C++ FileName::removeFile方法代码示例

bool TextClass::read(std::string const & str, ReadType rt) 
{
	Lexer lexrc(textClassTags);
	istringstream is(str);
	lexrc.setStream(is);
	ReturnValues retval = read(lexrc, rt);

	if (retval != FORMAT_MISMATCH) 
		return retval == OK;

	// write the layout string to a temporary file
	FileName const tempfile = FileName::tempName("TextClass_read");
	ofstream os(tempfile.toFilesystemEncoding().c_str());
	if (!os) {
		LYXERR0("Unable to create temporary file");
		return false;
	}
	os << str;
	os.close();

	// now try to convert it
	bool const worx = convertLayoutFormat(tempfile, rt);
	if (!worx) {
		LYXERR0("Unable to convert internal layout information to format " 
			<< LAYOUT_FORMAT);
	}
	tempfile.removeFile();
	return worx;
}

bool SpecialisedMover::do_rename(FileName const & from, FileName const & to,
				 string const & latex) const
{
	if (command_.empty())
		return Mover::do_rename(from, to, latex);

	if (!do_copy(from, to, latex))
		return false;
	return from.removeFile();
}

bool TextClass::convertLayoutFormat(support::FileName const & filename, ReadType rt)
{
	LYXERR(Debug::TCLASS, "Converting layout file to " << LAYOUT_FORMAT);
	FileName const tempfile = FileName::tempName("convert_layout");
	bool success = layout2layout(filename, tempfile);
	if (success)
		success = readWithoutConv(tempfile, rt) == OK;
	tempfile.removeFile();
	return success;
}

// Returns a local socket already in the "listen" state (or -1 in case
// of error). The first argument is the socket address, the second
// is the length of the queue for connections. If successful, a socket
// special file 'name' will be created in the filesystem.
int listen(FileName const & name, int queue)
{
	int fd; // File descriptor for the socket
	sockaddr_un addr; // Structure that hold the socket address

	// We use 'localname' to fill 'addr'
	string const localname = name.toFilesystemEncoding();
	string::size_type len = localname.size();
	// the field sun_path in sockaddr_un is a char[108]
	if (len > 107) {
		LYXERR0("lyx: Socket address '" << name.absFileName() << "' too long.");
		return -1;
	}
	// Synonims for AF_UNIX are AF_LOCAL and AF_FILE
	addr.sun_family = AF_UNIX;
	localname.copy(addr.sun_path, 107);
	addr.sun_path[len] = '\0';

	// This creates a file descriptor for the socket
	// Synonims for PF_UNIX are PF_LOCAL and PF_FILE
	// For local sockets, the protocol is always 0
	// socket() returns -1 in case of error
	if ((fd = ::socket(PF_UNIX, SOCK_STREAM, 0))== -1) {
		LYXERR0("lyx: Could not create socket descriptor: "
		       << strerror(errno));
		return -1;
	}

	// Set NONBLOCK mode for the file descriptor
	if (::fcntl(fd, F_SETFL, O_NONBLOCK) == -1) {
		LYXERR0("lyx: Could not set NONBLOCK mode for socket descriptor: "
		     << strerror(errno));
		::close(fd);
		return -1;
	}

	// bind() gives the local address 'name' for 'fd', also creating
	// the socket special file in the filesystem. bind() returns -1
	// in case of error
	if ((::bind (fd, reinterpret_cast<sockaddr *>(&addr), SUN_LEN(&addr))) == -1) {
		LYXERR0("lyx: Could not bind address '" << name.absFileName()
		       << "' to socket descriptor: " << strerror(errno));
		::close(fd);
		name.removeFile();
		return -1;
	}

	// Puts the socket in listen state, that is, ready to accept
	// connections. The second parameter of listen() defines the
	// maximum length the queue of pending connections may grow to.
	// It is not a restriction on the number of connections the socket
	// can accept. Returns -1 in case of error
	if (::listen (fd, queue) == -1) {
		LYXERR0("lyx: Could not put socket in 'listen' state: "
		       << strerror(errno));
		::close(fd);
		name.removeFile();
		return -1;
	}

	return fd;
}