void DS::Stream::writeSafeString(const ST::string& value, DS::StringType format)
{
if (format == e_StringUTF16) {
ST::utf16_buffer buffer = value.to_utf16();
uint16_t length = value.size() & 0x0FFF;
ST::utf16_buffer work;
char16_t* data = work.create_writable_buffer(length);
memcpy(data, buffer.data(), length * sizeof(char16_t));
for (uint16_t i=0; i<length; ++i)
data[i] = ~data[i];
write<uint16_t>(length | 0xF000);
writeBytes(data, length * sizeof(char16_t));
write<char16_t>(0);
} else {
ST::char_buffer buffer = (format == e_StringUTF8) ? value.to_utf8()
: value.to_latin_1(ST::substitute_invalid);
uint16_t length = value.size() & 0x0FFF;
ST::char_buffer work;
char* data = work.create_writable_buffer(length);
memcpy(data, buffer.data(), length * sizeof(char));
for (uint16_t i=0; i<length; ++i)
data[i] = ~data[i];
write<uint16_t>(length | 0xF000);
writeBytes(data, length * sizeof(char));
}
}
ST::string DS::Stream::readSafeString(DS::StringType format)
{
uint16_t length = read<uint16_t>();
if (!(length & 0xF000))
read<uint16_t>(); // Discarded
length &= 0x0FFF;
if (format == e_StringUTF16) {
ST::utf16_buffer result;
char16_t* buffer = result.create_writable_buffer(length);
ssize_t bytes = readBytes(buffer, length * sizeof(char16_t));
read<char16_t>(); // redundant u'\0'
DS_DASSERT(bytes == static_cast<ssize_t>(length * sizeof(char16_t)));
if (length && (buffer[0] & 0x8000)) {
for (uint16_t i=0; i<length; ++i)
buffer[i] = ~buffer[i];
}
buffer[length] = 0;
return ST::string::from_utf16(result, ST::substitute_invalid);
} else {
ST::char_buffer result;
char* buffer = result.create_writable_buffer(length);
ssize_t bytes = readBytes(buffer, length * sizeof(char));
DS_DASSERT(bytes == static_cast<ssize_t>(length * sizeof(char)));
if (length && (buffer[0] & 0x80)) {
for (uint16_t i=0; i<length; ++i)
buffer[i] = ~buffer[i];
}
buffer[length] = 0;
return (format == e_StringUTF8)
? ST::string::from_utf8(result, ST::substitute_invalid)
: ST::string::from_latin_1(result);
}
}
void DS::Stream::writeString(const ST::string& value, DS::StringType format)
{
if (format == e_StringUTF16) {
ST::utf16_buffer buffer = value.to_utf16();
writeBytes(buffer.data(), buffer.size() * sizeof(char16_t));
} else {
ST::char_buffer buffer = (format == e_StringUTF8) ? value.to_utf8()
: value.to_latin_1(ST::substitute_invalid);
writeBytes(buffer.data(), buffer.size() * sizeof(char));
}
}
ST::string CleanFileName(const ST::string& fname) {
ST::char_buffer result;
char* buf = result.create_writable_buffer(fname.size());
memcpy(buf, fname.c_str(), fname.size() + 1);
for (char* bp = buf; *bp; bp++) {
if (*bp == '?' || *bp == '*' || *bp == '<' || *bp == '>' ||
*bp == '"' || *bp == '|' || *bp < (char)0x20)
*bp = '_';
if (*bp == '/' || *bp == '\\' || *bp == ':')
*bp = '_';
}
return result;
}
ST::string FixSlashes(const ST::string& src) {
if (src.is_empty())
return src;
ST::char_buffer dest;
char* pbuf = dest.create_writable_buffer(src.size());
memcpy(pbuf, src.c_str(), src.size() + 1);
for (char* pc = pbuf; *pc != 0; pc++) {
if (*pc == '/' || *pc == '\\')
*pc = PATHSEP;
}
return dest;
}
ST::string DS::Stream::readString(size_t length, DS::StringType format)
{
if (format == e_StringUTF16) {
ST::utf16_buffer result;
char16_t* buffer = result.create_writable_buffer(length);
ssize_t bytes = readBytes(buffer, length * sizeof(char16_t));
DS_DASSERT(bytes == static_cast<ssize_t>(length * sizeof(char16_t)));
buffer[length] = 0;
return ST::string::from_utf16(result, ST::substitute_invalid);
} else {
ST::char_buffer result;
char* buffer = result.create_writable_buffer(length);
ssize_t bytes = readBytes(buffer, length * sizeof(char));
DS_DASSERT(bytes == static_cast<ssize_t>(length * sizeof(char)));
buffer[length] = 0;
return (format == e_StringUTF8) ? ST::string::from_utf8(result, ST::substitute_invalid)
: ST::string::from_latin_1(result);
}
}
