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