diff options
Diffstat (limited to 'vendor/github.com/dsoprea/go-exif/utility.go')
| -rw-r--r-- | vendor/github.com/dsoprea/go-exif/utility.go | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/vendor/github.com/dsoprea/go-exif/utility.go b/vendor/github.com/dsoprea/go-exif/utility.go deleted file mode 100644 index 3d1ea2489..000000000 --- a/vendor/github.com/dsoprea/go-exif/utility.go +++ /dev/null @@ -1,222 +0,0 @@ -package exif - -import ( - "bytes" - "fmt" - "strconv" - "strings" - "time" - - "github.com/dsoprea/go-logging" -) - -func DumpBytes(data []byte) { - fmt.Printf("DUMP: ") - for _, x := range data { - fmt.Printf("%02x ", x) - } - - fmt.Printf("\n") -} - -func DumpBytesClause(data []byte) { - fmt.Printf("DUMP: ") - - fmt.Printf("[]byte { ") - - for i, x := range data { - fmt.Printf("0x%02x", x) - - if i < len(data)-1 { - fmt.Printf(", ") - } - } - - fmt.Printf(" }\n") -} - -func DumpBytesToString(data []byte) string { - b := new(bytes.Buffer) - - for i, x := range data { - _, err := b.WriteString(fmt.Sprintf("%02x", x)) - log.PanicIf(err) - - if i < len(data)-1 { - _, err := b.WriteRune(' ') - log.PanicIf(err) - } - } - - return b.String() -} - -func DumpBytesClauseToString(data []byte) string { - b := new(bytes.Buffer) - - for i, x := range data { - _, err := b.WriteString(fmt.Sprintf("0x%02x", x)) - log.PanicIf(err) - - if i < len(data)-1 { - _, err := b.WriteString(", ") - log.PanicIf(err) - } - } - - return b.String() -} - -// ParseExifFullTimestamp parses dates like "2018:11:30 13:01:49" into a UTC -// `time.Time` struct. -func ParseExifFullTimestamp(fullTimestampPhrase string) (timestamp time.Time, err error) { - defer func() { - if state := recover(); state != nil { - err = log.Wrap(state.(error)) - } - }() - - parts := strings.Split(fullTimestampPhrase, " ") - datestampValue, timestampValue := parts[0], parts[1] - - dateParts := strings.Split(datestampValue, ":") - - year, err := strconv.ParseUint(dateParts[0], 10, 16) - if err != nil { - log.Panicf("could not parse year") - } - - month, err := strconv.ParseUint(dateParts[1], 10, 8) - if err != nil { - log.Panicf("could not parse month") - } - - day, err := strconv.ParseUint(dateParts[2], 10, 8) - if err != nil { - log.Panicf("could not parse day") - } - - timeParts := strings.Split(timestampValue, ":") - - hour, err := strconv.ParseUint(timeParts[0], 10, 8) - if err != nil { - log.Panicf("could not parse hour") - } - - minute, err := strconv.ParseUint(timeParts[1], 10, 8) - if err != nil { - log.Panicf("could not parse minute") - } - - second, err := strconv.ParseUint(timeParts[2], 10, 8) - if err != nil { - log.Panicf("could not parse second") - } - - timestamp = time.Date(int(year), time.Month(month), int(day), int(hour), int(minute), int(second), 0, time.UTC) - return timestamp, nil -} - -// ExifFullTimestampString produces a string like "2018:11:30 13:01:49" from a -// `time.Time` struct. It will attempt to convert to UTC first. -func ExifFullTimestampString(t time.Time) (fullTimestampPhrase string) { - t = t.UTC() - - return fmt.Sprintf("%04d:%02d:%02d %02d:%02d:%02d", t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), t.Second()) -} - -// ExifTag is one simple representation of a tag in a flat list of all of them. -type ExifTag struct { - IfdPath string `json:"ifd_path"` - - TagId uint16 `json:"id"` - TagName string `json:"name"` - - TagTypeId TagTypePrimitive `json:"type_id"` - TagTypeName string `json:"type_name"` - Value interface{} `json:"value"` - ValueBytes []byte `json:"value_bytes"` - - ChildIfdPath string `json:"child_ifd_path"` -} - -// String returns a string representation. -func (et ExifTag) String() string { - return fmt.Sprintf("ExifTag<IFD-PATH=[%s] TAG-ID=(0x%02x) TAG-NAME=[%s] TAG-TYPE=[%s] VALUE=[%v] VALUE-BYTES=(%d) CHILD-IFD-PATH=[%s]", et.IfdPath, et.TagId, et.TagName, et.TagTypeName, et.Value, len(et.ValueBytes), et.ChildIfdPath) -} - -// GetFlatExifData returns a simple, flat representation of all tags. -func GetFlatExifData(exifData []byte) (exifTags []ExifTag, err error) { - defer func() { - if state := recover(); state != nil { - err = log.Wrap(state.(error)) - } - }() - - im := NewIfdMappingWithStandard() - ti := NewTagIndex() - - _, index, err := Collect(im, ti, exifData) - log.PanicIf(err) - - q := []*Ifd{index.RootIfd} - - exifTags = make([]ExifTag, 0) - - for len(q) > 0 { - var ifd *Ifd - ifd, q = q[0], q[1:] - - ti := NewTagIndex() - for _, ite := range ifd.Entries { - tagName := "" - - it, err := ti.Get(ifd.IfdPath, ite.TagId) - if err != nil { - // If it's a non-standard tag, just leave the name blank. - if log.Is(err, ErrTagNotFound) != true { - log.PanicIf(err) - } - } else { - tagName = it.Name - } - - value, err := ifd.TagValue(ite) - if err != nil { - if err == ErrUnhandledUnknownTypedTag { - value = UnparseableUnknownTagValuePlaceholder - } else { - log.Panic(err) - } - } - - valueBytes, err := ifd.TagValueBytes(ite) - if err != nil && err != ErrUnhandledUnknownTypedTag { - log.Panic(err) - } - - et := ExifTag{ - IfdPath: ifd.IfdPath, - TagId: ite.TagId, - TagName: tagName, - TagTypeId: ite.TagType, - TagTypeName: TypeNames[ite.TagType], - Value: value, - ValueBytes: valueBytes, - ChildIfdPath: ite.ChildIfdPath, - } - - exifTags = append(exifTags, et) - } - - for _, childIfd := range ifd.Children { - q = append(q, childIfd) - } - - if ifd.NextIfd != nil { - q = append(q, ifd.NextIfd) - } - } - - return exifTags, nil -} |