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utils.go
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utils.go
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// Copyright 2017 Google Inc. All rights reserved.
// 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 utils
import (
"fmt"
"os"
"regexp"
"github.com/sirupsen/logrus"
)
var yesResponses = []string{"y", "Y", "yes", "Yes", "YES"}
var noResponses = []string{"n", "N", "no", "No", "NO"}
const (
NoopCommand string = "NOOP_COMMAND_DO_NOT_RUN"
DebianRoot string = "/usr/share/doc"
LicenseFile string = "copyright"
)
func CompileAndRunRegex(regex string, base string, shouldMatch bool) bool {
r, rErr := regexp.Compile(regex)
if rErr != nil {
logrus.Errorf("Error compiling regex %s : %s", regex, rErr.Error())
return false
}
return shouldMatch == r.MatchString(base)
}
// adapted from https://gist.github.com/albrow/5882501
func UserConfirmation(message string, force bool) bool {
fmt.Println(message)
if force {
fmt.Println("Forcing test run!")
return true
}
var input string
_, err := fmt.Scanln(&input)
if err != nil {
logrus.Errorf("error reading input from stdin: %s", err.Error())
return false
}
for _, response := range yesResponses {
if input == response {
return true
}
}
for _, response := range noResponses {
if input == response {
return false
}
}
fmt.Println("Please type yes or no to continue or exit")
return UserConfirmation(message, force)
}
func ValueInList(target string, list []string) bool {
for _, value := range list {
if target == value {
return true
}
}
return false
}
func SubstituteEnvVar(arg string, env map[string]string) string {
f := func(key string) string {
return env[key]
}
subbed := os.Expand(arg, f)
return subbed
}
func SubstituteEnvVars(args []string, env map[string]string) []string {
finalArgs := []string{}
for _, arg := range args {
finalArgs = append(finalArgs, SubstituteEnvVar(arg, env))
}
return finalArgs
}