source/io/windows/console.cpp

   1 #include <msp/core/systemerror.h>
   2 #include "console.h"
   3 #include "handle_private.h"
   4
   5 using namespace std;
   6
   7 namespace {
   8
   9 DWORD stream_to_sys(Msp::IO::Console::Stream stream)
  10 {
  11         switch(stream)
  12         {
  13         case Msp::IO::Console::CIN: return STD_INPUT_HANDLE;
  14         case Msp::IO::Console::COUT: return STD_OUTPUT_HANDLE;
  15         case Msp::IO::Console::CERR: return STD_ERROR_HANDLE;
  16         default: throw invalid_argument("stream_to_sys");
  17         }
  18 }
  19
  20 } // namespace
  21
  22
  23 namespace Msp {
  24 namespace IO {
  25
  26 void Console::platform_init()
  27 {
  28         *handle = GetStdHandle(stream_to_sys(stream));
  29 }
  30
  31 Console::~Console()
  32 { }
  33
  34 void Console::set_local_echo(bool e)
  35 {
  36         check_access(M_READ);
  37
  38         DWORD m;
  39         GetConsoleMode(*handle, &m);
  40         SetConsoleMode(*handle, (m&~ENABLE_ECHO_INPUT) | (e?ENABLE_ECHO_INPUT:0));
  41 }
  42
  43 void Console::set_line_buffer(bool l)
  44 {
  45         check_access(M_READ);
  46
  47         DWORD m;
  48         if(!GetConsoleMode(*handle, &m))
  49                 throw system_error("GetConsoleMode");
  50         if(!SetConsoleMode(*handle, (m&~ENABLE_LINE_INPUT) | (l?ENABLE_LINE_INPUT:0)))
  51                 throw system_error("SetConsoleMode");
  52 }
  53
  54 void Console::get_size(unsigned &rows, unsigned &cols)
  55 {
  56         check_access(M_WRITE);
  57
  58         CONSOLE_SCREEN_BUFFER_INFO sbi;
  59         if(!GetConsoleScreenBufferInfo(*handle, &sbi))
  60                 throw system_error("GetConsoleScreenBufferInfo");
  61         // Right/bottom coords are inclusive
  62         rows = sbi.srWindow.Bottom+1-sbi.srWindow.Top;
  63         cols = sbi.srWindow.Right+1-sbi.srWindow.Left;
  64 }
  65
  66 void Console::redirect(Base &other)
  67 {
  68         SetStdHandle(stream_to_sys(stream), *other.get_handle(mode));
  69 }
  70
  71 } // namespace IO
  72 } // namespace Msp