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package timefmt_test
import "strings"
type stringBuilder struct {
strings.Builder
}
func (sb *stringBuilder) writeDiff(s string) {
sb.WriteString("\x1b[1;4m")
sb.WriteString(s)
sb.WriteString("\x1b[0m")
}
func diff(expected, got string) string {
var sbx, sby stringBuilder
xs := strings.Split(expected, " ")
ys := strings.Split(got, " ")
for i, j := 0, 0; ; i, j = i+1, j+1 {
if i >= len(xs) {
if j >= len(ys) {
break
}
if j > 0 {
sby.writeDiff(" ")
}
sby.writeDiff(ys[j])
continue
} else if j >= len(ys) {
if i > 0 {
sbx.writeDiff(" ")
}
sbx.writeDiff(xs[i])
continue
}
if xs[i] == "" {
if ys[j] != "" {
sbx.writeDiff(" ")
j--
continue
}
} else if ys[j] == "" {
sby.writeDiff(" ")
i--
continue
}
if i > 0 {
sbx.WriteByte(' ')
}
if j > 0 {
sby.WriteByte(' ')
}
if xs[i] == ys[j] {
sbx.WriteString(xs[i])
sby.WriteString(ys[j])
} else {
sbx.writeDiff(xs[i])
sby.writeDiff(ys[j])
}
}
return "diff:\nexpected: " + sbx.String() + "\n got: " + sby.String()
}
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