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added support for NO_COLOR #586

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merged 3 commits into from
Sep 5, 2023
Merged

added support for NO_COLOR #586

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e8dbf2c
added support for NO_COLOR
Gaardsholt Sep 4, 2023
6a31fc3
added unit test for `NO_COLOR`
Gaardsholt Sep 4, 2023
04c188f
NO_COLOR can now be set to anything
Gaardsholt Sep 4, 2023
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5 changes: 5 additions & 0 deletions console.go
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Original file line number Diff line number Diff line change
Expand Up @@ -312,6 +312,11 @@ func needsQuote(s string) bool {

// colorize returns the string s wrapped in ANSI code c, unless disabled is true.
func colorize(s interface{}, c int, disabled bool) string {
e := os.Getenv("NO_COLOR")
if e == "true" {
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GNU libtextstyle doc says:

The environment variable NO_COLOR can be used to suppress styling in the textual output. When this environment variable is set (to any value), libtextstyle-enabled programs will not emit colors and other text styling.

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Ahh you are right, fixed the code now.

disabled = true
}

if disabled {
return fmt.Sprintf("%s", s)
}
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38 changes: 38 additions & 0 deletions console_test.go
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Expand Up @@ -104,6 +104,44 @@ func TestConsoleWriter(t *testing.T) {
}
})

t.Run("NO_COLOR = true", func(t *testing.T) {
os.Setenv("NO_COLOR", "true")

buf := &bytes.Buffer{}
w := zerolog.ConsoleWriter{Out: buf}

_, err := w.Write([]byte(`{"level": "warn", "message": "Foobar"}`))
if err != nil {
t.Errorf("Unexpected error when writing output: %s", err)
}

expectedOutput := "<nil> WRN Foobar\n"
actualOutput := buf.String()
if actualOutput != expectedOutput {
t.Errorf("Unexpected output %q, want: %q", actualOutput, expectedOutput)
}
os.Unsetenv("NO_COLOR")
})

t.Run("NO_COLOR = false", func(t *testing.T) {
os.Setenv("NO_COLOR", "false")

buf := &bytes.Buffer{}
w := zerolog.ConsoleWriter{Out: buf}

_, err := w.Write([]byte(`{"level": "warn", "message": "Foobar"}`))
if err != nil {
t.Errorf("Unexpected error when writing output: %s", err)
}

expectedOutput := "\x1b[90m<nil>\x1b[0m \x1b[31mWRN\x1b[0m Foobar\n"
actualOutput := buf.String()
if actualOutput != expectedOutput {
t.Errorf("Unexpected output %q, want: %q", actualOutput, expectedOutput)
}
os.Unsetenv("NO_COLOR")
})

t.Run("Write fields", func(t *testing.T) {
buf := &bytes.Buffer{}
w := zerolog.ConsoleWriter{Out: buf, NoColor: true}
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