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if ((t = table[0][*p]) != 0)
*p = t;
return;
}
ulen = [self length];
ustr = [self allocMemoryForNItems: [self length]
withSize: ulen];
i = 0;
j = 0;
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if ((t = table[0][*p]) != 0)
*p = t;
return;
}
ulen = [self length];
ustr = [self allocMemoryForNItems: ulen
withSize: sizeof(of_unichar_t)];
i = j = 0;
nlen = 0;
while (i < length) {
clen = of_string_utf8_to_unicode(string + i, length - i, &c);
if (clen == 0 || c > 0x10FFFF) {
[self freeMemory: ustr];
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- (void)setToCString: (const char*)str
{
size_t len;
[self freeMemory: string];
len = strlen(str);
switch (of_string_check_utf8(str, len)) {
case 0:
isUTF8 = NO;
break;
case 1:
isUTF8 = YES;
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- (void)setToCString: (const char*)str
{
size_t len;
[self freeMemory: string];
len = strlen(str);
if (len >= 3 && !memcmp(str, "\xEF\xBB\xBF", 3)) {
str += 3;
len -= 3;
}
switch (of_string_check_utf8(str, len)) {
case 0:
isUTF8 = NO;
break;
case 1:
isUTF8 = YES;
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}
- (void)appendCString: (const char*)str
{
size_t strlength;
strlength = strlen(str);
switch (of_string_check_utf8(str, strlength)) {
case 1:
isUTF8 = YES;
break;
case -1:
@throw [OFInvalidEncodingException newWithClass: isa];
}
string = [self resizeMemory: string
toSize: length + strlength + 1];
memcpy(string + length, str, strlength + 1);
length += strlength;
}
- (void)appendCString: (const char*)str
withLength: (size_t)len
{
switch (of_string_check_utf8(str, len)) {
case 1:
isUTF8 = YES;
break;
case -1:
@throw [OFInvalidEncodingException newWithClass: isa];
}
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}
- (void)appendCString: (const char*)str
{
size_t strlength;
strlength = strlen(str);
if (strlength >= 3 && !memcmp(str, "\xEF\xBB\xBF", 3)) {
str += 3;
strlength -= 3;
}
switch (of_string_check_utf8(str, strlength)) {
case 1:
isUTF8 = YES;
break;
case -1:
@throw [OFInvalidEncodingException newWithClass: isa];
}
string = [self resizeMemory: string
toSize: length + strlength + 1];
memcpy(string + length, str, strlength + 1);
length += strlength;
}
- (void)appendCString: (const char*)str
withLength: (size_t)len
{
if (len >= 3 && !memcmp(str, "\xEF\xBB\xBF", 3)) {
str += 3;
len -= 3;
}
switch (of_string_check_utf8(str, len)) {
case 1:
isUTF8 = YES;
break;
case -1:
@throw [OFInvalidEncodingException newWithClass: isa];
}
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atIndex: 0];
}
- (void)reverse
{
size_t i, j, len = length / 2;
madvise(string, len, MADV_SEQUENTIAL);
/* We reverse all bytes and restore UTF-8 later, if necessary */
for (i = 0, j = length - 1; i < len; i++, j--) {
string[i] ^= string[j];
string[j] ^= string[i];
string[i] ^= string[j];
}
if (!isUTF8) {
madvise(string, len, MADV_NORMAL);
return;
}
for (i = 0; i < length; i++) {
/* ASCII */
if (OF_LIKELY(!(string[i] & 0x80)))
continue;
/* A start byte can't happen first as we reversed everything */
if (OF_UNLIKELY(string[i] & 0x40)) {
madvise(string, len, MADV_NORMAL);
@throw [OFInvalidEncodingException newWithClass: isa];
}
/* Next byte must not be ASCII */
if (OF_UNLIKELY(length < i + 1 || !(string[i + 1] & 0x80))) {
madvise(string, len, MADV_NORMAL);
@throw [OFInvalidEncodingException newWithClass: isa];
}
/* Next byte is the start byte */
if (OF_LIKELY(string[i + 1] & 0x40)) {
string[i] ^= string[i + 1];
string[i + 1] ^= string[i];
string[i] ^= string[i + 1];
i++;
continue;
}
/* Second next byte must not be ASCII */
if (OF_UNLIKELY(length < i + 2 || !(string[i + 2] & 0x80))) {
madvise(string, len, MADV_NORMAL);
@throw [OFInvalidEncodingException newWithClass: isa];
}
/* Second next byte is the start byte */
if (OF_LIKELY(string[i + 2] & 0x40)) {
string[i] ^= string[i + 2];
string[i + 2] ^= string[i];
string[i] ^= string[i + 2];
i += 2;
continue;
}
/* Third next byte must not be ASCII */
if (OF_UNLIKELY(length < i + 3 || !(string[i + 3] & 0x80))) {
madvise(string, len, MADV_NORMAL);
@throw [OFInvalidEncodingException newWithClass: isa];
}
/* Third next byte is the start byte */
if (OF_LIKELY(string[i + 3] & 0x40)) {
string[i] ^= string[i + 3];
string[i + 3] ^= string[i];
string[i] ^= string[i + 3];
string[i + 1] ^= string[i + 2];
string[i + 2] ^= string[i + 1];
string[i + 1] ^= string[i + 2];
i += 3;
continue;
}
/* UTF-8 does not allow more than 4 bytes per character */
madvise(string, len, MADV_NORMAL);
@throw [OFInvalidEncodingException newWithClass: isa];
}
madvise(string, len, MADV_NORMAL);
}
- (void)upper
{
[self _applyTable: of_unicode_upper_table
withSize: OF_UNICODE_UPPER_TABLE_SIZE];
}
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atIndex: 0];
}
- (void)reverse
{
size_t i, j, len = length / 2;
madvise(string, length, MADV_SEQUENTIAL);
/* We reverse all bytes and restore UTF-8 later, if necessary */
for (i = 0, j = length - 1; i < len; i++, j--) {
string[i] ^= string[j];
string[j] ^= string[i];
string[i] ^= string[j];
}
if (!isUTF8) {
madvise(string, length, MADV_NORMAL);
return;
}
for (i = 0; i < length; i++) {
/* ASCII */
if (OF_LIKELY(!(string[i] & 0x80)))
continue;
/* A start byte can't happen first as we reversed everything */
if (OF_UNLIKELY(string[i] & 0x40)) {
madvise(string, length, MADV_NORMAL);
@throw [OFInvalidEncodingException newWithClass: isa];
}
/* Next byte must not be ASCII */
if (OF_UNLIKELY(length < i + 1 || !(string[i + 1] & 0x80))) {
madvise(string, length, MADV_NORMAL);
@throw [OFInvalidEncodingException newWithClass: isa];
}
/* Next byte is the start byte */
if (OF_LIKELY(string[i + 1] & 0x40)) {
string[i] ^= string[i + 1];
string[i + 1] ^= string[i];
string[i] ^= string[i + 1];
i++;
continue;
}
/* Second next byte must not be ASCII */
if (OF_UNLIKELY(length < i + 2 || !(string[i + 2] & 0x80))) {
madvise(string, length, MADV_NORMAL);
@throw [OFInvalidEncodingException newWithClass: isa];
}
/* Second next byte is the start byte */
if (OF_LIKELY(string[i + 2] & 0x40)) {
string[i] ^= string[i + 2];
string[i + 2] ^= string[i];
string[i] ^= string[i + 2];
i += 2;
continue;
}
/* Third next byte must not be ASCII */
if (OF_UNLIKELY(length < i + 3 || !(string[i + 3] & 0x80))) {
madvise(string, length, MADV_NORMAL);
@throw [OFInvalidEncodingException newWithClass: isa];
}
/* Third next byte is the start byte */
if (OF_LIKELY(string[i + 3] & 0x40)) {
string[i] ^= string[i + 3];
string[i + 3] ^= string[i];
string[i] ^= string[i + 3];
string[i + 1] ^= string[i + 2];
string[i + 2] ^= string[i + 1];
string[i + 1] ^= string[i + 2];
i += 3;
continue;
}
/* UTF-8 does not allow more than 4 bytes per character */
madvise(string, length, MADV_NORMAL);
@throw [OFInvalidEncodingException newWithClass: isa];
}
madvise(string, length, MADV_NORMAL);
}
- (void)upper
{
[self _applyTable: of_unicode_upper_table
withSize: OF_UNICODE_UPPER_TABLE_SIZE];
}
|