WebSVN – planix.SVN – Blame – /os/branches/feature-vt/sys/src/ape/cmd/diff/system.h

Rev	Author	Line No.	Line
2	-	1	`/* System dependent declarations.`
		2	`Copyright (C) 1988, 1989, 1992, 1993, 1994 Free Software Foundation, Inc.`
		3
		4	`This file is part of GNU DIFF.`
		5
		6	`GNU DIFF is free software; you can redistribute it and/or modify`
		7	`it under the terms of the GNU General Public License as published by`
		8	`the Free Software Foundation; either version 2, or (at your option)`
		9	`any later version.`
		10
		11	`GNU DIFF is distributed in the hope that it will be useful,`
		12	`but WITHOUT ANY WARRANTY; without even the implied warranty of`
		13	`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
		14	`GNU General Public License for more details.`
		15
		16	`You should have received a copy of the GNU General Public License`
		17	`along with GNU DIFF; see the file COPYING. If not, write to`
		18	`the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */`
		19
		20	/* We must define `volatile' and `const' first (the latter inside config.h),
		21	`so that they're used consistently in all system includes. */`
		22	`#if !__STDC__`
		23	`#ifndef volatile`
		24	`#define volatile`
		25	`#endif`
		26	`#endif`
		27	`#include <config.h>`
		28
		29	`#include <sys/types.h>`
		30	`#include <sys/stat.h>`
		31
		32	`#if __STDC__`
		33	`#define PARAMS(args) args`
		34	`#define VOID void`
		35	`#else`
		36	`#define PARAMS(args) ()`
		37	`#define VOID char`
		38	`#endif`
		39
		40	`#if STAT_MACROS_BROKEN`
		41	`#undef S_ISBLK`
		42	`#undef S_ISCHR`
		43	`#undef S_ISDIR`
		44	`#undef S_ISFIFO`
		45	`#undef S_ISREG`
		46	`#undef S_ISSOCK`
		47	`#endif`
		48	`#ifndef S_ISDIR`
		49	`#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)`
		50	`#endif`
		51	`#ifndef S_ISREG`
		52	`#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)`
		53	`#endif`
		54	`#if !defined(S_ISBLK) && defined(S_IFBLK)`
		55	`#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)`
		56	`#endif`
		57	`#if !defined(S_ISCHR) && defined(S_IFCHR)`
		58	`#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)`
		59	`#endif`
		60	`#if !defined(S_ISFIFO) && defined(S_IFFIFO)`
		61	`#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFFIFO)`
		62	`#endif`
		63	`#if !defined(S_ISSOCK) && defined(S_IFSOCK)`
		64	`#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)`
		65	`#endif`
		66
		67	`#if HAVE_UNISTD_H`
		68	`#include <unistd.h>`
		69	`#endif`
		70
		71	`#ifndef SEEK_SET`
		72	`#define SEEK_SET 0`
		73	`#endif`
		74	`#ifndef SEEK_CUR`
		75	`#define SEEK_CUR 1`
		76	`#endif`
		77
		78	`#ifndef STDIN_FILENO`
		79	`#define STDIN_FILENO 0`
		80	`#endif`
		81	`#ifndef STDOUT_FILENO`
		82	`#define STDOUT_FILENO 1`
		83	`#endif`
		84	`#ifndef STDERR_FILENO`
		85	`#define STDERR_FILENO 2`
		86	`#endif`
		87
		88	`#if HAVE_TIME_H`
		89	`#include <time.h>`
		90	`#else`
		91	`#include <sys/time.h>`
		92	`#endif`
		93
		94	`#if HAVE_FCNTL_H`
		95	`#include <fcntl.h>`
		96	`#else`
		97	`#if HAVE_SYS_FILE_H`
		98	`#include <sys/file.h>`
		99	`#endif`
		100	`#endif`
		101
		102	`#if !HAVE_DUP2`
		103	`#define dup2(f,t) (close (t), fcntl (f,F_DUPFD,t))`
		104	`#endif`
		105
		106	`#ifndef O_RDONLY`
		107	`#define O_RDONLY 0`
		108	`#endif`
		109
		110	`#if HAVE_SYS_WAIT_H`
		111	`#include <sys/wait.h>`
		112	`#endif`
		113	`#ifndef WEXITSTATUS`
		114	`#define WEXITSTATUS(stat_val) ((unsigned) (stat_val) >> 8)`
		115	`#endif`
		116	`#ifndef WIFEXITED`
		117	`#define WIFEXITED(stat_val) (((stat_val) & 255) == 0)`
		118	`#endif`
		119
		120	`#ifndef STAT_BLOCKSIZE`
		121	`#if HAVE_ST_BLKSIZE`
		122	`#define STAT_BLOCKSIZE(s) (s).st_blksize`
		123	`#else`
		124	`#define STAT_BLOCKSIZE(s) (8 * 1024)`
		125	`#endif`
		126	`#endif`
		127
		128	`#if HAVE_DIRENT_H`
		129	`# include <dirent.h>`
		130	`# define NAMLEN(dirent) strlen((dirent)->d_name)`
		131	`#else`
		132	`# define dirent direct`
		133	`# define NAMLEN(dirent) ((dirent)->d_namlen)`
		134	`# if HAVE_SYS_NDIR_H`
		135	`# include <sys/ndir.h>`
		136	`# endif`
		137	`# if HAVE_SYS_DIR_H`
		138	`# include <sys/dir.h>`
		139	`# endif`
		140	`# if HAVE_NDIR_H`
		141	`# include <ndir.h>`
		142	`# endif`
		143	`#endif`
		144
		145	`#if HAVE_VFORK_H`
		146	`#include <vfork.h>`
		147	`#endif`
		148
		149	`#if HAVE_STDLIB_H`
		150	`#include <stdlib.h>`
		151	`#else`
		152	`VOID *malloc ();`
		153	`VOID *realloc ();`
		154	`#endif`
		155	`#ifndef getenv`
		156	`char *getenv ();`
		157	`#endif`
		158
		159	`#if HAVE_LIMITS_H`
		160	`#include <limits.h>`
		161	`#endif`
		162	`#ifndef INT_MAX`
		163	`#define INT_MAX 2147483647`
		164	`#endif`
		165	`#ifndef CHAR_BIT`
		166	`#define CHAR_BIT 8`
		167	`#endif`
		168
		169	`#if STDC_HEADERS \|\| HAVE_STRING_H`
		170	`# include <string.h>`
		171	`# ifndef bzero`
		172	`# define bzero(s, n) memset (s, 0, n)`
		173	`# endif`
		174	`#else`
		175	`# if !HAVE_STRCHR`
		176	`# define strchr index`
		177	`# define strrchr rindex`
		178	`# endif`
		179	`char strchr (), strrchr ();`
		180	`# if !HAVE_MEMCHR`
		181	`# define memcmp(s1, s2, n) bcmp (s1, s2, n)`
		182	`# define memcpy(d, s, n) bcopy (s, d, n)`
		183	`void *memchr ();`
		184	`# endif`
		185	`#endif`
		186
		187	`#include <ctype.h>`
		188	`/* CTYPE_DOMAIN (C) is nonzero if the unsigned char C can safely be given`
		189	as an argument to <ctype.h> macros like `isspace'. */
		190	`#if STDC_HEADERS`
		191	`#define CTYPE_DOMAIN(c) 1`
		192	`#else`
		193	`#define CTYPE_DOMAIN(c) ((unsigned) (c) <= 0177)`
		194	`#endif`
		195	`#ifndef ISPRINT`
		196	`#define ISPRINT(c) (CTYPE_DOMAIN (c) && isprint (c))`
		197	`#endif`
		198	`#ifndef ISSPACE`
		199	`#define ISSPACE(c) (CTYPE_DOMAIN (c) && isspace (c))`
		200	`#endif`
		201	`#ifndef ISUPPER`
		202	`#define ISUPPER(c) (CTYPE_DOMAIN (c) && isupper (c))`
		203	`#endif`
		204
		205	`#ifndef ISDIGIT`
		206	`#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)`
		207	`#endif`
		208
		209	`#include <errno.h>`
		210	`#if !STDC_HEADERS`
		211	`extern int errno;`
		212	`#endif`
		213
		214	`#ifdef min`
		215	`#undef min`
		216	`#endif`
		217	`#ifdef max`
		218	`#undef max`
		219	`#endif`
		220	`#define min(a,b) ((a) <= (b) ? (a) : (b))`
		221	`#define max(a,b) ((a) >= (b) ? (a) : (b))`
		222
		223	`/* This section contains Posix-compliant defaults for macros`
		224	`that are meant to be overridden by hand in config.h as needed. */`
		225
		226	`#ifndef filename_cmp`
		227	`#define filename_cmp(a, b) strcmp (a, b)`
		228	`#endif`
		229
		230	`#ifndef filename_lastdirchar`
		231	`#define filename_lastdirchar(filename) strrchr (filename, '/')`
		232	`#endif`
		233
		234	`#ifndef HAVE_FORK`
		235	`#define HAVE_FORK 1`
		236	`#endif`
		237
		238	`#ifndef HAVE_SETMODE`
		239	`#define HAVE_SETMODE 0`
		240	`#endif`
		241
		242	`#ifndef initialize_main`
		243	`#define initialize_main(argcp, argvp)`
		244	`#endif`
		245
		246	`/* Do struct stat S, T describe the same file? Answer -1 if unknown. */`
		247	`#ifndef same_file`
		248	`/* #define same_file(s,t) ((s)->st_ino==(t)->st_ino && (s)->st_dev==(t)->st_dev) */`
		249	`#define same_file(s,t) 0`
		250	`#endif`
		251
		252	/* Place into Q a quoted version of A suitable for `popen' or `system',
		253	`incrementing Q and junking A.`
		254	`Do not increment Q by more than 4 * strlen (A) + 2. */`
		255	`#ifndef SYSTEM_QUOTE_ARG`
		256	`#define SYSTEM_QUOTE_ARG(q, a) \`
		257	`{ \`
		258	`*(q)++ = '\''; \`
		259	`for (; (a); (q)++ = *(a)++) \`
		260	`if (*(a) == '\'') \`
		261	`{ \`
		262	`*(q)++ = '\''; \`
		263	`*(q)++ = '\\'; \`
		264	`*(q)++ = '\''; \`
		265	`} \`
		266	`*(q)++ = '\''; \`
		267	`}`
		268	`#endif`
		269	`#ifndef FOLD_FN_CHAR`
		270	`#define FOLD_FN_CHAR(c) (c)`
		271	`#define fnfold(filename) (filename)`
		272	`#define fncmp strcmp`
		273	`#endif`

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