forked from jshiffer/matterbridge
57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
|
|
// See License.txt for license information.
|
|
|
|
package jsonutils
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
type HumanizedJsonError struct {
|
|
Err error
|
|
Line int
|
|
Character int
|
|
}
|
|
|
|
func (e *HumanizedJsonError) Error() string {
|
|
return e.Err.Error()
|
|
}
|
|
|
|
// HumanizeJsonError extracts error offsets and annotates the error with useful context
|
|
func HumanizeJsonError(err error, data []byte) error {
|
|
if syntaxError, ok := err.(*json.SyntaxError); ok {
|
|
return NewHumanizedJsonError(syntaxError, data, syntaxError.Offset)
|
|
} else if unmarshalError, ok := err.(*json.UnmarshalTypeError); ok {
|
|
return NewHumanizedJsonError(unmarshalError, data, unmarshalError.Offset)
|
|
} else {
|
|
return err
|
|
}
|
|
}
|
|
|
|
func NewHumanizedJsonError(err error, data []byte, offset int64) *HumanizedJsonError {
|
|
if err == nil {
|
|
return nil
|
|
}
|
|
|
|
if offset < 0 || offset > int64(len(data)) {
|
|
return &HumanizedJsonError{
|
|
Err: errors.Wrapf(err, "invalid offset %d", offset),
|
|
}
|
|
}
|
|
|
|
lineSep := []byte{'\n'}
|
|
|
|
line := bytes.Count(data[:offset], lineSep) + 1
|
|
lastLineOffset := bytes.LastIndex(data[:offset], lineSep)
|
|
character := int(offset) - (lastLineOffset + 1) + 1
|
|
|
|
return &HumanizedJsonError{
|
|
Line: line,
|
|
Character: character,
|
|
Err: errors.Wrapf(err, "parsing error at line %d, character %d", line, character),
|
|
}
|
|
}
|