| 1 | /* |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This source code is licensed under both the BSD-style license (found in the |
| 6 | * LICENSE file in the root directory of this source tree) and the GPLv2 (found |
| 7 | * in the COPYING file in the root directory of this source tree). |
| 8 | * You may select, at your option, one of the above-listed licenses. |
| 9 | */ |
| 10 | |
| 11 | #include "method.h" |
| 12 | |
| 13 | #include <stdio.h> |
| 14 | #include <stdlib.h> |
| 15 | |
| 16 | #define ZSTD_STATIC_LINKING_ONLY |
| 17 | #include <zstd.h> |
| 18 | |
| 19 | #define MIN(x, y) ((x) < (y) ? (x) : (y)) |
| 20 | |
| 21 | static char const* g_zstdcli = NULL; |
| 22 | |
| 23 | void method_set_zstdcli(char const* zstdcli) { |
| 24 | g_zstdcli = zstdcli; |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * Macro to get a pointer of type, given ptr, which is a member variable with |
| 29 | * the given name, member. |
| 30 | * |
| 31 | * method_state_t* base = ...; |
| 32 | * buffer_state_t* state = container_of(base, buffer_state_t, base); |
| 33 | */ |
| 34 | #define container_of(ptr, type, member) \ |
| 35 | ((type*)(ptr == NULL ? NULL : (char*)(ptr)-offsetof(type, member))) |
| 36 | |
| 37 | /** State to reuse the same buffers between compression calls. */ |
| 38 | typedef struct { |
| 39 | method_state_t base; |
| 40 | data_buffers_t inputs; /**< The input buffer for each file. */ |
| 41 | data_buffer_t dictionary; /**< The dictionary. */ |
| 42 | data_buffer_t compressed; /**< The compressed data buffer. */ |
| 43 | data_buffer_t decompressed; /**< The decompressed data buffer. */ |
| 44 | } buffer_state_t; |
| 45 | |
| 46 | static size_t buffers_max_size(data_buffers_t buffers) { |
| 47 | size_t max = 0; |
| 48 | for (size_t i = 0; i < buffers.size; ++i) { |
| 49 | if (buffers.buffers[i].size > max) |
| 50 | max = buffers.buffers[i].size; |
| 51 | } |
| 52 | return max; |
| 53 | } |
| 54 | |
| 55 | static method_state_t* buffer_state_create(data_t const* data) { |
| 56 | buffer_state_t* state = (buffer_state_t*)calloc(1, sizeof(buffer_state_t)); |
| 57 | if (state == NULL) |
| 58 | return NULL; |
| 59 | state->base.data = data; |
| 60 | state->inputs = data_buffers_get(data); |
| 61 | state->dictionary = data_buffer_get_dict(data); |
| 62 | size_t const max_size = buffers_max_size(state->inputs); |
| 63 | state->compressed = data_buffer_create(ZSTD_compressBound(max_size)); |
| 64 | state->decompressed = data_buffer_create(max_size); |
| 65 | return &state->base; |
| 66 | } |
| 67 | |
| 68 | static void buffer_state_destroy(method_state_t* base) { |
| 69 | if (base == NULL) |
| 70 | return; |
| 71 | buffer_state_t* state = container_of(base, buffer_state_t, base); |
| 72 | free(state); |
| 73 | } |
| 74 | |
| 75 | static int buffer_state_bad( |
| 76 | buffer_state_t const* state, |
| 77 | config_t const* config) { |
| 78 | if (state == NULL) { |
| 79 | fprintf(stderr, "buffer_state_t is NULL\n"); |
| 80 | return 1; |
| 81 | } |
| 82 | if (state->inputs.size == 0 || state->compressed.data == NULL || |
| 83 | state->decompressed.data == NULL) { |
| 84 | fprintf(stderr, "buffer state allocation failure\n"); |
| 85 | return 1; |
| 86 | } |
| 87 | if (config->use_dictionary && state->dictionary.data == NULL) { |
| 88 | fprintf(stderr, "dictionary loading failed\n"); |
| 89 | return 1; |
| 90 | } |
| 91 | return 0; |
| 92 | } |
| 93 | |
| 94 | static result_t simple_compress(method_state_t* base, config_t const* config) { |
| 95 | buffer_state_t* state = container_of(base, buffer_state_t, base); |
| 96 | |
| 97 | if (buffer_state_bad(state, config)) |
| 98 | return result_error(result_error_system_error); |
| 99 | |
| 100 | /* Keep the tests short by skipping directories, since behavior shouldn't |
| 101 | * change. |
| 102 | */ |
| 103 | if (base->data->type != data_type_file) |
| 104 | return result_error(result_error_skip); |
| 105 | |
| 106 | if (config->advanced_api_only) |
| 107 | return result_error(result_error_skip); |
| 108 | |
| 109 | if (config->use_dictionary || config->no_pledged_src_size) |
| 110 | return result_error(result_error_skip); |
| 111 | |
| 112 | /* If the config doesn't specify a level, skip. */ |
| 113 | int const level = config_get_level(config); |
| 114 | if (level == CONFIG_NO_LEVEL) |
| 115 | return result_error(result_error_skip); |
| 116 | |
| 117 | data_buffer_t const input = state->inputs.buffers[0]; |
| 118 | |
| 119 | /* Compress, decompress, and check the result. */ |
| 120 | state->compressed.size = ZSTD_compress( |
| 121 | state->compressed.data, |
| 122 | state->compressed.capacity, |
| 123 | input.data, |
| 124 | input.size, |
| 125 | level); |
| 126 | if (ZSTD_isError(state->compressed.size)) |
| 127 | return result_error(result_error_compression_error); |
| 128 | |
| 129 | state->decompressed.size = ZSTD_decompress( |
| 130 | state->decompressed.data, |
| 131 | state->decompressed.capacity, |
| 132 | state->compressed.data, |
| 133 | state->compressed.size); |
| 134 | if (ZSTD_isError(state->decompressed.size)) |
| 135 | return result_error(result_error_decompression_error); |
| 136 | if (data_buffer_compare(input, state->decompressed)) |
| 137 | return result_error(result_error_round_trip_error); |
| 138 | |
| 139 | result_data_t data; |
| 140 | data.total_size = state->compressed.size; |
| 141 | return result_data(data); |
| 142 | } |
| 143 | |
| 144 | static result_t compress_cctx_compress( |
| 145 | method_state_t* base, |
| 146 | config_t const* config) { |
| 147 | buffer_state_t* state = container_of(base, buffer_state_t, base); |
| 148 | |
| 149 | if (buffer_state_bad(state, config)) |
| 150 | return result_error(result_error_system_error); |
| 151 | |
| 152 | if (config->no_pledged_src_size) |
| 153 | return result_error(result_error_skip); |
| 154 | |
| 155 | if (base->data->type != data_type_dir) |
| 156 | return result_error(result_error_skip); |
| 157 | |
| 158 | if (config->advanced_api_only) |
| 159 | return result_error(result_error_skip); |
| 160 | |
| 161 | int const level = config_get_level(config); |
| 162 | |
| 163 | ZSTD_CCtx* cctx = ZSTD_createCCtx(); |
| 164 | ZSTD_DCtx* dctx = ZSTD_createDCtx(); |
| 165 | if (cctx == NULL || dctx == NULL) { |
| 166 | fprintf(stderr, "context creation failed\n"); |
| 167 | return result_error(result_error_system_error); |
| 168 | } |
| 169 | |
| 170 | result_t result; |
| 171 | result_data_t data = {.total_size = 0}; |
| 172 | for (size_t i = 0; i < state->inputs.size; ++i) { |
| 173 | data_buffer_t const input = state->inputs.buffers[i]; |
| 174 | ZSTD_parameters const params = |
| 175 | config_get_zstd_params(config, input.size, state->dictionary.size); |
| 176 | |
| 177 | if (level == CONFIG_NO_LEVEL) |
| 178 | state->compressed.size = ZSTD_compress_advanced( |
| 179 | cctx, |
| 180 | state->compressed.data, |
| 181 | state->compressed.capacity, |
| 182 | input.data, |
| 183 | input.size, |
| 184 | config->use_dictionary ? state->dictionary.data : NULL, |
| 185 | config->use_dictionary ? state->dictionary.size : 0, |
| 186 | params); |
| 187 | else if (config->use_dictionary) |
| 188 | state->compressed.size = ZSTD_compress_usingDict( |
| 189 | cctx, |
| 190 | state->compressed.data, |
| 191 | state->compressed.capacity, |
| 192 | input.data, |
| 193 | input.size, |
| 194 | state->dictionary.data, |
| 195 | state->dictionary.size, |
| 196 | level); |
| 197 | else |
| 198 | state->compressed.size = ZSTD_compressCCtx( |
| 199 | cctx, |
| 200 | state->compressed.data, |
| 201 | state->compressed.capacity, |
| 202 | input.data, |
| 203 | input.size, |
| 204 | level); |
| 205 | |
| 206 | if (ZSTD_isError(state->compressed.size)) { |
| 207 | result = result_error(result_error_compression_error); |
| 208 | goto out; |
| 209 | } |
| 210 | |
| 211 | if (config->use_dictionary) |
| 212 | state->decompressed.size = ZSTD_decompress_usingDict( |
| 213 | dctx, |
| 214 | state->decompressed.data, |
| 215 | state->decompressed.capacity, |
| 216 | state->compressed.data, |
| 217 | state->compressed.size, |
| 218 | state->dictionary.data, |
| 219 | state->dictionary.size); |
| 220 | else |
| 221 | state->decompressed.size = ZSTD_decompressDCtx( |
| 222 | dctx, |
| 223 | state->decompressed.data, |
| 224 | state->decompressed.capacity, |
| 225 | state->compressed.data, |
| 226 | state->compressed.size); |
| 227 | if (ZSTD_isError(state->decompressed.size)) { |
| 228 | result = result_error(result_error_decompression_error); |
| 229 | goto out; |
| 230 | } |
| 231 | if (data_buffer_compare(input, state->decompressed)) { |
| 232 | result = result_error(result_error_round_trip_error); |
| 233 | goto out; |
| 234 | } |
| 235 | |
| 236 | data.total_size += state->compressed.size; |
| 237 | } |
| 238 | |
| 239 | result = result_data(data); |
| 240 | out: |
| 241 | ZSTD_freeCCtx(cctx); |
| 242 | ZSTD_freeDCtx(dctx); |
| 243 | return result; |
| 244 | } |
| 245 | |
| 246 | /** Generic state creation function. */ |
| 247 | static method_state_t* method_state_create(data_t const* data) { |
| 248 | method_state_t* state = (method_state_t*)malloc(sizeof(method_state_t)); |
| 249 | if (state == NULL) |
| 250 | return NULL; |
| 251 | state->data = data; |
| 252 | return state; |
| 253 | } |
| 254 | |
| 255 | static void method_state_destroy(method_state_t* state) { |
| 256 | free(state); |
| 257 | } |
| 258 | |
| 259 | static result_t cli_compress(method_state_t* state, config_t const* config) { |
| 260 | if (config->cli_args == NULL) |
| 261 | return result_error(result_error_skip); |
| 262 | |
| 263 | if (config->advanced_api_only) |
| 264 | return result_error(result_error_skip); |
| 265 | |
| 266 | /* We don't support no pledged source size with directories. Too slow. */ |
| 267 | if (state->data->type == data_type_dir && config->no_pledged_src_size) |
| 268 | return result_error(result_error_skip); |
| 269 | |
| 270 | if (g_zstdcli == NULL) |
| 271 | return result_error(result_error_system_error); |
| 272 | |
| 273 | /* '<zstd>' -cqr <args> [-D '<dict>'] '<file/dir>' */ |
| 274 | char cmd[1024]; |
| 275 | size_t const cmd_size = snprintf( |
| 276 | cmd, |
| 277 | sizeof(cmd), |
| 278 | "'%s' -cqr %s %s%s%s %s '%s'", |
| 279 | g_zstdcli, |
| 280 | config->cli_args, |
| 281 | config->use_dictionary ? "-D '" : "", |
| 282 | config->use_dictionary ? state->data->dict.path : "", |
| 283 | config->use_dictionary ? "'" : "", |
| 284 | config->no_pledged_src_size ? "<" : "", |
| 285 | state->data->data.path); |
| 286 | if (cmd_size >= sizeof(cmd)) { |
| 287 | fprintf(stderr, "command too large: %s\n", cmd); |
| 288 | return result_error(result_error_system_error); |
| 289 | } |
| 290 | FILE* zstd = popen(cmd, "r"); |
| 291 | if (zstd == NULL) { |
| 292 | fprintf(stderr, "failed to popen command: %s\n", cmd); |
| 293 | return result_error(result_error_system_error); |
| 294 | } |
| 295 | |
| 296 | char out[4096]; |
| 297 | size_t total_size = 0; |
| 298 | while (1) { |
| 299 | size_t const size = fread(out, 1, sizeof(out), zstd); |
| 300 | total_size += size; |
| 301 | if (size != sizeof(out)) |
| 302 | break; |
| 303 | } |
| 304 | if (ferror(zstd) || pclose(zstd) != 0) { |
| 305 | fprintf(stderr, "zstd failed with command: %s\n", cmd); |
| 306 | return result_error(result_error_compression_error); |
| 307 | } |
| 308 | |
| 309 | result_data_t const data = {.total_size = total_size}; |
| 310 | return result_data(data); |
| 311 | } |
| 312 | |
| 313 | static int advanced_config( |
| 314 | ZSTD_CCtx* cctx, |
| 315 | buffer_state_t* state, |
| 316 | config_t const* config) { |
| 317 | ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); |
| 318 | for (size_t p = 0; p < config->param_values.size; ++p) { |
| 319 | param_value_t const pv = config->param_values.data[p]; |
| 320 | if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, pv.param, pv.value))) { |
| 321 | return 1; |
| 322 | } |
| 323 | } |
| 324 | if (config->use_dictionary) { |
| 325 | if (ZSTD_isError(ZSTD_CCtx_loadDictionary( |
| 326 | cctx, state->dictionary.data, state->dictionary.size))) { |
| 327 | return 1; |
| 328 | } |
| 329 | } |
| 330 | return 0; |
| 331 | } |
| 332 | |
| 333 | static result_t advanced_one_pass_compress_output_adjustment( |
| 334 | method_state_t* base, |
| 335 | config_t const* config, |
| 336 | size_t const subtract) { |
| 337 | buffer_state_t* state = container_of(base, buffer_state_t, base); |
| 338 | |
| 339 | if (buffer_state_bad(state, config)) |
| 340 | return result_error(result_error_system_error); |
| 341 | |
| 342 | ZSTD_CCtx* cctx = ZSTD_createCCtx(); |
| 343 | result_t result; |
| 344 | |
| 345 | if (!cctx || advanced_config(cctx, state, config)) { |
| 346 | result = result_error(result_error_compression_error); |
| 347 | goto out; |
| 348 | } |
| 349 | |
| 350 | result_data_t data = {.total_size = 0}; |
| 351 | for (size_t i = 0; i < state->inputs.size; ++i) { |
| 352 | data_buffer_t const input = state->inputs.buffers[i]; |
| 353 | |
| 354 | if (!config->no_pledged_src_size) { |
| 355 | if (ZSTD_isError(ZSTD_CCtx_setPledgedSrcSize(cctx, input.size))) { |
| 356 | result = result_error(result_error_compression_error); |
| 357 | goto out; |
| 358 | } |
| 359 | } |
| 360 | size_t const size = ZSTD_compress2( |
| 361 | cctx, |
| 362 | state->compressed.data, |
| 363 | ZSTD_compressBound(input.size) - subtract, |
| 364 | input.data, |
| 365 | input.size); |
| 366 | if (ZSTD_isError(size)) { |
| 367 | result = result_error(result_error_compression_error); |
| 368 | goto out; |
| 369 | } |
| 370 | data.total_size += size; |
| 371 | } |
| 372 | |
| 373 | result = result_data(data); |
| 374 | out: |
| 375 | ZSTD_freeCCtx(cctx); |
| 376 | return result; |
| 377 | } |
| 378 | |
| 379 | static result_t advanced_one_pass_compress( |
| 380 | method_state_t* base, |
| 381 | config_t const* config) { |
| 382 | return advanced_one_pass_compress_output_adjustment(base, config, 0); |
| 383 | } |
| 384 | |
| 385 | static result_t advanced_one_pass_compress_small_output( |
| 386 | method_state_t* base, |
| 387 | config_t const* config) { |
| 388 | return advanced_one_pass_compress_output_adjustment(base, config, 1); |
| 389 | } |
| 390 | |
| 391 | static result_t advanced_streaming_compress( |
| 392 | method_state_t* base, |
| 393 | config_t const* config) { |
| 394 | buffer_state_t* state = container_of(base, buffer_state_t, base); |
| 395 | |
| 396 | if (buffer_state_bad(state, config)) |
| 397 | return result_error(result_error_system_error); |
| 398 | |
| 399 | ZSTD_CCtx* cctx = ZSTD_createCCtx(); |
| 400 | result_t result; |
| 401 | |
| 402 | if (!cctx || advanced_config(cctx, state, config)) { |
| 403 | result = result_error(result_error_compression_error); |
| 404 | goto out; |
| 405 | } |
| 406 | |
| 407 | result_data_t data = {.total_size = 0}; |
| 408 | for (size_t i = 0; i < state->inputs.size; ++i) { |
| 409 | data_buffer_t input = state->inputs.buffers[i]; |
| 410 | |
| 411 | if (!config->no_pledged_src_size) { |
| 412 | if (ZSTD_isError(ZSTD_CCtx_setPledgedSrcSize(cctx, input.size))) { |
| 413 | result = result_error(result_error_compression_error); |
| 414 | goto out; |
| 415 | } |
| 416 | } |
| 417 | |
| 418 | while (input.size > 0) { |
| 419 | ZSTD_inBuffer in = {input.data, MIN(input.size, 4096)}; |
| 420 | input.data += in.size; |
| 421 | input.size -= in.size; |
| 422 | ZSTD_EndDirective const op = |
| 423 | input.size > 0 ? ZSTD_e_continue : ZSTD_e_end; |
| 424 | size_t ret = 0; |
| 425 | while (in.pos < in.size || (op == ZSTD_e_end && ret != 0)) { |
| 426 | ZSTD_outBuffer out = {state->compressed.data, |
| 427 | MIN(state->compressed.capacity, 1024)}; |
| 428 | ret = ZSTD_compressStream2(cctx, &out, &in, op); |
| 429 | if (ZSTD_isError(ret)) { |
| 430 | result = result_error(result_error_compression_error); |
| 431 | goto out; |
| 432 | } |
| 433 | data.total_size += out.pos; |
| 434 | } |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | result = result_data(data); |
| 439 | out: |
| 440 | ZSTD_freeCCtx(cctx); |
| 441 | return result; |
| 442 | } |
| 443 | |
| 444 | static int init_cstream( |
| 445 | buffer_state_t* state, |
| 446 | ZSTD_CStream* zcs, |
| 447 | config_t const* config, |
| 448 | int const advanced, |
| 449 | ZSTD_CDict** cdict) |
| 450 | { |
| 451 | size_t zret; |
| 452 | if (advanced) { |
| 453 | ZSTD_parameters const params = config_get_zstd_params(config, 0, 0); |
| 454 | ZSTD_CDict* dict = NULL; |
| 455 | if (cdict) { |
| 456 | if (!config->use_dictionary) |
| 457 | return 1; |
| 458 | *cdict = ZSTD_createCDict_advanced( |
| 459 | state->dictionary.data, |
| 460 | state->dictionary.size, |
| 461 | ZSTD_dlm_byRef, |
| 462 | ZSTD_dct_auto, |
| 463 | params.cParams, |
| 464 | ZSTD_defaultCMem); |
| 465 | if (!*cdict) { |
| 466 | return 1; |
| 467 | } |
| 468 | zret = ZSTD_initCStream_usingCDict_advanced( |
| 469 | zcs, *cdict, params.fParams, ZSTD_CONTENTSIZE_UNKNOWN); |
| 470 | } else { |
| 471 | zret = ZSTD_initCStream_advanced( |
| 472 | zcs, |
| 473 | config->use_dictionary ? state->dictionary.data : NULL, |
| 474 | config->use_dictionary ? state->dictionary.size : 0, |
| 475 | params, |
| 476 | ZSTD_CONTENTSIZE_UNKNOWN); |
| 477 | } |
| 478 | } else { |
| 479 | int const level = config_get_level(config); |
| 480 | if (level == CONFIG_NO_LEVEL) |
| 481 | return 1; |
| 482 | if (cdict) { |
| 483 | if (!config->use_dictionary) |
| 484 | return 1; |
| 485 | *cdict = ZSTD_createCDict( |
| 486 | state->dictionary.data, |
| 487 | state->dictionary.size, |
| 488 | level); |
| 489 | if (!*cdict) { |
| 490 | return 1; |
| 491 | } |
| 492 | zret = ZSTD_initCStream_usingCDict(zcs, *cdict); |
| 493 | } else if (config->use_dictionary) { |
| 494 | zret = ZSTD_initCStream_usingDict( |
| 495 | zcs, |
| 496 | state->dictionary.data, |
| 497 | state->dictionary.size, |
| 498 | level); |
| 499 | } else { |
| 500 | zret = ZSTD_initCStream(zcs, level); |
| 501 | } |
| 502 | } |
| 503 | if (ZSTD_isError(zret)) { |
| 504 | return 1; |
| 505 | } |
| 506 | return 0; |
| 507 | } |
| 508 | |
| 509 | static result_t old_streaming_compress_internal( |
| 510 | method_state_t* base, |
| 511 | config_t const* config, |
| 512 | int const advanced, |
| 513 | int const cdict) { |
| 514 | buffer_state_t* state = container_of(base, buffer_state_t, base); |
| 515 | |
| 516 | if (buffer_state_bad(state, config)) |
| 517 | return result_error(result_error_system_error); |
| 518 | |
| 519 | |
| 520 | ZSTD_CStream* zcs = ZSTD_createCStream(); |
| 521 | ZSTD_CDict* cd = NULL; |
| 522 | result_t result; |
| 523 | if (zcs == NULL) { |
| 524 | result = result_error(result_error_compression_error); |
| 525 | goto out; |
| 526 | } |
| 527 | if (!advanced && config_get_level(config) == CONFIG_NO_LEVEL) { |
| 528 | result = result_error(result_error_skip); |
| 529 | goto out; |
| 530 | } |
| 531 | if (cdict && !config->use_dictionary) { |
| 532 | result = result_error(result_error_skip); |
| 533 | goto out; |
| 534 | } |
| 535 | if (config->advanced_api_only) { |
| 536 | result = result_error(result_error_skip); |
| 537 | goto out; |
| 538 | } |
| 539 | if (init_cstream(state, zcs, config, advanced, cdict ? &cd : NULL)) { |
| 540 | result = result_error(result_error_compression_error); |
| 541 | goto out; |
| 542 | } |
| 543 | |
| 544 | result_data_t data = {.total_size = 0}; |
| 545 | for (size_t i = 0; i < state->inputs.size; ++i) { |
| 546 | data_buffer_t input = state->inputs.buffers[i]; |
| 547 | size_t zret = ZSTD_resetCStream( |
| 548 | zcs, |
| 549 | config->no_pledged_src_size ? ZSTD_CONTENTSIZE_UNKNOWN : input.size); |
| 550 | if (ZSTD_isError(zret)) { |
| 551 | result = result_error(result_error_compression_error); |
| 552 | goto out; |
| 553 | } |
| 554 | |
| 555 | while (input.size > 0) { |
| 556 | ZSTD_inBuffer in = {input.data, MIN(input.size, 4096)}; |
| 557 | input.data += in.size; |
| 558 | input.size -= in.size; |
| 559 | ZSTD_EndDirective const op = |
| 560 | input.size > 0 ? ZSTD_e_continue : ZSTD_e_end; |
| 561 | zret = 0; |
| 562 | while (in.pos < in.size || (op == ZSTD_e_end && zret != 0)) { |
| 563 | ZSTD_outBuffer out = {state->compressed.data, |
| 564 | MIN(state->compressed.capacity, 1024)}; |
| 565 | if (op == ZSTD_e_continue || in.pos < in.size) |
| 566 | zret = ZSTD_compressStream(zcs, &out, &in); |
| 567 | else |
| 568 | zret = ZSTD_endStream(zcs, &out); |
| 569 | if (ZSTD_isError(zret)) { |
| 570 | result = result_error(result_error_compression_error); |
| 571 | goto out; |
| 572 | } |
| 573 | data.total_size += out.pos; |
| 574 | } |
| 575 | } |
| 576 | } |
| 577 | |
| 578 | result = result_data(data); |
| 579 | out: |
| 580 | ZSTD_freeCStream(zcs); |
| 581 | ZSTD_freeCDict(cd); |
| 582 | return result; |
| 583 | } |
| 584 | |
| 585 | static result_t old_streaming_compress( |
| 586 | method_state_t* base, |
| 587 | config_t const* config) |
| 588 | { |
| 589 | return old_streaming_compress_internal( |
| 590 | base, config, /* advanced */ 0, /* cdict */ 0); |
| 591 | } |
| 592 | |
| 593 | static result_t old_streaming_compress_advanced( |
| 594 | method_state_t* base, |
| 595 | config_t const* config) |
| 596 | { |
| 597 | return old_streaming_compress_internal( |
| 598 | base, config, /* advanced */ 1, /* cdict */ 0); |
| 599 | } |
| 600 | |
| 601 | static result_t old_streaming_compress_cdict( |
| 602 | method_state_t* base, |
| 603 | config_t const* config) |
| 604 | { |
| 605 | return old_streaming_compress_internal( |
| 606 | base, config, /* advanced */ 0, /* cdict */ 1); |
| 607 | } |
| 608 | |
| 609 | static result_t old_streaming_compress_cdict_advanced( |
| 610 | method_state_t* base, |
| 611 | config_t const* config) |
| 612 | { |
| 613 | return old_streaming_compress_internal( |
| 614 | base, config, /* advanced */ 1, /* cdict */ 1); |
| 615 | } |
| 616 | |
| 617 | method_t const simple = { |
| 618 | .name = "compress simple", |
| 619 | .create = buffer_state_create, |
| 620 | .compress = simple_compress, |
| 621 | .destroy = buffer_state_destroy, |
| 622 | }; |
| 623 | |
| 624 | method_t const compress_cctx = { |
| 625 | .name = "compress cctx", |
| 626 | .create = buffer_state_create, |
| 627 | .compress = compress_cctx_compress, |
| 628 | .destroy = buffer_state_destroy, |
| 629 | }; |
| 630 | |
| 631 | method_t const advanced_one_pass = { |
| 632 | .name = "advanced one pass", |
| 633 | .create = buffer_state_create, |
| 634 | .compress = advanced_one_pass_compress, |
| 635 | .destroy = buffer_state_destroy, |
| 636 | }; |
| 637 | |
| 638 | method_t const advanced_one_pass_small_out = { |
| 639 | .name = "advanced one pass small out", |
| 640 | .create = buffer_state_create, |
| 641 | .compress = advanced_one_pass_compress, |
| 642 | .destroy = buffer_state_destroy, |
| 643 | }; |
| 644 | |
| 645 | method_t const advanced_streaming = { |
| 646 | .name = "advanced streaming", |
| 647 | .create = buffer_state_create, |
| 648 | .compress = advanced_streaming_compress, |
| 649 | .destroy = buffer_state_destroy, |
| 650 | }; |
| 651 | |
| 652 | method_t const old_streaming = { |
| 653 | .name = "old streaming", |
| 654 | .create = buffer_state_create, |
| 655 | .compress = old_streaming_compress, |
| 656 | .destroy = buffer_state_destroy, |
| 657 | }; |
| 658 | |
| 659 | method_t const old_streaming_advanced = { |
| 660 | .name = "old streaming advanced", |
| 661 | .create = buffer_state_create, |
| 662 | .compress = old_streaming_compress_advanced, |
| 663 | .destroy = buffer_state_destroy, |
| 664 | }; |
| 665 | |
| 666 | method_t const old_streaming_cdict = { |
| 667 | .name = "old streaming cdict", |
| 668 | .create = buffer_state_create, |
| 669 | .compress = old_streaming_compress_cdict, |
| 670 | .destroy = buffer_state_destroy, |
| 671 | }; |
| 672 | |
| 673 | method_t const old_streaming_advanced_cdict = { |
| 674 | .name = "old streaming advanced cdict", |
| 675 | .create = buffer_state_create, |
| 676 | .compress = old_streaming_compress_cdict_advanced, |
| 677 | .destroy = buffer_state_destroy, |
| 678 | }; |
| 679 | |
| 680 | method_t const cli = { |
| 681 | .name = "zstdcli", |
| 682 | .create = method_state_create, |
| 683 | .compress = cli_compress, |
| 684 | .destroy = method_state_destroy, |
| 685 | }; |
| 686 | |
| 687 | static method_t const* g_methods[] = { |
| 688 | &simple, |
| 689 | &compress_cctx, |
| 690 | &cli, |
| 691 | &advanced_one_pass, |
| 692 | &advanced_one_pass_small_out, |
| 693 | &advanced_streaming, |
| 694 | &old_streaming, |
| 695 | &old_streaming_advanced, |
| 696 | &old_streaming_cdict, |
| 697 | &old_streaming_advanced_cdict, |
| 698 | NULL, |
| 699 | }; |
| 700 | |
| 701 | method_t const* const* methods = g_methods; |