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gzip: use common bbunzip infrastructure - ~700 bytes code less

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This commit is contained in:
Denis Vlasenko
2007-03-14 00:07:51 +00:00
parent 07766bb0e7
commit 75605788ff
4 changed files with 185 additions and 99 deletions
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2
archival/Kbuild
View File

@@ -14,7 +14,7 @@ lib-$(CONFIG_CPIO) += cpio.o
lib-$(CONFIG_DPKG) += dpkg.o
lib-$(CONFIG_DPKG_DEB) += dpkg_deb.o
lib-$(CONFIG_GUNZIP) += bbunzip.o
lib-$(CONFIG_GZIP) += gzip.o
lib-$(CONFIG_GZIP) += gzip.o bbunzip.o
lib-$(CONFIG_RPM2CPIO) += rpm2cpio.o
lib-$(CONFIG_RPM) += rpm.o
lib-$(CONFIG_TAR) += tar.o

23
archival/bbunzip.c
View File

@@ -9,12 +9,12 @@
#include "unarchive.h"
enum {
OPT_STDOUT = 1,
OPT_FORCE = 2,
OPT_STDOUT = 0x1,
OPT_FORCE = 0x2,
/* gunzip only: */
OPT_TEST = 4,
OPT_DECOMPRESS = 8,
OPT_VERBOSE = 0x10,
OPT_VERBOSE = 0x4,
OPT_DECOMPRESS = 0x8,
OPT_TEST = 0x10,
};
static
@@ -33,8 +33,7 @@ int open_to_or_warn(int to_fd, const char *filename, int flags, int mode)
return 0;
}
static
int unpack(char **argv,
int bbunpack(char **argv,
char* (*make_new_name)(char *filename),
USE_DESKTOP(long long) int (*unpacker)(void)
)
@@ -173,7 +172,7 @@ int bunzip2_main(int argc, char **argv)
if (applet_name[2] == 'c')
option_mask32 |= OPT_STDOUT;
return unpack(argv, make_new_name_bunzip2, unpack_bunzip2);
return bbunpack(argv, make_new_name_bunzip2, unpack_bunzip2);
}
#endif
@@ -267,13 +266,13 @@ USE_DESKTOP(long long) int unpack_gunzip(void)
int gunzip_main(int argc, char **argv);
int gunzip_main(int argc, char **argv)
{
getopt32(argc, argv, "cftdv");
getopt32(argc, argv, "cfvdt");
argv += optind;
/* if called as zcat */
if (applet_name[1] == 'c')
option_mask32 |= OPT_STDOUT;
return unpack(argv, make_new_name_gunzip, unpack_gunzip);
return bbunpack(argv, make_new_name_gunzip, unpack_gunzip);
}
#endif
@@ -311,7 +310,7 @@ int unlzma_main(int argc, char **argv)
if (applet_name[4] == 'c')
option_mask32 |= OPT_STDOUT;
return unpack(argv, make_new_name_unlzma, unpack_unlzma);
return bbunpack(argv, make_new_name_unlzma, unpack_unlzma);
}
#endif
@@ -350,7 +349,7 @@ int uncompress_main(int argc, char **argv)
getopt32(argc, argv, "cf");
argv += optind;
return unpack(argv, make_new_name_uncompress, unpack_uncompress);
return bbunpack(argv, make_new_name_uncompress, unpack_uncompress);
}
#endif

171
archival/gzip.c
View File

@@ -2074,6 +2074,7 @@ static void zip(int in, int out)
/* ======================================================================== */
#if 0
static void abort_gzip(int ATTRIBUTE_UNUSED ignored)
{
exit(1);
@@ -2082,92 +2083,6 @@ static void abort_gzip(int ATTRIBUTE_UNUSED ignored)
int gzip_main(int argc, char **argv);
int gzip_main(int argc, char **argv)
{
enum {
OPT_tostdout = 0x1,
OPT_force = 0x2,
};
unsigned opt;
int inFileNum;
int outFileNum;
int i;
struct stat statBuf;
opt = getopt32(argc, argv, "cf123456789qv" USE_GUNZIP("d"));
//if (opt & 0x1) // -c
//if (opt & 0x2) // -f
/* Ignore 1-9 (compression level) options */
//if (opt & 0x4) // -1
//if (opt & 0x8) // -2
//if (opt & 0x10) // -3
//if (opt & 0x20) // -4
//if (opt & 0x40) // -5
//if (opt & 0x80) // -6
//if (opt & 0x100) // -7
//if (opt & 0x200) // -8
//if (opt & 0x400) // -9
//if (opt & 0x800) // -q
//if (opt & 0x1000) // -v
#if ENABLE_GUNZIP /* gunzip_main may not be visible... */
if (opt & 0x2000) { // -d
/* FIXME: getopt32 should not depend on optind */
optind = 1;
return gunzip_main(argc, argv);
}
#endif
/* Comment?? */
if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
signal(SIGINT, abort_gzip);
}
#ifdef SIGTERM
if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
signal(SIGTERM, abort_gzip);
}
#endif
#ifdef SIGHUP
if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
signal(SIGHUP, abort_gzip);
}
#endif
ptr_to_globals = xzalloc(sizeof(struct global1) + sizeof(struct global2));
ptr_to_globals++;
G2.l_desc.dyn_tree = G2.dyn_ltree;
G2.l_desc.static_tree = G2.static_ltree;
G2.l_desc.extra_bits = extra_lbits;
G2.l_desc.extra_base = LITERALS + 1;
G2.l_desc.elems = L_CODES;
G2.l_desc.max_length = MAX_BITS;
//G2.l_desc.max_code = 0;
G2.d_desc.dyn_tree = G2.dyn_dtree;
G2.d_desc.static_tree = G2.static_dtree;
G2.d_desc.extra_bits = extra_dbits;
//G2.d_desc.extra_base = 0;
G2.d_desc.elems = D_CODES;
G2.d_desc.max_length = MAX_BITS;
//G2.d_desc.max_code = 0;
G2.bl_desc.dyn_tree = G2.bl_tree;
//G2.bl_desc.static_tree = NULL;
G2.bl_desc.extra_bits = extra_blbits,
//G2.bl_desc.extra_base = 0;
G2.bl_desc.elems = BL_CODES;
G2.bl_desc.max_length = MAX_BL_BITS;
//G2.bl_desc.max_code = 0;
/* Allocate all global buffers (for DYN_ALLOC option) */
ALLOC(uch, G1.l_buf, INBUFSIZ);
ALLOC(uch, G1.outbuf, OUTBUFSIZ);
ALLOC(ush, G1.d_buf, DIST_BUFSIZE);
ALLOC(uch, G1.window, 2L * WSIZE);
ALLOC(ush, G1.prev, 1L << BITS);
/* Initialise the CRC32 table */
G1.crc_32_tab = crc32_filltable(0);
clear_bufs();
if (optind == argc) {
G1.time_stamp = 0;
@@ -2240,3 +2155,87 @@ int gzip_main(int argc, char **argv)
return 0; //##G1.exit_code;
}
#endif
int bbunpack(char **argv,
char* (*make_new_name)(char *filename),
USE_DESKTOP(long long) int (*unpacker)(void)
);
static
char* make_new_name_gzip(char *filename)
{
return xasprintf("%s.gz", filename);
}
static
USE_DESKTOP(long long) int pack_gzip(void)
{
struct stat s;
G1.time_stamp = 0;
if (!fstat(STDIN_FILENO, &s))
G1.time_stamp = s.st_ctime;
zip(STDIN_FILENO, STDOUT_FILENO);
return 0;
}
int gzip_main(int argc, char **argv);
int gzip_main(int argc, char **argv)
{
unsigned opt;
/* Must match bbunzip's constants OPT_STDOUT, OPT_FORCE! */
opt = getopt32(argc, argv, "cfv" USE_GUNZIP("d") "q123456789" );
option_mask32 &= 0x7; /* Clear -d, ignore -q, -0..9 */
//if (opt & 0x1) // -c
//if (opt & 0x2) // -f
//if (opt & 0x4) // -v
#if ENABLE_GUNZIP /* gunzip_main may not be visible... */
if (opt & 0x8) { // -d
/* FIXME: getopt32 should not depend on optind */
optind = 1;
return gunzip_main(argc, argv);
}
#endif
ptr_to_globals = xzalloc(sizeof(struct global1) + sizeof(struct global2));
ptr_to_globals++;
G2.l_desc.dyn_tree = G2.dyn_ltree;
G2.l_desc.static_tree = G2.static_ltree;
G2.l_desc.extra_bits = extra_lbits;
G2.l_desc.extra_base = LITERALS + 1;
G2.l_desc.elems = L_CODES;
G2.l_desc.max_length = MAX_BITS;
//G2.l_desc.max_code = 0;
G2.d_desc.dyn_tree = G2.dyn_dtree;
G2.d_desc.static_tree = G2.static_dtree;
G2.d_desc.extra_bits = extra_dbits;
//G2.d_desc.extra_base = 0;
G2.d_desc.elems = D_CODES;
G2.d_desc.max_length = MAX_BITS;
//G2.d_desc.max_code = 0;
G2.bl_desc.dyn_tree = G2.bl_tree;
//G2.bl_desc.static_tree = NULL;
G2.bl_desc.extra_bits = extra_blbits,
//G2.bl_desc.extra_base = 0;
G2.bl_desc.elems = BL_CODES;
G2.bl_desc.max_length = MAX_BL_BITS;
//G2.bl_desc.max_code = 0;
/* Allocate all global buffers (for DYN_ALLOC option) */
ALLOC(uch, G1.l_buf, INBUFSIZ);
ALLOC(uch, G1.outbuf, OUTBUFSIZ);
ALLOC(ush, G1.d_buf, DIST_BUFSIZE);
ALLOC(uch, G1.window, 2L * WSIZE);
ALLOC(ush, G1.prev, 1L << BITS);
/* Initialise the CRC32 table */
G1.crc_32_tab = crc32_filltable(0);
clear_bufs();
return bbunpack(argv, make_new_name_gzip, pack_gzip);
}