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1 | !7 |
2 | |
3 | lib 1008994 // junrar |
4 | lib 1003619 // apache logging |
5 | |
6 | import org.apache.commons.logging.Log; |
7 | import org.apache.commons.logging.LogFactory; |
8 | |
9 | import com.github.junrar.Archive; |
10 | import com.github.junrar.exception.RarException; |
11 | import com.github.junrar.rarfile.FileHeader; |
12 | |
13 | /** |
14 | * extract an archive to the given location |
15 | * |
16 | * @author edmund wagner |
17 | * |
18 | */ |
19 | |
20 | private static Log logger = LogFactory.getLog(main.class |
21 | .getName()); |
22 | |
23 | public static void extractArchive(String archive, String destination) {
|
24 | if (archive == null || destination == null) {
|
25 | throw new RuntimeException("archive and destination must me set");
|
26 | } |
27 | File arch = new File(archive); |
28 | if (!arch.exists()) {
|
29 | throw new RuntimeException("the archive does not exit: " + archive);
|
30 | } |
31 | File dest = new File(destination); |
32 | if (!dest.exists() || !dest.isDirectory()) {
|
33 | throw new RuntimeException( |
34 | "the destination must exist and point to a directory: " |
35 | + destination); |
36 | } |
37 | extractArchive(arch, dest); |
38 | } |
39 | |
40 | p {
|
41 | if (args.length == 2) {
|
42 | extractArchive(args[0], args[1]); |
43 | } else {
|
44 | System.out |
45 | .println("usage: java -jar extractArchive.jar <thearchive> <the destination directory>");
|
46 | } |
47 | } |
48 | |
49 | public static void extractArchive(File archive, File destination) {
|
50 | Archive arch = null; |
51 | try {
|
52 | arch = new Archive(archive); |
53 | } catch (RarException e) {
|
54 | logger.error(e); |
55 | } catch (IOException e1) {
|
56 | logger.error(e1); |
57 | } |
58 | if (arch != null) {
|
59 | if (arch.isEncrypted()) {
|
60 | logger.warn("archive is encrypted cannot extreact");
|
61 | return; |
62 | } |
63 | FileHeader fh = null; |
64 | while (true) {
|
65 | fh = arch.nextFileHeader(); |
66 | if (fh == null) {
|
67 | break; |
68 | } |
69 | if (fh.isEncrypted()) {
|
70 | logger.warn("file is encrypted cannot extract: "
|
71 | + fh.getFileNameString()); |
72 | continue; |
73 | } |
74 | logger.info("extracting: " + fh.getFileNameString());
|
75 | try {
|
76 | if (fh.isDirectory()) {
|
77 | createDirectory(fh, destination); |
78 | } else {
|
79 | File f = createFile(fh, destination); |
80 | OutputStream stream = new FileOutputStream(f); |
81 | arch.extractFile(fh, stream); |
82 | stream.close(); |
83 | } |
84 | } catch (IOException e) {
|
85 | logger.error("error extracting the file", e);
|
86 | } catch (RarException e) {
|
87 | logger.error("error extraction the file", e);
|
88 | } |
89 | } |
90 | } |
91 | } |
92 | |
93 | private static File createFile(FileHeader fh, File destination) {
|
94 | File f = null; |
95 | String name = null; |
96 | if (fh.isFileHeader() && fh.isUnicode()) {
|
97 | name = fh.getFileNameW(); |
98 | } else {
|
99 | name = fh.getFileNameString(); |
100 | } |
101 | f = new File(destination, name); |
102 | if (!f.exists()) {
|
103 | try {
|
104 | f = makeFile(destination, name); |
105 | } catch (IOException e) {
|
106 | logger.error("error creating the new file: " + f.getName(), e);
|
107 | } |
108 | } |
109 | return f; |
110 | } |
111 | |
112 | private static File makeFile(File destination, String name) |
113 | throws IOException {
|
114 | String[] dirs = name.split("\\\\");
|
115 | if (dirs == null) {
|
116 | return null; |
117 | } |
118 | String path = ""; |
119 | int size = dirs.length; |
120 | if (size == 1) {
|
121 | return new File(destination, name); |
122 | } else if (size > 1) {
|
123 | for (int i = 0; i < dirs.length - 1; i++) {
|
124 | path = path + File.separator + dirs[i]; |
125 | new File(destination, path).mkdir(); |
126 | } |
127 | path = path + File.separator + dirs[dirs.length - 1]; |
128 | File f = new File(destination, path); |
129 | f.createNewFile(); |
130 | return f; |
131 | } else {
|
132 | return null; |
133 | } |
134 | } |
135 | |
136 | private static void createDirectory(FileHeader fh, File destination) {
|
137 | File f = null; |
138 | if (fh.isDirectory() && fh.isUnicode()) {
|
139 | f = new File(destination, fh.getFileNameW()); |
140 | if (!f.exists()) {
|
141 | makeDirectory(destination, fh.getFileNameW()); |
142 | } |
143 | } else if (fh.isDirectory() && !fh.isUnicode()) {
|
144 | f = new File(destination, fh.getFileNameString()); |
145 | if (!f.exists()) {
|
146 | makeDirectory(destination, fh.getFileNameString()); |
147 | } |
148 | } |
149 | } |
150 | |
151 | private static void makeDirectory(File destination, String fileName) {
|
152 | String[] dirs = fileName.split("\\\\");
|
153 | if (dirs == null) {
|
154 | return; |
155 | } |
156 | String path = ""; |
157 | for (String dir : dirs) {
|
158 | path = path + File.separator + dir; |
159 | new File(destination, path).mkdir(); |
160 | } |
161 | |
162 | } |
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| Snippet ID: | #1008995 |
| Snippet name: | Extract RAR [WORKS] |
| Eternal ID of this version: | #1008995/4 |
| Text MD5: | 2b22636eb75fc30f2a3065f48db3b429 |
| Transpilation MD5: | 06468852c8b7c6dfb6e559a90823599b |
| Author: | stefan |
| Category: | javax / i.o. |
| Type: | JavaX source code |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2017-06-23 17:42:51 |
| Source code size: | 4291 bytes / 162 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 564 / 620 |
| Version history: | 3 change(s) |
| Referenced in: | [show references] |