Merge 120850 - Regression(r116408): Ctrl-A (select all) on large text file hangs the tab with high …

Source/WebCore/platform/win/ClipboardUtilitiesWin.cpp

 /*
  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 17 matching lines @@
 
 #include "DocumentFragment.h"
 #include "KURL.h"
 #include "TextEncoding.h"
 #include "markup.h"
 #include <shlobj.h>
 #include <shlwapi.h>
 #include <wininet.h> // for INTERNET_MAX_URL_LENGTH
 #include <wtf/StringExtras.h>
 #include <wtf/text/CString.h>
+#include <wtf/text/StringBuilder.h>
 #include <wtf/text/WTFString.h>
 
 #if USE(CF)
 #include <CoreFoundation/CoreFoundation.h>
 #include <wtf/RetainPtr.h>
 #endif
 
 namespace WebCore {
 
 #if USE(CF)
@@ skipping 244 matching lines @@
 
     #undef MAX_DIGITS
     #undef MAKE_NUMBER_FORMAT_1
     #undef MAKE_NUMBER_FORMAT_2
     #undef NUMBER_FORMAT
 }
 
 void replaceNewlinesWithWindowsStyleNewlines(String& str)
 {
     DEFINE_STATIC_LOCAL(String, windowsNewline, ("\r\n"));
-    const static unsigned windowsNewlineLength = windowsNewline.length();
-
-    unsigned index = 0;
-    unsigned strLength = str.length();
-    while (index < strLength) {
-        if (str[index] != '\n' || (index > 0 && str[index - 1] == '\r')) {
-            ++index;
-            continue;
-        }
-        str.replace(index, 1, windowsNewline);
-        strLength = str.length();
-        index += windowsNewlineLength;
+    StringBuilder result;
+    for (unsigned index = 0; index < str.length(); ++index) {
+        if (str[index] != '\n' || (index > 0 && str[index - 1] == '\r'))
+            result.append(str[index]);
+        else
+            result.append(windowsNewline);
     }
+    str = result.toString();
 }
 
 void replaceNBSPWithSpace(String& str)
 {
     static const UChar NonBreakingSpaceCharacter = 0xA0;
     static const UChar SpaceCharacter = ' ';
     str.replace(NonBreakingSpaceCharacter, SpaceCharacter);
 }
 
 FORMATETC* urlWFormat()
@@ skipping 511 matching lines @@
 void setClipboardData(IDataObject* dataObject, UINT format, const Vector<String>& dataStrings)
 {
     const ClipboardFormatMap& formatMap = getClipboardMap();
     ClipboardFormatMap::const_iterator found = formatMap.find(format);
     if (found == formatMap.end())
         return;
     found->second->setString(dataObject, found->second->format, dataStrings);
 }
 
 } // namespace WebCore