status_t
BKeymap::SetTo(BDataIO& stream)
{
if (stream.Read(&fKeys, sizeof(fKeys)) < 1)
return B_IO_ERROR;
// convert from big-endian
for (uint32 i = 0; i < sizeof(fKeys) / 4; i++) {
((uint32*)&fKeys)[i] = B_BENDIAN_TO_HOST_INT32(((uint32*)&fKeys)[i]);
}
if (fKeys.version != 3)
return B_BAD_DATA;
if (stream.Read(&fCharsSize, sizeof(uint32)) < 1)
return B_IO_ERROR;
fCharsSize = B_BENDIAN_TO_HOST_INT32(fCharsSize);
if (fCharsSize > 16 * 1024) {
Unset();
return B_BAD_DATA;
}
delete[] fChars;
fChars = new char[fCharsSize];
if (stream.Read(fChars, fCharsSize) != (ssize_t)fCharsSize) {
Unset();
return B_IO_ERROR;
}
return B_OK;
}
status_t
IMAPFolder::_WriteStream(BFile& file, BDataIO& stream, size_t& length) const
{
char buffer[65535];
while (length > 0) {
ssize_t bytesRead = stream.Read(buffer,
std::min(sizeof(buffer), length));
if (bytesRead < 0)
return bytesRead;
if (bytesRead <= 0)
break;
length -= bytesRead;
ssize_t bytesWritten = file.Write(buffer, bytesRead);
if (bytesWritten < 0)
return bytesWritten;
if (bytesWritten != bytesRead)
return B_IO_ERROR;
}
return B_OK;
}
