options.h File Reference

Parser for filter-specific options. More...

Go to the source code of this file.

Functions
lzma_options_delta *	options_delta (const char *str)
	Parser for Delta options. More...
lzma_options_bcj *	options_bcj (const char *str)
	Parser for BCJ options. More...
lzma_options_lzma *	options_lzma (const char *str)
	Parser for LZMA options. More...

Detailed Description

Parser for filter-specific options.

Definition in file options.h.

Function Documentation

options_bcj()

lzma_options_bcj* options_bcj

(

const char *

str

)

Parser for BCJ options.

Returns

Pointer to allocated options structure. Doesn't return on error.

Definition at line 209 of file options.c.

{
    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;
}

References NULL, options, parse_options(), set_bcj(), cmd_descs_generate::str, UINT32_MAX, and xmalloc.

Referenced by parse_real().

options_delta()

lzma_options_delta* options_delta

(

const char *

str

)

Parser for Delta options.

Returns

Pointer to allocated options structure. Doesn't return on error.

Definition at line 165 of file options.c.

{
    static const option_map opts[] = {
        { "dist",     NULL,  LZMA_DELTA_DIST_MIN,
                             LZMA_DELTA_DIST_MAX },
        { NULL,       NULL,  0, 0 }
    };
 
    lzma_options_delta *options = xmalloc(sizeof(lzma_options_delta));
    *options = (lzma_options_delta){
        // It's hard to give a useful default for this.
        .type = LZMA_DELTA_TYPE_BYTE,
        .dist = LZMA_DELTA_DIST_MIN,
    };
 
    parse_options(str, opts, &set_delta, options);
 
    return options;
}

References LZMA_DELTA_DIST_MAX, LZMA_DELTA_DIST_MIN, LZMA_DELTA_TYPE_BYTE, NULL, options, parse_options(), set_delta(), cmd_descs_generate::str, and xmalloc.

Referenced by parse_real().

options_lzma()

lzma_options_lzma* options_lzma

(

const char *

str

)

Parser for LZMA options.

Returns

Pointer to allocated options structure. Doesn't return on error.

Definition at line 317 of file options.c.

{
    static const name_id_map modes[] = {
        { "fast",   LZMA_MODE_FAST },
        { "normal", LZMA_MODE_NORMAL },
        { NULL,     0 }
    };
 
    static const name_id_map mfs[] = {
        { "hc3", LZMA_MF_HC3 },
        { "hc4", LZMA_MF_HC4 },
        { "bt2", LZMA_MF_BT2 },
        { "bt3", LZMA_MF_BT3 },
        { "bt4", LZMA_MF_BT4 },
        { NULL,  0 }
    };
 
    static const option_map opts[] = {
        { "preset", NULL,   UINT64_MAX, 0 },
        { "dict",   NULL,   LZMA_DICT_SIZE_MIN,
                (UINT32_C(1) << 30) + (UINT32_C(1) << 29) },
        { "lc",     NULL,   LZMA_LCLP_MIN, LZMA_LCLP_MAX },
        { "lp",     NULL,   LZMA_LCLP_MIN, LZMA_LCLP_MAX },
        { "pb",     NULL,   LZMA_PB_MIN, LZMA_PB_MAX },
        { "mode",   modes,  0, 0 },
        { "nice",   NULL,   2, 273 },
        { "mf",     mfs,    0, 0 },
        { "depth",  NULL,   0, UINT32_MAX },
        { NULL,     NULL,   0, 0 }
    };
 
    lzma_options_lzma *options = xmalloc(sizeof(lzma_options_lzma));
    if (lzma_lzma_preset(options, LZMA_PRESET_DEFAULT))
        message_bug();
 
    parse_options(str, opts, &set_lzma, options);
 
    if (options->lc + options->lp > LZMA_LCLP_MAX)
        message_fatal(_("The sum of lc and lp must not exceed 4"));
 
    const uint32_t nice_len_min = options->mf & 0x0F;
    if (options->nice_len < nice_len_min)
        message_fatal(_("The selected match finder requires at "
                "least nice=%" PRIu32), nice_len_min);
 
    return options;
}

References _, LZMA_DICT_SIZE_MIN, LZMA_LCLP_MAX, LZMA_LCLP_MIN, LZMA_MF_BT2, LZMA_MF_BT3, LZMA_MF_BT4, LZMA_MF_HC3, LZMA_MF_HC4, LZMA_MODE_FAST, LZMA_MODE_NORMAL, LZMA_PB_MAX, LZMA_PB_MIN, LZMA_PRESET_DEFAULT, message_bug(), message_fatal(), NULL, options, parse_options(), PRIu32, set_lzma(), cmd_descs_generate::str, UINT32_C, UINT32_MAX, UINT64_MAX, and xmalloc.

Referenced by parse_real().