7 files changed, 508 insertions, 0 deletions
diff --git a/weed/images/favicon.go b/weed/images/favicon.go
new file mode 100644
index 000000000..09504976c
--- /dev/null
+++ b/weed/images/favicon.go
@@ -0,0 +1,236 @@
+// Code generated by go-bindata.
+// sources:
+// favicon/favicon.ico
+
+package images
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+func bindataRead(data []byte, name string) ([]byte, error) {
+	gz, err := gzip.NewReader(bytes.NewBuffer(data))
+	if err != nil {
+		return nil, fmt.Errorf("Read %q: %v", name, err)
+	}
+
+	var buf bytes.Buffer
+	_, err = io.Copy(&buf, gz)
+	clErr := gz.Close()
+
+	if err != nil {
+		return nil, fmt.Errorf("Read %q: %v", name, err)
+	}
+	if clErr != nil {
+		return nil, err
+	}
+
+	return buf.Bytes(), nil
+}
+
+type asset struct {
+	bytes []byte
+	info  os.FileInfo
+}
+
+type bindataFileInfo struct {
+	name    string
+	size    int64
+	mode    os.FileMode
+	modTime time.Time
+}
+
+func (fi bindataFileInfo) Name() string {
+	return fi.name
+}
+func (fi bindataFileInfo) Size() int64 {
+	return fi.size
+}
+func (fi bindataFileInfo) Mode() os.FileMode {
+	return fi.mode
+}
+func (fi bindataFileInfo) ModTime() time.Time {
+	return fi.modTime
+}
+func (fi bindataFileInfo) IsDir() bool {
+	return false
+}
+func (fi bindataFileInfo) Sys() interface{} {
+	return nil
+}
+
+var _favicon = []byte("\x1f\x8b\x08\x00\x00\x09\x6e\x88\x00\xff\xec\x94\x5f\x48\x53\x51\x1c\xc7\xbf\x77\xce\xeb\xf1\xff\x9d\x53\x37\xe7\xbf\x4d\xcd\x2c\x08\xa2\x87\xea\xd1\x82\x9e\xa2\x88\x5e\x7a\x8a\x82\x1e\xf2\x21\x7a\x28\x42\xc9\x7a\xb0\x08\x22\x4d\x08\xfa\x43\x25\x61\x05\x4b\xac\xb7\x7a\x92\x8a\x82\xa2\x34\x59\x5c\x4d\x5b\x39\x2d\xfb\xb3\x9c\xe0\x52\xb7\x5a\x6e\x73\xeb\xdc\xbb\xed\xb6\x5d\xc7\x89\x7a\xa8\xa0\xfb\x81\x7b\xef\x39\xbf\xef\x3d\xf7\xfe\xce\x79\xf8\x00\x1c\x74\x10\x04\xe9\x49\xd0\x94\x09\xd4\x03\xb0\x5a\x63\xf3\x1e\x02\x74\xd2\x5a\x03\xad\x09\x52\x1d\xb1\xba\x0c\x87\x1f\x70\xb1\xab\xff\xd0\x2a\x0c\x9d\xde\x0e\xf1\xe4\x66\xbc\xba\xb2\x0f\xe1\xc0\x3c\x5e\x77\xef\x87\xe7\xe9\x4d\xcc\x3a\x1f\x21\x1a\x8d\x22\x1a\x89\xc0\x7d\xbf\x0b\x03\xcd\xab\x31\xde\x73\x18\x6f\x6e\xb5\x61\xea\xf1\x0d\x84\xbf\xf9\x31\x76\xfd\x20\xbe\x4e\xb9\x20\xb6\x6f\xc5\xb3\xd6\xb5\x78\x7e\x62\x13\x7d\xae\x83\xa3\xad\x11\x73\xae\x7e\xbc\x38\xb3\x03\x23\x67\x77\x62\x61\xd6\x03\x67\x57\x13\x1c\xc7\x37\x62\xa2\xf7\x28\x22\xe1\x10\x7c\x93\x22\x42\x7e\x2f\x82\x73\xd3\x18\x68\x59\x03\x97\xbd\x05\x43\x1d\xdb\xa0\xa1\xa1\xf1\xaf\x51\x5b\x97\x3c\xab\x29\x20\xe6\xa4\x69\x71\x35\x21\x56\x1b\x25\x3e\xaf\xac\x22\x31\x12\x2f\x94\x59\x48\x79\x05\x45\x7e\xb9\x84\xde\x4a\x4d\xca\xfa\x0c\x43\x11\xbd\xe7\x1a\xa5\x71\x3e\xa5\x80\x14\x0a\x89\x2c\xfe\x19\x92\x17\x9f\xf3\x94\x2c\x92\x9d\x93\x9b\xf4\xf3\x0c\x7d\x66\x4a\xa7\x9c\xee\xb7\x37\xf9\xcb\x48\x9e\xb5\xd2\xab\x11\x49\x9e\xd5\x27\x37\x03\xc5\xb3\x8e\x63\x1b\xe0\x79\xd2\x8b\x4f\x0f\xaf\xca\x2e\x95\x1c\x2b\xf9\x75\x7e\x7c\x50\x76\xe0\xe8\xf9\x5d\xb2\x2f\xbd\xc3\x77\x11\x59\x0c\x61\xf2\x76\x3b\x66\xc4\x3e\x0c\x1e\x59\x8f\xc0\xf4\x84\xec\xd6\x0f\x7d\xe7\xe0\x7f\x3f\x22\x7b\x33\xf4\xe5\xb3\xec\x54\xc9\x9d\x8b\xc1\x00\x75\x73\x2b\x86\xa9\xcb\xdf\xdd\xe9\x94\x1d\xed\xb2\x37\x53\x4f\xdb\xe1\x7b\x2b\xe2\xe3\xbd\x4b\x78\x79\x71\x0f\x82\xbe\x19\x38\x2f\xef\xa5\xdf\xee\xc0\xe8\x85\xdd\x58\xf0\xba\xe1\x7e\xd0\x8d\xb1\x6b\x07\x64\x9f\x8b\xa7\xb6\xfc\xb9\xc3\xd3\xd0\xd0\xf8\x7b\xac\xb4\x31\xe3\x86\x15\x15\x8c\x54\xbf\x9c\xe7\x19\x39\x97\xc5\xb3\xf2\x65\x44\x32\x79\xbd\x31\x81\x2a\xae\xcb\xe3\x53\x49\x8d\x6b\x79\x35\xaa\xf5\xb6\x1a\x76\x0e\x43\xb5\x54\xb5\xe6\x24\x58\xd2\xa0\xa9\x8a\xd9\x3f\xa5\xd2\x9c\x2e\x2f\xb7\x28\x43\x8b\x90\x26\xcf\x34\x97\x29\xe3\x42\x4b\x9a\x9c\xe7\x75\x26\xc6\x5f\x69\xce\x1b\x0d\x4b\xca\xca\x41\x16\x4b\xfb\x2a\x29\x55\xe7\xea\xf3\x2a\xfa\x49\x2e\x18\x98\x79\x41\xa1\x6a\xbd\x72\x90\xb9\x34\xcd\xcb\x67\xf6\x4f\xb2\x99\xfb\xcb\xe2\x18\x31\x74\x19\x7a\x56\x0c\xe6\xe2\xff\x97\xef\x01\x00\x00\xff\xff\x3e\xd4\x17\xe7\x36\x0e\x00\x00")
+
+func faviconBytes() ([]byte, error) {
+	return bindataRead(
+		_favicon,
+		"favicon/favicon.ico",
+	)
+}
+
+func favicon() (*asset, error) {
+	bytes, err := faviconBytes()
+	if err != nil {
+		return nil, err
+	}
+
+	info := bindataFileInfo{name: "favicon/favicon.ico", size: 3638, mode: os.FileMode(420), modTime: time.Unix(1460621502, 0)}
+	a := &asset{bytes: bytes, info: info}
+	return a, nil
+}
+
+// Asset loads and returns the asset for the given name.
+// It returns an error if the asset could not be found or
+// could not be loaded.
+func Asset(name string) ([]byte, error) {
+	cannonicalName := strings.Replace(name, "\\", "/", -1)
+	if f, ok := _bindata[cannonicalName]; ok {
+		a, err := f()
+		if err != nil {
+			return nil, fmt.Errorf("Asset %s can't read by error: %v", name, err)
+		}
+		return a.bytes, nil
+	}
+	return nil, fmt.Errorf("Asset %s not found", name)
+}
+
+// MustAsset is like Asset but panics when Asset would return an error.
+// It simplifies safe initialization of global variables.
+func MustAsset(name string) []byte {
+	a, err := Asset(name)
+	if err != nil {
+		panic("asset: Asset(" + name + "): " + err.Error())
+	}
+
+	return a
+}
+
+// AssetInfo loads and returns the asset info for the given name.
+// It returns an error if the asset could not be found or
+// could not be loaded.
+func AssetInfo(name string) (os.FileInfo, error) {
+	cannonicalName := strings.Replace(name, "\\", "/", -1)
+	if f, ok := _bindata[cannonicalName]; ok {
+		a, err := f()
+		if err != nil {
+			return nil, fmt.Errorf("AssetInfo %s can't read by error: %v", name, err)
+		}
+		return a.info, nil
+	}
+	return nil, fmt.Errorf("AssetInfo %s not found", name)
+}
+
+// AssetNames returns the names of the assets.
+func AssetNames() []string {
+	names := make([]string, 0, len(_bindata))
+	for name := range _bindata {
+		names = append(names, name)
+	}
+	return names
+}
+
+// _bindata is a table, holding each asset generator, mapped to its name.
+var _bindata = map[string]func() (*asset, error){
+	"favicon/favicon.ico": favicon,
+}
+
+// AssetDir returns the file names below a certain
+// directory embedded in the file by go-bindata.
+// For example if you run go-bindata on data/... and data contains the
+// following hierarchy:
+//     data/
+//       foo.txt
+//       img/
+//         a.png
+//         b.png
+// then AssetDir("data") would return []string{"foo.txt", "img"}
+// AssetDir("data/img") would return []string{"a.png", "b.png"}
+// AssetDir("foo.txt") and AssetDir("notexist") would return an error
+// AssetDir("") will return []string{"data"}.
+func AssetDir(name string) ([]string, error) {
+	node := _bintree
+	if len(name) != 0 {
+		cannonicalName := strings.Replace(name, "\\", "/", -1)
+		pathList := strings.Split(cannonicalName, "/")
+		for _, p := range pathList {
+			node = node.Children[p]
+			if node == nil {
+				return nil, fmt.Errorf("Asset %s not found", name)
+			}
+		}
+	}
+	if node.Func != nil {
+		return nil, fmt.Errorf("Asset %s not found", name)
+	}
+	rv := make([]string, 0, len(node.Children))
+	for childName := range node.Children {
+		rv = append(rv, childName)
+	}
+	return rv, nil
+}
+
+type bintree struct {
+	Func     func() (*asset, error)
+	Children map[string]*bintree
+}
+var _bintree = &bintree{nil, map[string]*bintree{
+	"favicon": &bintree{nil, map[string]*bintree{
+		"favicon.ico": &bintree{favicon, map[string]*bintree{}},
+	}},
+}}
+
+// RestoreAsset restores an asset under the given directory
+func RestoreAsset(dir, name string) error {
+	data, err := Asset(name)
+	if err != nil {
+		return err
+	}
+	info, err := AssetInfo(name)
+	if err != nil {
+		return err
+	}
+	err = os.MkdirAll(_filePath(dir, filepath.Dir(name)), os.FileMode(0755))
+	if err != nil {
+		return err
+	}
+	err = ioutil.WriteFile(_filePath(dir, name), data, info.Mode())
+	if err != nil {
+		return err
+	}
+	err = os.Chtimes(_filePath(dir, name), info.ModTime(), info.ModTime())
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// RestoreAssets restores an asset under the given directory recursively
+func RestoreAssets(dir, name string) error {
+	children, err := AssetDir(name)
+	// File
+	if err != nil {
+		return RestoreAsset(dir, name)
+	}
+	// Dir
+	for _, child := range children {
+		err = RestoreAssets(dir, filepath.Join(name, child))
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func _filePath(dir, name string) string {
+	cannonicalName := strings.Replace(name, "\\", "/", -1)
+	return filepath.Join(append([]string{dir}, strings.Split(cannonicalName, "/")...)...)
+}
+
diff --git a/weed/images/favicon/favicon.ico b/weed/images/favicon/favicon.ico
new file mode 100644
index 000000000..cc6f531b3
--- /dev/null
+++ b/weed/images/favicon/favicon.ico
diff --git a/weed/images/orientation.go b/weed/images/orientation.go
new file mode 100644
index 000000000..4bff89311
--- /dev/null
+++ b/weed/images/orientation.go
@@ -0,0 +1,182 @@
+package images
+
+import (
+	"bytes"
+	"image"
+	"image/draw"
+	"image/jpeg"
+	"log"
+
+	"github.com/rwcarlsen/goexif/exif"
+)
+
+//many code is copied from http://camlistore.org/pkg/images/images.go
+func FixJpgOrientation(data []byte) (oriented []byte) {
+	ex, err := exif.Decode(bytes.NewReader(data))
+	if err != nil {
+		return data
+	}
+	tag, err := ex.Get(exif.Orientation)
+	if err != nil {
+		return data
+	}
+	angle := 0
+	flipMode := FlipDirection(0)
+	orient, err := tag.Int(0)
+	if err != nil {
+		return data
+	}
+	switch orient {
+	case topLeftSide:
+		// do nothing
+		return data
+	case topRightSide:
+		flipMode = 2
+	case bottomRightSide:
+		angle = 180
+	case bottomLeftSide:
+		angle = 180
+		flipMode = 2
+	case leftSideTop:
+		angle = -90
+		flipMode = 2
+	case rightSideTop:
+		angle = -90
+	case rightSideBottom:
+		angle = 90
+		flipMode = 2
+	case leftSideBottom:
+		angle = 90
+	}
+
+	if srcImage, _, err := image.Decode(bytes.NewReader(data)); err == nil {
+		dstImage := flip(rotate(srcImage, angle), flipMode)
+		var buf bytes.Buffer
+		jpeg.Encode(&buf, dstImage, nil)
+		return buf.Bytes()
+	}
+
+	return data
+}
+
+// Exif Orientation Tag values
+// http://sylvana.net/jpegcrop/exif_orientation.html
+const (
+	topLeftSide     = 1
+	topRightSide    = 2
+	bottomRightSide = 3
+	bottomLeftSide  = 4
+	leftSideTop     = 5
+	rightSideTop    = 6
+	rightSideBottom = 7
+	leftSideBottom  = 8
+)
+
+// The FlipDirection type is used by the Flip option in DecodeOpts
+// to indicate in which direction to flip an image.
+type FlipDirection int
+
+// FlipVertical and FlipHorizontal are two possible FlipDirections
+// values to indicate in which direction an image will be flipped.
+const (
+	FlipVertical FlipDirection = 1 << iota
+	FlipHorizontal
+)
+
+type DecodeOpts struct {
+	// Rotate specifies how to rotate the image.
+	// If nil, the image is rotated automatically based on EXIF metadata.
+	// If an int, Rotate is the number of degrees to rotate
+	// counter clockwise and must be one of 0, 90, -90, 180, or
+	// -180.
+	Rotate interface{}
+
+	// Flip specifies how to flip the image.
+	// If nil, the image is flipped automatically based on EXIF metadata.
+	// Otherwise, Flip is a FlipDirection bitfield indicating how to flip.
+	Flip interface{}
+}
+
+func rotate(im image.Image, angle int) image.Image {
+	var rotated *image.NRGBA
+	// trigonometric (i.e counter clock-wise)
+	switch angle {
+	case 90:
+		newH, newW := im.Bounds().Dx(), im.Bounds().Dy()
+		rotated = image.NewNRGBA(image.Rect(0, 0, newW, newH))
+		for y := 0; y < newH; y++ {
+			for x := 0; x < newW; x++ {
+				rotated.Set(x, y, im.At(newH-1-y, x))
+			}
+		}
+	case -90:
+		newH, newW := im.Bounds().Dx(), im.Bounds().Dy()
+		rotated = image.NewNRGBA(image.Rect(0, 0, newW, newH))
+		for y := 0; y < newH; y++ {
+			for x := 0; x < newW; x++ {
+				rotated.Set(x, y, im.At(y, newW-1-x))
+			}
+		}
+	case 180, -180:
+		newW, newH := im.Bounds().Dx(), im.Bounds().Dy()
+		rotated = image.NewNRGBA(image.Rect(0, 0, newW, newH))
+		for y := 0; y < newH; y++ {
+			for x := 0; x < newW; x++ {
+				rotated.Set(x, y, im.At(newW-1-x, newH-1-y))
+			}
+		}
+	default:
+		return im
+	}
+	return rotated
+}
+
+// flip returns a flipped version of the image im, according to
+// the direction(s) in dir.
+// It may flip the imput im in place and return it, or it may allocate a
+// new NRGBA (if im is an *image.YCbCr).
+func flip(im image.Image, dir FlipDirection) image.Image {
+	if dir == 0 {
+		return im
+	}
+	ycbcr := false
+	var nrgba image.Image
+	dx, dy := im.Bounds().Dx(), im.Bounds().Dy()
+	di, ok := im.(draw.Image)
+	if !ok {
+		if _, ok := im.(*image.YCbCr); !ok {
+			log.Printf("failed to flip image: input does not satisfy draw.Image")
+			return im
+		}
+		// because YCbCr does not implement Set, we replace it with a new NRGBA
+		ycbcr = true
+		nrgba = image.NewNRGBA(image.Rect(0, 0, dx, dy))
+		di, ok = nrgba.(draw.Image)
+		if !ok {
+			log.Print("failed to flip image: could not cast an NRGBA to a draw.Image")
+			return im
+		}
+	}
+	if dir&FlipHorizontal != 0 {
+		for y := 0; y < dy; y++ {
+			for x := 0; x < dx/2; x++ {
+				old := im.At(x, y)
+				di.Set(x, y, im.At(dx-1-x, y))
+				di.Set(dx-1-x, y, old)
+			}
+		}
+	}
+	if dir&FlipVertical != 0 {
+		for y := 0; y < dy/2; y++ {
+			for x := 0; x < dx; x++ {
+				old := im.At(x, y)
+				di.Set(x, y, im.At(x, dy-1-y))
+				di.Set(x, dy-1-y, old)
+			}
+		}
+	}
+	if ycbcr {
+		return nrgba
+	}
+	return im
+}
diff --git a/weed/images/orientation_test.go b/weed/images/orientation_test.go
new file mode 100644
index 000000000..adab17ff8
--- /dev/null
+++ b/weed/images/orientation_test.go
@@ -0,0 +1,17 @@
+package images
+
+import (
+	"io/ioutil"
+	"testing"
+)
+
+func TestXYZ(t *testing.T) {
+	fname := "sample1.jpg"
+
+	dat, _ := ioutil.ReadFile(fname)
+
+	fixed_data := FixJpgOrientation(dat)
+
+	ioutil.WriteFile("fixed1.jpg", fixed_data, 0644)
+
+}
diff --git a/weed/images/preprocess.go b/weed/images/preprocess.go
new file mode 100644
index 000000000..0d6cb2d9e
--- /dev/null
+++ b/weed/images/preprocess.go
@@ -0,0 +1,27 @@
+package images
+
+import (
+	"path/filepath"
+	"strings"
+)
+
+/*
+* Preprocess image files on client side.
+* 1. possibly adjust the orientation
+* 2. resize the image to a width or height limit
+* 3. remove the exif data
+* Call this function on any file uploaded to SeaweedFS
+*
+ */
+func MaybePreprocessImage(filename string, data []byte, width, height int) (resized []byte, w int, h int) {
+	ext := filepath.Ext(filename)
+	ext = strings.ToLower(ext)
+	switch ext {
+	case ".png", ".gif":
+		return Resized(ext, data, width, height)
+	case ".jpg", ".jpeg":
+		data = FixJpgOrientation(data)
+		return Resized(ext, data, width, height)
+	}
+	return data, 0, 0
+}
diff --git a/weed/images/resizing.go b/weed/images/resizing.go
new file mode 100644
index 000000000..7e4a88c42
--- /dev/null
+++ b/weed/images/resizing.go
@@ -0,0 +1,46 @@
+package images
+
+import (
+	"bytes"
+	"image"
+	"image/gif"
+	"image/jpeg"
+	"image/png"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/disintegration/imaging"
+)
+
+func Resized(ext string, data []byte, width, height int) (resized []byte, w int, h int) {
+	if width == 0 && height == 0 {
+		return data, 0, 0
+	}
+	srcImage, _, err := image.Decode(bytes.NewReader(data))
+	if err == nil {
+		bounds := srcImage.Bounds()
+		var dstImage *image.NRGBA
+		if bounds.Dx() > width && width != 0 || bounds.Dy() > height && height != 0 {
+			if width == height && bounds.Dx() != bounds.Dy() {
+				dstImage = imaging.Thumbnail(srcImage, width, height, imaging.Lanczos)
+				w, h = width, height
+			} else {
+				dstImage = imaging.Resize(srcImage, width, height, imaging.Lanczos)
+			}
+		} else {
+			return data, bounds.Dx(), bounds.Dy()
+		}
+		var buf bytes.Buffer
+		switch ext {
+		case ".png":
+			png.Encode(&buf, dstImage)
+		case ".jpg", ".jpeg":
+			jpeg.Encode(&buf, dstImage, nil)
+		case ".gif":
+			gif.Encode(&buf, dstImage, nil)
+		}
+		return buf.Bytes(), dstImage.Bounds().Dx(), dstImage.Bounds().Dy()
+	} else {
+		glog.Error(err)
+	}
+	return data, 0, 0
+}
diff --git a/weed/images/sample1.jpg b/weed/images/sample1.jpg
new file mode 100644
index 000000000..991b59bac
--- /dev/null
+++ b/weed/images/sample1.jpg