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Cleaned up codepage handling, by Yoshihisa Uchida. (FS#9349)

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19339 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Björn Stenberg 2008-12-04 22:00:12 +00:00
parent 38e97057a9
commit af078b4f86
5 changed files with 119 additions and 49 deletions
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71
firmware/common/unicode.c
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@ -1,6 +1,24 @@
/* Some conversion functions for handling UTF-8
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* copyright Marcoen Hirschberg (2004,2005)
* Copyright (c) 2004,2005 by Marcoen Hirschberg
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/* Some conversion functions for handling UTF-8
*
* I got all the info from:
* http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
@ -27,11 +45,6 @@ static int loaded_cp_table = 0;
#define MAX_CP_TABLE_SIZE 32768
#define NUM_TABLES 5
enum {
ISO_8859_1 = 0, ISO_8859_7, ISO_8859_8, WIN_1251,
ISO_8859_11, WIN_1256, ISO_8859_9, ISO_8859_2, WIN_1250,
SJIS, GB_2312, KSX_1001, BIG_5, UTF_8, NUM_CODEPAGES
};
static const char *filename[NUM_TABLES] =
{
CODEPAGE_DIR"/iso.cp",
@ -40,29 +53,58 @@ static const char *filename[NUM_TABLES] =
CODEPAGE_DIR"/949.cp", /* KSX1001 */
CODEPAGE_DIR"/950.cp" /* BIG5 */
};
static const char cp_2_table[NUM_CODEPAGES] =
{
0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 0
};
static const char *name_codepages[NUM_CODEPAGES+1] =
{
"ISO-8859-1",
"ISO-8859-7",
"ISO-8859-8",
"CP1251",
"ISO-8859-11",
"CP1256",
"ISO-8859-9",
"ISO-8859-2",
"CP1250",
"SJIS",
"GB-2312",
"KSX-1001",
"BIG5",
"UTF-8",
"unknown"
};
#else /* !HAVE_LCD_BITMAP, reduced support */
#define MAX_CP_TABLE_SIZE 640
#define NUM_TABLES 1
enum {
ISO_8859_1 = 0, ISO_8859_7, WIN_1251, ISO_8859_9,
ISO_8859_2, WIN_1250, UTF_8, NUM_CODEPAGES
};
static const char *filename[NUM_TABLES] =
{
CODEPAGE_DIR"/isomini.cp",
};
static const char cp_2_table[NUM_CODEPAGES] =
{
0, 1, 1, 1, 1, 1, 0
};
static const char *name_codepages[NUM_CODEPAGES+1] =
{
"ISO-8859-1",
"ISO-8859-7",
"CP1251",
"ISO-8859-9",
"ISO-8859-2",
"CP1250",
"UTF-8",
"unknown"
};
#endif
static unsigned short codepage_table[MAX_CP_TABLE_SIZE];
@ -344,3 +386,10 @@ int utf8seek(const unsigned char* utf8, int offset)
}
return pos;
}
const char* get_codepage_name(int cp)
{
if (cp < 0 || cp>= NUM_CODEPAGES)
return name_codepages[NUM_CODEPAGES];
return name_codepages[cp];
}