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/*
* Copyright (C) 1996-2025 The Squid Software Foundation and contributors
*
* Squid software is distributed under GPLv2+ license and includes
* contributions from numerous individuals and organizations.
* Please see the COPYING and CONTRIBUTORS files for details.
*/
#ifndef SQUID_COMPAT_STDIO_H
#define SQUID_COMPAT_STDIO_H
/** 64-bit broken <cstdio>
*
* <stdio.h> provides fgetpos64, fopen64 if __USE_FILE_OFFSET64 is defined.
* It then checks whether a gcc-specific __REDIRECT macro is available
* (defined in <sys/cdefs.h>, depending on __GNUC__ begin available).
* If it is not available, it does a preprocessor #define.
* Which <cstdio> undefines, with this comment:
* "// Get rid of those macros defined in <stdio.h> in lieu of real functions.".
* When it does a namespace redirection ("namespace std { using ::fgetpos; }") it goes blam, as
* fgetpos64 is available, while fgetpos is not.
*/
// Import the stdio.h definitions first to do the state setup
#if HAVE_STDIO_H
#include <stdio.h>
#endif
// Check for the buggy case
#if defined(__USE_FILE_OFFSET64) && !defined(__REDIRECT)
// Define the problem functions as needed
#if defined(fgetpos)
#undef fgetpos
inline int fgetpos(FILE *f, fpos64_t *p) { return fgetpos64(f,p); }
#endif
#if defined(fopen)
#undef fopen
inline FILE * fopen(const char *f, const char *m) { return fopen64(f,m); }
#endif
#if defined(freopen)
#undef freopen
inline FILE * freopen(const char *f, const char *m, FILE *s) { return freopen64(f,m,s); }
#endif
#if defined(fsetpos)
#undef fsetpos
inline int fsetpos(FILE *f, fpos64_t *p) { return fsetpos64(f,p); }
#endif
#if defined(tmpfile)
#undef tmpfile
inline FILE * tmpfile(void) { return tmpfile64(); }
#endif
#endif /* __USE_FILE_OFFSET64 && !__REDIRECT */
// Finally import the <cstdio> stuff we actually use
#if defined(__cplusplus)
#include <cstdio>
#endif
#ifndef MAXPATHLEN
#define MAXPATHLEN SQUID_MAXPATHLEN
#endif
#endif /* SQUID_COMPAT_STDIO_H */
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