X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c801d85f158c4cba50b588807daabdcbd0ed3853..9d5507f7a2701395e1d5c121bd877bb9066ee6ea:/src/zlib/example.c?ds=inline diff --git a/src/zlib/example.c b/src/zlib/example.c index 073ce76b33..6c8a0ee763 100644 --- a/src/zlib/example.c +++ b/src/zlib/example.c @@ -1,6 +1,6 @@ /* example.c -- usage example of the zlib compression library - * Copyright (C) 1995-1998 Jean-loup Gailly. - * For conditions of distribution and use, see copyright notice in zlib.h + * Copyright (C) 1995-2004 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h */ /* @(#) $Id$ */ @@ -11,8 +11,12 @@ #ifdef STDC # include # include +#endif + +#if defined(VMS) || defined(RISCOS) +# define TESTFILE "foo-gz" #else - extern void exit OF((int)); +# define TESTFILE "foo.gz" #endif #define CHECK_ERR(err, msg) { \ @@ -31,22 +35,22 @@ const char dictionary[] = "hello"; uLong dictId; /* Adler32 value of the dictionary */ void test_compress OF((Byte *compr, uLong comprLen, - Byte *uncompr, uLong uncomprLen)); -void test_gzio OF((const char *out, const char *in, - Byte *uncompr, int uncomprLen)); + Byte *uncompr, uLong uncomprLen)); +void test_gzio OF((const char *fname, + Byte *uncompr, uLong uncomprLen)); void test_deflate OF((Byte *compr, uLong comprLen)); void test_inflate OF((Byte *compr, uLong comprLen, - Byte *uncompr, uLong uncomprLen)); + Byte *uncompr, uLong uncomprLen)); void test_large_deflate OF((Byte *compr, uLong comprLen, - Byte *uncompr, uLong uncomprLen)); + Byte *uncompr, uLong uncomprLen)); void test_large_inflate OF((Byte *compr, uLong comprLen, - Byte *uncompr, uLong uncomprLen)); + Byte *uncompr, uLong uncomprLen)); void test_flush OF((Byte *compr, uLong *comprLen)); void test_sync OF((Byte *compr, uLong comprLen, - Byte *uncompr, uLong uncomprLen)); + Byte *uncompr, uLong uncomprLen)); void test_dict_deflate OF((Byte *compr, uLong comprLen)); void test_dict_inflate OF((Byte *compr, uLong comprLen, - Byte *uncompr, uLong uncomprLen)); + Byte *uncompr, uLong uncomprLen)); int main OF((int argc, char *argv[])); /* =========================================================================== @@ -57,7 +61,7 @@ void test_compress(compr, comprLen, uncompr, uncomprLen) uLong comprLen, uncomprLen; { int err; - uLong len = strlen(hello)+1; + uLong len = (uLong)strlen(hello)+1; err = compress(compr, &comprLen, (const Bytef*)hello, len); CHECK_ERR(err, "compress"); @@ -69,7 +73,7 @@ void test_compress(compr, comprLen, uncompr, uncomprLen) if (strcmp((char*)uncompr, hello)) { fprintf(stderr, "bad uncompress\n"); - exit(1); + exit(1); } else { printf("uncompress(): %s\n", (char *)uncompr); } @@ -78,18 +82,20 @@ void test_compress(compr, comprLen, uncompr, uncomprLen) /* =========================================================================== * Test read/write of .gz files */ -void test_gzio(out, in, uncompr, uncomprLen) - const char *out; /* output file */ - const char *in; /* input file */ +void test_gzio(fname, uncompr, uncomprLen) + const char *fname; /* compressed file name */ Byte *uncompr; - int uncomprLen; + uLong uncomprLen; { +#ifdef NO_GZCOMPRESS + fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n"); +#else int err; - int len = strlen(hello)+1; + int len = (int)strlen(hello)+1; gzFile file; z_off_t pos; - file = gzopen(out, "wb"); + file = gzopen(fname, "wb"); if (file == NULL) { fprintf(stderr, "gzopen error\n"); exit(1); @@ -97,59 +103,64 @@ void test_gzio(out, in, uncompr, uncomprLen) gzputc(file, 'h'); if (gzputs(file, "ello") != 4) { fprintf(stderr, "gzputs err: %s\n", gzerror(file, &err)); - exit(1); + exit(1); } if (gzprintf(file, ", %s!", "hello") != 8) { fprintf(stderr, "gzprintf err: %s\n", gzerror(file, &err)); - exit(1); + exit(1); } gzseek(file, 1L, SEEK_CUR); /* add one zero byte */ gzclose(file); - file = gzopen(in, "rb"); + file = gzopen(fname, "rb"); if (file == NULL) { fprintf(stderr, "gzopen error\n"); + exit(1); } strcpy((char*)uncompr, "garbage"); - uncomprLen = gzread(file, uncompr, (unsigned)uncomprLen); - if (uncomprLen != len) { + if (gzread(file, uncompr, (unsigned)uncomprLen) != len) { fprintf(stderr, "gzread err: %s\n", gzerror(file, &err)); - exit(1); + exit(1); } if (strcmp((char*)uncompr, hello)) { fprintf(stderr, "bad gzread: %s\n", (char*)uncompr); - exit(1); + exit(1); } else { - printf("gzread(): %s\n", (char *)uncompr); + printf("gzread(): %s\n", (char*)uncompr); } pos = gzseek(file, -8L, SEEK_CUR); if (pos != 6 || gztell(file) != pos) { - fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n", - (long)pos, (long)gztell(file)); - exit(1); + fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n", + (long)pos, (long)gztell(file)); + exit(1); } if (gzgetc(file) != ' ') { - fprintf(stderr, "gzgetc error\n"); - exit(1); + fprintf(stderr, "gzgetc error\n"); + exit(1); + } + + if (gzungetc(' ', file) != ' ') { + fprintf(stderr, "gzungetc error\n"); + exit(1); } - gzgets(file, (char*)uncompr, uncomprLen); - uncomprLen = strlen((char*)uncompr); - if (uncomprLen != 6) { /* "hello!" */ + gzgets(file, (char*)uncompr, (int)uncomprLen); + if (strlen((char*)uncompr) != 7) { /* " hello!" */ fprintf(stderr, "gzgets err after gzseek: %s\n", gzerror(file, &err)); - exit(1); + exit(1); } - if (strcmp((char*)uncompr, hello+7)) { + if (strcmp((char*)uncompr, hello + 6)) { fprintf(stderr, "bad gzgets after gzseek\n"); - exit(1); + exit(1); } else { - printf("gzgets() after gzseek: %s\n", (char *)uncompr); + printf("gzgets() after gzseek: %s\n", (char*)uncompr); } gzclose(file); +#endif } /* =========================================================================== @@ -161,7 +172,7 @@ void test_deflate(compr, comprLen) { z_stream c_stream; /* compression stream */ int err; - int len = strlen(hello)+1; + uLong len = (uLong)strlen(hello)+1; c_stream.zalloc = (alloc_func)0; c_stream.zfree = (free_func)0; @@ -173,7 +184,7 @@ void test_deflate(compr, comprLen) c_stream.next_in = (Bytef*)hello; c_stream.next_out = compr; - while (c_stream.total_in != (uLong)len && c_stream.total_out < comprLen) { + while (c_stream.total_in != len && c_stream.total_out < comprLen) { c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ err = deflate(&c_stream, Z_NO_FLUSH); CHECK_ERR(err, "deflate"); @@ -225,7 +236,7 @@ void test_inflate(compr, comprLen, uncompr, uncomprLen) if (strcmp((char*)uncompr, hello)) { fprintf(stderr, "bad inflate\n"); - exit(1); + exit(1); } else { printf("inflate(): %s\n", (char *)uncompr); } @@ -260,7 +271,7 @@ void test_large_deflate(compr, comprLen, uncompr, uncomprLen) CHECK_ERR(err, "deflate"); if (c_stream.avail_in != 0) { fprintf(stderr, "deflate not greedy\n"); - exit(1); + exit(1); } /* Feed in already compressed data and switch to no compression: */ @@ -280,7 +291,7 @@ void test_large_deflate(compr, comprLen, uncompr, uncomprLen) err = deflate(&c_stream, Z_FINISH); if (err != Z_STREAM_END) { fprintf(stderr, "deflate should report Z_STREAM_END\n"); - exit(1); + exit(1); } err = deflateEnd(&c_stream); CHECK_ERR(err, "deflateEnd"); @@ -310,7 +321,7 @@ void test_large_inflate(compr, comprLen, uncompr, uncomprLen) for (;;) { d_stream.next_out = uncompr; /* discard the output */ - d_stream.avail_out = (uInt)uncomprLen; + d_stream.avail_out = (uInt)uncomprLen; err = inflate(&d_stream, Z_NO_FLUSH); if (err == Z_STREAM_END) break; CHECK_ERR(err, "large inflate"); @@ -321,7 +332,7 @@ void test_large_inflate(compr, comprLen, uncompr, uncomprLen) if (d_stream.total_out != 2*uncomprLen + comprLen/2) { fprintf(stderr, "bad large inflate: %ld\n", d_stream.total_out); - exit(1); + exit(1); } else { printf("large_inflate(): OK\n"); } @@ -336,7 +347,7 @@ void test_flush(compr, comprLen) { z_stream c_stream; /* compression stream */ int err; - int len = strlen(hello)+1; + uInt len = (uInt)strlen(hello)+1; c_stream.zalloc = (alloc_func)0; c_stream.zfree = (free_func)0; @@ -401,7 +412,7 @@ void test_sync(compr, comprLen, uncompr, uncomprLen) if (err != Z_DATA_ERROR) { fprintf(stderr, "inflate should report DATA_ERROR\n"); /* Because of incorrect adler32 */ - exit(1); + exit(1); } err = inflateEnd(&d_stream); CHECK_ERR(err, "inflateEnd"); @@ -427,7 +438,7 @@ void test_dict_deflate(compr, comprLen) CHECK_ERR(err, "deflateInit"); err = deflateSetDictionary(&c_stream, - (const Bytef*)dictionary, sizeof(dictionary)); + (const Bytef*)dictionary, sizeof(dictionary)); CHECK_ERR(err, "deflateSetDictionary"); dictId = c_stream.adler; @@ -440,7 +451,7 @@ void test_dict_deflate(compr, comprLen) err = deflate(&c_stream, Z_FINISH); if (err != Z_STREAM_END) { fprintf(stderr, "deflate should report Z_STREAM_END\n"); - exit(1); + exit(1); } err = deflateEnd(&c_stream); CHECK_ERR(err, "deflateEnd"); @@ -474,14 +485,14 @@ void test_dict_inflate(compr, comprLen, uncompr, uncomprLen) for (;;) { err = inflate(&d_stream, Z_NO_FLUSH); if (err == Z_STREAM_END) break; - if (err == Z_NEED_DICT) { - if (d_stream.adler != dictId) { - fprintf(stderr, "unexpected dictionary"); - exit(1); - } - err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary, - sizeof(dictionary)); - } + if (err == Z_NEED_DICT) { + if (d_stream.adler != dictId) { + fprintf(stderr, "unexpected dictionary"); + exit(1); + } + err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary, + sizeof(dictionary)); + } CHECK_ERR(err, "inflate with dict"); } @@ -490,7 +501,7 @@ void test_dict_inflate(compr, comprLen, uncompr, uncomprLen) if (strcmp((char*)uncompr, hello)) { fprintf(stderr, "bad inflate with dict\n"); - exit(1); + exit(1); } else { printf("inflate with dictionary: %s\n", (char *)uncompr); } @@ -517,6 +528,9 @@ int main(argc, argv) fprintf(stderr, "warning: different zlib version\n"); } + printf("zlib version %s = 0x%04x, compile flags = 0x%lx\n", + ZLIB_VERSION, ZLIB_VERNUM, zlibCompileFlags()); + compr = (Byte*)calloc((uInt)comprLen, 1); uncompr = (Byte*)calloc((uInt)uncomprLen, 1); /* compr and uncompr are cleared to avoid reading uninitialized @@ -524,13 +538,12 @@ int main(argc, argv) */ if (compr == Z_NULL || uncompr == Z_NULL) { printf("out of memory\n"); - exit(1); + exit(1); } test_compress(compr, comprLen, uncompr, uncomprLen); - test_gzio((argc > 1 ? argv[1] : "foo.gz"), - (argc > 2 ? argv[2] : "foo.gz"), - uncompr, (int)uncomprLen); + test_gzio((argc > 1 ? argv[1] : TESTFILE), + uncompr, uncomprLen); test_deflate(compr, comprLen); test_inflate(compr, comprLen, uncompr, uncomprLen); @@ -545,6 +558,8 @@ int main(argc, argv) test_dict_deflate(compr, comprLen); test_dict_inflate(compr, comprLen, uncompr, uncomprLen); - exit(0); - return 0; /* to avoid warning */ + free(compr); + free(uncompr); + + return 0; }