celogeek/go-comic-converter
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improve err and help

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This commit is contained in:
Celogeek 2022-12-30 15:08:18 +01:00
parent 8be50a99a6
commit 14f4ab2b81
Signed by: celogeek
GPG Key ID: E6B7BDCFC446233A
2 changed files with 13 additions and 9 deletions
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6
internal/epub/image_processing.go
View File

@ -136,7 +136,7 @@ func loadDir(input string) (int, chan *imageTask, error) {
return nil return nil
}) })
if err != nil { if err != nil {
fmt.Println(err) fmt.Fprintln(os.Stderr, err)
os.Exit(1) os.Exit(1)
} }
if len(images) == 0 { if len(images) == 0 {
@ -151,7 +151,7 @@ func loadDir(input string) (int, chan *imageTask, error) {
for i, img := range images { for i, img := range images {
f, err := os.Open(img) f, err := os.Open(img)
if err != nil { if err != nil {
fmt.Println(err) fmt.Fprintln(os.Stderr, err)
os.Exit(1) os.Exit(1)
} }
output <- &imageTask{ output <- &imageTask{
@ -194,7 +194,7 @@ func loadCbz(input string) (int, chan *imageTask, error) {
for i, img := range images { for i, img := range images {
f, err := img.Open() f, err := img.Open()
if err != nil { if err != nil {
fmt.Println(err) fmt.Fprintln(os.Stderr, err)
os.Exit(1) os.Exit(1)
} }
output <- &imageTask{ output <- &imageTask{

16
main.go
View File

@ -124,10 +124,14 @@ func main() {
flag.IntVar(&opt.Quality, "quality", 85, "Quality of the image") flag.IntVar(&opt.Quality, "quality", 85, "Quality of the image")
flag.BoolVar(&opt.NoCrop, "nocrop", false, "Disable cropping") flag.BoolVar(&opt.NoCrop, "nocrop", false, "Disable cropping")
flag.IntVar(&opt.LimitMb, "limitmb", 0, "Limit size of the ePub: Default nolimit (0), Minimum 20") flag.IntVar(&opt.LimitMb, "limitmb", 0, "Limit size of the ePub: Default nolimit (0), Minimum 20")
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage of %s:\n", filepath.Base(os.Args[0]))
flag.PrintDefaults()
}
flag.Parse() flag.Parse()
if opt.Input == "" { if opt.Input == "" {
fmt.Println("Missing input or output!") fmt.Fprintln(os.Stderr, "Missing input or output!")
flag.Usage() flag.Usage()
os.Exit(1) os.Exit(1)
} }
@ -135,7 +139,7 @@ func main() {
if opt.Output == "" { if opt.Output == "" {
fi, err := os.Stat(opt.Input) fi, err := os.Stat(opt.Input)
if err != nil { if err != nil {
fmt.Println(err) fmt.Fprintln(os.Stderr, err)
flag.Usage() flag.Usage()
os.Exit(1) os.Exit(1)
} }
@ -149,14 +153,14 @@ func main() {
profileIdx, profileMatch := ProfilesIdx[opt.Profile] profileIdx, profileMatch := ProfilesIdx[opt.Profile]
if !profileMatch { if !profileMatch {
fmt.Println("Profile doesn't exists!") fmt.Fprintln(os.Stderr, "Profile doesn't exists!")
flag.Usage() flag.Usage()
os.Exit(1) os.Exit(1)
} }
profile := Profiles[profileIdx] profile := Profiles[profileIdx]
if opt.LimitMb > 0 && opt.LimitMb < 20 { if opt.LimitMb > 0 && opt.LimitMb < 20 {
fmt.Println("LimitMb should be 0 or >= 20") fmt.Fprintln(os.Stderr, "LimitMb should be 0 or >= 20")
flag.Usage() flag.Usage()
os.Exit(1) os.Exit(1)
} }
@ -165,7 +169,7 @@ func main() {
opt.Title = filepath.Base(opt.Input) opt.Title = filepath.Base(opt.Input)
} }
fmt.Println(opt) fmt.Fprintln(os.Stderr, opt)
if err := epub.NewEpub(&epub.EpubOptions{ if err := epub.NewEpub(&epub.EpubOptions{
Input: opt.Input, Input: opt.Input,
@ -180,7 +184,7 @@ func main() {
Crop: !opt.NoCrop, Crop: !opt.NoCrop,
}, },
}).Write(); err != nil { }).Write(); err != nil {
fmt.Printf("Error: %v\n", err) fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1) os.Exit(1)
} }