From 55150c49fc13a00944360b803cec2b6598585b54 Mon Sep 17 00:00:00 2001
From: "kuchhal@chromium.org"
 <kuchhal@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>
Date: Thu, 26 Feb 2009 21:27:55 +0000
Subject: Revert "ASCII <-> UTF16 conversion functions.  These are just copies
 of WideToASCII and"

Review URL: http://codereview.chromium.org/28217


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@10512 0039d316-1c4b-4281-b951-d872f2087c98
---
 base/string_util.cc | 32 +++++++-------------------------
 1 file changed, 7 insertions(+), 25 deletions(-)

(limited to 'base/string_util.cc')

diff --git a/base/string_util.cc b/base/string_util.cc
index d84fadb..4ba8c4b 100644
--- a/base/string_util.cc
+++ b/base/string_util.cc
@@ -450,16 +450,6 @@ std::wstring ASCIIToWide(const std::string& ascii) {
   return std::wstring(ascii.begin(), ascii.end());
 }
 
-std::string UTF16ToASCII(const string16& utf16) {
-  DCHECK(IsStringASCII(utf16));
-  return std::string(utf16.begin(), utf16.end());
-}
-
-string16 ASCIIToUTF16(const std::string& ascii) {
-  DCHECK(IsStringASCII(ascii));
-  return string16(ascii.begin(), ascii.end());
-}
-
 // Latin1 is just the low range of Unicode, so we can copy directly to convert.
 bool WideToLatin1(const std::wstring& wide, std::string* latin1) {
   std::string output;
@@ -482,28 +472,20 @@ bool IsString8Bit(const std::wstring& str) {
   return true;
 }
 
-template<class STR>
-static bool DoIsStringASCII(const STR& str) {
+bool IsStringASCII(const std::wstring& str) {
   for (size_t i = 0; i < str.length(); i++) {
-    typename ToUnsigned<typename STR::value_type>::Unsigned c = str[i];
-    if (c > 0x7F)
+    if (str[i] > 0x7F)
       return false;
   }
   return true;
 }
 
-bool IsStringASCII(const std::wstring& str) {
-  return DoIsStringASCII(str);
-}
-
-#if !defined(WCHAR_T_IS_UTF16)
-bool IsStringASCII(const string16& str) {
-  return DoIsStringASCII(str);
-}
-#endif
-
 bool IsStringASCII(const std::string& str) {
-  return DoIsStringASCII(str);
+  for (size_t i = 0; i < str.length(); i++) {
+    if (static_cast<unsigned char>(str[i]) > 0x7F)
+      return false;
+  }
+  return true;
 }
 
 // Helper functions that determine whether the given character begins a
-- 
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