/*
* Copyright (c) 2008 - 2010
* Jonathan Schleifer <js@webkeks.org>
*
* All rights reserved.
*
* This file is part of ObjFW. 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.
*/
#include "config.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#import "OFXMLElement.h"
#import "OFString.h"
#import "OFExceptions.h"
int _OFXMLElement_reference;
@implementation OFString (OFXMLEscaping)
- (OFString*)stringByXMLEscaping
{
char *str_c, *append, *tmp;
size_t len, append_len;
size_t i, j;
OFString *ret;
j = 0;
len = length;
/*
* We can't use allocMemoryWithSize: here as it might be a @"" literal
*/
if ((str_c = malloc(len)) == NULL)
@throw [OFOutOfMemoryException newWithClass: isa
size: len];
for (i = 0; i < length; i++) {
switch (string[i]) {
case '<':
append = "<";
append_len = 4;
break;
case '>':
append = ">";
append_len = 4;
break;
case '"':
append = """;
append_len = 6;
break;
case '\'':
append = "'";
append_len = 6;
break;
case '&':
append = "&";
append_len = 5;
break;
default:
append = NULL;
append_len = 0;
}
if (append != NULL) {
if ((tmp = realloc(str_c, len + append_len)) == NULL) {
free(str_c);
@throw [OFOutOfMemoryException
newWithClass: isa
size: len + append_len];
}
str_c = tmp;
len += append_len - 1;
memcpy(str_c + j, append, append_len);
j += append_len;
} else
str_c[j++] = string[i];
}
assert(j == len);
@try {
ret = [OFString stringWithCString: str_c
length: len];
} @finally {
free(str_c);
}
return ret;
}
@end