111 lines
2.2 KiB
Go
111 lines
2.2 KiB
Go
package errors
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import (
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base "errors"
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"fmt"
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"github.com/go-errors/errors"
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)
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// interop with pkg/errors
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type causer interface {
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Cause() error
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}
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// Err intelligently creates/handles errors, while preserving the stack trace.
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// It works with errors from github.com/pkg/errors too.
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func Err(err interface{}, fmtParams ...interface{}) error {
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if err == nil {
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return nil
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}
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if _, ok := err.(causer); ok {
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err = fmt.Errorf("%+v", err)
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} else if errString, ok := err.(string); ok && len(fmtParams) > 0 {
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err = fmt.Errorf(errString, fmtParams...)
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}
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return errors.Wrap(err, 1)
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}
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// Wrap calls errors.Wrap, in case you want to skip a different amount
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func Wrap(err interface{}, skip int) *errors.Error {
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if err == nil {
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return nil
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}
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if _, ok := err.(causer); ok {
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err = fmt.Errorf("%+v", err)
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}
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return errors.Wrap(err, skip+1)
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}
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// Unwrap returns the original error that was wrapped
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func Unwrap(err error) error {
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if err == nil {
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return nil
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}
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deeper := true
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for deeper {
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deeper = false
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if e, ok := err.(*errors.Error); ok {
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err = e.Err
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deeper = true
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}
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if c, ok := err.(causer); ok {
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err = c.Cause()
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deeper = true
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}
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}
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return err
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}
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// Is compares two wrapped errors to determine if the underlying errors are the same
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// It also interops with errors from pkg/errors
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func Is(e error, original error) bool {
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if c, ok := e.(causer); ok {
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e = c.Cause()
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}
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if c, ok := original.(causer); ok {
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original = c.Cause()
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}
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return errors.Is(e, original)
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}
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// Prefix prefixes the message of the error with the given string
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func Prefix(prefix string, err interface{}) error {
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if err == nil {
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return nil
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}
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return errors.WrapPrefix(Err(err), prefix, 0)
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}
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// Trace returns the stack trace
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func Trace(err error) string {
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if err == nil {
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return ""
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}
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return string(Err(err).(*errors.Error).Stack())
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}
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// FullTrace returns the error type, message, and stack trace
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func FullTrace(err error) string {
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if err == nil {
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return ""
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}
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return Err(err).(*errors.Error).ErrorStack()
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}
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// Base returns a simple error with no stack trace attached
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func Base(text string) error {
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return base.New(text)
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}
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// HasTrace checks if error has a trace attached
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func HasTrace(err error) bool {
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_, ok := err.(*errors.Error)
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return ok
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}
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