blob: f6e5a4ffab738f8ca9a8e82d45d420da989e8bdd (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
////////////////////////////////////////////////////////////////////////////////
// This source file is part of the ZipArchive Library Open Source distribution
// and is Copyrighted 2000 - 2022 by Artpol Software - Tadeusz Dracz
//
// 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 2
// of the License, or (at your option) any later version.
//
// For the licensing details refer to the License.txt file.
//
// Web Site: https://www.artpol-software.com
////////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "ZipArchive.h"
#include "ZipExtraData.h"
#include "BytesWriter.h"
using namespace ZipArchiveLib;
bool CZipExtraData::Read(char* buffer, WORD uSize)
{
if (uSize < 4)
return false;
CBytesWriter::ReadBytes(m_uHeaderID, buffer);
m_bHasSize = CZipExtraField::HasSize(m_uHeaderID);
WORD size;
if (m_bHasSize)
{
CBytesWriter::ReadBytes(size, buffer + 2);
if (size > (WORD)(uSize - 4))
return false;
m_data.Allocate(size);
memcpy(m_data, buffer + 4, size);
}
else
{
// The size is not always relevant (in extra headers not conforming to the standard)
size = (WORD)(uSize - 2);
m_data.Allocate(size);
memcpy(m_data, buffer + 2, size);
}
return true;
}
WORD CZipExtraData::Write(char* buffer)const
{
CBytesWriter::WriteBytes(buffer, m_uHeaderID);
WORD size = (WORD)m_data.GetSize();
buffer += 2;
if (m_bHasSize)
{
CBytesWriter::WriteBytes(buffer, size);
buffer += 2;
}
memcpy(buffer, m_data, size);
return (WORD)(size + 4);
}
|
