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Made the preset numbering more logical in liblzma API.
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5 changed files with 18 additions and 17 deletions
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@ -49,7 +49,7 @@ typedef enum {
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/**<
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* LZMA2 filter with fast compression (fast in terms of LZMA2).
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* If you are interested in the exact options used, see
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* lzma_preset_lzma[0]. Note that the exact options may
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* lzma_lzma_preset(1). Note that the exact options may
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* change between liblzma versions.
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*
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* At the moment, the command line tool uses these settings
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@ -57,18 +57,18 @@ typedef enum {
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* may default to some more complex way to determine the
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* settings used e.g. the type of files being compressed.
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*
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* LZMA_EASY_LZMA_2 is equivalent to lzma_preset_lzma[1]
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* LZMA_EASY_LZMA2_2 is equivalent to lzma_lzma_preset(2)
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* and so on.
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*/
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LZMA_EASY_LZMA_2 = 2,
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LZMA_EASY_LZMA_3 = 3,
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LZMA_EASY_LZMA_4 = 4,
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LZMA_EASY_LZMA_5 = 5,
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LZMA_EASY_LZMA_6 = 6,
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LZMA_EASY_LZMA_7 = 7,
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LZMA_EASY_LZMA_8 = 8,
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LZMA_EASY_LZMA_9 = 9,
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LZMA_EASY_LZMA2_2 = 2,
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LZMA_EASY_LZMA2_3 = 3,
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LZMA_EASY_LZMA2_4 = 4,
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LZMA_EASY_LZMA2_5 = 5,
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LZMA_EASY_LZMA2_6 = 6,
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LZMA_EASY_LZMA2_7 = 7,
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LZMA_EASY_LZMA2_8 = 8,
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LZMA_EASY_LZMA2_9 = 9,
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} lzma_easy_level;
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@ -394,7 +394,7 @@ typedef struct {
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/**
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* \brief Set a compression level preset to lzma_options_lzma structure
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*
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* level = 0 is the fastest and level = 8 is the slowest. These presets match
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* level = 1 is the fastest and level = 9 is the slowest. These presets match
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* the switches -1 .. -9 of the command line tool.
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*
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* The preset values are subject to changes between liblzma versions.
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@ -53,9 +53,10 @@ lzma_lzma_preset(lzma_options_lzma *options, uint32_t level)
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extern LZMA_API lzma_bool
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lzma_lzma_preset(lzma_options_lzma *options, uint32_t level)
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{
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if (level >= 9)
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if (level == 0 || level > 9)
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return true;
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--level;
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memzero(options, sizeof(*options));
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static const uint8_t shift[9] = { 16, 20, 19, 20, 21, 22, 23, 24, 25 };
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@ -40,13 +40,13 @@ bool opt_keep_original = false;
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bool opt_preserve_name = false;
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lzma_check opt_check = LZMA_CHECK_CRC64;
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lzma_filter opt_filters[8];
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lzma_filter opt_filters[LZMA_BLOCK_FILTERS_MAX + 1];
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// We don't modify or free() this, but we need to assign it in some
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// non-const pointers.
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const char *stdin_filename = "(stdin)";
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static size_t preset_number = 7 - 1;
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static size_t preset_number = 7;
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static bool preset_default = true;
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static size_t filter_count = 0;
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@ -178,7 +178,7 @@ parse_real(int argc, char **argv)
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case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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preset_number = c - '1';
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preset_number = c - '0';
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preset_default = false;
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break;
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@ -502,7 +502,7 @@ set_compression_settings(void)
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// setting is used.
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if (preset_default) {
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while (memory_usage > opt_memory) {
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if (preset_number == 0) {
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if (preset_number == 1) {
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errmsg(V_ERROR, _("Memory usage limit is too "
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"small for any internal "
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"filter preset"));
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@ -55,7 +55,7 @@ extern enum tool_mode opt_mode;
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extern enum format_type opt_format;
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extern lzma_check opt_check;
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extern lzma_filter opt_filters[8];
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extern lzma_filter opt_filters[LZMA_BLOCK_FILTERS_MAX + 1];
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extern const char *stdin_filename;
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