Improve error handling.

Better support for spawn errors encountered during generation (for ex,
PDFs through wkhtml) + general refactoring.

src/core/error-handler.js

@@ -0,0 +1,93 @@
+/**
+@module error-handler.js
+*/
+
+(function() {
+
+  var HACKMYSTATUS = require('./status-codes')
+    , PKG = require('../../package.json')
+    , title = ('\n*** HackMyResume v' + PKG.version + ' ***').bold.white;
+
+  var ErrorHandler = module.exports = {
+
+
+    err: function( ex, shouldExit ) {
+      var msg = '', exitCode;
+
+      if( ex.fluenterror ){
+        switch( ex.fluenterror ) { // TODO: Remove magic numbers
+
+          case HACKMYSTATUS.themeNotFound:
+            msg = "The specified theme couldn't be found: " + ex.data;
+            break;
+
+          case HACKMYSTATUS.copyCSS:
+            msg = "Couldn't copy CSS file to destination folder";
+            break;
+
+          case HACKMYSTATUS.resumeNotFound:
+            msg = 'Please '.guide + 'specify a valid input resume'.guide.bold +
+              ' in FRESH or JSON Resume format.'.guide;
+            break;
+
+          case HACKMYSTATUS.missingCommand:
+            msg = title + "\nPlease ".guide + "specify a command".guide.bold + " (".guide +
+            Object.keys( FCMD.verbs ).map( function(v, idx, ar) {
+              return (idx === ar.length - 1 ? 'or '.guide : '') +
+                v.toUpperCase().guide;
+            }).join(', '.guide) + ").\n\n".guide +
+              FS.readFileSync( PATH.join(__dirname, 'use.txt'), 'utf8' ).info.bold;
+            break;
+
+          case HACKMYSTATUS.invalidCommand:
+            msg = 'Please '.guide + 'specify the output resume file'.guide.bold +
+              ' that should be created.'.guide;
+            break;
+
+          case HACKMYSTATUS.resumeNotFoundAlt:
+            msg = 'Please '.guide + 'specify a valid input resume'.guide.bold +
+              ' in either FRESH or JSON Resume format.'.guide;
+            break;
+
+          case HACKMYSTATUS.inputOutputParity:
+            msg = 'Please '.guide + 'specify an output file name'.guide.bold +
+              ' for every input file you wish to convert.'.guide;
+            break;
+
+          case HACKMYSTATUS.createNameMissing:
+            msg = 'Please '.guide + 'specify the filename of the resume'.guide.bold +
+              ' to create.'.guide;
+            break;
+
+          case HACKMYSTATUS.wkhtmltopdf:
+            msg = 'ERROR: PDF generation failed. '.red.bold + ('Make sure wkhtmltopdf is ' +
+            'installed and accessible from your path.').red;
+            break;
+
+        }
+        exitCode = ex.fluenterror;
+
+      }
+      else {
+        msg = ex.toString();
+        exitCode = 4;
+      }
+
+      var idx = msg.indexOf('Error: ');
+      var trimmed = idx === -1 ? msg : msg.substring( idx + 7 );
+      if( !ex.fluenterror || ex.fluenterror < 3 ) { // TODO: magic #s
+        console.log( ('ERROR: ' + trimmed.toString()).red.bold );
+        console.log( ex.stack.gray);
+      }
+      else {
+        console.log( trimmed.toString() );
+      }
+
+      if( shouldExit )
+        process.exit( exitCode );
+
+    }
+
+  };
+
+}());

src/core/spawn-watch.js

@@ -0,0 +1,22 @@
+/**
+@module spawn-watch.js
+*/
+
+(function() {
+
+// Catch various out-of-band child process errors such as ENOENT for PDFs
+// http://stackoverflow.com/q/27688804
+var SpawnWatcher = module.exports = function() {
+  var childProcess = require("child_process");
+  var oldSpawn = childProcess.spawn;
+  childProcess.spawn = function() {
+    return oldSpawn.apply(this, arguments)
+      .on('error', function(err) {
+        require('./error-handler').err( err, false );
+      });
+  };
+}();
+
+//SpawnWatcher();
+
+}());