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Update flags

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This commit is contained in:
Ralph Slooten 2019-08-03 00:37:51 +12:00
parent 3a09a2e666
commit 2af6ad5566
2 changed files with 20 additions and 19 deletions
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12
goptimize.go
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@ -154,7 +154,7 @@ func Goptimize(file string) {
// calculate saved percent // calculate saved percent
savedPercent := 100 - math.Round(float64(dstSize)/float64(srcSize)*100) savedPercent := 100 - math.Round(float64(dstSize)/float64(srcSize)*100)
if dstSize < srcSize { if savedPercent > 0 {
// (over)write the file - not all filesystems support // (over)write the file - not all filesystems support
// cross-filesystem moving so we overwrite the original // cross-filesystem moving so we overwrite the original
out, err := os.Create(dstFile) out, err := os.Create(dstFile)
@ -170,14 +170,14 @@ func Goptimize(file string) {
return return
} }
if !skipPreserveModTimes { if preserveModificationTimes {
// transfer original modification times // transfer original modification times
if err := os.Chtimes(dstFile, atime, mtime); err != nil { if err := os.Chtimes(dstFile, atime, mtime); err != nil {
fmt.Printf("Error setting file timestamp: %v\n", err) fmt.Printf("Error setting file timestamp: %v\n", err)
} }
} }
fmt.Printf("Goptimized %s (%dx%d %s->%s %v%%)\n", dstFile, resultW, resultH, ByteCountSI(srcSize), ByteCountSI(dstSize), savedPercent) fmt.Printf("Goptimized %s (%dx%d %s > %s %v%%)\n", dstFile, resultW, resultH, ByteCountSI(srcSize), ByteCountSI(dstSize), savedPercent)
} else { } 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 // then write a copy of the original file
@ -199,17 +199,17 @@ func Goptimize(file string) {
return return
} }
if !skipPreserveModTimes { if preserveModificationTimes {
// transfer original modification times // transfer original modification times
if err := os.Chtimes(dstFile, atime, mtime); err != nil { if err := os.Chtimes(dstFile, atime, mtime); err != nil {
fmt.Printf("Error setting file timestamp: %v\n", err) fmt.Printf("Error setting file timestamp: %v\n", err)
} }
} }
fmt.Printf("Copied %s (%dx%d %s->%s %v%%)\n", dstFile, srcW, srcH, ByteCountSI(srcSize), ByteCountSI(srcSize), 0) fmt.Printf("Copied %s (%dx%d %s %v%%)\n", dstFile, srcW, srcH, ByteCountSI(srcSize), 0)
} else { } else {
// we didn't actually change anything // we didn't actually change anything
fmt.Printf("Skipped %s (%dx%d %s->%s %v%%)\n", dstFile, srcW, srcH, ByteCountSI(srcSize), ByteCountSI(srcSize), 0) fmt.Printf("Skipped %s (%dx%d %s %v%%)\n", dstFile, srcW, srcH, ByteCountSI(srcSize), 0)
} }
} }

9
main.go
View File

@ -14,7 +14,7 @@ var (
maxWidth int maxWidth int
maxHeight int maxHeight int
outputDir string outputDir string
skipPreserveModTimes bool preserveModificationTimes bool
jpegoptim string jpegoptim string
jpegtran string jpegtran string
optipng string optipng string
@ -25,11 +25,12 @@ var (
func main() { func main() {
// set the default help // set the default help
flag.Usage = func() { flag.Usage = func() {
fmt.Println("Goptimize - Resample optimized images") fmt.Println("Goptimize - downscales and optimizes existing images")
fmt.Printf("\nUsage: %s [options] <images>\n", os.Args[0]) fmt.Printf("\nUsage: %s [options] <images>\n", os.Args[0])
fmt.Println("\nOptions:") fmt.Println("\nOptions:")
flag.PrintDefaults() flag.PrintDefaults()
fmt.Println("\nExamples:") fmt.Println("\nExamples:")
fmt.Printf(" %s image.png\n", os.Args[0])
fmt.Printf(" %s -m 800x800 *.jpg\n", os.Args[0]) fmt.Printf(" %s -m 800x800 *.jpg\n", os.Args[0])
fmt.Printf(" %s -o out/ -q 90 -m 1600x1600 *.jpg\n", os.Args[0]) fmt.Printf(" %s -o out/ -q 90 -m 1600x1600 *.jpg\n", os.Args[0])
@ -46,8 +47,8 @@ func main() {
flag.IntVar(&quality, "q", 75, "Quality - JPEG only") flag.IntVar(&quality, "q", 75, "Quality - JPEG only")
flag.StringVar(&outputDir, "o", "", "Output directory (default overwrites original)") flag.StringVar(&outputDir, "o", "", "Output directory (default overwrites original)")
flag.BoolVar(&skipPreserveModTimes, "n", false, "Do not preserve file modification times") flag.BoolVar(&preserveModificationTimes, "p", true, "Preserve file modification times")
flag.StringVar(&maxSizes, "m", "", "Scale down to a maximum width & height. Format must be <width>x<height>.") flag.StringVar(&maxSizes, "m", "", "Downscale to a maximum width & height in pixels (<width>x<height>)")
// third-party optimizers // third-party optimizers
flag.StringVar(&gifsicle, "gifsicle", "gifsicle", "gifsicle binary") flag.StringVar(&gifsicle, "gifsicle", "gifsicle", "gifsicle binary")