Implement IsAsciiUpper and IsAsciiLower in base/strings/string_util.h

ui/ozone/platform/caca/caca_event_source.cc

 // Copyright 2014 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 "ui/ozone/platform/caca/caca_event_source.h"
 
 #include <caca.h>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
+#include "base/strings/string_util.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/ozone/platform/caca/caca_window.h"
 
 namespace ui {
 
 namespace {
 
 ui::KeyboardCode GetKeyboardCode(const caca_event_t& event) {
@@ skipping 45 matching lines @@
     ui::VKEY_F6,
     ui::VKEY_F7,
     ui::VKEY_F8,
     ui::VKEY_F9,
     ui::VKEY_F10,
     ui::VKEY_F11,
     ui::VKEY_F12,
   };
 
   int key_code = caca_get_event_key_ch(&event);
-  if (key_code >= 'a' && key_code <= 'z')
+  if (base::IsAsciiLower(key_code))
     return static_cast<ui::KeyboardCode>(key_code - ('a' - 'A'));
   if (key_code >= '0' && key_code <= 'Z')
     return static_cast<ui::KeyboardCode>(key_code);
   if (static_cast<unsigned int>(key_code) < arraysize(kCacaKeyMap))
     return kCacaKeyMap[key_code];
 
   return ui::VKEY_UNKNOWN;
 }
 
 int ModifierFromKey(const caca_event_t& event) {
   int key_code = caca_get_event_key_ch(&event);
-  if (key_code >= 'A' && key_code <= 'Z')
+  if (base::IsAsciiUpper(key_code))
     return ui::EF_SHIFT_DOWN;
   if ((key_code >= CACA_KEY_CTRL_A && key_code <= CACA_KEY_CTRL_G) ||
       (key_code >= CACA_KEY_CTRL_J && key_code <= CACA_KEY_CTRL_L) ||
       (key_code >= CACA_KEY_CTRL_N && key_code <= CACA_KEY_CTRL_R) ||
       (key_code >= CACA_KEY_CTRL_T && key_code <= CACA_KEY_CTRL_Z))
     return ui::EF_CONTROL_DOWN;
 
   return ui::EF_NONE;
 }
 
@@ skipping 124 matching lines @@
       window->OnCacaEvent(&mouse_event);
       break;
     }
     default:
       NOTIMPLEMENTED();
       break;
   }
 }
 
 }  // namespace ui