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Merged
patrickdevivo merged 1 commit into from
Sep 30, 2025
Merged

feat: Add ja-JP (Japanese) locale with tests #27

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38 changes: 38 additions & 0 deletions locale/ja-JP.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,38 @@
package locale

import (
"fmt"
"math"
"time"
)

var japaneseJapan = Formatters{
-1 << 63: func(d time.Duration) string { return fmt.Sprintf("%.0f年後", math.Ceil(-d.Hours()/(24.0*30*12))) },
-17 * (24 * time.Hour) * 30: func(_ time.Duration) string { return "1年後" },
-10 * (24 * time.Hour) * 30: func(d time.Duration) string { return fmt.Sprintf("%.0fヶ月後", math.Ceil(-d.Hours()/(24.0*30))) },
-45 * (24 * time.Hour): func(d time.Duration) string { return "1ヶ月後" },
-25 * (24 * time.Hour): func(d time.Duration) string { return fmt.Sprintf("%.0f日後", math.Ceil(-d.Hours()/24.0)) },
-35 * time.Hour: func(_ time.Duration) string { return "1日後" },
-21 * time.Hour: func(d time.Duration) string { return fmt.Sprintf("%.0f時間後", math.Ceil(-d.Hours())) },
-89 * time.Minute: func(_ time.Duration) string { return "1時間後" },
-44 * time.Minute: func(d time.Duration) string { return fmt.Sprintf("%.0f分後", math.Ceil(-d.Minutes())) },
-89 * time.Second: func(_ time.Duration) string { return "1分後" },
-44 * time.Second: func(_ time.Duration) string { return "数秒後" },

44 * time.Second: func(_ time.Duration) string { return "数秒前" },
89 * time.Second: func(_ time.Duration) string { return "1分前" },
44 * time.Minute: func(d time.Duration) string { return fmt.Sprintf("%.0f分前", math.Ceil(d.Minutes())) },
89 * time.Minute: func(_ time.Duration) string { return "1時間前" },
21 * time.Hour: func(d time.Duration) string { return fmt.Sprintf("%.0f時間前", math.Ceil(d.Hours())) },
35 * time.Hour: func(_ time.Duration) string { return "1日前" },
25 * (24 * time.Hour): func(d time.Duration) string { return fmt.Sprintf("%.0f日前", math.Ceil(d.Hours()/24.0)) },
45 * (24 * time.Hour): func(d time.Duration) string { return "1ヶ月前" },
10 * (24 * time.Hour) * 30: func(d time.Duration) string { return fmt.Sprintf("%.0fヶ月前", math.Ceil(d.Hours()/(24.0*30))) },
17 * (24 * time.Hour) * 30: func(_ time.Duration) string { return "1年前" },
1<<63 - 1: func(d time.Duration) string { return fmt.Sprintf("%.0f年前", math.Ceil(d.Hours()/(24.0*30*12))) },
}

func init() {
Register("ja", japaneseJapan)
Register("ja-JP", japaneseJapan)
}
92 changes: 92 additions & 0 deletions timediff_ja_JP_test.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,92 @@
package timediff_test

import (
"fmt"
"testing"

"github.com/mergestat/timediff"
)

var fixtures_ja_JP = map[string]string{
"-10s": "数秒前",
"-44s": "数秒前",
"-45s": "1分前",
"-89s": "1分前",
"-90s": "2分前",
"-91s": "2分前",
"-2m": "2分前",
"-10m": "10分前",
"-44m": "44分前",
"-45m": "1時間前",
"-60m": "1時間前",
"-1h": "1時間前",
"-80m": "1時間前",
"-89m": "1時間前",
"-90m": "2時間前",
"-2h": "2時間前",
"-20h": "20時間前",
"-21h": "21時間前",
"-21h30m": "1日前",
"-22h": "1日前",
"-24h": "1日前",
"-24h30m": "1日前",
"-34h59m": "1日前",
"-36h": "2日前",
fmt.Sprintf("-%dh", 10*24): "10日前",
fmt.Sprintf("-%dh", 25*24): "25日前",
fmt.Sprintf("-%dh", 26*24): "1ヶ月前",
fmt.Sprintf("-%dh", 45*24): "1ヶ月前",
fmt.Sprintf("-%dh2m", 45*24): "2ヶ月前",
fmt.Sprintf("-%dh", 46*24+1): "2ヶ月前",
fmt.Sprintf("-%dh", 80*24): "3ヶ月前",
fmt.Sprintf("-%dh", 9*24*30): "9ヶ月前",
fmt.Sprintf("-%dh", 10*24*30): "10ヶ月前",
fmt.Sprintf("-%dh1m", 10*24*30): "1年前",
fmt.Sprintf("-%dh", 12*24*30): "1年前",
fmt.Sprintf("-%dh", 17*24*30+1): "2年前",
fmt.Sprintf("-%dh", 24*24*30): "2年前",
fmt.Sprintf("-%dh", 20*24*30*12): "20年前",
fmt.Sprintf("-%dh", 100*24*30*12): "100年前",

"10s": "数秒後",
"44s": "数秒後",
"45s": "1分後",
"89s": "1分後",
"90s": "2分後",
"2m": "2分後",
"10m": "10分後",
"44m": "44分後",
"45m": "1時間後",
"60m": "1時間後",
"1h": "1時間後",
"80m": "1時間後",
"89m": "1時間後",
"89m10s": "2時間後",
"90m": "2時間後",
"2h": "2時間後",
"20h": "20時間後",
"21h": "21時間後",
"21h30m": "1日後",
"22h": "1日後",
"24h": "1日後",
"35h10m": "2日後",
"36h": "2日後",
fmt.Sprintf("%dh", 10*24): "10日後",
fmt.Sprintf("%dh", 25*24): "25日後",
fmt.Sprintf("%dh", 26*24): "1ヶ月後",
fmt.Sprintf("%dh", 45*24): "1ヶ月後",
fmt.Sprintf("%dh1m", 45*24): "2ヶ月後",
fmt.Sprintf("%dh", 46*24): "2ヶ月後",
fmt.Sprintf("%dh", 80*24): "3ヶ月後",
fmt.Sprintf("%dh", 9*24*30): "9ヶ月後",
fmt.Sprintf("%dh", 10*24*30): "10ヶ月後",
fmt.Sprintf("%dh1m", 10*24*30): "1年後",
fmt.Sprintf("%dh", 12*24*30): "1年後",
fmt.Sprintf("%dh", 24*24*30): "2年後",
fmt.Sprintf("%dh", 20*24*30*12): "20年後",
fmt.Sprintf("%dh", 100*24*30*12): "100年後",
}

func TestTimeDiffJaJP(t *testing.T) {
execFixtures(t, fixtures_ja_JP, timediff.WithLocale("ja-JP"))
}
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