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Diffstat (limited to 'src/core/include/rcscripts/util/simple-regex.h')
| -rw-r--r-- | src/core/include/rcscripts/util/simple-regex.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/core/include/rcscripts/util/simple-regex.h b/src/core/include/rcscripts/util/simple-regex.h new file mode 100644 index 0000000..96d91e1 --- /dev/null +++ b/src/core/include/rcscripts/util/simple-regex.h @@ -0,0 +1,87 @@ +/* + * simple_regex.h + * + * Simle regex library. + * + * Copyright (C) 2004-2006 Martin Schlemmer <azarah@nosferatu.za.org> + * + * + * This program 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 version 2 of the License. + * + * This program 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 this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + * $Header$ + */ + +#ifndef __RC_SIMPLE_REGEX_H__ +#define __RC_SIMPLE_REGEX_H__ + +#define REGEX_NO_MATCH 0 /* We have no match */ +#define REGEX_PARTIAL_MATCH 1 /* Some of the string matches the regex */ +#define REGEX_FULL_MATCH 2 /* The whole string matches the regex */ + +/* Macro to fill in .data and .regex */ +#define FILL_REGEX_DATA(_regex_data, _string, _regex) \ + do { \ + _regex_data.data = _string; \ + _regex_data.regex = _regex; \ + } while (0) + +/* Fill in _regex_data with _data and _regex, on failure goto _error */ +#define DO_REGEX(_regex_data, _data, _regex, _error) \ + do { \ + FILL_REGEX_DATA(_regex_data, _data, _regex); \ + if (-1 == match(&_regex_data)) \ + { \ + DBG_MSG("Could not do regex match!\n"); \ + goto _error; \ + } \ + } while (0) + +/* Evaluate to true if we have some kind of match */ +#define REGEX_MATCH(_regex_data) \ + ((REGEX_FULL_MATCH == _regex_data.match) \ + || (REGEX_PARTIAL_MATCH == _regex_data.match)) + +/* Same as above, but for use when _regex_data is a pointer */ +#define REGEX_MATCH_P(_regex_data) \ + ((REGEX_FULL_MATCH == _regex_data->match) \ + || (REGEX_PARTIAL_MATCH == _regex_data->match)) + +typedef struct +{ + char *data; /* String to perform regex operation on */ + char *regex; /* String containing regex to use */ + int match; /* Will be set if there was a match. Check + * REGEX_*_MATCH above for possible values */ + char *where; /* Pointer to where match starts in data */ + size_t count; /* Count characters from data matched by regex */ + size_t r_count; /* Count characters of regex used for match. This + * should normally be the lenght of regex, but might + * not be for some internal functions ... */ +} regex_data_t; + +/* + * Return: + * + * 0 - There was no error. If there was a match, regex_data->match + * - will be > 0 (this is the definitive check - if not true, the + * - other values of the struct may be bogus), regex_data->count + * - will be the amount of data that was matched (might be 0 for + * - some wildcards), and regex_data->r_count will be > 0. + * + * -1 - An error occured. Check errno for more info. + * + */ +int match (regex_data_t * regex_data); + +#endif /* __RC_SIMPLE_REGEX_H__ */ |