/
errors.go
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/
errors.go
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// Copyright (c) 2019 Cisco and/or its affiliates.
//
// 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 commands
import (
"fmt"
"strings"
)
// Errors is a list of errors.
// Useful in a loop if you don't want to return the error right away and you want to display after the loop,
// all the errors that happened during the loop.
type Errors []error
func (errList Errors) Error() string {
if len(errList) < 1 {
return ""
}
out := make([]string, len(errList))
for i := range errList {
out[i] = errList[i].Error()
}
return strings.Join(out, ", ")
}
// StatusError reports an unsuccessful exit by a command.
type StatusError struct {
Status string
StatusCode int
}
func (e StatusError) String() string {
return fmt.Sprintf("Status: %s, Code: %d", e.Status, e.StatusCode)
}
func (e StatusError) Error() string {
return fmt.Sprintf("%s (%d)", e.Status, e.StatusCode)
}
// ExitCode returns proper exit code for err or 0 if err is nil.
func ExitCode(err error) int {
if err == nil {
return 0
}
if sterr, ok := err.(StatusError); ok {
// StatusError should only be used for errors, and all errors should
// have a non-zero exit status, so never exit with 0
if sterr.StatusCode != 0 {
return sterr.StatusCode
}
}
return 1
}