Implemented File create API.

runtime/bin/file_win.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <fcntl.h>
 #include <io.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/stat.h>
 
@@ skipping 70 matching lines @@
   if (position < 0) {
     // The file is not capable of seeking. Return an error.
     return -1;
   }
   off_t result = lseek(handle_->fd(), 0, SEEK_END);
   lseek(handle_->fd(), position, SEEK_SET);
   return result;
 }
 
 
-File* File::OpenFile(const char* name, bool writable) {
+File* File::Open(const char* name, bool writable) {
   int flags = O_RDONLY | O_BINARY;
   if (writable) {
     flags = (O_RDWR | O_CREAT | O_TRUNC | O_BINARY);
   }
   int fd = open(name, flags, 0666);
   if (fd < 0) {
     return NULL;
   }
   return new File(name, new FileHandle(fd));
 }
 
 
-bool File::FileExists(const char* name) {
+bool File::Exists(const char* name) {
   struct stat st;
   if (stat(name, &st) == 0) {
     return ((st.st_mode & S_IFMT) == S_IFREG);
   } else {
     return false;
   }
 }
 
 
+bool File::Create(const char* name) {
+  int fd = open(name, O_RDONLY | O_CREAT, 0666);
+  if (fd < 0) {
+    return false;
+  }
+  return (close(fd) == 0);
+}
+
+
 bool File::IsAbsolutePath(const char* pathname) {
   // Should we consider network paths?
   if (pathname == NULL) return false;
   return (strlen(pathname) > 2) &&
       (pathname[1] == ':') &&
       (pathname[2] == '\\');
 }
 
 
 char* File::GetCanonicalPath(const char* pathname) {
   int required_size = GetFullPathName(pathname, 0, NULL, NULL);
   char* path = static_cast<char*>(malloc(required_size));
   int written = GetFullPathName(pathname, required_size, path, NULL);
   ASSERT(written == (required_size - 1));
   return path;
 }
 
 
 const char* File::PathSeparator() {
   return "\\";
 }
 
 
 const char* File::StringEscapedPathSeparator() {
   return "\\\\";
 }