initial commit

pkg/epub/open.go

@@ -0,0 +1,53 @@
+package epub
+
+import (
+	"archive/zip"
+)
+
+// Open open a epub file
+func Open(fn string) (*Book, error) {
+	fd, err := zip.OpenReader(fn)
+	if err != nil {
+		return nil, err
+	}
+
+	defer fd.Close()
+
+	bk := Book{fd: fd}
+	mt, err := bk.readBytes("mimetype")
+	if err != nil {
+		return &bk, err
+	}
+
+	bk.Mimetype = string(mt)
+
+	err = bk.readXML("META-INF/container.xml", &bk.Container)
+	if err != nil {
+		return &bk, err
+	}
+
+	err = bk.readXML(bk.Container.Rootfile.Path, &bk.Opf)
+	if err != nil {
+		return &bk, err
+	}
+
+	for _, mf := range bk.Opf.Manifest {
+		if mf.ID == bk.Opf.Spine.Toc {
+			err = bk.readXML(bk.filename(mf.Href), &bk.Ncx)
+			break
+		}
+	}
+
+	for _, ncx := range bk.Ncx.Points {
+		content, err := bk.readBytes(bk.filename(ncx.Content.Src))
+		if err != nil {
+			return &bk, err
+		}
+
+		if err := ncx.Content.String(content); err != nil {
+			return &bk, err
+		}
+	}
+
+	return &bk, nil
+}