mirror of
https://github.com/axllent/goptimize.git
synced 2024-12-30 05:56:57 -05:00
First commit
This commit is contained in:
Ralph Slooten
parent
8c24d3c7d9
commit
c2a4f94de5
2
.gitignore
vendored
Normal file
2
.gitignore
vendored
Normal file
@ -0,0 +1,2 @@
|
||||
/dist/
|
||||
goptimize
|
||||
24
Makefile
Normal file
24
Makefile
Normal file
@ -0,0 +1,24 @@
|
||||
TAG=`git describe --tags`
|
||||
VERSION ?= `git describe --tags`
|
||||
LDFLAGS=-ldflags "-s -extldflags \"--static\" -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
|
||||
go build ${LDFLAGS} -o goptimize
|
||||
rm -rf /tmp/go-*
|
||||
|
||||
clean:
|
||||
rm -f goptimize
|
||||
|
||||
release:
|
||||
mkdir -p dist
|
||||
rm -f dist/goptimize_${VERSION}_*
|
||||
$(call build,linux,amd64)
|
||||
$(call build,linux,386)
|
||||
$(call build,linux,arm)
|
||||
$(call build,linux,arm64)
|
||||
$(call build,darwin,amd64)
|
||||
$(call build,darwin,386)
|
||||
260
goptimize.go
Normal file
260
goptimize.go
Normal file
@ -0,0 +1,260 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"image/gif"
|
||||
"image/jpeg"
|
||||
"image/png"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"math"
|
||||
"os"
|
||||
"os/exec"
|
||||
"path/filepath"
|
||||
|
||||
"github.com/disintegration/imaging"
|
||||
"golang.org/x/image/bmp"
|
||||
"golang.org/x/image/tiff"
|
||||
)
|
||||
|
||||
// Goptimize downscales and optimizes an existing image
|
||||
func Goptimize(file string) {
|
||||
info, err := os.Stat(file)
|
||||
if err != nil {
|
||||
fmt.Printf("%s doesn't exist\n", file)
|
||||
return
|
||||
}
|
||||
if !info.Mode().IsRegular() {
|
||||
// not a file
|
||||
fmt.Printf("%s is not a file\n", file)
|
||||
return
|
||||
}
|
||||
// open original, rotate if neccesary
|
||||
src, err := imaging.Open(file, imaging.AutoOrientation(true))
|
||||
if err != nil {
|
||||
fmt.Printf("%v (%s)\n", err, file)
|
||||
return
|
||||
}
|
||||
|
||||
format, err := imaging.FormatFromFilename(file)
|
||||
if err != nil {
|
||||
fmt.Printf("Cannot detect format: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
outFilename := filepath.Base(file)
|
||||
outDir := filepath.Dir(file)
|
||||
dstFile := filepath.Join(outDir, outFilename)
|
||||
if outputDir != "" {
|
||||
dstFile = filepath.Join(outputDir, outFilename)
|
||||
}
|
||||
|
||||
// get original image size
|
||||
srcBounds := src.Bounds()
|
||||
srcW := srcBounds.Dx()
|
||||
srcH := srcBounds.Dy()
|
||||
|
||||
// Ensure scaling does not upscale image
|
||||
imgMaxW := maxWidth
|
||||
if imgMaxW == 0 || imgMaxW > srcW {
|
||||
imgMaxW = srcW
|
||||
}
|
||||
imgMaxH := maxHeight
|
||||
if imgMaxH == 0 || imgMaxH > srcH {
|
||||
imgMaxH = srcH
|
||||
}
|
||||
|
||||
resized := imaging.Fit(src, imgMaxW, imgMaxH, imaging.Lanczos)
|
||||
|
||||
dstBounds := resized.Bounds()
|
||||
resultW := dstBounds.Dx()
|
||||
resultH := dstBounds.Dy()
|
||||
|
||||
tmpFile, err := ioutil.TempFile(os.TempDir(), "Goptimized-")
|
||||
if err != nil {
|
||||
fmt.Printf("Cannot create temporary file: %v\n", err)
|
||||
return
|
||||
}
|
||||
defer os.Remove(tmpFile.Name())
|
||||
|
||||
if format.String() == "JPEG" {
|
||||
err = jpeg.Encode(tmpFile, resized, &jpeg.Options{Quality: quality})
|
||||
} else if format.String() == "PNG" {
|
||||
err = png.Encode(tmpFile, resized)
|
||||
} else if format.String() == "GIF" {
|
||||
err = gif.Encode(tmpFile, resized, nil)
|
||||
} else if format.String() == "TIFF" {
|
||||
err = tiff.Encode(tmpFile, resized, nil)
|
||||
} else if format.String() == "BMP" {
|
||||
err = bmp.Encode(tmpFile, resized)
|
||||
} else {
|
||||
fmt.Printf("Cannot Goptimize %s files\n", format.String())
|
||||
return
|
||||
}
|
||||
if err != nil {
|
||||
fmt.Printf("Error saving output file: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
// get the tempoary filename before closing
|
||||
tmpFilename := tmpFile.Name()
|
||||
// close the temp file to release pointers so we can
|
||||
// modify it with system processes
|
||||
tmpFile.Close()
|
||||
|
||||
// optimize
|
||||
if format.String() == "JPEG" {
|
||||
// run one or the other, both don't do anything
|
||||
if jpegtran != "" {
|
||||
RunOptimiser(tmpFilename, true, jpegtran, "-optimize", "-outfile")
|
||||
} else if jpegoptim != "" {
|
||||
RunOptimiser(tmpFilename, false, jpegoptim, "-f", "-s", "-o")
|
||||
}
|
||||
|
||||
} else if format.String() == "PNG" {
|
||||
if pngquant != "" {
|
||||
RunOptimiser(tmpFilename, true, pngquant, "-f", "--output")
|
||||
}
|
||||
if optipng != "" {
|
||||
RunOptimiser(tmpFilename, true, optipng, "-out")
|
||||
}
|
||||
} else if format.String() == "GIF" {
|
||||
if gifsicle != "" {
|
||||
RunOptimiser(tmpFilename, true, gifsicle, "-o")
|
||||
}
|
||||
}
|
||||
|
||||
// re-open potentiall modified temporary file
|
||||
tmpFile, err = os.Open(tmpFilename)
|
||||
if err != nil {
|
||||
fmt.Printf("Error reopening temporary file: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
defer tmpFile.Close()
|
||||
|
||||
// original file stats
|
||||
srcStat, _ := os.Stat(file)
|
||||
srcSize := srcStat.Size()
|
||||
// optimized file stats
|
||||
dstStat, _ := tmpFile.Stat()
|
||||
dstSize := dstStat.Size()
|
||||
|
||||
// transfer the original file permissions to the new file
|
||||
if err = os.Chmod(tmpFile.Name(), srcStat.Mode()); err != nil {
|
||||
fmt.Printf("Error setting file permissions: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
if !skipPreserveModTimes {
|
||||
// transfer original modification times
|
||||
mtime := srcStat.ModTime()
|
||||
atime := mtime // use mtime as we cannot get atime
|
||||
if err := os.Chtimes(tmpFile.Name(), atime, mtime); err != nil {
|
||||
fmt.Printf("Error setting file timestamp: %v\n", err)
|
||||
}
|
||||
}
|
||||
|
||||
savedPercent := 100 - math.Round(float64(dstSize)/float64(srcSize)*100)
|
||||
|
||||
if dstSize < srcSize {
|
||||
// output is smaller
|
||||
if err := os.Rename(tmpFile.Name(), dstFile); err != nil {
|
||||
fmt.Printf("Error renaming file: %v\n", err)
|
||||
return
|
||||
}
|
||||
fmt.Printf("Goptimized %s (%dx%d %s/%s %v%%)\n", dstFile, resultW, resultH, ByteCountSI(dstSize), ByteCountSI(srcSize), savedPercent)
|
||||
} else {
|
||||
if outputDir != "" {
|
||||
// just copy the original
|
||||
if err := os.Rename(file, dstFile); err != nil {
|
||||
fmt.Printf("Error renaming file: %v\n", err)
|
||||
return
|
||||
}
|
||||
}
|
||||
// we didn't actually any scaling optimizing
|
||||
fmt.Printf("Goptimized %s (%dx%d %s/%s %v%%)\n", dstFile, srcW, srcH, ByteCountSI(srcSize), ByteCountSI(srcSize), 0)
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// RunOptimiser will run the specified command on a copy of the original file
|
||||
// and overwrite if the output is smaller than the original
|
||||
func RunOptimiser(src string, outfile bool, args ...string) {
|
||||
// create a new temp file
|
||||
tmpFile, err := ioutil.TempFile(os.TempDir(), "Goptimized-")
|
||||
if err != nil {
|
||||
fmt.Printf("Cannot create temporary file: %v\n", err)
|
||||
return
|
||||
}
|
||||
defer os.Remove(tmpFile.Name())
|
||||
|
||||
source, err := os.Open(src)
|
||||
// s, _ := source.Stat()
|
||||
// log.Printf("%v\n", s.Size())
|
||||
if err != nil {
|
||||
fmt.Printf("Cannot open temporary file: %v\n", err)
|
||||
return
|
||||
}
|
||||
defer source.Close()
|
||||
|
||||
if _, err := io.Copy(tmpFile, source); err != nil {
|
||||
fmt.Printf("Cannot copy source file: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
// add the filename to the args
|
||||
args = append(args, tmpFile.Name())
|
||||
if outfile {
|
||||
// most commands require a second filename to overwrite the original
|
||||
args = append(args, tmpFile.Name())
|
||||
}
|
||||
|
||||
// fmt.Println(args)
|
||||
|
||||
// execute the command
|
||||
cmd := exec.Command(args[0], args[1:]...)
|
||||
err = cmd.Run()
|
||||
// out, err := cmd.Output()
|
||||
if err != nil {
|
||||
// there was an error
|
||||
fmt.Printf("%s: %v\n", args[0], err)
|
||||
return
|
||||
}
|
||||
// fmt.Println(string(out))
|
||||
|
||||
tmpFilename := tmpFile.Name()
|
||||
|
||||
srcStat, _ := source.Stat()
|
||||
srcSize := srcStat.Size()
|
||||
dstStat, _ := os.Stat(tmpFilename)
|
||||
dstSize := dstStat.Size()
|
||||
|
||||
// ensure file pointers are closed before renaming
|
||||
tmpFile.Close()
|
||||
source.Close()
|
||||
|
||||
if dstSize < srcSize {
|
||||
if err := os.Rename(tmpFilename, src); err != nil {
|
||||
fmt.Printf("Error renaming file: %v\n", err)
|
||||
return
|
||||
}
|
||||
// fmt.Println(args[0], "=", srcSize, "to", dstSize, "(wrote to", source.Name(), ")")
|
||||
} else {
|
||||
// fmt.Println(args[0], "!=", srcSize, "to", dstSize)
|
||||
}
|
||||
}
|
||||
|
||||
// ByteCountSI returns a human readable size from int64 bytes
|
||||
func ByteCountSI(b int64) string {
|
||||
const unit = 1000
|
||||
if b < unit {
|
||||
return fmt.Sprintf("%dB", b)
|
||||
}
|
||||
div, exp := int64(unit), 0
|
||||
for n := b / unit; n >= unit; n /= unit {
|
||||
div *= unit
|
||||
exp++
|
||||
}
|
||||
return fmt.Sprintf("%.1f%cB", float64(b)/float64(div), "kMGTPE"[exp])
|
||||
}
|
||||
117
main.go
Normal file
117
main.go
Normal file
@ -0,0 +1,117 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"fmt"
|
||||
"os"
|
||||
"os/exec"
|
||||
"regexp"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
var (
|
||||
quality int
|
||||
maxWidth int
|
||||
maxHeight int
|
||||
outputDir string
|
||||
skipPreserveModTimes bool
|
||||
jpegoptim string
|
||||
jpegtran string
|
||||
optipng string
|
||||
pngquant string
|
||||
gifsicle string
|
||||
)
|
||||
|
||||
func main() {
|
||||
// modify the default help
|
||||
flag.Usage = func() {
|
||||
fmt.Println("Re-save & resample images, with optional optimization.")
|
||||
fmt.Printf("\nUsage: %s [options] <images>\n", os.Args[0])
|
||||
fmt.Println("\nOptions:")
|
||||
flag.PrintDefaults()
|
||||
fmt.Println("\nExamples:")
|
||||
fmt.Printf(" %s -s 800x800 *.jpg\n", os.Args[0])
|
||||
fmt.Printf(" %s -o out/ -q 90 -s 1600x1600 *.jpg\n", os.Args[0])
|
||||
|
||||
fmt.Println("\nOtimizers:")
|
||||
if err := displayDelectedOptimizer("jpegtran ", jpegtran); err != nil {
|
||||
displayDelectedOptimizer("jpegoptim", jpegoptim)
|
||||
}
|
||||
displayDelectedOptimizer("optipng ", optipng)
|
||||
displayDelectedOptimizer("pngquant ", pngquant)
|
||||
displayDelectedOptimizer("gifsicle ", gifsicle)
|
||||
}
|
||||
|
||||
var maxSizes string
|
||||
|
||||
flag.IntVar(&quality, "q", 75, "Quality - affects jpeg only")
|
||||
flag.StringVar(&outputDir, "o", "", "Output directory (default overwrites original)")
|
||||
flag.BoolVar(&skipPreserveModTimes, "n", false, "Do not preserve file modification times")
|
||||
flag.StringVar(&maxSizes, "m", "", "Scale down to a maximum width & height. Format must be <width>x<height>.")
|
||||
|
||||
// third-party optimizers
|
||||
flag.StringVar(&gifsicle, "gifsicle", "gifsicle", "Alternative gifsicle name")
|
||||
flag.StringVar(&jpegoptim, "jpegoptim", "jpegoptim", "Alternative jpegoptim name")
|
||||
flag.StringVar(&jpegtran, "jpegtran", "jpegtran", "Alternative jpegtran name")
|
||||
flag.StringVar(&optipng, "optipng", "optipng", "Alternative optipng name")
|
||||
flag.StringVar(&pngquant, "pngquant", "pngquant", "Alternative pngquant name")
|
||||
|
||||
// parse flags
|
||||
flag.Parse()
|
||||
|
||||
// detect optimizer paths
|
||||
gifsicle, _ = exec.LookPath(gifsicle)
|
||||
jpegoptim, _ = exec.LookPath(jpegoptim)
|
||||
jpegtran, _ = exec.LookPath(jpegtran)
|
||||
optipng, _ = exec.LookPath(optipng)
|
||||
pngquant, _ = exec.LookPath(pngquant)
|
||||
|
||||
if len(flag.Args()) < 1 {
|
||||
flag.Usage()
|
||||
return
|
||||
}
|
||||
|
||||
if maxSizes != "" {
|
||||
// calculate max sizes from arg[0]
|
||||
r := regexp.MustCompile(`^(\d+)(x|X|\*|:)(\d+)$`)
|
||||
matches := r.FindStringSubmatch(maxSizes)
|
||||
|
||||
if len(matches) != 4 {
|
||||
flag.Usage()
|
||||
return
|
||||
}
|
||||
|
||||
maxWidth, _ = strconv.Atoi(matches[1])
|
||||
maxHeight, _ = strconv.Atoi(matches[3])
|
||||
}
|
||||
|
||||
// parse arguments
|
||||
args := flag.Args()
|
||||
|
||||
if outputDir != "" {
|
||||
// ensure the output directory exists
|
||||
if _, err := os.Stat(outputDir); os.IsNotExist(err) {
|
||||
err := os.MkdirAll(outputDir, os.ModePerm)
|
||||
if err != nil {
|
||||
fmt.Printf("Cannot create output directory: %s\n", outputDir)
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for _, img := range args {
|
||||
Goptimize(img)
|
||||
}
|
||||
}
|
||||
|
||||
// displayDelectedOptimizer prints whether the optimizer was found
|
||||
func displayDelectedOptimizer(name, bin string) error {
|
||||
exe, err := exec.LookPath(bin)
|
||||
if err != nil {
|
||||
// fmt.Printf(" - %s: [undetected]\n", name)
|
||||
return err
|
||||
}
|
||||
|
||||
fmt.Printf(" - %s: %s\n", name, exe)
|
||||
return nil
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user