navit/maptool/buffer.c

/**
 * Navit, a modular navigation system.
 * Copyright (C) 2005-2011 Navit Team
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 */
#include <stdlib.h>
#include "maptool.h"
#include "debug.h"

void
save_buffer(char *filename, struct buffer *b, long long offset)
{
        FILE *f;
        f=fopen(filename,"rb+");
        if (! f)
                f=fopen(filename,"wb+");
                
        dbg_assert(f != NULL);
        fseek(f, offset, SEEK_SET);
        fwrite(b->base, b->size, 1, f);
        fclose(f);
}

void
load_buffer(char *filename, struct buffer *b, long long offset, long long size)
{
        FILE *f;
        long long len;
        int ret;
        if (b->base)
                free(b->base);
        b->malloced=0;
        f=fopen(filename,"rb");
        fseek(f, 0, SEEK_END);
        len=ftell(f);
        if (offset+size > len) {
                size=len-offset;
                ret=1;
        }
        b->size=b->malloced=size;
        fprintf(stderr,"reading "LONGLONG_FMT" bytes from %s at "LONGLONG_FMT"\n", b->size, filename, offset);
        fseek(f, offset, SEEK_SET);
        b->base=malloc(b->size);
        dbg_assert(b->base != NULL);
        fread(b->base, b->size, 1, f);
        fclose(f);
}
1	zoff99	8	/**
2			* Navit, a modular navigation system.
3			* Copyright (C) 2005-2011 Navit Team
4			*
5			* This program is free software; you can redistribute it and/or
6			* modify it under the terms of the GNU General Public License
7			* version 2 as published by the Free Software Foundation.
8			*
9			* This program is distributed in the hope that it will be useful,
10			* but WITHOUT ANY WARRANTY; without even the implied warranty of
11			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12			* GNU General Public License for more details.
13			*
14			* You should have received a copy of the GNU General Public License
15			* along with this program; if not, write to the
16			* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17			* Boston, MA 02110-1301, USA.
18			*/
19			#include <stdlib.h>
20			#include "maptool.h"
21			#include "debug.h"
22
23			void
24			save_buffer(char filename, struct buffer b, long long offset)
25			{
26			FILE *f;
27			f=fopen(filename,"rb+");
28			if (! f)
29			f=fopen(filename,"wb+");
30
31			dbg_assert(f != NULL);
32			fseek(f, offset, SEEK_SET);
33			fwrite(b->base, b->size, 1, f);
34			fclose(f);
35			}
36
37			void
38			load_buffer(char filename, struct buffer b, long long offset, long long size)
39			{
40			FILE *f;
41			long long len;
42			int ret;
43			if (b->base)
44			free(b->base);
45			b->malloced=0;
46			f=fopen(filename,"rb");
47			fseek(f, 0, SEEK_END);
48			len=ftell(f);
49			if (offset+size > len) {
50			size=len-offset;
51			ret=1;
52			}
53			b->size=b->malloced=size;
54			fprintf(stderr,"reading "LONGLONG_FMT" bytes from %s at "LONGLONG_FMT"\n", b->size, filename, offset);
55			fseek(f, offset, SEEK_SET);
56			b->base=malloc(b->size);
57			dbg_assert(b->base != NULL);
58			fread(b->base, b->size, 1, f);
59			fclose(f);
60			}