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- /* libpbm4.c - pbm utility library part 4
- **
- ** Copyright (C) 1988 by Jef Poskanzer.
- **
- ** Permission to use, copy, modify, and distribute this software and its
- ** documentation for any purpose and without fee is hereby granted, provided
- ** that the above copyright notice appear in all copies and that both that
- ** copyright notice and this permission notice appear in supporting
- ** documentation. This software is provided "as is" without express or
- ** implied warranty.
- */
-
- #include "pbm.h"
- #include "libpbm.h"
-
- char
- pbm_getc( file )
- FILE* file;
- {
- register int ich;
- register char ch;
-
- ich = getc( file );
- if ( ich == EOF )
- pm_error( "EOF / read error" );
- ch = (char) ich;
-
- if ( ch == '#' )
- {
- do
- {
- ich = getc( file );
- if ( ich == EOF )
- pm_error( "EOF / read error" );
- ch = (char) ich;
- }
- while ( ch != '\n' && ch != '\r' );
- }
-
- return ch;
- }
-
- unsigned char
- pbm_getrawbyte( file )
- FILE* file;
- {
- register int iby;
-
- iby = getc( file );
- if ( iby == EOF )
- pm_error( "EOF / read error" );
- return (unsigned char) iby;
- }
-
- int
- pbm_getint( file )
- FILE* file;
- {
- register char ch;
- register int i;
-
- do
- {
- ch = pbm_getc( file );
- }
- while ( ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r' );
-
- if ( ch < '0' || ch > '9' )
- pm_error( "junk in file where an integer should be" );
-
- i = 0;
- do
- {
- i = i * 10 + ch - '0';
- ch = pbm_getc( file );
- }
- while ( ch >= '0' && ch <= '9' );
-
- return i;
- }
-