89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/* ****************************************************************************
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* mcs/local/iter.c -- iterate on heads in a local main memory.
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* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libcasio.
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* libcasio is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3.0 of the License,
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* or (at your option) any later version.
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*
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* libcasio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libcasio; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************* */
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#include "local.h"
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typedef struct localmcs_iter_s {
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localmcs_t *mcs;
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int id;
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} localmcs_iter_t;
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/**
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* next_mcsfile:
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* Get the next element.
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*
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* @arg cookie the iteration cookie.
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* @arg nextp the next element to get.
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* @return the error code (0 if ok).
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*/
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CASIO_LOCAL int CASIO_EXPORT next_mcsfile(localmcs_iter_t *cookie,
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void **nextp)
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{
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casio_mcsfile_t *file;
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if (cookie->id >= cookie->mcs->localmcs_count)
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return (casio_error_iter);
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file = cookie->mcs->localmcs_files[cookie->id++];
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*nextp = &file->casio_mcsfile_head;
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return (0);
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}
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/**
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* end_iter:
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* End the iterator.
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*
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* @arg cookie the iteration cookie.
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* @return the error code (0 if ok).
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*/
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CASIO_LOCAL void CASIO_EXPORT end_iter(localmcs_iter_t *cookie)
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{
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free(cookie);
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}
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/**
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* casio_localmcs_iter:
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* Iterate on files in a local main memory.
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*
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* @arg cookie the local main memory cookie.
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* @arg iterp the iterator to make.
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* @return the error code (0 if ok).
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*/
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CASIO_LOCAL casio_iter_funcs_t const casio_localmcs_iter_funcs = {
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(casio_next_t *)next_mcsfile,
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NULL,
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(casio_end_t *)end_iter
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};
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int CASIO_EXPORT casio_localmcs_iter(localmcs_t *cookie, casio_iter_t **iterp)
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{
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localmcs_iter_t *icookie;
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icookie = casio_alloc(1, sizeof(*icookie));
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if (!cookie)
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return (casio_error_alloc);
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icookie->mcs = cookie;
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icookie->id = 0;
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return (casio_iter(iterp, icookie, &casio_localmcs_iter_funcs));
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}
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