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bee/color.go

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2016-07-31 21:21:20 +00:00
// Copyright 2013 bee authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package main
import "io"
type outputMode int
// DiscardNonColorEscSeq supports the divided color escape sequence.
// But non-color escape sequence is not output.
// Please use the OutputNonColorEscSeq If you want to output a non-color
// escape sequences such as ncurses. However, it does not support the divided
// color escape sequence.
const (
_ outputMode = iota
DiscardNonColorEscSeq
OutputNonColorEscSeq
)
// NewColorWriter creates and initializes a new ansiColorWriter
// using io.Writer w as its initial contents.
// In the console of Windows, which change the foreground and background
// colors of the text by the escape sequence.
// In the console of other systems, which writes to w all text.
func NewColorWriter(w io.Writer) io.Writer {
return NewModeColorWriter(w, DiscardNonColorEscSeq)
}
// NewModeColorWriter create and initializes a new ansiColorWriter
// by specifying the outputMode.
func NewModeColorWriter(w io.Writer, mode outputMode) io.Writer {
if _, ok := w.(*colorWriter); !ok {
return &colorWriter{
w: w,
mode: mode,
}
}
return w
}