94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/* ****************************************************************************
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* link/usage/usage.h -- internal header for link usage.
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* Copyright (C) 2016-2017 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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#ifndef LOCAL_LINK_USAGE_H
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# define LOCAL_LINK_USAGE_H 1
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# include "../link.h"
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/* ---
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* Quick-checking macros.
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* --- */
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/* Check that the handle exists. */
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# define chk_handle_exists(CASIO__H) \
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if (!(CASIO__H)) return (casio_error_init);
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/* Check that the handle exists and is usable. */
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# define chk_handle(CASIO__H) \
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chk_handle_exists(CASIO__H) \
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if ((CASIO__H)->casio_link_flags & casio_linkflag_ended) \
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return (casio_error_init);
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/* Check that the protocol we're using is for Protocol Seven. */
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# define chk_seven(CASIO__H) /* TODO */
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/* Check that the handle is active. */
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# define chk_active(CASIO__H) \
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if (~(CASIO__H)->casio_link_flags & casio_linkflag_active) \
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return (casio_error_active);
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/* Check that the handle is passive. */
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# define chk_passive(CASIO__H) \
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if ((CASIO__H)->casio_link_flags & casio_linkflag_active) \
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return (casio_error_active);
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/* Check that the file name is correct. */
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# define chk_filename(CASIO__FN) /* TODO */
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/* Check that the filename is there and ok. */
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# define chk_required_filename(CASIO__FN) \
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if (!(CASIO__FN)) return (casio_error_invalid);
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/* Check that the directory name is ok. */
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# define chk_dirname(CASIO__DN) /* TODO */
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/* Check that the MCS request head is ok. */
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# define chk_head(CASIO__HD) \
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casio_correct_mcsfile_head(CASIO__HD); \
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if (!(CASIO__HD)->casio_mcshead_name[0]) return (casio_error_invalid); \
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if (!(CASIO__HD)->casio_mcshead_group[0]) return (casio_error_invalid);
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/* Check if the buffer is readable. */
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# define chk_bufread(CASIO__BUF) /* TODO */
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/* Check if the buffer is writable. */
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# define chk_bufwrite(CASIO__BUF) /* TODO */
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/* Check that the memory buffer is valid and not empty. */
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# define chk_mem(CASIO__MEM) \
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if (!(CASIO__MEM)) return (casio_error_nostream);
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/* Check if the file is not empty. */
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# define chk_filesize(CASIO__SZ) \
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if (!(casio_off_t)(CASIO__SZ)) return (casio_error_empty);
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#endif /* LOCAL_LINK_USAGE_H */
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