1 files changed, 0 insertions, 247 deletions
diff --git a/vendor/github.com/dsoprea/go-exif/exif.go b/vendor/github.com/dsoprea/go-exif/exif.go
deleted file mode 100644
index 8d1b848f0..000000000
--- a/vendor/github.com/dsoprea/go-exif/exif.go
+++ /dev/null
@@ -1,247 +0,0 @@
-package exif
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"os"
-
-	"encoding/binary"
-	"io/ioutil"
-
-	"github.com/dsoprea/go-logging"
-)
-
-const (
-	// ExifAddressableAreaStart is the absolute offset in the file that all
-	// offsets are relative to.
-	ExifAddressableAreaStart = uint32(0x0)
-
-	// ExifDefaultFirstIfdOffset is essentially the number of bytes in addition
-	// to `ExifAddressableAreaStart` that you have to move in order to escape
-	// the rest of the header and get to the earliest point where we can put
-	// stuff (which has to be the first IFD). This is the size of the header
-	// sequence containing the two-character byte-order, two-character fixed-
-	// bytes, and the four bytes describing the first-IFD offset.
-	ExifDefaultFirstIfdOffset = uint32(2 + 2 + 4)
-)
-
-var (
-	exifLogger = log.NewLogger("exif.exif")
-
-	// EncodeDefaultByteOrder is the default byte-order for encoding operations.
-	EncodeDefaultByteOrder = binary.BigEndian
-
-	// Default byte order for tests.
-	TestDefaultByteOrder = binary.BigEndian
-
-	BigEndianBoBytes    = [2]byte{'M', 'M'}
-	LittleEndianBoBytes = [2]byte{'I', 'I'}
-
-	ByteOrderLookup = map[[2]byte]binary.ByteOrder{
-		BigEndianBoBytes:    binary.BigEndian,
-		LittleEndianBoBytes: binary.LittleEndian,
-	}
-
-	ByteOrderLookupR = map[binary.ByteOrder][2]byte{
-		binary.BigEndian:    BigEndianBoBytes,
-		binary.LittleEndian: LittleEndianBoBytes,
-	}
-
-	ExifFixedBytesLookup = map[binary.ByteOrder][2]byte{
-		binary.LittleEndian: {0x2a, 0x00},
-		binary.BigEndian:    {0x00, 0x2a},
-	}
-)
-
-var (
-	ErrNoExif          = errors.New("no exif data")
-	ErrExifHeaderError = errors.New("exif header error")
-)
-
-// SearchAndExtractExif returns a slice from the beginning of the EXIF data to
-// end of the file (it's not practical to try and calculate where the data
-// actually ends; it needs to be formally parsed).
-func SearchAndExtractExif(data []byte) (rawExif []byte, err error) {
-	defer func() {
-		if state := recover(); state != nil {
-			err := log.Wrap(state.(error))
-			log.Panic(err)
-		}
-	}()
-
-	// Search for the beginning of the EXIF information. The EXIF is near the
-	// beginning of our/most JPEGs, so this has a very low cost.
-
-	foundAt := -1
-	for i := 0; i < len(data); i++ {
-		if _, err := ParseExifHeader(data[i:]); err == nil {
-			foundAt = i
-			break
-		} else if log.Is(err, ErrNoExif) == false {
-			return nil, err
-		}
-	}
-
-	if foundAt == -1 {
-		return nil, ErrNoExif
-	}
-
-	return data[foundAt:], nil
-}
-
-// SearchFileAndExtractExif returns a slice from the beginning of the EXIF data
-// to the end of the file (it's not practical to try and calculate where the
-// data actually ends).
-func SearchFileAndExtractExif(filepath string) (rawExif []byte, err error) {
-	defer func() {
-		if state := recover(); state != nil {
-			err := log.Wrap(state.(error))
-			log.Panic(err)
-		}
-	}()
-
-	// Open the file.
-
-	f, err := os.Open(filepath)
-	log.PanicIf(err)
-
-	defer f.Close()
-
-	data, err := ioutil.ReadAll(f)
-	log.PanicIf(err)
-
-	rawExif, err = SearchAndExtractExif(data)
-	log.PanicIf(err)
-
-	return rawExif, nil
-}
-
-type ExifHeader struct {
-	ByteOrder      binary.ByteOrder
-	FirstIfdOffset uint32
-}
-
-func (eh ExifHeader) String() string {
-	return fmt.Sprintf("ExifHeader<BYTE-ORDER=[%v] FIRST-IFD-OFFSET=(0x%02x)>", eh.ByteOrder, eh.FirstIfdOffset)
-}
-
-// ParseExifHeader parses the bytes at the very top of the header.
-//
-// This will panic with ErrNoExif on any data errors so that we can double as
-// an EXIF-detection routine.
-func ParseExifHeader(data []byte) (eh ExifHeader, err error) {
-	defer func() {
-		if state := recover(); state != nil {
-			err = log.Wrap(state.(error))
-		}
-	}()
-
-	// Good reference:
-	//
-	//      CIPA DC-008-2016; JEITA CP-3451D
-	//      -> http://www.cipa.jp/std/documents/e/DC-008-Translation-2016-E.pdf
-
-	if len(data) < 2 {
-		exifLogger.Warningf(nil, "Not enough data for EXIF header (1): (%d)", len(data))
-		return eh, ErrNoExif
-	}
-
-	byteOrderBytes := [2]byte{data[0], data[1]}
-
-	byteOrder, found := ByteOrderLookup[byteOrderBytes]
-	if found == false {
-		// exifLogger.Warningf(nil, "EXIF byte-order not recognized: [%v]", byteOrderBytes)
-		return eh, ErrNoExif
-	}
-
-	if len(data) < 4 {
-		exifLogger.Warningf(nil, "Not enough data for EXIF header (2): (%d)", len(data))
-		return eh, ErrNoExif
-	}
-
-	fixedBytes := [2]byte{data[2], data[3]}
-	expectedFixedBytes := ExifFixedBytesLookup[byteOrder]
-	if fixedBytes != expectedFixedBytes {
-		// exifLogger.Warningf(nil, "EXIF header fixed-bytes should be [%v] but are: [%v]", expectedFixedBytes, fixedBytes)
-		return eh, ErrNoExif
-	}
-
-	if len(data) < 2 {
-		exifLogger.Warningf(nil, "Not enough data for EXIF header (3): (%d)", len(data))
-		return eh, ErrNoExif
-	}
-
-	firstIfdOffset := byteOrder.Uint32(data[4:8])
-
-	eh = ExifHeader{
-		ByteOrder:      byteOrder,
-		FirstIfdOffset: firstIfdOffset,
-	}
-
-	return eh, nil
-}
-
-// Visit recursively invokes a callback for every tag.
-func Visit(rootIfdName string, ifdMapping *IfdMapping, tagIndex *TagIndex, exifData []byte, visitor RawTagVisitor) (eh ExifHeader, err error) {
-	defer func() {
-		if state := recover(); state != nil {
-			err = log.Wrap(state.(error))
-		}
-	}()
-
-	eh, err = ParseExifHeader(exifData)
-	log.PanicIf(err)
-
-	ie := NewIfdEnumerate(ifdMapping, tagIndex, exifData, eh.ByteOrder)
-
-	err = ie.Scan(rootIfdName, eh.FirstIfdOffset, visitor, true)
-	log.PanicIf(err)
-
-	return eh, nil
-}
-
-// Collect recursively builds a static structure of all IFDs and tags.
-func Collect(ifdMapping *IfdMapping, tagIndex *TagIndex, exifData []byte) (eh ExifHeader, index IfdIndex, err error) {
-	defer func() {
-		if state := recover(); state != nil {
-			err = log.Wrap(state.(error))
-		}
-	}()
-
-	eh, err = ParseExifHeader(exifData)
-	log.PanicIf(err)
-
-	ie := NewIfdEnumerate(ifdMapping, tagIndex, exifData, eh.ByteOrder)
-
-	index, err = ie.Collect(eh.FirstIfdOffset, true)
-	log.PanicIf(err)
-
-	return eh, index, nil
-}
-
-// BuildExifHeader constructs the bytes that go in the very beginning.
-func BuildExifHeader(byteOrder binary.ByteOrder, firstIfdOffset uint32) (headerBytes []byte, err error) {
-	defer func() {
-		if state := recover(); state != nil {
-			err = log.Wrap(state.(error))
-		}
-	}()
-
-	b := new(bytes.Buffer)
-
-	// This is the point in the data that all offsets are relative to.
-	boBytes := ByteOrderLookupR[byteOrder]
-	_, err = b.WriteString(string(boBytes[:]))
-	log.PanicIf(err)
-
-	fixedBytes := ExifFixedBytesLookup[byteOrder]
-
-	_, err = b.Write(fixedBytes[:])
-	log.PanicIf(err)
-
-	err = binary.Write(b, byteOrder, firstIfdOffset)
-	log.PanicIf(err)
-
-	return b.Bytes(), nil
-}