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 minmatch: nil
opts targetlength: nil
opts strategy: nil


258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
 
# File 'ext/extzstd.c', line 258

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.minMatch, opts, "minmatch", NUM2UINT);
        SETUP_PARAM(p->cParams.targetLength, opts, "targetlength", NUM2UINT);
        SETUP_PARAM(p->cParams.strategy, opts, "strategy", NUM2UINT);
        SETUP_PARAM(p->fParams.contentSizeFlag, opts, "contentsize", RTEST);
        SETUP_PARAM(p->fParams.checksumFlag, opts, "checksum", RTEST);
        SETUP_PARAM(p->fParams.noDictIDFlag, opts, "nodictid", RTEST);
#undef SETUP_PARAM
    }

    return v;
}

Class Method Details

.preset(argv[], mod) ⇒ Object 



342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
 
# File 'ext/extzstd.c', line 342

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 



299
300
301
302
303
304
305
306
307
308
 
# File 'ext/extzstd.c', line 299

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 



152
153
154
155
156
 
# File 'lib/extzstd.rb', line 152

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

#minmatch ⇒ Object

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

#minmatch= ⇒ Object

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

#pretty_print(q) ⇒ Object 



158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
 
# File 'lib/extzstd.rb', line 158

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

#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.