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Add support for specifying the BCJ filter start offset

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in the xz command line tool.
This commit is contained in:
Lasse Collin 2009-05-23 15:12:23 +03:00
parent 72aa0e9c5f
commit b1edee2cdc
4 changed files with 76 additions and 21 deletions
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36
src/xz/args.c
View file

@ -80,15 +80,15 @@ parse_real(args_info *args, int argc, char **argv)
// Filters // Filters
{ "lzma1", optional_argument, NULL, OPT_LZMA1 }, { "lzma1", optional_argument, NULL, OPT_LZMA1 },
{ "lzma2", optional_argument, NULL, OPT_LZMA2 }, { "lzma2", optional_argument, NULL, OPT_LZMA2 },
{ "x86", no_argument, NULL, OPT_X86 }, { "x86", optional_argument, NULL, OPT_X86 },
{ "bcj", no_argument, NULL, OPT_X86 }, { "bcj", optional_argument, NULL, OPT_X86 },
{ "powerpc", no_argument, NULL, OPT_POWERPC }, { "powerpc", optional_argument, NULL, OPT_POWERPC },
{ "ppc", no_argument, NULL, OPT_POWERPC }, { "ppc", optional_argument, NULL, OPT_POWERPC },
{ "ia64", no_argument, NULL, OPT_IA64 }, { "ia64", optional_argument, NULL, OPT_IA64 },
{ "itanium", no_argument, NULL, OPT_IA64 }, { "itanium", optional_argument, NULL, OPT_IA64 },
{ "arm", no_argument, NULL, OPT_ARM }, { "arm", optional_argument, NULL, OPT_ARM },
{ "armthumb", no_argument, NULL, OPT_ARMTHUMB }, { "armthumb", optional_argument, NULL, OPT_ARMTHUMB },
{ "sparc", no_argument, NULL, OPT_SPARC }, { "sparc", optional_argument, NULL, OPT_SPARC },
{ "delta", optional_argument, NULL, OPT_DELTA }, { "delta", optional_argument, NULL, OPT_DELTA },
{ "subblock", optional_argument, NULL, OPT_SUBBLOCK }, { "subblock", optional_argument, NULL, OPT_SUBBLOCK },
@ -222,27 +222,33 @@ parse_real(args_info *args, int argc, char **argv)
break; break;
case OPT_X86: case OPT_X86:
coder_add_filter(LZMA_FILTER_X86, NULL); coder_add_filter(LZMA_FILTER_X86,
options_bcj(optarg));
break; break;
case OPT_POWERPC: case OPT_POWERPC:
coder_add_filter(LZMA_FILTER_POWERPC, NULL); coder_add_filter(LZMA_FILTER_POWERPC,
options_bcj(optarg));
break; break;
case OPT_IA64: case OPT_IA64:
coder_add_filter(LZMA_FILTER_IA64, NULL); coder_add_filter(LZMA_FILTER_IA64,
options_bcj(optarg));
break; break;
case OPT_ARM: case OPT_ARM:
coder_add_filter(LZMA_FILTER_ARM, NULL); coder_add_filter(LZMA_FILTER_ARM,
options_bcj(optarg));
break; break;
case OPT_ARMTHUMB: case OPT_ARMTHUMB:
coder_add_filter(LZMA_FILTER_ARMTHUMB, NULL); coder_add_filter(LZMA_FILTER_ARMTHUMB,
options_bcj(optarg));
break; break;
case OPT_SPARC: case OPT_SPARC:
coder_add_filter(LZMA_FILTER_SPARC, NULL); coder_add_filter(LZMA_FILTER_SPARC,
options_bcj(optarg));
break; break;
case OPT_DELTA: case OPT_DELTA:

14
src/xz/message.c
View file

@ -1101,12 +1101,14 @@ message_help(bool long_help)
puts(_( puts(_(
"\n" "\n"
" --x86 x86 filter (sometimes called BCJ filter)\n" " --x86[=OPTS] x86 BCJ filter\n"
" --powerpc PowerPC (big endian) filter\n" " --powerpc[=OPTS] PowerPC BCJ filter (big endian only)\n"
" --ia64 IA64 (Itanium) filter\n" " --ia64[=OPTS] IA64 (Itanium) BCJ filter\n"
" --arm ARM filter\n" " --arm[=OPTS] ARM BCJ filter (little endian only)\n"
" --armthumb ARM-Thumb filter\n" " --armthumb[=OPTS] ARM-Thumb BCJ filter (little endian only)\n"
" --sparc SPARC filter")); " --sparc[=OPTS] SPARC BCJ filter\n"
" Valid OPTS for all BCJ filters:\n"
" start=NUM start offset for conversions (default=0)"));
#if defined(HAVE_ENCODER_DELTA) || defined(HAVE_DECODER_DELTA) #if defined(HAVE_ENCODER_DELTA) || defined(HAVE_DECODER_DELTA)
puts(_( puts(_(

40
src/xz/options.c
View file

@ -225,6 +225,46 @@ options_delta(const char *str)
} }
/////////
// BCJ //
/////////
enum {
OPT_START_OFFSET,
};
static void
set_bcj(void *options, uint32_t key, uint64_t value)
{
lzma_options_bcj *opt = options;
switch (key) {
case OPT_START_OFFSET:
opt->start_offset = value;
break;
}
}
extern lzma_options_bcj *
options_bcj(const char *str)
{
static const option_map opts[] = {
{ "start", NULL, 0, UINT32_MAX },
{ NULL, NULL, 0, 0 }
};
lzma_options_bcj *options = xmalloc(sizeof(lzma_options_bcj));
*options = (lzma_options_bcj){
.start_offset = 0,
};
parse_options(str, opts, &set_bcj, options);
return options;
}
////////// //////////
// LZMA // // LZMA //
////////// //////////

7
src/xz/options.h
View file

@ -24,6 +24,13 @@ extern lzma_options_subblock *options_subblock(const char *str);
extern lzma_options_delta *options_delta(const char *str); extern lzma_options_delta *options_delta(const char *str);
/// \brief Parser for BCJ options
///
/// \return Pointer to allocated options structure.
/// Doesn't return on error.
extern lzma_options_bcj *options_bcj(const char *str);
/// \brief Parser for LZMA options /// \brief Parser for LZMA options
/// ///
/// \return Pointer to allocated options structure. /// \return Pointer to allocated options structure.