Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/platform/mhtml/MHTMLParser.cpp

 /*
  * Copyright (C) 2011 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 120 matching lines @@
     if (mimeParametersIterator != keyValuePairs.end()) {
         ParsedContentType parsedContentType(mimeParametersIterator->value);
         mimeHeader->m_contentType = parsedContentType.mimeType();
         if (!mimeHeader->isMultipart()) {
             mimeHeader->m_charset = parsedContentType.charset().stripWhiteSpace();
         } else {
             mimeHeader->m_multipartType = parsedContentType.parameterValueForName("type");
             mimeHeader->m_endOfPartBoundary = parsedContentType.parameterValueForName("boundary");
             if (mimeHeader->m_endOfPartBoundary.isNull()) {
                 WTF_LOG_ERROR("No boundary found in multipart MIME header.");
-                return 0;
+                return nullptr;
             }
             mimeHeader->m_endOfPartBoundary.insert("--", 0);
             mimeHeader->m_endOfDocumentBoundary = mimeHeader->m_endOfPartBoundary;
             mimeHeader->m_endOfDocumentBoundary.append("--");
         }
     }
 
     mimeParametersIterator = keyValuePairs.find("content-transfer-encoding");
     if (mimeParametersIterator != keyValuePairs.end())
         mimeHeader->m_contentTransferEncoding = parseContentTransferEncoding(mimeParametersIterator->value);
@@ skipping 45 matching lines @@
 PassRefPtr<MHTMLArchive> MHTMLParser::parseArchive()
 {
     RefPtr<MIMEHeader> header = MIMEHeader::parseHeader(&m_lineReader);
     return parseArchiveWithHeader(header.get());
 }
 
 PassRefPtr<MHTMLArchive> MHTMLParser::parseArchiveWithHeader(MIMEHeader* header)
 {
     if (!header) {
         WTF_LOG_ERROR("Failed to parse MHTML part: no header.");
-        return 0;
+        return nullptr;
     }
 
     RefPtr<MHTMLArchive> archive = MHTMLArchive::create();
     if (!header->isMultipart()) {
         // With IE a page with no resource is not multi-part.
         bool endOfArchiveReached = false;
         RefPtr<ArchiveResource> resource = parseNextPart(*header, String(), String(), endOfArchiveReached);
         if (!resource)
-            return 0;
+            return nullptr;
         archive->setMainResource(resource);
         return archive;
     }
 
     // Skip the message content (it's a generic browser specific message).
     skipLinesUntilBoundaryFound(m_lineReader, header->endOfPartBoundary());
 
     bool endOfArchive = false;
     while (!endOfArchive) {
         RefPtr<MIMEHeader> resourceHeader = MIMEHeader::parseHeader(&m_lineReader);
         if (!resourceHeader) {
             WTF_LOG_ERROR("Failed to parse MHTML, invalid MIME header.");
-            return 0;
+            return nullptr;
         }
         if (resourceHeader->contentType() == "multipart/alternative") {
             // Ignore IE nesting which makes little sense (IE seems to nest only some of the frames).
             RefPtr<MHTMLArchive> subframeArchive = parseArchiveWithHeader(resourceHeader.get());
             if (!subframeArchive) {
                 WTF_LOG_ERROR("Failed to parse MHTML subframe.");
-                return 0;
+                return nullptr;
             }
             bool endOfPartReached = skipLinesUntilBoundaryFound(m_lineReader, header->endOfPartBoundary());
             ASSERT_UNUSED(endOfPartReached, endOfPartReached);
             // The top-frame is the first frame found, regardless of the nesting level.
             if (subframeArchive->mainResource())
                 addResourceToArchive(subframeArchive->mainResource(), archive.get());
             archive->addSubframeArchive(subframeArchive);
             continue;
         }
 
         RefPtr<ArchiveResource> resource = parseNextPart(*resourceHeader, header->endOfPartBoundary(), header->endOfDocumentBoundary(), endOfArchive);
         if (!resource) {
             WTF_LOG_ERROR("Failed to parse MHTML part.");
-            return 0;
+            return nullptr;
         }
         addResourceToArchive(resource.get(), archive.get());
     }
 
     return archive.release();
 }
 
 void MHTMLParser::addResourceToArchive(ArchiveResource* resource, MHTMLArchive* archive)
 {
     const AtomicString& mimeType = resource->mimeType();
@@ skipping 22 matching lines @@
     MIMEHeader::Encoding contentTransferEncoding = mimeHeader.contentTransferEncoding();
     if (contentTransferEncoding == MIMEHeader::Unknown)
         contentTransferEncoding = MIMEHeader::Binary;
 
     RefPtr<SharedBuffer> content = SharedBuffer::create();
     const bool checkBoundary = !endOfPartBoundary.isEmpty();
     bool endOfPartReached = false;
     if (contentTransferEncoding == MIMEHeader::Binary) {
         if (!checkBoundary) {
             WTF_LOG_ERROR("Binary contents requires end of part");
-            return 0;
+            return nullptr;
         }
         m_lineReader.setSeparator(endOfPartBoundary.utf8().data());
         Vector<char> part;
         if (!m_lineReader.nextChunk(part)) {
             WTF_LOG_ERROR("Binary contents requires end of part");
-            return 0;
+            return nullptr;
         }
         content->append(part);
         m_lineReader.setSeparator("\r\n");
         Vector<char> nextChars;
         if (m_lineReader.peek(nextChars, 2) != 2) {
             WTF_LOG_ERROR("Invalid seperator.");
-            return 0;
+            return nullptr;
         }
         endOfPartReached = true;
         ASSERT(nextChars.size() == 2);
         endOfArchiveReached = (nextChars[0] == '-' && nextChars[1] == '-');
         if (!endOfArchiveReached) {
             String line = m_lineReader.nextChunkAsUTF8StringWithLatin1Fallback();
             if (!line.isEmpty()) {
                 WTF_LOG_ERROR("No CRLF at end of binary section.");
-                return 0;
+                return nullptr;
             }
         }
     } else {
         String line;
         while (!(line = m_lineReader.nextChunkAsUTF8StringWithLatin1Fallback()).isNull()) {
             endOfArchiveReached = (line == endOfDocumentBoundary);
             if (checkBoundary && (line == endOfPartBoundary || endOfArchiveReached)) {
                 endOfPartReached = true;
                 break;
             }
             // Note that we use line.utf8() and not line.ascii() as ascii turns special characters (such as tab, line-feed...) into '?'.
             content->append(line.utf8().data(), line.length());
             if (contentTransferEncoding == MIMEHeader::QuotedPrintable) {
                 // The line reader removes the \r\n, but we need them for the content in this case as the QuotedPrintable decoder expects CR-LF terminated lines.
                 content->append("\r\n", 2);
             }
         }
     }
     if (!endOfPartReached && checkBoundary) {
         WTF_LOG_ERROR("No bounday found for MHTML part.");
-        return 0;
+        return nullptr;
     }
 
     Vector<char> data;
     switch (contentTransferEncoding) {
     case MIMEHeader::Base64:
         if (!base64Decode(content->data(), content->size(), data)) {
             WTF_LOG_ERROR("Invalid base64 content for MHTML part.");
-            return 0;
+            return nullptr;
         }
         break;
     case MIMEHeader::QuotedPrintable:
         quotedPrintableDecode(content->data(), content->size(), data);
         break;
     case MIMEHeader::EightBit:
     case MIMEHeader::SevenBit:
     case MIMEHeader::Binary:
         data.append(content->data(), content->size());
         break;
     default:
         WTF_LOG_ERROR("Invalid encoding for MHTML part.");
-        return 0;
+        return nullptr;
     }
     RefPtr<SharedBuffer> contentBuffer = SharedBuffer::adoptVector(data);
     // FIXME: the URL in the MIME header could be relative, we should resolve it if it is.
     // The specs mentions 5 ways to resolve a URL: http://tools.ietf.org/html/rfc2557#section-5
     // IE and Firefox (UNMht) seem to generate only absolute URLs.
     KURL location = KURL(KURL(), mimeHeader.contentLocation());
     return ArchiveResource::create(contentBuffer, location, AtomicString(mimeHeader.contentType()), AtomicString(mimeHeader.charset()), String());
 }
 
 size_t MHTMLParser::frameCount() const
@@ skipping 10 matching lines @@
 {
     return m_resources.size();
 }
 
 ArchiveResource* MHTMLParser::subResourceAt(size_t index) const
 {
     return m_resources[index].get();
 }
 
 }