01: /***
02: * Retrotranslator: a Java bytecode transformer that translates Java classes
03: * compiled with JDK 5.0 into classes that can be run on JVM 1.4.
04: *
05: * Copyright (c) 2005 - 2008 Taras Puchko
06: * All rights reserved.
07: *
08: * Redistribution and use in source and binary forms, with or without
09: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. Neither the name of the copyright holders nor the names of its
17: * contributors may be used to endorse or promote products derived from
18: * this software without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30: * THE POSSIBILITY OF SUCH DAMAGE.
31: */package net.sf.retrotranslator.transformer;
32:
33: import java.io.*;
34: import java.util.Collection;
35:
36: /**
37: * @author Taras Puchko
38: */
39: abstract class FileContainer {
40:
41: protected File location;
42:
43: protected FileContainer(File location) {
44: this .location = location;
45: }
46:
47: public File getLocation() {
48: return location;
49: }
50:
51: public abstract Collection<? extends FileEntry> getEntries();
52:
53: public abstract void removeEntry(String name);
54:
55: public abstract void putEntry(String name, byte[] contents,
56: boolean modified);
57:
58: public abstract void flush(SystemLogger logger);
59:
60: public abstract boolean containsUpToDate(String name,
61: long sourceTime);
62:
63: public abstract long lastModified();
64:
65: protected static byte[] readFully(InputStream stream, int length)
66: throws IOException {
67: if (length <= 0)
68: length = 0x8000;
69: byte[] buffer = new byte[length];
70: ByteArrayOutputStream outputStream = new ByteArrayOutputStream(
71: length);
72: int count;
73: while ((count = stream.read(buffer)) > 0) {
74: outputStream.write(buffer, 0, count);
75: }
76: return outputStream.toByteArray();
77: }
78:
79: public String toString() {
80: return location.toString();
81: }
82:
83: public int getFileCount() {
84: return getEntries().size();
85: }
86:
87: }
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