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log.go
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log.go
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/*
Copyright 2016 The Fission 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 console
import (
"fmt"
"os"
"strings"
"github.com/fatih/color"
)
var (
// global Verbosity of our CLI
Verbosity int
)
func Error(msg interface{}) {
os.Stderr.WriteString(fmt.Sprintf("%v: %v\n", color.RedString("Error"), trimNewline(msg)))
}
func Errorf(format string, args ...interface{}) {
msg := fmt.Sprintf(format, args...)
os.Stderr.WriteString(fmt.Sprintf("%v: %v\n", color.RedString("Error"), trimNewline(msg)))
}
func Warn(msg interface{}) {
os.Stdout.WriteString(fmt.Sprintf("%v: %v\n", color.YellowString("Warning"), trimNewline(msg)))
}
func Info(msg interface{}) {
os.Stdout.WriteString(fmt.Sprintf("%v\n", trimNewline(msg)))
}
func Infof(format string, args ...interface{}) {
os.Stdout.WriteString(fmt.Sprintf("%v\n", trimNewline(fmt.Sprintf(format, args...))))
}
func Verbose(verbosityLevel int, format string, args ...interface{}) {
if Verbosity >= verbosityLevel {
fmt.Printf(format+"\n", args...)
}
}
func trimNewline(m interface{}) string {
return strings.TrimSuffix(fmt.Sprintf("%v", m), "\n")
}