go/sqlite3
1
0
Fork 0
mirror of https://github.com/ncruces/go-sqlite3.git synced 2026-01-12 05:59:14 +00:00
Code Issues Packages Projects Releases Wiki Activity

Zero blobs, tests, documentation

Browse Source
This commit is contained in:
Nuno Cruces
2023-02-22 14:19:56 +00:00
parent b749b32a62
commit e91758c6a4
22 changed files with 487 additions and 395 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
time.go
View File

@@ -14,6 +14,9 @@ import (
// https://www.sqlite.org/lang_datefunc.html
type TimeFormat string
// TimeFormats recognized by SQLite to encode/decode time values.
//
// https://www.sqlite.org/lang_datefunc.html
const (
TimeFormatDefault TimeFormat = "" // time.RFC3339Nano
@@ -43,9 +46,9 @@ const (
TimeFormatJulianDay TimeFormat = "julianday"
TimeFormatUnix TimeFormat = "unixepoch"
TimeFormatUnixFrac TimeFormat = "unixepoch_frac"
TimeFormatUnixMilli TimeFormat = "unixepoch_milli"
TimeFormatUnixMicro TimeFormat = "unixepoch_micro"
TimeFormatUnixNano TimeFormat = "unixepoch_nano"
TimeFormatUnixMilli TimeFormat = "unixepoch_milli" // not an SQLite format
TimeFormatUnixMicro TimeFormat = "unixepoch_micro" // not an SQLite format
TimeFormatUnixNano TimeFormat = "unixepoch_nano" // not an SQLite format
// Auto
TimeFormatAuto TimeFormat = "auto"
@@ -54,7 +57,10 @@ const (
// Encode encodes a time value using this format.
//
// [TimeFormatDefault] and [TimeFormatAuto] encode using [time.RFC3339Nano],
// preserving timezone, with nanosecond accuracy.
// with nanosecond accuracy, and preserving timezone.
//
// Formats that don't record the timezone
// convert time values to UTC before encoding.
//
// https://www.sqlite.org/lang_datefunc.html
func (f TimeFormat) Encode(t time.Time) any {
@@ -65,7 +71,7 @@ func (f TimeFormat) Encode(t time.Time) any {
case TimeFormatUnix:
return t.Unix()
case TimeFormatUnixFrac:
return float64(t.Unix()) + float64(t.Nanosecond())/1_000_000_000
return float64(t.Unix()) + float64(t.Nanosecond())*1e-9
case TimeFormatUnixMilli:
return t.UnixMilli()
case TimeFormatUnixMicro:
@@ -77,7 +83,9 @@ func (f TimeFormat) Encode(t time.Time) any {
f = time.RFC3339Nano
}
// SQLite assumes UTC if unspecified.
if !strings.Contains(string(f), "Z07") && !strings.Contains(string(f), "-07") {
if !strings.Contains(string(f), "MST") &&
!strings.Contains(string(f), "Z07") &&
!strings.Contains(string(f), "-07") {
t = t.UTC()
}
return t.Format(string(f))
@@ -85,6 +93,9 @@ func (f TimeFormat) Encode(t time.Time) any {
// Decode decodes a time value using this format.
//
// Decoding of SQLite recognized formats is lenient:
// timezones and fractional seconds are always optional.
//
// https://www.sqlite.org/lang_datefunc.html
func (f TimeFormat) Decode(v any) (time.Time, error) {
switch f {
@@ -112,7 +123,7 @@ func (f TimeFormat) Decode(v any) (time.Time, error) {
switch v := v.(type) {
case float64:
sec, frac := math.Modf(v)
nsec := math.Floor(frac * 1_000_000_000)
nsec := math.Floor(frac * 1e9)
return time.Unix(int64(sec), int64(nsec)), nil
case int64:
return time.Unix(v, 0), nil
@@ -130,7 +141,7 @@ func (f TimeFormat) Decode(v any) (time.Time, error) {
}
switch v := v.(type) {
case float64:
return time.UnixMilli(int64(v)), nil
return time.UnixMilli(int64(math.Floor(v))), nil
case int64:
return time.UnixMilli(int64(v)), nil
default:
@@ -147,7 +158,7 @@ func (f TimeFormat) Decode(v any) (time.Time, error) {
}
switch v := v.(type) {
case float64:
return time.UnixMicro(int64(v)), nil
return time.UnixMicro(int64(math.Floor(v))), nil
case int64:
return time.UnixMicro(int64(v)), nil
default:
@@ -164,7 +175,7 @@ func (f TimeFormat) Decode(v any) (time.Time, error) {
}
switch v := v.(type) {
case float64:
return time.Unix(0, int64(v)), nil
return time.Unix(0, int64(math.Floor(v))), nil
case int64:
return time.Unix(0, int64(v)), nil
default: