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3 (C) 2012 Christian Grothoff (and other contributing authors)
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13 General Public License for more details.
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21 * @file include/gnunet_regex_lib.h
22 * @brief library to parse regular expressions into dfa
23 * @author Maximilian Szengel
27 #ifndef GNUNET_REGEX_LIB_H
28 #define GNUNET_REGEX_LIB_H
30 #include "gnunet_util_lib.h"
35 #if 0 /* keep Emacsens' auto-indent happy */
41 * Automaton (NFA/DFA) representation
43 struct GNUNET_REGEX_Automaton;
46 * Construct an NFA by parsing the regex string of length 'len'.
48 * @param regex regular expression string
49 * @param len length of the string
51 * @return NFA, needs to be freed using GNUNET_REGEX_destroy_automaton
53 struct GNUNET_REGEX_Automaton *
54 GNUNET_REGEX_construct_nfa (const char *regex, const size_t len);
57 * Construct DFA for the given 'regex' of length 'len'
59 * @param regex regular expression string
60 * @param len length of the regular expression
62 * @return DFA, needs to be freed using GNUNET_REGEX_destroy_automaton
64 struct GNUNET_REGEX_Automaton *
65 GNUNET_REGEX_construct_dfa (const char *regex, const size_t len);
68 * Free the memory allocated by constructing the GNUNET_REGEX_Automaton
71 * @param a automaton to be destroyed
74 GNUNET_REGEX_automaton_destroy (struct GNUNET_REGEX_Automaton *a);
77 * Save the given automaton as a GraphViz dot file
79 * @param a the automaton to be saved
80 * @param filename where to save the file
83 GNUNET_REGEX_automaton_save_graph (struct GNUNET_REGEX_Automaton *a,
84 const char *filename);
87 * Evaluates the given 'string' against the given compiled regex
90 * @param string string to check
92 * @return 0 if string matches, non 0 otherwise
95 GNUNET_REGEX_eval (struct GNUNET_REGEX_Automaton *a,
98 #if 0 /* keep Emacsens' auto-indent happy */
105 /* end of gnunet_regex_lib.h */