Bug 487949 - Land HTML5 parser on trunk preffed off r=mrbkap, sr=jonas

2009-06-29 00:44:22 +02:00
parent 498ab4420a
commit 2f19c38b3b
123 changed files with 55066 additions and 250 deletions
--- a/parser/html/nsHtml5MetaScannerCppSupplement.h
+++ b/parser/html/nsHtml5MetaScannerCppSupplement.h
@@ -0,0 +1,137 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is HTML Parser C++ Translator code.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2009
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Henri Sivonen <hsivonen@iki.fi>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+ 
+#include "nsICharsetConverterManager.h"
+#include "nsServiceManagerUtils.h"
+#include "nsICharsetAlias.h"
+#include "nsEncoderDecoderUtils.h"
+#include "nsTraceRefcnt.h"
+
+static NS_DEFINE_CID(kCharsetAliasCID, NS_CHARSETALIAS_CID);
+
+nsHtml5MetaScanner::nsHtml5MetaScanner()
+ : readable(nsnull),
+   metaState(NS_HTML5META_SCANNER_NO),
+   contentIndex(-1),
+   charsetIndex(-1),
+   stateSave(NS_HTML5META_SCANNER_DATA),
+   strBufLen(0),
+   strBuf(jArray<PRUnichar,PRInt32>(36))
+{
+  MOZ_COUNT_CTOR(nsHtml5MetaScanner);
+}
+
+nsHtml5MetaScanner::~nsHtml5MetaScanner()
+{
+  MOZ_COUNT_DTOR(nsHtml5MetaScanner);
+  strBuf.release();
+}
+
+void
+nsHtml5MetaScanner::sniff(nsHtml5ByteReadable* bytes, nsIUnicodeDecoder** decoder, nsACString& charset)
+{
+  readable = bytes;
+  stateLoop(stateSave);
+  readable = nsnull;
+  if (mUnicodeDecoder) {
+    mUnicodeDecoder.forget(decoder);
+    charset.Assign(mCharset);
+  }
+}
+
+PRBool
+nsHtml5MetaScanner::tryCharset(nsString* charset)
+{
+  nsresult res = NS_OK;
+  nsCOMPtr<nsICharsetConverterManager> convManager = do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &res);
+  if (NS_FAILED(res)) {
+    NS_ERROR("Could not get CharsetConverterManager service.");
+    return PR_FALSE;
+  }
+  nsCAutoString encoding;
+  CopyUTF16toUTF8(*charset, encoding);
+  // XXX spec says only UTF-16
+  if (encoding.LowerCaseEqualsASCII("utf-16") ||
+      encoding.LowerCaseEqualsASCII("utf-16be") ||
+      encoding.LowerCaseEqualsASCII("utf-16le") ||
+      encoding.LowerCaseEqualsASCII("utf-32") ||
+      encoding.LowerCaseEqualsASCII("utf-32be") ||
+      encoding.LowerCaseEqualsASCII("utf-32le")) {
+    mCharset.Assign("utf-8");
+    res = convManager->GetUnicodeDecoderRaw(mCharset.get(), getter_AddRefs(mUnicodeDecoder));
+    if (NS_FAILED(res)) {
+      NS_ERROR("Could not get decoder for UTF-8.");
+      return PR_FALSE;
+    }
+    return PR_TRUE;
+  }
+  nsCAutoString preferred;
+  nsCOMPtr<nsICharsetAlias> calias(do_GetService(kCharsetAliasCID, &res));
+  if (NS_FAILED(res)) {
+    NS_ERROR("Could not get CharsetAlias service.");
+    return PR_FALSE;
+  }
+  res = calias->GetPreferred(encoding, preferred);
+  if (NS_FAILED(res)) {
+    return PR_FALSE;
+  }
+  if (preferred.LowerCaseEqualsASCII("utf-16") ||
+      preferred.LowerCaseEqualsASCII("utf-16be") ||
+      preferred.LowerCaseEqualsASCII("utf-16le") ||
+      preferred.LowerCaseEqualsASCII("utf-32") ||
+      preferred.LowerCaseEqualsASCII("utf-32be") ||
+      preferred.LowerCaseEqualsASCII("utf-32le") ||
+      preferred.LowerCaseEqualsASCII("utf-7") ||
+      preferred.LowerCaseEqualsASCII("jis_x0212-1990") ||
+      preferred.LowerCaseEqualsASCII("x-jis0208") ||
+      preferred.LowerCaseEqualsASCII("x-imap4-modified-utf7") ||
+      preferred.LowerCaseEqualsASCII("x-user-defined")) {
+    return PR_FALSE;
+  }
+  res = convManager->GetUnicodeDecoderRaw(preferred.get(), getter_AddRefs(mUnicodeDecoder));
+  if (res == NS_ERROR_UCONV_NOCONV) {
+    return PR_FALSE;
+  } else if (NS_FAILED(res)) {
+    NS_ERROR("Getting an encoding decoder failed in a bad way.");
+    mUnicodeDecoder = nsnull;
+    return PR_FALSE;
+  } else {
+    NS_ASSERTION(mUnicodeDecoder, "Getter nsresult and object don't match.");
+    mCharset.Assign(preferred);
+    return PR_TRUE;
+  }
+}