Class: Zstd::Parameters

Inherits:
Object
  • Object
show all
Defined in:
lib/extzstd.rb,
ext/extzstd.c

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(preset_level = 1, srcsize_hint = 0, dictsize = 0, opts = {}) ⇒ Object

Initialize struct ZSTD_parameters of C layer.

preset_level = 1
srcsize_hint = 0
opts windowlog: nil
opts contentlog: nil
opts hashlog: nil
opts searchlog: nil
opts searchlength: nil
opts targetlength: nil
opts strategy: nil


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# File 'ext/extzstd.c', line 250

static VALUE
params_init(int argc, VALUE argv[], VALUE v)
{
    ZSTD_parameters *p = getparams(v);
    uint64_t sizehint;
    size_t dictsize;
    int level;
    VALUE opts = Qnil;

    argc = rb_scan_args(argc, argv, "03:", NULL, NULL, NULL, &opts);
    level = argc > 0 ? aux_num2int(argv[0], 0) : 0;
    sizehint = argc > 1 ? aux_num2int_u64(argv[1], 0) : 0;
    dictsize = argc > 2 ? aux_num2int_u64(argv[2], 0) : 0;

    *p = ZSTD_getParams(level, sizehint, dictsize);

    if (!NIL_P(opts)) {
#define SETUP_PARAM(var, opts, key, converter)                          \
        do {                                                            \
            VALUE tmp = rb_hash_lookup(opts, ID2SYM(rb_intern(key)));   \
            if (!NIL_P(tmp)) {                                          \
                var = converter(tmp);                                   \
            }                                                           \
        } while (0)                                                     \

        SETUP_PARAM(p->cParams.windowLog, opts, "windowlog", NUM2UINT);
        SETUP_PARAM(p->cParams.chainLog, opts, "chainlog", NUM2UINT);
        SETUP_PARAM(p->cParams.hashLog, opts, "hashlog", NUM2UINT);
        SETUP_PARAM(p->cParams.searchLog, opts, "searchlog", NUM2UINT);
        SETUP_PARAM(p->cParams.searchLength, opts, "searchlength", NUM2UINT);
        SETUP_PARAM(p->cParams.targetLength, opts, "targetlength", NUM2UINT);
        SETUP_PARAM(p->cParams.strategy, opts, "strategy", NUM2UINT);
#undef SETUP_PARAM
    }

    return v;
}

Class Method Details

.preset(argv[], mod) ⇒ Object 



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# File 'ext/extzstd.c', line 331

static VALUE
params_s_get_preset(int argc, VALUE argv[], VALUE mod)
{
    int level;
    uint64_t sizehint;
    size_t dictsize;

    switch (argc) {
    case 0:
        level = 0;
        sizehint = 0;
        dictsize = 0;
        break;
    case 1:
        level = NUM2INT(argv[0]);
        sizehint = 0;
        dictsize = 0;
        break;
    case 2:
        level = NUM2INT(argv[0]);
        sizehint = NUM2ULL(argv[1]);
        dictsize = 0;
        break;
    case 3:
        level = NUM2INT(argv[0]);
        sizehint = NUM2ULL(argv[1]);
        dictsize = NUM2SIZET(argv[2]);
        break;
    default:
        rb_error_arity(argc, 0, 3);
    }

    ZSTD_parameters *p;
    VALUE v = TypedData_Make_Struct(mod, ZSTD_parameters, &params_type, p);
    *p = ZSTD_getParams(level, sizehint, dictsize);
    return v;
}

Instance Method Details

#chainlog ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#chainlog= ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#hashlog ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#hashlog= ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#initialize_copy(src) ⇒ Object 



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# File 'ext/extzstd.c', line 288

static VALUE
params_init_copy(VALUE params, VALUE src)
{
    ZSTD_parameters *a = getparams(params);
    ZSTD_parameters *b = getparams(src);
    rb_check_frozen(params);
    rb_obj_infect(params, src);
    memcpy(a, b, sizeof(*a));
    return params;
}

#inspect ⇒ Object 



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# File 'lib/extzstd.rb', line 296

def inspect
  "#<#{self.class} windowlog=#{windowlog}, chainlog=#{chainlog}, " \
    "hashlog=#{hashlog}, searchlog=#{searchlog}, " \
    "searchlength=#{searchlength}, strategy=#{strategy}>"
end

#pretty_print(q) ⇒ Object 



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# File 'lib/extzstd.rb', line 302

def pretty_print(q)
  q.group(2, "#<#{self.class}") do
    q.breakable " "
    q.text "windowlog=#{windowlog},"
    q.breakable " "
    q.text "chainlog=#{chainlog},"
    q.breakable " "
    q.text "hashlog=#{hashlog},"
    q.breakable " "
    q.text "searchlog=#{searchlog},"
    q.breakable " "
    q.text "searchlength=#{searchlength},"
    q.breakable " "
    q.text "targetlength=#{targetlength},"
    q.breakable " "
    q.text "strategy=#{strategy}>"
  end
end

#searchlength ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#searchlength= ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#searchlog ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#searchlog= ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#strategy ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#strategy= ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#targetlength ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#targetlength= ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#windowlog ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.

#windowlog= ⇒ Object

Get/Set any field from/to struct ZSTD_parameters of C layer.