1 files changed, 50 insertions, 0 deletions
diff --git a/lib/cli/helper.js b/lib/cli/helper.js
new file mode 100644
index 0000000..67bc502
--- /dev/null
+++ b/lib/cli/helper.js
@@ -0,0 +1,50 @@
+var _ = require('lodash');
+
+var Book = require('../book');
+var NodeFS = require('../fs/node');
+var Logger = require('../utils/logger');
+
+var LOG_OPTION = {
+    name: 'log',
+    description: 'Minimum log level to display',
+    values: _.chain(Logger.LEVELS)
+        .keys()
+        .map(function(s) {
+            return s.toLowerCase();
+        })
+        .value(),
+    defaults: 'info'
+};
+
+// Commands which is processing a book
+// the root of the book is the first argument (or current directory)
+function bookCmd(fn) {
+    return function(args, kwargs) {
+
+        var input = args[0] || process.cwd();
+        var book = new Book({
+            fs: new NodeFS(),
+            root: input,
+
+            logLevel: kwargs.log
+        });
+
+        return fn(book, args.slice(1));
+    };
+}
+
+// Commands which is working on a Output instance
+function outputCmd(Out, fn) {
+    return bookCmd(function(book, args) {
+        return fn(new Out(book), args);
+    });
+}
+
+module.exports = {
+    bookCmd: bookCmd,
+    outputCmd: outputCmd,
+
+    options: {
+        log: LOG_OPTION
+    }
+};