add blockingFileRead to tide me over until I can get a proper file interface.

2009-03-05 18:17:36 +01:00 · 2009-03-05 18:17:36 +01:00 · 16ef5029de
--- a/node.cc
+++ b/node.cc
@ -57,6 +57,8 @@ ReadFile (const string& name)
  return result;
 }

+
+
 static void
 ParseOptions (int argc, char* argv[], map<string, string>& options, string* file)
 {
@ -121,6 +123,17 @@ LogCallback (const Arguments& args)
  return Undefined();
 }

+static Handle<Value>
+BlockingFileReadCallback (const Arguments& args)
+{
+  if (args.Length() < 1) return v8::Undefined();
+  HandleScope scope;
+
+  String::Utf8Value filename(args[0]);
+
+  return ReadFile (*filename);
+}
+
 static void
 OnFatalError (const char* location, const char* message)
 {
@ -153,6 +166,10 @@ main (int argc, char *argv[])
  Local<Object> g = Context::GetCurrent()->Global();
  g->Set( String::New("log"), FunctionTemplate::New(LogCallback)->GetFunction());

+  g->Set( String::New("blockingFileRead")
+        , FunctionTemplate::New(BlockingFileReadCallback)->GetFunction()
+        );
+
  Init_timer(g);
  Init_tcp(g);
  Init_http(g);
--- a/spec/index.html
+++ b/spec/index.html
@ -3,6 +3,8 @@
 <head>
  <title>Node API</title>
  <link href="specification.css" rel=stylesheet>
+  <!-- <link href="http://www.whatwg.org/style/specification"
+  rel=stylesheet> -->

 <body class=draft>
  <div class=head>
@ -52,6 +54,8 @@
    </ul>
   <li><a href="index.html#tcp_client"><span class=secno>3 </span>TCP Client</a>
   <li><a href="index.html#timers"><span class=secno>4 </span>Timers</a>
+   <li><a href="index.html#blocking"><span class=secno>5 </span>Blocking
+   Functions</a>
  </ul>
  <!--end-toc-->

@ -241,3 +245,26 @@ will be made.
    </dd>

  </dl>
+
+  <h2 id=blocking><span class=secno>5 </span>Blocking Functions</h2>
+
+  <p>Node includes a number of blocking functions in its API. Some of these 
+  will be removed in the future as the software improves. 
+
+  <dl>
+    <dt><code>log(string)</code></dt>
+    <dd>
+      <p>This function outputs the string to the stadard output device
+      (usually the console).
+      Its speed is dependent on where stdout is piped to. 
+    </dd>
+
+  
+    <dt><code>blockingFileRead(filename)</code></dt>
+    <dd>
+    <p>This method opens a file from the file system and reads returns 
+    its contents. This function can be extremely expensive depending on the
+    response time of the file system.  It should only be used in start up.
+    </dd>
+
+  </dl>