create epub

go.mod

@@ -3,3 +3,11 @@ module go-comic-converter
 go 1.19
 
 require golang.org/x/image v0.2.0
+
+require (
+	github.com/bmaupin/go-epub v1.0.1 // indirect
+	github.com/gabriel-vasile/mimetype v1.3.1 // indirect
+	github.com/gofrs/uuid v3.1.0+incompatible // indirect
+	github.com/vincent-petithory/dataurl v0.0.0-20191104211930-d1553a71de50 // indirect
+	golang.org/x/net v0.0.0-20220722155237-a158d28d115b // indirect
+)

go.sum

@@ -1,3 +1,11 @@
+github.com/bmaupin/go-epub v1.0.1 h1:LLbczYCXO/1sGpFd4/QRaDiEhevo4PYQxBQClZPRoco=
+github.com/bmaupin/go-epub v1.0.1/go.mod h1:mBan+0WgVv5JbPNw1xfnfQoTRN9iPMKBshZwPOL0SY0=
+github.com/gabriel-vasile/mimetype v1.3.1 h1:qevA6c2MtE1RorlScnixeG0VA1H4xrXyhyX3oWBynNQ=
+github.com/gabriel-vasile/mimetype v1.3.1/go.mod h1:fA8fi6KUiG7MgQQ+mEWotXoEOvmxRtOJlERCzSmRvr8=
+github.com/gofrs/uuid v3.1.0+incompatible h1:q2rtkjaKT4YEr6E1kamy0Ha4RtepWlQBedyHx0uzKwA=
+github.com/gofrs/uuid v3.1.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
+github.com/vincent-petithory/dataurl v0.0.0-20191104211930-d1553a71de50 h1:uxE3GYdXIOfhMv3unJKETJEhw78gvzuQqRX/rVirc2A=
+github.com/vincent-petithory/dataurl v0.0.0-20191104211930-d1553a71de50/go.mod h1:FHafX5vmDzyP+1CQATJn7WFKc9CvnvxyvZy6I1MrG/U=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
@@ -6,11 +14,14 @@ golang.org/x/image v0.2.0/go.mod h1:la7oBXb9w3YFjBqaAwtynVioc1ZvOnNteUNrifGNmAI=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20210505024714-0287a6fb4125/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b h1:PxfKdU9lEEDYjdIzOtC4qFWgkU2rGHdKlKowJSMN9h0=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -18,6 +29,7 @@ golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9sn
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=

internal/comic-converter/core.go

@@ -1,11 +1,13 @@
 package comicconverter
 
 import (
+	"bytes"
 	"image"
 	"image/color"
 	"image/jpeg"
 	"os"
 
+	"github.com/vincent-petithory/dataurl"
 	"golang.org/x/image/draw"
 )
 
@@ -115,6 +117,16 @@ func Resize(img *image.Gray, w, h int) *image.Gray {
 	return newImg
 }
 
+func Get(img *image.Gray, quality int) string {
+	b := bytes.NewBuffer([]byte{})
+	err := jpeg.Encode(b, img, &jpeg.Options{Quality: quality})
+	if err != nil {
+		panic(err)
+	}
+	du := dataurl.EncodeBytes(b.Bytes())
+	return du
+}
+
 func Save(img *image.Gray, output string, quality int) {
 	o, err := os.Create(output)
 	if err != nil {
@@ -131,3 +143,12 @@ func Save(img *image.Gray, output string, quality int) {
 		panic(err)
 	}
 }
+
+func Convert(path string, crop bool, w, h int, quality int) string {
+	img := Load(path)
+	if crop {
+		img = CropMarging(img)
+	}
+	img = Resize(img, w, h)
+	return Get(img, quality)
+}

main.go

@@ -6,8 +6,11 @@ import (
 	"io/fs"
 	"path/filepath"
 	"runtime"
+	"sort"
 	"strings"
 	"sync"
+
+	"github.com/bmaupin/go-epub"
 )
 
 type Todo struct {
@@ -15,7 +18,7 @@ type Todo struct {
 	Output string
 }
 
-func main() {
+func addImages(doc *epub.Epub, imagesPath string) {
 	wg := &sync.WaitGroup{}
 	todos := make(chan Todo, runtime.NumCPU())
 
@@ -56,3 +59,47 @@ func main() {
 
 	wg.Wait()
 }
+
+func getImages(dirname string) []string {
+	images := make([]string, 0)
+	filepath.WalkDir(dirname, func(path string, d fs.DirEntry, err error) error {
+		if d.IsDir() {
+			return nil
+		}
+		ext := filepath.Ext(path)
+		if strings.ToLower(ext) != ".jpg" {
+			return nil
+		}
+		images = append(images, path)
+		return nil
+	})
+	sort.Strings(images)
+	return images
+}
+
+func main() {
+	imagesPath := getImages("/Users/vincent/Downloads/Bleach T01 (Tite KUBO) [eBook officiel 1920]")
+
+	doc := epub.NewEpub("Bleach T01 (Tite KUBO) [eBook officiel 1920]")
+	doc.SetAuthor("Bachelier Vincent")
+
+	for i, imagePath := range imagesPath {
+		fmt.Printf("%04d / %04d\n", i+1, len(imagesPath))
+		name := filepath.Base(imagePath)
+		ext := filepath.Ext(name)
+		title := name[0 : len(name)-len(ext)]
+
+		img := comicconverter.Convert(imagePath, true, 1860, 2480, 75)
+		if i == 0 {
+			doc.SetCover(img, "")
+		} else {
+			imgPath, _ := doc.AddImage(img, name)
+			doc.AddSection(fmt.Sprintf("<img src=\"%s\" />", imgPath), title, fmt.Sprintf("%s.xhtml", title), "../css/cover.css")
+		}
+	}
+
+	if err := doc.Write("/Users/vincent/Downloads/test.epub"); err != nil {
+		panic(err)
+	}
+
+}