/
err.go
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/
err.go
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// Copyright Project Contour 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 cli
import "fmt"
// ExitCode is a process exit code suitable for use with os.Exit.
type ExitCode int
const (
// EX_FAIL is an exit code indicating an unspecified error.
EX_FAIL ExitCode = 1 //nolint:golint
// EX_USAGE is an exit code indicating invalid invocation syntax.
EX_USAGE ExitCode = 65 //nolint:golint
// EX_NOINPUT is an exit code indicating missing input data.
EX_NOINPUT ExitCode = 66 //nolint:golint
// EX_DATAERR means the input data was incorrect in some
// way. This should only be used for user's data and not
// system files.
EX_DATAERR ExitCode = 65 //nolint:golint
// EX_CONFIG means that something was found in an unconfigured
// or misconfigured state.
EX_CONFIG ExitCode = 78 //nolint:golint
)
// ExitError captures an ExitCode and its associated error message.
type ExitError struct {
Code ExitCode
Err error
}
func (e ExitError) Error() string {
if e.Err != nil {
return e.Err.Error()
}
return ""
}
// ExitErrorf formats and error message along with the ExitCode.
func ExitErrorf(code ExitCode, format string, args ...interface{}) error {
return &ExitError{
Code: code,
Err: fmt.Errorf(format, args...),
}
}