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