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/* libpbm4.c - pbm utility library part 4
Copyright (C) 1988 by Jef Poskanzer.
Copyright (C) 2011 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#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", 0,0,0,0,0 );
ch = (char) ich;
if ( ch == '#' )
{
do
{
ich = getc( file );
if ( ich == EOF )
pm_error( "EOF / read error", 0,0,0,0,0 );
ch = (char) ich;
}
while ( ch != '\n' );
}
return ch;
}
unsigned char
pbm_getrawbyte( file )
FILE* file;
{
register int iby;
iby = getc( file );
if ( iby == EOF )
pm_error( "EOF / read error", 0,0,0,0,0 );
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' );
if ( ch < '0' || ch > '9' )
pm_error( "junk in file where an integer should be", 0,0,0,0,0 );
i = 0;
do
{
i = i * 10 + ch - '0';
ch = pbm_getc( file );
}
while ( ch >= '0' && ch <= '9' );
return i;
}
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