throw system_error(format("open(%s)", fn), err);
}
#endif
-
- set_events(P_INPUT);
}
File::~File()
{
- close();
-}
-
-void File::close()
-{
- if(!handle)
- return;
-
- set_events(P_NONE);
-
signal_flush_required.emit();
-
-#ifdef WIN32
- CloseHandle(*handle);
-#else
- ::close(*handle);
-#endif
-
- handle = Handle();
- signal_closed.emit();
+ sys_close(handle);
}
void File::set_block(bool b)
{
- check_access(M_NONE);
-
mode = (mode&~M_NONBLOCK);
if(b)
mode = (mode|M_NONBLOCK);
#ifdef WIN32
if(mode&M_APPEND)
seek(0, S_END);
- DWORD ret;
- if(WriteFile(*handle, buf, size, &ret, 0)==0)
- throw system_error("WriteFile");
-#else
- int ret = ::write(*handle, buf, size);
- if(ret==-1)
- {
- if(errno==EAGAIN)
- return 0;
- else
- throw system_error("write");
- }
#endif
- return ret;
+ return sys_write(handle, buf, size);
}
unsigned File::do_read(char *buf, unsigned size)
if(size==0)
return 0;
-#ifdef WIN32
- DWORD ret;
- if(ReadFile(*handle, buf, size, &ret, 0)==0)
- throw system_error("ReadFile");
-#else
- int ret = ::read(*handle, buf, size);
- if(ret==-1)
- {
- if(errno==EAGAIN)
- return 0;
- else
- throw system_error("read");
- }
-#endif
-
+ unsigned ret = sys_read(handle, buf, size);
if(ret==0)
- {
- eof_flag = true;
- signal_end_of_file.emit();
- }
+ set_eof();
return ret;
}
#endif
}
-unsigned File::seek(int off, SeekType st)
+SeekOffset File::seek(SeekOffset off, SeekType type)
{
- check_access(M_NONE);
-
signal_flush_required.emit();
-
- int type = sys_seek_type(st);
-#ifdef WIN32
- DWORD ret = SetFilePointer(*handle, off, 0, type);
- if(ret==INVALID_SET_FILE_POINTER)
- throw system_error("SetFilePointer");
-#else
- off_t ret = lseek(*handle, off, type);
- if(ret==(off_t)-1)
- throw system_error("lseek");
-#endif
-
+ off = sys_seek(handle, off, type);
eof_flag = false;
- return ret;
-}
-
-unsigned File::tell() const
-{
- check_access(M_NONE);
-
-#ifdef WIN32
- DWORD ret = SetFilePointer(*handle, 0, 0, FILE_CURRENT);
- if(ret==INVALID_SET_FILE_POINTER)
- throw system_error("SetFilePointer");
-#else
- off_t ret = lseek(*handle, 0, SEEK_CUR);
- if(ret==(off_t)-1)
- throw system_error("lseek");
-#endif
-
- return ret;
+ return off;
}
-void File::check_access(Mode m) const
+SeekOffset File::tell() const
{
- if(!handle || (m && !(mode&m)))
- throw invalid_access(m);
+ return sys_seek(const_cast<Handle &>(handle), 0, S_CUR);
}
} // namespace IO