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+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 3 of
+// the License, or (at your option) any later version.
+//
+// This program 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
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library. Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+#ifndef VMIME_CHARSETCONVERTER_ICONV_HPP_INCLUDED
+#define VMIME_CHARSETCONVERTER_ICONV_HPP_INCLUDED
+
+
+#include "vmime/config.hpp"
+
+
+#if VMIME_CHARSETCONV_LIB_IS_ICONV
+
+
+#include "vmime/charsetConverter.hpp"
+
+
+namespace vmime {
+
+
+/** A generic charset converter which uses iconv library.
+ */
+class charsetConverter_iconv : public charsetConverter {
+
+public:
+
+ /** Construct and initialize an iconv charset converter.
+ *
+ * @param source input charset
+ * @param dest output charset
+ * @param opts conversion options
+ */
+ charsetConverter_iconv(
+ const charset& source,
+ const charset& dest,
+ const charsetConverterOptions& opts = charsetConverterOptions()
+ );
+
+ ~charsetConverter_iconv();
+
+ void convert(const string& in, string& out, status* st = NULL);
+ void convert(utility::inputStream& in, utility::outputStream& out, status* st = NULL);
+
+ shared_ptr <utility::charsetFilteredOutputStream> getFilteredOutputStream(
+ utility::outputStream& os,
+ const charsetConverterOptions& opts = charsetConverterOptions()
+ );
+
+private:
+
+ void* m_desc;
+
+ charset m_source;
+ charset m_dest;
+
+ charsetConverterOptions m_options;
+};
+
+
+namespace utility {
+
+
+class charsetFilteredOutputStream_iconv : public charsetFilteredOutputStream {
+
+public:
+
+ /** Construct a new filter for the specified output stream.
+ *
+ * @param source input charset
+ * @param dest output charset
+ * @param os stream into which write filtered data
+ * @param opts conversion options
+ */
+ charsetFilteredOutputStream_iconv(
+ const charset& source,
+ const charset& dest, outputStream* os,
+ const charsetConverterOptions& opts = charsetConverterOptions()
+ );
+
+ ~charsetFilteredOutputStream_iconv();
+
+
+ outputStream& getNextOutputStream();
+
+ void flush();
+
+protected:
+
+ void writeImpl(const byte_t* const data, const size_t count);
+
+private:
+
+ // Maximum character width in any charset
+ enum { MAX_CHARACTER_WIDTH = 128 };
+
+
+ void* m_desc;
+
+ const charset m_sourceCharset;
+ const charset m_destCharset;
+
+ outputStream& m_stream;
+
+ // Buffer in which unconverted bytes are left until they can
+ // be converted (when more data arrives). The length should be
+ // large enough to contain any character in any charset.
+ byte_t m_unconvBuffer[MAX_CHARACTER_WIDTH];
+ size_t m_unconvCount;
+
+ // Buffer used for conversion. Avoids declaring it in write().
+ // Should be at least MAX_CHARACTER_WIDTH * MAX_CHARACTER_WIDTH.
+ byte_t m_outputBuffer[32768];
+
+ charsetConverterOptions m_options;
+};
+
+
+} // utility
+
+
+} // vmime
+
+
+#endif // VMIME_CHARSETCONV_LIB_IS_ICONV
+
+#endif // VMIME_CHARSETCONVERTER_ICONV_HPP_INCLUDED