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/* -*- 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 <string.h>
#include <stdlib.h>
#include <rtl/strbuf.hxx>
#include <tools/stream.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
OString DXFReadLine(SvStream& rIStm)
{
char buf[256 + 1];
bool bEnd = false;
sal_uLong nOldFilePos = rIStm.Tell();
char c = 0;
OStringBuffer aBuf;
while( !bEnd && !rIStm.GetError() ) // !!! do not check for EOF
// !!! because we read blockwise
{
sal_uInt16 nLen = (sal_uInt16)rIStm.Read( 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.Read(&cTemp, 1);
if( cTemp == c || (cTemp != '\n' && cTemp != '\r') )
rIStm.Seek( nOldFilePos );
}
return aBuf.makeStringAndClear();
}
void DXFSkipLine(SvStream& rIStm)
{
while (rIStm.good())
{
char buf[256 + 1];
sal_uInt16 nLen = (sal_uInt16)rIStm.Read(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.Read(&c1, 1);
if (c1 == c || (c1 != '\n' && c1!= '\r'))
rIStm.SeekRel(-1);
return;
}
}
}
}
DXFGroupReader::DXFGroupReader(SvStream & rIStream)
: rIS(rIStream)
, bStatus(true)
, nLastG(0)
, nGCount(0)
, S()
, I(0)
{
rIS.Seek(STREAM_SEEK_TO_END);
nFileSize=rIS.Tell();
rIS.Seek(0);
}
sal_uInt16 DXFGroupReader::Read()
{
sal_uInt16 nG = 0;
if ( bStatus )
{
nGCount++;
nG = (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;
SetS();
if ( nGCount != 0xffffffff )
{
// InfoBox(NULL,String("Error in group # ")+String(nGCount)).Execute();
nGCount=0xffffffff;
}
}
nLastG = nG;
return nG;
}
void DXFGroupReader::SetS()
{
S = "EOF";
}
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;
}
long res = 0, nv = 1;
if (*p == '-') {
nv=-1;
p++;
}
while ((p != end) && *p >= '0' && *p <= '9') {
res=res*10+static_cast<long>(*p-'0');
p++;
}
while ((p != end) && (*p==0x20)) p++;
if (p != end) {
bStatus=false;
return 0;
}
return res*nv;
}
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);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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