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Split message_filters().

Browse source 
message_filters_to_str() converts the filter chain to
a string. message_filters_show() replaces the original
message_filters().

uint32_to_optstr() was also added to show the dictionary
size in nicer format when possible.
This commit is contained in:
Lasse Collin 2010-05-16 18:42:22 +03:00
parent d9986db782
commit b6377fc990
3 changed files with 130 additions and 65 deletions
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2
src/xz/coder.c
View file

@ -168,7 +168,7 @@ coder_set_compression_settings(void)
"with the .xz format"));
// Print the selected filter chain.
message_filters(V_DEBUG, filters);
message_filters_show(V_DEBUG, filters);
// If using --format=raw, we can be decoding. The memusage function
// also validates the filter chain and the options used for the

179
src/xz/message.c
View file

@ -876,16 +876,37 @@ message_mem_needed(enum message_verbosity v, uint64_t memusage)
}
extern void
message_filters(enum message_verbosity v, const lzma_filter *filters)
/// \brief Convert uint32_t to a nice string for --lzma[12]=dict=SIZE
///
/// The idea is to use KiB or MiB suffix when possible.
static const char *
uint32_to_optstr(uint32_t num)
{
if (v > verbosity)
return;
static char buf[16];
fprintf(stderr, _("%s: Filter chain:"), progname);
if ((num & ((UINT32_C(1) << 20) - 1)) == 0)
snprintf(buf, sizeof(buf), "%" PRIu32 "MiB", num >> 20);
else if ((num & ((UINT32_C(1) << 10) - 1)) == 0)
snprintf(buf, sizeof(buf), "%" PRIu32 "KiB", num >> 10);
else
snprintf(buf, sizeof(buf), "%" PRIu32, num);
return buf;
}
extern const char *
message_filters_get(const lzma_filter *filters, bool all_known)
{
static char buf[512];
char *pos = buf;
size_t left = sizeof(buf);
for (size_t i = 0; filters[i].id != LZMA_VLI_UNKNOWN; ++i) {
fprintf(stderr, " --");
// Add the dashes for the filter option. A space is
// needed after the first and later filters.
my_snprintf(&pos, &left, "%s", i == 0 ? "--" : " --");
switch (filters[i].id) {
case LZMA_FILTER_LZMA1:
@ -894,96 +915,128 @@ message_filters(enum message_verbosity v, const lzma_filter *filters)
const char *mode;
const char *mf;
switch (opt->mode) {
case LZMA_MODE_FAST:
mode = "fast";
break;
if (all_known) {
switch (opt->mode) {
case LZMA_MODE_FAST:
mode = "fast";
break;
case LZMA_MODE_NORMAL:
mode = "normal";
break;
case LZMA_MODE_NORMAL:
mode = "normal";
break;
default:
mode = "UNKNOWN";
break;
default:
mode = "UNKNOWN";
break;
}
switch (opt->mf) {
case LZMA_MF_HC3:
mf = "hc3";
break;
case LZMA_MF_HC4:
mf = "hc4";
break;
case LZMA_MF_BT2:
mf = "bt2";
break;
case LZMA_MF_BT3:
mf = "bt3";
break;
case LZMA_MF_BT4:
mf = "bt4";
break;
default:
mf = "UNKNOWN";
break;
}
}
switch (opt->mf) {
case LZMA_MF_HC3:
mf = "hc3";
break;
// Add the filter name and dictionary size, which
// is always known.
my_snprintf(&pos, &left, "lzma%c=dict=%s",
filters[i].id == LZMA_FILTER_LZMA2
? '2' : '1',
uint32_to_optstr(opt->dict_size));
case LZMA_MF_HC4:
mf = "hc4";
break;
// With LZMA1 also lc/lp/pb are known when
// decompressing, but this function is never
// used to print information about .lzma headers.
assert(filters[i].id == LZMA_FILTER_LZMA2
|| all_known);
case LZMA_MF_BT2:
mf = "bt2";
break;
case LZMA_MF_BT3:
mf = "bt3";
break;
case LZMA_MF_BT4:
mf = "bt4";
break;
default:
mf = "UNKNOWN";
break;
}
fprintf(stderr, "lzma%c=dict=%" PRIu32
// Print the rest of the options, which are known
// only when compressing.
if (all_known)
my_snprintf(&pos, &left,
",lc=%" PRIu32 ",lp=%" PRIu32
",pb=%" PRIu32
",mode=%s,nice=%" PRIu32 ",mf=%s"
",depth=%" PRIu32,
filters[i].id == LZMA_FILTER_LZMA2
? '2' : '1',
opt->dict_size,
opt->lc, opt->lp, opt->pb,
mode, opt->nice_len, mf, opt->depth);
break;
}
case LZMA_FILTER_X86:
fprintf(stderr, "x86");
break;
case LZMA_FILTER_POWERPC:
fprintf(stderr, "powerpc");
break;
case LZMA_FILTER_IA64:
fprintf(stderr, "ia64");
break;
case LZMA_FILTER_ARM:
fprintf(stderr, "arm");
break;
case LZMA_FILTER_ARMTHUMB:
fprintf(stderr, "armthumb");
break;
case LZMA_FILTER_SPARC: {
static const char bcj_names[][9] = {
"x86",
"powerpc",
"ia64",
"arm",
"armthumb",
"sparc",
};
const lzma_options_bcj *opt = filters[i].options;
my_snprintf(&pos, &left, "%s", bcj_names[filters[i].id
- LZMA_FILTER_X86]);
// Show the start offset only when really needed.
if (opt != NULL && opt->start_offset != 0)
my_snprintf(&pos, &left, "=start=%" PRIu32,
opt->start_offset);
case LZMA_FILTER_SPARC:
fprintf(stderr, "sparc");
break;
}
case LZMA_FILTER_DELTA: {
const lzma_options_delta *opt = filters[i].options;
fprintf(stderr, "delta=dist=%" PRIu32, opt->dist);
my_snprintf(&pos, &left, "delta=dist=%" PRIu32,
opt->dist);
break;
}
default:
fprintf(stderr, "UNKNOWN");
// This should be possible only if liblzma is
// newer than the xz tool.
my_snprintf(&pos, &left, "UNKNOWN");
break;
}
}
fputc('\n', stderr);
return buf;
}
extern void
message_filters_show(enum message_verbosity v, const lzma_filter *filters)
{
if (v > verbosity)
return;
fprintf(stderr, _("%s: Filter chain: %s\n"), progname,
message_filters_get(filters, true));
return;
}

14
src/xz/message.h
View file

@ -86,8 +86,20 @@ extern const char *message_strm(lzma_ret code);
extern void message_mem_needed(enum message_verbosity v, uint64_t memusage);
/// \brief Get the filter chain as a string
///
/// \param filters Pointer to the filter chain
/// \param all_known If true, all filter options are printed.
/// If false, only the options that get stored
/// into .xz headers are printed.
///
/// \return Pointer to a statically allocated buffer.
extern const char *message_filters_get(
const lzma_filter *filters, bool all_known);
/// Print the filter chain.
extern void message_filters(
extern void message_filters_show(
enum message_verbosity v, const lzma_filter *filters);