view src/broken-sun.h @ 4407:4ee73bbe4f8e

Always use boyer_moore in ASCII or Latin-1 buffers with ASCII search strings. 2007-12-26 Aidan Kehoe <kehoea@parhasard.net> * casetab.c: Extend and correct some case table documentation. * search.c (search_buffer): Correct a bug where only the first entry for a character in the case equivalence table was examined in determining if the Boyer-Moore search algorithm is appropriate. If there are case mappings outside of the charset and row of the characters specified in the search string, those case mappings can be safely ignored (and Boyer-Moore search can be used) if we know from the buffer statistics that the corresponding characters cannot occur. * search.c (boyer_moore): Assert that we haven't been passed a string with varying characters sets or rows within character sets. That's what simple_search is for. In the very rare event that a character in the search string has a canonical case mapping that is not in the same character set and row, don't try to search for the canonical character, search for some other character that is in the the desired character set and row. Assert that the case table isn't corrupt. Do not search for any character case mappings that cannot possibly occur in the buffer, given the buffer metadata about its contents.
author Aidan Kehoe <kehoea@parhasard.net>
date Wed, 26 Dec 2007 17:30:16 +0100
parents c3cf7db99b98
children
line wrap: on
line source

/* This file is part of XEmacs.

XEmacs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: Not in FSF. */

/* Authorship:

   JWZ: long ago.
 */

/* Sun's standard and GCC's header files leave out prototypes for
   all sorts of functions. */

#ifndef INCLUDED_broken_sun_h_
#define INCLUDED_broken_sun_h_

#ifdef __GNUC__
#include <stdlib.h>
#include <stddef.h>

/*********************** stdlib functions *********************/

/* void *	memchr (const void *, int, size_t); */

/* int	memcmp (const void *, const void *, size_t); */
/* void *	memcpy (void *, const void *, size_t); */
/* void *	memmove (void *, const void *, size_t);*/
/* void *	memset (void *, int, int); */
/* char *	strcat (char *, const char *); */
/* char *	strchr (const char *, int); */
/* int	strcmp (const char *, const char *); */

/* Yes, they even left these functions out! */
int      tolower (int);
int      toupper (int);

/*********************** stdio functions *********************/

#include <stdio.h> /* else can't declare FILE */

/* FILE	*fopen (const char *, const char *); */
/* FILE	*freopen (const char *, const char *, FILE *); */
FILE	*tmpfile (void);
int	fclose (FILE *);
char	*fgets (char *, int, FILE *);
int      fgetc (FILE *);
int      fflush (FILE *);
int      fprintf (FILE *, const char *, ...);
int      fputc (char, FILE *);
int      fputs (const char *, FILE *);
size_t   fread (void *, size_t, size_t, FILE *);
int      fscanf (FILE *, const char *, ...);
int	fgetpos (FILE *, long *);
int      fseek (FILE *, long, int);
int	fsetpos (FILE *, const long *);
long     ftell (FILE *);
size_t   fwrite (const void *, size_t, size_t, FILE *);
char	*gets (char *);
int	pclose (FILE *);
void     perror (const char *);
int      printf (const char *, ...);
int      puts (const char *);
int      remove (const char *);
int      rename (const char *, const char *);
int      rewind (FILE *);
int	scanf (const char *, ...);
int	sscanf (const char *, const char *, ...);
void 	setbuf (FILE *, char *);
int 	setvbuf (FILE *, char *, int, size_t);
int	ungetc (int, FILE *);
int	vprintf (const char *, void *);
int	vfprintf (FILE *, const char *, void *);
char	*vsprintf (char *, const char *, void *);

/*********************** signal functions *********************/

int	sigblock (int);
#ifndef sigmask
int	sigmask (int);
#endif
int	sigsetmask (int);
int	sigpause (int);

/*********************** time functions ***********************/

struct timeval;
struct timezone;

int	utimes (const char *, struct timeval *);
void	tzset (void);
time_t	time (time_t *);
int	gettimeofday (struct timeval *, struct timezone *);

/*********************** file-system functions *********************/

/* Ilya Golubev reports that stat can be a #define on some systems.
   Presumably none of the systems this file is used for, and I don't
   know what file to include on a system known to be broken, anyway. */
struct stat;
#include </usr/include/sys/types.h>

int	fsync (int);
int	lstat (const char *, struct stat *);
int	fchmod (int, mode_t);
char	*mktemp (char *);
/* int	creat (const char *, mode_t); better no decl than a conflicting one... */
int	symlink (const char *, const char *);
int	readlink (const char *, char *, int);
void	sync (void);
int	select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
char *	getwd (char *);
/* int	lseek (int, long, int); better no decl than a conflicting one... */
int	_filbuf ();
int	_flsbuf ();

/**************** interprocess communication functions ******************/

int	recv (int, char *, int, int);
int	socket (int, int, int);
struct sockaddr;
int	connect (int, struct sockaddr *, int);
int	bind (int, struct sockaddr *, int);
int	listen (int, int);
int	accept (int, struct sockaddr *, int *);
int	gethostname (char *, int);
struct rusage;
int	wait3 (void *, int, struct rusage *);
int	nice (int);
int	killpg (int, int);
int	system (char *);


/*********************** low-level OS functions *********************/

int	ioctl (int, int, ...);
struct nlist;
int	nlist (const char *, struct nlist *);
int	munmap (void *, int);
int	brk (void *);
void *	sbrk (int);
struct rlimit;
int	getrlimit (int, struct rlimit *);
int	getpagesize (void);
int	shutdown (int, int);
int	mprotect (void *, int, int);

/*********************** miscellaneous functions *********************/

void	tputs (const char *cp, int affcnt, void (*)(int));
long	random (void);
int	srandom (int seed);

#endif /* __GNUC__ */

#endif /* INCLUDED_broken_sun_h_ */