61 lines
1.4 KiB
Go
61 lines
1.4 KiB
Go
// +build windows
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package windows
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import (
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"io"
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"os"
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"syscall"
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"github.com/Azure/go-ansiterm/winterm"
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)
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// ConsoleStreams returns a wrapped version for each standard stream referencing a console,
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// that handles ANSI character sequences.
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func ConsoleStreams() (stdIn io.ReadCloser, stdOut, stdErr io.Writer) {
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if IsConsole(os.Stdin.Fd()) {
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stdIn = newAnsiReader(syscall.STD_INPUT_HANDLE)
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} else {
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stdIn = os.Stdin
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}
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if IsConsole(os.Stdout.Fd()) {
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stdOut = newAnsiWriter(syscall.STD_OUTPUT_HANDLE)
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} else {
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stdOut = os.Stdout
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}
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if IsConsole(os.Stderr.Fd()) {
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stdErr = newAnsiWriter(syscall.STD_ERROR_HANDLE)
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} else {
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stdErr = os.Stderr
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}
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return stdIn, stdOut, stdErr
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}
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// GetHandleInfo returns file descriptor and bool indicating whether the file is a console.
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func GetHandleInfo(in interface{}) (uintptr, bool) {
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switch t := in.(type) {
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case *ansiReader:
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return t.Fd(), true
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case *ansiWriter:
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return t.Fd(), true
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}
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var inFd uintptr
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var isTerminal bool
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if file, ok := in.(*os.File); ok {
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inFd = file.Fd()
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isTerminal = IsConsole(inFd)
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}
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return inFd, isTerminal
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}
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// IsConsole returns true if the given file descriptor is a Windows Console.
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// The code assumes that GetConsoleMode will return an error for file descriptors that are not a console.
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func IsConsole(fd uintptr) bool {
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_, e := winterm.GetConsoleMode(fd)
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return e == nil
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}
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