56 lines
1.6 KiB
Go
56 lines
1.6 KiB
Go
/*
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Copyright 2022 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package printers
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import (
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"fmt"
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"io"
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)
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const (
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yellowColor = "\u001b[33;1m"
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resetColor = "\u001b[0m"
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)
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type WarningPrinter struct {
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// out is the writer to output warnings to
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out io.Writer
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// opts contains options controlling warning output
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opts WarningPrinterOptions
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}
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// WarningPrinterOptions controls the behavior of a WarningPrinter constructed using NewWarningPrinter()
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type WarningPrinterOptions struct {
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// Color indicates that warning output can include ANSI color codes
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Color bool
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}
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// NewWarningPrinter returns an implementation of warningPrinter that outputs warnings to the specified writer.
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func NewWarningPrinter(out io.Writer, opts WarningPrinterOptions) *WarningPrinter {
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h := &WarningPrinter{out: out, opts: opts}
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return h
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}
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// Print prints warnings to the configured writer.
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func (w *WarningPrinter) Print(message string) {
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if w.opts.Color {
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fmt.Fprintf(w.out, "%sWarning:%s %s\n", yellowColor, resetColor, message)
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} else {
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fmt.Fprintf(w.out, "Warning: %s\n", message)
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}
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}
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