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44 lines
773 B
Go
44 lines
773 B
Go
package errorarray
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import (
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"fmt"
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"strings"
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)
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type Errors struct {
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Msg string
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Wrapped []error
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}
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var _ error = (*Errors)(nil)
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func Wrap(errs []error, msg string) Errors {
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if len(errs) == 0 {
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panic("passing empty errs argument")
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}
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return Errors{Msg: msg, Wrapped: errs}
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}
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func (e Errors) Unwrap() error {
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if len(e.Wrapped) == 1 {
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return e.Wrapped[0]
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}
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return nil // ... limitation of the Go 1.13 errors API
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}
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func (e Errors) Error() string {
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if len(e.Wrapped) == 1 {
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return fmt.Sprintf("%s: %s", e.Msg, e.Wrapped[0])
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}
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var buf strings.Builder
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fmt.Fprintf(&buf, "%s: multiple errors:\n", e.Msg)
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for i, err := range e.Wrapped {
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fmt.Fprintf(&buf, "%s", err)
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if i != len(e.Wrapped)-1 {
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fmt.Fprintf(&buf, "\n")
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}
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}
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return buf.String()
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}
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