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Linux/tools/perf/util/strfilter.h

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  1 #ifndef __PERF_STRFILTER_H
  2 #define __PERF_STRFILTER_H
  3 /* General purpose glob matching filter */
  4 
  5 #include <linux/list.h>
  6 #include <stdbool.h>
  7 
  8 /* A node of string filter */
  9 struct strfilter_node {
 10         struct strfilter_node *l;       /* Tree left branche (for &,|) */
 11         struct strfilter_node *r;       /* Tree right branche (for !,&,|) */
 12         const char *p;          /* Operator or rule */
 13 };
 14 
 15 /* String filter */
 16 struct strfilter {
 17         struct strfilter_node *root;
 18 };
 19 
 20 /**
 21  * strfilter__new - Create a new string filter
 22  * @rules: Filter rule, which is a combination of glob expressions.
 23  * @err: Pointer which points an error detected on @rules
 24  *
 25  * Parse @rules and return new strfilter. Return NULL if an error detected.
 26  * In that case, *@err will indicate where it is detected, and *@err is NULL
 27  * if a memory allocation is failed.
 28  */
 29 struct strfilter *strfilter__new(const char *rules, const char **err);
 30 
 31 /**
 32  * strfilter__compare - compare given string and a string filter
 33  * @self: String filter
 34  * @str: target string
 35  *
 36  * Compare @str and @self. Return true if the str match the rule
 37  */
 38 bool strfilter__compare(struct strfilter *self, const char *str);
 39 
 40 /**
 41  * strfilter__delete - delete a string filter
 42  * @self: String filter to delete
 43  *
 44  * Delete @self.
 45  */
 46 void strfilter__delete(struct strfilter *self);
 47 
 48 #endif
 49 

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