94 lines
3.8 KiB
C
94 lines
3.8 KiB
C
/*************************************************
|
|
* Perl-Compatible Regular Expressions *
|
|
*************************************************/
|
|
|
|
/* PCRE is a library of functions to support regular expressions whose syntax
|
|
and semantics are as close as possible to those of the Perl 5 language.
|
|
|
|
Written by Philip Hazel
|
|
Copyright (c) 1997-2009 University of Cambridge
|
|
|
|
-----------------------------------------------------------------------------
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
* Neither the name of the University of Cambridge nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
-----------------------------------------------------------------------------
|
|
*/
|
|
|
|
|
|
/* This module contains the external function pcre_info(), which gives some
|
|
information about a compiled pattern. However, use of this function is now
|
|
deprecated, as it has been superseded by pcre_fullinfo(). */
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "pcre_internal.h"
|
|
|
|
|
|
/*************************************************
|
|
* (Obsolete) Return info about compiled pattern *
|
|
*************************************************/
|
|
|
|
/* This is the original "info" function. It picks potentially useful data out
|
|
of the private structure, but its interface was too rigid. It remains for
|
|
backwards compatibility. The public options are passed back in an int - though
|
|
the re->options field has been expanded to a long int, all the public options
|
|
at the low end of it, and so even on 16-bit systems this will still be OK.
|
|
Therefore, I haven't changed the API for pcre_info().
|
|
|
|
Arguments:
|
|
argument_re points to compiled code
|
|
optptr where to pass back the options
|
|
first_byte where to pass back the first character,
|
|
or -1 if multiline and all branches start ^,
|
|
or -2 otherwise
|
|
|
|
Returns: number of capturing subpatterns
|
|
or negative values on error
|
|
*/
|
|
|
|
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
|
|
pcre_info(const pcre *argument_re, int *optptr, int *first_byte)
|
|
{
|
|
real_pcre internal_re;
|
|
const real_pcre *re = (const real_pcre *)argument_re;
|
|
if (re == NULL) return PCRE_ERROR_NULL;
|
|
if (re->magic_number != MAGIC_NUMBER)
|
|
{
|
|
re = _pcre_try_flipped(re, &internal_re, NULL, NULL);
|
|
if (re == NULL) return PCRE_ERROR_BADMAGIC;
|
|
}
|
|
if (optptr != NULL) *optptr = (int)(re->options & PUBLIC_COMPILE_OPTIONS);
|
|
if (first_byte != NULL)
|
|
*first_byte = ((re->flags & PCRE_FIRSTSET) != 0)? re->first_byte :
|
|
((re->flags & PCRE_STARTLINE) != 0)? -1 : -2;
|
|
return re->top_bracket;
|
|
}
|
|
|
|
/* End of pcre_info.c */
|