* safety wrappers/replacements
* (mostly only difference: safely handle NULL strings)
*/
-char *str_dup (const char*);
char *str_cat (char*, size_t, const char*);
char *str_ncat (char*, size_t, const char*, size_t);
int str_cmp (const char*, const char*);
int str_ncmp (const char*, const char*, size_t);
int str_ncasecmp (const char*, const char*, size_t);
int str_coll (const char*, const char*);
-size_t str_len (const char*);
/*
* tools