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[chore] add back exif-terminator and use only for jpeg,png,webp (#3161)
* add back exif-terminator and use only for jpeg,png,webp * fix arguments passed to terminateExif() * pull in latest exif-terminator * fix test * update processed img --------- Co-authored-by: tobi <tobi.smethurst@protonmail.com>
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191 changed files with 38772 additions and 58 deletions
280
vendor/github.com/dsoprea/go-exif/v3/common/parser.go
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280
vendor/github.com/dsoprea/go-exif/v3/common/parser.go
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package exifcommon
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import (
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"bytes"
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"errors"
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"math"
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"encoding/binary"
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"github.com/dsoprea/go-logging"
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)
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var (
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parserLogger = log.NewLogger("exifcommon.parser")
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)
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var (
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ErrParseFail = errors.New("parse failure")
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)
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// Parser knows how to parse all well-defined, encoded EXIF types.
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type Parser struct {
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}
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// ParseBytesknows how to parse a byte-type value.
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func (p *Parser) ParseBytes(data []byte, unitCount uint32) (value []uint8, 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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// TODO(dustin): Add test
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count := int(unitCount)
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if len(data) < (TypeByte.Size() * count) {
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log.Panic(ErrNotEnoughData)
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}
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value = []uint8(data[:count])
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return value, nil
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}
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// ParseAscii returns a string and auto-strips the trailing NUL character that
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// should be at the end of the encoding.
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func (p *Parser) ParseAscii(data []byte, unitCount uint32) (value string, 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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// TODO(dustin): Add test
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count := int(unitCount)
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if len(data) < (TypeAscii.Size() * count) {
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log.Panic(ErrNotEnoughData)
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}
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if len(data) == 0 || data[count-1] != 0 {
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s := string(data[:count])
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parserLogger.Warningf(nil, "ASCII not terminated with NUL as expected: [%v]", s)
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for i, c := range s {
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if c > 127 {
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// Binary
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t := s[:i]
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parserLogger.Warningf(nil, "ASCII also had binary characters. Truncating: [%v]->[%s]", s, t)
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return t, nil
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}
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}
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return s, nil
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}
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// Auto-strip the NUL from the end. It serves no purpose outside of
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// encoding semantics.
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return string(data[:count-1]), nil
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}
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// ParseAsciiNoNul returns a string without any consideration for a trailing NUL
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// character.
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func (p *Parser) ParseAsciiNoNul(data []byte, unitCount uint32) (value string, 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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// TODO(dustin): Add test
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count := int(unitCount)
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if len(data) < (TypeAscii.Size() * count) {
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log.Panic(ErrNotEnoughData)
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}
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return string(data[:count]), nil
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}
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// ParseShorts knows how to parse an encoded list of shorts.
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func (p *Parser) ParseShorts(data []byte, unitCount uint32, byteOrder binary.ByteOrder) (value []uint16, 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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// TODO(dustin): Add test
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count := int(unitCount)
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if len(data) < (TypeShort.Size() * count) {
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log.Panic(ErrNotEnoughData)
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}
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value = make([]uint16, count)
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for i := 0; i < count; i++ {
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value[i] = byteOrder.Uint16(data[i*2:])
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}
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return value, nil
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}
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// ParseLongs knows how to encode an encoded list of unsigned longs.
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func (p *Parser) ParseLongs(data []byte, unitCount uint32, byteOrder binary.ByteOrder) (value []uint32, 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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// TODO(dustin): Add test
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count := int(unitCount)
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if len(data) < (TypeLong.Size() * count) {
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log.Panic(ErrNotEnoughData)
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}
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value = make([]uint32, count)
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for i := 0; i < count; i++ {
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value[i] = byteOrder.Uint32(data[i*4:])
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}
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return value, nil
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}
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// ParseFloats knows how to encode an encoded list of floats.
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func (p *Parser) ParseFloats(data []byte, unitCount uint32, byteOrder binary.ByteOrder) (value []float32, 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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count := int(unitCount)
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if len(data) != (TypeFloat.Size() * count) {
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log.Panic(ErrNotEnoughData)
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}
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value = make([]float32, count)
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for i := 0; i < count; i++ {
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value[i] = math.Float32frombits(byteOrder.Uint32(data[i*4 : (i+1)*4]))
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}
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return value, nil
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}
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// ParseDoubles knows how to encode an encoded list of doubles.
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func (p *Parser) ParseDoubles(data []byte, unitCount uint32, byteOrder binary.ByteOrder) (value []float64, 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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count := int(unitCount)
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if len(data) != (TypeDouble.Size() * count) {
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log.Panic(ErrNotEnoughData)
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}
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value = make([]float64, count)
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for i := 0; i < count; i++ {
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value[i] = math.Float64frombits(byteOrder.Uint64(data[i*8 : (i+1)*8]))
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}
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return value, nil
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}
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// ParseRationals knows how to parse an encoded list of unsigned rationals.
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func (p *Parser) ParseRationals(data []byte, unitCount uint32, byteOrder binary.ByteOrder) (value []Rational, 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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// TODO(dustin): Add test
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count := int(unitCount)
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if len(data) < (TypeRational.Size() * count) {
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log.Panic(ErrNotEnoughData)
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}
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value = make([]Rational, count)
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for i := 0; i < count; i++ {
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value[i].Numerator = byteOrder.Uint32(data[i*8:])
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value[i].Denominator = byteOrder.Uint32(data[i*8+4:])
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}
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return value, nil
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}
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// ParseSignedLongs knows how to parse an encoded list of signed longs.
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func (p *Parser) ParseSignedLongs(data []byte, unitCount uint32, byteOrder binary.ByteOrder) (value []int32, 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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// TODO(dustin): Add test
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count := int(unitCount)
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if len(data) < (TypeSignedLong.Size() * count) {
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log.Panic(ErrNotEnoughData)
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}
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b := bytes.NewBuffer(data)
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value = make([]int32, count)
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for i := 0; i < count; i++ {
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err := binary.Read(b, byteOrder, &value[i])
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log.PanicIf(err)
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}
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return value, nil
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}
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// ParseSignedRationals knows how to parse an encoded list of signed
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// rationals.
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func (p *Parser) ParseSignedRationals(data []byte, unitCount uint32, byteOrder binary.ByteOrder) (value []SignedRational, 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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// TODO(dustin): Add test
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count := int(unitCount)
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if len(data) < (TypeSignedRational.Size() * count) {
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log.Panic(ErrNotEnoughData)
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}
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b := bytes.NewBuffer(data)
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value = make([]SignedRational, count)
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for i := 0; i < count; i++ {
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err = binary.Read(b, byteOrder, &value[i].Numerator)
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log.PanicIf(err)
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err = binary.Read(b, byteOrder, &value[i].Denominator)
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log.PanicIf(err)
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}
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return value, nil
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}
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