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/************************************************* |
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* Perl-Compatible Regular Expressions * |
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*************************************************/ |
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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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|
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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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----------------------------------------------------------------------------- |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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|
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#include "pcre_internal.h" |
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|
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|
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/************************************************* |
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* Return info about compiled pattern * |
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*************************************************/ |
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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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|
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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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|
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Returns: 0 if data returned, negative on error |
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*/ |
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|
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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, int what, |
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void *where) |
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{ |
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real_pcre internal_re; |
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pcre_study_data internal_study; |
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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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|
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if (re == NULL || where == NULL) return PCRE_ERROR_NULL; |
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|
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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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|
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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, study, &internal_study); |
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if (re == NULL) return PCRE_ERROR_BADMAGIC; |
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if (study != NULL) study = &internal_study; |
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} |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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case PCRE_INFO_FIRSTBYTE: |
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*((int *)where) = |
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((re->flags & PCRE_FIRSTSET) != 0)? re->first_byte : |
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((re->flags & PCRE_STARTLINE) != 0)? -1 : -2; |
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break; |
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|
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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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|
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case PCRE_INFO_FIRSTTABLE: |
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*((const uschar **)where) = |
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(study != NULL && (study->options & 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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|
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case PCRE_INFO_LASTLITERAL: |
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*((int *)where) = |
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((re->flags & PCRE_REQCHSET) != 0)? re->req_byte : -1; |
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break; |
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|
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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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|
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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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|
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case PCRE_INFO_NAMETABLE: |
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*((const uschar **)where) = (const uschar *)re + re->name_table_offset; |
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break; |
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|
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case PCRE_INFO_DEFAULT_TABLES: |
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*((const uschar **)where) = (const uschar *)(_pcre_default_tables); |
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break; |
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|
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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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|
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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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|
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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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|
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default: return PCRE_ERROR_BADOPTION; |
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} |
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|
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return 0; |
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} |
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|
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/* End of pcre_fullinfo.c */ |