Installed PCRE 6.0 sources, which involved adding a number of files and

[exim.git] / src / src / pcre / pcre_fullinfo.c

diff --git a/src/src/pcre/pcre_fullinfo.c b/src/src/pcre/pcre_fullinfo.c
new file mode 100644 (file)
index 0000000..45106ca
--- /dev/null
+++ b/src/src/pcre/pcre_fullinfo.c
@@ -0,0 +1,151 @@
+/* $Cambridge: exim/src/src/pcre/pcre_fullinfo.c,v 1.1 2005/06/15 08:57:10 ph10 Exp $ */
+
+/*************************************************
+*      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 */