75 lines
1.8 KiB
Go
75 lines
1.8 KiB
Go
/*
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Copyright 2020 Docker Compose CLI authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package compose
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import (
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"context"
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"os"
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gosignal "os/signal"
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"runtime"
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"time"
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"github.com/buger/goterm"
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moby "github.com/docker/docker/api/types"
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"github.com/docker/docker/pkg/signal"
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)
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func (s *composeService) monitorTTySize(ctx context.Context, container string, resize func(context.Context, string, moby.ResizeOptions) error) {
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err := resize(ctx, container, moby.ResizeOptions{ // nolint:errcheck
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Height: uint(goterm.Height()),
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Width: uint(goterm.Width()),
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})
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if err != nil {
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return
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}
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sigchan := make(chan os.Signal, 1)
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gosignal.Notify(sigchan, signal.SIGWINCH)
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if runtime.GOOS == "windows" {
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// Windows has no SIGWINCH support, so we have to poll tty size ¯\_(ツ)_/¯
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go func() {
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prevH := goterm.Height()
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prevW := goterm.Width()
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for {
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time.Sleep(time.Millisecond * 250)
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h := goterm.Height()
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w := goterm.Width()
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if prevW != w || prevH != h {
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sigchan <- signal.SIGWINCH
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}
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prevH = h
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prevW = w
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}
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}()
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}
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go func() {
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for {
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select {
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case <-sigchan:
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resize(ctx, container, moby.ResizeOptions{ // nolint:errcheck
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Height: uint(goterm.Height()),
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Width: uint(goterm.Width()),
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})
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case <-ctx.Done():
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return
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}
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}
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}()
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}
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