[NaCl SDK] Expose Google Drive to nacl_io.

native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.cc

Index: native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.cc
diff --git a/native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.cc b/native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c95d786a8855ae4933a7b9b9679e9675479f1cb6
--- /dev/null
+++ b/native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.cc
@@ -0,0 +1,65 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "fake_ppapi/fake_util.h"
+
+#include <string.h>
+
+#include <algorithm>
+
+#include <ppapi/c/pp_completion_callback.h>
+#include <ppapi/c/pp_errors.h>
+
+#include "gtest/gtest.h"
+
+// Helper function to call the completion callback if it is defined (an
+// asynchronous call), or return the result directly if it isn't (a synchronous
+// call).
+//
+// Use like this:
+//   if (<some error condition>)
+//     return RunCompletionCallback(callback, PP_ERROR_FUBAR);
+//
+//   /* Everything worked OK */
+//   return RunCompletionCallback(callback, PP_OK);
+int32_t RunCompletionCallback(PP_CompletionCallback* callback, int32_t result) {
+  if (callback->func) {
+    PP_RunCompletionCallback(callback, result);
+    return PP_OK_COMPLETIONPENDING;
+  }
+  return result;
+}
+
+bool GetHeaderValue(const std::string& headers,
+                    const std::string& key,
+                    std::string* out_value) {
+  out_value->clear();
+
+  size_t offset = 0;
+  while (offset != std::string::npos) {
+    // Find the next colon; this separates the key from the value.
+    size_t colon = headers.find(':', offset);
+    if (colon == std::string::npos)
+      return false;
+
+    // Find the newline; this separates the value from the next header.
+    size_t newline = headers.find('\n', colon);
+    if (strncasecmp(key.c_str(), &headers.data()[offset], key.size()) != 0) {
+      // Key doesn't match, skip to next header.
+      offset = newline + 1;
+      continue;
+    }
+
+    // Key matches, extract value. First, skip leading spaces.
+    size_t nonspace = headers.find_first_not_of(' ', colon + 1);
+    if (nonspace == std::string::npos)
+      return false;
+
+    out_value->assign(headers, nonspace, newline - nonspace);
+    return true;
+  }
+
+  return false;
+}
+