ffunicode.c

/*------------------------------------------------------------------------*/
/* Unicode handling functions for FatFs R0.13+                            */
/*------------------------------------------------------------------------*/
/* This module will occupy a huge memory in the .const section when the    /
/  FatFs is configured for LFN with DBCS. If the system has any Unicode    /
/  utilitiy for the code conversion, this module should be modified to use /
/  that function to avoid silly memory consumption.                        /
/-------------------------------------------------------------------------*/
/*
/ Copyright (C) 2017, ChaN, all right reserved.
/
/ FatFs module is an open source software. Redistribution and use of FatFs in
/ source and binary forms, with or without modification, are permitted provided
/ that the following condition is met:
/
/ 1. Redistributions of source code must retain the above copyright notice,
/    this condition and the following disclaimer.
/
/ This software is provided by the copyright holder and contributors "AS IS"
/ and any warranties related to this software are DISCLAIMED.
/ The copyright owner or contributors be NOT LIABLE for any damages caused
/ by use of this software.
*/


#include "ff.h"

#if FF_USE_LFN

#define MERGE2(a, b) a ## b
#define CVTBL(tbl, cp) MERGE2(tbl, cp)


/*------------------------------------------------------------------------*/
/* Code Conversion Tables                                                 */
/*------------------------------------------------------------------------*/

#if FF_CODE_PAGE == 932 || FF_CODE_PAGE == 0	/* Japanese */
static
const WCHAR uni2oem932[] = {	/* Unicode --> Shift_JIS pairs */
	0x00A7, 0x8198, 0x00A8, 0x814E, 0x00B0, 0x818B, 0x00B1, 0x817D,	0x00B4, 0x814C, 0x00B6, 0x81F7, 0x00D7, 0x817E, 0x00F7, 0x8180,
	0x0391, 0x839F, 0x0392, 0x83A0, 0x0393, 0x83A1, 0x0394, 0x83A2,	0x0395, 0x83A3, 0x0396, 0x83A4, 0x0397, 0x83A5, 0x0398, 0x83A6,
	0x0399, 0x83A7, 0x039A, 0x83A8, 0x039B, 0x83A9, 0x039C, 0x83AA,	0x039D, 0x83AB, 0x039E, 0x83AC, 0x039F, 0x83AD, 0x03A0, 0x83AE,
	0x03A1, 0x83AF, 0x03A3, 0x83B0, 0x03A4, 0x83B1, 0x03A5, 0x83B2,	0x03A6, 0x83B3, 0x03A7, 0x83B4, 0x03A8, 0x83B5, 0x03A9, 0x83B6,
	0x03B1, 0x83BF, 0x03B2, 0x83C0, 0x03B3, 0x83C1, 0x03B4, 0x83C2,	0x03B5, 0x83C3, 0x03B6, 0x83C4, 0x03B7, 0x83C5, 0x03B8, 0x83C6,
	0x03B9, 0x83C7, 0x03BA, 0x83C8, 0x03BB, 0x83C9, 0x03BC, 0x83CA,	0x03BD, 0x83CB, 0x03BE, 0x83CC, 0x03BF, 0x83CD, 0x03C0, 0x83CE,
	0x03C1, 0x83CF, 0x03C3, 0x83D0, 0x03C4, 0x83D1, 0x03C5, 0x83D2,	0x03C6, 0x83D3, 0x03C7, 0x83D4, 0x03C8, 0x83D5, 0x03C9, 0x83D6,
	0x0401, 0x8446, 0x0410, 0x8440, 0x0411, 0x8441, 0x0412, 0x8442,	0x0413, 0x8443, 0x0414, 0x8444, 0x0415, 0x8445, 0x0416, 0x8447,
	0x0417, 0x8448, 0x0418, 0x8449, 0x0419, 0x844A, 0x041A, 0x844B,	0x041B, 0x844C, 0x041C, 0x844D, 0x041D, 0x844E, 0x041E, 0x844F,
	0x041F, 0x8450, 0x0420, 0x8451, 0x0421, 0x8452, 0x0422, 0x8453,	0x0423, 0x8454, 0x0424, 0x8455, 0x0425, 0x8456, 0x0426, 0x8457,
	0x0427, 0x8458, 0x0428, 0x8459, 0x0429, 0x845A, 0x042A, 0x845B,	0x042B, 0x845C, 0x042C, 0x845D, 0x042D, 0x845E, 0x042E, 0x845F,
	0x042F, 0x8460, 0x0430, 0x8470, 0x0431, 0x8471, 0x0432, 0x8472,	0x0433, 0x8473, 0x0434, 0x8474, 0x0435, 0x8475, 0x0436, 0x8477,
	0x0437, 0x8478, 0x0438, 0x8479, 0x0439, 0x847A, 0x043A, 0x847B,	0x043B, 0x847C, 0x043C, 0x847D, 0x043D, 0x847E, 0x043E, 0x8480,
	0x043F, 0x8481, 0x0440, 0x8482, 0x0441, 0x8483, 0x0442, 0x8484,	0x0443, 0x8485, 0x0444, 0x8486, 0x0445, 0x8487, 0x0446, 0x8488,
	0x0447, 0x8489, 0x0448, 0x848A, 0x0449, 0x848B, 0x044A, 0x848C,	0x044B, 0x848D, 0x044C, 0x848E, 0x044D, 0x848F, 0x044E, 0x8490,
	0x044F, 0x8491, 0x0451, 0x8476, 0x2010, 0x815D, 0x2015, 0x815C,	0x2018, 0x8165, 0x2019, 0x8166, 0x201C, 0x8167, 0x201D, 0x8168,
	0x2020, 0x81F5, 0x2021, 0x81F6, 0x2025, 0x8164, 0x2026, 0x8163,	0x2030, 0x81F1, 0x2032, 0x818C, 0x2033, 0x818D, 0x203B, 0x81A6,
	0x2103, 0x818E, 0x2116, 0x8782, 0x2121, 0x8784, 0x212B, 0x81F0,	0x2160, 0x8754, 0x2161, 0x8755, 0x2162, 0x8756, 0x2163, 0x8757,
	0x2164, 0x8758, 0x2165, 0x8759, 0x2166, 0x875A, 0x2167, 0x875B,	0x2168, 0x875C, 0x2169, 0x875D, 0x2170, 0xFA40, 0x2171, 0xFA41,
	0x2172, 0xFA42, 0x2173, 0xFA43, 0x2174, 0xFA44, 0x2175, 0xFA45,	0x2176, 0xFA46, 0x2177, 0xFA47, 0x2178, 0xFA48, 0x2179, 0xFA49,
	0x2190, 0x81A9, 0x2191, 0x81AA, 0x2192, 0x81A8, 0x2193, 0x81AB,	0x21D2, 0x81CB, 0x21D4, 0x81CC, 0x2200, 0x81CD, 0x2202, 0x81DD,
	0x2203, 0x81CE, 0x2207, 0x81DE, 0x2208, 0x81B8, 0x220B, 0x81B9,	0x2211, 0x8794, 0x221A, 0x81E3, 0x221D, 0x81E5, 0x221E, 0x8187,
	0x221F, 0x8798, 0x2220, 0x81DA, 0x2225, 0x8161, 0x2227, 0x81C8,	0x2228, 0x81C9, 0x2229, 0x81BF, 0x222A, 0x81BE, 0x222B, 0x81E7,
	0x222C, 0x81E8, 0x222E, 0x8793, 0x2234, 0x8188, 0x2235, 0x81E6,	0x223D, 0x81E4, 0x2252, 0x81E0, 0x2260, 0x8182, 0x2261, 0x81DF,
	0x2266, 0x8185, 0x2267, 0x8186, 0x226A, 0x81E1, 0x226B, 0x81E2,	0x2282, 0x81BC, 0x2283, 0x81BD, 0x2286, 0x81BA, 0x2287, 0x81BB,
	0x22A5, 0x81DB, 0x22BF, 0x8799, 0x2312, 0x81DC, 0x2460, 0x8740,	0x2461, 0x8741, 0x2462, 0x8742, 0x2463, 0x8743, 0x2464, 0x8744,
	0x2465, 0x8745, 0x2466, 0x8746, 0x2467, 0x8747, 0x2468, 0x8748,	0x2469, 0x8749, 0x246A, 0x874A, 0x246B, 0x874B, 0x246C, 0x874C,
	0x246D, 0x874D, 0x246E, 0x874E, 0x246F, 0x874F, 0x2470, 0x8750,	0x2471, 0x8751, 0x2472, 0x8752, 0x2473, 0x8753, 0x2500, 0x849F,
	0x2501, 0x84AA, 0x2502, 0x84A0, 0x2503, 0x84AB, 0x250C, 0x84A1,	0x250F, 0x84AC, 0x2510, 0x84A2, 0x2513, 0x84AD, 0x2514, 0x84A4,
	0x2517, 0x84AF, 0x2518, 0x84A3, 0x251B, 0x84AE, 0x251C, 0x84A5,	0x251D, 0x84BA, 0x2520, 0x84B5, 0x2523, 0x84B0, 0x2524, 0x84A7,