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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "ZipArchive.h"
#include <algorithm>
#include <stdexcept>
#include <assert.h>
#include "System/StringUtil.h"
#include "System/Log/ILog.h"
CZipArchiveFactory::CZipArchiveFactory()
: IArchiveFactory("sdz")
{
}
IArchive* CZipArchiveFactory::DoCreateArchive(const std::string& filePath) const
{
return new CZipArchive(filePath);
}
CZipArchive::CZipArchive(const std::string& archiveName)
: CBufferedArchive(archiveName)
{
zip = unzOpen(archiveName.c_str());
if (!zip) {
LOG_L(L_ERROR, "Error opening \"%s\"", archiveName.c_str());
return;
}
// We need to map file positions to speed up opening later
for (int ret = unzGoToFirstFile(zip); ret == UNZ_OK; ret = unzGoToNextFile(zip))
{
unz_file_info info;
char fName[512];
unzGetCurrentFileInfo(zip, &info, fName, 512, nullptr, 0, nullptr, 0);
const std::string fLowerName = StringToLower(fName);
if (fLowerName.empty()) {
continue;
}
const char last = fLowerName[fLowerName.length() - 1];
if ((last == '/') || (last == '\\')) {
continue; // exclude directory names
}
FileData fd;
unzGetFilePos(zip, &fd.fp);
fd.size = info.uncompressed_size;
fd.origName = fName;
fd.crc = info.crc;
fileData.push_back(fd);
lcNameIndex[fLowerName] = fileData.size() - 1;
}
}
CZipArchive::~CZipArchive()
{
if (zip != nullptr) {
unzClose(zip);
zip = nullptr;
}
}
bool CZipArchive::IsOpen()
{
return (zip != nullptr);
}
unsigned int CZipArchive::NumFiles() const
{
return fileData.size();
}
void CZipArchive::FileInfo(unsigned int fid, std::string& name, int& size) const
{
assert(IsFileId(fid));
name = fileData[fid].origName;
size = fileData[fid].size;
}
unsigned int CZipArchive::GetCrc32(unsigned int fid)
{
assert(IsFileId(fid));
return fileData[fid].crc;
}
// To simplify things, files are always read completely into memory from
// the zip-file, since zlib does not provide any way of reading more
// than one file at a time
bool CZipArchive::GetFileImpl(unsigned int fid, std::vector<std::uint8_t>& buffer)
{
// Prevent opening files on missing/invalid archives
if (!zip) {
return false;
}
assert(IsFileId(fid));
unzGoToFilePos(zip, &fileData[fid].fp);
unz_file_info fi;
unzGetCurrentFileInfo(zip, &fi, nullptr, 0, nullptr, 0, nullptr, 0);
if (unzOpenCurrentFile(zip) != UNZ_OK) {
return false;
}
buffer.resize(fi.uncompressed_size);
bool ret = true;
if (!buffer.empty() && unzReadCurrentFile(zip, &buffer[0], fi.uncompressed_size) != fi.uncompressed_size) {
ret = false;
}
if (unzCloseCurrentFile(zip) == UNZ_CRCERROR) {
ret = false;
}
if (!ret) {
buffer.clear();
}
return ret;
}
|
