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/*
* Guillaume Cottenceau (gc@mandrakesoft.com)
*
* Copyright 2000 MandrakeSoft
*
* This software may be freely redistributed under the terms of the GNU
* public license.
*
* 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.
*
*/
/*
* mar - The Mandrake Archiver
*
* An archiver that supports compression (through zlib).
*
*/
/*
* This code includes the extracting and creating features.
*
*/
#include "mar.h"
#include "mar-extract-only.h"
int
file_size(char *filename)
{
struct stat buf;
if (stat(filename, &buf) != 0)
{
perror(filename);
return -1;
}
return buf.st_size;
}
/* Yes I don't use the datastructure I directly write the final fileformat in memory then write down it.
* Yes it's bad.
*/
/* ``files'' is a NULL-terminated array of char* */
char * fnf_tag = "FILE_NOT_FOUND&";
int
mar_create_file(char *dest_file, char **files)
{
int filenum = 0;
int current_offset_filetable = 0;
int current_delta_rawdata = 0;
int filetable_size;
char * temp_marfile_buffer;
int total_length = 0;
filetable_size = sizeof(char); /* ``char 0'' */
while (files[filenum])
{
int fsiz = file_size(files[filenum]);
if (fsiz == -1)
files[filenum] = fnf_tag;
else {
filetable_size += 2*sizeof(int) /* file_length, data_offset */ + strlen(files[filenum]) + 1;
total_length += fsiz;
}
filenum++;
}
total_length += filetable_size;
temp_marfile_buffer = (char *) malloc(total_length); /* create the whole file in-memory (not with alloca! it can be bigger than typical limit for stack of programs (ulimit -s) */
DEBUG_MAR(printf("D: mar::create_marfile total-length %d\n", total_length););
filenum = 0;
while (files[filenum])
{
if (strcmp(files[filenum], fnf_tag)) {
FILE * f = fopen(files[filenum], "r");
int fsize;
if (!f)
{
perror(files[filenum]);
return -1;
}
/* filename */
strcpy(&(temp_marfile_buffer[current_offset_filetable]), files[filenum]);
current_offset_filetable += strlen(files[filenum]) + 1;
/* file_length */
fsize = file_size(files[filenum]);
if (fsize == -1) return -1;
memcpy(&temp_marfile_buffer[current_offset_filetable], &fsize, sizeof(int));
current_offset_filetable += sizeof(int);
/* data_offset */
memcpy(&temp_marfile_buffer[current_offset_filetable], ¤t_delta_rawdata, sizeof(int));
current_offset_filetable += sizeof(int);
/* data_raw_data */
if (fread(&temp_marfile_buffer[current_delta_rawdata + filetable_size], 1, fsize, f) != (size_t)fsize)
{
perror(files[filenum]);
return -1;
}
fclose(f);
current_delta_rawdata += fsize;
}
filenum++;
}
/* write down ``char 0'' to terminate file table */
memset(&temp_marfile_buffer[current_offset_filetable], 0, sizeof(char));
/* ok, buffer is ready, let's write it on-disk */
{
BZFILE * f = BZ2_bzopen(dest_file, "w9");
if (!f)
{
perror(dest_file);
return -1;
}
if (BZ2_bzwrite(f, temp_marfile_buffer, total_length) != total_length)
{
fprintf(stderr, BZ2_bzerror(f, &z_errnum));
return -1;
}
BZ2_bzclose(f);
}
printf("mar: created archive %s (%d files, length %d)\n", dest_file, filenum, total_length);
return 0;
}
void
print_usage(char *progname)
{
printf("Usage: %s [-lxc] [files..]\n", progname);
exit(0);
}
int
main(int argc, char **argv)
{
if (argc <= 2)
print_usage(argv[0]);
if (argc >= 3)
{
if (strcmp(argv[1], "-l") == 0)
{
char ** contents = mar_list_contents(argv[2]);
if (contents)
while (contents && *contents) {
printf("\t%s\n", *contents);
contents++;
}
exit(0);
}
if ((strcmp(argv[1], "-x") == 0) && argc == 4)
{
int res = mar_extract_file(argv[2], argv[3], "./");
if (res == 1)
fprintf(stderr, "W: file-not-found-in-archive %s\n", argv[3]);
if (res == -1)
exit(-1);
exit(0);
}
if ((strcmp(argv[1], "-c") == 0) && argc >= 4)
{
char **files = (char **) alloca(((argc-3)+1) * sizeof(char *));
int i = 3;
while (i < argc)
{
files[i-3] = argv[i];
i++;
}
files[argc-3] = NULL;
{
int results;
results = mar_create_file(argv[2], files);
if (results != 0)
fprintf(stderr, "E: create-marfile-failed\n");
exit(results);
}
}
}
return 0;
}
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