44 lines
997 B
Go
44 lines
997 B
Go
package merror
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import (
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"fmt"
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"strings"
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)
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// FormatterFunc is a function that converts a merror
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// to a string.
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type FormatterFunc func(merr *MError) string
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// GlobalFormatter is the global merror formatter.
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// Set this to a custom formatter if desired.
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var GlobalFormatter = defaultFormatter
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// defaultFormatter
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func defaultFormatter(merr *MError) string {
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count := 0
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overflow := 0
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var format func(sb *strings.Builder, merr *MError, indent string)
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format = func(sb *strings.Builder, merr *MError, indent string) {
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count += merr.Len()
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overflow += merr.Overflow()
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fmt.Fprintf(sb, "%sMError:\n", indent)
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for _, err := range merr.Errors() {
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if e, ok := err.(*MError); ok {
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format(sb, e, indent+" ")
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} else {
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fmt.Fprintf(sb, "%s%s\n", indent, err.Error())
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}
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}
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}
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sb := &strings.Builder{}
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format(sb, merr, "")
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fmt.Fprintf(sb, "%d errors total.\n", count)
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if merr.overflow > 0 {
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fmt.Fprintf(sb, "%d errors truncated.\n", overflow)
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}
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return sb.String()
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}
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