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improve IsColorTerminal windows support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| //go:build !windows | ||
|
|
||
| package jsoncolor | ||
|
|
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| import ( | ||
| "io" | ||
| "os" | ||
|
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| "golang.org/x/term" | ||
| ) | ||
|
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| // IsColorTerminal returns true if w is a colorable terminal. | ||
| // It respects [NO_COLOR], [FORCE_COLOR] and TERM=dumb environment variables. | ||
| // | ||
| // [NO_COLOR]: https://no-color.org/ | ||
| // [FORCE_COLOR]: https://force-color.org/ | ||
| func IsColorTerminal(w io.Writer) bool { | ||
| if os.Getenv("NO_COLOR") != "" { | ||
| return false | ||
| } | ||
| if os.Getenv("FORCE_COLOR") != "" { | ||
| return true | ||
| } | ||
| if os.Getenv("TERM") == "dumb" { | ||
| return false | ||
| } | ||
|
|
||
| if w == nil { | ||
| return false | ||
| } | ||
|
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| f, ok := w.(*os.File) | ||
| if !ok { | ||
| return false | ||
| } | ||
|
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| if !term.IsTerminal(int(f.Fd())) { | ||
| return false | ||
| } | ||
|
|
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| return true | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| package jsoncolor | ||
|
|
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| import ( | ||
| "io" | ||
| "os" | ||
|
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| "golang.org/x/sys/windows" | ||
| ) | ||
|
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| // IsColorTerminal returns true if w is a colorable terminal. | ||
| // It respects [NO_COLOR], [FORCE_COLOR] and TERM=dumb environment variables. | ||
| // | ||
| // [NO_COLOR]: https://no-color.org/ | ||
| // [FORCE_COLOR]: https://force-color.org/ | ||
| func IsColorTerminal(w io.Writer) bool { | ||
| if os.Getenv("NO_COLOR") != "" { | ||
| return false | ||
| } | ||
| if os.Getenv("FORCE_COLOR") != "" { | ||
| return true | ||
| } | ||
| if os.Getenv("TERM") == "dumb" { | ||
| return false | ||
| } | ||
|
|
||
| if w == nil { | ||
| return false | ||
| } | ||
|
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| f, ok := w.(*os.File) | ||
| if !ok { | ||
| return false | ||
| } | ||
| fd := f.Fd() | ||
|
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| console := windows.Handle(fd) | ||
| var mode uint32 | ||
| if err := windows.GetConsoleMode(console, &mode); err != nil { | ||
| return false | ||
| } | ||
|
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| var want uint32 = windows.ENABLE_PROCESSED_OUTPUT | windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING | ||
| if (mode & want) == want { | ||
| return true | ||
| } | ||
|
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| mode |= want | ||
| if err := windows.SetConsoleMode(console, mode); err != nil { | ||
| return false | ||
| } | ||
|
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| return true | ||
| } |