"refactor(common): 重构序列化工具包，将serialize重命名为utils并添加bitset组件"

common/utils/log/term/sizes_unix.go

@@ -0,0 +1,35 @@
+// Copyright 2013 Apcera Inc. All rights reserved.
+
+// +build !windows
+
+package term
+
+import (
+	"errors"
+	"os"
+	"syscall"
+	"unsafe"
+)
+
+// ErrGetWinsizeFailed indicates that the system call to extract the size of
+// a Unix tty from the kernel failed.
+var ErrGetWinsizeFailed = errors.New("term: syscall.TIOCGWINSZ failed")
+
+// GetTerminalWindowSize returns the terminal size maintained by the kernel
+// for a Unix TTY, passed in as an *os.File.  This information can be seen
+// with the stty(1) command, and changes in size (eg, terminal emulator
+// resized) should trigger a SIGWINCH signal delivery to the foreground process
+// group at the time of the change, so a long-running process might reasonably
+// watch for SIGWINCH and arrange to re-fetch the size when that happens.
+func GetTerminalWindowSize(file *os.File) (*Size, error) {
+	// Based on source from from golang.org/x/crypto/ssh/terminal/util.go
+	var dimensions [4]uint16
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, file.Fd(), uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&dimensions)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	return &Size{
+		Lines:   int(dimensions[0]),
+		Columns: int(dimensions[1]),
+	}, nil
+}