add option keepdoublepageifsplitted

internal/converter/converter.go

@@ -119,6 +119,7 @@ func (c *Converter) InitParse() {
 	c.AddBoolParam(&c.Options.AutoContrast, "autocontrast", c.Options.AutoContrast, "Improve contrast automatically")
 	c.AddBoolParam(&c.Options.AutoRotate, "autorotate", c.Options.AutoRotate, "Auto Rotate page when width > height")
 	c.AddBoolParam(&c.Options.AutoSplitDoublePage, "autosplitdoublepage", c.Options.AutoSplitDoublePage, "Auto Split double page when width > height")
+	c.AddBoolParam(&c.Options.KeepDoublePageIfSplitted, "keepdoublepageifsplitted", c.Options.KeepDoublePageIfSplitted, "Keep the double page if splitted")
 	c.AddBoolParam(&c.Options.NoBlankImage, "noblankimage", c.Options.NoBlankImage, "Remove blank image")
 	c.AddBoolParam(&c.Options.Manga, "manga", c.Options.Manga, "Manga mode (right to left)")
 	c.AddBoolParam(&c.Options.HasCover, "hascover", c.Options.HasCover, "Has cover. Indicate if your comic have a cover. The first page will be used as a cover and include after the title.")

internal/converter/options/converter_options.go

@@ -35,6 +35,7 @@ type Options struct {
 	AutoContrast               bool    `yaml:"auto_contrast"`
 	AutoRotate                 bool    `yaml:"auto_rotate"`
 	AutoSplitDoublePage        bool    `yaml:"auto_split_double_page"`
+	KeepDoublePageIfSplitted   bool    `yaml:"keep_double_page_if_splitted"`
 	NoBlankImage               bool    `yaml:"no_blank_image"`
 	Manga                      bool    `yaml:"manga"`
 	HasCover                   bool    `yaml:"has_cover"`
@@ -87,6 +88,7 @@ func New() *Options {
 		CropRatioBottom:          3,
 		NoBlankImage:             true,
 		HasCover:                 true,
+		KeepDoublePageIfSplitted: true,
 		SortPathMode:             1,
 		ForegroundColor:          "000",
 		BackgroundColor:          "FFF",
@@ -208,6 +210,7 @@ func (o *Options) ShowConfig() string {
 		{"AutoContrast", o.AutoContrast, true},
 		{"AutoRotate", o.AutoRotate, true},
 		{"AutoSplitDoublePage", o.AutoSplitDoublePage, true},
+		{"KeepDoublePageIfSplitted", o.KeepDoublePageIfSplitted, o.AutoSplitDoublePage},
 		{"NoBlankImage", o.NoBlankImage, true},
 		{"Manga", o.Manga, true},
 		{"HasCover", o.HasCover, true},

internal/epub/epub.go

@@ -442,7 +442,10 @@ func (e *ePub) Write() error {
 			}
 
 			// Double Page or Last Image that is not a double page
-			if !e.Image.View.PortraitOnly && (img.DoublePage || (img.Part == 0 && img == lastImage)) {
+			if !e.Image.View.PortraitOnly &&
+				(img.DoublePage ||
+					(!e.Image.KeepDoublePageIfSplitted && img.Part == 1) ||
+					(img.Part == 0 && img == lastImage)) {
 				if err := e.writeBlank(wz, img); err != nil {
 					return err
 				}

internal/epub/imageprocessor/epub_image_processor.go

@@ -101,6 +101,14 @@ func (e *EPUBImageProcessor) Load() (images []*epubimage.Image, err error) {
 						Error:               input.Error,
 					}
 
+					// do not keep double page if requested
+					if !img.IsCover &&
+						img.DoublePage &&
+						e.Options.Image.AutoSplitDoublePage &&
+						!e.Options.Image.KeepDoublePageIfSplitted {
+						continue
+					}
+
 					if err = imgStorage.Add(img.EPUBImgPath(), dst, e.Image.Quality); err != nil {
 						bar.Close()
 						fmt.Fprintf(os.Stderr, "error with %s: %s", input.Name, err)

internal/epub/options/epub_options.go

@@ -29,6 +29,7 @@ type Image struct {
 	AutoContrast             bool
 	AutoRotate               bool
 	AutoSplitDoublePage      bool
+	KeepDoublePageIfSplitted bool
 	NoBlankImage             bool
 	Manga                    bool
 	HasCover                 bool

internal/epub/templates/epub_templates_content.go

@@ -174,7 +174,12 @@ func getManifest(o *ContentOptions) []tag {
 
 	lastImage := o.Images[len(o.Images)-1]
 	for _, img := range o.Images {
-		addTag(img, !o.ImageOptions.View.PortraitOnly && (img.DoublePage || (img.Part == 0 && img == lastImage)))
+		addTag(
+			img,
+			!o.ImageOptions.View.PortraitOnly &&
+				(img.DoublePage ||
+					(!o.ImageOptions.KeepDoublePageIfSplitted && img.Part == 1) ||
+					(img.Part == 0 && img == lastImage)))
 	}
 
 	items = append(items, imageTags...)
@@ -212,7 +217,7 @@ func getSpineAuto(o *ContentOptions) []tag {
 		)
 	}
 	for _, img := range o.Images {
-		if img.DoublePage && o.ImageOptions.Manga == isOnTheRight {
+		if (img.DoublePage || img.Part == 1) && o.ImageOptions.Manga == isOnTheRight {
 			spine = append(spine, tag{
 				"itemref",
 				tagAttrs{"idref": img.SpaceKey(), "properties": getSpreadBlank()},

main.go

@@ -121,6 +121,7 @@ $ go install github.com/celogeek/go-comic-converter/v%d@%s
 			AutoContrast:             cmd.Options.AutoContrast,
 			AutoRotate:               cmd.Options.AutoRotate,
 			AutoSplitDoublePage:      cmd.Options.AutoSplitDoublePage,
+			KeepDoublePageIfSplitted: cmd.Options.KeepDoublePageIfSplitted,
 			NoBlankImage:             cmd.Options.NoBlankImage,
 			Manga:                    cmd.Options.Manga,
 			HasCover:                 cmd.Options.HasCover,