54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
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// +build !windows
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package terminal
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import (
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"os"
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"golang.org/x/term"
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)
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// This is the implementation for all operating systems except Windows, where
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// we don't expect to need to do any special initialization to get a working
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// Virtual Terminal.
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//
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// For this implementation we just delegate everything upstream to
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// golang.org/x/term, since it already has a variety of different
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// implementations for quirks of more esoteric operating systems like plan9,
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// and will hopefully grow to include others as Go is ported to other platforms
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// in future.
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//
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// For operating systems that golang.org/x/term doesn't support either, it
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// defaults to indicating that nothing is a terminal and returns an error when
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// asked for a size, which we'll handle below.
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func configureOutputHandle(f *os.File) (*OutputStream, error) {
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return &OutputStream{
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File: f,
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isTerminal: isTerminalGolangXTerm,
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getColumns: getColumnsGolangXTerm,
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}, nil
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}
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func configureInputHandle(f *os.File) (*InputStream, error) {
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return &InputStream{
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File: f,
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isTerminal: isTerminalGolangXTerm,
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}, nil
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}
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func isTerminalGolangXTerm(f *os.File) bool {
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return term.IsTerminal(int(f.Fd()))
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}
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func getColumnsGolangXTerm(f *os.File) int {
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width, _, err := term.GetSize(int(f.Fd()))
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if err != nil {
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// Suggests that it's either not a terminal at all or that we're on
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// a platform that golang.org/x/term doesn't support. In both cases
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// we'll just return the placeholder default value.
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return defaultColumns
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}
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return width
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}
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