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65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/* This file is part of libmspack.
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* (C) 2003-2018 Stuart Caie.
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*
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* libmspack is free software; you can redistribute it and/or modify it under
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* the terms of the GNU Lesser General Public License (LGPL) version 2.1
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*
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* For further details, see the file COPYING.LIB distributed with libmspack
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*/
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#ifndef MSPACK_SYSTEM_H
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#define MSPACK_SYSTEM_H 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* ensure config.h is read before mspack.h */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <mspack.h>
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#include <macros.h>
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/* assume <string.h> exists */
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#ifndef MSPACK_NO_DEFAULT_SYSTEM
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# include <string.h>
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#else
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/* but if no default system wanted, avoid using <string.h> entirely,
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* to avoid linking to even these standard C library functions */
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static inline int memcmp(const void *s1, const void *s2, size_t n) {
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const unsigned char *a = s1, *b = s2;
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while (n--) if (*a++ != *b++) return a[-1] - b[-1];
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return 0;
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}
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static inline void *memset(void *s, int c, size_t n) {
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unsigned char *s2 = s, c2 = (unsigned char) c;
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while (n--) *s2++ = c2;
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return s;
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}
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static inline size_t strlen(const char *s) {
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size_t c = 0; while (*s++) c++; return c;
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}
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#endif
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/* fix for problem with GCC 4 and glibc (thanks to Ville Skytta)
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* http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=150429
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*/
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#ifdef read
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# undef read
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#endif
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extern struct mspack_system *mspack_default_system;
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/* returns the length of a file opened for reading */
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extern int mspack_sys_filelen(struct mspack_system *system,
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struct mspack_file *file, off_t *length);
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/* validates a system structure */
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extern int mspack_valid_system(struct mspack_system *sys);
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#ifdef __cplusplus
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}
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#endif
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#endif
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