1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_scfilt.hxx"
26
27 #include <sal/config.h>
28 #include <stdio.h>
29 #include <sfx2/docfile.hxx>
30
31 #include "global.hxx"
32 #include "scerrors.hxx"
33 #include "docpool.hxx"
34 #include "patattr.hxx"
35 #include "filter.hxx"
36 #include "document.hxx"
37 #include "cell.hxx"
38 #include "biff.hxx"
39
ScBiffReader(SfxMedium & rMedium)40 ScBiffReader::ScBiffReader( SfxMedium & rMedium ) :
41 mnId(0),
42 mnLength(0),
43 mnOffset(0)
44 {
45 mpStream = rMedium.GetInStream();
46 if( mpStream )
47 {
48 mpStream->SetBufferSize( 65535 );
49 mpStream->SetStreamCharSet( RTL_TEXTENCODING_MS_1252 );
50 }
51 }
52
~ScBiffReader()53 ScBiffReader::~ScBiffReader()
54 {
55 if( mpStream )
56 mpStream->SetBufferSize( 0 );
57 }
58
nextRecord()59 bool ScBiffReader::nextRecord()
60 {
61 if( !recordsLeft() )
62 return false;
63
64 if( IsEndOfFile() )
65 return false;
66
67 sal_uInt32 nPos = mpStream->Tell();
68 if( nPos != mnOffset + mnLength )
69 mpStream->Seek( mnOffset + mnLength );
70
71 mnLength = mnId = 0;
72 *mpStream >> mnId >> mnLength;
73
74 mnOffset = mpStream->Tell();
75 #ifdef DEBUG
76 fprintf( stderr, "Read record 0x%x length 0x%x at offset 0x%x\n",
77 (unsigned)mnId, (unsigned)mnLength, (unsigned)mnOffset );
78
79 #if 1 // rather verbose
80 int len = mnLength;
81 while (len > 0) {
82 int i, chunk = len < 16 ? len : 16;
83 unsigned char data[16];
84 mpStream->Read( data, chunk );
85
86 for (i = 0; i < chunk; i++)
87 fprintf( stderr, "%.2x ", data[i] );
88 fprintf( stderr, "| " );
89 for (i = 0; i < chunk; i++)
90 fprintf( stderr, "%c", data[i] < 127 && data[i] > 30 ? data[i] : '.' );
91 fprintf( stderr, "\n" );
92
93 len -= chunk;
94 }
95 mpStream->Seek( mnOffset );
96 #endif
97 #endif
98 return true;
99 }
100