001: /***
002: * Retrotranslator: a Java bytecode transformer that translates Java classes
003: * compiled with JDK 5.0 into classes that can be run on JVM 1.4.
004: *
005: * Copyright (c) 2005 - 2008 Taras Puchko
006: * All rights reserved.
007: *
008: * Redistribution and use in source and binary forms, with or without
009: * modification, are permitted provided that the following conditions
010: * are met:
011: * 1. Redistributions of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: * 2. Redistributions in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in the
015: * documentation and/or other materials provided with the distribution.
016: * 3. Neither the name of the copyright holders nor the names of its
017: * contributors may be used to endorse or promote products derived from
018: * this software without specific prior written permission.
019: *
020: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
021: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
022: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
023: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
024: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
025: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
026: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
027: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
028: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
029: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
030: * THE POSSIBILITY OF SUCH DAMAGE.
031: */package net.sf.retrotranslator.transformer;
032:
033: import java.io.*;
034: import java.util.*;
035:
036: /**
037: * @author Taras Puchko
038: */
039: class FolderFileContainer extends FileContainer {
040:
041: private Map<String, FolderFileEntry> entries;
042:
043: public FolderFileContainer(File location) {
044: super (location);
045: }
046:
047: public FolderFileContainer(File location, List<String> fileNames) {
048: super (location);
049: initEntries();
050: for (String fileName : fileNames) {
051: String name = fileName.replace(File.separatorChar, '/');
052: entries.put(name, new FolderFileEntry(name, new File(
053: location, name), false));
054: }
055: }
056:
057: public Collection<? extends FileEntry> getEntries() {
058: if (entries == null) {
059: initEntries();
060: scanFolder(location, location.getPath().length() + 1);
061: }
062: return new ArrayList<FolderFileEntry>(entries.values());
063: }
064:
065: public void removeEntry(String name) {
066: if (entries != null) {
067: FolderFileEntry entry = entries.remove(name);
068: if (entry != null)
069: entry.file.delete();
070: } else {
071: new File(location, name).delete();
072: }
073: }
074:
075: private void scanFolder(File folder, int prefixLength) {
076: for (File file : folder.listFiles()) {
077: String name = file.getPath().substring(prefixLength)
078: .replace(File.separatorChar, '/');
079: if (file.isDirectory()) {
080: scanFolder(file, prefixLength);
081: } else {
082: entries.put(name,
083: new FolderFileEntry(name, file, false));
084: }
085: }
086: }
087:
088: public void putEntry(String name, byte[] contents, boolean modified) {
089: initEntries();
090: File file = new File(location, name);
091: entries.put(name, new FolderFileEntry(name, file, modified));
092: file.getParentFile().mkdirs();
093: try {
094: FileOutputStream stream = new FileOutputStream(file);
095: try {
096: stream.write(contents);
097: } finally {
098: stream.close();
099: }
100: } catch (IOException e) {
101: throw new RuntimeException(e);
102: }
103: }
104:
105: private void initEntries() {
106: if (entries == null) {
107: entries = new LinkedHashMap<String, FolderFileEntry>();
108: }
109: }
110:
111: public void flush(SystemLogger logger) {
112: initEntries();
113: }
114:
115: public boolean containsUpToDate(String name, long sourceTime) {
116: if (sourceTime == 0)
117: return false;
118: long targetTime = new File(location, name).lastModified();
119: return targetTime != 0 && targetTime > sourceTime;
120: }
121:
122: public long lastModified() {
123: long result = 0;
124: for (FileEntry entry : getEntries()) {
125: result = Math.max(result, entry.lastModified());
126: }
127: return result;
128: }
129:
130: private static class FolderFileEntry extends FileEntry {
131:
132: private File file;
133:
134: public FolderFileEntry(String name, File file, boolean modified) {
135: super (name, modified);
136: this .file = file;
137: }
138:
139: public byte[] getContent() {
140: try {
141: FileInputStream stream = new FileInputStream(file);
142: try {
143: return readFully(stream, (int) file.length());
144: } finally {
145: stream.close();
146: }
147: } catch (IOException e) {
148: throw new RuntimeException(e);
149: }
150: }
151:
152: public long lastModified() {
153: return file.lastModified();
154: }
155: }
156: }
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