More installer refactoring in the interest of fixing some bugs and cleaning t...

chrome/installer/util/channel_info.cc

 // Copyright (c) 2010 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 "chrome/installer/util/channel_info.h"
 
 #include "base/logging.h"
 #include "base/win/registry.h"
 #include "chrome/installer/util/google_update_constants.h"
 
@@ skipping 135 matching lines @@
     }
     if (tmp_value.empty()) {
       channel_name->erase();
       return true;
     }
   }
 
   return false;
 }
 
+bool ChannelInfo::EqualsBaseOf(const ChannelInfo& other) const {
+  std::wstring::size_type this_base_end;
+  std::wstring::size_type other_base_end;
+
+  if (!FindModifier(MOD_MULTI_INSTALL, value_, &this_base_end))
+    this_base_end = FindInsertionPoint(MOD_MULTI_INSTALL, value_);
+  if (!FindModifier(MOD_MULTI_INSTALL, other.value_, &other_base_end))
+    other_base_end = FindInsertionPoint(MOD_MULTI_INSTALL, other.value_);
+  return value_.compare(0, this_base_end,
+                        other.value_.c_str(), other_base_end) == 0;
+}
+
 bool ChannelInfo::IsCeee() const {
   return HasModifier(MOD_CEEE, value_);
 }
 
 bool ChannelInfo::SetCeee(bool value) {
   return SetModifier(MOD_CEEE, value, &value_);
 }
 
 bool ChannelInfo::IsChrome() const {
   return HasModifier(MOD_CHROME, value_);
@@ skipping 37 matching lines @@
 
 bool ChannelInfo::HasMultiFailSuffix() const {
   return HasModifier(SFX_MULTI_FAIL, value_);
 }
 
 bool ChannelInfo::SetMultiFailSuffix(bool value) {
   return SetModifier(SFX_MULTI_FAIL, value, &value_);
 }
 
 }  // namespace installer