ObjFW  Check-in [9a2430abfc]

 * \brief Prepends another OFString to the OFMutableString.
 *
 * \param string An OFString to prepend
 */
- (void)prependString: (OFString*)string;

/**
 * \brief Reverses the string.
 */
- (void)reverse;

/**
 * \brief Converts the string to uppercase.
 */
- (void)uppercase;

/**
 * \brief Converts the string to lowercase.
 */
- (void)lowercase;

/**
 * \brief Capitalizes the string.
 *
 * \note This only considers spaces, tabs and newlines to be word delimiters!
 *	 Also note that this might change in the future to all word delimiters
 *	 specified by Unicode!
 */
- (void)capitalize;

/**
 * \brief Inserts a string at the specified index.
 *
 * \param string The string to insert
 * \param index The index
 */
- (void)insertString: (OFString*)string

{
	if (self == [OFMutableString class])
		return (id)&placeholder;

	return [super alloc];
}

- (void)_convertWithWordStartTable: (const of_unichar_t *const[])startTable
		   wordMiddleTable: (const of_unichar_t *const[])middleTable
		wordStartTableSize: (size_t)startTableSize
	       wordMiddleTableSize: (size_t)middleTableSize
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	const of_unichar_t *string = [self unicodeString];
	size_t i, length = [self length];
	BOOL isStart = YES;

	for (i = 0; i < length; i++) {
		const of_unichar_t *const *table;
		size_t tableSize;
		of_unichar_t c = string[i];

		if (isStart) {
			table = startTable;
			tableSize = middleTableSize;
		} else {
			table = middleTable;
			tableSize = middleTableSize;
		}

		if (c >> 8 < tableSize && table[c >> 8][c & 0xFF])
			[self setCharacter: table[c >> 8][c & 0xFF]
				   atIndex: i];

		switch (c) {
		case ' ':
		case '\t':
		case '\n':
		case '\r':
			isStart = YES;
			break;
		default:
			isStart = NO;
			break;
		}
	}

	[pool release];
}

- (void)setCharacter: (of_unichar_t)character
	     atIndex: (size_t)index

		[self setCharacter: tmp
			   atIndex: i];
	}
}

- (void)uppercase
{
	[self _convertWithWordStartTable: of_unicode_uppercase_table
			 wordMiddleTable: of_unicode_uppercase_table
		      wordStartTableSize: OF_UNICODE_UPPERCASE_TABLE_SIZE
		     wordMiddleTableSize: OF_UNICODE_UPPERCASE_TABLE_SIZE];
}

- (void)lowercase
{
	[self _convertWithWordStartTable: of_unicode_lowercase_table
			 wordMiddleTable: of_unicode_lowercase_table
		      wordStartTableSize: OF_UNICODE_LOWERCASE_TABLE_SIZE
		     wordMiddleTableSize: OF_UNICODE_LOWERCASE_TABLE_SIZE];
}

- (void)capitalize
{
	[self _convertWithWordStartTable: of_unicode_titlecase_table
			 wordMiddleTable: of_unicode_lowercase_table
		      wordStartTableSize: OF_UNICODE_TITLECASE_TABLE_SIZE
		     wordMiddleTableSize: OF_UNICODE_LOWERCASE_TABLE_SIZE];
}

- (void)insertString: (OFString*)string
	     atIndex: (size_t)index
{
	@throw [OFNotImplementedException exceptionWithClass: isa
						    selector: _cmd];

@implementation OFMutableString_UTF8
+ (void)initialize
{
	if (self == [OFMutableString_UTF8 class])
		[self inheritMethodsFromClass: [OFString_UTF8 class]];
}

- (void)_convertWithWordStartTable: (const of_unichar_t *const[])startTable
		   wordMiddleTable: (const of_unichar_t *const[])middleTable
		wordStartTableSize: (size_t)startTableSize
	       wordMiddleTableSize: (size_t)middleTableSize
{

	of_unichar_t *unicodeString;
	size_t unicodeLen, newCStringLength;
	size_t i, j;
	char *newCString;
	BOOL isStart = YES;

	if (!s->UTF8) {
		uint8_t t;
		const of_unichar_t *const *table;
		size_t tableSize;

		assert(startTableSize >= 1 && middleTableSize >= 1);

		s->hashed = NO;

		for (i = 0; i < s->cStringLength; i++) {
			if (isStart) {
				table = startTable;
				tableSize = middleTableSize;
			} else {
				table = middleTable;
				tableSize = middleTableSize;
			}

			switch (s->cString[i]) {
			case ' ':
			case '\t':
			case '\n':
			case '\r':
				isStart = YES;
				break;
			default:
				isStart = NO;
				break;
			}

			if ((t = table[0][(uint8_t)s->cString[i]]) != 0)
				s->cString[i] = t;
		}

		return;
	}

	unicodeLen = [self length];
	unicodeString = [self allocMemoryWithSize: sizeof(of_unichar_t)
					    count: unicodeLen];

	i = j = 0;
	newCStringLength = 0;

	while (i < s->cStringLength) {
		const of_unichar_t *const *table;
		size_t tableSize;
		of_unichar_t c;
		size_t cLen;

		if (isStart) {
			table = startTable;
			tableSize = middleTableSize;
		} else {
			table = middleTable;
			tableSize = middleTableSize;
		}

		cLen = of_string_utf8_to_unicode(s->cString + i,
		    s->cStringLength - i, &c);

		if (cLen == 0 || c > 0x10FFFF) {
			[self freeMemory: unicodeString];
			@throw [OFInvalidEncodingException
			    exceptionWithClass: isa];
		}

		switch (c) {
		case ' ':
		case '\t':
		case '\n':
		case '\r':
			isStart = YES;
			break;
		default:
			isStart = NO;
			break;
		}

		if (c >> 8 < tableSize) {
			of_unichar_t tc = table[c >> 8][c & 0xFF];

			if (tc)
				c = tc;
		}

		[self freeMemory: unicodeString];
		@throw e;
	}

	j = 0;

	for (i = 0; i < unicodeLen; i++) {
		size_t d;

		if ((d = of_string_unicode_to_utf8(unicodeString[i],
		    newCString + j)) == 0) {
			[self freeMemory: unicodeString];
			[self freeMemory: newCString];
			@throw [OFInvalidEncodingException
			    exceptionWithClass: isa];
		}

/**
 * \brief Returns the string in lowercase.
 *
 * \return The string in lowercase
 */
- (OFString*)lowercaseString;

/**
 * \brief Returns the string capitalized.
 *
 * \note This only considers spaces, tab and newlines to be word delimiters!
 *	 Also note that this might change in the future to all word delimiters
 *	 specified by Unicode!
 *
 * \return The capitalized string
 */
- (OFString*)capitalizedString;

/**
 * \brief Creates a new string by deleting leading whitespaces.
 *
 * \return A new autoreleased OFString with leading whitespaces deleted
 */
- (OFString*)stringByDeletingLeadingWhitespaces;

}

- (OFString*)lowercaseString
{
	OFMutableString *new = [[self mutableCopy] autorelease];

	[new lowercase];

	[new makeImmutable];

	return new;
}

- (OFString*)capitalizedString
{
	OFMutableString *new = [[self mutableCopy] autorelease];

	[new capitalize];

	[new makeImmutable];

	return new;
}

- (OFString*)stringByDeletingLeadingWhitespaces