-
Notifications
You must be signed in to change notification settings - Fork 474
/
ExtractionMethods.cs
93 lines (82 loc) · 3.45 KB
/
ExtractionMethods.cs
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
using System;
using System.IO;
namespace SharpCompress.Common
{
internal static class ExtractionMethods
{
/// <summary>
/// Extract to specific directory, retaining filename
/// </summary>
public static void WriteEntryToDirectory(IEntry entry,
string destinationDirectory,
ExtractionOptions? options,
Action<string, ExtractionOptions?> write)
{
string destinationFileName;
string file = Path.GetFileName(entry.Key);
string fullDestinationDirectoryPath = Path.GetFullPath(destinationDirectory);
options ??= new ExtractionOptions()
{
Overwrite = true
};
if (options.ExtractFullPath)
{
string folder = Path.GetDirectoryName(entry.Key)!;
string destdir = Path.GetFullPath(Path.Combine(fullDestinationDirectoryPath, folder!));
if (!Directory.Exists(destdir))
{
if (!destdir.StartsWith(fullDestinationDirectoryPath))
{
throw new ExtractionException("Entry is trying to create a directory outside of the destination directory.");
}
Directory.CreateDirectory(destdir);
}
destinationFileName = Path.Combine(destdir, file);
}
else
{
destinationFileName = Path.Combine(fullDestinationDirectoryPath, file);
}
if (!entry.IsDirectory)
{
destinationFileName = Path.GetFullPath(destinationFileName);
if (!destinationFileName.StartsWith(fullDestinationDirectoryPath))
{
throw new ExtractionException("Entry is trying to write a file outside of the destination directory.");
}
write(destinationFileName, options);
}
else if (options.ExtractFullPath && !Directory.Exists(destinationFileName))
{
Directory.CreateDirectory(destinationFileName);
}
}
public static void WriteEntryToFile(IEntry entry, string destinationFileName,
ExtractionOptions? options,
Action<string, FileMode> openAndWrite)
{
if (entry.LinkTarget != null)
{
if (options?.WriteSymbolicLink is null)
{
throw new ExtractionException("Entry is a symbolic link but ExtractionOptions.WriteSymbolicLink delegate is null");
}
options.WriteSymbolicLink(destinationFileName, entry.LinkTarget);
}
else
{
FileMode fm = FileMode.Create;
options ??= new ExtractionOptions()
{
Overwrite = true
};
if (!options.Overwrite)
{
fm = FileMode.CreateNew;
}
openAndWrite(destinationFileName, fm);
entry.PreserveExtractionOptions(destinationFileName, options);
}
}
}
}