| example.c (237691) | example.c (254069) |
|---|---|
| 1/* example.c -- usage example of the zlib compression library 2 * Copyright (C) 1995-2006, 2011 Jean-loup Gailly. 3 * For conditions of distribution and use, see copyright notice in zlib.h 4 */ 5 6/* @(#) $Id$ */ 7 8#include "zlib.h" --- 12 unchanged lines hidden (view full) --- 21 22#define CHECK_ERR(err, msg) { \ 23 if (err != Z_OK) { \ 24 fprintf(stderr, "%s error: %d\n", msg, err); \ 25 exit(1); \ 26 } \ 27} 28 | 1/* example.c -- usage example of the zlib compression library 2 * Copyright (C) 1995-2006, 2011 Jean-loup Gailly. 3 * For conditions of distribution and use, see copyright notice in zlib.h 4 */ 5 6/* @(#) $Id$ */ 7 8#include "zlib.h" --- 12 unchanged lines hidden (view full) --- 21 22#define CHECK_ERR(err, msg) { \ 23 if (err != Z_OK) { \ 24 fprintf(stderr, "%s error: %d\n", msg, err); \ 25 exit(1); \ 26 } \ 27} 28 |
| 29const char hello[] = "hello, hello!"; | 29z_const char hello[] = "hello, hello!"; |
| 30/* "hello world" would be more standard, but the repeated "hello" 31 * stresses the compression code better, sorry... 32 */ 33 34const char dictionary[] = "hello"; 35uLong dictId; /* Adler32 value of the dictionary */ 36 37void test_deflate OF((Byte *compr, uLong comprLen)); --- 169 unchanged lines hidden (view full) --- 207 208 c_stream.zalloc = zalloc; 209 c_stream.zfree = zfree; 210 c_stream.opaque = (voidpf)0; 211 212 err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); 213 CHECK_ERR(err, "deflateInit"); 214 | 30/* "hello world" would be more standard, but the repeated "hello" 31 * stresses the compression code better, sorry... 32 */ 33 34const char dictionary[] = "hello"; 35uLong dictId; /* Adler32 value of the dictionary */ 36 37void test_deflate OF((Byte *compr, uLong comprLen)); --- 169 unchanged lines hidden (view full) --- 207 208 c_stream.zalloc = zalloc; 209 c_stream.zfree = zfree; 210 c_stream.opaque = (voidpf)0; 211 212 err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); 213 CHECK_ERR(err, "deflateInit"); 214 |
| 215 c_stream.next_in = (Bytef*)hello; | 215 c_stream.next_in = (z_const unsigned char *)hello; |
| 216 c_stream.next_out = compr; 217 218 while (c_stream.total_in != len && c_stream.total_out < comprLen) { 219 c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ 220 err = deflate(&c_stream, Z_NO_FLUSH); 221 CHECK_ERR(err, "deflate"); 222 } 223 /* Finish the stream, still forcing small buffers: */ --- 158 unchanged lines hidden (view full) --- 382 383 c_stream.zalloc = zalloc; 384 c_stream.zfree = zfree; 385 c_stream.opaque = (voidpf)0; 386 387 err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); 388 CHECK_ERR(err, "deflateInit"); 389 | 216 c_stream.next_out = compr; 217 218 while (c_stream.total_in != len && c_stream.total_out < comprLen) { 219 c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ 220 err = deflate(&c_stream, Z_NO_FLUSH); 221 CHECK_ERR(err, "deflate"); 222 } 223 /* Finish the stream, still forcing small buffers: */ --- 158 unchanged lines hidden (view full) --- 382 383 c_stream.zalloc = zalloc; 384 c_stream.zfree = zfree; 385 c_stream.opaque = (voidpf)0; 386 387 err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); 388 CHECK_ERR(err, "deflateInit"); 389 |
| 390 c_stream.next_in = (Bytef*)hello; | 390 c_stream.next_in = (z_const unsigned char *)hello; |
| 391 c_stream.next_out = compr; 392 c_stream.avail_in = 3; 393 c_stream.avail_out = (uInt)*comprLen; 394 err = deflate(&c_stream, Z_FULL_FLUSH); 395 CHECK_ERR(err, "deflate"); 396 397 compr[3]++; /* force an error in first compressed block */ 398 c_stream.avail_in = len - 3; --- 72 unchanged lines hidden (view full) --- 471 err = deflateSetDictionary(&c_stream, 472 (const Bytef*)dictionary, (int)sizeof(dictionary)); 473 CHECK_ERR(err, "deflateSetDictionary"); 474 475 dictId = c_stream.adler; 476 c_stream.next_out = compr; 477 c_stream.avail_out = (uInt)comprLen; 478 | 391 c_stream.next_out = compr; 392 c_stream.avail_in = 3; 393 c_stream.avail_out = (uInt)*comprLen; 394 err = deflate(&c_stream, Z_FULL_FLUSH); 395 CHECK_ERR(err, "deflate"); 396 397 compr[3]++; /* force an error in first compressed block */ 398 c_stream.avail_in = len - 3; --- 72 unchanged lines hidden (view full) --- 471 err = deflateSetDictionary(&c_stream, 472 (const Bytef*)dictionary, (int)sizeof(dictionary)); 473 CHECK_ERR(err, "deflateSetDictionary"); 474 475 dictId = c_stream.adler; 476 c_stream.next_out = compr; 477 c_stream.avail_out = (uInt)comprLen; 478 |
| 479 c_stream.next_in = (Bytef*)hello; | 479 c_stream.next_in = (z_const unsigned char *)hello; |
| 480 c_stream.avail_in = (uInt)strlen(hello)+1; 481 482 err = deflate(&c_stream, Z_FINISH); 483 if (err != Z_STREAM_END) { 484 fprintf(stderr, "deflate should report Z_STREAM_END\n"); 485 exit(1); 486 } 487 err = deflateEnd(&c_stream); --- 114 unchanged lines hidden --- | 480 c_stream.avail_in = (uInt)strlen(hello)+1; 481 482 err = deflate(&c_stream, Z_FINISH); 483 if (err != Z_STREAM_END) { 484 fprintf(stderr, "deflate should report Z_STREAM_END\n"); 485 exit(1); 486 } 487 err = deflateEnd(&c_stream); --- 114 unchanged lines hidden --- |