1 files changed, 128 insertions, 0 deletions
diff --git a/oox/source/helper/textinputstream.cxx b/oox/source/helper/textinputstream.cxx
new file mode 100755
index 000000000000..d6d4736f3ca2
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+++ b/oox/source/helper/textinputstream.cxx
@@ -0,0 +1,128 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#include "oox/helper/textinputstream.hxx"
+#include <rtl/strbuf.hxx>
+#include <rtl/ustrbuf.hxx>
+#include "oox/helper/binaryinputstream.hxx"
+
+using ::rtl::OStringBuffer;
+using ::rtl::OStringToOUString;
+using ::rtl::OUString;
+using ::rtl::OUStringBuffer;
+
+namespace oox {
+
+// ============================================================================
+
+namespace {
+
+/** Reads a text line from stream. First, tries to skip the second character of
+    a two-character line end sequence. Returns the new line-end character. */
+template< typename BufferType, typename CharType, typename StreamDataType >
+sal_Unicode lclReadLine( BufferType& orBuffer, BinaryInputStream& rInStrm, sal_Unicode cLastEolChar )
+{
+    // try to skip LF following CR, or CR following LF
+    if( !rInStrm.isEof() && (cLastEolChar != 0) )
+    {
+        CharType cChar = static_cast< CharType >( rInStrm.readValue< StreamDataType >() );
+        // return on EOF after line-end
+        if( rInStrm.isEof() )
+            return 0;
+        // return on sequence of equal line-end characters
+        bool bIsEolChar = (cChar == 10) || (cChar == 13);
+        if( bIsEolChar && (cChar == cLastEolChar) )
+            return cChar;
+        // append the character, if it is not the other line-end charcter
+        if( !bIsEolChar )
+            orBuffer.append( cChar );
+    }
+
+    // read chars until EOF or line end character (LF or CR)
+    while( true )
+    {
+        CharType cChar = static_cast< CharType >( rInStrm.readValue< StreamDataType >() );
+        if( rInStrm.isEof() )
+            return 0;
+        if( (cChar == 10) || (cChar == 13) )
+            return cChar;
+        orBuffer.append( cChar );
+    }
+}
+
+} // namespace
+
+// ============================================================================
+
+TextInputStream::TextInputStream( BinaryInputStream& rInStrm, rtl_TextEncoding eTextEnc ) :
+    mrInStrm( rInStrm ),
+    meTextEnc( eTextEnc ),
+    mcLastEolChar( 0 )
+{
+}
+
+bool TextInputStream::isEof() const
+{
+    // do not return EOF, if last text line missed line-end character (see below)
+    return mrInStrm.isEof() && (mcLastEolChar == 0);
+}
+
+OUString TextInputStream::readLine()
+{
+    if( mrInStrm.isEof() )
+    {
+        mcLastEolChar = 0;
+        return OUString();
+    }
+
+    OUString aLine;
+    if( meTextEnc == RTL_TEXTENCODING_UCS2 )
+    {
+        // read 16-bit characters for UCS2 encoding
+        OUStringBuffer aBuffer;
+        mcLastEolChar = lclReadLine< OUStringBuffer, sal_Unicode, sal_uInt16 >( aBuffer, mrInStrm, mcLastEolChar );
+        aLine = aBuffer.makeStringAndClear();
+    }
+    else
+    {
+        // otherwise, read 8-bit characters and convert according to text encoding
+        OStringBuffer aBuffer;
+        mcLastEolChar = lclReadLine< OStringBuffer, sal_Char, sal_uInt8 >( aBuffer, mrInStrm, mcLastEolChar );
+        aLine = OStringToOUString( aBuffer.makeStringAndClear(), meTextEnc );
+    }
+
+    // if last line is not empty but line-end character is missing, do not return EOF
+    if( mrInStrm.isEof() && (aLine.getLength() > 0) )
+        mcLastEolChar = 10;
+
+    return aLine;
+}
+
+// ============================================================================
+
+} // namespace oox
+