mirror of
https://github.com/dutchcoders/transfer.sh.git
synced 2025-01-15 13:10:18 +01:00
71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
// Copyright 2015 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 martian
|
|
|
|
import (
|
|
"strings"
|
|
"sync"
|
|
)
|
|
|
|
// MultiError is a collection of errors that implements the error interface.
|
|
type MultiError struct {
|
|
mu sync.RWMutex
|
|
errs []error
|
|
}
|
|
|
|
// NewMultiError returns a new MultiError.
|
|
func NewMultiError() *MultiError {
|
|
return &MultiError{}
|
|
}
|
|
|
|
// Error returns the list of errors separated by newlines.
|
|
func (merr *MultiError) Error() string {
|
|
merr.mu.RLock()
|
|
defer merr.mu.RUnlock()
|
|
|
|
var errs []string
|
|
for _, err := range merr.errs {
|
|
errs = append(errs, err.Error())
|
|
}
|
|
|
|
return strings.Join(errs, "\n")
|
|
}
|
|
|
|
// Errors returns the error slice containing the error collection.
|
|
func (merr *MultiError) Errors() []error {
|
|
merr.mu.RLock()
|
|
defer merr.mu.RUnlock()
|
|
|
|
return merr.errs
|
|
}
|
|
|
|
// Add appends an error to the error collection.
|
|
func (merr *MultiError) Add(err error) {
|
|
merr.mu.Lock()
|
|
defer merr.mu.Unlock()
|
|
|
|
// Unwrap *MultiError to ensure that depth never exceeds 1.
|
|
if merr2, ok := err.(*MultiError); ok {
|
|
merr.errs = append(merr.errs, merr2.Errors()...)
|
|
return
|
|
}
|
|
|
|
merr.errs = append(merr.errs, err)
|
|
}
|
|
|
|
// Empty returns whether the *MultiError contains any errors.
|
|
func (merr *MultiError) Empty() bool {
|
|
return len(merr.errs) == 0
|
|
}
|