85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_STRFILTER_H
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#define __PERF_STRFILTER_H
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/* General purpose glob matching filter */
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#include <linux/list.h>
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#include <stdbool.h>
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/* A node of string filter */
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struct strfilter_node {
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struct strfilter_node *l; /* Tree left branche (for &,|) */
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struct strfilter_node *r; /* Tree right branche (for !,&,|) */
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const char *p; /* Operator or rule */
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};
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/* String filter */
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struct strfilter {
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struct strfilter_node *root;
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};
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/**
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* strfilter__new - Create a new string filter
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* @rules: Filter rule, which is a combination of glob expressions.
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* @err: Pointer which points an error detected on @rules
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*
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* Parse @rules and return new strfilter. Return NULL if an error detected.
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* In that case, *@err will indicate where it is detected, and *@err is NULL
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* if a memory allocation is failed.
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*/
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struct strfilter *strfilter__new(const char *rules, const char **err);
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/**
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* strfilter__or - Append an additional rule by logical-or
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* @filter: Original string filter
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* @rules: Filter rule to be appended at left of the root of
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* @filter by using logical-or.
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* @err: Pointer which points an error detected on @rules
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*
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* Parse @rules and join it to the @filter by using logical-or.
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* Return 0 if success, or return the error code.
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*/
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int strfilter__or(struct strfilter *filter,
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const char *rules, const char **err);
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/**
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* strfilter__add - Append an additional rule by logical-and
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* @filter: Original string filter
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* @rules: Filter rule to be appended at left of the root of
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* @filter by using logical-and.
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* @err: Pointer which points an error detected on @rules
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*
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* Parse @rules and join it to the @filter by using logical-and.
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* Return 0 if success, or return the error code.
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*/
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int strfilter__and(struct strfilter *filter,
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const char *rules, const char **err);
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/**
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* strfilter__compare - compare given string and a string filter
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* @filter: String filter
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* @str: target string
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*
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* Compare @str and @filter. Return true if the str match the rule
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*/
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bool strfilter__compare(struct strfilter *filter, const char *str);
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/**
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* strfilter__delete - delete a string filter
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* @filter: String filter to delete
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*
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* Delete @filter.
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*/
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void strfilter__delete(struct strfilter *filter);
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/**
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* strfilter__string - Reconstruct a rule string from filter
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* @filter: String filter to reconstruct
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*
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* Reconstruct a rule string from @filter. This will be good for
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* debug messages. Note that returning string must be freed afterward.
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*/
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char *strfilter__string(struct strfilter *filter);
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#endif
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