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/*
* pack.c
* Copyright (C) 1998 Brainchild Design - http://brainchilddesign.com/
*
* Copyright (C) 2001 "timecop" <timecop@japan.co.jp>
*
* Copyright (C) 2002 Florian Schulze <crow@icculus.org>
*
* This file is part of Jump 'n Bump.
*
* Jump 'n Bump 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 2 of the License, or
* (at your option) any later version.
*
* Jump 'n Bump 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 <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#ifdef LINUX
#include <getopt.h>
#endif
#ifndef _WIN32
#include <unistd.h>
#else
#include <io.h>
#endif
typedef struct {
char filename[12];
unsigned int offset;
unsigned int size;
} DirEntry;
#ifndef O_BINARY
#define O_BINARY 0
#endif
int main(int argc, char **argv)
{
int fd;
DirEntry *datafile;
int num_entries, i;
int c;
char *outfile = NULL;
int offset = 0;
#ifdef LINUX
while ((c = getopt(argc, argv, "o:")) != EOF) {
switch (c) {
case 'o':
if (optarg) {
outfile = strdup(optarg);
}
break;
}
}
argc -= optind;
argv += optind;
#else
c = 1;
while (c<argc) {
if (argv[c][0]=='-') {
if (argv[c][1]=='o') {
if ( ((c+1)<argc) && (argv[c+1]) ) {
outfile = strdup(argv[c+1]);
c++;
}
c++;
break;
}
}
c++;
}
argc -= c;
argv += c;
#endif
if (outfile == NULL) {
printf("You must specify output filename with -o\n");
exit(1);
}
if (argc == 0) {
printf("You must specify some files to pack, duh\n");
exit(1);
}
num_entries = argc;
/* prepare to pack things - get sizes and calculate offsets */
printf("%u files to pack\n", num_entries);
datafile = calloc(num_entries, sizeof(DirEntry));
/* skip past the directory structure */
offset = 4 + (num_entries * 20);
for (i = 0; i < num_entries; i++) {
struct stat dummy;
if (stat(argv[i], &dummy)) {
fprintf(stderr, "%s is not accessible: ", argv[i]);
perror("");
exit(1);
}
if (strlen(argv[i]) > 12) {
fprintf(stderr, "filename %s is longer than 12 chars\n", argv[i]);
exit(1);
}
strncpy(datafile[i].filename, argv[i], 12);
datafile[i].size = dummy.st_size;
/* num_entries * (12 + 8) */
datafile[i].offset = offset;
offset += datafile[i].size;
}
/* here, we checked that all files are ok, and ready to roll the packfile */
fd = open(outfile, O_RDWR | O_CREAT | O_BINARY, 0644);
if (fd == -1) {
perror("opening packfile");
exit(1);
}
printf("Opened %s\n", outfile);
/* write number of entries in this data file */
{
char temp;
temp = (num_entries >> 0) & 0xff;
write(fd, &temp, 1);
temp = (num_entries >> 8) & 0xff;
write(fd, &temp, 1);
temp = (num_entries >> 16) & 0xff;
write(fd, &temp, 1);
temp = (num_entries >> 24) & 0xff;
write(fd, &temp, 1);
}
/* write the directory structure */
for (i = 0; i < num_entries; i++) {
char temp;
write(fd, &datafile[i].filename, 12);
temp = (datafile[i].offset >> 0) & 0xff;
write(fd, &temp, 1);
temp = (datafile[i].offset >> 8) & 0xff;
write(fd, &temp, 1);
temp = (datafile[i].offset >> 16) & 0xff;
write(fd, &temp, 1);
temp = (datafile[i].offset >> 24) & 0xff;
write(fd, &temp, 1);
temp = (datafile[i].size >> 0) & 0xff;
write(fd, &temp, 1);
temp = (datafile[i].size >> 8) & 0xff;
write(fd, &temp, 1);
temp = (datafile[i].size >> 16) & 0xff;
write(fd, &temp, 1);
temp = (datafile[i].size >> 24) & 0xff;
write(fd, &temp, 1);
}
/* write in the actual files */
for (i = 0; i < num_entries; i++) {
int infd;
char *buf;
printf("adding %s ", argv[i]);
infd = open(argv[i], O_RDONLY | O_BINARY);
if (infd == -1) {
perror("opening file");
exit(1);
}
buf = malloc(datafile[i].size + 16);
read(infd, buf, datafile[i].size);
close(infd);
write(fd, buf, datafile[i].size);
free(buf);
printf(" OK\n");
}
close(fd);
return 0;
}
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