1 files changed, 85 insertions, 0 deletions

diff --git a/src/include/gnunet_regex_lib.h b/src/include/gnunet_regex_lib.h
new file mode 100644
index 000000000..343a58901
--- /dev/null
+++ b/src/include/gnunet_regex_lib.h
@@ -0,0 +1,85 @@
+/*
+     This file is part of GNUnet
+     (C) 2012 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file include/gnunet_regex_lib.h
+ * @brief library to parse regular expressions into dfa
+ * @author Maximilian Szengel
+ *
+ */
+
+#ifndef GNUNET_REGEX_LIB_H
+#define GNUNET_REGEX_LIB_H
+
+#include "gnunet_util_lib.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#if 0                           /* keep Emacsens' auto-indent happy */
+}
+#endif
+#endif
+
+/**
+ * NFA representation
+ */
+struct GNUNET_REGEX_Nfa;
+
+/**
+ * Construct an NFA data structure by parsing the regex string of 
+ * length len.
+ *
+ * @param regex regular expression string 
+ * @param len length of the string
+ *
+ * @return NFA data structure. Needs to be freed using 
+ *         GNUNET_REGEX_destroy_nfa
+ */
+struct GNUNET_REGEX_Nfa *
+GNUNET_REGEX_construct_nfa(const char *regex, size_t len);
+
+/**
+ * Free the memory allocated by constructing the GNUNET_REGEX_Nfa
+ * data structure.
+ *
+ * @param n NFA to be destroyed
+ */
+void
+GNUNET_REGEX_destroy_nfa(struct GNUNET_REGEX_Nfa *n);
+
+/**
+ * Save the given NFA as a GraphViz dot file
+ *
+ * @param n NFA to be saved
+ * @param filename where to save the file
+ */
+void
+GNUNET_REGEX_save_nfa_graph(struct GNUNET_REGEX_Nfa *n,
+                            const char *filename);
+
+#if 0                           /* keep Emacsens' auto-indent happy */
+{
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+/* end of gnunet_regex_lib.h */
+#endif