73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/* Display width functions.
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Copyright (C) 2001-2002, 2005, 2007, 2009-2022 Free Software Foundation,
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Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file 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. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef _UNIWIDTH_H
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#define _UNIWIDTH_H
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#include "unitypes.h"
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/* Get size_t. */
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#include <stddef.h>
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/* Get locale_charset() declaration. */
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#include "localcharset.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Display width. */
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/* These functions are locale dependent. The encoding argument identifies
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the encoding (e.g. "ISO-8859-2" for Polish). */
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/* Determine number of column positions required for UC. */
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extern int
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uc_width (ucs4_t uc, const char *encoding)
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_UC_ATTRIBUTE_PURE;
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/* Determine number of column positions required for first N units
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(or fewer if S ends before this) in S. */
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extern int
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u8_width (const uint8_t *s, size_t n, const char *encoding)
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_UC_ATTRIBUTE_PURE;
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extern int
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u16_width (const uint16_t *s, size_t n, const char *encoding)
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_UC_ATTRIBUTE_PURE;
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extern int
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u32_width (const uint32_t *s, size_t n, const char *encoding)
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_UC_ATTRIBUTE_PURE;
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/* Determine number of column positions required for S. */
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extern int
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u8_strwidth (const uint8_t *s, const char *encoding)
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_UC_ATTRIBUTE_PURE;
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extern int
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u16_strwidth (const uint16_t *s, const char *encoding)
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_UC_ATTRIBUTE_PURE;
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extern int
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u32_strwidth (const uint32_t *s, const char *encoding)
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_UC_ATTRIBUTE_PURE;
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#ifdef __cplusplus
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}
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#endif
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#endif /* _UNIWIDTH_H */
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