mangayomi-mirror/epubx/example/dart_ex/bin/main.dart

import 'dart:io' as io;

import 'package:path/path.dart' as path;
import 'package:epubx/epubx.dart';

main(List<String> args) async {
  //Get the epub into memory somehow
  String fileName = "alicesAdventuresUnderGround.epub";
  String fullPath = path.join(io.Directory.current.path, fileName);
  var targetFile = new io.File(fullPath);
  List<int> bytes = await targetFile.readAsBytes();

// Opens a book and reads all of its content into the memory
  EpubBook epubBook = await EpubReader.readBook(bytes);

// COMMON PROPERTIES

// Book's title
  String? title = epubBook.Title;

// Book's authors (comma separated list)
  String? author = epubBook.Author;

// Book's authors (list of authors names)
  List<String?>? authors = epubBook.AuthorList;

// Book's cover image (null if there is no cover)
  Image? coverImage = epubBook.CoverImage;

// CHAPTERS

// Enumerating chapters
  epubBook.Chapters!.forEach((EpubChapter chapter) {
    // Title of chapter
    String chapterTitle = chapter.Title!;

    // HTML content of current chapter
    String chapterHtmlContent = chapter.HtmlContent!;

    // Nested chapters
    List<EpubChapter> subChapters = chapter.SubChapters!;
  });

// CONTENT

// Book's content (HTML files, stlylesheets, images, fonts, etc.)
  EpubContent bookContent = epubBook.Content!;

// IMAGES

// All images in the book (file name is the key)
  Map<String, EpubByteContentFile> images = bookContent.Images!;

  EpubByteContentFile? firstImage =
      images.isNotEmpty ? images.values.first : null;

// Content type (e.g. EpubContentType.IMAGE_JPEG, EpubContentType.IMAGE_PNG)
  EpubContentType contentType = firstImage!.ContentType!;

// MIME type (e.g. "image/jpeg", "image/png")
  String mimeContentType = firstImage.ContentMimeType!;

// HTML & CSS

// All XHTML files in the book (file name is the key)
  Map<String?, EpubTextContentFile> htmlFiles = bookContent.Html!;

// All CSS files in the book (file name is the key)
  Map<String, EpubTextContentFile> cssFiles = bookContent.Css!;

// Entire HTML content of the book
  htmlFiles.values.forEach((EpubTextContentFile htmlFile) {
    String htmlContent = htmlFile.Content!;
  });

// All CSS content in the book
  cssFiles.values.forEach((EpubTextContentFile cssFile) {
    String cssContent = cssFile.Content!;
  });

// OTHER CONTENT

// All fonts in the book (file name is the key)
  Map<String, EpubByteContentFile> fonts = bookContent.Fonts!;

// All files in the book (including HTML, CSS, images, fonts, and other types of files)
  Map<String, EpubContentFile> allFiles = bookContent.AllFiles!;

// ACCESSING RAW SCHEMA INFORMATION

// EPUB OPF data
  EpubPackage package = epubBook.Schema!.Package!;

// Enumerating book's contributors
  package.Metadata!.Contributors!.forEach((contributor) {
    String contributorName = contributor.Contributor!;
    String contributorRole = contributor.Role!;
  });

// EPUB NCX data
  EpubNavigation navigation = epubBook.Schema!.Navigation!;

// Enumerating NCX metadata
  navigation.Head!.Metadata!.forEach((meta) {
    String metadataItemName = meta.Name!;
    String metadataItemContent = meta.Content!;
  });

  // Write the Book
  var written = EpubWriter.writeBook(epubBook);
  // Read the book into a new object!
  var newBook = await EpubReader.readBook(written!);
}