Merge pull request #89 from hhzl/node-cli-1

Node command line testing

Author: hhzl

scripts/demo.js

@@ -0,0 +1,125 @@
+// ----------------------------------------------
+// LearnWords2 API usage
+//
+// creation:
+//     LW = new BoxOfQuestions(new LWdb('learnWords'));
+//
+// methods and properties used
+//
+//     LW.db.loadWords(wordlist)
+//     LW.question()
+//     LW.answer()
+//     LW.moveQuestionForward()
+//     LW.moveQuestionBackwards()
+//
+// 
+//
+// Asks one word and then terminates
+// ----------------------------------------------
+
+"use strict";
+var repl = require("repl");
+
+
+
+var LWdb = require('../src/LWdb');
+var BoxOfQuestions = require('../src/BoxOfQuestions');
+
+
+var wordlist = require('../data/wordlist-en-ge.js'); 
+
+
+
+
+
+
+// ----------------------------------------------------------
+// Set up the LW (learnwords) object
+// ----------------------------------------------------------
+
+var LW = new BoxOfQuestions(new LWdb('learnWords'));
+
+if (LW.db.numberOfWords() == 0) {LW.db.loadWords(wordlist)};
+ 
+
+
+
+// ----------------------------------------------------------
+// Clear console and write title
+// ----------------------------------------------------------
+
+console.log('\x1Bc'); 
+
+function printLWHelp(){
+console.log('LearnWords2 Read-Eval-Print-Loop');
+console.log('Commands');
+console.log('   type .qw for (LW.question()).word');
+console.log('   type .qo for LW.question()');
+console.log('   type .a  for LW.answer()');
+console.log('   type .ok for LW.moveQuestionForward()');
+console.log('   type .nok for LW.moveQuestionBackwards()');
+console.log('');
+console.log('JavaScript');
+console.log('   you may also directly evaluate JavaScript expressions such as');
+console.log('   LW.question()                      ');
+console.log('   LW.db.getWord(1)                   ');
+console.log('');
+console.log('Other');
+console.log('   type .help get general help.');
+console.log('   type .lw2help get this text.');
+console.log('   type .exit to terminate.');
+console.log('');
+};
+
+printLWHelp();
+
+
+
+
+// start Read-Eval-Print-Loop server
+
+var replServer = repl.start({prompt: "--> "});
+
+replServer.context.LW = LW;
+
+
+
+replServer.defineCommand('lw2help', {
+  help: 'LearnWords2 commands',
+  action: function(name) {
+    printLWHelp();
+    this.displayPrompt();
+  }
+});
+
+replServer.defineCommand('qw',{help: '(LW.question()).word', action: function() {
+  console.log((LW.question()).word);
+  this.displayPrompt();
+  }
+});
+
+
+replServer.defineCommand('qo',{help: 'LW.question()', action: function() {
+  console.log(LW.question());
+  this.displayPrompt();
+  }
+});
+
+
+
+replServer.defineCommand('a', function() {
+  console.log(LW.answer());
+  this.displayPrompt();
+});
+
+
+replServer.defineCommand('ok', function() {
+  LW.moveQuestionForward();
+  this.displayPrompt();
+});
+
+
+replServer.defineCommand('nok', function() {
+  LW.moveQuestionBackwards();
+  this.displayPrompt();
+});