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