Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 213 insertions, 0 deletions

diff --git a/vcl/source/filter/idxf/dxfgrprd.cxx b/vcl/source/filter/idxf/dxfgrprd.cxx
new file mode 100644
index 000000000..48cdb3660
--- /dev/null
+++ b/vcl/source/filter/idxf/dxfgrprd.cxx
@@ -0,0 +1,213 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <stdlib.h>
+#include <rtl/strbuf.hxx>
+#include <tools/stream.hxx>
+#include <o3tl/string_view.hxx>
+#include "dxfgrprd.hxx"
+
+// we use an own ReadLine function, because Stream::ReadLine stops if
+// a 0-sign occurs; this function converts 0-signs to blanks and reads
+// a complete line until a cr/lf is found
+
+static OString DXFReadLine(SvStream& rIStm)
+{
+    char  buf[256 + 1];
+    bool  bEnd = false;
+    sal_uInt64 nOldFilePos = rIStm.Tell();
+    char  c = 0;
+
+    OStringBuffer aBuf(512);
+
+    while( !bEnd && !rIStm.GetError() )   // !!! do not check for EOF
+                                          // !!! because we read blockwise
+    {
+        sal_uInt16 nLen = static_cast<sal_uInt16>(rIStm.ReadBytes(buf, sizeof(buf)-1));
+        if( !nLen )
+        {
+            if( aBuf.isEmpty() )
+                return OString();
+            else
+                break;
+        }
+
+        for( sal_uInt16 n = 0; n < nLen ; n++ )
+        {
+            c = buf[n];
+            if( c != '\n' && c != '\r' )
+            {
+                if( !c )
+                    c = ' ';
+                aBuf.append(c);
+            }
+            else
+            {
+                bEnd = true;
+                break;
+            }
+        }
+    }
+
+    if( !bEnd && !rIStm.GetError() && !aBuf.isEmpty() )
+        bEnd = true;
+
+    nOldFilePos += aBuf.getLength();
+    if( rIStm.Tell() > nOldFilePos )
+        nOldFilePos++;
+    rIStm.Seek( nOldFilePos );  // seek because of BlockRead above!
+
+    if( bEnd && (c=='\r' || c=='\n'))  // special treatment of DOS files
+    {
+        char cTemp(0);
+        rIStm.ReadBytes(&cTemp, 1);
+        if( cTemp == c || (cTemp != '\n' && cTemp != '\r') )
+            rIStm.Seek( nOldFilePos );
+    }
+
+    return aBuf.makeStringAndClear();
+}
+
+static void DXFSkipLine(SvStream& rIStm)
+{
+    while (rIStm.good())
+    {
+        char  buf[256 + 1];
+        sal_uInt16 nLen = static_cast<sal_uInt16>(rIStm.ReadBytes(buf, sizeof(buf) - 1));
+        for (sal_uInt16 n = 0; n < nLen; n++)
+        {
+            char c = buf[n];
+            if ((c == '\n') || (c == '\r'))
+            {
+                rIStm.SeekRel(n-nLen+1); // return stream to next to current position
+                char c1 = 0;
+                rIStm.ReadBytes(&c1, 1);
+                if (c1 == c || (c1 != '\n' && c1!= '\r'))
+                    rIStm.SeekRel(-1);
+                return;
+            }
+        }
+    }
+}
+
+DXFGroupReader::DXFGroupReader(SvStream & rIStream)
+  : rIS(rIStream)
+  , bStatus(true)
+  , nLastG(0)
+  , I(0)
+{
+    rIS.Seek(0);
+}
+
+sal_uInt16 DXFGroupReader::Read()
+{
+    sal_uInt16 nG = 0;
+    if ( bStatus )
+    {
+        nG = static_cast<sal_uInt16>(ReadI());
+        if ( bStatus )
+        {
+            if      (nG<  10) ReadS();
+            else if (nG<  60) F = ReadF();
+            else if (nG<  80) I = ReadI();
+            else if (nG<  90) DXFSkipLine(rIS);
+            else if (nG<  99) I = ReadI();
+            else if (nG==100) ReadS();
+            else if (nG==102) ReadS();
+            else if (nG==105) DXFSkipLine(rIS);
+            else if (nG< 140) DXFSkipLine(rIS);
+            else if (nG< 148) F = ReadF();
+            else if (nG< 170) DXFSkipLine(rIS);
+            else if (nG< 176) I = ReadI();
+            else if (nG< 180) DXFSkipLine(rIS); // ReadI();
+            else if (nG< 210) DXFSkipLine(rIS);
+            else if (nG< 240) F = ReadF();
+            else if (nG<=369) DXFSkipLine(rIS);
+            else if (nG< 999) DXFSkipLine(rIS);
+            else if (nG<1010) ReadS();
+            else if (nG<1060) F = ReadF();
+            else if (nG<1072) I = ReadI();
+            else bStatus = false;
+        }
+    }
+    if ( !bStatus )
+    {
+        nG = 0;
+        S = "EOF";
+    }
+    nLastG = nG;
+    return nG;
+}
+
+tools::Long DXFGroupReader::ReadI()
+{
+    OString s = DXFReadLine(rIS);
+    char *p=s.pData->buffer;
+    const char *end = s.pData->buffer + s.pData->length;
+
+    while((p != end) && (*p==0x20)) p++;
+
+    if ((p == end) || ((*p<'0' || *p>'9') && *p!='-')) {
+        bStatus=false;
+        return 0;
+    }
+
+    OStringBuffer aNumber;
+    if (*p == '-') {
+        aNumber.append(*p++);
+    }
+
+    while ((p != end) && *p >= '0' && *p <= '9') {
+        aNumber.append(*p++);
+    }
+
+    while ((p != end) && (*p==0x20)) p++;
+    if (p != end) {
+        bStatus=false;
+        return 0;
+    }
+
+    return o3tl::toInt32(aNumber);
+}
+
+double DXFGroupReader::ReadF()
+{
+    OString s = DXFReadLine(rIS);
+    char *p = s.pData->buffer;
+    const char *end = s.pData->buffer + s.pData->length;
+
+    while((p != end) && (*p==0x20)) p++;
+    if ((p == end) || ((*p<'0' || *p>'9') && *p!='.' && *p!='-')) {
+        bStatus=false;
+        return 0.0;
+    }
+    return atof(p);
+}
+
+void DXFGroupReader::ReadS()
+{
+    S = DXFReadLine(rIS);
+}
+
+sal_uInt64 DXFGroupReader::remainingSize() const
+{
+    return rIS.remainingSize();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */