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Working with Multiple Pointers in Binary Buffers

Keywords: 	 search replace binary buffers

Question:

	:25:07262464211000101
	:28C:03689/001

Answer:

Option #2: Here's my version. Counting those BinaryBuffers pointers is a tricky business.

:Start
Replace="900/"
Tempfile="c:\incoming\logicin.txt"
foundone=0
      insize=FileSize(TempFile)
                outsize=insize*2
      inbuffer= BinaryAlloc(insize)
      outbuffer=BinaryAlloc(outsize)
      BinaryRead(inbuffer, TempFile)
      outptr=0
      inptr=0
                while 1

                          ptr1=BinaryIndexNC(inbuffer,inptr,"07262464211000101",@fwdscan)
                          ptr2=BinaryIndexNC(inbuffer,inptr,":28C:",@fwdscan)
                          ptr3=BinaryIndexNC(inbuffer,ptr2,"/",@Fwdscan)
                          If ptr1==0 || ptr2==0 || ptr3==0 then break
                          foundone=1

                          BinaryCopy(OutBuffer,outptr,Inbuffer,inptr, ptr2+4-inptr+1)
           outptr=BinaryEODGet(OutBuffer)
           BinaryPokeStr(outbuffer,outptr,Replace)
           outptr=BinaryEODGet(OutBuffer)
                          inptr=ptr3+1

                        
        endwhile
;write rest of buffer
BinaryCopy(outbuffer,outptr,inbuffer,inptr,insize-inptr)

BinaryWrite(outbuffer,"c:\incoming\logincout.txt")

Message("All","Done")

Article ID:   W14112

Filename:   Example of Keeping Track of Multiple Pointers.txt

File Created: 2001:01:03:09:30:18

Last Updated: 2001:01:03:09:30:18