source/io/windows/console.cpp

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