Moved XMPP notifier library from chrome/browser/sync to chrome/common....

chrome/browser/sync/notifier/base/utils.h

-// Copyright (c) 2009 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.
-//
-// Utility functions.
-
-#ifndef CHROME_BROWSER_SYNC_NOTIFIER_BASE_UTILS_H_
-#define CHROME_BROWSER_SYNC_NOTIFIER_BASE_UTILS_H_
-
-#include <map>
-#include <string>
-
-#include "chrome/browser/sync/notifier/base/static_assert.h"
-
-// Return error if the first argument evaluates to false.
-#define RET_IF_FALSE(x) do { if (!(x)) return false; } while (false)
-
-// Protocol constants.
-const char kHttpProto[] = "http://";
-const char kHttpsProto[] = "https://";
-
-// Initialize a POD to zero. Using this function requires discipline. Don't
-// use for types that have a v-table or virtual bases.
-template <typename T>
-inline void SetZero(T& p) {
-  // Guard against the easy mistake of
-  //    foo(int *p) { SetZero(p); } instead of
-  //                  SetZero(*p);
-  // which it should be.
-  STATIC_ASSERT(sizeof(T) != sizeof(void*));
-
-  // A POD (plain old data) object has one of these data types:
-  // a fundamental type, union, struct, array,
-  // or class--with no constructor. PODs don't have virtual functions or
-  // virtual bases.
-
-  // Test to see if the type has constructors.
-  union CtorTest {
-    T t;
-    int i;
-  };
-
-  // TODO(sync) There might be a way to test if the type has virtuals.
-  // For now, if we zero a type with virtuals by mistake, it is going to crash
-  // predictable at run-time when the virtuals are called.
-  memset(&p, 0, sizeof(T));
-}
-
-// Used to delete each element in a vector<T*>/deque<T*> (and then empty the
-// sequence).
-template <class T>
-void CleanupSequence(T* items) {
-  for (typename T::iterator it(items->begin()); it != items->end(); ++it) {
-    delete (*it);
-  }
-  items->clear();
-}
-
-// Typically used to clean up values used in a hash_map that had Type* as
-// values.
-//
-// WARNING: This function assumes that T::clear will not access the values
-// (or the keys if they are the same as the values).  This is true for
-// hash_map.
-template <class T>
-void CleanupMap(T* items) {
-  // This is likely slower than a for loop, but we have to do it this way. In
-  // some of the maps we use, deleting it->second causes it->first to be
-  // deleted as well, and that seems to send the iterator in a tizzy.
-  typename T::iterator it = items->begin();
-  while (it != items->end()) {
-    items->erase(it->first);
-    delete it->second;
-    it = items->begin();
-  }
-}
-
-// Get the value of an element in the map with the specified name.
-template <class T>
-void GetMapElement(const std::map<const std::string, const T>& m,
-                   const char* name,
-                   T* value) {
-  typename std::map<const std::string, const T>::const_iterator iter(
-      m.find(name));
-  if (iter != m.end()) {
-    *value = iter->second;
-  }
-}
-
-#endif  // CHROME_BROWSER_SYNC_NOTIFIER_BASE_UTILS_H_