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- /*
- * This file is part of GNUnet
- * Copyright (C) 2012 GNUnet e.V.
- *
- * GNUnet is free software: you can redistribute it and/or modify it
- * under the terms of the GNU Affero General Public License as published
- * by the Free Software Foundation, either version 3 of the License,
- * 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
- * Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- SPDX-License-Identifier: AGPL3.0-or-later
- */
- /**
- * @file src/regex/regex_test_lib.h
- * @brief library to read regexes representing IP networks from a file.
- * and simplifying the into one big regex, in order to run
- * tests (regex performance, regex profiler).
- * @author Bertlomiej Polot
- */
- #ifndef REGEX_INTERNAL_TEST_LIB_H
- #define REGEX_INTERNAL_TEST_LIB_H
- #include "regex_internal_lib.h"
- #ifdef __cplusplus
- extern "C"
- {
- #if 0 /* keep Emacsens' auto-indent happy */
- }
- #endif
- #endif
- /**
- * Combine an array of regexes into a single prefix-shared regex.
- * Returns a prefix-combine regex that matches the same strings as
- * any of the original regexes.
- *
- * WARNING: only useful for reading specific regexes for specific applications,
- * namely the gnunet-regex-profiler / gnunet-regex-daemon.
- * This function DOES NOT support arbitrary regex combining.
- *
- * @param regexes A NULL-terminated array of regexes.
- * @param alphabet_size Size of the alphabet the regex uses.
- *
- * @return A string with a single regex that matches any of the original regexes
- */
- char *
- REGEX_TEST_combine (char * const regexes[], unsigned int alphabet_size);
- /**
- * Read a set of regexes from a file, one per line and return them in an array
- * suitable for REGEX_TEST_combine.
- * The array must be free'd using REGEX_TEST_free_from_file.
- *
- * @param filename Name of the file containing the regexes.
- *
- * @return A newly allocated, NULL terminated array of regexes.
- */
- char **
- REGEX_TEST_read_from_file (const char *filename);
- /**
- * Free all memory reserved for a set of regexes created by read_from_file.
- *
- * @param regexes NULL-terminated array of regexes.
- */
- void
- REGEX_TEST_free_from_file (char **regexes);
- /**
- * Generate a (pseudo) random regular expression of length 'rx_length', as well
- * as a (optional) string that will be matched by the generated regex. The
- * returned regex needs to be freed.
- *
- * @param rx_length length of the random regex.
- * @param matching_str (optional) pointer to a string that will contain a string
- * that will be matched by the generated regex, if
- * 'matching_str' pointer was not NULL.
- *
- * @return NULL if 'rx_length' is 0, a random regex of length 'rx_length', which
- * needs to be freed, otherwise.
- */
- char *
- REGEX_TEST_generate_random_regex (size_t rx_length, char *matching_str);
- /**
- * Generate a random string of maximum length 'max_len' that only contains literals allowed
- * in a regular expression. The string might be 0 chars long but is garantueed
- * to be shorter or equal to 'max_len'.
- *
- * @param max_len maximum length of the string that should be generated.
- *
- * @return random string that needs to be freed.
- */
- char *
- REGEX_TEST_generate_random_string (size_t max_len);
- /**
- * Options for graph creation function
- * REGEX_TEST_automaton_save_graph.
- */
- enum REGEX_TEST_GraphSavingOptions
- {
- /**
- * Default. Do nothing special.
- */
- REGEX_TEST_GRAPH_DEFAULT = 0,
- /**
- * The generated graph will include extra information such as the NFA states
- * that were used to generate the DFA state.
- */
- REGEX_TEST_GRAPH_VERBOSE = 1,
- /**
- * Enable graph coloring. Will color each SCC in a different color.
- */
- REGEX_TEST_GRAPH_COLORING = 2
- };
- /**
- * Save the given automaton as a GraphViz dot file.
- *
- * @param a the automaton to be saved.
- * @param filename where to save the file.
- * @param options options for graph generation that include coloring or verbose
- * mode
- */
- void
- REGEX_TEST_automaton_save_graph (struct REGEX_INTERNAL_Automaton *a,
- const char *filename,
- enum REGEX_TEST_GraphSavingOptions options);
- #if 0 /* keep Emacsens' auto-indent happy */
- {
- #endif
- #ifdef __cplusplus
- }
- #endif
- /* end of regex_internal_lib.h */
- #endif
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