ae.sys.archive source code

1 /**
2  * ae.sys.archive
3  *
4  * License:
5  *   This Source Code Form is subject to the terms of
6  *   the Mozilla Public License, v. 2.0. If a copy of
7  *   the MPL was not distributed with this file, You
8  *   can obtain one at http://mozilla.org/MPL/2.0/.
9  *
10  * Authors:
11  *   Vladimir Panteleev <vladimir@thecybershadow.net>
12  */
13 
14 module ae.sys.archive;
15 
16 import std.exception;
17 import std.file;
18 import std.path;
19 import std.process;
20 import std.string;
21 
22 import ae.sys.file;
23 import ae.sys.install.sevenzip;
24 
25 /// Unzips a .zip file to the target directory.
26 void unzip(string zip, string target)
27 {
28 	import std.zip;
29 	auto archive = new ZipArchive(zip.read);
30 	foreach (name, entry; archive.directory)
31 	{
32 		auto path = buildPath(target, name);
33 		ensurePathExists(path);
34 		if (name.endsWith(`/`))
35 		{
36 			if (!path.exists)
37 				path.mkdirRecurse();
38 		}
39 		else
40 			std.file.write(path, archive.expand(entry));
41 	}
42 }
43 
44 /// Unpacks an archive to the specified directory.
45 /// Uses std.zip for .zip files, and invokes 7-Zip for
46 /// other file types (installing it locally if necessary).
47 void unpack(string archive, string target)
48 {
49 	if (archive.toLower().endsWith(".zip"))
50 		archive.unzip(target);
51 	else
52 	{
53 		sevenZip.require();
54 		target.mkdirRecurse();
55 		auto pid = spawnProcess([sevenZip.exe, "x", "-o" ~ target, archive]);
56 		enforce(pid.wait() == 0, "Extraction failed");
57 	}
58 }