106 lines
3.1 KiB
JavaScript
106 lines
3.1 KiB
JavaScript
"use strict";
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const fs = require("mz/fs");
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const path = require("path");
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const BOOK_TITLE = "Worm";
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const BOOK_AUTHOR = "wildbow";
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const BOOK_ID = "urn:uuid:e7f3532d-8db6-4888-be80-1976166b7059";
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const NCX_FILENAME = "toc.ncx";
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module.exports = function (contentPath, chaptersPath, manifestPath) {
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return getChapters(contentPath, chaptersPath, manifestPath).then(function (chapters) {
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return Promise.all([
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writeOpf(chapters, contentPath),
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writeNcx(chapters, contentPath)
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]);
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});
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};
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function writeOpf(chapters, contentPath) {
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const manifestChapters = chapters.map(function (c) {
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return `<item id="${c.id}" href="${c.href}" media-type="application/xhtml+xml"/>`;
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}).join("\n");
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const spineChapters = chapters.map(function (c) {
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return `<itemref idref="${c.id}"/>`;
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}).join("\n");
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const contents = `<?xml version="1.0"?>
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<package version="2.0" xmlns="http://www.idpf.org/2007/opf" unique-identifier="BookId">
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<metadata xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:opf="http://www.idpf.org/2007/opf">
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<dc:title>${BOOK_TITLE}</dc:title>
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<dc:language>en</dc:language>
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<dc:identifier id="BookId" opf:scheme="UUID">${BOOK_ID}</dc:identifier>
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<dc:creator opf:file-as="${BOOK_AUTHOR}" opf:role="aut">${BOOK_AUTHOR}</dc:creator>
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</metadata>
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<manifest>
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${manifestChapters}
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<item id="ncx" href="${NCX_FILENAME}" media-type="application/x-dtbncx+xml"/>
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</manifest>
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<spine toc="ncx">
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${spineChapters}
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</spine>
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</package>`;
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return fs.writeFile(path.resolve(contentPath, "content.opf"), contents);
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}
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function writeNcx(chapters, contentPath) {
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const navPoints = chapters.map(function (c, i) {
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return `<navPoint class="chapter" id="${c.id}" playOrder="${i + 1}">
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<navLabel><text>${c.title}</text></navLabel>
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<content src="${c.href}"/>
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</navPoint>`;
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}).join("\n");
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const contents = `<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE ncx PUBLIC "-//NISO//DTD ncx 2005-1//EN" "http://www.daisy.org/z3986/2005/ncx-2005-1.dtd">
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<ncx version="2005-1" xml:lang="en" xmlns="http://www.daisy.org/z3986/2005/ncx/">
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<head>
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<meta name="dtb:uid" content="${BOOK_ID}"/>
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<meta name="dtb:depth" content="1"/>
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<meta name="dtb:totalPageCount" content="0"/>
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<meta name="dtb:maxPageNumber" content="0"/>
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</head>
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<docTitle>
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<text>${BOOK_TITLE}</text>
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</docTitle>
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<docAuthor>
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<text>${BOOK_AUTHOR}</text>
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</docAuthor>
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<navMap>
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${navPoints}
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</navMap>
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</ncx>`;
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return fs.writeFile(path.resolve(contentPath, NCX_FILENAME), contents);
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}
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function getChapters(contentPath, chaptersPath, manifestPath) {
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const hrefPrefix = `${path.relative(contentPath, chaptersPath)}/`;
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return fs.readFile(manifestPath, { encoding: "utf-8" }).then(function (manifestContents) {
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const manifestChapters = JSON.parse(manifestContents);
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return fs.readdir(chaptersPath).then(function (filenames) {
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return filenames.filter(function (f) {
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return path.extname(f) === ".xhtml";
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})
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.sort()
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.map(function (f, i) {
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return {
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id: path.basename(f),
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title: manifestChapters[i].title,
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href: `${hrefPrefix}${f}`
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};
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});
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});
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});
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}
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