56 lines
1.7 KiB
Go
56 lines
1.7 KiB
Go
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// Copyright 2018 Google Inc. All rights reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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// Package terminal provides a set of interfaces that can be used to interact
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// with the terminal (including falling back when the terminal is detected to
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// be a redirect or other dumb terminal)
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package terminal
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import (
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"io"
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"os"
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)
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// StdioInterface represents a set of stdin/stdout/stderr Reader/Writers
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type StdioInterface interface {
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Stdin() io.Reader
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Stdout() io.Writer
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Stderr() io.Writer
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}
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// StdioImpl uses the OS stdin/stdout/stderr to implement StdioInterface
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type StdioImpl struct{}
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func (StdioImpl) Stdin() io.Reader { return os.Stdin }
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func (StdioImpl) Stdout() io.Writer { return os.Stdout }
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func (StdioImpl) Stderr() io.Writer { return os.Stderr }
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var _ StdioInterface = StdioImpl{}
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type customStdio struct {
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stdin io.Reader
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stdout io.Writer
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stderr io.Writer
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}
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func NewCustomStdio(stdin io.Reader, stdout, stderr io.Writer) StdioInterface {
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return customStdio{stdin, stdout, stderr}
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}
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func (c customStdio) Stdin() io.Reader { return c.stdin }
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func (c customStdio) Stdout() io.Writer { return c.stdout }
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func (c customStdio) Stderr() io.Writer { return c.stderr }
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var _ StdioInterface = customStdio{}
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