1 /* GNU Mailutils -- a suite of utilities for electronic mail 2 Copyright (C) 1999-2021 Free Software Foundation, Inc. 3 4 This library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 3 of the License, or (at your option) any later version. 8 9 This library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General 15 Public License along with this library. If not, see 16 <http://www.gnu.org/licenses/>. */ 17 18 #ifndef _MAILUTILS_SYS_ITERATOR_H 19 # define _MAILUTILS_SYS_ITERATOR_H 20 21 # include <mailutils/iterator.h> 22 23 # ifdef __cplusplus 24 extern "C" { 25 # endif 26 27 struct _mu_iterator 28 { 29 struct _mu_iterator *next_itr; /* Next iterator in the chain */ 30 void *owner; /* Object whose contents is being iterated */ 31 int is_advanced; /* Is the iterator already advanced */ 32 33 int (*dup) (void **ptr, void *owner); 34 int (*destroy) (mu_iterator_t itr, void *owner); 35 int (*first) (void *owner); 36 int (*next) (void *owner); 37 int (*getitem) (void *owner, void **pret, const void **pkey); 38 int (*delitem) (void *owner, void *item); 39 int (*finished_p) (void *owner); 40 int (*itrctl) (void *owner, enum mu_itrctl_req req, void *arg); 41 void *(*dataptr) (void *); 42 }; 43 44 # ifdef __cplusplus 45 } 46 # endif 47 48 #endif /* _MAILUTILS_SYS_ITERATOR_H */ 49