#include "shell.hpp"

// open a file, and read chunks of data until we reach EOF, 
// printing the data found to stdout
void shell::c_cat (std::string args)
{
  // sanity checks
  if ( ! cwd_.exists (args) )
  {
    carp ("No such file: " + args);
    return;
  }

  if ( cwd_.is_dir (args) )
  {
    carp ("Cannot cat directory: " + args);
    return;
  }

  // open the current directory as filesystem dir
  saga::filesystem::directory dir (cwd_.get_url ());

  // open the file
  saga::filesystem::file file = dir.open (args, saga::filesystem::Read);

  while ( true )
  {
    saga::size_t const n = 1024*64;
    saga::uint8_t data[n+1];

    for ( unsigned int i = 0; i <= n; ++i ) { data[i] = '\0'; }

    // read a chunk into the buffer
    if ( file.read (saga::buffer (data, n), n) )
    {
      // show what we found
      std::cout << data;
    }
    else
    {
      break;
    }
  }

  // file closes when going out of scope
  return;
}