102 lines
3.4 KiB
C
102 lines
3.4 KiB
C
/* ******************************************************************
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util.h
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utility functions
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Copyright (C) 2016, Yann Collet.
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BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the
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distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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You can contact the author at :
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- FSE source repository : https://github.com/Cyan4973/FiniteStateEntropy
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- Public forum : https://groups.google.com/forum/#!forum/lz4c
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****************************************************************** */
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#ifndef UTIL_H_MODULE
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#define UTIL_H_MODULE
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#if defined (__cplusplus)
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extern "C" {
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#endif
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/*-****************************************
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* Dependencies
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******************************************/
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/*-****************************************
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* Compiler specifics
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******************************************/
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#if defined(__GNUC__)
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# define UTIL_STATIC static __attribute__((unused))
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#elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
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# define UTIL_STATIC static inline
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#elif defined(_MSC_VER)
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# define UTIL_STATIC static __inline
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#else
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# define UTIL_STATIC static /* this version may generate warnings for unused static functions; disable the relevant warning */
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#endif
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/*-****************************************
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* Utility functions
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******************************************/
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UTIL_STATIC U64 UTIL_getFileSize(const char* infilename)
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{
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int r;
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#if defined(_MSC_VER)
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struct _stat64 statbuf;
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r = _stat64(infilename, &statbuf);
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if (r || !(statbuf.st_mode & S_IFREG)) return 0; /* No good... */
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#else
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struct stat statbuf;
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r = stat(infilename, &statbuf);
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if (r || !S_ISREG(statbuf.st_mode)) return 0; /* No good... */
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#endif
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return (U64)statbuf.st_size;
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}
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UTIL_STATIC U32 UTIL_isDirectory(const char* infilename)
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{
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int r;
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#if defined(_MSC_VER)
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struct _stat64 statbuf;
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r = _stat64(infilename, &statbuf);
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if (!r && (statbuf.st_mode & _S_IFDIR)) return 1;
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#else
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struct stat statbuf;
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r = stat(infilename, &statbuf);
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if (!r && S_ISDIR(statbuf.st_mode)) return 1;
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#endif
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return 0;
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}
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#if defined (__cplusplus)
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}
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#endif
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#endif /* UTIL_H_MODULE */
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