Merge branch 'release/0.1.0'

Release 0.0.3

.gitignore

@@ -1,2 +1,2 @@
 /dist/
-goptimize
+goptimize*

CHANGELOG.md

@@ -2,6 +2,17 @@
 
 ## [dev]
 
+- Switch to go mods - go (>= 1.11 required)
+- Switch to axllent/semver for app updating
+
+
+## [0.0.3]
+
+- Detect & skip animated GIFs
+
+
+## [0.0.2]
+
 - Switch to [pflag](https://github.com/spf13/pflag) for better flag management
 
 

Makefile

@@ -5,8 +5,7 @@ LDFLAGS=-ldflags "-s -w -X main.version=${VERSION}"
 build = echo "\n\nBuilding $(1)-$(2)" && GOOS=$(1) GOARCH=$(2) go build ${LDFLAGS} -o dist/goptimize_${VERSION}_$(1)_$(2) \
 	&& bzip2 dist/goptimize_${VERSION}_$(1)_$(2)
 
-goptimize: *.go
-	go get github.com/disintegration/imaging golang.org/x/image/bmp golang.org/x/image/tiff github.com/axllent/gitrel github.com/spf13/pflag
+goptimize: *.go go.*
 	go build ${LDFLAGS} -o goptimize
 	rm -rf /tmp/go-*
 
@@ -16,7 +15,6 @@ clean:
 release:
 	mkdir -p dist
 	rm -f dist/goptimize_${VERSION}_*
-	go get github.com/disintegration/imaging golang.org/x/image/bmp golang.org/x/image/tiff github.com/axllent/gitrel github.com/spf13/pflag
 	$(call build,linux,amd64)
 	$(call build,linux,386)
 	$(call build,linux,arm)

README.md

@@ -1,11 +1,12 @@
 # Goptimizer - downscales and optimizes images
 
-Goptimizer is a commandline utility written in Golang. It downscales and optimizes JPEG, PNG and Gif files.
+[![Go Report Card](https://goreportcard.com/badge/github.com/axllent/goptimize)](https://goreportcard.com/report/github.com/axllent/goptimize)
+
+Goptimizer is a commandline utility written in Golang. It downscales and optimizes JPEG, PNG, GIF, TIFF and BMP files.
 
 Image downscaling/rotation is done within goptimize (`-m <width>x<height>`, see [Usage](#usage-options)), however optimization is done using the following additional tools (if they are installed):
 
-- jpegoptim
-- jpegtran (`libjpeg-turbo-progs`)
+- jpegtran (`libjpeg-turbo-progs`) or jpegoptim
 - optipng
 - pngquant
 - gifsicle
@@ -13,14 +14,16 @@ Image downscaling/rotation is done within goptimize (`-m <width>x<height>`, see
 
 ## Notes
 
-Both `jpegoptim` & `jpegtran` have almost identical optimization, so if both are installed then just `jpegtran` is used for JPG optimization. PNG optimization however will run through both `optipng` & `pngquant` (if installed) as this has definite advantages.
+Both `jpegoptim` & `jpegtran` have almost identical optimization, so if both are installed then just `jpegtran` is used for JPG optimization. PNG optimization however will run through both `optipng` & `pngquant` (if installed) as this can result in better optimization.
 
 It is highly recommended to install the necessary optimization tools, however they are not required to run goptimize.
 
-Goptimize will remove all exif data from JPEG files, auto-rotating those that relied on it.
+Goptimize will remove all exif data from JPEG files, auto-rotating those that depend on it for orientation.
 
 It will also preserve (by default) the file's original modification times (`-p=false` to disable).
 
+Animated GIF files are not supported and automatically get skipped.
+
 
 ## Usage options
 
@@ -54,11 +57,16 @@ Options:
 ## Install
 
 Download the appropriate binary from the [releases](https://github.com/axllent/goptimize/releases/latest), or if you have golang installed 
+
+
+### Build requirements
+
+Go >= 1.11 required.
+
 ```
 go get github.com/axllent/goptimize
 ```
 
-
 ## TODO
 
 Some ideas for the future:

go.mod

@@ -0,0 +1,10 @@
+module github.com/axllent/goptimize
+
+go 1.13
+
+require (
+	github.com/axllent/ghru v1.1.3
+	github.com/disintegration/imaging v1.6.1
+	github.com/spf13/pflag v1.0.5
+	golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8
+)

go.sum

@@ -0,0 +1,12 @@
+github.com/axllent/ghru v1.1.3 h1:n0jYsuqCYaHHAR6DraXZl8hpBY4j0XV47y5Lyym/jGo=
+github.com/axllent/ghru v1.1.3/go.mod h1:rFvMhcO1UAv2Cv6bXscS8EOc7qqNpfe8ZLp23utzs88=
+github.com/axllent/semver v0.0.0-20191103011746-394cefa91ee9 h1:LHNcCfePzgC/agAJs5a/5K3hFo8uW04bEdDKDkoX4do=
+github.com/axllent/semver v0.0.0-20191103011746-394cefa91ee9/go.mod h1:2xSPzvG8n9mRfdtxSvWvfTfQGWfHsMsHO1iZnKATMSc=
+github.com/disintegration/imaging v1.6.1 h1:JnBbK6ECIZb1NsWIikP9pd8gIlTIRx7fuDNpU9fsxOE=
+github.com/disintegration/imaging v1.6.1/go.mod h1:xuIt+sRxDFrHS0drzXUlCJthkJ8k7lkkUojDSR247MQ=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+golang.org/x/image v0.0.0-20180708004352-c73c2afc3b81/go.mod h1:ux5Hcp/YLpHSI86hEcLt0YII63i6oz57MZXIpbrjZUs=
+golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8 h1:hVwzHzIUGRjiF7EcUjqNxk3NCfkPxbDKRdnNE1Rpg0U=
+golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

goptimize.go

@@ -22,13 +22,12 @@ func Goptimize(file string) {
 	info, err := os.Stat(file)
 
 	if err != nil {
-		fmt.Printf("%s doesn't exist\n", file)
+		fmt.Printf("Error: %s doesn't exist\n", file)
 		return
 	}
 
 	if !info.Mode().IsRegular() {
-		// not a file
-		fmt.Printf("%s is not a file\n", file)
+		fmt.Printf("Error: %s is not a file\n", file)
 		return
 	}
 
@@ -36,17 +35,25 @@ func Goptimize(file string) {
 	src, err := imaging.Open(file, imaging.AutoOrientation(true))
 
 	if err != nil {
-		fmt.Printf("%v (%s)\n", err, file)
+		fmt.Printf("Error: %v (%s)\n", err, file)
 		return
 	}
 
 	format, err := imaging.FormatFromFilename(file)
 
 	if err != nil {
-		fmt.Printf("Cannot detect format: %v\n", err)
+		fmt.Printf("Error: cannot detect format: %v\n", err)
 		return
 	}
 
+	if format.String() == "GIF" {
+		// return if GIF is animated - unsupported
+		if err := IsGIFAnimated(file); err != nil {
+			fmt.Printf("Error: animated GIF not supported (%v)\n", file)
+			return
+		}
+	}
+
 	outFilename := filepath.Base(file)
 	outDir := filepath.Dir(file)
 	dstFile := filepath.Join(outDir, outFilename)
@@ -60,7 +67,7 @@ func Goptimize(file string) {
 	srcW := srcBounds.Dx()
 	srcH := srcBounds.Dy()
 
-	// Ensure scaling does not upscale image
+	// do not upscale image
 	imgMaxW := maxWidth
 	if imgMaxW == 0 || imgMaxW > srcW {
 		imgMaxW = srcW
@@ -79,24 +86,25 @@ func Goptimize(file string) {
 	tmpFile, err := ioutil.TempFile(os.TempDir(), "Goptimized-")
 
 	if err != nil {
-		fmt.Printf("Cannot create temporary file: %v\n", err)
+		fmt.Printf("Error: cannot create temporary file: %v\n", err)
 		return
 	}
 
 	defer os.Remove(tmpFile.Name())
 
-	if format.String() == "JPEG" {
+	switch imgType := format.String(); imgType {
+	case "JPEG":
 		err = jpeg.Encode(tmpFile, resized, &jpeg.Options{Quality: quality})
-	} else if format.String() == "PNG" {
+	case "PNG":
 		err = png.Encode(tmpFile, resized)
-	} else if format.String() == "GIF" {
+	case "GIF":
 		err = gif.Encode(tmpFile, resized, nil)
-	} else if format.String() == "TIFF" {
+	case "TIFF":
 		err = tiff.Encode(tmpFile, resized, nil)
-	} else if format.String() == "BMP" {
+	case "BMP":
 		err = bmp.Encode(tmpFile, resized)
-	} else {
-		fmt.Printf("Unsupported file type %s\n", file)
+	default:
+		fmt.Printf("Error: unsupported file type (%s)\n", file)
 		return
 	}
 
@@ -112,7 +120,7 @@ func Goptimize(file string) {
 	// so we can modify it with system processes
 	tmpFile.Close()
 
-	// Run through optimizers
+	// run through optimizers
 	if format.String() == "JPEG" {
 		// run one or the other, running both has no advantage
 		if jpegtran != "" {
@@ -179,7 +187,7 @@ func Goptimize(file string) {
 
 		fmt.Printf("Goptimized %s (%dx%d %s > %s %v%%)\n", dstFile, resultW, resultH, ByteCountSI(srcSize), ByteCountSI(dstSize), savedPercent)
 	} else {
-		// If the output directory is not the same,
+		// if the output directory is not the same,
 		// then write a copy of the original file
 		if outputDir != "" {
 			out, err := os.Create(dstFile)
@@ -289,3 +297,21 @@ func ByteCountSI(b int64) string {
 	}
 	return fmt.Sprintf("%.1f%cB", float64(b)/float64(div), "kMGTPE"[exp])
 }
+
+// IsGIFAnimated will return an error if the GIF file has more than 1 frame
+func IsGIFAnimated(gifFile string) error {
+	file, _ := os.Open(gifFile)
+	defer file.Close()
+
+	g, err := gif.DecodeAll(file)
+	if err != nil {
+		return err
+	}
+
+	// Single frame = OK
+	if len(g.Image) == 1 {
+		return nil
+	}
+
+	return fmt.Errorf("Animated gif")
+}

main.go

@@ -7,7 +7,7 @@ import (
 	"regexp"
 	"strconv"
 
-	"github.com/axllent/gitrel"
+	"github.com/axllent/ghru"
 	"github.com/spf13/pflag"
 )
 
@@ -87,15 +87,15 @@ func main() {
 
 	if showversion {
 		fmt.Println(fmt.Sprintf("Version: %s", version))
-		latest, _, _, err := gitrel.Latest("axllent/goptimize", "goptimize")
-		if err == nil && latest != version {
+		latest, _, _, err := ghru.Latest("axllent/goptimize", "goptimize")
+		if err == nil && ghru.GreaterThan(latest, version) {
 			fmt.Printf("Update available: %s\nRun `%s -u` to update.\n", latest, os.Args[0])
 		}
 		return
 	}
 
 	if update {
-		rel, err := gitrel.Update("axllent/goptimize", "goptimize", version)
+		rel, err := ghru.Update("axllent/goptimize", "goptimize", version)
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)