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1 | /******************************************************************************* |
2 | * Copyright (c) 2015 Ericsson | |
3 | * | |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * Marc-Andre Laperle - Initial API and implementation. | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.tracecompass.internal.tmf.ui.project.wizards.importtrace; | |
14 | ||
15 | import java.io.IOException; | |
16 | import java.io.InputStream; | |
17 | import java.util.ArrayList; | |
18 | import java.util.List; | |
19 | ||
20 | import org.eclipse.tracecompass.internal.tmf.ui.Activator; | |
21 | import org.eclipse.ui.internal.wizards.datatransfer.DataTransferMessages; | |
22 | import org.eclipse.ui.internal.wizards.datatransfer.ILeveledImportStructureProvider; | |
23 | ||
24 | /** | |
25 | * Leveled Structure provider for Gzip file | |
26 | */ | |
27 | @SuppressWarnings("restriction") | |
28 | public class GzipLeveledStructureProvider implements ILeveledImportStructureProvider { | |
29 | ||
30 | private final GzipFile fFile; | |
31 | private final GzipEntry root = new GzipEntry(); | |
32 | private final GzipEntry fEntry; | |
33 | ||
34 | /** | |
35 | * Creates a <code>GzipFileStructureProvider</code>, which will operate on | |
36 | * the passed Gzip file. | |
37 | * | |
38 | * @param sourceFile | |
39 | * the source GzipFile | |
40 | */ | |
41 | public GzipLeveledStructureProvider(GzipFile sourceFile) { | |
42 | super(); | |
43 | ||
44 | fFile = sourceFile; | |
45 | fEntry = sourceFile.entries().nextElement(); | |
46 | } | |
47 | ||
48 | @Override | |
49 | public List getChildren(Object element) { | |
50 | ArrayList<Object> children = new ArrayList<>(); | |
51 | if (element == root) { | |
52 | children.add(fEntry); | |
53 | } | |
54 | return children; | |
55 | } | |
56 | ||
57 | @Override | |
58 | public InputStream getContents(Object element) { | |
59 | return fFile.getInputStream((GzipEntry) element); | |
60 | } | |
61 | ||
62 | @Override | |
63 | public String getFullPath(Object element) { | |
64 | return ((GzipEntry) element).getName(); | |
65 | } | |
66 | ||
67 | @Override | |
68 | public String getLabel(Object element) { | |
69 | if (element != root && element != fEntry) { | |
70 | throw new IllegalArgumentException(); | |
71 | } | |
72 | return ((GzipEntry) element).getName(); | |
73 | } | |
74 | ||
75 | /** | |
76 | * Returns the entry that this importer uses as the root sentinel. | |
77 | * | |
78 | * @return GzipEntry entry | |
79 | */ | |
80 | @Override | |
81 | public GzipEntry getRoot() { | |
82 | return root; | |
83 | } | |
84 | ||
85 | @Override | |
86 | public boolean closeArchive() { | |
87 | try { | |
88 | fFile.close(); | |
89 | } catch (IOException e) { | |
90 | Activator.getDefault().logError(DataTransferMessages.ZipImport_couldNotClose | |
91 | + fFile.getName(), e); | |
92 | return false; | |
93 | } | |
94 | return true; | |
95 | } | |
96 | ||
97 | @Override | |
98 | public boolean isFolder(Object element) { | |
99 | return ((GzipEntry) element).getFileType() == GzipEntry.DIRECTORY; | |
100 | } | |
101 | ||
102 | @Override | |
103 | public void setStrip(int level) { | |
104 | // Do nothing | |
105 | } | |
106 | ||
107 | @Override | |
108 | public int getStrip() { | |
109 | return 0; | |
110 | } | |
111 | } |