STRINGLIST(3)

STRINGLIST(3) | Library Functions Manual | STRINGLIST(3)

# NAME

stringlist, sl_init, sl_add, sl_free, sl_find, sl_delete — stringlist manipulation functions

# LIBRARY

Standard C Library (libc, -lc)

# 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.

May 6, 2010 | NetBSD 8.0