Merge branch 'release/0.2.0'

Release 0.1.0

.gitignore

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

CHANGELOG.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## [0.2.0]
+
+- Add threaded option (`-t`) to use all CPU cores
+
+
+## [0.1.0]
+
+- Switch to go mods - go (>= 1.11 required)
+- Switch to axllent/semver for app updating
+
+
 ## [0.0.3]
 
 - Detect & skip animated GIFs

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

@@ -2,12 +2,11 @@
 
 [![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 and Gif files.
+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
@@ -15,14 +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
 
@@ -34,6 +35,7 @@ Options:
   -m, --max string         downscale to a maximum width & height in pixels (<width>x<height>)
   -o, --out string         output directory (default overwrites original)
   -p, --preserve           preserve file modification times (default true)
+  -t, --threaded           run multi-threaded (use all CPU cores)
   -u, --update             update to latest release
   -v, --version            show version number
   -h, --help               show help
@@ -56,11 +58,16 @@ 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=

main.go

@@ -5,9 +5,11 @@ import (
 	"os"
 	"os/exec"
 	"regexp"
+	"runtime"
 	"strconv"
+	"sync"
 
-	"github.com/axllent/gitrel"
+	"github.com/axllent/ghru"
 	"github.com/spf13/pflag"
 )
 
@@ -22,6 +24,7 @@ var (
 	optipng          string
 	pngquant         string
 	gifsicle         string
+	threads          = 1
 	version          = "dev"
 )
 
@@ -51,13 +54,14 @@ func main() {
 	}
 
 	var maxSizes string
-	var update, showversion, showhelp bool
+	var multiThreaded, update, showversion, showhelp bool
 
 	flag.IntVarP(&quality, "quality", "q", 75, "quality, JPEG only")
 	flag.StringVarP(&maxSizes, "max", "m", "", "downscale to a maximum width & height in pixels (<width>x<height>)")
 	flag.StringVarP(&outputDir, "out", "o", "", "output directory (default overwrites original)")
 	flag.BoolVarP(&preserveModTimes, "preserve", "p", true, "preserve file modification times")
 	flag.BoolVarP(&update, "update", "u", false, "update to latest release")
+	flag.BoolVarP(&multiThreaded, "threaded", "t", false, "run multi-threaded (use all CPU cores)")
 	flag.BoolVarP(&showversion, "version", "v", false, "show version number")
 	flag.BoolVarP(&showhelp, "help", "h", false, "show help")
 
@@ -87,15 +91,15 @@ 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)
@@ -137,9 +141,34 @@ func main() {
 		}
 	}
 
-	for _, img := range args {
-		Goptimize(img)
+	if multiThreaded {
+		threads = runtime.NumCPU()
 	}
+
+	processChan := make(chan string)
+
+	wg := &sync.WaitGroup{} // Signal to main goroutine that worker goroutines are working/done working
+	wg.Add(threads)
+
+	for i := 0; i < threads; i++ {
+		go func() {
+			for nextFile := range processChan {
+				Goptimize(nextFile)
+			}
+			// Channel was closed, so we finished this goroutine.
+			wg.Done() // Let main goroutine know we are done.
+		}()
+	}
+
+	for _, img := range args {
+		processChan <- img
+	}
+
+	// Close the channel.  This tells the worker goroutines that they can be done.
+	close(processChan)
+
+	// Wait for all worker goroutines to finish processing the IPs
+	wg.Wait()
 }
 
 // displayDelectedOptimizer prints whether the optimizer was found