elliotchance/gedcom

package gedcom

import (
    "errors"
    "fmt"
    "strings"
)

type Errors []error

func NewErrors(errors ...error) (errs Errors) {
    for _, err := range errors {
        if err != nil {
            errs = append(errs, err)
        }
    }

    return
}

func (e Errors) Errors() (errors []string) {
    for _, err := range e {
        errors = append(errors, err.Error())
    }

    return
}

func (e Errors) Error() string {
    if len(e) == 1 {
        return e[0].Error()
    }

    errs := strings.Join(e.Errors(), "; ")

    return fmt.Sprintf("%d errors: %s", len(e), errs)
}

func (e Errors) Err() error {
    if len(e) == 0 {
        return nil
    }

    return errors.New(e.Error())
}