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| author | Kang-Che Sung | 2017-01-08 14:28:34 +0800 |
|---|---|---|
| committer | Denys Vlasenko | 2017-01-09 09:03:31 +0100 |
| commit | b130f9f758b6404c6d0911a1c120937ae6ab47f8 (patch) | |
| tree | ce1502cfcfc67e7e9fb40b85d13488273aa82689 /archival/gzip.c | |
| parent | fb87d93d1e0a6760049fa88aadd1232b7e1545e7 (diff) | |
| download | busybox-b130f9f758b6404c6d0911a1c120937ae6ab47f8.zip busybox-b130f9f758b6404c6d0911a1c120937ae6ab47f8.tar.gz | |
Allow 'gzip -d' and 'bzip2 -d' without gunzip or bunzip2
Idea copied from the "ip" applet.
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/gzip.c')
| -rw-r--r-- | archival/gzip.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/archival/gzip.c b/archival/gzip.c index 9e0bee8..63bf760 100644 --- a/archival/gzip.c +++ b/archival/gzip.c @@ -72,19 +72,29 @@ aa: 85.1% -- replaced with aa.gz //config: is 6. If levels 1-3 are specified, 4 is used. //config: If this option is not selected, -N options are ignored and -9 //config: is used. +//config: +//config:config FEATURE_GZIP_DECOMPRESS +//config: bool "Enable decompression" +//config: default y +//config: depends on GZIP || GUNZIP || ZCAT +//config: help +//config: Enable -d (--decompress) and -t (--test) options for gzip. +//config: This will be automatically selected if gunzip or zcat is +//config: enabled. //applet:IF_GZIP(APPLET(gzip, BB_DIR_BIN, BB_SUID_DROP)) //kbuild:lib-$(CONFIG_GZIP) += gzip.o //usage:#define gzip_trivial_usage -//usage: "[-cf" IF_GUNZIP("d") IF_FEATURE_GZIP_LEVELS("123456789") "] [FILE]..." +//usage: "[-cf" IF_FEATURE_GZIP_DECOMPRESS("dt") IF_FEATURE_GZIP_LEVELS("123456789") "] [FILE]..." //usage:#define gzip_full_usage "\n\n" //usage: "Compress FILEs (or stdin)\n" //usage: IF_FEATURE_GZIP_LEVELS( //usage: "\n -1..9 Compression level" //usage: ) -//usage: IF_GUNZIP( +//usage: IF_FEATURE_GZIP_DECOMPRESS( //usage: "\n -d Decompress" +//usage: "\n -t Test file integrity" //usage: ) //usage: "\n -c Write to stdout" //usage: "\n -f Force" @@ -2154,7 +2164,7 @@ static const char gzip_longopts[] ALIGN1 = "to-stdout\0" No_argument "c" "force\0" No_argument "f" "verbose\0" No_argument "v" -#if ENABLE_GUNZIP +#if ENABLE_FEATURE_GZIP_DECOMPRESS "decompress\0" No_argument "d" "uncompress\0" No_argument "d" "test\0" No_argument "t" @@ -2181,7 +2191,7 @@ static const char gzip_longopts[] ALIGN1 = */ int gzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; -#if ENABLE_GUNZIP +#if ENABLE_FEATURE_GZIP_DECOMPRESS int gzip_main(int argc, char **argv) #else int gzip_main(int argc UNUSED_PARAM, char **argv) @@ -2211,13 +2221,13 @@ int gzip_main(int argc UNUSED_PARAM, char **argv) applet_long_options = gzip_longopts; #endif /* Must match bbunzip's constants OPT_STDOUT, OPT_FORCE! */ - opt = getopt32(argv, "cfv" IF_GUNZIP("dt") "qn123456789"); -#if ENABLE_GUNZIP /* gunzip_main may not be visible... */ + opt = getopt32(argv, "cfv" IF_FEATURE_GZIP_DECOMPRESS("dt") "qn123456789"); +#if ENABLE_FEATURE_GZIP_DECOMPRESS /* gunzip_main may not be visible... */ if (opt & 0x18) // -d and/or -t return gunzip_main(argc, argv); #endif #ifdef ENABLE_FEATURE_GZIP_LEVELS - opt >>= ENABLE_GUNZIP ? 7 : 5; /* drop cfv[dt]qn bits */ + opt >>= ENABLE_FEATURE_GZIP_DECOMPRESS ? 7 : 5; /* drop cfv[dt]qn bits */ if (opt == 0) opt = 1 << 6; /* default: 6 */ opt = ffs(opt >> 4); /* Maps -1..-4 to [0], -5 to [1] ... -9 to [5] */ |