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125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
/*
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compat: Some compatibility functions and header inclusions.
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Basic standard C stuff, that may barely be above/around C89.
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The mpg123 code is determined to keep it's legacy. A legacy of old, old UNIX.
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It is envisioned to include this compat header instead of any of the "standard" headers, to catch compatibility issues.
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So, don't include stdlib.h or string.h ... include compat.h.
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copyright 2007-8 by the mpg123 project - free software under the terms of the LGPL 2.1
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see COPYING and AUTHORS files in distribution or http://mpg123.org
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initially written by Thomas Orgis
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*/
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#ifndef MPG123_COMPAT_H
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#define MPG123_COMPAT_H
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#include "config.h"
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#ifdef HAVE_STDLIB_H
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/* realloc, size_t */
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#include <stdlib.h>
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#endif
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#include <stdio.h>
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#include <math.h>
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#else
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#ifdef HAVE_SYS_SIGNAL_H
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#include <sys/signal.h>
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#endif
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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/* Types, types, types. */
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/* Do we actually need these two in addition to sys/types.h? As replacement? */
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_INTTYPES_H
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#include <inttypes.h>
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#endif
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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/* We want SIZE_MAX, etc. */
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#ifdef HAVE_LIMITS_H
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#include <limits.h>
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#endif
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#ifndef SIZE_MAX
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#define SIZE_MAX ((size_t)-1)
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#endif
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#ifndef ULONG_MAX
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#define ULONG_MAX ((unsigned long)-1)
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef OS2
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#include <float.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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/* For select(), I need select.h according to POSIX 2001, else: sys/time.h sys/types.h unistd.h */
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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/* To parse big numbers... */
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#ifdef HAVE_ATOLL
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#define atobigint atoll
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#else
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#define atobigint atol
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#endif
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typedef unsigned char byte;
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/* A safe realloc also for very old systems where realloc(NULL, size) returns NULL. */
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void *safe_realloc(void *ptr, size_t size);
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#ifndef HAVE_STRERROR
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const char *strerror(int errnum);
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#endif
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#ifndef HAVE_STRDUP
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char *strdup(const char *s);
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#endif
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/* If we have the size checks enabled, try to derive some sane printfs.
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Simple start: Use max integer type and format if long is not big enough.
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I am hesitating to use %ll without making sure that it's there... */
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#if !(defined PLAIN_C89) && (defined SIZEOF_OFF_T) && (SIZEOF_OFF_T > SIZEOF_LONG) && (defined PRIiMAX)
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# define OFF_P PRIiMAX
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typedef intmax_t off_p;
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#else
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# define OFF_P "li"
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typedef long off_p;
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#endif
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#if !(defined PLAIN_C89) && (defined SIZEOF_SIZE_T) && (SIZEOF_SIZE_T > SIZEOF_LONG) && (defined PRIuMAX)
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# define SIZE_P PRIuMAX
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typedef uintmax_t size_p;
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#else
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# define SIZE_P "lu"
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typedef unsigned long size_p;
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#endif
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#if !(defined PLAIN_C89) && (defined SIZEOF_SSIZE_T) && (SIZEOF_SSIZE_T > SIZEOF_LONG) && (defined PRIiMAX)
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# define SSIZE_P PRIuMAX
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typedef intmax_t ssize_p;
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#else
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# define SSIZE_P "li"
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typedef long ssize_p;
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#endif
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#endif
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