J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 3 | * |
| 4 | * This code is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License version 2 only, as |
| 6 | * published by the Free Software Foundation. Sun designates this |
| 7 | * particular file as subject to the "Classpath" exception as provided |
| 8 | * by Sun in the LICENSE file that accompanied this code. |
| 9 | * |
| 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 13 | * version 2 for more details (a copy is included in the LICENSE file that |
| 14 | * accompanied this code). |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License version |
| 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 21 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 22 | * have any questions. |
| 23 | */ |
| 24 | |
| 25 | /* |
| 26 | * This file is available under and governed by the GNU General Public |
| 27 | * License version 2 only, as published by the Free Software Foundation. |
| 28 | * However, the following notice accompanied the original version of this |
| 29 | * file and, per its terms, should not be removed: |
| 30 | * |
| 31 | * example.c -- usage example of the zlib compression library |
| 32 | * Copyright (C) 1995-1998 Jean-loup Gailly. |
| 33 | * For conditions of distribution and use, see copyright notice in zlib.h |
| 34 | */ |
| 35 | |
| 36 | #include <stdio.h> |
| 37 | #include "zlib.h" |
| 38 | |
| 39 | #ifdef STDC |
| 40 | # include <string.h> |
| 41 | # include <stdlib.h> |
| 42 | #else |
| 43 | extern void exit OF((int)); |
| 44 | #endif |
| 45 | |
| 46 | #if defined(VMS) || defined(RISCOS) |
| 47 | # define TESTFILE "foo-gz" |
| 48 | #else |
| 49 | # define TESTFILE "foo.gz" |
| 50 | #endif |
| 51 | |
| 52 | #define CHECK_ERR(err, msg) { \ |
| 53 | if (err != Z_OK) { \ |
| 54 | fprintf(stderr, "%s error: %d\n", msg, err); \ |
| 55 | exit(1); \ |
| 56 | } \ |
| 57 | } |
| 58 | |
| 59 | const char hello[] = "hello, hello!"; |
| 60 | /* "hello world" would be more standard, but the repeated "hello" |
| 61 | * stresses the compression code better, sorry... |
| 62 | */ |
| 63 | |
| 64 | const char dictionary[] = "hello"; |
| 65 | uLong dictId; /* Adler32 value of the dictionary */ |
| 66 | |
| 67 | void test_compress OF((Byte *compr, uLong comprLen, |
| 68 | Byte *uncompr, uLong uncomprLen)); |
| 69 | void test_gzio OF((const char *out, const char *in, |
| 70 | Byte *uncompr, int uncomprLen)); |
| 71 | void test_deflate OF((Byte *compr, uLong comprLen)); |
| 72 | void test_inflate OF((Byte *compr, uLong comprLen, |
| 73 | Byte *uncompr, uLong uncomprLen)); |
| 74 | void test_large_deflate OF((Byte *compr, uLong comprLen, |
| 75 | Byte *uncompr, uLong uncomprLen)); |
| 76 | void test_large_inflate OF((Byte *compr, uLong comprLen, |
| 77 | Byte *uncompr, uLong uncomprLen)); |
| 78 | void test_flush OF((Byte *compr, uLong *comprLen)); |
| 79 | void test_sync OF((Byte *compr, uLong comprLen, |
| 80 | Byte *uncompr, uLong uncomprLen)); |
| 81 | void test_dict_deflate OF((Byte *compr, uLong comprLen)); |
| 82 | void test_dict_inflate OF((Byte *compr, uLong comprLen, |
| 83 | Byte *uncompr, uLong uncomprLen)); |
| 84 | int main OF((int argc, char *argv[])); |
| 85 | |
| 86 | /* =========================================================================== |
| 87 | * Test compress() and uncompress() |
| 88 | */ |
| 89 | void test_compress(compr, comprLen, uncompr, uncomprLen) |
| 90 | Byte *compr, *uncompr; |
| 91 | uLong comprLen, uncomprLen; |
| 92 | { |
| 93 | int err; |
| 94 | uLong len = strlen(hello)+1; |
| 95 | |
| 96 | err = compress(compr, &comprLen, (const Bytef*)hello, len); |
| 97 | CHECK_ERR(err, "compress"); |
| 98 | |
| 99 | strcpy((char*)uncompr, "garbage"); |
| 100 | |
| 101 | err = uncompress(uncompr, &uncomprLen, compr, comprLen); |
| 102 | CHECK_ERR(err, "uncompress"); |
| 103 | |
| 104 | if (strcmp((char*)uncompr, hello)) { |
| 105 | fprintf(stderr, "bad uncompress\n"); |
| 106 | exit(1); |
| 107 | } else { |
| 108 | printf("uncompress(): %s\n", (char *)uncompr); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | /* =========================================================================== |
| 113 | * Test read/write of .gz files |
| 114 | */ |
| 115 | void test_gzio(out, in, uncompr, uncomprLen) |
| 116 | const char *out; /* compressed output file */ |
| 117 | const char *in; /* compressed input file */ |
| 118 | Byte *uncompr; |
| 119 | int uncomprLen; |
| 120 | { |
| 121 | int err; |
| 122 | int len = strlen(hello)+1; |
| 123 | gzFile file; |
| 124 | z_off_t pos; |
| 125 | |
| 126 | file = gzopen(out, "wb"); |
| 127 | if (file == NULL) { |
| 128 | fprintf(stderr, "gzopen error\n"); |
| 129 | exit(1); |
| 130 | } |
| 131 | gzputc(file, 'h'); |
| 132 | if (gzputs(file, "ello") != 4) { |
| 133 | fprintf(stderr, "gzputs err: %s\n", gzerror(file, &err)); |
| 134 | exit(1); |
| 135 | } |
| 136 | if (gzprintf(file, ", %s!", "hello") != 8) { |
| 137 | fprintf(stderr, "gzprintf err: %s\n", gzerror(file, &err)); |
| 138 | exit(1); |
| 139 | } |
| 140 | gzseek(file, 1L, SEEK_CUR); /* add one zero byte */ |
| 141 | gzclose(file); |
| 142 | |
| 143 | file = gzopen(in, "rb"); |
| 144 | if (file == NULL) { |
| 145 | fprintf(stderr, "gzopen error\n"); |
| 146 | } |
| 147 | strcpy((char*)uncompr, "garbage"); |
| 148 | |
| 149 | uncomprLen = gzread(file, uncompr, (unsigned)uncomprLen); |
| 150 | if (uncomprLen != len) { |
| 151 | fprintf(stderr, "gzread err: %s\n", gzerror(file, &err)); |
| 152 | exit(1); |
| 153 | } |
| 154 | if (strcmp((char*)uncompr, hello)) { |
| 155 | fprintf(stderr, "bad gzread: %s\n", (char*)uncompr); |
| 156 | exit(1); |
| 157 | } else { |
| 158 | printf("gzread(): %s\n", (char *)uncompr); |
| 159 | } |
| 160 | |
| 161 | pos = gzseek(file, -8L, SEEK_CUR); |
| 162 | if (pos != 6 || gztell(file) != pos) { |
| 163 | fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n", |
| 164 | (long)pos, (long)gztell(file)); |
| 165 | exit(1); |
| 166 | } |
| 167 | |
| 168 | if (gzgetc(file) != ' ') { |
| 169 | fprintf(stderr, "gzgetc error\n"); |
| 170 | exit(1); |
| 171 | } |
| 172 | |
| 173 | gzgets(file, (char*)uncompr, uncomprLen); |
| 174 | uncomprLen = strlen((char*)uncompr); |
| 175 | if (uncomprLen != 6) { /* "hello!" */ |
| 176 | fprintf(stderr, "gzgets err after gzseek: %s\n", gzerror(file, &err)); |
| 177 | exit(1); |
| 178 | } |
| 179 | if (strcmp((char*)uncompr, hello+7)) { |
| 180 | fprintf(stderr, "bad gzgets after gzseek\n"); |
| 181 | exit(1); |
| 182 | } else { |
| 183 | printf("gzgets() after gzseek: %s\n", (char *)uncompr); |
| 184 | } |
| 185 | |
| 186 | gzclose(file); |
| 187 | } |
| 188 | |
| 189 | /* =========================================================================== |
| 190 | * Test deflate() with small buffers |
| 191 | */ |
| 192 | void test_deflate(compr, comprLen) |
| 193 | Byte *compr; |
| 194 | uLong comprLen; |
| 195 | { |
| 196 | z_stream c_stream; /* compression stream */ |
| 197 | int err; |
| 198 | int len = strlen(hello)+1; |
| 199 | |
| 200 | c_stream.zalloc = (alloc_func)0; |
| 201 | c_stream.zfree = (free_func)0; |
| 202 | c_stream.opaque = (voidpf)0; |
| 203 | |
| 204 | err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); |
| 205 | CHECK_ERR(err, "deflateInit"); |
| 206 | |
| 207 | c_stream.next_in = (Bytef*)hello; |
| 208 | c_stream.next_out = compr; |
| 209 | |
| 210 | while (c_stream.total_in != (uLong)len && c_stream.total_out < comprLen) { |
| 211 | c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ |
| 212 | err = deflate(&c_stream, Z_NO_FLUSH); |
| 213 | CHECK_ERR(err, "deflate"); |
| 214 | } |
| 215 | /* Finish the stream, still forcing small buffers: */ |
| 216 | for (;;) { |
| 217 | c_stream.avail_out = 1; |
| 218 | err = deflate(&c_stream, Z_FINISH); |
| 219 | if (err == Z_STREAM_END) break; |
| 220 | CHECK_ERR(err, "deflate"); |
| 221 | } |
| 222 | |
| 223 | err = deflateEnd(&c_stream); |
| 224 | CHECK_ERR(err, "deflateEnd"); |
| 225 | } |
| 226 | |
| 227 | /* =========================================================================== |
| 228 | * Test inflate() with small buffers |
| 229 | */ |
| 230 | void test_inflate(compr, comprLen, uncompr, uncomprLen) |
| 231 | Byte *compr, *uncompr; |
| 232 | uLong comprLen, uncomprLen; |
| 233 | { |
| 234 | int err; |
| 235 | z_stream d_stream; /* decompression stream */ |
| 236 | |
| 237 | strcpy((char*)uncompr, "garbage"); |
| 238 | |
| 239 | d_stream.zalloc = (alloc_func)0; |
| 240 | d_stream.zfree = (free_func)0; |
| 241 | d_stream.opaque = (voidpf)0; |
| 242 | |
| 243 | d_stream.next_in = compr; |
| 244 | d_stream.avail_in = 0; |
| 245 | d_stream.next_out = uncompr; |
| 246 | |
| 247 | err = inflateInit(&d_stream); |
| 248 | CHECK_ERR(err, "inflateInit"); |
| 249 | |
| 250 | while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) { |
| 251 | d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */ |
| 252 | err = inflate(&d_stream, Z_NO_FLUSH); |
| 253 | if (err == Z_STREAM_END) break; |
| 254 | CHECK_ERR(err, "inflate"); |
| 255 | } |
| 256 | |
| 257 | err = inflateEnd(&d_stream); |
| 258 | CHECK_ERR(err, "inflateEnd"); |
| 259 | |
| 260 | if (strcmp((char*)uncompr, hello)) { |
| 261 | fprintf(stderr, "bad inflate\n"); |
| 262 | exit(1); |
| 263 | } else { |
| 264 | printf("inflate(): %s\n", (char *)uncompr); |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | /* =========================================================================== |
| 269 | * Test deflate() with large buffers and dynamic change of compression level |
| 270 | */ |
| 271 | void test_large_deflate(compr, comprLen, uncompr, uncomprLen) |
| 272 | Byte *compr, *uncompr; |
| 273 | uLong comprLen, uncomprLen; |
| 274 | { |
| 275 | z_stream c_stream; /* compression stream */ |
| 276 | int err; |
| 277 | |
| 278 | c_stream.zalloc = (alloc_func)0; |
| 279 | c_stream.zfree = (free_func)0; |
| 280 | c_stream.opaque = (voidpf)0; |
| 281 | |
| 282 | err = deflateInit(&c_stream, Z_BEST_SPEED); |
| 283 | CHECK_ERR(err, "deflateInit"); |
| 284 | |
| 285 | c_stream.next_out = compr; |
| 286 | c_stream.avail_out = (uInt)comprLen; |
| 287 | |
| 288 | /* At this point, uncompr is still mostly zeroes, so it should compress |
| 289 | * very well: |
| 290 | */ |
| 291 | c_stream.next_in = uncompr; |
| 292 | c_stream.avail_in = (uInt)uncomprLen; |
| 293 | err = deflate(&c_stream, Z_NO_FLUSH); |
| 294 | CHECK_ERR(err, "deflate"); |
| 295 | if (c_stream.avail_in != 0) { |
| 296 | fprintf(stderr, "deflate not greedy\n"); |
| 297 | exit(1); |
| 298 | } |
| 299 | |
| 300 | /* Feed in already compressed data and switch to no compression: */ |
| 301 | deflateParams(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY); |
| 302 | c_stream.next_in = compr; |
| 303 | c_stream.avail_in = (uInt)comprLen/2; |
| 304 | err = deflate(&c_stream, Z_NO_FLUSH); |
| 305 | CHECK_ERR(err, "deflate"); |
| 306 | |
| 307 | /* Switch back to compressing mode: */ |
| 308 | deflateParams(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED); |
| 309 | c_stream.next_in = uncompr; |
| 310 | c_stream.avail_in = (uInt)uncomprLen; |
| 311 | err = deflate(&c_stream, Z_NO_FLUSH); |
| 312 | CHECK_ERR(err, "deflate"); |
| 313 | |
| 314 | err = deflate(&c_stream, Z_FINISH); |
| 315 | if (err != Z_STREAM_END) { |
| 316 | fprintf(stderr, "deflate should report Z_STREAM_END\n"); |
| 317 | exit(1); |
| 318 | } |
| 319 | err = deflateEnd(&c_stream); |
| 320 | CHECK_ERR(err, "deflateEnd"); |
| 321 | } |
| 322 | |
| 323 | /* =========================================================================== |
| 324 | * Test inflate() with large buffers |
| 325 | */ |
| 326 | void test_large_inflate(compr, comprLen, uncompr, uncomprLen) |
| 327 | Byte *compr, *uncompr; |
| 328 | uLong comprLen, uncomprLen; |
| 329 | { |
| 330 | int err; |
| 331 | z_stream d_stream; /* decompression stream */ |
| 332 | |
| 333 | strcpy((char*)uncompr, "garbage"); |
| 334 | |
| 335 | d_stream.zalloc = (alloc_func)0; |
| 336 | d_stream.zfree = (free_func)0; |
| 337 | d_stream.opaque = (voidpf)0; |
| 338 | |
| 339 | d_stream.next_in = compr; |
| 340 | d_stream.avail_in = (uInt)comprLen; |
| 341 | |
| 342 | err = inflateInit(&d_stream); |
| 343 | CHECK_ERR(err, "inflateInit"); |
| 344 | |
| 345 | for (;;) { |
| 346 | d_stream.next_out = uncompr; /* discard the output */ |
| 347 | d_stream.avail_out = (uInt)uncomprLen; |
| 348 | err = inflate(&d_stream, Z_NO_FLUSH); |
| 349 | if (err == Z_STREAM_END) break; |
| 350 | CHECK_ERR(err, "large inflate"); |
| 351 | } |
| 352 | |
| 353 | err = inflateEnd(&d_stream); |
| 354 | CHECK_ERR(err, "inflateEnd"); |
| 355 | |
| 356 | if (d_stream.total_out != 2*uncomprLen + comprLen/2) { |
| 357 | fprintf(stderr, "bad large inflate: %ld\n", d_stream.total_out); |
| 358 | exit(1); |
| 359 | } else { |
| 360 | printf("large_inflate(): OK\n"); |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | /* =========================================================================== |
| 365 | * Test deflate() with full flush |
| 366 | */ |
| 367 | void test_flush(compr, comprLen) |
| 368 | Byte *compr; |
| 369 | uLong *comprLen; |
| 370 | { |
| 371 | z_stream c_stream; /* compression stream */ |
| 372 | int err; |
| 373 | int len = strlen(hello)+1; |
| 374 | |
| 375 | c_stream.zalloc = (alloc_func)0; |
| 376 | c_stream.zfree = (free_func)0; |
| 377 | c_stream.opaque = (voidpf)0; |
| 378 | |
| 379 | err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); |
| 380 | CHECK_ERR(err, "deflateInit"); |
| 381 | |
| 382 | c_stream.next_in = (Bytef*)hello; |
| 383 | c_stream.next_out = compr; |
| 384 | c_stream.avail_in = 3; |
| 385 | c_stream.avail_out = (uInt)*comprLen; |
| 386 | err = deflate(&c_stream, Z_FULL_FLUSH); |
| 387 | CHECK_ERR(err, "deflate"); |
| 388 | |
| 389 | compr[3]++; /* force an error in first compressed block */ |
| 390 | c_stream.avail_in = len - 3; |
| 391 | |
| 392 | err = deflate(&c_stream, Z_FINISH); |
| 393 | if (err != Z_STREAM_END) { |
| 394 | CHECK_ERR(err, "deflate"); |
| 395 | } |
| 396 | err = deflateEnd(&c_stream); |
| 397 | CHECK_ERR(err, "deflateEnd"); |
| 398 | |
| 399 | *comprLen = c_stream.total_out; |
| 400 | } |
| 401 | |
| 402 | /* =========================================================================== |
| 403 | * Test inflateSync() |
| 404 | */ |
| 405 | void test_sync(compr, comprLen, uncompr, uncomprLen) |
| 406 | Byte *compr, *uncompr; |
| 407 | uLong comprLen, uncomprLen; |
| 408 | { |
| 409 | int err; |
| 410 | z_stream d_stream; /* decompression stream */ |
| 411 | |
| 412 | strcpy((char*)uncompr, "garbage"); |
| 413 | |
| 414 | d_stream.zalloc = (alloc_func)0; |
| 415 | d_stream.zfree = (free_func)0; |
| 416 | d_stream.opaque = (voidpf)0; |
| 417 | |
| 418 | d_stream.next_in = compr; |
| 419 | d_stream.avail_in = 2; /* just read the zlib header */ |
| 420 | |
| 421 | err = inflateInit(&d_stream); |
| 422 | CHECK_ERR(err, "inflateInit"); |
| 423 | |
| 424 | d_stream.next_out = uncompr; |
| 425 | d_stream.avail_out = (uInt)uncomprLen; |
| 426 | |
| 427 | inflate(&d_stream, Z_NO_FLUSH); |
| 428 | CHECK_ERR(err, "inflate"); |
| 429 | |
| 430 | d_stream.avail_in = (uInt)comprLen-2; /* read all compressed data */ |
| 431 | err = inflateSync(&d_stream); /* but skip the damaged part */ |
| 432 | CHECK_ERR(err, "inflateSync"); |
| 433 | |
| 434 | err = inflate(&d_stream, Z_FINISH); |
| 435 | if (err != Z_DATA_ERROR) { |
| 436 | fprintf(stderr, "inflate should report DATA_ERROR\n"); |
| 437 | /* Because of incorrect adler32 */ |
| 438 | exit(1); |
| 439 | } |
| 440 | err = inflateEnd(&d_stream); |
| 441 | CHECK_ERR(err, "inflateEnd"); |
| 442 | |
| 443 | printf("after inflateSync(): hel%s\n", (char *)uncompr); |
| 444 | } |
| 445 | |
| 446 | /* =========================================================================== |
| 447 | * Test deflate() with preset dictionary |
| 448 | */ |
| 449 | void test_dict_deflate(compr, comprLen) |
| 450 | Byte *compr; |
| 451 | uLong comprLen; |
| 452 | { |
| 453 | z_stream c_stream; /* compression stream */ |
| 454 | int err; |
| 455 | |
| 456 | c_stream.zalloc = (alloc_func)0; |
| 457 | c_stream.zfree = (free_func)0; |
| 458 | c_stream.opaque = (voidpf)0; |
| 459 | |
| 460 | err = deflateInit(&c_stream, Z_BEST_COMPRESSION); |
| 461 | CHECK_ERR(err, "deflateInit"); |
| 462 | |
| 463 | err = deflateSetDictionary(&c_stream, |
| 464 | (const Bytef*)dictionary, sizeof(dictionary)); |
| 465 | CHECK_ERR(err, "deflateSetDictionary"); |
| 466 | |
| 467 | dictId = c_stream.adler; |
| 468 | c_stream.next_out = compr; |
| 469 | c_stream.avail_out = (uInt)comprLen; |
| 470 | |
| 471 | c_stream.next_in = (Bytef*)hello; |
| 472 | c_stream.avail_in = (uInt)strlen(hello)+1; |
| 473 | |
| 474 | err = deflate(&c_stream, Z_FINISH); |
| 475 | if (err != Z_STREAM_END) { |
| 476 | fprintf(stderr, "deflate should report Z_STREAM_END\n"); |
| 477 | exit(1); |
| 478 | } |
| 479 | err = deflateEnd(&c_stream); |
| 480 | CHECK_ERR(err, "deflateEnd"); |
| 481 | } |
| 482 | |
| 483 | /* =========================================================================== |
| 484 | * Test inflate() with a preset dictionary |
| 485 | */ |
| 486 | void test_dict_inflate(compr, comprLen, uncompr, uncomprLen) |
| 487 | Byte *compr, *uncompr; |
| 488 | uLong comprLen, uncomprLen; |
| 489 | { |
| 490 | int err; |
| 491 | z_stream d_stream; /* decompression stream */ |
| 492 | |
| 493 | strcpy((char*)uncompr, "garbage"); |
| 494 | |
| 495 | d_stream.zalloc = (alloc_func)0; |
| 496 | d_stream.zfree = (free_func)0; |
| 497 | d_stream.opaque = (voidpf)0; |
| 498 | |
| 499 | d_stream.next_in = compr; |
| 500 | d_stream.avail_in = (uInt)comprLen; |
| 501 | |
| 502 | err = inflateInit(&d_stream); |
| 503 | CHECK_ERR(err, "inflateInit"); |
| 504 | |
| 505 | d_stream.next_out = uncompr; |
| 506 | d_stream.avail_out = (uInt)uncomprLen; |
| 507 | |
| 508 | for (;;) { |
| 509 | err = inflate(&d_stream, Z_NO_FLUSH); |
| 510 | if (err == Z_STREAM_END) break; |
| 511 | if (err == Z_NEED_DICT) { |
| 512 | if (d_stream.adler != dictId) { |
| 513 | fprintf(stderr, "unexpected dictionary"); |
| 514 | exit(1); |
| 515 | } |
| 516 | err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary, |
| 517 | sizeof(dictionary)); |
| 518 | } |
| 519 | CHECK_ERR(err, "inflate with dict"); |
| 520 | } |
| 521 | |
| 522 | err = inflateEnd(&d_stream); |
| 523 | CHECK_ERR(err, "inflateEnd"); |
| 524 | |
| 525 | if (strcmp((char*)uncompr, hello)) { |
| 526 | fprintf(stderr, "bad inflate with dict\n"); |
| 527 | exit(1); |
| 528 | } else { |
| 529 | printf("inflate with dictionary: %s\n", (char *)uncompr); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | /* =========================================================================== |
| 534 | * Usage: example [output.gz [input.gz]] |
| 535 | */ |
| 536 | |
| 537 | int main(argc, argv) |
| 538 | int argc; |
| 539 | char *argv[]; |
| 540 | { |
| 541 | Byte *compr, *uncompr; |
| 542 | uLong comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */ |
| 543 | uLong uncomprLen = comprLen; |
| 544 | static const char* myVersion = ZLIB_VERSION; |
| 545 | |
| 546 | if (zlibVersion()[0] != myVersion[0]) { |
| 547 | fprintf(stderr, "incompatible zlib version\n"); |
| 548 | exit(1); |
| 549 | |
| 550 | } else if (strcmp(zlibVersion(), ZLIB_VERSION) != 0) { |
| 551 | fprintf(stderr, "warning: different zlib version\n"); |
| 552 | } |
| 553 | |
| 554 | compr = (Byte*)calloc((uInt)comprLen, 1); |
| 555 | uncompr = (Byte*)calloc((uInt)uncomprLen, 1); |
| 556 | /* compr and uncompr are cleared to avoid reading uninitialized |
| 557 | * data and to ensure that uncompr compresses well. |
| 558 | */ |
| 559 | if (compr == Z_NULL || uncompr == Z_NULL) { |
| 560 | printf("out of memory\n"); |
| 561 | exit(1); |
| 562 | } |
| 563 | test_compress(compr, comprLen, uncompr, uncomprLen); |
| 564 | |
| 565 | test_gzio((argc > 1 ? argv[1] : TESTFILE), |
| 566 | (argc > 2 ? argv[2] : TESTFILE), |
| 567 | uncompr, (int)uncomprLen); |
| 568 | |
| 569 | test_deflate(compr, comprLen); |
| 570 | test_inflate(compr, comprLen, uncompr, uncomprLen); |
| 571 | |
| 572 | test_large_deflate(compr, comprLen, uncompr, uncomprLen); |
| 573 | test_large_inflate(compr, comprLen, uncompr, uncomprLen); |
| 574 | |
| 575 | test_flush(compr, &comprLen); |
| 576 | test_sync(compr, comprLen, uncompr, uncomprLen); |
| 577 | comprLen = uncomprLen; |
| 578 | |
| 579 | test_dict_deflate(compr, comprLen); |
| 580 | test_dict_inflate(compr, comprLen, uncompr, uncomprLen); |
| 581 | |
| 582 | exit(0); |
| 583 | return 0; /* to avoid warning */ |
| 584 | } |