ObjFW  Diff

/*
 * Copyright (c) 2008
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of libobjfw. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE included in
 * the packaging of this file.
 */

#import "config.h"

#import <stdio.h>
#import <stdlib.h>
#import <string.h>
#import <ctype.h>

#ifdef HAVE_SYS_MMAN_H
#import <sys/mman.h>
#else

	return [[self alloc] init];
}

+ newFromCString: (const char*)str
{
	return [[self alloc] initFromCString: str];
}

+ newFromFormatCString: (const char*)fmt, ...
{
	id ret;
	va_list args;

	va_start(args, fmt);
	ret = [[self alloc] initFromFormatCString: fmt
				    withArguments: args];
	va_end(args);

	return ret;
}

+ newFromFormatCString: (const char*)fmt
	 withArguments: (va_list)args
{
	return [[self alloc] initFromFormatCString: fmt
				     withArguments: args];
}

- init
{
	if ((self = [super init])) {
		length = 0;
		string = NULL;
		is_utf8 = NO;

				    newWithObject: self];
			}

			string = [self getMemWithSize: length + 1];
			memcpy(string, str, length + 1);
		}
	}

	return self;
}

- initFromFormatCString: (const char*)fmt, ...
{
	id ret;
	va_list args;

	va_start(args, fmt);
	ret = [self initFromFormatCString: fmt
			    withArguments: args];
	va_end(args);

	return ret;
}

- initFromFormatCString: (const char*)fmt
	  withArguments: (va_list)args
{
	int t;

	if ((self = [super init])) {
		if (fmt == NULL)
			@throw [OFInvalidFormatException newWithObject: self];

		if ((t = vasprintf(&string, fmt, args)) == -1)
			/*
			 * This is only the most likely error to happen.
			 * Unfortunately, as errno isn't always thread-safe,
			 * there's no good way for us to find out what really
			 * happened.
			 */
			@throw [OFNoMemException newWithObject: self];
		length = t;

		switch (check_utf8(string, length)) {
		case 1:
			is_utf8 = YES;
			break;
		case -1:
			free(string);
			[super free];
			@throw [OFInvalidEncodingException newWithObject: self];
		}

		@try {
			[self addToMemoryPool: string];
		} @catch (OFException *e) {
			free(string);
			@throw e;
		}
	}

	return self;
}

- (const char*)cString
{
	return string;

	newstr = [self resizeMem: string
			  toSize: newlen + 1];

	memcpy(newstr + length, str, strlength + 1);

	length = newlen;
	string = newstr;

	return self;
}

- appendWithFormatCString: (const char*)fmt, ...
{
	id ret;
	va_list args;

	va_start(args, fmt);
	ret = [self appendWithFormatCString: fmt
			       andArguments: args];
	va_end(args);

	return ret;
}

- appendWithFormatCString: (const char*)fmt
	     andArguments: (va_list)args
{
	char *t;

	if (fmt == NULL)
		@throw [OFInvalidFormatException newWithObject: self];

	if ((vasprintf(&t, fmt, args)) == -1)
		/*
		 * This is only the most likely error to happen.
		 * Unfortunately, as errno isn't always thread-safe, there's
		 * no good way for us to find out what really happened.
		 */
		@throw [OFNoMemException newWithObject: self];

	[self appendCString: t];
	free(t);

	return self;
}

- reverse
{
	size_t i, j, len = length / 2;