add File.stat File.exists File.strerror

src/file.cc

@@ -76,6 +76,7 @@ public:
   static Handle<Value> Read (const Arguments& args);
   static int AfterRead (eio_req *req);
 
+
 private:
   bool HasUtf8Encoding (void);
   Persistent<Object> handle_;
@@ -90,6 +91,8 @@ public:
 
   static Handle<Value> Stat (const Arguments& args);
   static int AfterStat (eio_req *req);
+
+  static Handle<Value> StrError (const Arguments& args);
 };
 
 Handle<Value>
@@ -184,6 +187,21 @@ FileSystem::AfterStat (eio_req *req)
   return 0;
 }
 
+Handle<Value>
+FileSystem::StrError (const Arguments& args)
+{
+  if (args.Length() < 1) return v8::Undefined();
+  if (!args[0]->IsNumber()) return v8::Undefined();
+
+  HandleScope scope;
+
+  int errorno = args[0]->IntegerValue();
+
+  Local<String> message = String::New(strerror(errorno));
+
+  return scope.Close(message);
+}
+
 ///////////////////// FILE ///////////////////// 
 
 File::File (Handle<Object> handle)
@@ -483,6 +501,7 @@ NodeInit_file (Handle<Object> target)
   // file system methods
   JS_SET_METHOD(fs, "_ffi_rename", FileSystem::Rename);
   JS_SET_METHOD(fs, "_ffi_stat", FileSystem::Stat);
+  JS_SET_METHOD(fs, "strerror", FileSystem::StrError);
   fs->Set(String::NewSymbol("STDIN_FILENO"), Integer::New(STDIN_FILENO));
   fs->Set(String::NewSymbol("STDOUT_FILENO"), Integer::New(STDOUT_FILENO));
   fs->Set(String::NewSymbol("STDERR_FILENO"), Integer::New(STDERR_FILENO));

src/file.js

@@ -2,6 +2,16 @@ File.rename = function (file1, file2, callback) {
   this._addAction("rename", [file1, file2], callback);
 };
 
+File.stat = function (path, callback) {
+  this._addAction("stat", [path], callback);
+};
+
+File.exists = function (path, callback) {
+  this._addAction("stat", [path], function (status) {
+      callback(status == 0);
+  });
+}
+
 File.prototype.puts = function (data, callback) {
   this.write(data + "\n", callback);
 };

test/cat.js

@@ -0,0 +1,21 @@
+var filename = ARGV[2];
+
+function cat (file) {
+  file.read(100, function (status, data) {
+    if (status == 0 && data) {
+      stdout.write(data.encodeUtf8());
+      cat(file);
+    } else {
+      file.close();
+    }
+  });
+}
+
+var f = new File;
+f.open(filename, "r", function (status) {
+  puts("open!");
+  if (status == 0)
+    cat(f);
+  else
+    puts("error?");
+})

test/stats.js

@@ -0,0 +1,14 @@
+File.stat(ARGV[2], function (status, stats) {
+    if (status == 0) {
+      for (var i in stats) {
+        puts(i + " : " + stats[i]);
+      }
+    } else { 
+      puts("error: " + File.strerror(status));
+    }
+});
+
+
+File.exists(ARGV[2], function (r) {
+  puts("file exists: " + r);
+});