create epub like kcc

go.mod

@@ -2,12 +2,15 @@ module go-comic-converter
 
 go 1.19
 
-require golang.org/x/image v0.2.0
+require (
+	github.com/bmaupin/go-epub v1.0.1
+	github.com/vincent-petithory/dataurl v0.0.0-20191104211930-d1553a71de50
+	golang.org/x/image v0.2.0
+	golang.org/x/mod v0.7.0
+)
 
 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

@@ -11,7 +11,10 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/image v0.2.0 h1:/DcQ0w3VHKCC5p0/P2B0JpAZ9Z++V2KOo2fyU89CXBQ=
 golang.org/x/image v0.2.0/go.mod h1:la7oBXb9w3YFjBqaAwtynVioc1ZvOnNteUNrifGNmAI=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.7.0 h1:LapD9S96VoQRhi/GrNTqeBJFrUjs5UHCAtTlgwA5oZA=
+golang.org/x/mod v0.7.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 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=

internal/epub/core.go

@@ -0,0 +1,176 @@
+package epub
+
+import (
+	"archive/zip"
+	"fmt"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"text/template"
+	"time"
+
+	"github.com/gofrs/uuid"
+)
+
+type Images struct {
+	Id     int
+	Path   string
+	Name   string
+	Title  string
+	Data   []byte
+	Width  int
+	Height int
+}
+
+type EPub struct {
+	Path string
+
+	UID        string
+	Title      string
+	Author     string
+	Publisher  string
+	UpdatedAt  string
+	ViewWidth  int
+	ViewHeight int
+	Quality    int
+
+	Images []Images
+	Error  error
+}
+
+func NewEpub(path string) *EPub {
+	uid, err := uuid.NewV4()
+	if err != nil {
+		panic(err)
+	}
+	return &EPub{
+		Path: path,
+
+		UID:        uid.String(),
+		Title:      "Unknown title",
+		Author:     "Unknown author",
+		Publisher:  "GO Comic Converter",
+		UpdatedAt:  time.Now().UTC().Format("2006-01-02T15:04:05Z"),
+		ViewWidth:  0,
+		ViewHeight: 0,
+		Quality:    75,
+
+		Images: make([]Images, 0),
+	}
+}
+
+func (e *EPub) SetTitle(title string) *EPub {
+	e.Title = title
+	return e
+}
+
+func (e *EPub) SetAuthor(author string) *EPub {
+	e.Author = author
+	return e
+}
+
+func (e *EPub) SetSize(w, h int) *EPub {
+	e.ViewWidth = w
+	e.ViewHeight = h
+	return e
+}
+
+func (e *EPub) SetQuality(q int) *EPub {
+	e.Quality = q
+	return e
+}
+
+func (e *EPub) WriteFile(wz *zip.Writer, file, content string) error {
+	m, err := wz.Create(file)
+	if err != nil {
+		return err
+	}
+	_, err = m.Write([]byte(content))
+	return err
+}
+
+func (e *EPub) Render(templateString string, data any) string {
+	tmpl := template.New("parser")
+	tmpl.Funcs(template.FuncMap{"mod": func(i, j int) bool { return i%j == 0 }})
+	tmpl.Funcs(template.FuncMap{"zoom": func(s int, z float32) int { return int(float32(s) * z) }})
+	tmpl, err := tmpl.Parse(templateString)
+	if err != nil {
+		panic(err)
+	}
+	result := &strings.Builder{}
+	if err := tmpl.Execute(result, data); err != nil {
+		panic(err)
+	}
+	return result.String()
+}
+
+func (e *EPub) LoadDir(dirname string) *EPub {
+	err := filepath.WalkDir(dirname, func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if d.IsDir() {
+			return nil
+		}
+		ext := filepath.Ext(path)
+		if strings.ToLower(ext) != ".jpg" {
+			return nil
+		}
+		name := filepath.Base(path)
+		title := name[0 : len(name)-len(ext)]
+
+		e.Images = append(e.Images, Images{
+			Path:  path,
+			Name:  name,
+			Title: title,
+		})
+		return nil
+	})
+	if err != nil {
+		e.Error = err
+		return e
+	}
+	sort.SliceStable(e.Images, func(i, j int) bool {
+		return strings.Compare(e.Images[i].Path, e.Images[j].Path) < 0
+	})
+
+	for i := range e.Images {
+		e.Images[i].Id = i
+	}
+
+	return e
+}
+
+func (e *EPub) Write() error {
+	if e.Error != nil {
+		return e.Error
+	}
+	w, err := os.Create(e.Path)
+	if err != nil {
+		return err
+	}
+
+	zipContent := [][]string{
+		{"mimetype", TEMPLATE_MIME_TYPE},
+		{"META-INF/container.xml", TEMPLATE_CONTAINER},
+		{"OEBPS/content.opf", e.Render(TEMPLATE_CONTENT, e)},
+		{"OEBPS/toc.ncx", e.Render(TEMPLATE_TOC, e)},
+		{"OEBPS/nav.xhtml", e.Render(TEMPLATE_NAV, e)},
+		{"OEBPS/Text/style.css", TEMPLATE_STYLE},
+	}
+	for _, img := range e.Images {
+		filename := fmt.Sprintf("OEBPS/Text/%d.xhtml", img.Id)
+		zipContent = append(zipContent, []string{filename, e.Render(TEMPLATE_TEXT, img)})
+	}
+
+	wz := zip.NewWriter(w)
+	defer wz.Close()
+	for _, content := range zipContent {
+		if err := e.WriteFile(wz, content[0], content[1]); err != nil {
+			return err
+		}
+	}
+	return nil
+}

internal/epub/templates.go

@@ -0,0 +1,24 @@
+package epub
+
+import _ "embed"
+
+//go:embed "templates/mimetype.tmpl"
+var TEMPLATE_MIME_TYPE string
+
+//go:embed "templates/container.xml.tmpl"
+var TEMPLATE_CONTAINER string
+
+//go:embed "templates/content.opf.tmpl"
+var TEMPLATE_CONTENT string
+
+//go:embed "templates/toc.ncx.tmpl"
+var TEMPLATE_TOC string
+
+//go:embed "templates/nav.xhtml.tmpl"
+var TEMPLATE_NAV string
+
+//go:embed "templates/style.css.tmpl"
+var TEMPLATE_STYLE string
+
+//go:embed "templates/text.xhtml.tmpl"
+var TEMPLATE_TEXT string

internal/epub/templates/container.xml.tmpl

@@ -0,0 +1,6 @@
+<?xml version="1.0"?>
+<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
+<rootfiles>
+<rootfile full-path="OEBPS/content.opf" media-type="application/oebps-package+xml"/>
+</rootfiles>
+</container>

internal/epub/templates/content.opf.tmpl

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<package version="3.0" unique-identifier="BookID" xmlns="http://www.idpf.org/2007/opf">
+<metadata xmlns:opf="http://www.idpf.org/2007/opf" xmlns:dc="http://purl.org/dc/elements/1.1/">
+<dc:title>{{ .Title }}</dc:title>
+<dc:language>en-US</dc:language>
+<dc:identifier id="BookID">urn:uuid:{{ .UID }}</dc:identifier>
+<dc:contributor id="contributor">GO Comic Converter</dc:contributor>
+<dc:creator>GO Comic Converter</dc:creator>
+<meta property="dcterms:modified">{{ .UpdatedAt }}</meta>
+<meta name="cover" content="cover"/>
+<meta name="fixed-layout" content="true"/>
+<meta name="original-resolution" content="{{ .ViewWidth }}x{{ .ViewHeight }}"/>
+<meta name="book-type" content="comic"/>
+<meta name="primary-writing-mode" content="horizontal-lr"/>
+<meta name="zero-gutter" content="true"/>
+<meta name="zero-margin" content="true"/>
+<meta name="ke-border-color" content="#FFFFFF"/>
+<meta name="ke-border-width" content="0"/>
+<meta name="orientation-lock" content="portrait"/>
+<meta name="region-mag" content="true"/>
+</metadata>
+<manifest>
+<item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml"/>
+<item id="nav" href="nav.xhtml" properties="nav" media-type="application/xhtml+xml"/>
+{{ range .Images }}
+{{ if eq .Id 0 }}
+<item id="cover" href="Images/{{ .Id }}.jpg" media-type="image/jpeg" properties="cover-image"/>
+{{ end }}
+<item id="page_{{ .Id }}" href="Text/{{ .Id }}.xhtml" media-type="application/xhtml+xml"/>
+<item id="img_{{ .Id }}" href="Images/{{ .Id }}.jpg" media-type="image/jpeg"/>
+{{ end }}
+</manifest>
+<spine page-progression-direction="ltr" toc="ncx">
+{{ range .Images }}
+{{ if mod .Id 2 }}
+<itemref idref="page_{{ .Id }} " linear="yes" properties="page-spread-left"/>
+{{ else }}
+<itemref idref="page_{{ .Id }}" linear="yes" properties="page-spread-right"/>
+{{ end }}
+{{ end }}
+</spine>
+</package>

internal/epub/templates/mimetype.tmpl

@@ -0,0 +1 @@
+application/epub+zip

internal/epub/templates/nav.xhtml.tmpl

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
+<head>
+<title>{{ .Title }}</title>
+<meta charset="utf-8"/>
+</head>
+<body>
+<nav xmlns:epub="http://www.idpf.org/2007/ops" epub:type="toc" id="toc">
+<ol>
+<li><a href="Text/0.xhtml">{{ .Title }}</a></li>
+</ol>
+</nav>
+<nav epub:type="page-list">
+<ol>
+<li><a href="Text/0.xhtml">{{ .Title }}</a></li>
+</ol>
+</nav>
+</body>
+</html>

internal/epub/templates/style.css.tmpl

@@ -0,0 +1,72 @@
+@page {
+margin: 0;
+}
+body {
+display: block;
+margin: 0;
+padding: 0;
+}
+#PV {
+position: absolute;
+width: 100%;
+height: 100%;
+top: 0;
+left: 0;
+}
+#PV-T {
+top: 0;
+width: 100%;
+height: 50%;
+}
+#PV-B {
+bottom: 0;
+width: 100%;
+height: 50%;
+}
+#PV-L {
+left: 0;
+width: 49.5%;
+height: 100%;
+float: left;
+}
+#PV-R {
+right: 0;
+width: 49.5%;
+height: 100%;
+float: right;
+}
+#PV-TL {
+top: 0;
+left: 0;
+width: 49.5%;
+height: 50%;
+float: left;
+}
+#PV-TR {
+top: 0;
+right: 0;
+width: 49.5%;
+height: 50%;
+float: right;
+}
+#PV-BL {
+bottom: 0;
+left: 0;
+width: 49.5%;
+height: 50%;
+float: left;
+}
+#PV-BR {
+bottom: 0;
+right: 0;
+width: 49.5%;
+height: 50%;
+float: right;
+}
+.PV-P {
+width: 100%;
+height: 100%;
+top: 0;
+position: absolute;
+display: none;
+}

internal/epub/templates/text.xhtml.tmpl

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
+<head>
+<title>{{ .Title }}</title>
+<link href="style.css" type="text/css" rel="stylesheet"/>
+<meta name="viewport" content="width={{ .Width }}, height={{ .Height }}"/>
+</head>
+<body style="">
+<div style="text-align:center;top:0.0%;">
+<img width="{{ .Width }}" height="{{ .Height }}" src="../Images/{{ .Id }}.jpg"/>
+</div>
+<div id="PV">
+<div id="PV-TL">
+<a style="display:inline-block;width:100%;height:100%;" class="app-amzn-magnify" data-app-amzn-magnify='{"targetId":"PV-TL-P", "ordinal":1}'></a>
+</div>
+<div id="PV-TR">
+<a style="display:inline-block;width:100%;height:100%;" class="app-amzn-magnify" data-app-amzn-magnify='{"targetId":"PV-TR-P", "ordinal":2}'></a>
+</div>
+<div id="PV-BL">
+<a style="display:inline-block;width:100%;height:100%;" class="app-amzn-magnify" data-app-amzn-magnify='{"targetId":"PV-BL-P", "ordinal":3}'></a>
+</div>
+<div id="PV-BR">
+<a style="display:inline-block;width:100%;height:100%;" class="app-amzn-magnify" data-app-amzn-magnify='{"targetId":"PV-BR-P", "ordinal":4}'></a>
+</div>
+</div>
+<div class="PV-P" id="PV-TL-P" style="">
+<img style="position:absolute;left:0;top:0;" src="../Images/{{ .Id }}.jpg" width="{{ zoom .Width 1.5 }}" height="{{ zoom .Height 1.5 }}"/>
+</div>
+<div class="PV-P" id="PV-TR-P" style="">
+<img style="position:absolute;right:0;top:0;" src="../Images/{{ .Id }}.jpg" width="{{ zoom .Width 1.5 }}" height="{{ zoom .Height 1.5 }}"/>
+</div>
+<div class="PV-P" id="PV-BL-P" style="">
+<img style="position:absolute;left:0;bottom:0;" src="../Images/{{ .Id }}.jpg" width="{{ zoom .Width 1.5 }}" height="{{ zoom .Height 1.5 }}"/>
+</div>
+<div class="PV-P" id="PV-BR-P" style="">
+<img style="position:absolute;right:0;bottom:0;" src="../Images/{{ .Id }}.jpg" width="{{ zoom .Width 1.5 }}" height="{{ zoom .Height 1.5 }}"/>
+</div>
+</body>
+</html>

internal/epub/templates/toc.ncx.tmpl

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ncx version="2005-1" xml:lang="en-US" xmlns="http://www.daisy.org/z3986/2005/ncx/">
+<head>
+<meta name="dtb:uid" content="urn:uuid:{{ .UID }}"/>
+<meta name="dtb:depth" content="1"/>
+<meta name="dtb:totalPageCount" content="0"/>
+<meta name="dtb:maxPageNumber" content="0"/>
+<meta name="generated" content="true"/>
+</head>
+<docTitle><text>{{ .Title }}</text></docTitle>
+<navMap>
+<navPoint id="Text"><navLabel><text>{{ .Title }}</text></navLabel><content src="Text/0.xhtml"/></navPoint>
+</navMap>
+</ncx>

main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"go-comic-converter/internal/epub"
 	imageconverter "go-comic-converter/internal/image-converter"
 	"io/fs"
 	"path/filepath"
@@ -10,7 +11,7 @@ import (
 	"strings"
 	"sync"
 
-	"github.com/bmaupin/go-epub"
+	epub2 "github.com/bmaupin/go-epub"
 )
 
 type File struct {
@@ -21,7 +22,7 @@ type File struct {
 	InternalPath string
 }
 
-func addImages(doc *epub.Epub, imagesPath []string) {
+func addImages(doc *epub2.Epub, imagesPath []string) {
 	wg := &sync.WaitGroup{}
 	todos := make(chan string, runtime.NumCPU())
 	imageResult := make(chan *File)
@@ -95,10 +96,10 @@ func getImages(dirname string) []string {
 	return images
 }
 
-func main() {
+func main2() {
 	imagesPath := getImages("/Users/vincent/Downloads/Bleach T01 (Tite KUBO) [eBook officiel 1920]")
 
-	doc := epub.NewEpub("Bleach T01 (Tite KUBO) [eBook officiel 1920]")
+	doc := epub2.NewEpub("Bleach T01 (Tite KUBO) [eBook officiel 1920]")
 	doc.SetAuthor("Bachelier Vincent")
 
 	addImages(doc, imagesPath)
@@ -108,3 +109,17 @@ func main() {
 	}
 
 }
+
+func main() {
+	err := epub.NewEpub("/Users/vincent/Downloads/test.epub").
+		SetSize(1860, 2480).
+		SetQuality(75).
+		SetTitle("Bleach T01 (Tite KUBO) [eBook officiel 1920]").
+		SetAuthor("Bachelier Vincent").
+		LoadDir("/Users/vincent/Downloads/Bleach T01 (Tite KUBO) [eBook officiel 1920]").
+		Write()
+
+	if err != nil {
+		panic(err)
+	}
+}