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string-list.h
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string-list.h
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#ifndef STRING_LIST_H
#define STRING_LIST_H
struct string_list_item {
char *string;
void *util;
};
typedef int (*compare_strings_fn)(const char *, const char *);
struct string_list {
struct string_list_item *items;
unsigned int nr, alloc;
unsigned int strdup_strings:1;
compare_strings_fn cmp; /* NULL uses strcmp() */
};
#define STRING_LIST_INIT_NODUP { NULL, 0, 0, 0 }
#define STRING_LIST_INIT_DUP { NULL, 0, 0, 1 }
void print_string_list(const struct string_list *p, const char *text);
void string_list_clear(struct string_list *list, int free_util);
/* Use this function to call a custom clear function on each util pointer */
/* The string associated with the util pointer is passed as the second argument */
typedef void (*string_list_clear_func_t)(void *p, const char *str);
void string_list_clear_func(struct string_list *list, string_list_clear_func_t clearfunc);
/* Use this function or the macro below to iterate over each item */
typedef int (*string_list_each_func_t)(struct string_list_item *, void *);
int for_each_string_list(struct string_list *list,
string_list_each_func_t, void *cb_data);
#define for_each_string_list_item(item,list) \
for (item = (list)->items; item < (list)->items + (list)->nr; ++item)
/*
* Apply want to each item in list, retaining only the ones for which
* the function returns true. If free_util is true, call free() on
* the util members of any items that have to be deleted. Preserve
* the order of the items that are retained.
*/
void filter_string_list(struct string_list *list, int free_util,
string_list_each_func_t want, void *cb_data);
/*
* Remove any empty strings from the list. If free_util is true, call
* free() on the util members of any items that have to be deleted.
* Preserve the order of the items that are retained.
*/
void string_list_remove_empty_items(struct string_list *list, int free_util);
/* Use these functions only on sorted lists: */
int string_list_has_string(const struct string_list *list, const char *string);
int string_list_find_insert_index(const struct string_list *list, const char *string,
int negative_existing_index);
struct string_list_item *string_list_insert(struct string_list *list, const char *string);
struct string_list_item *string_list_insert_at_index(struct string_list *list,
int insert_at, const char *string);
struct string_list_item *string_list_lookup(struct string_list *list, const char *string);
/*
* Remove all but the first of consecutive entries with the same
* string value. If free_util is true, call free() on the util
* members of any items that have to be deleted.
*/
void string_list_remove_duplicates(struct string_list *sorted_list, int free_util);
/* Use these functions only on unsorted lists: */
/*
* Add string to the end of list. If list->strdup_string is set, then
* string is copied; otherwise the new string_list_entry refers to the
* input string.
*/
struct string_list_item *string_list_append(struct string_list *list, const char *string);
/*
* Like string_list_append(), except string is never copied. When
* list->strdup_strings is set, this function can be used to hand
* ownership of a malloc()ed string to list without making an extra
* copy.
*/
struct string_list_item *string_list_append_nodup(struct string_list *list, char *string);
void sort_string_list(struct string_list *list);
int unsorted_string_list_has_string(struct string_list *list, const char *string);
struct string_list_item *unsorted_string_list_lookup(struct string_list *list,
const char *string);
void unsorted_string_list_delete_item(struct string_list *list, int i, int free_util);
/*
* Split string into substrings on character delim and append the
* substrings to list. The input string is not modified.
* list->strdup_strings must be set, as new memory needs to be
* allocated to hold the substrings. If maxsplit is non-negative,
* then split at most maxsplit times. Return the number of substrings
* appended to list.
*
* Examples:
* string_list_split(l, "foo:bar:baz", ':', -1) -> ["foo", "bar", "baz"]
* string_list_split(l, "foo:bar:baz", ':', 0) -> ["foo:bar:baz"]
* string_list_split(l, "foo:bar:baz", ':', 1) -> ["foo", "bar:baz"]
* string_list_split(l, "foo:bar:", ':', -1) -> ["foo", "bar", ""]
* string_list_split(l, "", ':', -1) -> [""]
* string_list_split(l, ":", ':', -1) -> ["", ""]
*/
int string_list_split(struct string_list *list, const char *string,
int delim, int maxsplit);
/*
* Like string_list_split(), except that string is split in-place: the
* delimiter characters in string are overwritten with NULs, and the
* new string_list_items point into string (which therefore must not
* be modified or freed while the string_list is in use).
* list->strdup_strings must *not* be set.
*/
int string_list_split_in_place(struct string_list *list, char *string,
int delim, int maxsplit);
#endif /* STRING_LIST_H */