[pclasses-devel] IODevice's and IOStream

[Christian P. <cp...@se...>]

Hi !

The new I/O code (pclasses2) should now be usable - please test it.
Currently available IODevice's:

System::Pipe - Anonymous pipe's
System::File - File I/O class 
System::ProcessIO - Used to comminucate with child processes through anonymous 
pipes.
Net::Socket - Used for Network communication

Cause the I/O architecture is fully polymorphic, you can now write fully I/O 
device independent code:

-- cut --
void copy(IODevice& src, IODevice& dest)
{
 while(!src.eof())
 {
  char tmp[1024];
  size_t read = src.read(tmp, sizeof(tmp));
  dest.write(tmp, read);
 }
}

// copy test.txt to process stdin
File f("test.txt", File::Read);
Process proc("tmpbin");
proc.start(Process::RedirectAll);

// copy data ...
copy(f, proc.processIO());
-- cut --

Cool eh?

Missing devices:
Memory(Mapped)File, NamedPipe, SerialDevice, ParallelDevice(?)


IOStream should also work - please test it, cause documentation about 
extending std::streambuf is rare on the net, it's likely to fail.

-- cut --
File f("test.txt", File::Read); // open "test.txt" for reading
IOStream strm(f); // create I/O stream
std::string str;
strm >> str;  // read string from test.txt
-- cut --


Greetings, 
Christian