_Insert(sTo, sRetVal, ibIndex)     !   Replace ocurrence
    ibIndex = INSTRING(sFrom, sRetVal, 1, ibIndex+LEN(CLIP(sTo)))
  .                         ! End loop
  RETURN( sRetVal )                 ! Return result


! ═════════════════════════════════════════════════════════════════════════
!              Return Greater of Two Integers
! ═════════════════════════════════════════════════════════════════════════
Greater_Of   FUNCTION( ilArg1, ilArg2 )

         ! Parameters:
ilArg1         LONG                 ! Argument #1
ilArg2         LONG                 ! Argument #2

  CODE
  IF ilArg1 > ilArg2 THEN RETURN(ilArg1) ELSE RETURN(ilArg2).


! ═════════════════════════════════════════════════════════════════════════
!              Return Lesser of Two Integers
! ═════════════════════════════════════════════════════════════════════════
Lesser_Of    FUNCTION( ilArg1, ilArg2 )

         ! Parameters:
ilArg1         LONG                 ! Argument #1
ilArg2         LONG                 ! Argument #2

  CODE
  IF ilArg1 < ilArg2 THEN RETURN(ilArg1) ELSE RETURN(ilArg2).