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encoding/protojson: simplify Duration formatting

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Simplify the implementation by reducing the number of branches.

Change-Id: I6e2ffee0fc2d77f7e2a70f76e03d081f4fc0e99d
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/247459
Reviewed-by: Herbie Ong <herbie@google.com>
This commit is contained in:
Joe Tsai 2020-08-07 13:26:37 -07:00
parent a709e31e5d
commit f2423bb714
1 changed files with 4 additions and 7 deletions
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11
encoding/protojson/well_known_types.go
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@ -605,14 +605,11 @@ func (e encoder) marshalDuration(m pref.Message) error {
}
// Generated output always contains 0, 3, 6, or 9 fractional digits,
// depending on required precision, followed by the suffix "s".
f := "%d.%09d"
if nanos < 0 {
nanos = -nanos
if secs == 0 {
f = "-%d.%09d"
}
var sign string
if secs < 0 || nanos < 0 {
sign, secs, nanos = "-", -1*secs, -1*nanos
}
x := fmt.Sprintf(f, secs, nanos)
x := fmt.Sprintf("%s%d.%09d", sign, secs, nanos)
x = strings.TrimSuffix(x, "000")
x = strings.TrimSuffix(x, "000")
x = strings.TrimSuffix(x, ".000")