source/io/base.cpp

   1 #include "base.h"
   2 #include "poll.h"
   3
   4 using namespace std;
   5
   6 namespace Msp {
   7 namespace IO {
   8
   9 Base::Base():
  10         mode(M_READ),
  11         eof_flag(false)
  12 { }
  13
  14 Base::~Base()
  15 {
  16         signal_deleted.emit();
  17 }
  18
  19 void Base::check_access(Mode m) const
  20 {
  21         if(!(mode&m))
  22                 throw invalid_access(m);
  23 }
  24
  25 bool Base::getline(string &line)
  26 {
  27         line.clear();
  28
  29         if(eof_flag)
  30                 return false;
  31
  32         while(1)
  33         {
  34                 int c = get();
  35                 if(c==-1 || c=='\n')
  36                         break;
  37                 line += c;
  38         }
  39
  40         return !eof_flag || !line.empty();
  41 }
  42
  43 int Base::get()
  44 {
  45         char c;
  46         if(do_read(&c, 1)==0)
  47                 return -1;
  48         return static_cast<unsigned char>(c);
  49 }
  50
  51 void Base::set_eof()
  52 {
  53         if(!eof_flag)
  54         {
  55                 eof_flag = true;
  56                 signal_end_of_file.emit();
  57         }
  58 }
  59
  60 const Handle &Base::get_handle(Mode)
  61 {
  62         throw logic_error("Base::get_handle");
  63 }
  64
  65 } // namespace IO
  66 } // namespace Msp