1 files changed, 28 insertions, 4 deletions
diff --git a/lib/generate/config.js b/lib/generate/config.js
index 7ec0741..fb232a6 100644
--- a/lib/generate/config.js
+++ b/lib/generate/config.js
@@ -1,3 +1,4 @@
+var Q = require('q');
 var _ = require('lodash');
 var path = require('path');
 
@@ -16,9 +17,10 @@ var CONFIG = {
     // Configuration file to use
     "configFile": "book",
 
-    // Book title and description (defaults are extracted from the README)
+    // Book metadats (somes are extracted from the README by default)
     "title": null,
     "description": null,
+    "isbn": null,
 
     // For ebook format, the extension to use for generation (default is detected from output extension)
     // "epub", "pdf", "mobi"
@@ -96,10 +98,32 @@ var CONFIG = {
     }
 };
 
+// Return complete configuration
+var defaultsConfig = function(options) {
+    return _.merge(options || {}, CONFIG, _.defaults);
+};
+
+// Read configuration from book.json
+var readConfig = function(options) {
+    options = defaultsConfig(options);
+
+    return Q()
+    .then(function() {
+        try {
+            var _config = require(path.resolve(options.input, options.configFile));
+            options = _.merge(options, _.omit(_config, 'input', 'configFile', 'defaultsPlugins', 'generator'));
+        }
+        catch(err) {
+            // No config file: not a big deal
+            return Q();
+        }
+    })
+    .thenResolve(options);
+};
+
 module.exports = {
     CONFIG: CONFIG,
-    defaults: function(options) {
-        return _.merge(options || {}, CONFIG, _.defaults);
-    }
+    defaults: defaultsConfig,
+    read: readConfig
 }