mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-05-20 17:28:40 +00:00
149 lines
3.2 KiB
Go
149 lines
3.2 KiB
Go
package exifcommon
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import (
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"bytes"
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"fmt"
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"reflect"
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"strconv"
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"strings"
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"time"
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"github.com/dsoprea/go-logging"
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)
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var (
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timeType = reflect.TypeOf(time.Time{})
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)
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// DumpBytes prints a list of hex-encoded bytes.
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func DumpBytes(data []byte) {
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fmt.Printf("DUMP: ")
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for _, x := range data {
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fmt.Printf("%02x ", x)
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}
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fmt.Printf("\n")
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}
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// DumpBytesClause prints a list like DumpBytes(), but encapsulated in
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// "[]byte { ... }".
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func DumpBytesClause(data []byte) {
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fmt.Printf("DUMP: ")
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fmt.Printf("[]byte { ")
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for i, x := range data {
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fmt.Printf("0x%02x", x)
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if i < len(data)-1 {
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fmt.Printf(", ")
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}
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}
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fmt.Printf(" }\n")
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}
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// DumpBytesToString returns a stringified list of hex-encoded bytes.
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func DumpBytesToString(data []byte) string {
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b := new(bytes.Buffer)
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for i, x := range data {
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_, err := b.WriteString(fmt.Sprintf("%02x", x))
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log.PanicIf(err)
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if i < len(data)-1 {
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_, err := b.WriteRune(' ')
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log.PanicIf(err)
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}
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}
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return b.String()
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}
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// DumpBytesClauseToString returns a comma-separated list of hex-encoded bytes.
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func DumpBytesClauseToString(data []byte) string {
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b := new(bytes.Buffer)
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for i, x := range data {
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_, err := b.WriteString(fmt.Sprintf("0x%02x", x))
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log.PanicIf(err)
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if i < len(data)-1 {
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_, err := b.WriteString(", ")
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log.PanicIf(err)
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}
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}
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return b.String()
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}
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// ExifFullTimestampString produces a string like "2018:11:30 13:01:49" from a
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// `time.Time` struct. It will attempt to convert to UTC first.
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func ExifFullTimestampString(t time.Time) (fullTimestampPhrase string) {
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t = t.UTC()
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return fmt.Sprintf("%04d:%02d:%02d %02d:%02d:%02d", t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), t.Second())
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}
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// ParseExifFullTimestamp parses dates like "2018:11:30 13:01:49" into a UTC
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// `time.Time` struct.
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func ParseExifFullTimestamp(fullTimestampPhrase string) (timestamp time.Time, err error) {
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defer func() {
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if state := recover(); state != nil {
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err = log.Wrap(state.(error))
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}
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}()
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parts := strings.Split(fullTimestampPhrase, " ")
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datestampValue, timestampValue := parts[0], parts[1]
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// Normalize the separators.
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datestampValue = strings.ReplaceAll(datestampValue, "-", ":")
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timestampValue = strings.ReplaceAll(timestampValue, "-", ":")
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dateParts := strings.Split(datestampValue, ":")
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year, err := strconv.ParseUint(dateParts[0], 10, 16)
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if err != nil {
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log.Panicf("could not parse year")
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}
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month, err := strconv.ParseUint(dateParts[1], 10, 8)
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if err != nil {
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log.Panicf("could not parse month")
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}
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day, err := strconv.ParseUint(dateParts[2], 10, 8)
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if err != nil {
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log.Panicf("could not parse day")
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}
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timeParts := strings.Split(timestampValue, ":")
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hour, err := strconv.ParseUint(timeParts[0], 10, 8)
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if err != nil {
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log.Panicf("could not parse hour")
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}
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minute, err := strconv.ParseUint(timeParts[1], 10, 8)
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if err != nil {
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log.Panicf("could not parse minute")
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}
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second, err := strconv.ParseUint(timeParts[2], 10, 8)
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if err != nil {
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log.Panicf("could not parse second")
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}
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timestamp = time.Date(int(year), time.Month(month), int(day), int(hour), int(minute), int(second), 0, time.UTC)
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return timestamp, nil
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}
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// IsTime returns true if the value is a `time.Time`.
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func IsTime(v interface{}) bool {
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// TODO(dustin): Add test
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return reflect.TypeOf(v) == timeType
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}
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