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/*
* Copyright (c) 2013 Stefan Bolte <portix@gmx.net>
*
* 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 of the License, 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "exar.h"
enum {
EXAR_FLAG_V = 1<<0,
EXAR_FLAG_P = 1<<3,
EXAR_FLAG_U = 1<<4,
EXAR_FLAG_E = 1<<6,
EXAR_FLAG_D = 1<<7,
EXAR_FLAG_L = 1<<8,
EXAR_FLAG_S = 1<<9,
EXAR_FLAG_A = 1<<10,
};
#ifndef MIN
#define MIN(X, Y) ((X) > (Y) ? (Y) : (X))
#endif
#ifndef MAX
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
#endif
#define EXAR_OPTION_FLAG (0xffff & ~(0x7))
#define EXAR_CHECK_FLAG(x, flag) !!(((x) & (flag)) && !((x) & ( (EXAR_OPTION_FLAG)^(flag) ) ))
void
help(int ret)
{
printf("USAGE: \n"
" exar option [arguments]\n\n"
"OPTIONS:\n"
" h Print this help and exit.\n"
" a[v] archive file Appends a file or directory to the archive\n"
" d[v] archive file Deletes a file from an archive, the file path is the\n"
" relative file path of the file in the archive\n"
" e[v] archive file Extracts a file from an archive and writes the content\n"
" to stdout, the archive is not modified, the file path \n"
" is the relative file path of the file in the archive.\n"
" l[v] archive List archive content\n"
" p[v] path Pack file or directory 'path'.\n"
" s[v] archive file Search for a file and write the content to stdout, the \n"
" archive is not modified, the filename is the basename\n"
" plus suffix of the file in the archive, all directory\n"
" parts are stripped\n"
" u[v] file [dir] Pack 'file' to directory 'dir' or to current directory.\n"
" v Verbose, pass multiple times (up to 3) to \n"
" get more verbose messages.\n\n"
"EXAMPLES:\n"
" exar p /tmp/foo -- pack /tmp/foo to foo.exar\n"
" exar s foo.js > foo.js -- Extract foo.js from the archive\n"
" exar uvvv foo.exar -- unpack foo.exar to current directory,\n"
" verbosity level 3\n"
" exar vu foo.exar /tmp -- unpack foo.exar to /tmp, verbosity\n"
" level 1\n");
exit(ret);
}
static void
extract(const char *archive, const char *path,
unsigned char * (*extract_func)(const char *, const char *, off_t *))
{
off_t s;
unsigned char *content = extract_func(archive, path, &s);
if (content != NULL)
{
if (fwrite(content, 1, s, stdout) != (size_t)s)
{
fprintf(stderr, "An error occured\n");
}
free(content);
}
}
int
main (int argc, char **argv)
{
int flag = 0;
if (argc < 3)
{
help(EXIT_FAILURE);
}
const char *options = argv[1];
while (*options)
{
switch (*options)
{
case 'a' :
flag |= EXAR_FLAG_A;
break;
case 'd' :
flag |= EXAR_FLAG_D;
break;
case 'e' :
flag |= EXAR_FLAG_E;
break;
case 'l' :
flag |= EXAR_FLAG_L;
break;
case 'p' :
flag |= EXAR_FLAG_P;
break;
case 's' :
flag |= EXAR_FLAG_S;
break;
case 'u' :
flag |= EXAR_FLAG_U;
break;
case 'v' :
flag |= MAX(EXAR_FLAG_V, MIN(EXAR_VERBOSE_MASK, ((flag & EXAR_VERBOSE_MASK) << 1)));
break;
case 'h' :
help(EXIT_SUCCESS);
default :
help(EXIT_FAILURE);
}
options++;
}
if (flag & EXAR_VERBOSE_MASK)
exar_verbose(flag);
if (EXAR_CHECK_FLAG(flag, EXAR_FLAG_U))
exar_unpack(argv[2], argv[3]);
else if (EXAR_CHECK_FLAG(flag, EXAR_FLAG_A) && argc > 3)
exar_append(argv[2], argv[3]);
else if (EXAR_CHECK_FLAG(flag, EXAR_FLAG_P))
exar_pack(argv[2]);
else if (EXAR_CHECK_FLAG(flag, EXAR_FLAG_L))
exar_info(argv[2]);
else if (EXAR_CHECK_FLAG(flag, EXAR_FLAG_D) && argc > 3)
exar_delete(argv[2], argv[3]);
else if (EXAR_CHECK_FLAG(flag, EXAR_FLAG_E) && argc > 3)
extract(argv[2], argv[3], exar_extract);
else if (EXAR_CHECK_FLAG(flag, EXAR_FLAG_S) && argc > 3)
extract(argv[2], argv[3], exar_search_extract);
else
help(EXIT_FAILURE);
return EXIT_SUCCESS;
}
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