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Switch to pflag

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This commit is contained in:
Ralph Slooten 2019-08-24 23:17:55 +12:00
parent 36e9b4c8fa
commit 97fa6c94c5
4 changed files with 36 additions and 18 deletions
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5
CHANGELOG.md
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@ -1,5 +1,10 @@
# Changelog
## [dev]
- Switch to [pflag](https://github.com/spf13/pflag) for better flag management
## [0.0.1]
- Initial release

3
Makefile
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@ -6,7 +6,7 @@ build = echo "\n\nBuilding $(1)-$(2)" && GOOS=$(1) GOARCH=$(2) go build ${LDFLAG
&& bzip2 dist/goptimize_${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
go get github.com/disintegration/imaging golang.org/x/image/bmp golang.org/x/image/tiff github.com/axllent/gitrel github.com/spf13/pflag
go build ${LDFLAGS} -o goptimize
rm -rf /tmp/go-*
@ -16,6 +16,7 @@ clean:
release:
mkdir -p dist
rm -f dist/goptimize_${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)

14
goptimize.go
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@ -116,19 +116,19 @@ func Goptimize(file string) {
if format.String() == "JPEG" {
// run one or the other, running both has no advantage
if jpegtran != "" {
RunOptimiser(tmpFilename, true, jpegtran, "-optimize", "-outfile")
RunOptimizer(tmpFilename, true, jpegtran, "-optimize", "-outfile")
} else if jpegoptim != "" {
RunOptimiser(tmpFilename, false, jpegoptim, "-f", "-s", "-o")
RunOptimizer(tmpFilename, false, jpegoptim, "-f", "-s", "-o")
}
} else if format.String() == "PNG" {
if pngquant != "" {
RunOptimiser(tmpFilename, true, pngquant, "-f", "--output")
RunOptimizer(tmpFilename, true, pngquant, "-f", "--output")
}
if optipng != "" {
RunOptimiser(tmpFilename, true, optipng, "-out")
RunOptimizer(tmpFilename, true, optipng, "-out")
}
} else if format.String() == "GIF" && gifsicle != "" {
RunOptimiser(tmpFilename, true, gifsicle, "-o")
RunOptimizer(tmpFilename, true, gifsicle, "-o")
}
// re-open modified temporary file
@ -215,9 +215,9 @@ func Goptimize(file string) {
}
// RunOptimiser will run the specified command on a copy of the temporary file,
// RunOptimizer will run the specified command on a copy of the temporary file,
// and overwrite it if the output is smaller than the original
func RunOptimiser(src string, outFileArg bool, args ...string) {
func RunOptimizer(src string, outFileArg bool, args ...string) {
// create a new temp file
tmpFile, err := ioutil.TempFile(os.TempDir(), "Goptimized-")

32
main.go
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@ -1,7 +1,6 @@
package main
import (
"flag"
"fmt"
"os"
"os/exec"
@ -9,6 +8,7 @@ import (
"strconv"
"github.com/axllent/gitrel"
"github.com/spf13/pflag"
)
var (
@ -26,11 +26,15 @@ var (
)
func main() {
// set up new flag instance
flag := pflag.NewFlagSet(os.Args[0], pflag.ExitOnError)
// set the default help
flag.Usage = func() {
fmt.Println("Goptimize - downscales and optimizes images")
fmt.Printf("\nUsage: %s [options] <images>\n", os.Args[0])
fmt.Println("\nOptions:")
flag.SortFlags = false
flag.PrintDefaults()
fmt.Println("\nExamples:")
fmt.Printf(" %s image.png\n", os.Args[0])
@ -47,14 +51,15 @@ func main() {
}
var maxSizes string
var update, showversion bool
var update, showversion, showhelp bool
flag.IntVar(&quality, "q", 75, "quality - JPEG only")
flag.StringVar(&outputDir, "o", "", "output directory (default overwrites original)")
flag.BoolVar(&preserveModTimes, "p", true, "preserve file modification times")
flag.StringVar(&maxSizes, "m", "", "downscale to a maximum width & height in pixels (<width>x<height>)")
flag.BoolVar(&update, "u", false, "update to latest release")
flag.BoolVar(&showversion, "v", false, "show version number")
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(&showversion, "version", "v", false, "show version number")
flag.BoolVarP(&showhelp, "help", "h", false, "show help")
// third-party optimizers
flag.StringVar(&gifsicle, "gifsicle", "gifsicle", "gifsicle binary")
@ -63,8 +68,10 @@ func main() {
flag.StringVar(&optipng, "optipng", "optipng", "optipng binary")
flag.StringVar(&pngquant, "pngquant", "pngquant", "pngquant binary")
// parse flags
flag.Parse()
flag.SortFlags = false
// parse args excluding os.Args[0]
flag.Parse(os.Args[1:])
// detect optimizer paths
gifsicle, _ = exec.LookPath(gifsicle)
@ -73,6 +80,11 @@ func main() {
optipng, _ = exec.LookPath(optipng)
pngquant, _ = exec.LookPath(pngquant)
if showhelp {
flag.Usage()
os.Exit(1)
}
if showversion {
fmt.Println(fmt.Sprintf("Version: %s", version))
latest, _, _, err := gitrel.Latest("axllent/goptimize", "goptimize")