mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2025-12-15 11:43:02 -06:00
Grand test fixup (#138)
* start fixing up tests * fix up tests + automate with drone * fiddle with linting * messing about with drone.yml * some more fiddling * hmmm * add cache * add vendor directory * verbose * ci updates * update some little things * update sig
This commit is contained in:
Tobi Smethurst
GitHub
parent
329a5e8144
commit
98263a7de6
2677 changed files with 1090869 additions and 219 deletions
367
vendor/github.com/dsoprea/go-exif/value_context.go
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vendored
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367
vendor/github.com/dsoprea/go-exif/value_context.go
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@ -0,0 +1,367 @@
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package exif
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import (
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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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parser *Parser
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)
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// ValueContext describes all of the parameters required to find and extract
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// the actual tag value.
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type ValueContext struct {
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unitCount uint32
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valueOffset uint32
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rawValueOffset []byte
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addressableData []byte
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tagType TagTypePrimitive
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byteOrder binary.ByteOrder
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// undefinedValueTagType is the effective type to use if this is an
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// "undefined" value.
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undefinedValueTagType TagTypePrimitive
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ifdPath string
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tagId uint16
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}
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func newValueContext(ifdPath string, tagId uint16, unitCount, valueOffset uint32, rawValueOffset, addressableData []byte, tagType TagTypePrimitive, byteOrder binary.ByteOrder) *ValueContext {
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return &ValueContext{
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unitCount: unitCount,
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valueOffset: valueOffset,
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rawValueOffset: rawValueOffset,
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addressableData: addressableData,
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tagType: tagType,
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byteOrder: byteOrder,
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ifdPath: ifdPath,
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tagId: tagId,
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}
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}
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func newValueContextFromTag(ite *IfdTagEntry, addressableData []byte, byteOrder binary.ByteOrder) *ValueContext {
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return newValueContext(
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ite.IfdPath,
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ite.TagId,
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ite.UnitCount,
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ite.ValueOffset,
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ite.RawValueOffset,
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addressableData,
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ite.TagType,
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byteOrder)
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}
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func (vc *ValueContext) SetUnknownValueType(tagType TagTypePrimitive) {
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vc.undefinedValueTagType = tagType
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}
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func (vc *ValueContext) UnitCount() uint32 {
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return vc.unitCount
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}
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func (vc *ValueContext) ValueOffset() uint32 {
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return vc.valueOffset
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}
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func (vc *ValueContext) RawValueOffset() []byte {
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return vc.rawValueOffset
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}
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func (vc *ValueContext) AddressableData() []byte {
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return vc.addressableData
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}
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// isEmbedded returns whether the value is embedded or a reference. This can't
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// be precalculated since the size is not defined for all types (namely the
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// "undefined" types).
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func (vc *ValueContext) isEmbedded() bool {
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tagType := vc.effectiveValueType()
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return (tagType.Size() * int(vc.unitCount)) <= 4
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}
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func (vc *ValueContext) effectiveValueType() (tagType TagTypePrimitive) {
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if vc.tagType == TypeUndefined {
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tagType = vc.undefinedValueTagType
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if tagType == 0 {
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log.Panicf("undefined-value type not set")
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}
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} else {
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tagType = vc.tagType
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}
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return tagType
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}
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func (vc *ValueContext) readRawEncoded() (rawBytes []byte, 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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tagType := vc.effectiveValueType()
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unitSizeRaw := uint32(tagType.Size())
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if vc.isEmbedded() == true {
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byteLength := unitSizeRaw * vc.unitCount
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return vc.rawValueOffset[:byteLength], nil
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} else {
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return vc.addressableData[vc.valueOffset : vc.valueOffset+vc.unitCount*unitSizeRaw], nil
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}
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}
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// Format returns a string representation for the value.
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//
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// Where the type is not ASCII, `justFirst` indicates whether to just stringify
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// the first item in the slice (or return an empty string if the slice is
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// empty).
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//
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// Since this method lacks the information to process undefined-type tags (e.g.
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// byte-order, tag-ID, IFD type), it will return an error if attempted. See
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// `Undefined()`.
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func (vc *ValueContext) Format() (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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rawBytes, err := vc.readRawEncoded()
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log.PanicIf(err)
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phrase, err := Format(rawBytes, vc.tagType, false, vc.byteOrder)
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log.PanicIf(err)
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return phrase, nil
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}
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// FormatOne is similar to `Format` but only gets and stringifies the first
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// item.
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func (vc *ValueContext) FormatFirst() (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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rawBytes, err := vc.readRawEncoded()
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log.PanicIf(err)
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phrase, err := Format(rawBytes, vc.tagType, true, vc.byteOrder)
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log.PanicIf(err)
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return phrase, nil
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}
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func (vc *ValueContext) ReadBytes() (value []byte, 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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rawValue, err := vc.readRawEncoded()
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log.PanicIf(err)
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value, err = parser.ParseBytes(rawValue, vc.unitCount)
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log.PanicIf(err)
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return value, nil
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}
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func (vc *ValueContext) ReadAscii() (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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rawValue, err := vc.readRawEncoded()
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log.PanicIf(err)
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value, err = parser.ParseAscii(rawValue, vc.unitCount)
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log.PanicIf(err)
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return value, nil
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}
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func (vc *ValueContext) ReadAsciiNoNul() (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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rawValue, err := vc.readRawEncoded()
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log.PanicIf(err)
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value, err = parser.ParseAsciiNoNul(rawValue, vc.unitCount)
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log.PanicIf(err)
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return value, nil
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}
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func (vc *ValueContext) ReadShorts() (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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rawValue, err := vc.readRawEncoded()
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log.PanicIf(err)
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value, err = parser.ParseShorts(rawValue, vc.unitCount, vc.byteOrder)
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log.PanicIf(err)
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return value, nil
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}
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func (vc *ValueContext) ReadLongs() (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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rawValue, err := vc.readRawEncoded()
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log.PanicIf(err)
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value, err = parser.ParseLongs(rawValue, vc.unitCount, vc.byteOrder)
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log.PanicIf(err)
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return value, nil
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}
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func (vc *ValueContext) ReadRationals() (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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rawValue, err := vc.readRawEncoded()
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log.PanicIf(err)
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value, err = parser.ParseRationals(rawValue, vc.unitCount, vc.byteOrder)
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log.PanicIf(err)
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return value, nil
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}
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func (vc *ValueContext) ReadSignedLongs() (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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rawValue, err := vc.readRawEncoded()
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log.PanicIf(err)
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value, err = parser.ParseSignedLongs(rawValue, vc.unitCount, vc.byteOrder)
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log.PanicIf(err)
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return value, nil
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}
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func (vc *ValueContext) ReadSignedRationals() (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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rawValue, err := vc.readRawEncoded()
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log.PanicIf(err)
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value, err = parser.ParseSignedRationals(rawValue, vc.unitCount, vc.byteOrder)
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log.PanicIf(err)
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return value, nil
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}
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// Values knows how to resolve the given value. This value is always a list
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// (undefined-values aside), so we're named accordingly.
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//
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// Since this method lacks the information to process unknown-type tags (e.g.
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// byte-order, tag-ID, IFD type), it will return an error if attempted. See
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// `Undefined()`.
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func (vc *ValueContext) Values() (values interface{}, 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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if vc.tagType == TypeByte {
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values, err = vc.ReadBytes()
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log.PanicIf(err)
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} else if vc.tagType == TypeAscii {
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values, err = vc.ReadAscii()
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log.PanicIf(err)
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} else if vc.tagType == TypeAsciiNoNul {
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values, err = vc.ReadAsciiNoNul()
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log.PanicIf(err)
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} else if vc.tagType == TypeShort {
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values, err = vc.ReadShorts()
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log.PanicIf(err)
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} else if vc.tagType == TypeLong {
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values, err = vc.ReadLongs()
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log.PanicIf(err)
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} else if vc.tagType == TypeRational {
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values, err = vc.ReadRationals()
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log.PanicIf(err)
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} else if vc.tagType == TypeSignedLong {
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values, err = vc.ReadSignedLongs()
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log.PanicIf(err)
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} else if vc.tagType == TypeSignedRational {
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values, err = vc.ReadSignedRationals()
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log.PanicIf(err)
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} else if vc.tagType == TypeUndefined {
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log.Panicf("will not parse undefined-type value")
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// Never called.
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return nil, nil
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} else {
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log.Panicf("value of type [%s] is unparseable", vc.tagType)
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// Never called.
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return nil, nil
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}
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return values, nil
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}
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// Undefined attempts to identify and decode supported undefined-type fields.
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// This is the primary, preferred interface to reading undefined values.
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func (vc *ValueContext) Undefined() (value interface{}, 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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value, err = UndefinedValue(vc.ifdPath, vc.tagId, vc, vc.byteOrder)
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if err != nil {
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if err == ErrUnhandledUnknownTypedTag {
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return nil, err
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}
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log.Panic(err)
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}
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return value, nil
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}
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func init() {
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parser = &Parser{}
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}
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