forked from len0rd/rockbox
a2c10f6189
We used 16-bit variables to store the 'character code' everywhere but this won't let us represent anything beyond U+FFFF. This patch changes those variables to a custom type that can be 32 or 16 bits depending on the build, and adjusts numerous internal APIs and datastructures to match. This includes: * utf8decode() and friends * font manipulation, caching, rendering, and generation * on-screen keyboard * FAT filesystem (parsing and generating utf16 LFNs) * WIN32 simulator platform code Note that this patch doesn't _enable_ >16bit unicode support; a followup patch will turn that on for appropriate targets. Appears to work on: * hosted linux, native, linux simulator in both 16/32-bit modes. Needs testing on: * windows and macos simulator (16bit+32bit) Change-Id: Iba111b27d2433019b6bff937cf1ebd2c4353a0e8
103 lines
2.5 KiB
C
103 lines
2.5 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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*
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* Copyright (C) 2006 by Frank Dischner
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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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#include "config.h"
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#include "hangul.h"
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const char jamo_table[51][3] = {
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{ 1, 0, 1},
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{ 2, 0, 2},
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{ 0, 0, 3},
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{ 3, 0, 4},
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{ 0, 0, 5},
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{ 0, 0, 6},
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{ 4, 0, 7},
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{ 5, 0, 0},
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{ 6, 0, 8},
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{ 0, 0, 9},
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{ 0, 0, 10},
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{ 0, 0, 11},
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{ 0, 0, 12},
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{ 0, 0, 13},
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{ 0, 0, 14},
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{ 0, 0, 15},
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{ 7, 0, 16},
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{ 8, 0, 17},
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{ 9, 0, 0},
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{ 0, 0, 18},
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{10, 0, 19},
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{11, 0, 20},
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{12, 0, 21},
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{13, 0, 22},
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{14, 0, 0},
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{15, 0, 23},
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{16, 0, 24},
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{17, 0, 25},
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{18, 0, 26},
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{19, 0, 27},
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{ 0, 1, 0},
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{ 0, 2, 0},
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{ 0, 3, 0},
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{ 0, 4, 0},
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{ 0, 5, 0},
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{ 0, 6, 0},
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{ 0, 7, 0},
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{ 0, 8, 0},
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{ 0, 9, 0},
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{ 0, 10, 0},
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{ 0, 11, 0},
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{ 0, 12, 0},
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{ 0, 13, 0},
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{ 0, 14, 0},
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{ 0, 15, 0},
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{ 0, 16, 0},
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{ 0, 17, 0},
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{ 0, 18, 0},
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{ 0, 19, 0},
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{ 0, 20, 0},
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{ 0, 21, 0},
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};
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/* takes three jamo chars and joins them into one hangul */
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ucschar_t hangul_join(ucschar_t lead, ucschar_t vowel, ucschar_t tail)
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{
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ucschar_t ch = 0xfffd;
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if (lead < 0x3131 || lead > 0x3163)
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return ch;
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lead = jamo_table[lead-0x3131][0];
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if (vowel < 0x3131 || vowel > 0x3163)
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return ch;
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vowel = jamo_table[vowel-0x3131][1];
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if (tail) {
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if (tail < 0x3131 || tail > 0x3163)
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return ch;
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tail = jamo_table[tail-0x3131][2];
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if (!tail)
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return ch;
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}
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if (lead && vowel)
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ch = tail + (vowel - 1)*28 + (lead - 1)*588 + 44032;
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return ch;
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}
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