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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/perf/util/strfilter.h | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/util/strfilter.h')
-rw-r--r-- | tools/perf/util/strfilter.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/tools/perf/util/strfilter.h b/tools/perf/util/strfilter.h new file mode 100644 index 000000000..e0c25a40f --- /dev/null +++ b/tools/perf/util/strfilter.h @@ -0,0 +1,84 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PERF_STRFILTER_H +#define __PERF_STRFILTER_H +/* General purpose glob matching filter */ + +#include <linux/list.h> +#include <stdbool.h> + +/* A node of string filter */ +struct strfilter_node { + struct strfilter_node *l; /* Tree left branche (for &,|) */ + struct strfilter_node *r; /* Tree right branche (for !,&,|) */ + const char *p; /* Operator or rule */ +}; + +/* String filter */ +struct strfilter { + struct strfilter_node *root; +}; + +/** + * strfilter__new - Create a new string filter + * @rules: Filter rule, which is a combination of glob expressions. + * @err: Pointer which points an error detected on @rules + * + * Parse @rules and return new strfilter. Return NULL if an error detected. + * In that case, *@err will indicate where it is detected, and *@err is NULL + * if a memory allocation is failed. + */ +struct strfilter *strfilter__new(const char *rules, const char **err); + +/** + * strfilter__or - Append an additional rule by logical-or + * @filter: Original string filter + * @rules: Filter rule to be appended at left of the root of + * @filter by using logical-or. + * @err: Pointer which points an error detected on @rules + * + * Parse @rules and join it to the @filter by using logical-or. + * Return 0 if success, or return the error code. + */ +int strfilter__or(struct strfilter *filter, + const char *rules, const char **err); + +/** + * strfilter__add - Append an additional rule by logical-and + * @filter: Original string filter + * @rules: Filter rule to be appended at left of the root of + * @filter by using logical-and. + * @err: Pointer which points an error detected on @rules + * + * Parse @rules and join it to the @filter by using logical-and. + * Return 0 if success, or return the error code. + */ +int strfilter__and(struct strfilter *filter, + const char *rules, const char **err); + +/** + * strfilter__compare - compare given string and a string filter + * @filter: String filter + * @str: target string + * + * Compare @str and @filter. Return true if the str match the rule + */ +bool strfilter__compare(struct strfilter *filter, const char *str); + +/** + * strfilter__delete - delete a string filter + * @filter: String filter to delete + * + * Delete @filter. + */ +void strfilter__delete(struct strfilter *filter); + +/** + * strfilter__string - Reconstruct a rule string from filter + * @filter: String filter to reconstruct + * + * Reconstruct a rule string from @filter. This will be good for + * debug messages. Note that returning string must be freed afterward. + */ +char *strfilter__string(struct strfilter *filter); + +#endif |