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128 lines
3.8 KiB
C
128 lines
3.8 KiB
C
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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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#include "re_config.h"
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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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int pcre_fullinfo(const pcre* argument_re,
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const pcre_extra* extra_data,
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int what,
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void* where) {
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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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if (re == NULL || where == NULL)
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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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if (re->magic_number != MAGIC_NUMBER) {
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re = _pcre_try_flipped(re, &internal_re, study, &internal_study);
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if (re == NULL)
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return PCRE_ERROR_BADMAGIC;
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if (study != NULL)
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study = &internal_study;
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}
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switch (what) {
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case PCRE_INFO_OPTIONS:
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*((unsigned long int*)where) = re->options & PUBLIC_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_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) = ((re->flags & PCRE_FIRSTSET) != 0) ? re->first_byte
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: ((re->flags & PCRE_STARTLINE) != 0) ? -1
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: -2;
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break;
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/* Make sure we pass back the pointer to the bit vector in the
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external 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)
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->start_bits
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: 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) ? re->req_byte : -1;
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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 uschar**)where) =
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(const uschar*)re + re->name_table_offset;
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break;
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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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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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default:
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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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