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/* Construct a regular expression from a literal string.
Copyright (C) 1995, 2010-2011 Free Software Foundation, Inc.
Written by Bruno Haible <haible@clisp.cons.org>, 2010.
This program 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 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stddef.h>
/* regex_quote converts a literal string to a regular expression that will
look for this literal string.
cflags can be 0 or REG_EXTENDED.
If it is 0, the result is a Basic Regular Expression (BRE)
<http://www.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_03>.
If it is REG_EXTENDED, the result is an Extended Regular Expression (ERE)
<http://www.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04>.
The result is not anchored; if you want it to match only complete lines,
you need to add "^" at the beginning of the result and "$" at the end of the
result.
*/
/* Returns the number of bytes needed for the quoted string. */
extern size_t regex_quote_length (const char *string, int cflags);
/* Copies the quoted string to p and returns the incremented p.
There must be room for regex_quote_length (string, cflags) + 1 bytes at p.
*/
extern char * regex_quote_copy (char *p, const char *string, int cflags);
/* Returns the freshly allocated quoted string. */
extern char * regex_quote (const char *string, int cflags);
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