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Justine Tunney 2020-06-15 07:18:57 -07:00
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third_party/zlib/zutil.c vendored Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=4 sts=4 sw=4 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 1995-2017 Jean-loup Gailly │
│ Use of this source code is governed by the BSD-style licenses that can │
│ be found in the third_party/zlib/LICENSE file. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/mem/mem.h"
#include "third_party/zlib/zutil.h"
asm(".ident\t\"\\n\\n\
zlib (zlib License)\\n\
Copyright 1995-2017 Jean-loup Gailly and Mark Adler\"");
asm(".include \"libc/disclaimer.inc\"");
const char *const z_errmsg[10] = {
(const char *)"need dictionary", /* Z_NEED_DICT 2 */
(const char *)"stream end", /* Z_STREAM_END 1 */
(const char *)"", /* Z_OK 0 */
(const char *)"file error", /* Z_ERRNO (-1) */
(const char *)"stream error", /* Z_STREAM_ERROR (-2) */
(const char *)"data error", /* Z_DATA_ERROR (-3) */
(const char *)"insufficient memory", /* Z_MEM_ERROR (-4) */
(const char *)"buffer error", /* Z_BUF_ERROR (-5) */
(const char *)"", /* Z_VERSION_ERROR (-6) */
(const char *)"",
};
const char *zlibVersion() { return ZLIB_VERSION; }
uLong zlibCompileFlags() {
uLong flags;
flags = 0;
switch ((int)(sizeof(uInt))) {
case 2:
break;
case 4:
flags += 1;
break;
case 8:
flags += 2;
break;
default:
flags += 3;
}
switch ((int)(sizeof(uLong))) {
case 2:
break;
case 4:
flags += 1 << 2;
break;
case 8:
flags += 2 << 2;
break;
default:
flags += 3 << 2;
}
switch ((int)(sizeof(voidpf))) {
case 2:
break;
case 4:
flags += 1 << 4;
break;
case 8:
flags += 2 << 4;
break;
default:
flags += 3 << 4;
}
switch ((int)(sizeof(int64_t))) {
case 2:
break;
case 4:
flags += 1 << 6;
break;
case 8:
flags += 2 << 6;
break;
default:
flags += 3 << 6;
}
#ifdef ZLIB_DEBUG
flags += 1 << 8;
#endif
#if defined(ASMV) || defined(ASMINF)
flags += 1 << 9;
#endif
#ifdef ZLIB_WINAPI
flags += 1 << 10;
#endif
#ifdef BUILDFIXED
flags += 1 << 12;
#endif
#ifdef DYNAMIC_CRC_TABLE
flags += 1 << 13;
#endif
#ifdef NO_GZCOMPRESS
flags += 1L << 16;
#endif
#ifdef NO_GZIP
flags += 1L << 17;
#endif
#ifdef PKZIP_BUG_WORKAROUND
flags += 1L << 20;
#endif
#ifdef FASTEST
flags += 1L << 21;
#endif
return flags;
}
#ifdef ZLIB_DEBUG
#ifndef verbose
#define verbose 0
#endif
int z_verbose hidden = verbose;
void z_error(char *m) {
fprintf(stderr, "%s\n", m);
exit(1);
}
#endif
/**
* Exported to allow conversion of error code to string for compress()
* and uncompress()
*/
const char *zError(int err) { return ERR_MSG(err); }