#include "ff.h"   
#include "fontupd.h"
#include "w25qxx.h"    
//////////////////////////////////////////////////////////////////////////////////	 
//本程序只供学习使用，未经作者许可，不得用于其它任何用途
//ALIENTEK STM32开发板
//ffunicode.c修改后 代码	   
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//创建日期:2018/8/2
//版本：V1.0
//版权所有，盗版必究。
//Copyright(C) 广州市星翼电子科技有限公司 2014-2024
//All rights reserved									  
////////////////////////////////////////////////////////////////////////////////// 	
  
  
/*------------------------------------------------------------------------*/
/* OEM <==> Unicode conversions for static code page configuration        */
/* DBCS fixed code page                                                   */
/*------------------------------------------------------------------------*/
WCHAR ff_uni2oem (	/* Returns OEM code character, zero on error */
	DWORD	uni,	/* UTF-16 encoded character to be converted */
	WORD	cp		/* Code page for the conversion */
)
{
	WCHAR t[2];
	WCHAR c;
	u32 i, li, hi;
	u16 n;			 
	u32 gbk2uni_offset=0;	 
	if (uni<0x80)c=uni;	//ASCII,直接不用转换.
	else 
	{ 
		hi=ftinfo.ugbksize/2;//对半开.
		hi =hi / 4 - 1;
		li = 0;
		for (n = 16; n; n--)
		{
			i = li + (hi - li) / 2;	
			W25QXX_Read((u8*)&t,ftinfo.ugbkaddr+i*4+gbk2uni_offset,4);//读出4个字节  
			if (uni== t[0]) break;
			if (uni>t[0])li = i;  
			else hi = i;    
		}
		c = n ? t[1] : 0;  	    
	}
	return c;
}


WCHAR ff_oem2uni (	/* Returns Unicode character, zero on error */
	WCHAR	oem,	/* OEM code to be converted */
	WORD	cp		/* Code page for the conversion */
)
{
	WCHAR t[2];
	WCHAR c;
	u32 i, li, hi;
	u16 n;			 
	u32 gbk2uni_offset=ftinfo.ugbksize/2;			  
						  
	if (oem<0x80)c=oem;	//ASCII,直接不用转换.
	else 
	{     
		hi=ftinfo.ugbksize/2;//对半开.
		hi =hi / 4 - 1;
		li = 0;
		for (n = 16; n; n--)
		{
			i = li + (hi - li) / 2;	
			W25QXX_Read((u8*)&t,ftinfo.ugbkaddr+i*4+gbk2uni_offset,4);//读出4个字节  
			if (oem==t[0]) break;
			if (oem>t[0])li = i;  
			else hi = i;    
		}
		c = n ? t[1] : 0;  	    
	}
	return c;
} 


/*------------------------------------------------------------------------*/
/* Unicode up-case conversion                                             */
/*------------------------------------------------------------------------*/

DWORD ff_wtoupper (	/* Returns up-converted code point */
	DWORD uni		/* Unicode code point to be up-converted */
)
{
	const WORD *p;
	WORD uc, bc, nc, cmd;
	static const WORD cvt1[] = {	/* Compressed up conversion table for U+0000 - U+0FFF */
		/* Basic Latin */
		0x0061,0x031A,
		/* Latin-1 Supplement */
		0x00E0,0x0317,
		0x00F8,0x0307,
		0x00FF,0x0001,0x0178,
		/* Latin Extended-A */
		0x0100,0x0130,
		0x0132,0x0106,
		0x0139,0x0110,
		0x014A,0x012E,
		0x0179,0x0106,
		/* Latin Extended-B */
		0x0180,0x004D,0x0243,0x0181,0x0182,0x0182,0x0184,0x0184,0x0186,0x0187,0x0187,0x0189,0x018A,0x018B,0x018B,0x018D,0x018E,0x018F,0x0190,0x0191,0x0191,0x0193,0x0194,0x01F6,0x0196,0x0197,0x0198,0x0198,0x023D,0x019B,0x019C,0x019D,0x0220,0x019F,0x01A0,0x01A0,0x01A2,0x01A2,0x01A4,0x01A4,0x01A6,0x01A7,0x01A7,0x01A9,0x01AA,0x01AB,0x01AC,0x01AC,0x01AE,0x01AF,0x01AF,0x01B1,0x01B2,0x01B3,0x01B3,0x01B5,0x01B5,0x01B7,0x01B8,0x01B8,0x01BA,0x01BB,0x01BC,0x01BC,0x01BE,0x01F7,0x01C0,0x01C1,0x01C2,0x01C3,0x01C4,0x01C5,0x01C4,0x01C7,0x01C8,0x01C7,0x01CA,0x01CB,0x01CA,
		0x01CD,0x0110,
		0x01DD,0x0001,0x018E,
		0x01DE,0x0112,
		0x01F3,0x0003,0x01F1,0x01F4,0x01F4,
		0x01F8,0x0128,
		0x0222,0x0112,
		0x023A,0x0009,0x2C65,0x023B,0x023B,0x023D,0x2C66,0x023F,0x0240,0x0241,0x0241,
		0x0246,0x010A,
		/* IPA Extensions */
		0x0253,0x0040,0x0181,0x0186,0x0255,0x0189,0x018A,0x0258,0x018F,0x025A,0x0190,0x025C,0x025D,0x025E,0x025F,0x0193,0x0261,0x0262,0x0194,0x0264,0x0265,0x0266,0x0267,0x0197,0x0196,0x026A,0x2C62,0x026C,0x026D,0x026E,0x019C,0x0270,0x0271,0x019D,0x0273,0x0274,0x019F,0x0276,0x0277,0x0278,0x0279,0x027A,0x027B,0x027C,0x2C64,0x027E,0x027F,0x01A6,0x0281,0x0282,0x01A9,0x0284,0x0285,0x0286,0x0287,0x01AE,0x0244,0x01B1,0x01B2,0x0245,0x028D,0x028E,0x028F,0x0290,0x0291,0x01B7,
		/* Greek, Coptic */
		0x037B,0x0003,0x03FD,0x03FE,0x03FF,
		0x03AC,0x0004,0x0386,0x0388,0x0389,0x038A,
		0x03B1,0x0311,
		0x03C2,0x0002,0x03A3,0x03A3,
		0x03C4,0x0308,
		0x03CC,0x0003,0x038C,0x038E,0x038F,
		0x03D8,0x0118,
		0x03F2,0x000A,0x03F9,0x03F3,0x03F4,0x03F5,0x03F6,0x03F7,0x03F7,0x03F9,0x03FA,0x03FA,
		/* Cyrillic */
		0x0430,0x0320,
		0x0450,0x0710,
		0x0460,0x0122,
		0x048A,0x0136,
		0x04C1,0x010E,
		0x04CF,0x0001,0x04C0,
		0x04D0,0x0144,
		/* Armenian */
		0x0561,0x0426,

		0x0000	/* EOT */
	};
	static const WORD cvt2[] = {	/* Compressed up conversion table for U+1000 - U+FFFF */
		/* Phonetic Extensions */
		0x1D7D,0x0001,0x2C63,
		/* Latin Extended Additional */
		0x1E00,0x0196,
		0x1EA0,0x015A,
		/* Greek Extended */
		0x1F00,0x0608,
		0x1F10,0x0606,
		0x1F20,0x0608,
		0x1F30,0x0608,
		0x1F40,0x0606,
		0x1F51,0x0007,0x1F59,0x1F52,0x1F5B,0x1F54,0x1F5D,0x1F56,0x1F5F,
		0x1F60,0x0608,
		0x1F70,0x000E,0x1FBA,0x1FBB,0x1FC8,0x1FC9,0x1FCA,0x1FCB,0x1FDA,0x1FDB,0x1FF8,0x1FF9,0x1FEA,0x1FEB,0x1FFA,0x1FFB,
		0x1F80,0x0608,
		0x1F90,0x0608,
		0x1FA0,0x0608,
		0x1FB0,0x0004,0x1FB8,0x1FB9,0x1FB2,0x1FBC,
		0x1FCC,0x0001,0x1FC3,
		0x1FD0,0x0602,
		0x1FE0,0x0602,
		0x1FE5,0x0001,0x1FEC,
		0x1FF3,0x0001,0x1FFC,
		/* Letterlike Symbols */
		0x214E,0x0001,0x2132,
		/* Number forms */
		0x2170,0x0210,
		0x2184,0x0001,0x2183,
		/* Enclosed Alphanumerics */
		0x24D0,0x051A,
		0x2C30,0x042F,
		/* Latin Extended-C */
		0x2C60,0x0102,
		0x2C67,0x0106, 0x2C75,0x0102,
		/* Coptic */
		0x2C80,0x0164,
		/* Georgian Supplement */
		0x2D00,0x0826,
		/* Full-width */
		0xFF41,0x031A,

		0x0000	/* EOT */
	};


	if (uni < 0x10000) {	/* Is it in BMP? */
		uc = (WORD)uni;
		p = uc < 0x1000 ? cvt1 : cvt2;
		for (;;) {
			bc = *p++;								/* Get the block base */
			if (bc == 0 || uc < bc) break;			/* Not matched? */
			nc = *p++; cmd = nc >> 8; nc &= 0xFF;	/* Get processing command and block size */
			if (uc < bc + nc) {	/* In the block? */
				switch (cmd) {
				case 0:	uc = p[uc - bc]; break;		/* Table conversion */
				case 1:	uc -= (uc - bc) & 1; break;	/* Case pairs */
				case 2: uc -= 16; break;			/* Shift -16 */
				case 3:	uc -= 32; break;			/* Shift -32 */
				case 4:	uc -= 48; break;			/* Shift -48 */
				case 5:	uc -= 26; break;			/* Shift -26 */
				case 6:	uc += 8; break;				/* Shift +8 */
				case 7: uc -= 80; break;			/* Shift -80 */
				case 8:	uc -= 0x1C60; break;		/* Shift -0x1C60 */
				}
				break;
			}
			if (cmd == 0) p += nc;	/* Skip table if needed */
		}
		uni = uc;
	}

	return uni;
}