1 files changed, 94 insertions, 0 deletions
diff --git a/erts/emulator/pcre/pcre_info.c b/erts/emulator/pcre/pcre_info.c
new file mode 100644
index 0000000000..86e957b0cc
--- /dev/null
+++ b/erts/emulator/pcre/pcre_info.c
@@ -0,0 +1,94 @@
+/*************************************************
+*      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) 1997-2008 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 erts_pcre_info(), which gives some
+information about a compiled pattern. However, use of this function is now
+deprecated, as it has been superseded by pcre_fullinfo(). */
+
+/* %ExternalCopyright% */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "pcre_internal.h"
+
+
+/*************************************************
+* (Obsolete) Return info about compiled pattern  *
+*************************************************/
+
+/* This is the original "info" function. It picks potentially useful data out
+of the private structure, but its interface was too rigid. It remains for
+backwards compatibility. The public options are passed back in an int - though
+the re->options field has been expanded to a long int, all the public options
+at the low end of it, and so even on 16-bit systems this will still be OK.
+Therefore, I haven't changed the API for erts_pcre_info().
+
+Arguments:
+  argument_re   points to compiled code
+  optptr        where to pass back the options
+  first_byte    where to pass back the first character,
+                or -1 if multiline and all branches start ^,
+                or -2 otherwise
+
+Returns:        number of capturing subpatterns
+                or negative values on error
+*/
+
+PCRE_EXP_DEFN int
+erts_pcre_info(const pcre *argument_re, int *optptr, int *first_byte)
+{
+real_pcre internal_re;
+const real_pcre *re = (const real_pcre *)argument_re;
+if (re == NULL) return PCRE_ERROR_NULL;
+if (re->magic_number != MAGIC_NUMBER)
+  {
+  re = _erts_pcre_try_flipped(re, &internal_re, NULL, NULL);
+  if (re == NULL) return PCRE_ERROR_BADMAGIC;
+  }
+if (optptr != NULL) *optptr = (int)(re->options & PUBLIC_OPTIONS);
+if (first_byte != NULL)
+  *first_byte = ((re->flags & PCRE_FIRSTSET) != 0)? re->first_byte :
+     ((re->flags & PCRE_STARTLINE) != 0)? -1 : -2;
+return re->top_bracket;
+}
+
+/* End of pcre_info.c */