Regex: Add PCRE 8.32 in tools directory.
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Arkshine
231
tools/pcre/pcre_fullinfo.c
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231
tools/pcre/pcre_fullinfo.c
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/*************************************************
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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) 1997-2012 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_fullinfo(), which returns
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information about a compiled pattern. */
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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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* Return info about compiled pattern *
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*************************************************/
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/* This is a newer "info" function which has an extensible interface so
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that additional items can be added compatibly.
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Arguments:
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argument_re points to compiled code
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extra_data points extra data, or NULL
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what what information is required
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where where to put the information
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Returns: 0 if data returned, negative on error
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*/
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#if defined COMPILE_PCRE8
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PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
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pcre_fullinfo(const pcre *argument_re, const pcre_extra *extra_data,
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int what, void *where)
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#elif defined COMPILE_PCRE16
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PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
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pcre16_fullinfo(const pcre16 *argument_re, const pcre16_extra *extra_data,
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int what, void *where)
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#elif defined COMPILE_PCRE32
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PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
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pcre32_fullinfo(const pcre32 *argument_re, const pcre32_extra *extra_data,
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int what, void *where)
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#endif
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{
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const REAL_PCRE *re = (const REAL_PCRE *)argument_re;
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const pcre_study_data *study = NULL;
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if (re == NULL || where == NULL) return PCRE_ERROR_NULL;
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if (extra_data != NULL && (extra_data->flags & PCRE_EXTRA_STUDY_DATA) != 0)
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study = (const pcre_study_data *)extra_data->study_data;
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/* Check that the first field in the block is the magic number. If it is not,
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return with PCRE_ERROR_BADMAGIC. However, if the magic number is equal to
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REVERSED_MAGIC_NUMBER we return with PCRE_ERROR_BADENDIANNESS, which
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means that the pattern is likely compiled with different endianness. */
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if (re->magic_number != MAGIC_NUMBER)
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return re->magic_number == REVERSED_MAGIC_NUMBER?
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PCRE_ERROR_BADENDIANNESS:PCRE_ERROR_BADMAGIC;
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/* Check that this pattern was compiled in the correct bit mode */
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if ((re->flags & PCRE_MODE) == 0) return PCRE_ERROR_BADMODE;
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switch (what)
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{
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case PCRE_INFO_OPTIONS:
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*((unsigned long int *)where) = re->options & PUBLIC_COMPILE_OPTIONS;
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break;
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case PCRE_INFO_SIZE:
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*((size_t *)where) = re->size;
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break;
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case PCRE_INFO_STUDYSIZE:
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*((size_t *)where) = (study == NULL)? 0 : study->size;
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break;
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case PCRE_INFO_JITSIZE:
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#ifdef SUPPORT_JIT
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*((size_t *)where) =
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(extra_data != NULL &&
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(extra_data->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&
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extra_data->executable_jit != NULL)?
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PRIV(jit_get_size)(extra_data->executable_jit) : 0;
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#else
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*((size_t *)where) = 0;
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#endif
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break;
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case PCRE_INFO_CAPTURECOUNT:
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*((int *)where) = re->top_bracket;
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break;
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case PCRE_INFO_BACKREFMAX:
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*((int *)where) = re->top_backref;
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break;
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case PCRE_INFO_FIRSTBYTE:
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*((int *)where) =
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((re->flags & PCRE_FIRSTSET) != 0)? (int)re->first_char :
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((re->flags & PCRE_STARTLINE) != 0)? -1 : -2;
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break;
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case PCRE_INFO_FIRSTCHARACTER:
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*((pcre_uint32 *)where) =
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(re->flags & PCRE_FIRSTSET) != 0 ? re->first_char : 0;
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break;
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case PCRE_INFO_FIRSTCHARACTERFLAGS:
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*((int *)where) =
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((re->flags & PCRE_FIRSTSET) != 0) ? 1 :
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((re->flags & PCRE_STARTLINE) != 0) ? 2 : 0;
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break;
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/* Make sure we pass back the pointer to the bit vector in the external
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block, not the internal copy (with flipped integer fields). */
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case PCRE_INFO_FIRSTTABLE:
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*((const pcre_uint8 **)where) =
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(study != NULL && (study->flags & PCRE_STUDY_MAPPED) != 0)?
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((const pcre_study_data *)extra_data->study_data)->start_bits : NULL;
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break;
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case PCRE_INFO_MINLENGTH:
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*((int *)where) =
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(study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0)?
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(int)(study->minlength) : -1;
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break;
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case PCRE_INFO_JIT:
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*((int *)where) = extra_data != NULL &&
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(extra_data->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&
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extra_data->executable_jit != NULL;
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break;
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case PCRE_INFO_LASTLITERAL:
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*((int *)where) =
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((re->flags & PCRE_REQCHSET) != 0)? (int)re->req_char : -1;
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break;
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case PCRE_INFO_REQUIREDCHAR:
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*((pcre_uint32 *)where) =
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((re->flags & PCRE_REQCHSET) != 0) ? re->req_char : 0;
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break;
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case PCRE_INFO_REQUIREDCHARFLAGS:
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*((int *)where) =
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((re->flags & PCRE_REQCHSET) != 0);
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break;
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case PCRE_INFO_NAMEENTRYSIZE:
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*((int *)where) = re->name_entry_size;
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break;
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case PCRE_INFO_NAMECOUNT:
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*((int *)where) = re->name_count;
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break;
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case PCRE_INFO_NAMETABLE:
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*((const pcre_uchar **)where) = (const pcre_uchar *)re + re->name_table_offset;
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break;
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case PCRE_INFO_DEFAULT_TABLES:
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*((const pcre_uint8 **)where) = (const pcre_uint8 *)(PRIV(default_tables));
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break;
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/* From release 8.00 this will always return TRUE because NOPARTIAL is
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no longer ever set (the restrictions have been removed). */
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case PCRE_INFO_OKPARTIAL:
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*((int *)where) = (re->flags & PCRE_NOPARTIAL) == 0;
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break;
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case PCRE_INFO_JCHANGED:
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*((int *)where) = (re->flags & PCRE_JCHANGED) != 0;
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break;
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case PCRE_INFO_HASCRORLF:
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*((int *)where) = (re->flags & PCRE_HASCRORLF) != 0;
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break;
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case PCRE_INFO_MAXLOOKBEHIND:
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*((int *)where) = re->max_lookbehind;
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break;
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default: return PCRE_ERROR_BADOPTION;
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}
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return 0;
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}
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/* End of pcre_fullinfo.c */
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