tools: fix regression in doctool

101dd1e introduced a regression in the doctool. This commit reverts
the changes that were made to the function signature of the various
doctool functions while maintaining support for passing in specific
node versions.

Refs: https://github.com/nodejs/node/commit/101dd1e

PR-URL: https://github.com/nodejs/node/pull/6680
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Robert Lindstaedt <robert.lindstaedt@gmail.com>

tools/doc/generate.js

@@ -24,6 +24,8 @@ args.forEach(function(arg) {
   }
 });
 
+nodeVersion = nodeVersion || process.version;
+
 if (!inputFile) {
   throw new Error('No input file specified');
 }
@@ -46,15 +48,11 @@ function next(er, input) {
       break;
 
     case 'html':
-      require('./html.js')({
-        input: input,
-        filename: inputFile,
-        template: template,
-        nodeVersion: nodeVersion,
-      }, function(er, html) {
-        if (er) throw er;
-        console.log(html);
-      });
+      require('./html.js')(input, inputFile, template, nodeVersion,
+        function(er, html) {
+          if (er) throw er;
+          console.log(html);
+        });
       break;
 
     default:

tools/doc/html.js

@@ -30,11 +30,12 @@ var gtocPath = path.resolve(path.join(
 var gtocLoading = null;
 var gtocData = null;
 
-/**
- * opts: input, filename, template, nodeVersion.
- */
-function toHTML(opts, cb) {
-  var template = opts.template;
+function toHTML(input, filename, template, nodeVersion, cb) {
+  if (typeof nodeVersion === 'function') {
+    cb = nodeVersion;
+    nodeVersion = null;
+  }
+  nodeVersion = nodeVersion || process.version;
 
   if (gtocData) {
     return onGtocLoaded();
@@ -56,15 +57,10 @@ function toHTML(opts, cb) {
   }
 
   function onGtocLoaded() {
-    var lexed = marked.lexer(opts.input);
+    var lexed = marked.lexer(input);
     fs.readFile(template, 'utf8', function(er, template) {
       if (er) return cb(er);
-      render({
-        lexed: lexed,
-        filename: opts.filename,
-        template: template,
-        nodeVersion: opts.nodeVersion,
-      }, cb);
+      render(lexed, filename, template, nodeVersion, cb);
     });
   }
 }
@@ -91,13 +87,13 @@ function toID(filename) {
     .replace(/-+/g, '-');
 }
 
-/**
- * opts: lexed, filename, template, nodeVersion.
- */
-function render(opts, cb) {
-  var lexed = opts.lexed;
-  var filename = opts.filename;
-  var template = opts.template;
+function render(lexed, filename, template, nodeVersion, cb) {
+  if (typeof nodeVersion === 'function') {
+    cb = nodeVersion;
+    nodeVersion = null;
+  }
+
+  nodeVersion = nodeVersion || process.version;
 
   // get the section
   var section = getSection(lexed);
@@ -117,7 +113,7 @@ function render(opts, cb) {
     template = template.replace(/__ID__/g, id);
     template = template.replace(/__FILENAME__/g, filename);
     template = template.replace(/__SECTION__/g, section);
-    template = template.replace(/__VERSION__/g, opts.nodeVersion);
+    template = template.replace(/__VERSION__/g, nodeVersion);
     template = template.replace(/__TOC__/g, toc);
     template = template.replace(
       /__GTOC__/g,