/************************************************* * 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) 1997-2005 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_fullinfo(), which returns information about a compiled pattern. */ #include "pcre_internal.h" /************************************************* * Return info about compiled pattern * *************************************************/ /* This is a newer "info" function which has an extensible interface so that additional items can be added compatibly. Arguments: argument_re points to compiled code extra_data points extra data, or NULL what what information is required where where to put the information Returns: 0 if data returned, negative on error */ EXPORT int pcre_fullinfo(const pcre *argument_re, const pcre_extra *extra_data, int what, void *where) { real_pcre internal_re; pcre_study_data internal_study; const real_pcre *re = (const real_pcre *)argument_re; const pcre_study_data *study = NULL; if (re == NULL || where == NULL) return PCRE_ERROR_NULL; if (extra_data != NULL && (extra_data->flags & PCRE_EXTRA_STUDY_DATA) != 0) study = (const pcre_study_data *)extra_data->study_data; if (re->magic_number != MAGIC_NUMBER) { re = _pcre_try_flipped(re, &internal_re, study, &internal_study); if (re == NULL) return PCRE_ERROR_BADMAGIC; if (study != NULL) study = &internal_study; } switch (what) { case PCRE_INFO_OPTIONS: *((unsigned long int *)where) = re->options & PUBLIC_OPTIONS; break; case PCRE_INFO_SIZE: *((size_t *)where) = re->size; break; case PCRE_INFO_STUDYSIZE: *((size_t *)where) = (study == NULL)? 0 : study->size; break; case PCRE_INFO_CAPTURECOUNT: *((int *)where) = re->top_bracket; break; case PCRE_INFO_BACKREFMAX: *((int *)where) = re->top_backref; break; case PCRE_INFO_FIRSTBYTE: *((int *)where) = ((re->options & PCRE_FIRSTSET) != 0)? re->first_byte : ((re->options & PCRE_STARTLINE) != 0)? -1 : -2; break; /* Make sure we pass back the pointer to the bit vector in the external block, not the internal copy (with flipped integer fields). */ case PCRE_INFO_FIRSTTABLE: *((const uschar **)where) = (study != NULL && (study->options & PCRE_STUDY_MAPPED) != 0)? ((const pcre_study_data *)extra_data->study_data)->start_bits : NULL; break; case PCRE_INFO_LASTLITERAL: *((int *)where) = ((re->options & PCRE_REQCHSET) != 0)? re->req_byte : -1; break; case PCRE_INFO_NAMEENTRYSIZE: *((int *)where) = re->name_entry_size; break; case PCRE_INFO_NAMECOUNT: *((int *)where) = re->name_count; break; case PCRE_INFO_NAMETABLE: *((const uschar **)where) = (const uschar *)re + re->name_table_offset; break; case PCRE_INFO_DEFAULT_TABLES: *((const uschar **)where) = (const uschar *)(_pcre_default_tables); break; default: return PCRE_ERROR_BADOPTION; } return 0; } /* End of pcre_fullinfo.c */