ObjFW  Check-in [9d3cd5e5fe]

 * @return A new autoreleased OFString
 */
+ (instancetype)stringWithCharacters: (const of_unichar_t*)characters
			      length: (size_t)length
			   byteOrder: (of_byte_order_t)byteOrder;

/*!
 * @brief Creates a new OFString from a UTF-16 encoded string.
 *
 * @param string The UTF-16 string
 * @return A new autoreleased OFString
 */
+ (instancetype)stringWithUTF16String: (const uint16_t*)string;

/*!
 * @brief Creates a new OFString from a UTF-16 encoded string with the specified
 *	  length.
 *
 * @param string The UTF-16 string
 * @param length The length of the unicode string
 * @return A new autoreleased OFString
 */
+ (instancetype)stringWithUTF16String: (const uint16_t*)string
			       length: (size_t)length;

/*!
 * @brief Creates a new OFString from a UTF-16 encoded string, assuming the
 *	  specified byte order if no BOM is found.
 *
 * @param string The UTF-16 string
 * @param byteOrder The byte order to assume if there is no BOM
 * @return A new autoreleased OFString
 */
+ (instancetype)stringWithUTF16String: (const uint16_t*)string
			    byteOrder: (of_byte_order_t)byteOrder;

/*!
 * @brief Creates a new OFString from a UTF-16 encoded string with the
 *	  specified length, assuming the specified byte order if no BOM is
 *	  found.
 *
 * @param string The UTF-16 string
 * @param length The length of the unicode string

 * @param byteOrder The byte order to assume if there is no BOM
 * @return An initialized OFString
 */
- initWithCharacters: (const of_unichar_t*)characters
	      length: (size_t)length
	   byteOrder: (of_byte_order_t)byteOrder;

/*!
 * @brief Initializes an already allocated OFString with a UTF-16 string.
 *
 * @param string The UTF-16 string
 * @return An initialized OFString
 */
- initWithUTF16String: (const uint16_t*)string;

/*!
 * @brief Initializes an already allocated OFString with a UTF-16 string with
 *	  the specified length.
 *
 * @param string The UTF-16 string
 * @param length The length of the UTF-16 string
 * @return An initialized OFString
 */
- initWithUTF16String: (const uint16_t*)string
	       length: (size_t)length;

/*!
 * @brief Initializes an already allocated OFString with a UTF-16 string,
 *	  assuming the specified byte order if no BOM is found.
 *
 * @param string The UTF-16 string
 * @param byteOrder The byte order to assume if there is no BOM
 * @return An initialized OFString
 */
- initWithUTF16String: (const uint16_t*)string
	    byteOrder: (of_byte_order_t)byteOrder;

/*!
 * @brief Initializes an already allocated OFString with a UTF-16 string with
 *	  the specified length, assuming the specified byte order if no BOM is
 *	  found.
 *
 * @param string The UTF-16 string
 * @param length The length of the UTF-16 string

#endif

#ifdef __cplusplus
extern "C" {
#endif
extern size_t of_string_utf8_encode(of_unichar_t, char*);
extern size_t of_string_utf8_decode(const char*, size_t, of_unichar_t*);
extern size_t of_string_utf16_length(const uint16_t*);
#ifdef __cplusplus
}
#endif

		*ret = ((buffer[0] & 0x07) << 18) | ((buffer[1] & 0x3F) << 12) |
		    ((buffer[2] & 0x3F) << 6) | (buffer[3] & 0x3F);
		return 4;
	}

	return 0;
}

size_t
of_string_utf16_length(const uint16_t *string)
{
	size_t length = 0;

	while (*string++ != 0)
		length++;

	return length;
}

static OFString*
standardize_path(OFArray *components, OFString *currentDirectory,
    OFString *parentDirectory, OFString *joinString)
{
	void *pool = objc_autoreleasePoolPush();
	OFMutableArray *array;

	      length: (size_t)length
	   byteOrder: (of_byte_order_t)byteOrder
{
	return (id)[[OFString_UTF8 alloc] initWithCharacters: string
						      length: length
						   byteOrder: byteOrder];
}

- initWithUTF16String: (const uint16_t*)string
{
	return (id)[[OFString_UTF8 alloc] initWithUTF16String: string];
}

- initWithUTF16String: (const uint16_t*)string
	       length: (size_t)length
{
	return (id)[[OFString_UTF8 alloc] initWithUTF16String: string
						       length: length];
}

- initWithUTF16String: (const uint16_t*)string
	    byteOrder: (of_byte_order_t)byteOrder
{
	return (id)[[OFString_UTF8 alloc] initWithUTF16String: string
						    byteOrder: byteOrder];
}

- initWithUTF16String: (const uint16_t*)string
	       length: (size_t)length
	    byteOrder: (of_byte_order_t)byteOrder
{
	return (id)[[OFString_UTF8 alloc] initWithUTF16String: string
						       length: length

			      length: (size_t)length
			   byteOrder: (of_byte_order_t)byteOrder
{
	return [[[self alloc] initWithCharacters: string
					  length: length
				       byteOrder: byteOrder] autorelease];
}

+ (instancetype)stringWithUTF16String: (const uint16_t*)string
{
	return [[[self alloc] initWithUTF16String: string] autorelease];
}

+ (instancetype)stringWithUTF16String: (const uint16_t*)string
			       length: (size_t)length
{
	return [[[self alloc] initWithUTF16String: string
					   length: length] autorelease];
}

+ (instancetype)stringWithUTF16String: (const uint16_t*)string
			    byteOrder: (of_byte_order_t)byteOrder
{
	return [[[self alloc] initWithUTF16String: string
					byteOrder: byteOrder] autorelease];
}

+ (instancetype)stringWithUTF16String: (const uint16_t*)string
			       length: (size_t)length
			    byteOrder: (of_byte_order_t)byteOrder
{
	return [[[self alloc] initWithUTF16String: string
					   length: length

		[self doesNotRecognizeSelector: _cmd];
		abort();
	} @catch (id e) {
		[self release];
		@throw e;
	}
}

- initWithUTF16String: (const uint16_t*)string
{
	return [self initWithUTF16String: string
				  length: of_string_utf16_length(string)
			       byteOrder: OF_BYTE_ORDER_NATIVE];
}

- initWithUTF16String: (const uint16_t*)string
	       length: (size_t)length
{
	return [self initWithUTF16String: string
				  length: length
			       byteOrder: OF_BYTE_ORDER_NATIVE];
}

- initWithUTF16String: (const uint16_t*)string
	    byteOrder: (of_byte_order_t)byteOrder
{
	return [self initWithUTF16String: string
				  length: of_string_utf16_length(string)
			       byteOrder: byteOrder];
}

- initWithUTF16String: (const uint16_t*)string
	       length: (size_t)length
	    byteOrder: (of_byte_order_t)byteOrder
{
	@try {
		[self doesNotRecognizeSelector: _cmd];

	size_t length = [self length];
	uint16_t *ret;
	size_t i, j;
	BOOL swap = (byteOrder != OF_BYTE_ORDER_NATIVE);

	/* Allocate memory for the worst case */
	ret = [object allocMemoryWithSize: sizeof(uint16_t)
				    count: (length + 1) * 2];

	j = 0;

	for (i = 0; i < length; i++) {
		of_unichar_t c = characters[i];

		if (c > 0x10FFFF)

				c -= 0x10000;
				ret[j++] = 0xD800 | (c >> 10);
				ret[j++] = 0xDC00 | (c & 0x3FF);
			} else
				ret[j++] = c;
		}
	}
	ret[j] = 0;

	@try {
		ret = [object resizeMemory: ret
				      size: sizeof(uint16_t)
				     count: j + 1];
	} @catch (OFOutOfMemoryException *e) {
		/* We don't care, as we only tried to make it smaller */
	}

	objc_autoreleasePoolPop(pool);

	return ret;

	0xFEFF, 'f', 0xF6, 0xF6, 'b', 0xE4, 'r', 0x1F03A
};
static of_unichar_t sucstr[] = {
	0xFFFE0000, 0x66000000, 0xF6000000, 0xF6000000, 0x62000000, 0xE4000000,
	0x72000000, 0x3AF00100
};
static uint16_t utf16str[] = {
	0xFEFF, 'f', 0xF6, 0xF6, 'b', 0xE4, 'r', 0xD83C, 0xDC3A, 0
};
static uint16_t sutf16str[] = {
	0xFFFE, 0x6600, 0xF600, 0xF600, 0x6200, 0xE400, 0x7200, 0x3CD8, 0x3ADC,
	0
};

@interface EntityHandler: OFObject <OFStringXMLUnescapingDelegate>
@end

@implementation EntityHandler
-	   (OFString*)string: (OFString*)string

						  sizeof(*ucstr)]) &&
	    [is isEqual: @"fööbär🀺"] &&
	    (is = [OFString stringWithCharacters: sucstr
					  length: sizeof(sucstr) /
						  sizeof(*sucstr)]) &&
	    [is isEqual: @"fööbär🀺"])

	TEST(@"+[stringWithUTF16String:]",
	    (is = [OFString stringWithUTF16String: utf16str]) &&


	    [is isEqual: @"fööbär🀺"] &&
	    (is = [OFString stringWithUTF16String: sutf16str]) &&


	    [is isEqual: @"fööbär🀺"])

	TEST(@"+[stringWithContentsOfFile:encoding]", (is = [OFString
	    stringWithContentsOfFile: @"testfile.txt"
			    encoding: OF_STRING_ENCODING_ISO_8859_1]) &&
	    [is isEqual: @"testäöü"])