package multierror
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import (
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"fmt"
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"strings"
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)
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// ErrorFormatFunc is a function callback that is called by Error to
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// turn the list of errors into a string.
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type ErrorFormatFunc func([]error) string
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// ListFormatFunc is a basic formatter that outputs the number of errors
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// that occurred along with a bullet point list of the errors.
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func ListFormatFunc(es []error) string {
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if len(es) == 1 {
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return fmt.Sprintf("1 error occurred:\n\t* %s\n\n", es[0])
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}
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points := make([]string, len(es))
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for i, err := range es {
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points[i] = fmt.Sprintf("* %s", err)
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}
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return fmt.Sprintf(
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"%d errors occurred:\n\t%s\n\n",
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len(es), strings.Join(points, "\n\t"))
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}
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