nkeynes@31: /**
nkeynes@187:  * $Id: util.c,v 1.5 2006-08-01 21:55:38 nkeynes Exp $
nkeynes@31:  *
nkeynes@31:  * Miscellaneous utility functions.
nkeynes@31:  *
nkeynes@31:  * Copyright (c) 2005 Nathan Keynes.
nkeynes@31:  *
nkeynes@31:  * This program is free software; you can redistribute it and/or modify
nkeynes@31:  * it under the terms of the GNU General Public License as published by
nkeynes@31:  * the Free Software Foundation; either version 2 of the License, or
nkeynes@31:  * (at your option) any later version.
nkeynes@31:  *
nkeynes@31:  * This program is distributed in the hope that it will be useful,
nkeynes@31:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@31:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nkeynes@31:  * GNU General Public License for more details.
nkeynes@31:  */
nkeynes@31: 
nkeynes@17: #include "dream.h"
nkeynes@17: 
nkeynes@17: void fwrite_string( char *s, FILE *f )
nkeynes@17: {
nkeynes@17:     uint32_t len = 0;
nkeynes@17:     if( s == NULL ) {
nkeynes@17: 	fwrite( &len, sizeof(len), 1, f );
nkeynes@17:     } else {
nkeynes@17: 	len = strlen(s)+1;
nkeynes@17: 	fwrite( &len, sizeof(len), 1, f );
nkeynes@17: 	fwrite( s, len, 1, f );
nkeynes@17:     }
nkeynes@17: }
nkeynes@17: 
nkeynes@17: int fread_string( char *s, int maxlen, FILE *f ) 
nkeynes@17: {
nkeynes@17:     uint32_t len;
nkeynes@17:     fread( &len, sizeof(len), 1, f );
nkeynes@17:     if( len != 0 ) {
nkeynes@17: 	fread( s, len > maxlen ? maxlen : len, 1, f );
nkeynes@17:     }
nkeynes@17:     return len;
nkeynes@17: }
nkeynes@117: 
nkeynes@117: void fwrite_dump( unsigned char *data, unsigned int length, FILE *f ) 
nkeynes@117: {
nkeynes@117:     unsigned int i, j;
nkeynes@117:     for( i =0; i<length; i+=16 ) {
nkeynes@117: 	fprintf( f, "%08X:", i);
nkeynes@117: 	for( j=i; j<i+16; j++ ) {
nkeynes@117: 	    if( (j % 4) == 0 )
nkeynes@117: 		fprintf( f, " " );
nkeynes@117: 	    if( j < length )
nkeynes@117: 		fprintf( f, " %02X", (unsigned int)(data[j]) );
nkeynes@117: 	    else
nkeynes@117: 		fprintf( f, "   " );
nkeynes@117: 	}
nkeynes@117: 	fprintf( f, "  " );
nkeynes@117: 	for( j=i; j<i+16 && j<length; j++ ) {
nkeynes@117: 	    fprintf( f, "%c", isprint(data[j]) ? data[j] : '.' );
nkeynes@117: 	}
nkeynes@117: 	fprintf( f, "\n" );
nkeynes@117:     }
nkeynes@117: }
nkeynes@187: 
nkeynes@187: 
nkeynes@187: void fwrite_dump32( unsigned int *data, unsigned int length, FILE *f ) 
nkeynes@187: {
nkeynes@187:     unsigned int i, j;
nkeynes@187:     for( i =0; i<length>>2; i+=8 ) {
nkeynes@187: 	fprintf( f, "%08X:", i);
nkeynes@187: 	for( j=i; j<i+8; j++ ) {
nkeynes@187: 	    if( j < length )
nkeynes@187: 		fprintf( f, " %08X", (unsigned int)(data[j]) );
nkeynes@187: 	    else
nkeynes@187: 		fprintf( f, "         " );
nkeynes@187: 	}
nkeynes@187: 	fprintf( f, "\n" );
nkeynes@187:     }
nkeynes@187: }