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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
85 lines
3.2 KiB
C
85 lines
3.2 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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* $Id$
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*
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* Copyright (c) 2004,2005 by Marcoen Hirschberg
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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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/* Some conversion functions for handling UTF-8
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*
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* I got all the info from:
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* http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
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* and
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* http://en.wikipedia.org/wiki/Unicode
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*/
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#ifndef _RBUNICODE_H_
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#define _RBUNICODE_H_
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#include "config.h"
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#include <stdbool.h>
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#define MASK 0xC0 /* 11000000 */
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#define COMP 0x80 /* 10x */
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enum codepages {
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ISO_8859_1 = 0, /* Latin1 */
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ISO_8859_7, /* Greek */
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ISO_8859_8, /* Hebrew */
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WIN_1251, /* Cyrillic */
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ISO_8859_11, /* Thai */
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WIN_1256, /* Arabic */
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ISO_8859_9, /* Turkish */
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ISO_8859_2, /* Latin Extended */
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WIN_1250, /* Central European */
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WIN_1252, /* Western European */
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SJIS, /* Japanese */
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GB_2312, /* Simp. Chinese */
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KSX_1001, /* Korean */
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BIG_5, /* Trad. Chinese */
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UTF_8, /* Unicode */
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NUM_CODEPAGES,
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INIT_CODEPAGE = ISO_8859_1,
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};
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/* Encode a UCS value as UTF-8 and return a pointer after this UTF-8 char. */
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unsigned char* utf8encode(unsigned long ucs, unsigned char *utf8);
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unsigned char* iso_decode(const unsigned char *latin1, unsigned char *utf8, int cp, int count);
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unsigned char* iso_decode_ex(const unsigned char *iso, unsigned char *utf8, int cp, int count, int utf8_size);
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unsigned char* utf16LEdecode(const unsigned char *utf16, unsigned char *utf8, int count);
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unsigned char* utf16BEdecode(const unsigned char *utf16, unsigned char *utf8, int count);
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unsigned char* utf16decode(const unsigned char *utf16, unsigned char *utf8, int count, int utf8_size, bool le);
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bool utf16_has_bom(const unsigned char *utf16, bool *le);
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unsigned long utf16len_utf8(const unsigned char *utf8);
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unsigned long utf8length(const unsigned char *utf8);
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const unsigned char* utf8decode(const unsigned char *utf8, ucschar_t *ucs);
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void set_codepage(int cp);
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int get_codepage(void);
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int utf8seek(const unsigned char* utf8, int offset);
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const char* get_codepage_name(int cp);
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#ifdef APPLICATION
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#if defined(__linux__)
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const char *get_current_codepage_name_linux(void);
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#endif
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#endif /* APPLICATION */
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#if 0 /* not needed just now */
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void unicode_init(void);
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#else
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#define unicode_init() do {} while (0)
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#endif
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#endif /* _RBUNICODE_H_ */
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