| 1 | /* example.c contains minimal changes required to be compiled with zlibWrapper: |
| 2 | * - #include "zlib.h" was changed to #include "zstd_zlibwrapper.h" |
| 3 | * - test_flush() and test_sync() use functions not supported by zlibWrapper |
| 4 | therefore they are disabled while zstd compression is turned on */ |
| 5 | |
| 6 | /* example.c -- usage example of the zlib compression library |
| 7 | */ |
| 8 | /* |
| 9 | Copyright (c) 1995-2006, 2011 Jean-loup Gailly |
| 10 | |
| 11 | This software is provided 'as-is', without any express or implied |
| 12 | warranty. In no event will the authors be held liable for any damages |
| 13 | arising from the use of this software. |
| 14 | |
| 15 | Permission is granted to anyone to use this software for any purpose, |
| 16 | including commercial applications, and to alter it and redistribute it |
| 17 | freely, subject to the following restrictions: |
| 18 | |
| 19 | 1. The origin of this software must not be misrepresented; you must not |
| 20 | claim that you wrote the original software. If you use this software |
| 21 | in a product, an acknowledgement in the product documentation would be |
| 22 | appreciated but is not required. |
| 23 | 2. Altered source versions must be plainly marked as such, and must not be |
| 24 | misrepresented as being the original software. |
| 25 | 3. This notice may not be removed or altered from any source distribution. |
| 26 | */ |
| 27 | |
| 28 | /* @(#) $Id$ */ |
| 29 | |
| 30 | #include "zstd_zlibwrapper.h" |
| 31 | #include <stdio.h> |
| 32 | |
| 33 | #ifdef STDC |
| 34 | # include <string.h> |
| 35 | # include <stdlib.h> |
| 36 | #endif |
| 37 | |
| 38 | #if defined(VMS) || defined(RISCOS) |
| 39 | # define TESTFILE "foo-gz" |
| 40 | #else |
| 41 | # define TESTFILE "foo.gz" |
| 42 | #endif |
| 43 | |
| 44 | #define CHECK_ERR(err, msg) { \ |
| 45 | if (err != Z_OK) { \ |
| 46 | fprintf(stderr, "%s error: %d\n", msg, err); \ |
| 47 | exit(1); \ |
| 48 | } \ |
| 49 | } |
| 50 | |
| 51 | z_const char hello[] = "hello, hello! I said hello, hello!"; |
| 52 | /* "hello world" would be more standard, but the repeated "hello" |
| 53 | * stresses the compression code better, sorry... |
| 54 | */ |
| 55 | |
| 56 | const char dictionary[] = "hello, hello!"; |
| 57 | uLong dictId; /* Adler32 value of the dictionary */ |
| 58 | |
| 59 | void test_deflate _Z_OF((Byte *compr, uLong comprLen)); |
| 60 | void test_inflate _Z_OF((Byte *compr, uLong comprLen, |
| 61 | Byte *uncompr, uLong uncomprLen)); |
| 62 | void test_large_deflate _Z_OF((Byte *compr, uLong comprLen, |
| 63 | Byte *uncompr, uLong uncomprLen)); |
| 64 | void test_large_inflate _Z_OF((Byte *compr, uLong comprLen, |
| 65 | Byte *uncompr, uLong uncomprLen)); |
| 66 | void test_flush _Z_OF((Byte *compr, uLong *comprLen)); |
| 67 | void test_sync _Z_OF((Byte *compr, uLong comprLen, |
| 68 | Byte *uncompr, uLong uncomprLen)); |
| 69 | void test_dict_deflate _Z_OF((Byte *compr, uLong comprLen)); |
| 70 | void test_dict_inflate _Z_OF((Byte *compr, uLong comprLen, |
| 71 | Byte *uncompr, uLong uncomprLen)); |
| 72 | int main _Z_OF((int argc, char *argv[])); |
| 73 | |
| 74 | |
| 75 | #ifdef Z_SOLO |
| 76 | |
| 77 | void *myalloc _Z_OF((void *, unsigned, unsigned)); |
| 78 | void myfree _Z_OF((void *, void *)); |
| 79 | |
| 80 | void *myalloc(q, n, m) |
| 81 | void *q; |
| 82 | unsigned n, m; |
| 83 | { |
| 84 | void *buf = calloc(n, m); |
| 85 | q = Z_NULL; |
| 86 | /* printf("myalloc %p n=%d m=%d\n", buf, n, m); */ |
| 87 | return buf; |
| 88 | } |
| 89 | |
| 90 | void myfree(void *q, void *p) |
| 91 | { |
| 92 | /* printf("myfree %p\n", p); */ |
| 93 | q = Z_NULL; |
| 94 | free(p); |
| 95 | } |
| 96 | |
| 97 | static alloc_func zalloc = myalloc; |
| 98 | static free_func zfree = myfree; |
| 99 | |
| 100 | #else /* !Z_SOLO */ |
| 101 | |
| 102 | static alloc_func zalloc = (alloc_func)0; |
| 103 | static free_func zfree = (free_func)0; |
| 104 | |
| 105 | void test_compress _Z_OF((Byte *compr, uLong comprLen, |
| 106 | Byte *uncompr, uLong uncomprLen)); |
| 107 | void test_gzio _Z_OF((const char *fname, |
| 108 | Byte *uncompr, uLong uncomprLen)); |
| 109 | |
| 110 | /* =========================================================================== |
| 111 | * Test compress() and uncompress() |
| 112 | */ |
| 113 | void test_compress(compr, comprLen, uncompr, uncomprLen) |
| 114 | Byte *compr, *uncompr; |
| 115 | uLong comprLen, uncomprLen; |
| 116 | { |
| 117 | int err; |
| 118 | uLong len = (uLong)strlen(hello)+1; |
| 119 | |
| 120 | err = compress(compr, &comprLen, (const Bytef*)hello, len); |
| 121 | CHECK_ERR(err, "compress"); |
| 122 | |
| 123 | strcpy((char*)uncompr, "garbage"); |
| 124 | |
| 125 | err = uncompress(uncompr, &uncomprLen, compr, comprLen); |
| 126 | CHECK_ERR(err, "uncompress"); |
| 127 | |
| 128 | if (strcmp((char*)uncompr, hello)) { |
| 129 | fprintf(stderr, "bad uncompress\n"); |
| 130 | exit(1); |
| 131 | } else { |
| 132 | printf("uncompress(): %s\n", (char *)uncompr); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | /* =========================================================================== |
| 137 | * Test read/write of .gz files |
| 138 | */ |
| 139 | void test_gzio(fname, uncompr, uncomprLen) |
| 140 | const char *fname; /* compressed file name */ |
| 141 | Byte *uncompr; |
| 142 | uLong uncomprLen; |
| 143 | { |
| 144 | #ifdef NO_GZCOMPRESS |
| 145 | fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n"); |
| 146 | #else |
| 147 | int err; |
| 148 | int len = (int)strlen(hello)+1; |
| 149 | gzFile file; |
| 150 | z_off_t pos; |
| 151 | |
| 152 | file = gzopen(fname, "wb"); |
| 153 | if (file == NULL) { |
| 154 | fprintf(stderr, "gzopen error\n"); |
| 155 | exit(1); |
| 156 | } |
| 157 | gzputc(file, 'h'); |
| 158 | if (gzputs(file, "ello") != 4) { |
| 159 | fprintf(stderr, "gzputs err: %s\n", gzerror(file, &err)); |
| 160 | exit(1); |
| 161 | } |
| 162 | if (gzprintf(file, ", %s! I said hello, hello!", "hello") != 8+21) { |
| 163 | fprintf(stderr, "gzprintf err: %s\n", gzerror(file, &err)); |
| 164 | exit(1); |
| 165 | } |
| 166 | gzseek(file, 1L, SEEK_CUR); /* add one zero byte */ |
| 167 | gzclose(file); |
| 168 | |
| 169 | file = gzopen(fname, "rb"); |
| 170 | if (file == NULL) { |
| 171 | fprintf(stderr, "gzopen error\n"); |
| 172 | exit(1); |
| 173 | } |
| 174 | strcpy((char*)uncompr, "garbage"); |
| 175 | |
| 176 | if (gzread(file, uncompr, (unsigned)uncomprLen) != len) { |
| 177 | fprintf(stderr, "gzread err: %s\n", gzerror(file, &err)); |
| 178 | exit(1); |
| 179 | } |
| 180 | if (strcmp((char*)uncompr, hello)) { |
| 181 | fprintf(stderr, "bad gzread: %s\n", (char*)uncompr); |
| 182 | exit(1); |
| 183 | } else { |
| 184 | printf("gzread(): %s\n", (char*)uncompr); |
| 185 | } |
| 186 | |
| 187 | pos = gzseek(file, -8L, SEEK_CUR); |
| 188 | if (pos != 6+21 || gztell(file) != pos) { |
| 189 | fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n", |
| 190 | (long)pos, (long)gztell(file)); |
| 191 | exit(1); |
| 192 | } |
| 193 | |
| 194 | if (gzgetc(file) != ' ') { |
| 195 | fprintf(stderr, "gzgetc error\n"); |
| 196 | exit(1); |
| 197 | } |
| 198 | |
| 199 | if (gzungetc(' ', file) != ' ') { |
| 200 | fprintf(stderr, "gzungetc error\n"); |
| 201 | exit(1); |
| 202 | } |
| 203 | |
| 204 | gzgets(file, (char*)uncompr, (int)uncomprLen); |
| 205 | if (strlen((char*)uncompr) != 7) { /* " hello!" */ |
| 206 | fprintf(stderr, "gzgets err after gzseek: %s\n", gzerror(file, &err)); |
| 207 | exit(1); |
| 208 | } |
| 209 | if (strcmp((char*)uncompr, hello + 6+21)) { |
| 210 | fprintf(stderr, "bad gzgets after gzseek\n"); |
| 211 | exit(1); |
| 212 | } else { |
| 213 | printf("gzgets() after gzseek: %s\n", (char*)uncompr); |
| 214 | } |
| 215 | |
| 216 | gzclose(file); |
| 217 | #endif |
| 218 | } |
| 219 | |
| 220 | #endif /* Z_SOLO */ |
| 221 | |
| 222 | /* =========================================================================== |
| 223 | * Test deflate() with small buffers |
| 224 | */ |
| 225 | void test_deflate(compr, comprLen) |
| 226 | Byte *compr; |
| 227 | uLong comprLen; |
| 228 | { |
| 229 | z_stream c_stream; /* compression stream */ |
| 230 | int err; |
| 231 | uLong len = (uLong)strlen(hello)+1; |
| 232 | |
| 233 | c_stream.zalloc = zalloc; |
| 234 | c_stream.zfree = zfree; |
| 235 | c_stream.opaque = (voidpf)0; |
| 236 | |
| 237 | err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); |
| 238 | CHECK_ERR(err, "deflateInit"); |
| 239 | |
| 240 | c_stream.next_in = (z_const unsigned char *)hello; |
| 241 | c_stream.next_out = compr; |
| 242 | |
| 243 | while (c_stream.total_in != len && c_stream.total_out < comprLen) { |
| 244 | c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ |
| 245 | err = deflate(&c_stream, Z_NO_FLUSH); |
| 246 | CHECK_ERR(err, "deflate"); |
| 247 | } |
| 248 | /* Finish the stream, still forcing small buffers: */ |
| 249 | for (;;) { |
| 250 | c_stream.avail_out = 1; |
| 251 | err = deflate(&c_stream, Z_FINISH); |
| 252 | if (err == Z_STREAM_END) break; |
| 253 | CHECK_ERR(err, "deflate"); |
| 254 | } |
| 255 | |
| 256 | err = deflateEnd(&c_stream); |
| 257 | CHECK_ERR(err, "deflateEnd"); |
| 258 | } |
| 259 | |
| 260 | /* =========================================================================== |
| 261 | * Test inflate() with small buffers |
| 262 | */ |
| 263 | void test_inflate(compr, comprLen, uncompr, uncomprLen) |
| 264 | Byte *compr, *uncompr; |
| 265 | uLong comprLen, uncomprLen; |
| 266 | { |
| 267 | int err; |
| 268 | z_stream d_stream; /* decompression stream */ |
| 269 | |
| 270 | strcpy((char*)uncompr, "garbage"); |
| 271 | |
| 272 | d_stream.zalloc = zalloc; |
| 273 | d_stream.zfree = zfree; |
| 274 | d_stream.opaque = (voidpf)0; |
| 275 | |
| 276 | d_stream.next_in = compr; |
| 277 | d_stream.avail_in = 0; |
| 278 | d_stream.next_out = uncompr; |
| 279 | |
| 280 | err = inflateInit(&d_stream); |
| 281 | CHECK_ERR(err, "inflateInit"); |
| 282 | |
| 283 | while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) { |
| 284 | d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */ |
| 285 | err = inflate(&d_stream, Z_NO_FLUSH); |
| 286 | if (err == Z_STREAM_END) break; |
| 287 | CHECK_ERR(err, "inflate"); |
| 288 | } |
| 289 | |
| 290 | err = inflateEnd(&d_stream); |
| 291 | CHECK_ERR(err, "inflateEnd"); |
| 292 | |
| 293 | if (strcmp((char*)uncompr, hello)) { |
| 294 | fprintf(stderr, "bad inflate\n"); |
| 295 | exit(1); |
| 296 | } else { |
| 297 | printf("inflate(): %s\n", (char *)uncompr); |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | /* =========================================================================== |
| 302 | * Test deflate() with large buffers and dynamic change of compression level |
| 303 | */ |
| 304 | void test_large_deflate(compr, comprLen, uncompr, uncomprLen) |
| 305 | Byte *compr, *uncompr; |
| 306 | uLong comprLen, uncomprLen; |
| 307 | { |
| 308 | z_stream c_stream; /* compression stream */ |
| 309 | int err; |
| 310 | |
| 311 | c_stream.zalloc = zalloc; |
| 312 | c_stream.zfree = zfree; |
| 313 | c_stream.opaque = (voidpf)0; |
| 314 | |
| 315 | err = deflateInit(&c_stream, Z_BEST_SPEED); |
| 316 | CHECK_ERR(err, "deflateInit"); |
| 317 | |
| 318 | c_stream.next_out = compr; |
| 319 | c_stream.avail_out = (uInt)comprLen; |
| 320 | |
| 321 | /* At this point, uncompr is still mostly zeroes, so it should compress |
| 322 | * very well: |
| 323 | */ |
| 324 | c_stream.next_in = uncompr; |
| 325 | c_stream.avail_in = (uInt)uncomprLen; |
| 326 | err = deflate(&c_stream, Z_NO_FLUSH); |
| 327 | CHECK_ERR(err, "deflate"); |
| 328 | if (c_stream.avail_in != 0) { |
| 329 | fprintf(stderr, "deflate not greedy\n"); |
| 330 | exit(1); |
| 331 | } |
| 332 | |
| 333 | /* Feed in already compressed data and switch to no compression: */ |
| 334 | deflateParams(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY); |
| 335 | c_stream.next_in = compr; |
| 336 | c_stream.avail_in = (uInt)comprLen/2; |
| 337 | err = deflate(&c_stream, Z_NO_FLUSH); |
| 338 | CHECK_ERR(err, "deflate"); |
| 339 | |
| 340 | /* Switch back to compressing mode: */ |
| 341 | deflateParams(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED); |
| 342 | c_stream.next_in = uncompr; |
| 343 | c_stream.avail_in = (uInt)uncomprLen; |
| 344 | err = deflate(&c_stream, Z_NO_FLUSH); |
| 345 | CHECK_ERR(err, "deflate"); |
| 346 | |
| 347 | err = deflate(&c_stream, Z_FINISH); |
| 348 | if (err != Z_STREAM_END) { |
| 349 | fprintf(stderr, "deflate should report Z_STREAM_END\n"); |
| 350 | exit(1); |
| 351 | } |
| 352 | err = deflateEnd(&c_stream); |
| 353 | CHECK_ERR(err, "deflateEnd"); |
| 354 | } |
| 355 | |
| 356 | /* =========================================================================== |
| 357 | * Test inflate() with large buffers |
| 358 | */ |
| 359 | void test_large_inflate(compr, comprLen, uncompr, uncomprLen) |
| 360 | Byte *compr, *uncompr; |
| 361 | uLong comprLen, uncomprLen; |
| 362 | { |
| 363 | int err; |
| 364 | z_stream d_stream; /* decompression stream */ |
| 365 | |
| 366 | strcpy((char*)uncompr, "garbage"); |
| 367 | |
| 368 | d_stream.zalloc = zalloc; |
| 369 | d_stream.zfree = zfree; |
| 370 | d_stream.opaque = (voidpf)0; |
| 371 | |
| 372 | d_stream.next_in = compr; |
| 373 | d_stream.avail_in = (uInt)comprLen; |
| 374 | |
| 375 | err = inflateInit(&d_stream); |
| 376 | CHECK_ERR(err, "inflateInit"); |
| 377 | |
| 378 | for (;;) { |
| 379 | d_stream.next_out = uncompr; /* discard the output */ |
| 380 | d_stream.avail_out = (uInt)uncomprLen; |
| 381 | err = inflate(&d_stream, Z_NO_FLUSH); |
| 382 | if (err == Z_STREAM_END) break; |
| 383 | CHECK_ERR(err, "large inflate"); |
| 384 | } |
| 385 | |
| 386 | err = inflateEnd(&d_stream); |
| 387 | CHECK_ERR(err, "inflateEnd"); |
| 388 | |
| 389 | if (d_stream.total_out != 2*uncomprLen + comprLen/2) { |
| 390 | fprintf(stderr, "bad large inflate: %ld\n", d_stream.total_out); |
| 391 | exit(1); |
| 392 | } else { |
| 393 | printf("large_inflate(): OK\n"); |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | /* =========================================================================== |
| 398 | * Test deflate() with full flush |
| 399 | */ |
| 400 | void test_flush(compr, comprLen) |
| 401 | Byte *compr; |
| 402 | uLong *comprLen; |
| 403 | { |
| 404 | z_stream c_stream; /* compression stream */ |
| 405 | int err; |
| 406 | uInt len = (uInt)strlen(hello)+1; |
| 407 | |
| 408 | c_stream.zalloc = zalloc; |
| 409 | c_stream.zfree = zfree; |
| 410 | c_stream.opaque = (voidpf)0; |
| 411 | |
| 412 | err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); |
| 413 | CHECK_ERR(err, "deflateInit"); |
| 414 | |
| 415 | c_stream.next_in = (z_const unsigned char *)hello; |
| 416 | c_stream.next_out = compr; |
| 417 | c_stream.avail_in = 3; |
| 418 | c_stream.avail_out = (uInt)*comprLen; |
| 419 | err = deflate(&c_stream, Z_FULL_FLUSH); |
| 420 | CHECK_ERR(err, "deflate"); |
| 421 | |
| 422 | compr[3]++; /* force an error in first compressed block */ |
| 423 | c_stream.avail_in = len - 3; |
| 424 | |
| 425 | err = deflate(&c_stream, Z_FINISH); |
| 426 | if (err != Z_STREAM_END) { |
| 427 | CHECK_ERR(err, "deflate"); |
| 428 | } |
| 429 | err = deflateEnd(&c_stream); |
| 430 | CHECK_ERR(err, "deflateEnd"); |
| 431 | |
| 432 | *comprLen = c_stream.total_out; |
| 433 | } |
| 434 | |
| 435 | /* =========================================================================== |
| 436 | * Test inflateSync() |
| 437 | */ |
| 438 | void test_sync(compr, comprLen, uncompr, uncomprLen) |
| 439 | Byte *compr, *uncompr; |
| 440 | uLong comprLen, uncomprLen; |
| 441 | { |
| 442 | int err; |
| 443 | z_stream d_stream; /* decompression stream */ |
| 444 | |
| 445 | strcpy((char*)uncompr, "garbage"); |
| 446 | |
| 447 | d_stream.zalloc = zalloc; |
| 448 | d_stream.zfree = zfree; |
| 449 | d_stream.opaque = (voidpf)0; |
| 450 | |
| 451 | d_stream.next_in = compr; |
| 452 | d_stream.avail_in = 2; /* just read the zlib header */ |
| 453 | |
| 454 | err = inflateInit(&d_stream); |
| 455 | CHECK_ERR(err, "inflateInit"); |
| 456 | |
| 457 | d_stream.next_out = uncompr; |
| 458 | d_stream.avail_out = (uInt)uncomprLen; |
| 459 | |
| 460 | inflate(&d_stream, Z_NO_FLUSH); |
| 461 | CHECK_ERR(err, "inflate"); |
| 462 | |
| 463 | d_stream.avail_in = (uInt)comprLen-2; /* read all compressed data */ |
| 464 | err = inflateSync(&d_stream); /* but skip the damaged part */ |
| 465 | CHECK_ERR(err, "inflateSync"); |
| 466 | |
| 467 | err = inflate(&d_stream, Z_FINISH); |
| 468 | if (err != Z_DATA_ERROR) { |
| 469 | fprintf(stderr, "inflate should report DATA_ERROR\n"); |
| 470 | /* Because of incorrect adler32 */ |
| 471 | exit(1); |
| 472 | } |
| 473 | err = inflateEnd(&d_stream); |
| 474 | CHECK_ERR(err, "inflateEnd"); |
| 475 | |
| 476 | printf("after inflateSync(): hel%s\n", (char *)uncompr); |
| 477 | } |
| 478 | |
| 479 | /* =========================================================================== |
| 480 | * Test deflate() with preset dictionary |
| 481 | */ |
| 482 | void test_dict_deflate(compr, comprLen) |
| 483 | Byte *compr; |
| 484 | uLong comprLen; |
| 485 | { |
| 486 | z_stream c_stream; /* compression stream */ |
| 487 | int err; |
| 488 | |
| 489 | c_stream.zalloc = zalloc; |
| 490 | c_stream.zfree = zfree; |
| 491 | c_stream.opaque = (voidpf)0; |
| 492 | |
| 493 | err = deflateInit(&c_stream, Z_BEST_COMPRESSION); |
| 494 | CHECK_ERR(err, "deflateInit"); |
| 495 | |
| 496 | err = deflateSetDictionary(&c_stream, |
| 497 | (const Bytef*)dictionary, (int)sizeof(dictionary)); |
| 498 | CHECK_ERR(err, "deflateSetDictionary"); |
| 499 | |
| 500 | dictId = c_stream.adler; |
| 501 | c_stream.next_out = compr; |
| 502 | c_stream.avail_out = (uInt)comprLen; |
| 503 | |
| 504 | c_stream.next_in = (z_const unsigned char *)hello; |
| 505 | c_stream.avail_in = (uInt)strlen(hello)+1; |
| 506 | |
| 507 | err = deflate(&c_stream, Z_FINISH); |
| 508 | if (err != Z_STREAM_END) { |
| 509 | fprintf(stderr, "deflate should report Z_STREAM_END\n"); |
| 510 | exit(1); |
| 511 | } |
| 512 | err = deflateEnd(&c_stream); |
| 513 | CHECK_ERR(err, "deflateEnd"); |
| 514 | } |
| 515 | |
| 516 | /* =========================================================================== |
| 517 | * Test inflate() with a preset dictionary |
| 518 | */ |
| 519 | void test_dict_inflate(compr, comprLen, uncompr, uncomprLen) |
| 520 | Byte *compr, *uncompr; |
| 521 | uLong comprLen, uncomprLen; |
| 522 | { |
| 523 | int err; |
| 524 | z_stream d_stream; /* decompression stream */ |
| 525 | |
| 526 | strcpy((char*)uncompr, "garbage"); |
| 527 | |
| 528 | d_stream.zalloc = zalloc; |
| 529 | d_stream.zfree = zfree; |
| 530 | d_stream.opaque = (voidpf)0; |
| 531 | |
| 532 | d_stream.next_in = compr; |
| 533 | d_stream.avail_in = (uInt)comprLen; |
| 534 | |
| 535 | err = inflateInit(&d_stream); |
| 536 | CHECK_ERR(err, "inflateInit"); |
| 537 | |
| 538 | d_stream.next_out = uncompr; |
| 539 | d_stream.avail_out = (uInt)uncomprLen; |
| 540 | |
| 541 | for (;;) { |
| 542 | err = inflate(&d_stream, Z_NO_FLUSH); |
| 543 | if (err == Z_STREAM_END) break; |
| 544 | if (err == Z_NEED_DICT) { |
| 545 | if (d_stream.adler != dictId) { |
| 546 | fprintf(stderr, "unexpected dictionary"); |
| 547 | exit(1); |
| 548 | } |
| 549 | err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary, |
| 550 | (int)sizeof(dictionary)); |
| 551 | } |
| 552 | CHECK_ERR(err, "inflate with dict"); |
| 553 | } |
| 554 | |
| 555 | err = inflateEnd(&d_stream); |
| 556 | CHECK_ERR(err, "inflateEnd"); |
| 557 | |
| 558 | if (strcmp((char*)uncompr, hello)) { |
| 559 | fprintf(stderr, "bad inflate with dict\n"); |
| 560 | exit(1); |
| 561 | } else { |
| 562 | printf("inflate with dictionary: %s\n", (char *)uncompr); |
| 563 | } |
| 564 | } |
| 565 | |
| 566 | /* =========================================================================== |
| 567 | * Usage: example [output.gz [input.gz]] |
| 568 | */ |
| 569 | |
| 570 | int main(argc, argv) |
| 571 | int argc; |
| 572 | char *argv[]; |
| 573 | { |
| 574 | Byte *compr, *uncompr; |
| 575 | uLong comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */ |
| 576 | uLong uncomprLen = comprLen; |
| 577 | static const char* myVersion = ZLIB_VERSION; |
| 578 | |
| 579 | if (zlibVersion()[0] != myVersion[0]) { |
| 580 | fprintf(stderr, "incompatible zlib version\n"); |
| 581 | exit(1); |
| 582 | |
| 583 | } else if (strcmp(zlibVersion(), ZLIB_VERSION) != 0) { |
| 584 | fprintf(stderr, "warning: different zlib version\n"); |
| 585 | } |
| 586 | |
| 587 | printf("zlib version %s = 0x%04x, compile flags = 0x%lx\n", |
| 588 | ZLIB_VERSION, ZLIB_VERNUM, zlibCompileFlags()); |
| 589 | if (ZWRAP_isUsingZSTDcompression()) printf("zstd version %s\n", zstdVersion()); |
| 590 | |
| 591 | compr = (Byte*)calloc((uInt)comprLen, 1); |
| 592 | uncompr = (Byte*)calloc((uInt)uncomprLen, 1); |
| 593 | /* compr and uncompr are cleared to avoid reading uninitialized |
| 594 | * data and to ensure that uncompr compresses well. |
| 595 | */ |
| 596 | if (compr == Z_NULL || uncompr == Z_NULL) { |
| 597 | printf("out of memory\n"); |
| 598 | exit(1); |
| 599 | } |
| 600 | |
| 601 | #ifdef Z_SOLO |
| 602 | argc = strlen(argv[0]); |
| 603 | #else |
| 604 | test_compress(compr, comprLen, uncompr, uncomprLen); |
| 605 | |
| 606 | test_gzio((argc > 1 ? argv[1] : TESTFILE), |
| 607 | uncompr, uncomprLen); |
| 608 | #endif |
| 609 | |
| 610 | test_deflate(compr, comprLen); |
| 611 | test_inflate(compr, comprLen, uncompr, uncomprLen); |
| 612 | |
| 613 | test_large_deflate(compr, comprLen, uncompr, uncomprLen); |
| 614 | test_large_inflate(compr, comprLen, uncompr, uncomprLen); |
| 615 | |
| 616 | if (!ZWRAP_isUsingZSTDcompression()) { |
| 617 | test_flush(compr, &comprLen); |
| 618 | test_sync(compr, comprLen, uncompr, uncomprLen); |
| 619 | } |
| 620 | comprLen = uncomprLen; |
| 621 | |
| 622 | test_dict_deflate(compr, comprLen); |
| 623 | test_dict_inflate(compr, comprLen, uncompr, uncomprLen); |
| 624 | |
| 625 | free(compr); |
| 626 | free(uncompr); |
| 627 | |
| 628 | return 0; |
| 629 | } |