atbcommon.c

是一个手机功能的模拟程序

 				handling.
 
 $Returns:		None

 $Arguments:	text		- The text string
 				textIndex	- The position of the character to set
 				character	- The unicode character to set it to

*******************************************************************************/
  
void ATB_string_SetChar(T_ATB_TEXT *text, USHORT textIndex, USHORT character)
{
	USHORT *unicode;
	
	if (text->dcs==ATB_DCS_UNICODE)
	{
		unicode = (USHORT *)text->data;
		unicode[textIndex] = character;
	}
	else
		text->data[textIndex] = ATB_char_Ascii(character);

	return;
}


/*******************************************************************************

 $Function:		ATB_string_GetChar

 $Description:	Gets the value of a character in the string.  Use this function rather than
 				accessing text data directly; it allows transparent ASCII and Unicode
 				handling.
 
 $Returns:		The unicode character at the required position

 $Arguments:	text		- The text string
 				textIndex	- The position of the character to get

*******************************************************************************/

USHORT ATB_string_GetChar(T_ATB_TEXT *text, USHORT textIndex)
{
	USHORT *unicode;
	USHORT character;
	
	if (text->dcs==ATB_DCS_UNICODE)
	{
		unicode = (USHORT *)text->data;
		character = unicode[textIndex];
	}
	else
		character = ATB_char_Unicode(text->data[textIndex]);

	return character;
}


/*******************************************************************************

 $Function:		ATB_string_MoveLeft

 $Description:	Move part of string left by 'offset' characters
 
 $Returns:		TRUE if the operation was successful

 $Arguments:	text		- The text string
 				textIndex	- The place where the newly moved section is to go
 				offset		- The number of characters to move the section left by

*******************************************************************************/
  
BOOL ATB_string_MoveLeft(T_ATB_TEXT *text, USHORT textIndex, USHORT offset)
{
	BOOL outcome;
	USHORT character;
	
	/* Copy until end of line char reached */

	while ((textIndex+offset)<=text->len)
	{
		character = ATB_string_GetChar(text, textIndex+offset);
		ATB_string_SetChar(text, textIndex, character);
		textIndex++;
	}
	outcome = TRUE;
	text->len -= offset;
	
	return outcome;
}


/*******************************************************************************

 $Function:		ATB_string_MoveRight

 $Description:	Move part of string right by 'offset' characters
 
 $Returns:		TRUE if the operation was successful

 $Arguments:	text		- The text string
 				textIndex	- The start of the section to be moved right
 				offset		- The number of characters to move the section right by
 				size		- The maximum possible length of the string

*******************************************************************************/

BOOL ATB_string_MoveRight(T_ATB_TEXT *text, USHORT textStart, USHORT offset, USHORT size)
{
	int textIndex;
	BOOL outcome;
	USHORT character;
	
	textIndex = text->len;
	
	if ((text->len+ offset) < size)	/* SPR#1995 - SH - <= should be < */
	{
		while (textIndex >= textStart)
		{
			character = ATB_string_GetChar(text, textIndex);
			ATB_string_SetChar(text, textIndex+offset, character);
			textIndex--;
		}
		text->len += offset;
		outcome = TRUE;
	}
	else
		outcome = FALSE;
	
	return outcome;
}


/*******************************************************************************

 $Function:		ATB_string_Length

 $Description:	Returns the length of the string, also setting the 'len' parameter of
 				the text structure
 
 $Returns:		Length of the string in characters

 $Arguments:	text		- The text string

*******************************************************************************/

USHORT ATB_string_Length(T_ATB_TEXT* text)
{
	USHORT 	length;

	if (text->dcs==ATB_DCS_UNICODE)
	{
		text->len = ATB_string_UCLength((USHORT *)text->data);
	}
	else
	{
		text->len = strlen((char *)text->data);
	}
	
	return text->len;
}


/*******************************************************************************

 $Function:		ATB_string_UCLength

 $Description:	Returns the length of the provided unicode string
 
 $Returns:		Length of the string in characters

 $Arguments:	text		- Pointer to the unicode string

*******************************************************************************/

USHORT ATB_string_UCLength(USHORT* text)
{
	USHORT 	length = 0;

	while (text[length]!=UNICODE_EOLN)
	{
		length++;
	}
	
	return (length);
}


/*******************************************************************************

 $Function:		ATB_string_Copy

 $Description:	Copy 'src' string into 'dest' string.
 
 $Returns:		None.

 $Arguments:	dest		- The destination string (allocated by caller)
 				src			- The source string (allocated by caller)

*******************************************************************************/

void ATB_string_Copy(T_ATB_TEXT* dest, T_ATB_TEXT* src)
{
	USHORT textIndex;
	USHORT character; 

	dest->dcs = src->dcs;
	
	for (textIndex=0; textIndex<src->len; textIndex++)
	{
		character = ATB_string_GetChar(src, textIndex);
		ATB_string_SetChar(dest, textIndex, character);
	}

	ATB_string_SetChar(dest, textIndex, UNICODE_EOLN);
	dest->len = textIndex;

	return;
}


/*******************************************************************************

 $Function:		ATB_string_Concat

 $Description:	Concatenate the second string, adding it to the end of the first.
 				N.B. The strings don't have to have the same DCS.
 
 $Returns:		None.

 $Arguments:	dest		- The destination string (allocated by caller)
 				src			- The source string (allocated by caller)

*******************************************************************************/

void ATB_string_Concat(T_ATB_TEXT* dest, T_ATB_TEXT* src)
{
	USHORT textIndex;
	USHORT character;
 
	for (textIndex = 0; textIndex<src->len; textIndex++)
	{
		character = ATB_string_GetChar(src, textIndex);
		ATB_string_SetChar(dest, textIndex+src->len, character);
	}

	dest->len += src->len;
	ATB_string_SetChar(dest, textIndex+src->len, UNICODE_EOLN);

	return;
}


/*******************************************************************************

 $Function:		ATB_string_Concat

 $Description:	Return position of character in string, or -1 if not found
 
 $Returns:		Position of character in string

 $Arguments:	text		- The text string to search
 				findChar	- The character to find

*******************************************************************************/

SHORT ATB_string_FindChar(T_ATB_TEXT* text, USHORT findChar)
{
	USHORT textIndex;
	SHORT foundPos;
	USHORT character;
	 
	textIndex = 0;
	foundPos = -1;

	character = ATB_string_GetChar(text, 0);

	while (character!=UNICODE_EOLN && foundPos==-1)
	{
		if (character==findChar)
			foundPos = (int)textIndex;
		textIndex++;
		character = ATB_string_GetChar(text, textIndex);
	}
	
	return foundPos;
}


/*******************************************************************************

 $Function:		ATB_string_ToUnicode

 $Description:	Convert a string to a unicode string.  Memory for the unicode
  				string should be allocated before calling.  Returns a pointer to the
  				unicode string.
  
 $Returns:		None.

 $Arguments:	dest		- The destination string (allocated by caller)
 				src			- The source string (allocated by caller)

*******************************************************************************/

void ATB_string_ToUnicode(T_ATB_TEXT *dest, T_ATB_TEXT *src)
{
	USHORT textIndex;
	USHORT character; 
	
	dest->dcs = ATB_DCS_UNICODE;

	for (textIndex=0; textIndex<src->len; textIndex++)
	{
		character = ATB_string_GetChar(src, textIndex);
		ATB_string_SetChar(dest, textIndex, character);
	}

	ATB_string_SetChar(dest, textIndex, UNICODE_EOLN);
	dest->len = textIndex;

	return;
}


/*******************************************************************************

 $Function:		ATB_string_ToAscii

 $Description:	Convert a string to an ascii string.  Memory for the ascii
  				string should be allocated before calling.  Returns a pointer to the
  				ascii string.
  
 $Returns:		None.

 $Arguments:	dest		- The destination string (allocated by caller)
 				src			- The source string (allocated by caller)

*******************************************************************************/

void ATB_string_ToAscii(T_ATB_TEXT *dest, T_ATB_TEXT *src)
{
	USHORT textIndex;
	USHORT character;
	 
	dest->dcs = ATB_DCS_ASCII;

	for (textIndex = 0; textIndex<src->len; textIndex++)
	{
		character = ATB_string_GetChar(src, textIndex);

		if (ATB_char_IsAscii(character) && ATB_char_IsVisible(character)) // Filter out non-ascii characters
		{
			character = ATB_char_Unicode('?');
		}

		ATB_string_SetChar(dest, textIndex, character);
	}

	return;
}


/*******************************************************************************

 $Function:		ATB_string_ToUnicode

 $Description:	Moves index position through text
  
 $Returns:		The new index.

 $Arguments:	text		- The text string
				textIndex	- Current position within the text buffer
				offset		- Negative for backwards movement, positive for forwards
							  movement.

*******************************************************************************/ 

USHORT ATB_string_IndexMove(T_ATB_TEXT *text, USHORT textIndex, SHORT offset)
{ 
	while (textIndex>0 && offset<0)
	{
		textIndex--;
		offset++;
	}

	while (ATB_string_GetChar(text, textIndex)!=UNICODE_EOLN && offset>0)
	{
		textIndex++;
		offset--;
	}

	return textIndex;
}