gb2uni.h

PDA上的CF CARD 文件系统的建立程式

#ifndef _GB2UNI_H
#define _GB2UNI_H

#define GB_TOTAL_CHAR		7445
#define GB_TOTAL_GROUP_NUM	86

//#define GB_12345

/*************************************************************
Function: getGBUniMapIndex
Description:
	calculate the map index from a gb code
Input:
	msb - the most significant byte of the gb char
        lsb - the least significant byte of the gb char
Output:
	the index
	-1 if code error
**************************************************************/
int getGBUniMapIndex(unsigned char msb, unsigned char lsb);

/*************************************************************
Function: gb_to_unicode
Description:
	calculate the map index from a big5 code
Input:
	bmsb - the most significant byte of the big5 char
        blsb - the least significant byte of the big5 char
Output:
	umsb - the most significant byte of the unicode char
	ulsb - the least significant byte of the unicode char
	both umsb and ulsb will be 0 in case of error or umapped
	  big5 char
**************************************************************/
void gb_to_unicode(unsigned char bmsb, unsigned char blsb, unsigned char *umsb, unsigned char *ulsb);


/*************************************************************
Function: gb_to_unicode_MSB
Description:
	get the MSB of the unicode translated from a big5 code
Input:
	bmsb - the most significant byte of the big5 char
        blsb - the least significant byte of the big5 char
Output:
	the MSB of the unicode
**************************************************************/
unsigned char gb_to_unicode_MSB(unsigned char bmsb, unsigned char blsb);


/*************************************************************
Function: big5_to_unicode_LSB
Description:
	get the LSB of the unicode translated from a big5 code
Input:
	bmsb - the most significant byte of the big5 char
        blsb - the least significant byte of the big5 char
Output:
	the LSB of the unicode
**************************************************************/
unsigned char gb_to_unicode_LSB(unsigned char bmsb, unsigned char blsb);


/*************************************************************
Function: unicode_to_big5
Description:
	translate unicode to big5
Input:
	umsb - the most significant byte of the unicode char
        ulsb - the least significant byte of the unicode char
Output:
	bmsb - the most significant byte of the big5 char
	blsb - the least significant byte of the big5 char
	both bmsb and blsb will be 0 in case of error or umapped
	  unicode char
**************************************************************/
void unicode_to_gb(unsigned char umsb, unsigned char ulsb, unsigned char *bmsb, unsigned char *blsb);


/*************************************************************
Function: unicode_to_gb_MSB
Description:
	get the MSB of the big5 translated from unicode
Input:
	umsb - the most significant byte of the unicode char
        ulsb - the least significant byte of the unicode char
Output:
	the MSB of the big5
**************************************************************/
unsigned char unicode_to_gb_MSB(unsigned char umsb, unsigned char ulsb);


/*************************************************************
Function: unicode_to_gb_LSB
Description:
	get the LSB of the big5 translated from unicode
Input:
	umsb - the most significant byte of the unicode char
        ulsb - the least significant byte of the unicode char
Output:
	the LSB of the big5
**************************************************************/
unsigned char unicode_to_gb_LSB(unsigned char umsb, unsigned char ulsb);



#endif