Add string16 support for LowerCaseEqualsASCII, StartsWith, and EndsWith....

base/string_util.h

 // Copyright (c) 2006-2008 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.
 //
 // This file defines utility functions for working with strings.
 
 #ifndef BASE_STRING_UTIL_H_
 #define BASE_STRING_UTIL_H_
 
 #include <stdarg.h>   // va_list
@@ skipping 233 matching lines @@
   StringToUpperASCII(&output);
   return output;
 }
 
 // Compare the lower-case form of the given string against the given ASCII
 // string.  This is useful for doing checking if an input string matches some
 // token, and it is optimized to avoid intermediate string copies.  This API is
 // borrowed from the equivalent APIs in Mozilla.
 bool LowerCaseEqualsASCII(const std::string& a, const char* b);
 bool LowerCaseEqualsASCII(const std::wstring& a, const char* b);
+bool LowerCaseEqualsASCII(const string16& a, const char* b);
 
 // Same thing, but with string iterators instead.
 bool LowerCaseEqualsASCII(std::string::const_iterator a_begin,
                           std::string::const_iterator a_end,
                           const char* b);
 bool LowerCaseEqualsASCII(std::wstring::const_iterator a_begin,
                           std::wstring::const_iterator a_end,
                           const char* b);
+bool LowerCaseEqualsASCII(string16::const_iterator a_begin,
+                          string16::const_iterator a_end,
+                          const char* b);
 bool LowerCaseEqualsASCII(const char* a_begin,
                           const char* a_end,
                           const char* b);
 bool LowerCaseEqualsASCII(const wchar_t* a_begin,
                           const wchar_t* a_end,
                           const char* b);
+bool LowerCaseEqualsASCII(const char16* a_begin,
+                          const char16* a_end,
+                          const char* b);
 
 // Performs a case-sensitive string compare. The behavior is undefined if both
 // strings are not ASCII.
 bool EqualsASCII(const string16& a, const base::StringPiece& b);
 
 // Returns true if str starts with search, or false otherwise.
 bool StartsWithASCII(const std::string& str,
                      const std::string& search,
                      bool case_sensitive);
 bool StartsWith(const std::wstring& str,
                 const std::wstring& search,
                 bool case_sensitive);
+bool StartsWith(const string16& str,
+                const string16& search,
+                bool case_sensitive);
 
 // Returns true if str ends with search, or false otherwise.
 bool EndsWith(const std::wstring& str,
               const std::wstring& search,
               bool case_sensitive);
+bool EndsWith(const string16& str,
+              const string16& search,
+              bool case_sensitive);
 
 
 // Determines the type of ASCII character, independent of locale (the C
 // library versions will change based on locale).
 template <typename Char>
 inline bool IsAsciiWhitespace(Char c) {
   return c == ' ' || c == '\r' || c == '\n' || c == '\t';
 }
 template <typename Char>
 inline bool IsAsciiAlpha(Char c) {
@@ skipping 165 matching lines @@
   return &((*str)[0]);
 }
 
 //-----------------------------------------------------------------------------
 
 // Function objects to aid in comparing/searching strings.
 
 template<typename Char> struct CaseInsensitiveCompare {
  public:
   bool operator()(Char x, Char y) const {
+    // TODO(darin): Do we really want to do locale sensitive comparisons here?
+    // See http://crbug.com/24917
     return tolower(x) == tolower(y);
   }
 };
 
 template<typename Char> struct CaseInsensitiveCompareASCII {
  public:
   bool operator()(Char x, Char y) const {
     return ToLowerASCII(x) == ToLowerASCII(y);
   }
 };
@@ skipping 101 matching lines @@
 #elif defined(WCHAR_T_IS_UTF32)
   typedef uint32 Unsigned;
 #endif
 };
 template<>
 struct ToUnsigned<short> {
   typedef unsigned short Unsigned;
 };
 
 #endif  // BASE_STRING_UTIL_H_