/* vi: set sw=4 ts=4: */
/*
- * Common code for gunzip-like applets
+ * Common code for gunzip-like applets
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-
#include "libbb.h"
-#include "unarchive.h"
+#include "bb_archive.h"
+
+/* lzop_main() uses bbunpack(), need this: */
+//kbuild:lib-$(CONFIG_LZOP) += bbunzip.o
+/* Note: must be kept in sync with archival/lzop.c */
enum {
- OPT_STDOUT = 0x1,
- OPT_FORCE = 0x2,
-/* gunzip only: */
- OPT_VERBOSE = 0x4,
- OPT_DECOMPRESS = 0x8,
- OPT_TEST = 0x10,
+ OPT_STDOUT = 1 << 0,
+ OPT_FORCE = 1 << 1,
+ /* only some decompressors: */
+ OPT_VERBOSE = 1 << 2,
+ OPT_QUIET = 1 << 3,
+ OPT_DECOMPRESS = 1 << 4,
+ OPT_TEST = 1 << 5,
+ SEAMLESS_MAGIC = (1 << 31) * SEAMLESS_COMPRESSION,
};
static
return 0;
}
-int bbunpack(char **argv,
- char* (*make_new_name)(char *filename),
- USE_DESKTOP(long long) int (*unpacker)(void)
+char* FAST_FUNC append_ext(char *filename, const char *expected_ext)
+{
+ return xasprintf("%s.%s", filename, expected_ext);
+}
+
+int FAST_FUNC bbunpack(char **argv,
+ IF_DESKTOP(long long) int FAST_FUNC (*unpacker)(transformer_aux_data_t *aux),
+ char* FAST_FUNC (*make_new_name)(char *filename, const char *expected_ext),
+ const char *expected_ext
)
{
struct stat stat_buf;
- USE_DESKTOP(long long) int status;
+ IF_DESKTOP(long long) int status = 0;
char *filename, *new_name;
smallint exitcode = 0;
+ transformer_aux_data_t aux;
do {
/* NB: new_name is *maybe* malloc'ed! */
/* Open src */
if (filename) {
- if (stat(filename, &stat_buf) != 0) {
- bb_simple_perror_msg(filename);
+ if (!(option_mask32 & SEAMLESS_MAGIC)) {
+ if (stat(filename, &stat_buf) != 0) {
+ err_name:
+ bb_simple_perror_msg(filename);
err:
- exitcode = 1;
- goto free_name;
+ exitcode = 1;
+ goto free_name;
+ }
+ if (open_to_or_warn(STDIN_FILENO, filename, O_RDONLY, 0))
+ goto err;
+ } else {
+ /* "clever zcat" with FILE */
+ int fd = open_zipped(filename);
+ if (fd < 0)
+ goto err_name;
+ xmove_fd(fd, STDIN_FILENO);
}
- if (open_to_or_warn(STDIN_FILENO, filename, O_RDONLY, 0))
+ } else
+ if (option_mask32 & SEAMLESS_MAGIC) {
+ /* "clever zcat" on stdin */
+ if (setup_unzip_on_fd(STDIN_FILENO, /*fail_if_not_detected*/ 0))
goto err;
}
if (option_mask32 & (OPT_STDOUT|OPT_TEST)) {
if (option_mask32 & OPT_TEST)
if (open_to_or_warn(STDOUT_FILENO, bb_dev_null, O_WRONLY, 0))
- goto err;
+ xfunc_die();
filename = NULL;
}
/* Open dst if we are going to unpack to file */
if (filename) {
- new_name = make_new_name(filename);
+ new_name = make_new_name(filename, expected_ext);
if (!new_name) {
bb_error_msg("%s: unknown suffix - ignored", filename);
goto err;
}
+
+ /* -f: overwrite existing output files */
+ if (option_mask32 & OPT_FORCE) {
+ unlink(new_name);
+ }
+
/* O_EXCL: "real" bunzip2 doesn't overwrite files */
/* GNU gunzip does not bail out, but goes to next file */
if (open_to_or_warn(STDOUT_FILENO, new_name, O_WRONLY | O_CREAT | O_EXCL,
}
/* Check that the input is sane */
- if (isatty(STDIN_FILENO) && (option_mask32 & OPT_FORCE) == 0) {
+ if (!(option_mask32 & OPT_FORCE) && isatty(STDIN_FILENO)) {
bb_error_msg_and_die("compressed data not read from terminal, "
"use -f to force it");
}
- status = unpacker();
- if (status < 0)
- exitcode = 1;
+ if (!(option_mask32 & SEAMLESS_MAGIC)) {
+ init_transformer_aux_data(&aux);
+ aux.check_signature = 1;
+ status = unpacker(&aux);
+ if (status < 0)
+ exitcode = 1;
+ } else {
+ if (bb_copyfd_eof(STDIN_FILENO, STDOUT_FILENO) < 0)
+ /* Disk full, tty closed, etc. No point in continuing */
+ xfunc_die();
+ }
+
+ if (!(option_mask32 & OPT_STDOUT))
+ xclose(STDOUT_FILENO); /* with error check! */
if (filename) {
char *del = new_name;
+
if (status >= 0) {
- /* TODO: restore user/group/times here? */
- /* Delete _compressed_ file */
+ unsigned new_name_len;
+
+ /* TODO: restore other things? */
+ if (aux.mtime != 0) {
+ struct timeval times[2];
+
+ times[1].tv_sec = times[0].tv_sec = aux.mtime;
+ times[1].tv_usec = times[0].tv_usec = 0;
+ /* Note: we closed it first.
+ * On some systems calling utimes
+ * then closing resets the mtime
+ * back to current time. */
+ utimes(new_name, times); /* ignoring errors */
+ }
+
+ if (ENABLE_DESKTOP)
+ new_name_len = strlen(new_name);
+ /* Restore source filename (unless tgz -> tar case) */
+ if (new_name == filename) {
+ new_name_len = strlen(filename);
+ filename[new_name_len] = '.';
+ }
+ /* Extreme bloat for gunzip compat */
+ /* Some users do want this info... */
+ if (ENABLE_DESKTOP && (option_mask32 & OPT_VERBOSE)) {
+ unsigned percent = status
+ ? ((uoff_t)stat_buf.st_size * 100u / (unsigned long long)status)
+ : 0;
+ fprintf(stderr, "%s: %u%% - replaced with %.*s\n",
+ filename,
+ 100u - percent,
+ new_name_len, new_name
+ );
+ }
+ /* Delete _source_ file */
del = filename;
- /* restore extension (unless tgz -> tar case) */
- if (new_name == filename)
- filename[strlen(filename)] = '.';
}
xunlink(del);
-
-#if 0 /* Currently buggy - wrong name: "a.gz: 261% - replaced with a.gz" */
- /* Extreme bloat for gunzip compat */
- if (ENABLE_DESKTOP && (option_mask32 & OPT_VERBOSE) && status >= 0) {
- fprintf(stderr, "%s: %u%% - replaced with %s\n",
- filename, (unsigned)(stat_buf.st_size*100 / (status+1)), new_name);
- }
-#endif
-
free_name:
if (new_name != filename)
free(new_name);
}
} while (*argv && *++argv);
+ if (option_mask32 & OPT_STDOUT)
+ xclose(STDOUT_FILENO); /* with error check! */
+
return exitcode;
}
-#if ENABLE_BUNZIP2 || ENABLE_UNLZMA || ENABLE_UNCOMPRESS
-
+#if ENABLE_UNCOMPRESS || ENABLE_BUNZIP2 || ENABLE_UNLZMA || ENABLE_UNXZ
static
-char* make_new_name_generic(char *filename, const char *expected_ext)
+char* FAST_FUNC make_new_name_generic(char *filename, const char *expected_ext)
{
char *extension = strrchr(filename, '.');
if (!extension || strcmp(extension + 1, expected_ext) != 0) {
*extension = '\0';
return filename;
}
-
#endif
/*
- * Modified for busybox by Glenn McGrath
- * Added support output to stdout by Thomas Lundquist <thomasez@zelow.no>
+ * Uncompress applet for busybox (c) 2002 Glenn McGrath
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-
-#if ENABLE_BUNZIP2
-
-static
-char* make_new_name_bunzip2(char *filename)
-{
- return make_new_name_generic(filename, "bz2");
-}
-
+//usage:#define uncompress_trivial_usage
+//usage: "[-cf] [FILE]..."
+//usage:#define uncompress_full_usage "\n\n"
+//usage: "Decompress .Z file[s]\n"
+//usage: "\n -c Write to stdout"
+//usage: "\n -f Overwrite"
+
+//config:config UNCOMPRESS
+//config: bool "uncompress"
+//config: default n
+//config: help
+//config: uncompress is used to decompress archives created by compress.
+//config: Not much used anymore, replaced by gzip/gunzip.
+
+//applet:IF_UNCOMPRESS(APPLET(uncompress, BB_DIR_BIN, BB_SUID_DROP))
+//kbuild:lib-$(CONFIG_UNCOMPRESS) += bbunzip.o
+#if ENABLE_UNCOMPRESS
static
-USE_DESKTOP(long long) int unpack_bunzip2(void)
+IF_DESKTOP(long long) int FAST_FUNC unpack_uncompress(transformer_aux_data_t *aux)
{
- return unpack_bz2_stream(STDIN_FILENO, STDOUT_FILENO);
+ return unpack_Z_stream(aux, STDIN_FILENO, STDOUT_FILENO);
}
-
-int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int bunzip2_main(int argc, char **argv)
+int uncompress_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int uncompress_main(int argc UNUSED_PARAM, char **argv)
{
getopt32(argv, "cf");
argv += optind;
- if (applet_name[2] == 'c')
- option_mask32 |= OPT_STDOUT;
- return bbunpack(argv, make_new_name_bunzip2, unpack_bunzip2);
+ return bbunpack(argv, unpack_uncompress, make_new_name_generic, "Z");
}
-
#endif
* General cleanup to better adhere to the style guide and make use of standard
* busybox functions by Glenn McGrath
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*
* gzip (GNU zip) -- compress files with zip algorithm and 'compress' interface
* Copyright (C) 1992-1993 Jean-loup Gailly
* Portions of the lzw code are derived from the public domain 'compress'
* written by Spencer Thomas, Joe Orost, James Woods, Jim McKie, Steve Davies,
* Ken Turkowski, Dave Mack and Peter Jannesen.
- *
- * See the license_msg below and the file COPYING for the software license.
- * See the file algorithm.doc for the compression algorithms and file formats.
*/
-
+//usage:#define gunzip_trivial_usage
+//usage: "[-cft] [FILE]..."
+//usage:#define gunzip_full_usage "\n\n"
+//usage: "Decompress FILEs (or stdin)\n"
+//usage: "\n -c Write to stdout"
+//usage: "\n -f Force"
+//usage: "\n -t Test file integrity"
+//usage:
+//usage:#define gunzip_example_usage
+//usage: "$ ls -la /tmp/BusyBox*\n"
+//usage: "-rw-rw-r-- 1 andersen andersen 557009 Apr 11 10:55 /tmp/BusyBox-0.43.tar.gz\n"
+//usage: "$ gunzip /tmp/BusyBox-0.43.tar.gz\n"
+//usage: "$ ls -la /tmp/BusyBox*\n"
+//usage: "-rw-rw-r-- 1 andersen andersen 1761280 Apr 14 17:47 /tmp/BusyBox-0.43.tar\n"
+//usage:
+//usage:#define zcat_trivial_usage
+//usage: "[FILE]..."
+//usage:#define zcat_full_usage "\n\n"
+//usage: "Decompress to stdout"
+
+//config:config GUNZIP
+//config: bool "gunzip"
+//config: default y
+//config: help
+//config: gunzip is used to decompress archives created by gzip.
+//config: You can use the `-t' option to test the integrity of
+//config: an archive, without decompressing it.
+
+//applet:IF_GUNZIP(APPLET(gunzip, BB_DIR_BIN, BB_SUID_DROP))
+//applet:IF_GUNZIP(APPLET_ODDNAME(zcat, gunzip, BB_DIR_BIN, BB_SUID_DROP, zcat))
+//kbuild:lib-$(CONFIG_GZIP) += bbunzip.o
+//kbuild:lib-$(CONFIG_GUNZIP) += bbunzip.o
#if ENABLE_GUNZIP
-
static
-char* make_new_name_gunzip(char *filename)
+char* FAST_FUNC make_new_name_gunzip(char *filename, const char *expected_ext UNUSED_PARAM)
{
char *extension = strrchr(filename, '.');
extension++;
if (strcmp(extension, "tgz" + 1) == 0
-#if ENABLE_FEATURE_GUNZIP_UNCOMPRESS
- || strcmp(extension, "Z") == 0
+#if ENABLE_FEATURE_SEAMLESS_Z
+ || (extension[0] == 'Z' && extension[1] == '\0')
#endif
) {
extension[-1] = '\0';
}
return filename;
}
-
static
-USE_DESKTOP(long long) int unpack_gunzip(void)
+IF_DESKTOP(long long) int FAST_FUNC unpack_gunzip(transformer_aux_data_t *aux)
+{
+ return unpack_gz_stream(aux, STDIN_FILENO, STDOUT_FILENO);
+}
+/*
+ * Linux kernel build uses gzip -d -n. We accept and ignore it.
+ * Man page says:
+ * -n --no-name
+ * gzip: do not save the original file name and time stamp.
+ * (The original name is always saved if the name had to be truncated.)
+ * gunzip: do not restore the original file name/time even if present
+ * (remove only the gzip suffix from the compressed file name).
+ * This option is the default when decompressing.
+ * -N --name
+ * gzip: always save the original file name and time stamp (this is the default)
+ * gunzip: restore the original file name and time stamp if present.
+ */
+int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int gunzip_main(int argc UNUSED_PARAM, char **argv)
{
- USE_DESKTOP(long long) int status = -1;
+ getopt32(argv, "cfvqdtn");
+ argv += optind;
- /* do the decompression, and cleanup */
- if (xread_char(STDIN_FILENO) == 0x1f) {
- unsigned char magic2;
+ /* If called as zcat...
+ * Normally, "zcat" is just "gunzip -c".
+ * But if seamless magic is enabled, then we are much more clever.
+ */
+ if (applet_name[1] == 'c')
+ option_mask32 |= OPT_STDOUT | SEAMLESS_MAGIC;
- magic2 = xread_char(STDIN_FILENO);
- if (ENABLE_FEATURE_GUNZIP_UNCOMPRESS && magic2 == 0x9d) {
- status = uncompress(STDIN_FILENO, STDOUT_FILENO);
- } else if (magic2 == 0x8b) {
- status = unpack_gz_stream(STDIN_FILENO, STDOUT_FILENO);
- } else {
- goto bad_magic;
- }
- if (status < 0) {
- bb_error_msg("error inflating");
- }
- } else {
- bad_magic:
- bb_error_msg("invalid magic");
- /* status is still == -1 */
- }
- return status;
+ return bbunpack(argv, unpack_gunzip, make_new_name_gunzip, /*unused:*/ NULL);
}
+#endif
-int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int gunzip_main(int argc, char **argv)
+
+/*
+ * Modified for busybox by Glenn McGrath
+ * Added support output to stdout by Thomas Lundquist <thomasez@zelow.no>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+//usage:#define bunzip2_trivial_usage
+//usage: "[-cf] [FILE]..."
+//usage:#define bunzip2_full_usage "\n\n"
+//usage: "Decompress FILEs (or stdin)\n"
+//usage: "\n -c Write to stdout"
+//usage: "\n -f Force"
+//usage:#define bzcat_trivial_usage
+//usage: "[FILE]..."
+//usage:#define bzcat_full_usage "\n\n"
+//usage: "Decompress to stdout"
+
+//config:config BUNZIP2
+//config: bool "bunzip2"
+//config: default y
+//config: help
+//config: bunzip2 is a compression utility using the Burrows-Wheeler block
+//config: sorting text compression algorithm, and Huffman coding. Compression
+//config: is generally considerably better than that achieved by more
+//config: conventional LZ77/LZ78-based compressors, and approaches the
+//config: performance of the PPM family of statistical compressors.
+//config:
+//config: Unless you have a specific application which requires bunzip2, you
+//config: should probably say N here.
+
+//applet:IF_BUNZIP2(APPLET(bunzip2, BB_DIR_USR_BIN, BB_SUID_DROP))
+//applet:IF_BUNZIP2(APPLET_ODDNAME(bzcat, bunzip2, BB_DIR_USR_BIN, BB_SUID_DROP, bzcat))
+//kbuild:lib-$(CONFIG_BZIP2) += bbunzip.o
+//kbuild:lib-$(CONFIG_BUNZIP2) += bbunzip.o
+#if ENABLE_BUNZIP2
+static
+IF_DESKTOP(long long) int FAST_FUNC unpack_bunzip2(transformer_aux_data_t *aux)
{
- getopt32(argv, "cfvdt");
+ return unpack_bz2_stream(aux, STDIN_FILENO, STDOUT_FILENO);
+}
+int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int bunzip2_main(int argc UNUSED_PARAM, char **argv)
+{
+ getopt32(argv, "cfvqdt");
argv += optind;
- /* if called as zcat */
- if (applet_name[1] == 'c')
+ if (applet_name[2] == 'c') /* bzcat */
option_mask32 |= OPT_STDOUT;
- return bbunpack(argv, make_new_name_gunzip, unpack_gunzip);
+ return bbunpack(argv, unpack_bunzip2, make_new_name_generic, "bz2");
}
-
#endif
*
* Based on bunzip.c from busybox
*
- * Licensed under GPL v2, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
-
+//usage:#define unlzma_trivial_usage
+//usage: "[-cf] [FILE]..."
+//usage:#define unlzma_full_usage "\n\n"
+//usage: "Decompress FILE (or stdin)\n"
+//usage: "\n -c Write to stdout"
+//usage: "\n -f Force"
+//usage:
+//usage:#define lzma_trivial_usage
+//usage: "-d [-cf] [FILE]..."
+//usage:#define lzma_full_usage "\n\n"
+//usage: "Decompress FILE (or stdin)\n"
+//usage: "\n -d Decompress"
+//usage: "\n -c Write to stdout"
+//usage: "\n -f Force"
+//usage:
+//usage:#define lzcat_trivial_usage
+//usage: "[FILE]..."
+//usage:#define lzcat_full_usage "\n\n"
+//usage: "Decompress to stdout"
+//usage:
+//usage:#define unxz_trivial_usage
+//usage: "[-cf] [FILE]..."
+//usage:#define unxz_full_usage "\n\n"
+//usage: "Decompress FILE (or stdin)\n"
+//usage: "\n -c Write to stdout"
+//usage: "\n -f Force"
+//usage:
+//usage:#define xz_trivial_usage
+//usage: "-d [-cf] [FILE]..."
+//usage:#define xz_full_usage "\n\n"
+//usage: "Decompress FILE (or stdin)\n"
+//usage: "\n -d Decompress"
+//usage: "\n -c Write to stdout"
+//usage: "\n -f Force"
+//usage:
+//usage:#define xzcat_trivial_usage
+//usage: "[FILE]..."
+//usage:#define xzcat_full_usage "\n\n"
+//usage: "Decompress to stdout"
+
+//config:config UNLZMA
+//config: bool "unlzma"
+//config: default y
+//config: help
+//config: unlzma is a compression utility using the Lempel-Ziv-Markov chain
+//config: compression algorithm, and range coding. Compression
+//config: is generally considerably better than that achieved by the bzip2
+//config: compressors.
+//config:
+//config: The BusyBox unlzma applet is limited to decompression only.
+//config: On an x86 system, this applet adds about 4K.
+//config:
+//config:config FEATURE_LZMA_FAST
+//config: bool "Optimize unlzma for speed"
+//config: default n
+//config: depends on UNLZMA
+//config: help
+//config: This option reduces decompression time by about 25% at the cost of
+//config: a 1K bigger binary.
+//config:
+//config:config LZMA
+//config: bool "Provide lzma alias which supports only unpacking"
+//config: default y
+//config: depends on UNLZMA
+//config: help
+//config: Enable this option if you want commands like "lzma -d" to work.
+//config: IOW: you'll get lzma applet, but it will always require -d option.
+
+//applet:IF_UNLZMA(APPLET(unlzma, BB_DIR_USR_BIN, BB_SUID_DROP))
+//applet:IF_UNLZMA(APPLET_ODDNAME(lzcat, unlzma, BB_DIR_USR_BIN, BB_SUID_DROP, lzcat))
+//applet:IF_LZMA(APPLET_ODDNAME(lzma, unlzma, BB_DIR_USR_BIN, BB_SUID_DROP, lzma))
+//kbuild:lib-$(CONFIG_UNLZMA) += bbunzip.o
#if ENABLE_UNLZMA
-
-static
-char* make_new_name_unlzma(char *filename)
-{
- return make_new_name_generic(filename, "lzma");
-}
-
static
-USE_DESKTOP(long long) int unpack_unlzma(void)
+IF_DESKTOP(long long) int FAST_FUNC unpack_unlzma(transformer_aux_data_t *aux)
{
- return unpack_lzma_stream(STDIN_FILENO, STDOUT_FILENO);
+ return unpack_lzma_stream(aux, STDIN_FILENO, STDOUT_FILENO);
}
-
int unlzma_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int unlzma_main(int argc, char **argv)
+int unlzma_main(int argc UNUSED_PARAM, char **argv)
{
- getopt32(argv, "cf");
- argv += optind;
- /* lzmacat? */
- if (applet_name[4] == 'c')
+ IF_LZMA(int opts =) getopt32(argv, "cfvqdt");
+# if ENABLE_LZMA
+ /* lzma without -d or -t? */
+ if (applet_name[2] == 'm' && !(opts & (OPT_DECOMPRESS|OPT_TEST)))
+ bb_show_usage();
+# endif
+ /* lzcat? */
+ if (applet_name[2] == 'c')
option_mask32 |= OPT_STDOUT;
- return bbunpack(argv, make_new_name_unlzma, unpack_unlzma);
+ argv += optind;
+ return bbunpack(argv, unpack_unlzma, make_new_name_generic, "lzma");
}
-
#endif
-/*
- * Uncompress applet for busybox (c) 2002 Glenn McGrath
- *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
- */
-
-#if ENABLE_UNCOMPRESS
-
+//config:config UNXZ
+//config: bool "unxz"
+//config: default y
+//config: help
+//config: unxz is a unlzma successor.
+//config:
+//config:config XZ
+//config: bool "Provide xz alias which supports only unpacking"
+//config: default y
+//config: depends on UNXZ
+//config: help
+//config: Enable this option if you want commands like "xz -d" to work.
+//config: IOW: you'll get xz applet, but it will always require -d option.
+
+//applet:IF_UNXZ(APPLET(unxz, BB_DIR_USR_BIN, BB_SUID_DROP))
+//applet:IF_UNXZ(APPLET_ODDNAME(xzcat, unxz, BB_DIR_USR_BIN, BB_SUID_DROP, xzcat))
+//applet:IF_XZ(APPLET_ODDNAME(xz, unxz, BB_DIR_USR_BIN, BB_SUID_DROP, xz))
+//kbuild:lib-$(CONFIG_UNXZ) += bbunzip.o
+#if ENABLE_UNXZ
static
-char* make_new_name_uncompress(char *filename)
+IF_DESKTOP(long long) int FAST_FUNC unpack_unxz(transformer_aux_data_t *aux)
{
- return make_new_name_generic(filename, "Z");
+ return unpack_xz_stream(aux, STDIN_FILENO, STDOUT_FILENO);
}
-
-static
-USE_DESKTOP(long long) int unpack_uncompress(void)
+int unxz_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int unxz_main(int argc UNUSED_PARAM, char **argv)
{
- USE_DESKTOP(long long) int status = -1;
-
- if ((xread_char(STDIN_FILENO) != 0x1f) || (xread_char(STDIN_FILENO) != 0x9d)) {
- bb_error_msg("invalid magic");
- } else {
- status = uncompress(STDIN_FILENO, STDOUT_FILENO);
- }
- return status;
-}
+ IF_XZ(int opts =) getopt32(argv, "cfvqdt");
+# if ENABLE_XZ
+ /* xz without -d or -t? */
+ if (applet_name[2] == '\0' && !(opts & (OPT_DECOMPRESS|OPT_TEST)))
+ bb_show_usage();
+# endif
+ /* xzcat? */
+ if (applet_name[2] == 'c')
+ option_mask32 |= OPT_STDOUT;
-int uncompress_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int uncompress_main(int argc, char **argv)
-{
- getopt32(argv, "cf");
argv += optind;
-
- return bbunpack(argv, make_new_name_uncompress, unpack_uncompress);
+ return bbunpack(argv, unpack_unxz, make_new_name_generic, "xz");
}
-
#endif
projects / platform / upstream / busybox.git / blobdiff