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Diffstat (limited to 'neozip/test/example.c')
| -rw-r--r-- | neozip/test/example.c | 1002 |
1 files changed, 1002 insertions, 0 deletions
diff --git a/neozip/test/example.c b/neozip/test/example.c new file mode 100644 index 0000000000..fd62bd5d7f --- /dev/null +++ b/neozip/test/example.c @@ -0,0 +1,1002 @@ +/* example.c -- usage example of the zlib compression library + * Copyright (C) 1995-2006, 2011, 2016 Jean-loup Gailly + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#include "zbuild.h" +#ifdef ZLIB_COMPAT +# include "zlib.h" +#else +# include "zlib-ng.h" +#endif +#include "deflate.h" + +#include <stdio.h> +#include <stdarg.h> +#include <inttypes.h> + +#include "test_shared_ng.h" + +#define TESTFILE "foo.gz" + +static const char dictionary[] = "hello"; +static unsigned long dictId = 0; /* Adler32 value of the dictionary */ + +/* Maximum dictionary size, according to inflateGetDictionary() description. */ +#define MAX_DICTIONARY_SIZE 32768 + +static alloc_func zalloc = NULL; +static free_func zfree = NULL; + +/* =========================================================================== + * Display error message and exit + */ +void error(const char *format, ...) { + va_list va; + + va_start(va, format); + vfprintf(stderr, format, va); + va_end(va); + + exit(1); +} + +#define CHECK_ERR(err, msg) { \ + if (err != Z_OK) \ + error("%s error: %d\n", msg, err); \ +} + +/* =========================================================================== + * Test compress() and uncompress() + */ +static void test_compress(unsigned char *compr, z_uintmax_t comprLen, unsigned char *uncompr, z_uintmax_t uncomprLen) { + int err; + unsigned int len = (unsigned int)strlen(hello)+1; + + err = PREFIX(compress)(compr, &comprLen, (const unsigned char*)hello, len); + CHECK_ERR(err, "compress"); + + strcpy((char*)uncompr, "garbage"); + + err = PREFIX(uncompress)(uncompr, &uncomprLen, compr, comprLen); + CHECK_ERR(err, "uncompress"); + + if (strcmp((char*)uncompr, hello)) + error("bad uncompress\n"); + else + printf("uncompress(): %s\n", (char *)uncompr); +} + +/* =========================================================================== + * Test read/write of .gz files + */ +static void test_gzio(const char *fname, unsigned char *uncompr, z_size_t uncomprLen) { +#ifdef NO_GZCOMPRESS + fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n"); +#else + z_int32_t err; + size_t read; + size_t len = strlen(hello)+1; + gzFile file; + z_off64_t pos; + z_off64_t comprLen; + + /* Write gz file with test data */ + file = PREFIX(gzopen)(fname, "wb"); + if (file == NULL) + error("gzopen error\n"); + /* Write hello, hello! using gzputs and gzprintf */ + PREFIX(gzputc)(file, 'h'); + if (PREFIX(gzputs)(file, "ello") != 4) + error("gzputs err: %s\n", PREFIX(gzerror)(file, &err)); + if (PREFIX(gzprintf)(file, ", %s!", "hello") != 8) + error("gzprintf err: %s\n", PREFIX(gzerror)(file, &err)); + /* Write string null-teriminator using gzseek */ + if (PREFIX(gzseek)(file, 1L, SEEK_CUR) < 0) + error("gzseek error, gztell=%ld\n", (long)PREFIX(gztell)(file)); + /* Write hello, hello! using gzfwrite using best compression level */ + if (PREFIX(gzsetparams)(file, Z_BEST_COMPRESSION, Z_DEFAULT_STRATEGY) != Z_OK) + error("gzsetparams err: %s\n", PREFIX(gzerror)(file, &err)); + if (PREFIX(gzfwrite)(hello, len, 1, file) == 0) + error("gzfwrite err: %s\n", PREFIX(gzerror)(file, &err)); + /* Flush compressed bytes to file */ + if (PREFIX(gzflush)(file, Z_SYNC_FLUSH) != Z_OK) + error("gzflush err: %s\n", PREFIX(gzerror)(file, &err)); + comprLen = PREFIX(gzoffset)(file); + if (comprLen <= 0) + error("gzoffset err: %s\n", PREFIX(gzerror)(file, &err)); + PREFIX(gzclose)(file); + + /* Open gz file we previously wrote */ + file = PREFIX(gzopen)(fname, "rb"); + if (file == NULL) + error("gzopen error\n"); + + /* Read uncompressed data - hello, hello! string twice */ + strcpy((char*)uncompr, "garbages"); + if (PREFIX(gzread)(file, uncompr, (unsigned)uncomprLen) != (int)(len + len)) + error("gzread err: %s\n", PREFIX(gzerror)(file, &err)); + if (strcmp((char*)uncompr, hello)) + error("bad gzread: %s\n", (char*)uncompr); + else + printf("gzread(): %s\n", (char*)uncompr); + /* Check position at the end of the gz file */ + if (PREFIX(gzeof)(file) != 1) + error("gzeof err: not reporting end of stream\n"); + + /* Seek backwards mid-string and check char reading with gzgetc and gzungetc */ + pos = PREFIX(gzseek)(file, -22L, SEEK_CUR); + if (pos != 6 || PREFIX(gztell)(file) != pos) + error("gzseek error, pos=%ld, gztell=%ld\n", (long)pos, (long)PREFIX(gztell)(file)); + if (PREFIX(gzgetc)(file) != ' ') + error("gzgetc error\n"); + if (PREFIX(gzungetc)(' ', file) != ' ') + error("gzungetc error\n"); + /* Read first hello, hello! string with gzgets */ + strcpy((char*)uncompr, "garbages"); + PREFIX(gzgets)(file, (char*)uncompr, (int)uncomprLen); + if (strlen((char*)uncompr) != 7) /* " hello!" */ + error("gzgets err after gzseek: %s\n", PREFIX(gzerror)(file, &err)); + if (strcmp((char*)uncompr, hello + 6)) + error("bad gzgets after gzseek\n"); + else + printf("gzgets() after gzseek: %s\n", (char*)uncompr); + /* Seek to second hello, hello! string */ + pos = PREFIX(gzseek)(file, 14L, SEEK_SET); + if (pos != 14 || PREFIX(gztell)(file) != pos) + error("gzseek error, pos=%ld, gztell=%ld\n", (long)pos, (long)PREFIX(gztell)(file)); + /* Check position not at end of file */ + if (PREFIX(gzeof)(file) != 0) + error("gzeof err: reporting end of stream\n"); + /* Read first hello, hello! string with gzfread */ + strcpy((char*)uncompr, "garbages"); + read = PREFIX(gzfread)(uncompr, uncomprLen, 1, file); + if (strcmp((const char *)uncompr, hello) != 0) + error("bad gzgets\n"); + else + printf("gzgets(): %s\n", (char*)uncompr); + pos = PREFIX(gzoffset)(file); + if (pos < 0 || pos != (comprLen + 10)) + error("gzoffset err: wrong offset at end\n"); + /* Trigger an error and clear it with gzclearerr */ + PREFIX(gzfread)(uncompr, (size_t)-1, (size_t)-1, file); + PREFIX(gzerror)(file, &err); + if (err == 0) + error("gzerror err: no error returned\n"); + PREFIX(gzclearerr)(file); + PREFIX(gzerror)(file, &err); + if (err != 0) + error("gzclearerr err: not zero %d\n", err); + + PREFIX(gzclose)(file); + + if (PREFIX(gzclose)(NULL) != Z_STREAM_ERROR) + error("gzclose unexpected return when handle null\n"); + Z_UNUSED(read); +#endif +} + +/* =========================================================================== + * Test deflate() with small buffers + */ +static void test_deflate(unsigned char *compr, size_t comprLen) { + PREFIX3(stream) c_stream; /* compression stream */ + int err; + size_t len = strlen(hello)+1; + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (void *)0; + c_stream.total_in = 0; + c_stream.total_out = 0; + + err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + c_stream.next_in = (z_const unsigned char *)hello; + c_stream.next_out = compr; + + while (c_stream.total_in != len && c_stream.total_out < comprLen) { + c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ + err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + } + /* Finish the stream, still forcing small buffers: */ + for (;;) { + c_stream.avail_out = 1; + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err == Z_STREAM_END) break; + CHECK_ERR(err, "deflate"); + } + + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); +} + +/* =========================================================================== + * Test inflate() with small buffers + */ +static void test_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) { + int err; + PREFIX3(stream) d_stream; /* decompression stream */ + + strcpy((char*)uncompr, "garbage"); + + d_stream.zalloc = zalloc; + d_stream.zfree = zfree; + d_stream.opaque = (void *)0; + + d_stream.next_in = compr; + d_stream.avail_in = 0; + d_stream.next_out = uncompr; + d_stream.total_in = 0; + d_stream.total_out = 0; + + err = PREFIX(inflateInit)(&d_stream); + CHECK_ERR(err, "inflateInit"); + + while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) { + d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */ + err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); + if (err == Z_STREAM_END) break; + CHECK_ERR(err, "inflate"); + } + + err = PREFIX(inflateEnd)(&d_stream); + CHECK_ERR(err, "inflateEnd"); + + if (strcmp((char*)uncompr, hello)) + error("bad inflate\n"); + else + printf("inflate(): %s\n", (char *)uncompr); +} + +static unsigned int diff; + +/* =========================================================================== + * Test deflate() with large buffers and dynamic change of compression level + */ +static void test_large_deflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen, int zng_params) { + PREFIX3(stream) c_stream; /* compression stream */ + int err; +#ifndef ZLIB_COMPAT + int level = -1; + int strategy = -1; + zng_deflate_param_value params[2]; + + params[0].param = Z_DEFLATE_LEVEL; + params[0].buf = &level; + params[0].size = sizeof(level); + + params[1].param = Z_DEFLATE_STRATEGY; + params[1].buf = &strategy; + params[1].size = sizeof(strategy); +#endif + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (void *)0; + + err = PREFIX(deflateInit)(&c_stream, Z_BEST_SPEED); + CHECK_ERR(err, "deflateInit"); + + c_stream.next_out = compr; + c_stream.avail_out = (unsigned int)comprLen; + + /* At this point, uncompr is still mostly zeroes, so it should compress + * very well: + */ + c_stream.next_in = uncompr; + c_stream.avail_in = (unsigned int)uncomprLen; + err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + if (c_stream.avail_in != 0) + error("deflate not greedy\n"); + + /* Feed in already compressed data and switch to no compression: */ + if (zng_params) { +#ifndef ZLIB_COMPAT + zng_deflateGetParams(&c_stream, params, sizeof(params) / sizeof(params[0])); + if (level != Z_BEST_SPEED) + error("Expected compression level Z_BEST_SPEED, got %d\n", level); + if (strategy != Z_DEFAULT_STRATEGY) + error("Expected compression strategy Z_DEFAULT_STRATEGY, got %d\n", strategy); + level = Z_NO_COMPRESSION; + strategy = Z_DEFAULT_STRATEGY; + zng_deflateSetParams(&c_stream, params, sizeof(params) / sizeof(params[0])); +#else + error("test_large_deflate() called with zng_params=1 in compat mode\n"); +#endif + } else { + PREFIX(deflateParams)(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY); + } + c_stream.next_in = compr; + diff = (unsigned int)(c_stream.next_out - compr); + c_stream.avail_in = diff; + err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + + /* Switch back to compressing mode: */ + if (zng_params) { +#ifndef ZLIB_COMPAT + level = -1; + strategy = -1; + zng_deflateGetParams(&c_stream, params, sizeof(params) / sizeof(params[0])); + if (level != Z_NO_COMPRESSION) + error("Expected compression level Z_NO_COMPRESSION, got %d\n", level); + if (strategy != Z_DEFAULT_STRATEGY) + error("Expected compression strategy Z_DEFAULT_STRATEGY, got %d\n", strategy); + level = Z_BEST_COMPRESSION; + strategy = Z_FILTERED; + zng_deflateSetParams(&c_stream, params, sizeof(params) / sizeof(params[0])); +#else + error("test_large_deflate() called with zng_params=1 in compat mode\n"); +#endif + } else { + PREFIX(deflateParams)(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED); + } + c_stream.next_in = uncompr; + c_stream.avail_in = (unsigned int)uncomprLen; + err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err != Z_STREAM_END) + error("deflate should report Z_STREAM_END\n"); + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); +} + +/* =========================================================================== + * Test inflate() with large buffers + */ +static void test_large_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) { + int err; + PREFIX3(stream) d_stream; /* decompression stream */ + + strcpy((char*)uncompr, "garbage"); + + d_stream.zalloc = zalloc; + d_stream.zfree = zfree; + d_stream.opaque = (void *)0; + + d_stream.next_in = compr; + d_stream.avail_in = (unsigned int)comprLen; + d_stream.total_in = 0; + d_stream.total_out = 0; + + err = PREFIX(inflateInit)(&d_stream); + CHECK_ERR(err, "inflateInit"); + + for (;;) { + d_stream.next_out = uncompr; /* discard the output */ + d_stream.avail_out = (unsigned int)uncomprLen; + err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); + if (err == Z_STREAM_END) break; + CHECK_ERR(err, "large inflate"); + } + + err = PREFIX(inflateEnd)(&d_stream); + CHECK_ERR(err, "inflateEnd"); + + if (d_stream.total_out != 2*uncomprLen + diff) + error("bad large inflate: %" PRIu64 "\n", (uint64_t)d_stream.total_out); + else + printf("large_inflate(): OK\n"); +} + +/* =========================================================================== + * Test deflate() with full flush + */ +static void test_flush(unsigned char *compr, z_uintmax_t *comprLen) { + PREFIX3(stream) c_stream; /* compression stream */ + int err; + unsigned int len = (unsigned int)strlen(hello)+1; + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (void *)0; + + err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + c_stream.next_in = (z_const unsigned char *)hello; + c_stream.next_out = compr; + c_stream.avail_in = 3; + c_stream.avail_out = (unsigned int)*comprLen; + err = PREFIX(deflate)(&c_stream, Z_FULL_FLUSH); + CHECK_ERR(err, "deflate"); + + compr[3]++; /* force an error in first compressed block */ + c_stream.avail_in = len - 3; + + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err != Z_STREAM_END) { + CHECK_ERR(err, "deflate"); + } + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); + + *comprLen = (z_size_t)c_stream.total_out; +} + +#ifndef TEST_STOCK_ZLIB +/* =========================================================================== + * Test inflateSync() + * We expect a certain compressed block layout, so skip this with the original zlib. + */ +static void test_sync(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) { + int err; + PREFIX3(stream) d_stream; /* decompression stream */ + + strcpy((char*)uncompr, "garbage"); + + d_stream.zalloc = zalloc; + d_stream.zfree = zfree; + d_stream.opaque = (void *)0; + + d_stream.next_in = compr; + d_stream.avail_in = 2; /* just read the zlib header */ + + err = PREFIX(inflateInit)(&d_stream); + CHECK_ERR(err, "inflateInit"); + + d_stream.next_out = uncompr; + d_stream.avail_out = (unsigned int)uncomprLen; + + err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); + CHECK_ERR(err, "inflate"); + + d_stream.avail_in = (unsigned int)comprLen-2; /* read all compressed data */ + err = PREFIX(inflateSync)(&d_stream); /* but skip the damaged part */ + CHECK_ERR(err, "inflateSync"); + + err = PREFIX(inflate)(&d_stream, Z_FINISH); + if (err != Z_STREAM_END) + error("inflate should report Z_STREAM_END\n"); + err = PREFIX(inflateEnd)(&d_stream); + CHECK_ERR(err, "inflateEnd"); + + printf("after inflateSync(): hel%s\n", (char *)uncompr); +} +#endif + +/* =========================================================================== + * Test deflate() with preset dictionary + */ +static void test_dict_deflate(unsigned char *compr, size_t comprLen) { + PREFIX3(stream) c_stream; /* compression stream */ + int err; + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (void *)0; + c_stream.adler = 0; + + err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + err = PREFIX(deflateSetDictionary)(&c_stream, + (const unsigned char*)dictionary, (int)sizeof(dictionary)); + CHECK_ERR(err, "deflateSetDictionary"); + + dictId = c_stream.adler; + c_stream.next_out = compr; + c_stream.avail_out = (unsigned int)comprLen; + + c_stream.next_in = (z_const unsigned char *)hello; + c_stream.avail_in = (unsigned int)strlen(hello)+1; + + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err != Z_STREAM_END) + error("deflate should report Z_STREAM_END\n"); + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); +} + +/* =========================================================================== + * Test inflate() with a preset dictionary + */ +static void test_dict_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) { + int err; + uint8_t check_dictionary[MAX_DICTIONARY_SIZE]; + uint32_t check_dictionary_len = 0; + PREFIX3(stream) d_stream; /* decompression stream */ + + strcpy((char*)uncompr, "garbage garbage garbage"); + + d_stream.zalloc = zalloc; + d_stream.zfree = zfree; + d_stream.opaque = (void *)0; + d_stream.adler = 0; + d_stream.next_in = compr; + d_stream.avail_in = (unsigned int)comprLen; + + err = PREFIX(inflateInit)(&d_stream); + CHECK_ERR(err, "inflateInit"); + + d_stream.next_out = uncompr; + d_stream.avail_out = (unsigned int)uncomprLen; + + for (;;) { + err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); + if (err == Z_STREAM_END) break; + if (err == Z_NEED_DICT) { + if (d_stream.adler != dictId) + error("unexpected dictionary"); + err = PREFIX(inflateSetDictionary)(&d_stream, (const unsigned char*)dictionary, + (int)sizeof(dictionary)); + } + CHECK_ERR(err, "inflate with dict"); + } + + err = PREFIX(inflateGetDictionary)(&d_stream, NULL, &check_dictionary_len); + CHECK_ERR(err, "inflateGetDictionary"); +#ifndef S390_DFLTCC_INFLATE + if (check_dictionary_len < sizeof(dictionary)) + error("bad dictionary length\n"); +#endif + + err = PREFIX(inflateGetDictionary)(&d_stream, check_dictionary, &check_dictionary_len); + CHECK_ERR(err, "inflateGetDictionary"); +#ifndef S390_DFLTCC_INFLATE + if (memcmp(dictionary, check_dictionary, sizeof(dictionary)) != 0) + error("bad dictionary\n"); +#endif + + err = PREFIX(inflateEnd)(&d_stream); + CHECK_ERR(err, "inflateEnd"); + + if (strncmp((char*)uncompr, hello, sizeof(hello))) + error("bad inflate with dict\n"); + else + printf("inflate with dictionary: %s\n", (char *)uncompr); +} + +/* =========================================================================== + * Test deflateBound() with small buffers + */ +static void test_deflate_bound(void) { + PREFIX3(stream) c_stream; /* compression stream */ + int err; + unsigned int len = (unsigned int)strlen(hello)+1; + int estimateLen = 0; + unsigned char *outBuf = NULL; + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + c_stream.avail_in = len; + c_stream.next_in = (z_const unsigned char *)hello; + c_stream.avail_out = 0; + c_stream.next_out = outBuf; + + err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + /* calculate actual output length and update structure */ + estimateLen = PREFIX(deflateBound)(&c_stream, len); + outBuf = malloc(estimateLen); + + if (outBuf != NULL) { + /* update zlib configuration */ + c_stream.avail_out = estimateLen; + c_stream.next_out = outBuf; + + /* do the compression */ + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err == Z_STREAM_END) { + printf("deflateBound(): OK\n"); + } else { + CHECK_ERR(err, "deflate"); + } + } + + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); + + free(outBuf); +} + +/* =========================================================================== + * Test deflateCopy() with small buffers + */ +static void test_deflate_copy(unsigned char *compr, size_t comprLen) { + PREFIX3(stream) c_stream, c_stream_copy; /* compression stream */ + int err; + size_t len = strlen(hello)+1; + + memset(&c_stream, 0, sizeof(c_stream)); + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + + err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + c_stream.next_in = (z_const unsigned char *)hello; + c_stream.next_out = compr; + + while (c_stream.total_in != len && c_stream.total_out < comprLen) { + c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ + err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + } + + /* Finish the stream, still forcing small buffers: */ + for (;;) { + c_stream.avail_out = 1; + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err == Z_STREAM_END) break; + CHECK_ERR(err, "deflate"); + } + + err = PREFIX(deflateCopy)(&c_stream_copy, &c_stream); + CHECK_ERR(err, "deflate_copy"); + + if (c_stream.state->status == c_stream_copy.state->status) { + printf("deflate_copy(): OK\n"); + } + + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd original"); + + err = PREFIX(deflateEnd)(&c_stream_copy); + CHECK_ERR(err, "deflateEnd copy"); +} + +/* =========================================================================== + * Test deflateGetDictionary() with small buffers + */ +static void test_deflate_get_dict(unsigned char *compr, size_t comprLen) { + PREFIX3(stream) c_stream; /* compression stream */ + int err; + unsigned char *dictNew = NULL; + z_uint32_t *dictLen; + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + + err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + c_stream.next_out = compr; + c_stream.avail_out = (uInt)comprLen; + + c_stream.next_in = (z_const unsigned char *)hello; + c_stream.avail_in = (unsigned int)strlen(hello)+1; + + err = PREFIX(deflate)(&c_stream, Z_FINISH); + + if (err != Z_STREAM_END) + error("deflate should report Z_STREAM_END\n"); + + dictNew = calloc(256, 1); + dictLen = (z_uint32_t *)calloc(4, 1); + err = PREFIX(deflateGetDictionary)(&c_stream, dictNew, dictLen); + + CHECK_ERR(err, "deflateGetDictionary"); + if (err == Z_OK) { + printf("deflateGetDictionary(): %s\n", dictNew); + } + + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); + + free(dictNew); + free(dictLen); +} + +/* =========================================================================== + * Test deflatePending() with small buffers + */ +static void test_deflate_pending(unsigned char *compr, size_t comprLen) { + PREFIX3(stream) c_stream; /* compression stream */ + int err; + z_int32_t *bits = calloc(256, 1); + z_uint32_t *ped = calloc(256, 1); + size_t len = strlen(hello)+1; + + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + + err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + c_stream.next_in = (z_const unsigned char *)hello; + c_stream.next_out = compr; + + while (c_stream.total_in != len && c_stream.total_out < comprLen) { + c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ + err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + } + + err = PREFIX(deflatePending)(&c_stream, ped, bits); + CHECK_ERR(err, "deflatePending"); + + if (*bits >= 0 && *bits <= 7) { + printf("deflatePending(): OK\n"); + } else { + printf("deflatePending(): error\n"); + } + + /* Finish the stream, still forcing small buffers: */ + for (;;) { + c_stream.avail_out = 1; + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err == Z_STREAM_END) break; + CHECK_ERR(err, "deflate"); + } + + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); + + free(bits); + free(ped); +} + +/* =========================================================================== + * Test deflatePrime() wrapping gzip around deflate stream + */ +static void test_deflate_prime(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) { + PREFIX3(stream) c_stream; /* compression stream */ + PREFIX3(stream) d_stream; /* decompression stream */ + int err; + size_t len = strlen(hello)+1; + uint32_t crc = 0; + + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + + /* Raw deflate windowBits is -15 */ + err = PREFIX(deflateInit2)(&c_stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -MAX_WBITS, 8, Z_DEFAULT_STRATEGY); + CHECK_ERR(err, "deflateInit2"); + + /* Gzip magic number */ + err = PREFIX(deflatePrime)(&c_stream, 16, 0x8b1f); + CHECK_ERR(err, "deflatePrime"); + /* Gzip compression method (deflate) */ + err = PREFIX(deflatePrime)(&c_stream, 8, 0x08); + CHECK_ERR(err, "deflatePrime"); + /* Gzip flags (one byte, using two odd bit calls) */ + err = PREFIX(deflatePrime)(&c_stream, 3, 0x0); + CHECK_ERR(err, "deflatePrime"); + err = PREFIX(deflatePrime)(&c_stream, 5, 0x0); + CHECK_ERR(err, "deflatePrime"); + /* Gzip modified time */ + err = deflate_prime_32(&c_stream, 0); + CHECK_ERR(err, "deflatePrime"); + /* Gzip extra flags */ + err = PREFIX(deflatePrime)(&c_stream, 8, 0x0); + CHECK_ERR(err, "deflatePrime"); + /* Gzip operating system */ + err = PREFIX(deflatePrime)(&c_stream, 8, 255); + CHECK_ERR(err, "deflatePrime"); + + c_stream.next_in = (z_const unsigned char *)hello; + c_stream.avail_in = (uint32_t)len; + c_stream.next_out = compr; + c_stream.avail_out = (uint32_t)comprLen; + + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err != Z_STREAM_END) + CHECK_ERR(err, "deflate"); + + /* Gzip uncompressed data crc32 */ + crc = PREFIX(crc32)(0, (const uint8_t *)hello, (uint32_t)len); + err = deflate_prime_32(&c_stream, crc); + CHECK_ERR(err, "deflatePrime"); + /* Gzip uncompressed data length */ + err = deflate_prime_32(&c_stream, (uint32_t)len); + CHECK_ERR(err, "deflatePrime"); + + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); + + d_stream.zalloc = zalloc; + d_stream.zfree = zfree; + d_stream.opaque = (void *)0; + + d_stream.next_in = compr; + d_stream.avail_in = (uint32_t)c_stream.total_out; + d_stream.next_out = uncompr; + d_stream.avail_out = (uint32_t)uncomprLen; + d_stream.total_in = 0; + d_stream.total_out = 0; + + /* Inflate with gzip header */ + err = PREFIX(inflateInit2)(&d_stream, MAX_WBITS + 32); + CHECK_ERR(err, "inflateInit"); + + err = PREFIX(inflate)(&d_stream, Z_FINISH); + if (err != Z_BUF_ERROR) { + CHECK_ERR(err, "inflate"); + } + + err = PREFIX(inflateEnd)(&d_stream); + CHECK_ERR(err, "inflateEnd"); + + if (strcmp((const char *)uncompr, hello) != 0) + error("bad deflatePrime\n"); + if (err == Z_OK) + printf("deflatePrime(): OK\n"); +} + +/* =========================================================================== + * Test deflateSetHeader() with small buffers + */ +static void test_deflate_set_header(unsigned char *compr, size_t comprLen) { + PREFIX(gz_header) *head = calloc(1, sizeof(PREFIX(gz_header))); + PREFIX3(stream) c_stream; /* compression stream */ + int err; + size_t len = strlen(hello)+1; + + + if (head == NULL) + error("out of memory\n"); + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + + /* gzip */ + err = PREFIX(deflateInit2)(&c_stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, MAX_WBITS + 16, 8, Z_DEFAULT_STRATEGY); + CHECK_ERR(err, "deflateInit2"); + + head->text = 1; + head->comment = (uint8_t *)"comment"; + head->name = (uint8_t *)"name"; + head->hcrc = 1; + head->extra = (uint8_t *)"extra"; + head->extra_len = (uint32_t)strlen((const char *)head->extra); + + err = PREFIX(deflateSetHeader)(&c_stream, head); + CHECK_ERR(err, "deflateSetHeader"); + if (err == Z_OK) { + printf("deflateSetHeader(): OK\n"); + } + PREFIX(deflateBound)(&c_stream, (unsigned long)comprLen); + + c_stream.next_in = (unsigned char *)hello; + c_stream.next_out = compr; + + while (c_stream.total_in != len && c_stream.total_out < comprLen) { + c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ + err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + } + + /* Finish the stream, still forcing small buffers: */ + for (;;) { + c_stream.avail_out = 1; + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err == Z_STREAM_END) break; + CHECK_ERR(err, "deflate"); + } + + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); + + free(head); +} + +/* =========================================================================== + * Test deflateTune() with small buffers + */ +static void test_deflate_tune(unsigned char *compr, size_t comprLen) { + PREFIX3(stream) c_stream; /* compression stream */ + int err; + int good_length = 3; + int max_lazy = 5; + int nice_length = 18; + int max_chain = 6; + size_t len = strlen(hello)+1; + + + c_stream.zalloc = zalloc; + c_stream.zfree = zfree; + c_stream.opaque = (voidpf)0; + + err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION); + CHECK_ERR(err, "deflateInit"); + + err = PREFIX(deflateTune)(&c_stream,(uInt)good_length,(uInt)max_lazy,nice_length,(uInt)max_chain); + CHECK_ERR(err, "deflateTune"); + if (err == Z_OK) { + printf("deflateTune(): OK\n"); + } + + c_stream.next_in = (z_const unsigned char *)hello; + c_stream.next_out = compr; + + while (c_stream.total_in != len && c_stream.total_out < comprLen) { + c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ + err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); + CHECK_ERR(err, "deflate"); + } + + /* Finish the stream, still forcing small buffers: */ + for (;;) { + c_stream.avail_out = 1; + err = PREFIX(deflate)(&c_stream, Z_FINISH); + if (err == Z_STREAM_END) break; + CHECK_ERR(err, "deflate"); + } + + err = PREFIX(deflateEnd)(&c_stream); + CHECK_ERR(err, "deflateEnd"); +} + +/* =========================================================================== + * Usage: example [output.gz [input.gz]] + */ +int main(int argc, char *argv[]) { + unsigned char *compr, *uncompr; + z_uintmax_t comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */ + z_uintmax_t uncomprLen = comprLen; + static const char* myVersion = PREFIX2(VERSION); + + if (zVersion()[0] != myVersion[0]) { + fprintf(stderr, "incompatible zlib version\n"); + exit(1); + + } else if (strcmp(zVersion(), PREFIX2(VERSION)) != 0) { + fprintf(stderr, "warning: different zlib version linked: %s\n", zVersion()); + } + + printf("zlib-ng version %s = 0x%08lx, compile flags = 0x%lx\n", + ZLIBNG_VERSION, ZLIBNG_VERNUM, PREFIX(zlibCompileFlags)()); + + compr = (unsigned char*)calloc((unsigned int)comprLen, 1); + uncompr = (unsigned char*)calloc((unsigned int)uncomprLen, 1); + /* compr and uncompr are cleared to avoid reading uninitialized + * data and to ensure that uncompr compresses well. + */ + if (compr == NULL || uncompr == NULL) + error("out of memory\n"); + + test_compress(compr, comprLen, uncompr, uncomprLen); + + test_gzio((argc > 1 ? argv[1] : TESTFILE), + uncompr, uncomprLen); + + test_deflate(compr, comprLen); + test_inflate(compr, comprLen, uncompr, uncomprLen); + + test_large_deflate(compr, comprLen, uncompr, uncomprLen, 0); + test_large_inflate(compr, comprLen, uncompr, uncomprLen); + +#ifndef ZLIB_COMPAT + test_large_deflate(compr, comprLen, uncompr, uncomprLen, 1); + test_large_inflate(compr, comprLen, uncompr, uncomprLen); +#endif + + test_flush(compr, &comprLen); +#ifndef TEST_STOCK_ZLIB + test_sync(compr, comprLen, uncompr, uncomprLen); +#endif + comprLen = uncomprLen; + + test_dict_deflate(compr, comprLen); + test_dict_inflate(compr, comprLen, uncompr, uncomprLen); + + test_deflate_bound(); + test_deflate_copy(compr, comprLen); + test_deflate_get_dict(compr, comprLen); + test_deflate_set_header(compr, comprLen); + test_deflate_tune(compr, comprLen); + test_deflate_pending(compr, comprLen); + test_deflate_prime(compr, comprLen, uncompr, uncomprLen); + + free(compr); + free(uncompr); + + return 0; +} |