busybox/archival/unlzma.c
Rob Landley d921b2ecc0 Remove bb_ prefixes from xfuncs.c (and a few other places), consolidate
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only
had one user), clean up lots of #includes...  General cleanup pass.  What I've
been doing for the last couple days.

And it conflicts!  I've removed httpd.c from this checkin due to somebody else
touching that file.  It builds for me.  I have to catch a bus.  (Now you know
why I'm looking forward to Mercurial.)
2006-08-03 15:41:12 +00:00

62 lines
1.4 KiB
C

/* vi: set sw=4 ts=4: */
/*
* Small lzma deflate implementation.
* Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org>
*
* Based on bunzip.c from busybox
*
* Licensed under GPL v2, see file LICENSE in this tarball for details.
*/
#include "busybox.h"
#include "unarchive.h"
#define UNLZMA_OPT_STDOUT 1
int unlzma_main(int argc, char **argv)
{
char *filename;
unsigned long opt;
int status, src_fd, dst_fd;
opt = bb_getopt_ulflags(argc, argv, "c");
/* Set input filename and number */
filename = argv[optind];
if ((filename) && (filename[0] != '-') && (filename[1] != '\0')) {
/* Open input file */
src_fd = xopen(filename, O_RDONLY);
} else {
src_fd = STDIN_FILENO;
filename = 0;
}
/* if called as lzmacat force the stdout flag */
if ((opt & UNLZMA_OPT_STDOUT) || bb_applet_name[4] == 'c')
filename = 0;
if (filename) {
struct stat stat_buf;
char *extension = filename + strlen(filename) - 5;
if (strcmp(extension, ".lzma") != 0) {
bb_error_msg_and_die("Invalid extension");
}
xstat(filename, &stat_buf);
*extension = 0;
dst_fd = xopen3(filename, O_WRONLY | O_CREAT, stat_buf.st_mode);
} else
dst_fd = STDOUT_FILENO;
status = unlzma(src_fd, dst_fd);
if (filename) {
if (!status)
filename[strlen(filename)] = '.';
if (unlink(filename) < 0) {
bb_error_msg_and_die("Couldn't remove %s", filename);
}
}
return status;
}