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* We don't use OFString in this file for performance reasons!
*
* We already have a clue about how big the resulting string will get, so we
* can prealloc and only resize when really necessary - OFString would always
* resize when we append, which would be slow here.
*/
static inline BOOL
xf_resize_chars(char **str, size_t *len, size_t add)
{
char *str2;
size_t len2;
if (add > SIZE_MAX - *len)
@throw [OFOutOfRangeException newWithObject: nil];
len2 = *len + add;
if ((str2 = realloc(*str, len2)) == NULL) {
if (*str)
free(*str);
*str = NULL;
return NO;
}
*str = str2;
*len = len2;
return YES;
}
BOOL
xf_add2chars(char **str, size_t *len, size_t *pos, const char *add)
{
size_t add_len;
add_len = strlen(add);
if (!xf_resize_chars(str, len, add_len))
return NO;
memcpy(*str + *pos, add, add_len);
*pos += add_len;
return YES;
@throw [OFOutOfRangeException newWithObject: nil];
nlen++;
if ((ret = malloc(nlen)) == NULL)
@throw [OFNoMemException newWithObject: nil
andSize: nlen];
for (i = j = 0; i < len; i++) {
switch (s[i]) {
case '<':
if (OF_UNLIKELY(!xf_add2chars(&ret, &nlen, &j, "<")))
@throw [OFNoMemException
newWithObject: nil
andSize: nlen + 4];
break;
case '>':
if (OF_UNLIKELY(!xf_add2chars(&ret, &nlen, &j, ">")))
@throw [OFNoMemException
newWithObject: nil
andSize: nlen + 4];
break;
case '"':
if (OF_UNLIKELY(!xf_add2chars(&ret, &nlen, &j,
""")))
@throw [OFNoMemException
newWithObject: nil
andSize: nlen + 6];
break;
case '\'':
if (OF_UNLIKELY(!xf_add2chars(&ret, &nlen, &j,
"'")))
@throw [OFNoMemException
newWithObject: nil
andSize: nlen + 6];
break;
case '&':
if (OF_UNLIKELY(!xf_add2chars(&ret, &nlen, &j,
"&")))
@throw [OFNoMemException
newWithObject: nil
andSize: nlen + 5];
break;
default:
ret[j++] = s[i];
break;
}
}
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* We don't use OFString in this file for performance reasons!
*
* We already have a clue about how big the resulting string will get, so we
* can prealloc and only resize when really necessary - OFString would always
* resize when we append, which would be slow here.
*/
static inline void
xf_resize_chars(char **str, size_t *len, size_t add, Class class)
{
char *str2;
size_t len2;
if (add > SIZE_MAX - *len)
@throw [OFOutOfRangeException newWithClass: class];
len2 = *len + add;
if ((str2 = realloc(*str, len2)) == NULL) {
if (*str)
free(*str);
*str = NULL;
@throw [OFNoMemException newWithClass: class
andSize: len2];
}
*str = str2;
*len = len2;
}
static inline void
xf_add2chars(char **str, size_t *len, size_t *pos, const char *add, Class class)
{
size_t add_len;
add_len = strlen(add);
xf_resize_chars(str, len, add_len, class);
memcpy(*str + *pos, add, add_len);
*pos += add_len;
}
@implementation OFXMLFactory
+ (char*)escapeCString: (const char*)s
{
char *ret;
size_t i, j, len, nlen;
len = nlen = strlen(s);
if (SIZE_MAX - len < 1)
@throw [OFOutOfRangeException newWithClass: self];
nlen++;
if ((ret = malloc(nlen)) == NULL)
@throw [OFNoMemException newWithClass: self
andSize: nlen];
for (i = j = 0; i < len; i++) {
switch (s[i]) {
case '<':
xf_add2chars(&ret, &nlen, &j, "<", self);
break;
case '>':
xf_add2chars(&ret, &nlen, &j, ">", self);
break;
case '"':
xf_add2chars(&ret, &nlen, &j, """, self);
break;
case '\'':
xf_add2chars(&ret, &nlen, &j, "'", self);
break;
case '&':
xf_add2chars(&ret, &nlen, &j, "&", self);
break;
default:
ret[j++] = s[i];
break;
}
}
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char *arg, *val, *xml;
size_t i, len;
va_list args;
/* Start of tag */
len = strlen(name);
if (SIZE_MAX - len < 3)
@throw [OFOutOfRangeException newWithObject: nil];
len += 3;
if ((xml = malloc(len)) == NULL)
@throw [OFNoMemException newWithObject: nil
andSize: len];
i = 0;
xml[i++] = '<';
memcpy(xml + i, name, strlen(name));
i += strlen(name);
/* Arguments */
va_start(args, data);
while ((arg = va_arg(args, char*)) != NULL &&
(val = va_arg(args, char*)) != NULL) {
char *esc_val;
if (OF_UNLIKELY((esc_val =
[OFXMLFactory escapeCString: val]) == NULL)) {
/*
* escapeCString already throws an exception,
* no need to throw a second one here.
*/
free(xml);
return NULL;
}
if (OF_UNLIKELY(!xf_resize_chars(&xml, &len, 1 + strlen(arg) +
2 + strlen(esc_val) + 1))) {
free(esc_val);
@throw [OFNoMemException
newWithObject: nil
andSize: len + 1 + strlen(arg) + 2 +
strlen(esc_val) + 1];
}
}
va_end(args);
/* End of tag */
if (close) {
if (data == NULL) {
if (!xf_resize_chars(&xml, &len, 2 - 1))
@throw [OFNoMemException
newWithObject: nil
andSize: len + 2 - 1];
xml[i++] = '/';
xml[i++] = '>';
} else {
if (!xf_resize_chars(&xml, &len, 1 + strlen(data) +
2 + strlen(name) + 1 - 1))
@throw [OFNoMemException
newWithObject: nil
andSize: len + 1 + strlen(data) + 2 +
strlen(name) + 1 - 1];
xml[i++] = '>';
memcpy(xml + i, data, strlen(data));
i += strlen(data);
xml[i++] = '<';
xml[i++] = '/';
memcpy(xml + i, name, strlen(name));
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char *arg, *val, *xml;
size_t i, len;
va_list args;
/* Start of tag */
len = strlen(name);
if (SIZE_MAX - len < 3)
@throw [OFOutOfRangeException newWithClass: self];
len += 3;
if ((xml = malloc(len)) == NULL)
@throw [OFNoMemException newWithClass: self
andSize: len];
i = 0;
xml[i++] = '<';
memcpy(xml + i, name, strlen(name));
i += strlen(name);
/* Arguments */
va_start(args, data);
while ((arg = va_arg(args, char*)) != NULL &&
(val = va_arg(args, char*)) != NULL) {
char *esc_val = NULL;
@try {
esc_val = [OFXMLFactory escapeCString: val];
} @catch (OFException *e) {
free(xml);
@throw e;
}
@try {
xf_resize_chars(&xml, &len, 1 + strlen(arg) + 2 +
strlen(esc_val) + 1, self);
xml[i++] = ' ';
memcpy(xml + i, arg, strlen(arg));
i += strlen(arg);
xml[i++] = '=';
xml[i++] = '\'';
memcpy(xml + i, esc_val, strlen(esc_val));
i += strlen(esc_val);
xml[i++] = '\'';
} @finally {
free(esc_val);
}
}
va_end(args);
/* End of tag */
if (close) {
if (data == NULL) {
xf_resize_chars(&xml, &len, 2 - 1, self);
xml[i++] = '/';
xml[i++] = '>';
} else {
xf_resize_chars(&xml, &len, 1 + strlen(data) + 2 +
strlen(name) + 1 - 1, self);
xml[i++] = '>';
memcpy(xml + i, data, strlen(data));
i += strlen(data);
xml[i++] = '<';
xml[i++] = '/';
memcpy(xml + i, name, strlen(name));
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size_t i, len, pos;
if (strs[0] == NULL)
return NULL;
len = strlen(*strs);
if (SIZE_MAX - len < 1)
@throw [OFOutOfRangeException newWithObject: nil];
len++;
if ((ret = malloc(len)) == NULL)
@throw [OFNoMemException newWithObject: nil
andSize: len];
memcpy(ret, strs[0], len - 1);
pos = len - 1;
for (i = 1; strs[i] != NULL; i++) {
if (OF_UNLIKELY(!xf_add2chars(&ret, &len, &pos, strs[i]))) {
free(ret);
@throw [OFNoMemException
newWithObject: nil
andSize: len + strlen(strs[i])];
}
}
for (i = 0; strs[i] != NULL; i++)
free(strs[i]);
ret[pos] = 0;
return ret;
}
@end
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size_t i, len, pos;
if (strs[0] == NULL)
return NULL;
len = strlen(*strs);
if (SIZE_MAX - len < 1)
@throw [OFOutOfRangeException newWithClass: self];
len++;
if ((ret = malloc(len)) == NULL)
@throw [OFNoMemException newWithClass: self
andSize: len];
memcpy(ret, strs[0], len - 1);
pos = len - 1;
for (i = 1; strs[i] != NULL; i++)
xf_add2chars(&ret, &len, &pos, strs[i], self);
for (i = 0; strs[i] != NULL; i++)
free(strs[i]);
ret[pos] = 0;
return ret;
}
@end
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