昔念
ffc39f5462
- 移除了 github.com/scylladb/termtables 依赖 - 修改了 bitset 包，移除了未使用的代码和测试 - 修改了 log 包，移除了未使用的代码和测试 - 更新了 go.work 文件，添加了 bitset 和 log 包
36 lines
1.2 KiB
Go
36 lines
1.2 KiB
Go
// Copyright 2013 Apcera Inc. All rights reserved.
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// +build !windows
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package term
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import (
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"errors"
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"os"
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"syscall"
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"unsafe"
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)
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// ErrGetWinsizeFailed indicates that the system call to extract the size of
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// a Unix tty from the kernel failed.
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var ErrGetWinsizeFailed = errors.New("term: syscall.TIOCGWINSZ failed")
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// GetTerminalWindowSize returns the terminal size maintained by the kernel
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// for a Unix TTY, passed in as an *os.File. This information can be seen
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// with the stty(1) command, and changes in size (eg, terminal emulator
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// resized) should trigger a SIGWINCH signal delivery to the foreground process
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// group at the time of the change, so a long-running process might reasonably
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// watch for SIGWINCH and arrange to re-fetch the size when that happens.
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func GetTerminalWindowSize(file *os.File) (*Size, error) {
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// Based on source from from golang.org/x/crypto/ssh/terminal/util.go
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var dimensions [4]uint16
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if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, file.Fd(), uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&dimensions)), 0, 0, 0); err != 0 {
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return nil, err
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}
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return &Size{
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Lines: int(dimensions[0]),
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Columns: int(dimensions[1]),
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}, nil
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}
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