-/* Define function and variables for the obsolete <regexp.h> interface.
+/* Compatibility symbols for the obsolete <regexp.h> interface.
Copyright (C) 1996-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-/* We don't include regexp.h here because of the macros it requires, and
- because it now contains an unconditional #warning. */
+/* regexp.h now contains only an #error directive, so it cannot be
+ used in this file.
+
+ The function that would produce an 'expbuf' to use as the second
+ argument to 'step' and 'advance' was defined only in regexp.h,
+ as its definition depended on macros defined by the user. */
#include <regex.h>
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23)
/* Define the variables used for the interface. */
char *loc1;
char *loc2;
+compat_symbol (libc, loc1, loc1, GLIBC_2_0);
+compat_symbol (libc, loc2, loc2, GLIBC_2_0);
/* Although we do not support the use we define this variable as well. */
char *locs;
+compat_symbol (libc, locs, locs, GLIBC_2_0);
/* Find the next match in STRING. The compiled regular expression is
first character matched and `loc2' points to the next unmatched
character. */
int
-__step (const char *string, const char *expbuf)
+weak_function attribute_compat_text_section
+step (const char *string, const char *expbuf)
{
regmatch_t match; /* We only need info about the full match. */
loc2 = (char *) string + match.rm_eo;
return 1;
}
-weak_alias (__step, step)
+compat_symbol (libc, step, step, GLIBC_2_0);
/* 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. */
int
-__advance (const char *string, const char *expbuf)
+weak_function attribute_compat_text_section
+advance (const char *string, const char *expbuf)
{
regmatch_t match; /* We only need info about the full match. */
loc2 = (char *) string + match.rm_eo;
return 1;
}
-weak_alias (__advance, advance)
+compat_symbol (libc, advance, advance, GLIBC_2_0);
+
+
+#endif /* SHLIB_COMPAT (2.0, 2.23) */
were encouraged to use <regex.h> instead. It was officially
withdrawn from the standard in Issue 6 (aka POSIX.1-2001).
- This header is provided only for backward compatibility.
- It will be removed in the next release of the GNU C Library.
- New code should use <regex.h> instead. */
+ The GNU C Library provided this header through version 2.22. */
-#warning "<regexp.h> will be removed in the next release of the GNU C Library."
-#warning "Please update your code to use <regex.h> instead (no trailing 'p')."
-
-#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->__REPB_PREFIX (buffer) = expbuf + sizeof (regex_t);
- __expr_ptr->__REPB_PREFIX (allocated)
- = endbuf - (char *) __expr_ptr->__REPB_PREFIX (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;
- }
- if (__current_size)
- __input_buffer[__current_size++] = '\0';
- else
- __input_buffer = "";
-
- /* 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. */
- ERROR (36);
- case REG_ESUBREG:
- ERROR (25);
- case REG_EBRACK:
- ERROR (49);
- case REG_EPAREN:
- ERROR (42);
- case REG_EBRACE:
- ERROR (44);
- case REG_BADBR:
- ERROR (46);
- case REG_ERANGE:
- ERROR (11);
- case REG_ESPACE:
- case REG_ESIZE:
- ERROR (50);
- }
-
- /* Everything is ok. */
- RETURN ((char *) (__expr_ptr->__REPB_PREFIX (buffer)
- + __expr_ptr->__REPB_PREFIX (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
+#error "The GNU C Library no longer implements <regexp.h>."
+#error "Please update your code to use <regex.h> instead (no trailing 'p')."
#endif /* regexp.h */
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