arc-linux-uclibc/usr/include/regexp.h - toolchains/skids - Git at Google

 /* Copyright (C) 1996, 1997, 1998, 1999, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.

    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    The GNU C Library 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
    Lesser General Public License for more details.

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

 #ifndef _REGEXP_H
 #define _REGEXP_H	1

 /* The contents of this header file was first standardized in X/Open
    System Interface and Headers Issue 2, originally coming from SysV.
    In issue 4, version 2, it is marked as TO BE WITDRAWN, and it has
    been withdrawn in SUSv3.

    This code shouldn't be used in any newly written code.  It is
    included only for compatibility reasons.  Use the POSIX definition
    in <regex.h> for portable applications and a reasonable interface.  */

 #include <features.h>
 #include <alloca.h>
 #include <regex.h>
 #include <stdlib.h>
 #include <string.h>

 /* The implementation provided here emulates the needed functionality
    by mapping to the POSIX regular expression matcher.  The interface
    for the here included function is weird (this really is a harmless
    word).

    The user has to provide six macros before this header file can be
    included:

    INIT		Declarations vor variables which can be used by the
 		other macros.

    GETC()	Return the value of the next character in the regular
 		expression pattern.  Successive calls should return
 		successive characters.

    PEEKC()	Return the value of the next character in the regular
 		expression pattern.  Immediately successive calls to
 		PEEKC() should return the same character which should
 		also be the next character returned by GETC().

    UNGETC(c)	Cause `c' to be returned by the next call to GETC() and
 		PEEKC().

    RETURN(ptr)	Used for normal exit of the `compile' function.  `ptr'
 		is a pointer to the character after the last character of
 		the compiled regular expression.

    ERROR(val)	Used for abnormal return from `compile'.  `val' is the
 		error number.  The error codes are:
 		11	Range endpoint too large.
 		16	Bad number.
 		25	\digit out of range.
 		36	Illegal or missing delimiter.
 		41	No remembered search string.
 		42	\( \) imbalance.
 		43	Too many \(.
 		44	More tan two numbers given in \{ \}.
 		45	} expected after \.
 		46	First number exceeds second in \{ \}.
 		49	[ ] imbalance.
 		50	Regular expression overflow.

   */

 __BEGIN_DECLS

 /* Interface variables.  They contain the results of the successful
    calls to `setp' and `advance'.  */
 extern char *loc1;
 extern char *loc2;

 /* The use of this variable in the `advance' function is not
    supported.  */
 extern char *locs;


 #ifndef __DO_NOT_DEFINE_COMPILE
 /* Get and compile the user supplied pattern up to end of line or
    string or until EOF is seen, whatever happens first.  The result is
    placed in the buffer starting at EXPBUF and delimited by ENDBUF.

    This function cannot be defined in the libc itself since it depends
    on the macros.  */
 char *
 compile (char *__restrict instring, char *__restrict expbuf,
 	 __const char *__restrict endbuf, int eof)
 {
   char *__input_buffer = NULL;
   size_t __input_size = 0;
   size_t __current_size = 0;
   int __ch;
   int __error;
   INIT

   /* Align the expression buffer according to the needs for an object
      of type `regex_t'.  Then check for minimum size of the buffer for
      the compiled regular expression.  */
   regex_t *__expr_ptr;
 # if defined __GNUC__ && __GNUC__ >= 2
   const size_t __req = __alignof__ (regex_t *);
 # else
   /* How shall we find out?  We simply guess it and can change it is
      this really proofs to be wrong.  */
   const size_t __req = 8;
 # endif
   expbuf += __req;
   expbuf -= (expbuf - ((char *) 0)) % __req;
   if (endbuf < expbuf + sizeof (regex_t))
     {
       ERROR (50);
     }
   __expr_ptr = (regex_t *) expbuf;
   /* The remaining space in the buffer can be used for the compiled
      pattern.  */
   __expr_ptr->buffer = expbuf + sizeof (regex_t);
   __expr_ptr->allocated = endbuf -  (char *) __expr_ptr->buffer;

   while ((__ch = (GETC ())) != eof)
     {
       if (__ch == '\0' || __ch == '\n')
 	{
 	  UNGETC (__ch);
 	  break;
 	}

       if (__current_size + 1 >= __input_size)
 	{
 	  size_t __new_size = __input_size ? 2 * __input_size : 128;
 	  char *__new_room = (char *) alloca (__new_size);
 	  /* See whether we can use the old buffer.  */
 	  if (__new_room + __new_size == __input_buffer)
 	    {
 	      __input_size += __new_size;
 	      __input_buffer = (char *) memcpy (__new_room, __input_buffer,
 					       __current_size);
 	    }
 	  else if (__input_buffer + __input_size == __new_room)
 	    __input_size += __new_size;
 	  else
 	    {
 	      __input_size = __new_size;
 	      __input_buffer = (char *) memcpy (__new_room, __input_buffer,
 						__current_size);
 	    }
 	}
       __input_buffer[__current_size++] = __ch;
     }
   __input_buffer[__current_size++] = '\0';

   /* Now compile the pattern.  */
   __error = regcomp (__expr_ptr, __input_buffer, REG_NEWLINE);
   if (__error != 0)
     /* Oh well, we have to translate POSIX error codes.  */
     switch (__error)
       {
       case REG_BADPAT:
       case REG_ECOLLATE:
       case REG_ECTYPE:
       case REG_EESCAPE:
       case REG_BADRPT:
       case REG_EEND:
       case REG_ERPAREN:
       default:
 	/* There is no matching error code.  */
 	RETURN (36);
       case REG_ESUBREG:
 	RETURN (25);
       case REG_EBRACK:
 	RETURN (49);
       case REG_EPAREN:
 	RETURN (42);
       case REG_EBRACE:
 	RETURN (44);
       case REG_BADBR:
 	RETURN (46);
       case REG_ERANGE:
 	RETURN (11);
       case REG_ESPACE:
       case REG_ESIZE:
 	ERROR (50);
       }

   /* Everything is ok.  */
   RETURN ((char *) (__expr_ptr->buffer + __expr_ptr->used));
 }
 #endif


 /* Find the next match in STRING.  The compiled regular expression is
    found in the buffer starting at EXPBUF.  `loc1' will return the
    first character matched and `loc2' points to the next unmatched
    character.  */
 extern int step (__const char *__restrict __string,
 		 __const char *__restrict __expbuf) __THROW;

 /* Match the beginning of STRING with the compiled regular expression
    in EXPBUF.  If the match is successful `loc2' will contain the
    position of the first unmatched character.  */
 extern int advance (__const char *__restrict __string,
 		    __const char *__restrict __expbuf) __THROW;


 __END_DECLS

 #endif /* regexp.h */
	/* Copyright (C) 1996, 1997, 1998, 1999, 2004 Free Software Foundation, Inc.
	This file is part of the GNU C Library.
	Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.

	The GNU C Library is free software; you can redistribute it and/or
	modify it under the terms of the GNU Lesser General Public
	License as published by the Free Software Foundation; either
	version 2.1 of the License, or (at your option) any later version.

	The GNU C Library 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
	Lesser General Public License for more details.

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

	#ifndef _REGEXP_H
	#define _REGEXP_H 1

	/* The contents of this header file was first standardized in X/Open
	System Interface and Headers Issue 2, originally coming from SysV.
	In issue 4, version 2, it is marked as TO BE WITDRAWN, and it has
	been withdrawn in SUSv3.

	This code shouldn't be used in any newly written code. It is
	included only for compatibility reasons. Use the POSIX definition
	in <regex.h> for portable applications and a reasonable interface. */

	#include <features.h>
	#include <alloca.h>
	#include <regex.h>
	#include <stdlib.h>
	#include <string.h>

	/* The implementation provided here emulates the needed functionality
	by mapping to the POSIX regular expression matcher. The interface
	for the here included function is weird (this really is a harmless
	word).

	The user has to provide six macros before this header file can be
	included:

	INIT Declarations vor variables which can be used by the
	other macros.

	GETC() Return the value of the next character in the regular
	expression pattern. Successive calls should return
	successive characters.

	PEEKC() Return the value of the next character in the regular
	expression pattern. Immediately successive calls to
	PEEKC() should return the same character which should
	also be the next character returned by GETC().

	UNGETC(c) Cause `c' to be returned by the next call to GETC() and
	PEEKC().

	RETURN(ptr) Used for normal exit of the `compile' function. `ptr'
	is a pointer to the character after the last character of
	the compiled regular expression.

	ERROR(val) Used for abnormal return from `compile'. `val' is the
	error number. The error codes are:
	11 Range endpoint too large.
	16 Bad number.
	25 \digit out of range.
	36 Illegal or missing delimiter.
	41 No remembered search string.
	42 \( \) imbalance.
	43 Too many \(.
	44 More tan two numbers given in \{ \}.
	45 } expected after \.
	46 First number exceeds second in \{ \}.
	49 [ ] imbalance.
	50 Regular expression overflow.

	*/

	__BEGIN_DECLS

	/* Interface variables. They contain the results of the successful
	calls to `setp' and `advance'. */
	extern char *loc1;
	extern char *loc2;

	/* The use of this variable in the `advance' function is not
	supported. */
	extern char *locs;


	#ifndef __DO_NOT_DEFINE_COMPILE
	/* Get and compile the user supplied pattern up to end of line or
	string or until EOF is seen, whatever happens first. The result is
	placed in the buffer starting at EXPBUF and delimited by ENDBUF.

	This function cannot be defined in the libc itself since it depends
	on the macros. */
	char *
	compile (char __restrict instring, char __restrict expbuf,
	__const char *__restrict endbuf, int eof)
	{
	char *__input_buffer = NULL;
	size_t __input_size = 0;
	size_t __current_size = 0;
	int __ch;
	int __error;
	INIT

	/* Align the expression buffer according to the needs for an object
	of type `regex_t'. Then check for minimum size of the buffer for
	the compiled regular expression. */
	regex_t *__expr_ptr;
	# if defined __GNUC__ && __GNUC__ >= 2
	const size_t __req = __alignof__ (regex_t *);
	# else
	/* How shall we find out? We simply guess it and can change it is
	this really proofs to be wrong. */
	const size_t __req = 8;
	# endif
	expbuf += __req;
	expbuf -= (expbuf - ((char *) 0)) % __req;
	if (endbuf < expbuf + sizeof (regex_t))
	{
	ERROR (50);
	}
	__expr_ptr = (regex_t *) expbuf;
	/* The remaining space in the buffer can be used for the compiled
	pattern. */
	__expr_ptr->buffer = expbuf + sizeof (regex_t);
	__expr_ptr->allocated = endbuf - (char *) __expr_ptr->buffer;

	while ((__ch = (GETC ())) != eof)
	{
	if (__ch == '\0' \|\| __ch == '\n')
	{
	UNGETC (__ch);
	break;
	}

	if (__current_size + 1 >= __input_size)
	{
	size_t __new_size = __input_size ? 2 * __input_size : 128;
	char __new_room = (char ) alloca (__new_size);
	/* See whether we can use the old buffer. */
	if (__new_room + __new_size == __input_buffer)
	{
	__input_size += __new_size;
	__input_buffer = (char *) memcpy (__new_room, __input_buffer,
	__current_size);
	}
	else if (__input_buffer + __input_size == __new_room)
	__input_size += __new_size;
	else
	{
	__input_size = __new_size;
	__input_buffer = (char *) memcpy (__new_room, __input_buffer,
	__current_size);
	}
	}
	__input_buffer[__current_size++] = __ch;
	}
	__input_buffer[__current_size++] = '\0';

	/* Now compile the pattern. */
	__error = regcomp (__expr_ptr, __input_buffer, REG_NEWLINE);
	if (__error != 0)
	/* Oh well, we have to translate POSIX error codes. */
	switch (__error)
	{
	case REG_BADPAT:
	case REG_ECOLLATE:
	case REG_ECTYPE:
	case REG_EESCAPE:
	case REG_BADRPT:
	case REG_EEND:
	case REG_ERPAREN:
	default:
	/* There is no matching error code. */
	RETURN (36);
	case REG_ESUBREG:
	RETURN (25);
	case REG_EBRACK:
	RETURN (49);
	case REG_EPAREN:
	RETURN (42);
	case REG_EBRACE:
	RETURN (44);
	case REG_BADBR:
	RETURN (46);
	case REG_ERANGE:
	RETURN (11);
	case REG_ESPACE:
	case REG_ESIZE:
	ERROR (50);
	}

	/* Everything is ok. */
	RETURN ((char *) (__expr_ptr->buffer + __expr_ptr->used));
	}
	#endif


	/* Find the next match in STRING. The compiled regular expression is
	found in the buffer starting at EXPBUF. `loc1' will return the
	first character matched and `loc2' points to the next unmatched
	character. */
	extern int step (__const char *__restrict __string,
	__const char *__restrict __expbuf) __THROW;

	/* Match the beginning of STRING with the compiled regular expression
	in EXPBUF. If the match is successful `loc2' will contain the
	position of the first unmatched character. */
	extern int advance (__const char *__restrict __string,
	__const char *__restrict __expbuf) __THROW;


	__END_DECLS

	#endif /* regexp.h */