xhan/Base64Encoding Function

## Base64Encoding Function
- (NSString *) base64EncodingWithLineLength:(unsigned int) lineLength data:(NSData *)imgData {

	static const char *encodingTable = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
	const unsigned char *bytes = [imgData bytes];
	NSMutableString *result = [NSMutableString stringWithCapacity:[imgData length]];
	unsigned long ixtext = 0;
	unsigned long lentext = [imgData length];
	long ctremaining = 0;
	unsigned char inbuf[3], outbuf[4];
	short i = 0;
	short charsonline = 0, ctcopy = 0;
	unsigned long ix = 0;

	while( YES ) {
		ctremaining = lentext - ixtext;
		if( ctremaining <= 0 ) break;

		for( i = 0; i < 3; i++ ) {
			ix = ixtext + i;
			if( ix < lentext ) inbuf[i] = bytes[ix];
			else inbuf [i] = 0;
		}

		outbuf [0] = (inbuf [0] & 0xFC) >> 2;
		outbuf [1] = ((inbuf [0] & 0x03) << 4) | ((inbuf [1] & 0xF0) >> 4);
		outbuf [2] = ((inbuf [1] & 0x0F) << 2) | ((inbuf [2] & 0xC0) >> 6);
		outbuf [3] = inbuf [2] & 0x3F;
		ctcopy = 4;

		switch( ctremaining ) {
			case 1:
				ctcopy = 2;
				break;
			case 2:
				ctcopy = 3;
				break;
		}

		for( i = 0; i < ctcopy; i++ )
			[result appendFormat:@"%c", encodingTable[outbuf[i]]];

		for( i = ctcopy; i < 4; i++ )
			[result appendFormat:@"%c",'='];

		ixtext += 3;
		charsonline += 4;

		if( lineLength > 0 ) {
			if (charsonline >= lineLength) {
				charsonline = 0;
				[result appendString:@"\n"];
			}
		}
	}

	return result;
}

## emailButtonPressed
- (void) emailButtonPressed:(id)sender {

	NSString *body = @"<!DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN' 'http://www.w3.org/TR/html4/loose.dtd'><html><head></head><body>";

	NSData *imageData = nil ;
	NSString* dataStr = nil ;
	for (PhotoItem* item in _photoBoardView.itemsSelected) {
		imageData = UIImageJPEGRepresentation(item.photo.image.image,0.9);
		dataStr = [self base64EncodingWithLineLength:0 data:imageData];
		body = [body stringByAppendingFormat:@"<b><img src='data:image/jpg;base64,%@' alt=' image'/></b>",dataStr];
	}
	body = [body stringByAppendingString:@"</body></html>"];

	NSString *encoded = [body stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
	NSString *atitle = [[@"" stringByAppendingFormat:@"title: %@", @"Image "] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
	NSString * urlString = [@"" stringByAppendingFormat:@"mailto:%@?subject=%@&body=%@", @"",atitle, encoded];
	[[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlString]];
}
	- (NSString ) base64EncodingWithLineLength:(unsigned int) lineLength data:(NSData )imgData {

	static const char *encodingTable = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
	const unsigned char *bytes = [imgData bytes];
	NSMutableString *result = [NSMutableString stringWithCapacity:[imgData length]];
	unsigned long ixtext = 0;
	unsigned long lentext = [imgData length];
	long ctremaining = 0;
	unsigned char inbuf[3], outbuf[4];
	short i = 0;
	short charsonline = 0, ctcopy = 0;
	unsigned long ix = 0;

	while( YES ) {
	ctremaining = lentext - ixtext;
	if( ctremaining <= 0 ) break;

	for( i = 0; i < 3; i++ ) {
	ix = ixtext + i;
	if( ix < lentext ) inbuf[i] = bytes[ix];
	else inbuf [i] = 0;
	}

	outbuf [0] = (inbuf [0] & 0xFC) >> 2;
	outbuf [1] = ((inbuf [0] & 0x03) << 4) \| ((inbuf [1] & 0xF0) >> 4);
	outbuf [2] = ((inbuf [1] & 0x0F) << 2) \| ((inbuf [2] & 0xC0) >> 6);
	outbuf [3] = inbuf [2] & 0x3F;
	ctcopy = 4;

	switch( ctremaining ) {
	case 1:
	ctcopy = 2;
	break;
	case 2:
	ctcopy = 3;
	break;
	}

	for( i = 0; i < ctcopy; i++ )
	[result appendFormat:@"%c", encodingTable[outbuf[i]]];

	for( i = ctcopy; i < 4; i++ )
	[result appendFormat:@"%c",'='];

	ixtext += 3;
	charsonline += 4;

	if( lineLength > 0 ) {
	if (charsonline >= lineLength) {
	charsonline = 0;
	[result appendString:@"\n"];
	}
	}
	}

	return result;
	}
	- (void) emailButtonPressed:(id)sender {

	NSString *body = @"<!DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN' 'http://www.w3.org/TR/html4/loose.dtd'><html><head></head><body>";

	NSData *imageData = nil ;
	NSString* dataStr = nil ;
	for (PhotoItem* item in _photoBoardView.itemsSelected) {
	imageData = UIImageJPEGRepresentation(item.photo.image.image,0.9);
	dataStr = [self base64EncodingWithLineLength:0 data:imageData];
	body = [body stringByAppendingFormat:@"<b><img src='data:image/jpg;base64,%@' alt=' image'/></b>",dataStr];
	}
	body = [body stringByAppendingString:@"</body></html>"];

	NSString *encoded = [body stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
	NSString *atitle = [[@"" stringByAppendingFormat:@"title: %@", @"Image "] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
	NSString * urlString = [@"" stringByAppendingFormat:@"mailto:%@?subject=%@&body=%@", @"",atitle, encoded];
	[[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlString]];
	}