1 files changed, 152 insertions, 0 deletions
diff --git a/cosv/inc/cosv/bstream.hxx b/cosv/inc/cosv/bstream.hxx
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+++ b/cosv/inc/cosv/bstream.hxx
@@ -0,0 +1,152 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * 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.
+ *
+ ************************************************************************/
+
+#ifndef CSV_BSTREAM_HXX
+#define CSV_BSTREAM_HXX
+
+#include <string.h>
+#include <cosv/string.hxx>
+
+
+namespace csv
+{
+
+
+enum seek_dir
+{
+    beg = 0,
+    cur = 1,
+    end = 2
+};
+
+
+class bistream
+{
+  public:
+    // LIFECYCLE
+    virtual             ~bistream() {}
+
+    //  OPERATIONS
+        /// @return Number of actually read bytes.
+    uintt               read(
+                            void *          out_pDest,
+                            uintt           i_nNrofBytes);
+    // INQUIRY
+        /**  @return True, if already one try to read had failed.
+             There is no guarantee, that it returns true, if end of data
+             is just reached.
+             Though it will return false, if there is still somemething
+             to read.
+        */
+    bool                eod() const;
+
+  private:
+    virtual uintt       do_read(
+                            void *          out_pDest,
+                            uintt           i_nNrofBytes) = 0;
+    virtual bool        inq_eod() const = 0;
+};
+
+
+class bostream
+{
+  public:
+    // LIFECYCLE
+    virtual             ~bostream() {}
+
+    //  OPERATIONS
+        /// @return Number of actually written bytes.
+    uintt               write(
+                            const void *    i_pSrc,
+                            uintt           i_nNrofBytes);
+        /// @return Number of actually written bytes.
+    uintt               write(
+                            const char *    i_pSrc );
+        /// @return Number of actually written bytes.
+    uintt               write(
+                            const String &  i_pSrc );
+  private:
+    virtual uintt       do_write(
+                            const void *    i_pSrc,
+                            uintt           i_nNrofBytes) = 0;
+};
+
+
+class bstream : public bistream,
+                public bostream
+{
+  public:
+    uintt               seek(
+                            intt            i_nDistanceFromBegin,
+                            seek_dir        i_eStartPoint = ::csv::beg );
+    uintt               position() const;
+
+  private:
+    virtual uintt       do_seek(
+                            intt            i_nDistance,
+                            seek_dir        i_eStartPoint = ::csv::beg ) = 0;
+    virtual uintt       inq_position() const = 0;
+};
+
+
+// IMPLEMENTATION
+inline uintt
+bistream::read( void *         o_pDest,
+               uintt           i_nNrofBytes)
+    { return do_read(o_pDest, i_nNrofBytes); }
+inline bool
+bistream::eod() const
+    { return inq_eod(); }
+
+inline uintt
+bostream::write( const void *   i_pSrc,
+                 uintt          i_nNrofBytes)
+    { return do_write( i_pSrc, i_nNrofBytes ); }
+inline uintt
+bostream::write( const char * i_sSrc )
+    { return write( i_sSrc, strlen(i_sSrc) ); }
+inline uintt
+bostream::write( const String & i_sSrc )
+    { return write( i_sSrc.c_str(), i_sSrc.length() ); }
+
+inline uintt
+bstream::seek( intt     i_nDistance,
+               seek_dir i_eStartPoint )
+    { return do_seek( i_nDistance, i_eStartPoint ); }
+inline uintt
+bstream::position() const
+    { return inq_position(); }
+
+
+
+}   // namespace csv
+
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */