Add base for ebook generator

1 files changed, 114 insertions, 0 deletions

diff --git a/lib/generators/ebook.js b/lib/generators/ebook.js
new file mode 100644
index 0000000..fa5dcbd
--- /dev/null
+++ b/lib/generators/ebook.js
@@ -0,0 +1,114 @@
+var util = require("util");
+var path = require("path");
+var Q = require("q");
+var _ = require("lodash");
+var exec = require('child_process').exec;
+
+var fs = require("../utils/fs");
+var stringUtils = require("../utils/string");
+var BaseGenerator = require("./website");
+
+var Generator = function(book, format) {
+    BaseGenerator.apply(this, arguments);
+
+    // eBook format
+    this.ebookFormat = format || "pdf";
+
+    // Styles to use
+    this.styles = ["ebook", this.ebookFormat];
+};
+util.inherits(Generator, BaseGenerator);
+
+Generator.prototype.prepareTemplates = function() {
+    this.templates["page"] = this.plugins.template("ebook:page") || path.resolve(this.options.theme, 'templates/ebook/page.html');
+    this.templates["summary"] = this.plugins.template("ebook:summary") || path.resolve(this.options.theme, 'templates/ebook/summary.html');
+    this.templates["glossary"] = this.plugins.template("ebook:glossary") || path.resolve(this.options.theme, 'templates/ebook/glossary.html');
+
+	return Q();
+};
+
+// Generate table of contents
+Generator.prototype.writeSummary = function() {
+    var that = this;
+
+    return this._writeTemplate(this.templates["summary"], {}, path.join(this.options.output, "SUMMARY.html"));
+};
+
+
+Generator.prototype.langsIndex = function(langs) {
+    return Q();
+};
+
+Generator.prototype.finish = function() {
+    var that = this;
+
+    return BaseGenerator.prototype.finish.apply(this)
+    .then(function() {
+    	return that.writeSummary();
+    })
+    .then(function() {
+        var d = Q.defer();
+
+        if (!that.options.cover && fs.existsSync(path.join(that.options.output, "cover.jpg"))) {
+            that.options.cover = path.join(that.options.output, "cover.jpg");
+        }
+
+        var _options = {
+            "--cover": that.options.cover,
+            "--title": that.options.title,
+            "--comments": that.options.description,
+            "--isbn": that.options.isbn,
+            "--authors": that.options.author,
+            "--publisher": "GitBook",
+            "--chapter": "descendant-or-self::*[contains(concat(' ', normalize-space(@class), ' '), ' book-chapter ')]",
+            "--chapter-mark": "pagebreak",
+            "--page-breaks-before": "/",
+            "--level1-toc": "descendant-or-self::*[contains(concat(' ', normalize-space(@class), ' '), ' book-chapter-1 ')]",
+            "--level2-toc": "descendant-or-self::*[contains(concat(' ', normalize-space(@class), ' '), ' book-chapter-2 ')]",
+            "--level3-toc": "descendant-or-self::*[contains(concat(' ', normalize-space(@class), ' '), ' book-chapter-3 ')]",
+            "--no-chapters-in-toc": true,
+            "--max-levels": "1",
+            "--breadth-first": true
+        };
+
+        if (that.ebookFormat == "pdf") {
+            var pdfOptions = that.options.pdf;
+
+            _.extend(_options, {
+                "--margin-left": String(pdfOptions.margin.left),
+                "--margin-right": String(pdfOptions.margin.right),
+                "--margin-top": String(pdfOptions.margin.top),
+                "--margin-bottom": String(pdfOptions.margin.bottom),
+                "--pdf-default-font-size": String(pdfOptions.fontSize),
+                "--pdf-mono-font-size": String(pdfOptions.fontSize),
+                "--paper-size": String(pdfOptions.paperSize),
+                "--pdf-page-numbers": Boolean(pdfOptions.pageNumbers),
+                "--pdf-header-template": String(pdfOptions.headerTemplate),
+                "--pdf-footer-template": String(pdfOptions.footerTemplate)
+            });
+        }
+
+        var command = [
+            "ebook-convert",
+            path.join(that.options.output, "SUMMARY.html"),
+            path.join(that.options.output, "index."+that.ebookFormat),
+            stringUtils.optionsToShellArgs(_options)
+        ].join(" ");
+
+        exec(command, function (error, stdout, stderr) {
+            if (error) {
+                if (error.code == 127) {
+                    error.message = "Need to install ebook-convert from Calibre";
+                } else {
+                    error.message = error.message + " "+stdout;
+                }
+                return d.reject(error);
+            }
+            d.resolve();
+        });
+
+        return d.promise;
+    });
+};
+
+module.exports = Generator;