Output folder is an option for FolderOutput

lib/book.js

@@ -48,6 +48,10 @@ function Book(opts) {
 
     // If multi-lingual, book can have a parent
     this.parent = opts.parent;
+    if (this.parent) {
+        this.language = path.relative(this.parent.root, this.root);
+        console.log(this.language);
+    }
 
     // A book is linked to an fs, to access its content
     this.fs = opts.fs;
@@ -187,10 +191,7 @@ Book.prototype.parse = function() {
 
                 that.books.push(langBook);
 
-                return langBook.parse()
-                .then(function() {
-                    langBook.config.set('output', path.join(that.config.get('output'), lang.id));
-                });
+                return langBook.parse();
             });
         }
 

lib/cli/helper.js

@@ -4,6 +4,7 @@ var path = require('path');
 var Book = require('../book');
 var NodeFS = require('../fs/node');
 var Logger = require('../utils/logger');
+var Promise = require('../utils/promise');
 var fs = require('../utils/fs');
 var JSONOutput = require('../output/json');
 var WebsiteOutput = require('../output/website');
@@ -54,7 +55,16 @@ function bookCmd(fn) {
 function outputCmd(fn) {
     return bookCmd(function(book, args, kwargs) {
         var Out = FORMATS[kwargs.format];
-        return fn(new Out(book), args);
+        var outputFolder = undefined;
+
+        // Set output folder
+        if (args[0]) {
+            outputFolder = path.resolve(process.cwd(), args[0]);
+        }
+
+        return fn(new Out(book, {
+            root: outputFolder
+        }), args);
     });
 }
 
@@ -69,24 +79,45 @@ function ebookCmd(format) {
         exec: bookCmd(function(book, args, kwargs) {
             return fs.tmpDir()
             .then(function(dir) {
-                var outputFile = path.resolve(process.cwd(), args[1] || 'book.' + format);
+                var ext = '.'+format;
+                var outputFile = path.resolve(process.cwd(), args[1] || ('book' + ext));
                 var output = new EBookOutput(book, {
+                    root: dir,
                     format: format
                 });
 
                 return output.book.parse()
                 .then(function() {
-                    // Set output folder
-                    output.book.config.set('output', dir);
                     return output.generate();
                 })
 
-                // Copy the ebook file
+                // Copy the ebook files
                 .then(function() {
-                    return fs.copy(
-                        path.resolve(dir, 'index.' + format),
-                        outputFile
-                    );
+                    if (output.book.isMultilingual()) {
+                        return Promise.serie(output.book.langs.list(), function(lang) {
+                            var _outputFile = path.join(
+                                path.dirname(outputFile),
+                                path.basename(outputFile, ext) + '_' + lang.id + ext
+                            );
+
+                            return fs.copy(
+                                path.resolve(dir, lang.id, 'index' + ext),
+                                _outputFile
+                            );
+                        })
+                        .thenResolve(output.book.langs.count());
+                    } else {
+                        return fs.copy(
+                            path.resolve(dir, 'index' + ext),
+                            outputFile
+                        ).thenResolve(1);
+                    }
+                })
+                .then(function(n) {
+                    output.book.log.info.ok(n+' file(s) generated');
+
+                    output.book.log.info.ln('cleaning up... ');
+                    return output.book.log.info.promise(fs.rmDir(dir));
                 });
             });
         })

lib/cli/index.js

@@ -64,11 +64,6 @@ module.exports = {
             exec: helper.outputCmd(function(output, args, kwargs) {
                 return output.book.parse()
                 .then(function() {
-                    // Set output folder
-                    if (args[0]) {
-                        output.book.config.set('output', path.resolve(process.cwd(), args[0]));
-                    }
-
                     return output.generate();
                 });
             })

lib/config/index.js

@@ -56,7 +56,6 @@ Config.prototype.load = function() {
             }
         }
 
-        that.options.output = that.options.output || that.book.resolve('_book');
         that.options.plugins = plugins.toList(that.options.plugins);
         that.options.defaultsPlugins = plugins.toList(that.options.defaultsPlugins || '', false);
         that.options.plugins = _.union(that.options.plugins, that.options.defaultsPlugins);

lib/output/ebook.js

@@ -23,6 +23,9 @@ EbookOutput.prototype.name = 'ebook';
 // Finish generation, create ebook using ebook-convert
 EbookOutput.prototype.finish = function() {
     var that = this;
+    if (that.book.isMultilingual()) {
+        return EbookOutput.super_.prototype.finish.apply(that);
+    }
 
     return Promise()
     .then(function() {

lib/output/folder.js

@@ -17,6 +17,8 @@ module.exports = function folderOutput(Base) {
 
     function FolderOutput() {
         Base.apply(this, arguments);
+
+        this.opts.root = path.resolve(this.opts.root || this.book.resolve('_book'));
     }
     util.inherits(FolderOutput, Base);
 
@@ -60,12 +62,20 @@ module.exports = function folderOutput(Base) {
         });
     };
 
+    // Prepare output for a language book
+    FolderOutput.prototype.onLanguageBook = function(book) {
+        return new this.constructor(book, _.extend(this.opts, {
+
+            // Language output should be output in sub-directory of output
+            root: path.resolve(this.root(), book.language)
+        }), this);
+    };
 
     // ----- Utility methods -----
 
     // Return path to the root folder
     FolderOutput.prototype.root = function() {
-        return path.resolve(process.cwd(), this.book.config.get('output'));
+        return this.opts.root;
     };
 
     // Resolve a file in the output directory

lib/plugins/plugin.js

@@ -113,7 +113,7 @@ BookPlugin.prototype.load = function(folder) {
         that.book.config.set(that.getConfigKey(), config);
     });
 
-    this.log.info('loading plugin "' + this.id + '" ...');
+    this.log.info('loading plugin "' + this.id + '"... ');
     return this.log.info.promise(p);
 };