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Diffstat (limited to 'src/libnetdata/simple_pattern/simple_pattern.h')
-rw-r--r-- | src/libnetdata/simple_pattern/simple_pattern.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/libnetdata/simple_pattern/simple_pattern.h b/src/libnetdata/simple_pattern/simple_pattern.h new file mode 100644 index 000000000..1af0f87b9 --- /dev/null +++ b/src/libnetdata/simple_pattern/simple_pattern.h @@ -0,0 +1,57 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#ifndef NETDATA_SIMPLE_PATTERN_H +#define NETDATA_SIMPLE_PATTERN_H + +#include "../libnetdata.h" + +typedef enum __attribute__ ((__packed__)) { + SIMPLE_PATTERN_EXACT, + SIMPLE_PATTERN_PREFIX, + SIMPLE_PATTERN_SUFFIX, + SIMPLE_PATTERN_SUBSTRING +} SIMPLE_PREFIX_MODE; + +typedef enum __attribute__ ((__packed__)) { + SP_NOT_MATCHED, + SP_MATCHED_NEGATIVE, + SP_MATCHED_POSITIVE, +} SIMPLE_PATTERN_RESULT; + +struct simple_pattern; +typedef struct simple_pattern SIMPLE_PATTERN; + +// create a simple_pattern from the string given +// default_mode is used in cases where EXACT matches, without an asterisk, +// should be considered PREFIX matches. +SIMPLE_PATTERN *simple_pattern_create(const char *list, const char *separators, SIMPLE_PREFIX_MODE default_mode, bool case_sensitive); + +struct netdata_string; + +// test if string str is matched from the pattern and fill 'wildcarded' with the parts matched by '*' +SIMPLE_PATTERN_RESULT simple_pattern_matches_extract(SIMPLE_PATTERN *list, const char *str, char *wildcarded, size_t wildcarded_size); +SIMPLE_PATTERN_RESULT simple_pattern_matches_string_extract(SIMPLE_PATTERN *list, struct netdata_string *str, char *wildcarded, size_t wildcarded_size); +SIMPLE_PATTERN_RESULT simple_pattern_matches_buffer_extract(SIMPLE_PATTERN *list, BUFFER *str, char *wildcarded, size_t wildcarded_size); +SIMPLE_PATTERN_RESULT simple_pattern_matches_length_extract(SIMPLE_PATTERN *list, const char *str, size_t len, char *wildcarded, size_t wildcarded_size); + +// test if string str is matched from the pattern +#define simple_pattern_matches(list, str) (simple_pattern_matches_extract(list, str, NULL, 0) == SP_MATCHED_POSITIVE) +#define simple_pattern_matches_string(list, str) (simple_pattern_matches_string_extract(list, str, NULL, 0) == SP_MATCHED_POSITIVE) +#define simple_pattern_matches_buffer(list, str) (simple_pattern_matches_buffer_extract(list, str, NULL, 0) == SP_MATCHED_POSITIVE) + +// free a simple_pattern that was created with simple_pattern_create() +// list can be NULL, in which case, this does nothing. +void simple_pattern_free(SIMPLE_PATTERN *list); + +void simple_pattern_dump(uint64_t debug_type, SIMPLE_PATTERN *p) ; +int simple_pattern_is_potential_name(SIMPLE_PATTERN *p) ; +char *simple_pattern_iterate(SIMPLE_PATTERN **p); + +#define SIMPLE_PATTERN_DEFAULT_WEB_SEPARATORS ",|\t\r\n\f\v" + +#define is_valid_sp(x) ((x) && *(x) && !((x)[0] == '*' && (x)[1] == '\0')) + +#define string_to_simple_pattern(str) (is_valid_sp(str) ? simple_pattern_create(str, SIMPLE_PATTERN_DEFAULT_WEB_SEPARATORS, SIMPLE_PATTERN_EXACT, true) : NULL) +#define string_to_simple_pattern_nocase(str) (is_valid_sp(str) ? simple_pattern_create(str, SIMPLE_PATTERN_DEFAULT_WEB_SEPARATORS, SIMPLE_PATTERN_EXACT, false) : NULL) + +#endif //NETDATA_SIMPLE_PATTERN_H |