home *** CD-ROM | disk | FTP | other *** search
- PROC main()
- DEF buffer, filehandle, len, filename
- filename:='datafile'
- /* Get the length of data in the file */
- IF 0<(len:=FileLength(filename))
- /* Allocate just enough room for the data + a terminating NIL */
- IF buffer:=New(len+1)
- IF filehandle:=Open(filename, OLDFILE)
- /* Read whole file, checking amount read */
- IF len=Read(filehandle, buffer, len)
- /* Terminate buffer with a NIL just in case... */
- buffer[len]:=NIL
- process_buffer(buffer, len)
- ELSE
- WriteF('Error: File reading error\n')
- ENDIF
- /* If Open() succeeded then we must Close() the file */
- Close(filehandle)
- ELSE
- WriteF('Error: Failed to open "\s"\n', filename)
- ENDIF
- /* Deallocate buffer (not really necessary in this example) */
- Dispose(buffer)
- ELSE
- WriteF('Error: Insufficient memory to load file\n')
- ENDIF
- ELSE
- WriteF('Error: "\s" is an empty file\n', filename)
- ENDIF
- ENDPROC
-
- /* buffer is like a normal string since it's NIL-terminated */
- PROC process_buffer(buffer, len)
- DEF start=0, end
- REPEAT
- /* Find the index of a linefeed after the start index */
- end:=InStr(buffer, '\n', start)
- /* If a linefeed was found then terminate with a NIL */
- IF end<>-1 THEN buffer[end]:=NIL
- process_record(buffer+start)
- start:=end+1
- /* We've finished if at the end or no more linefeeds */
- UNTIL (start>=len) OR (end=-1)
- ENDPROC
-
- PROC process_record(line)
- DEF i=1, start=0, end, s
- /* Show the whole line being processed */
- WriteF('Processing record: "\s"\n', line)
- REPEAT
- /* Find the index of a comma after the start index */
- end:=InStr(line, ',', start)
- /* If a comma was found then terminate with a NIL */
- IF end<>-1 THEN line[end]:=NIL
- /* Point to the start of the field */
- s:=line+start
- IF s[]
- /* At this point we could do something useful... */
- WriteF('\t\d) "\s"\n', i, s)
- ELSE
- WriteF('\t\d) Empty Field\n', i)
- ENDIF
- /* The new start is after the end we found */
- start:=end+1
- INC i
- /* Once a comma is not found we've finished */
- UNTIL end=-1
- ENDPROC
-