1 files changed, 0 insertions, 463 deletions
diff --git a/vendor/github.com/disintegration/imaging/io.go b/vendor/github.com/disintegration/imaging/io.go
deleted file mode 100644
index 557bf2f..0000000
--- a/vendor/github.com/disintegration/imaging/io.go
+++ /dev/null
@@ -1,463 +0,0 @@
-package imaging
-
-import (
-	"encoding/binary"
-	"errors"
-	"image"
-	"image/draw"
-	"image/gif"
-	"image/jpeg"
-	"image/png"
-	"io"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"golang.org/x/image/bmp"
-	"golang.org/x/image/tiff"
-)
-
-// Format is an image file format.
-type Format int
-
-// Image file formats.
-const (
-	JPEG Format = iota
-	PNG
-	GIF
-	TIFF
-	BMP
-)
-
-func (f Format) String() string {
-	switch f {
-	case JPEG:
-		return "JPEG"
-	case PNG:
-		return "PNG"
-	case GIF:
-		return "GIF"
-	case TIFF:
-		return "TIFF"
-	case BMP:
-		return "BMP"
-	default:
-		return "Unsupported"
-	}
-}
-
-var formatFromExt = map[string]Format{
-	"jpg":  JPEG,
-	"jpeg": JPEG,
-	"png":  PNG,
-	"tif":  TIFF,
-	"tiff": TIFF,
-	"bmp":  BMP,
-	"gif":  GIF,
-}
-
-// FormatFromExtension parses image format from extension:
-// "jpg" (or "jpeg"), "png", "gif", "tif" (or "tiff") and "bmp" are supported.
-func FormatFromExtension(ext string) (Format, error) {
-	if f, ok := formatFromExt[strings.ToLower(strings.TrimPrefix(ext, "."))]; ok {
-		return f, nil
-	}
-	return -1, ErrUnsupportedFormat
-}
-
-// FormatFromFilename parses image format from filename extension:
-// "jpg" (or "jpeg"), "png", "gif", "tif" (or "tiff") and "bmp" are supported.
-func FormatFromFilename(filename string) (Format, error) {
-	ext := filepath.Ext(filename)
-	return FormatFromExtension(ext)
-}
-
-var (
-	// ErrUnsupportedFormat means the given image format (or file extension) is unsupported.
-	ErrUnsupportedFormat = errors.New("imaging: unsupported image format")
-)
-
-type fileSystem interface {
-	Create(string) (io.WriteCloser, error)
-	Open(string) (io.ReadCloser, error)
-}
-
-type localFS struct{}
-
-func (localFS) Create(name string) (io.WriteCloser, error) { return os.Create(name) }
-func (localFS) Open(name string) (io.ReadCloser, error)    { return os.Open(name) }
-
-var fs fileSystem = localFS{}
-
-type decodeConfig struct {
-	autoOrientation bool
-}
-
-var defaultDecodeConfig = decodeConfig{
-	autoOrientation: false,
-}
-
-// DecodeOption sets an optional parameter for the Decode and Open functions.
-type DecodeOption func(*decodeConfig)
-
-// AutoOrientation returns a DecodeOption that sets the auto-orientation mode.
-// If auto-orientation is enabled, the image will be transformed after decoding
-// according to the EXIF orientation tag (if present). By default it's disabled.
-func AutoOrientation(enabled bool) DecodeOption {
-	return func(c *decodeConfig) {
-		c.autoOrientation = enabled
-	}
-}
-
-// Decode reads an image from r.
-func Decode(r io.Reader, opts ...DecodeOption) (image.Image, error) {
-	cfg := defaultDecodeConfig
-	for _, option := range opts {
-		option(&cfg)
-	}
-
-	if !cfg.autoOrientation {
-		img, _, err := image.Decode(r)
-		return img, err
-	}
-
-	var orient orientation
-	pr, pw := io.Pipe()
-	r = io.TeeReader(r, pw)
-	done := make(chan struct{})
-	go func() {
-		defer close(done)
-		orient = readOrientation(pr)
-		io.Copy(ioutil.Discard, pr)
-	}()
-
-	img, _, err := image.Decode(r)
-	pw.Close()
-	<-done
-	if err != nil {
-		return nil, err
-	}
-
-	return fixOrientation(img, orient), nil
-}
-
-// Open loads an image from file.
-//
-// Examples:
-//
-//	// Load an image from file.
-//	img, err := imaging.Open("test.jpg")
-//
-//	// Load an image and transform it depending on the EXIF orientation tag (if present).
-//	img, err := imaging.Open("test.jpg", imaging.AutoOrientation(true))
-//
-func Open(filename string, opts ...DecodeOption) (image.Image, error) {
-	file, err := fs.Open(filename)
-	if err != nil {
-		return nil, err
-	}
-	defer file.Close()
-	return Decode(file, opts...)
-}
-
-type encodeConfig struct {
-	jpegQuality         int
-	gifNumColors        int
-	gifQuantizer        draw.Quantizer
-	gifDrawer           draw.Drawer
-	pngCompressionLevel png.CompressionLevel
-}
-
-var defaultEncodeConfig = encodeConfig{
-	jpegQuality:         95,
-	gifNumColors:        256,
-	gifQuantizer:        nil,
-	gifDrawer:           nil,
-	pngCompressionLevel: png.DefaultCompression,
-}
-
-// EncodeOption sets an optional parameter for the Encode and Save functions.
-type EncodeOption func(*encodeConfig)
-
-// JPEGQuality returns an EncodeOption that sets the output JPEG quality.
-// Quality ranges from 1 to 100 inclusive, higher is better. Default is 95.
-func JPEGQuality(quality int) EncodeOption {
-	return func(c *encodeConfig) {
-		c.jpegQuality = quality
-	}
-}
-
-// GIFNumColors returns an EncodeOption that sets the maximum number of colors
-// used in the GIF-encoded image. It ranges from 1 to 256.  Default is 256.
-func GIFNumColors(numColors int) EncodeOption {
-	return func(c *encodeConfig) {
-		c.gifNumColors = numColors
-	}
-}
-
-// GIFQuantizer returns an EncodeOption that sets the quantizer that is used to produce
-// a palette of the GIF-encoded image.
-func GIFQuantizer(quantizer draw.Quantizer) EncodeOption {
-	return func(c *encodeConfig) {
-		c.gifQuantizer = quantizer
-	}
-}
-
-// GIFDrawer returns an EncodeOption that sets the drawer that is used to convert
-// the source image to the desired palette of the GIF-encoded image.
-func GIFDrawer(drawer draw.Drawer) EncodeOption {
-	return func(c *encodeConfig) {
-		c.gifDrawer = drawer
-	}
-}
-
-// PNGCompressionLevel returns an EncodeOption that sets the compression level
-// of the PNG-encoded image. Default is png.DefaultCompression.
-func PNGCompressionLevel(level png.CompressionLevel) EncodeOption {
-	return func(c *encodeConfig) {
-		c.pngCompressionLevel = level
-	}
-}
-
-// Encode writes the image img to w in the specified format (JPEG, PNG, GIF, TIFF or BMP).
-func Encode(w io.Writer, img image.Image, format Format, opts ...EncodeOption) error {
-	cfg := defaultEncodeConfig
-	for _, option := range opts {
-		option(&cfg)
-	}
-
-	var err error
-	switch format {
-	case JPEG:
-		var rgba *image.RGBA
-		if nrgba, ok := img.(*image.NRGBA); ok {
-			if nrgba.Opaque() {
-				rgba = &image.RGBA{
-					Pix:    nrgba.Pix,
-					Stride: nrgba.Stride,
-					Rect:   nrgba.Rect,
-				}
-			}
-		}
-		if rgba != nil {
-			err = jpeg.Encode(w, rgba, &jpeg.Options{Quality: cfg.jpegQuality})
-		} else {
-			err = jpeg.Encode(w, img, &jpeg.Options{Quality: cfg.jpegQuality})
-		}
-
-	case PNG:
-		enc := png.Encoder{CompressionLevel: cfg.pngCompressionLevel}
-		err = enc.Encode(w, img)
-
-	case GIF:
-		err = gif.Encode(w, img, &gif.Options{
-			NumColors: cfg.gifNumColors,
-			Quantizer: cfg.gifQuantizer,
-			Drawer:    cfg.gifDrawer,
-		})
-
-	case TIFF:
-		err = tiff.Encode(w, img, &tiff.Options{Compression: tiff.Deflate, Predictor: true})
-
-	case BMP:
-		err = bmp.Encode(w, img)
-
-	default:
-		err = ErrUnsupportedFormat
-	}
-	return err
-}
-
-// Save saves the image to file with the specified filename.
-// The format is determined from the filename extension:
-// "jpg" (or "jpeg"), "png", "gif", "tif" (or "tiff") and "bmp" are supported.
-//
-// Examples:
-//
-//	// Save the image as PNG.
-//	err := imaging.Save(img, "out.png")
-//
-//	// Save the image as JPEG with optional quality parameter set to 80.
-//	err := imaging.Save(img, "out.jpg", imaging.JPEGQuality(80))
-//
-func Save(img image.Image, filename string, opts ...EncodeOption) (err error) {
-	f, err := FormatFromFilename(filename)
-	if err != nil {
-		return err
-	}
-	file, err := fs.Create(filename)
-	if err != nil {
-		return err
-	}
-
-	defer func() {
-		cerr := file.Close()
-		if err == nil {
-			err = cerr
-		}
-	}()
-
-	return Encode(file, img, f, opts...)
-}
-
-// orientation is an EXIF flag that specifies the transformation
-// that should be applied to image to display it correctly.
-type orientation int
-
-const (
-	orientationUnspecified = 0
-	orientationNormal      = 1
-	orientationFlipH       = 2
-	orientationRotate180   = 3
-	orientationFlipV       = 4
-	orientationTranspose   = 5
-	orientationRotate270   = 6
-	orientationTransverse  = 7
-	orientationRotate90    = 8
-)
-
-// readOrientation tries to read the orientation EXIF flag from image data in r.
-// If the EXIF data block is not found or the orientation flag is not found
-// or any other error occures while reading the data, it returns the
-// orientationUnspecified (0) value.
-func readOrientation(r io.Reader) orientation {
-	const (
-		markerSOI      = 0xffd8
-		markerAPP1     = 0xffe1
-		exifHeader     = 0x45786966
-		byteOrderBE    = 0x4d4d
-		byteOrderLE    = 0x4949
-		orientationTag = 0x0112
-	)
-
-	// Check if JPEG SOI marker is present.
-	var soi uint16
-	if err := binary.Read(r, binary.BigEndian, &soi); err != nil {
-		return orientationUnspecified
-	}
-	if soi != markerSOI {
-		return orientationUnspecified // Missing JPEG SOI marker.
-	}
-
-	// Find JPEG APP1 marker.
-	for {
-		var marker, size uint16
-		if err := binary.Read(r, binary.BigEndian, &marker); err != nil {
-			return orientationUnspecified
-		}
-		if err := binary.Read(r, binary.BigEndian, &size); err != nil {
-			return orientationUnspecified
-		}
-		if marker>>8 != 0xff {
-			return orientationUnspecified // Invalid JPEG marker.
-		}
-		if marker == markerAPP1 {
-			break
-		}
-		if size < 2 {
-			return orientationUnspecified // Invalid block size.
-		}
-		if _, err := io.CopyN(ioutil.Discard, r, int64(size-2)); err != nil {
-			return orientationUnspecified
-		}
-	}
-
-	// Check if EXIF header is present.
-	var header uint32
-	if err := binary.Read(r, binary.BigEndian, &header); err != nil {
-		return orientationUnspecified
-	}
-	if header != exifHeader {
-		return orientationUnspecified
-	}
-	if _, err := io.CopyN(ioutil.Discard, r, 2); err != nil {
-		return orientationUnspecified
-	}
-
-	// Read byte order information.
-	var (
-		byteOrderTag uint16
-		byteOrder    binary.ByteOrder
-	)
-	if err := binary.Read(r, binary.BigEndian, &byteOrderTag); err != nil {
-		return orientationUnspecified
-	}
-	switch byteOrderTag {
-	case byteOrderBE:
-		byteOrder = binary.BigEndian
-	case byteOrderLE:
-		byteOrder = binary.LittleEndian
-	default:
-		return orientationUnspecified // Invalid byte order flag.
-	}
-	if _, err := io.CopyN(ioutil.Discard, r, 2); err != nil {
-		return orientationUnspecified
-	}
-
-	// Skip the EXIF offset.
-	var offset uint32
-	if err := binary.Read(r, byteOrder, &offset); err != nil {
-		return orientationUnspecified
-	}
-	if offset < 8 {
-		return orientationUnspecified // Invalid offset value.
-	}
-	if _, err := io.CopyN(ioutil.Discard, r, int64(offset-8)); err != nil {
-		return orientationUnspecified
-	}
-
-	// Read the number of tags.
-	var numTags uint16
-	if err := binary.Read(r, byteOrder, &numTags); err != nil {
-		return orientationUnspecified
-	}
-
-	// Find the orientation tag.
-	for i := 0; i < int(numTags); i++ {
-		var tag uint16
-		if err := binary.Read(r, byteOrder, &tag); err != nil {
-			return orientationUnspecified
-		}
-		if tag != orientationTag {
-			if _, err := io.CopyN(ioutil.Discard, r, 10); err != nil {
-				return orientationUnspecified
-			}
-			continue
-		}
-		if _, err := io.CopyN(ioutil.Discard, r, 6); err != nil {
-			return orientationUnspecified
-		}
-		var val uint16
-		if err := binary.Read(r, byteOrder, &val); err != nil {
-			return orientationUnspecified
-		}
-		if val < 1 || val > 8 {
-			return orientationUnspecified // Invalid tag value.
-		}
-		return orientation(val)
-	}
-	return orientationUnspecified // Missing orientation tag.
-}
-
-// fixOrientation applies a transform to img corresponding to the given orientation flag.
-func fixOrientation(img image.Image, o orientation) image.Image {
-	switch o {
-	case orientationNormal:
-	case orientationFlipH:
-		img = FlipH(img)
-	case orientationFlipV:
-		img = FlipV(img)
-	case orientationRotate90:
-		img = Rotate90(img)
-	case orientationRotate180:
-		img = Rotate180(img)
-	case orientationRotate270:
-		img = Rotate270(img)
-	case orientationTranspose:
-		img = Transpose(img)
-	case orientationTransverse:
-		img = Transverse(img)
-	}
-	return img
-}