STRINGLIST(3)

NAME
stringlist, sl_init, sl_add, sl_free, sl_find, sl_delete - stringlist manipulation functions

LIBRARY
libc

SYNOPSIS
#include <stringlist.h>
StringList *
sl_init();
int
sl_add(StringList *sl, char *item);
void
sl_free(StringList *sl, int freeall);
char *
sl_find(StringList *sl, const char *item);
int
sl_delete(StringList *sl, const char *item, int freeit);

DESCRIPTION
The stringlist functions manipulate stringlists, which are lists of strings that extend automatically if necessary.

The StringList structure has the following definition:

    typedef struct _stringlist {
    	char	**sl_str;
    	size_t	  sl_max;
    	size_t	  sl_cur;
    } StringList;

where:

sl_str
    is a pointer to the base of the array containing the list,

sl_max
    is the size of sl_str, and

sl_cur
    is the offset in sl_str of the current element.

The following stringlist manipulation functions are available:

sl_init()
    Create a stringlist. Returns a pointer to a StringList, or NULL in case of failure.

sl_free()
    Releases memory occupied by sl and the sl->sl_str array. If freeall is non-zero, then each of the items within sl->sl_str is released as well.

sl_add()
    Add item to sl->sl_str at sl->sl_cur, extending the size of sl->sl_str. Returns zero upon success, -1 upon failure.

sl_find()
    Find item in sl, returning NULL if it's not found.

sl_delete()
    Remove item from the list. If freeit is non-zero, the string is freed. Returns 0 if the name is found and -1 if the name is not found.

SEE ALSO
free(3), malloc(3)

HISTORY
The stringlist functions appeared in NetBSD 1.3.