#include <fcntl.h>
#include <unistd.h>
#endif
-#include <msp/strings/formatter.h>
-#include "except.h"
+#include <msp/strings/format.h>
+#include <msp/core/systemerror.h>
#include "file.h"
+#include "handle_private.h"
using namespace std;
File::File(const string &fn, Mode m, CreateMode cm)
{
if(!(m&M_RDWR))
- throw InvalidParameterValue("Invalid read/write mode");
+ throw invalid_argument("File::File mode");
if(cm&~(C_CREATE|C_TRUNCATE))
- throw InvalidParameterValue("Invalid create mode");
+ throw invalid_argument("File::File create");
mode = m;
}
}
- handle = CreateFile(fn.c_str(), flags, 0, 0, create_flags, FILE_ATTRIBUTE_NORMAL, 0);
- if(handle==INVALID_HANDLE_VALUE)
+ *handle = CreateFile(fn.c_str(), flags, 0, 0, create_flags, FILE_ATTRIBUTE_NORMAL, 0);
+ if(!handle)
{
int err = GetLastError();
if(err==ERROR_FILE_NOT_FOUND)
- throw FileNotFound("Can't find file "+fn, fn);
+ throw file_not_found(fn);
else
- throw SystemError(format("Can't open file '%s'", fn), GetLastError());
+ throw system_error(format("CreateFile(%s)", fn), err);
}
#else
int flags = 0;
if(mode&M_NONBLOCK)
flags |= O_NONBLOCK;
- handle = ::open(fn.c_str(), flags, 0666);
- if(handle==-1)
+ *handle = ::open(fn.c_str(), flags, 0666);
+ if(!handle)
{
int err = errno;
if(err==ENOENT)
- throw FileNotFound("Can't find file "+fn, fn);
+ throw file_not_found(fn);
else
- throw SystemError(format("Can't open file '%s'", fn), err);
+ throw system_error(format("open(%s)", fn), err);
}
#endif
-
- set_events(P_INPUT);
}
File::~File()
{
- close();
-}
-
-void File::close()
-{
- if(handle==MSP_IO_INVALID_HANDLE)
- return;
-
- set_events(P_NONE);
-
signal_flush_required.emit();
-
-#ifdef WIN32
- CloseHandle(handle);
-#else
- ::close(handle);
-#endif
-
- handle = MSP_IO_INVALID_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);
#ifndef WIN32
- int flags = fcntl(handle, F_GETFD);
- fcntl(handle, F_SETFL, (flags&O_NONBLOCK)|(b?0:O_NONBLOCK));
+ int flags = fcntl(*handle, F_GETFD);
+ fcntl(*handle, F_SETFL, (flags&O_NONBLOCK)|(b?0:O_NONBLOCK));
#endif
}
#ifdef WIN32
if(mode&M_APPEND)
seek(0, S_END);
- DWORD ret;
- if(WriteFile(handle, buf, size, &ret, 0)==0)
- throw SystemError("Writing to file failed", GetLastError());
-#else
- int ret = ::write(handle, buf, size);
- if(ret==-1)
- {
- if(errno==EAGAIN)
- return 0;
- else
- throw SystemError("Writing to file failed", errno);
- }
#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 SystemError("Reading from file failed", GetLastError());
-#else
- int ret = ::read(handle, buf, size);
- if(ret==-1)
- {
- if(errno==EAGAIN)
- return 0;
- else
- throw SystemError("Reading from file failed", errno);
- }
-#endif
-
+ unsigned ret = sys_read(handle, buf, size);
if(ret==0)
- {
- eof_flag = true;
- signal_end_of_file.emit();
- }
+ set_eof();
return ret;
}
#ifndef WIN32
signal_flush_required.emit();
- fsync(handle);
+ fsync(*handle);
#endif
}
-int 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 SystemError("Seek failed", GetLastError());
-#else
- int ret = lseek(handle, off, type);
- if(ret==-1)
- throw SystemError("Seek failed", errno);
-#endif
-
+ off = sys_seek(handle, off, type);
eof_flag = false;
- return ret;
+ return off;
}
-int File::tell() const
+SeekOffset File::tell() const
{
- check_access(M_NONE);
-
-#ifdef WIN32
- DWORD ret = SetFilePointer(handle, 0, 0, FILE_CURRENT);
- if(ret==INVALID_SET_FILE_POINTER)
- throw SystemError("Tell failed", GetLastError());
-#else
- int ret = lseek(handle, 0, SEEK_CUR);
- if(ret==-1)
- throw SystemError("Tell failed", errno);
-#endif
-
- return ret;
+ return sys_seek(const_cast<Handle &>(handle), 0, S_CUR);
}
-void File::check_access(Mode m) const
+const Handle &File::get_handle(Mode m)
{
- if(handle==MSP_IO_INVALID_HANDLE)
- throw InvalidState("File is not open");
- if(m==M_READ && !(mode&M_READ))
- throw InvalidState("File is not readable");
- if(m==M_WRITE && !(mode&M_WRITE))
- throw InvalidState("File is not writable");
+ check_access(m);
+ return handle;
}
} // namespace IO