146 lines
3.1 KiB
C
146 lines
3.1 KiB
C
/*
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* jinclude.h
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*
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* This file was part of the Independent JPEG Group's software:
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* Copyright (C) 1991-1994, Thomas G. Lane.
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* libjpeg-turbo Modifications:
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* Copyright (C) 2022, D. R. Commander.
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* For conditions of distribution and use, see the accompanying README.ijg
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* file.
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*
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* This file exists to provide a single place to fix any problems with
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* including the wrong system include files. (Common problems are taken
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* care of by the standard jconfig symbols, but on really weird systems
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* you may have to edit this file.)
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*
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* NOTE: this file is NOT intended to be included by applications using the
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* JPEG library. Most applications need only include jpeglib.h.
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*/
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#ifndef __JINCLUDE_H__
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#define __JINCLUDE_H__
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/* Include auto-config file to find out which system include files we need. */
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#include "jconfig.h" /* auto configuration options */
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#include "jconfigint.h"
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#define JCONFIG_INCLUDED /* so that jpeglib.h doesn't do it again */
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/*
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* Note that the core JPEG library does not require <stdio.h>;
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* only the default error handler and data source/destination modules do.
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* But we must pull it in because of the references to FILE in jpeglib.h.
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* You can remove those references if you want to compile without <stdio.h>.
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*/
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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/*
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* These macros/inline functions facilitate using Microsoft's "safe string"
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* functions with Visual Studio builds without the need to scatter #ifdefs
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* throughout the code base.
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*/
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#ifdef _MSC_VER
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#define SNPRINTF(str, n, format, ...) \
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_snprintf_s(str, n, _TRUNCATE, format, ##__VA_ARGS__)
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#else
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#define SNPRINTF snprintf
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#endif
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#ifndef NO_GETENV
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#ifdef _MSC_VER
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static INLINE int GETENV_S(char *buffer, size_t buffer_size, const char *name)
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{
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size_t required_size;
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return (int)getenv_s(&required_size, buffer, buffer_size, name);
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}
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#else /* _MSC_VER */
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#include <errno.h>
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/* This provides a similar interface to the Microsoft/C11 getenv_s() function,
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* but other than parameter validation, it has no advantages over getenv().
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*/
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static INLINE int GETENV_S(char *buffer, size_t buffer_size, const char *name)
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{
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char *env;
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if (!buffer) {
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if (buffer_size == 0)
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return 0;
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else
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return (errno = EINVAL);
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}
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if (buffer_size == 0)
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return (errno = EINVAL);
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if (!name) {
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*buffer = 0;
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return 0;
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}
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env = getenv(name);
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if (!env)
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{
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*buffer = 0;
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return 0;
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}
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if (strlen(env) + 1 > buffer_size) {
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*buffer = 0;
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return ERANGE;
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}
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strncpy(buffer, env, buffer_size);
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return 0;
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}
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#endif /* _MSC_VER */
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#endif /* NO_GETENV */
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#ifndef NO_PUTENV
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#ifdef _WIN32
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#define PUTENV_S(name, value) _putenv_s(name, value)
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#else
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/* This provides a similar interface to the Microsoft _putenv_s() function, but
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* other than parameter validation, it has no advantages over setenv().
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*/
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static INLINE int PUTENV_S(const char *name, const char *value)
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{
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if (!name || !value)
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return (errno = EINVAL);
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setenv(name, value, 1);
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return errno;
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}
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#endif /* _WIN32 */
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#endif /* NO_PUTENV */
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#endif /* JINCLUDE_H */
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