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5462f203d3
Was missing: * Arabic Supplement * Arabic Extended B * Arabic Extended A * Rumi Numerals * Arabic Extended C * Indic Isqaq Numerals * Ottoman Siyaq Numerals * Arabic Mathematical Alphabet Symbols Worth noting that most of these are vanishingly unlikely to ever show up in the context of Rockbox. (The exceptions are "Arabic Supplement" and possibly the Mathematical Symbols) Also corrected "Arabic Presentation" into two distint blocks, as the characters between them (fe00-fe6f) are NOT indicative of RTL. Change-Id: I0c5c547921c789d32425682c8c75edb21428f549
51 lines
2.2 KiB
C
51 lines
2.2 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2005 by Gadi Cohen
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef BIDI_H
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#define BIDI_H
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#include <stdbool.h>
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/* True for code points that belong to a right-to-left script (Hebrew, Arabic
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* and the Arabic presentation forms). Shared by the bidi engine and by callers
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* that need to know a string's direction. */
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static inline bool is_rtl_char(ucschar_t c)
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{
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return ((c >= 0x0590 && c <= 0x06ff) /* Hebrew + Arabic */ ||
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(c >= 0x0750 && c <= 0x077f) /* Arabic Supp */ ||
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(c >= 0x0870 && c <= 0x08ff) /* Arabic Ext B+A */ ||
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(c >= 0xfb50 && c <= 0xfdff) /* Arabic Pres A */ ||
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(c >= 0xfe70 && c <= 0xfefc) /* Arabic Pres B */
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#ifdef UNICODE32
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|| (c >= 0x10e60 && c <= 0x107ef) /* Rumi Numerals */
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|| (c >= 0x10ec0 && c <= 0x10eff) /* Arabic Ext C */
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|| (c >= 0x1ec70 && c <= 0x1ecbf) /* Indic Siyaq Numerals */
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|| (c >= 0x1ed00 && c <= 0x1ed4f) /* Ottoman Siyaq Numerals */
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|| (c >= 0x1ee00 && c <= 0x1eeff) /* Arabic Mathenatical Symbols */
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#endif
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);
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}
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/* True if the string's first strongly-directional character is RTL, i.e. the
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* string should be laid out right-to-left. */
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bool text_is_rtl(const unsigned char *str);
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ucschar_t *bidi_l2v(const unsigned char *str, int orientation);
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#endif /* BIDI_H */
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