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93 lines
2.5 KiB
93 lines
2.5 KiB
package cbor |
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import ( |
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"time" |
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) |
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func appendIntegerTimestamp(dst []byte, t time.Time) []byte { |
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major := majorTypeTags |
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minor := additionalTypeTimestamp |
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dst = append(dst, byte(major|minor)) |
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secs := t.Unix() |
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var val uint64 |
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if secs < 0 { |
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major = majorTypeNegativeInt |
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val = uint64(-secs - 1) |
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} else { |
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major = majorTypeUnsignedInt |
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val = uint64(secs) |
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} |
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dst = appendCborTypePrefix(dst, major, uint64(val)) |
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return dst |
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} |
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func (e Encoder) appendFloatTimestamp(dst []byte, t time.Time) []byte { |
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major := majorTypeTags |
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minor := additionalTypeTimestamp |
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dst = append(dst, byte(major|minor)) |
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secs := t.Unix() |
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nanos := t.Nanosecond() |
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var val float64 |
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val = float64(secs)*1.0 + float64(nanos)*1E-9 |
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return e.AppendFloat64(dst, val) |
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} |
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// AppendTime encodes and adds a timestamp to the dst byte array. |
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func (e Encoder) AppendTime(dst []byte, t time.Time, unused string) []byte { |
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utc := t.UTC() |
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if utc.Nanosecond() == 0 { |
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return appendIntegerTimestamp(dst, utc) |
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} |
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return e.appendFloatTimestamp(dst, utc) |
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} |
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// AppendTimes encodes and adds an array of timestamps to the dst byte array. |
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func (e Encoder) AppendTimes(dst []byte, vals []time.Time, unused string) []byte { |
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major := majorTypeArray |
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l := len(vals) |
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if l == 0 { |
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return e.AppendArrayEnd(e.AppendArrayStart(dst)) |
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} |
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if l <= additionalMax { |
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lb := byte(l) |
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dst = append(dst, byte(major|lb)) |
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} else { |
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dst = appendCborTypePrefix(dst, major, uint64(l)) |
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} |
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for _, t := range vals { |
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dst = e.AppendTime(dst, t, unused) |
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} |
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return dst |
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} |
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// AppendDuration encodes and adds a duration to the dst byte array. |
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// useInt field indicates whether to store the duration as seconds (integer) or |
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// as seconds+nanoseconds (float). |
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func (e Encoder) AppendDuration(dst []byte, d time.Duration, unit time.Duration, useInt bool) []byte { |
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if useInt { |
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return e.AppendInt64(dst, int64(d/unit)) |
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} |
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return e.AppendFloat64(dst, float64(d)/float64(unit)) |
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} |
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// AppendDurations encodes and adds an array of durations to the dst byte array. |
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// useInt field indicates whether to store the duration as seconds (integer) or |
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// as seconds+nanoseconds (float). |
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func (e Encoder) AppendDurations(dst []byte, vals []time.Duration, unit time.Duration, useInt bool) []byte { |
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major := majorTypeArray |
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l := len(vals) |
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if l == 0 { |
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return e.AppendArrayEnd(e.AppendArrayStart(dst)) |
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} |
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if l <= additionalMax { |
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lb := byte(l) |
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dst = append(dst, byte(major|lb)) |
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} else { |
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dst = appendCborTypePrefix(dst, major, uint64(l)) |
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} |
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for _, d := range vals { |
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dst = e.AppendDuration(dst, d, unit, useInt) |
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} |
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return dst |
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}
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