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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/java/util/zip/ZipEntry.java (1 of 18352 files). Show all

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java/pkg/java/util/zip/ZipEntry.java+327−0
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1+/*
2+ * Copyright (c) 1995, 2011, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package java.util.zip;
27+
28+import java.util.Date;
29+
30+/**
31+ * This class is used to represent a ZIP file entry.
32+ *
33+ * @author David Connelly
34+ */
35+public
36+class ZipEntry implements ZipConstants, Cloneable {
37+ String name; // entry name
38+ long time = -1; // modification time (in DOS time)
39+ long crc = -1; // crc-32 of entry data
40+ long size = -1; // uncompressed size of entry data
41+ long csize = -1; // compressed size of entry data
42+ int method = -1; // compression method
43+ int flag = 0; // general purpose flag
44+ byte[] extra; // optional extra field data for entry
45+ String comment; // optional comment string for entry
46+
47+ /**
48+ * Compression method for uncompressed entries.
49+ */
50+ public static final int STORED = 0;
51+
52+ /**
53+ * Compression method for compressed (deflated) entries.
54+ */
55+ public static final int DEFLATED = 8;
56+
57+ /**
58+ * Creates a new zip entry with the specified name.
59+ *
60+ * @param name the entry name
61+ * @exception NullPointerException if the entry name is null
62+ * @exception IllegalArgumentException if the entry name is longer than
63+ * 0xFFFF bytes
64+ */
65+ public ZipEntry(String name) {
66+ if (name == null) {
67+ throw new NullPointerException();
68+ }
69+ if (name.length() > 0xFFFF) {
70+ throw new IllegalArgumentException("entry name too long");
71+ }
72+ this.name = name;
73+ }
74+
75+ /**
76+ * Creates a new zip entry with fields taken from the specified
77+ * zip entry.
78+ * @param e a zip Entry object
79+ */
80+ public ZipEntry(ZipEntry e) {
81+ name = e.name;
82+ time = e.time;
83+ crc = e.crc;
84+ size = e.size;
85+ csize = e.csize;
86+ method = e.method;
87+ flag = e.flag;
88+ extra = e.extra;
89+ comment = e.comment;
90+ }
91+
92+ /*
93+ * Creates a new un-initialized zip entry
94+ */
95+ ZipEntry() {}
96+
97+ /**
98+ * Returns the name of the entry.
99+ * @return the name of the entry
100+ */
101+ public String getName() {
102+ return name;
103+ }
104+
105+ /**
106+ * Sets the modification time of the entry.
107+ * @param time the entry modification time in number of milliseconds
108+ * since the epoch
109+ * @see #getTime()
110+ */
111+ public void setTime(long time) {
112+ this.time = javaToDosTime(time);
113+ }
114+
115+ /**
116+ * Returns the modification time of the entry, or -1 if not specified.
117+ * @return the modification time of the entry, or -1 if not specified
118+ * @see #setTime(long)
119+ */
120+ public long getTime() {
121+ return time != -1 ? dosToJavaTime(time) : -1;
122+ }
123+
124+ /**
125+ * Sets the uncompressed size of the entry data.
126+ * @param size the uncompressed size in bytes
127+ * @exception IllegalArgumentException if the specified size is less
128+ * than 0, is greater than 0xFFFFFFFF when
129+ * <a href="package-summary.html#zip64">ZIP64 format</a> is not supported,
130+ * or is less than 0 when ZIP64 is supported
131+ * @see #getSize()
132+ */
133+ public void setSize(long size) {
134+ if (size < 0) {
135+ throw new IllegalArgumentException("invalid entry size");
136+ }
137+ this.size = size;
138+ }
139+
140+ /**
141+ * Returns the uncompressed size of the entry data, or -1 if not known.
142+ * @return the uncompressed size of the entry data, or -1 if not known
143+ * @see #setSize(long)
144+ */
145+ public long getSize() {
146+ return size;
147+ }
148+
149+ /**
150+ * Returns the size of the compressed entry data, or -1 if not known.
151+ * In the case of a stored entry, the compressed size will be the same
152+ * as the uncompressed size of the entry.
153+ * @return the size of the compressed entry data, or -1 if not known
154+ * @see #setCompressedSize(long)
155+ */
156+ public long getCompressedSize() {
157+ return csize;
158+ }
159+
160+ /**
161+ * Sets the size of the compressed entry data.
162+ * @param csize the compressed size to set to
163+ * @see #getCompressedSize()
164+ */
165+ public void setCompressedSize(long csize) {
166+ this.csize = csize;
167+ }
168+
169+ /**
170+ * Sets the CRC-32 checksum of the uncompressed entry data.
171+ * @param crc the CRC-32 value
172+ * @exception IllegalArgumentException if the specified CRC-32 value is
173+ * less than 0 or greater than 0xFFFFFFFF
174+ * @see #getCrc()
175+ */
176+ public void setCrc(long crc) {
177+ if (crc < 0 || crc > 0xFFFFFFFFL) {
178+ throw new IllegalArgumentException("invalid entry crc-32");
179+ }
180+ this.crc = crc;
181+ }
182+
183+ /**
184+ * Returns the CRC-32 checksum of the uncompressed entry data, or -1 if
185+ * not known.
186+ * @return the CRC-32 checksum of the uncompressed entry data, or -1 if
187+ * not known
188+ * @see #setCrc(long)
189+ */
190+ public long getCrc() {
191+ return crc;
192+ }
193+
194+ /**
195+ * Sets the compression method for the entry.
196+ * @param method the compression method, either STORED or DEFLATED
197+ * @exception IllegalArgumentException if the specified compression
198+ * method is invalid
199+ * @see #getMethod()
200+ */
201+ public void setMethod(int method) {
202+ if (method != STORED && method != DEFLATED) {
203+ throw new IllegalArgumentException("invalid compression method");
204+ }
205+ this.method = method;
206+ }
207+
208+ /**
209+ * Returns the compression method of the entry, or -1 if not specified.
210+ * @return the compression method of the entry, or -1 if not specified
211+ * @see #setMethod(int)
212+ */
213+ public int getMethod() {
214+ return method;
215+ }
216+
217+ /**
218+ * Sets the optional extra field data for the entry.
219+ * @param extra the extra field data bytes
220+ * @exception IllegalArgumentException if the length of the specified
221+ * extra field data is greater than 0xFFFF bytes
222+ * @see #getExtra()
223+ */
224+ public void setExtra(byte[] extra) {
225+ if (extra != null && extra.length > 0xFFFF) {
226+ throw new IllegalArgumentException("invalid extra field length");
227+ }
228+ this.extra = extra;
229+ }
230+
231+ /**
232+ * Returns the extra field data for the entry, or null if none.
233+ * @return the extra field data for the entry, or null if none
234+ * @see #setExtra(byte[])
235+ */
236+ public byte[] getExtra() {
237+ return extra;
238+ }
239+
240+ /**
241+ * Sets the optional comment string for the entry.
242+ *
243+ * <p>ZIP entry comments have maximum length of 0xffff. If the length of the
244+ * specified comment string is greater than 0xFFFF bytes after encoding, only
245+ * the first 0xFFFF bytes are output to the ZIP file entry.
246+ *
247+ * @param comment the comment string
248+ *
249+ * @see #getComment()
250+ */
251+ public void setComment(String comment) {
252+ this.comment = comment;
253+ }
254+
255+ /**
256+ * Returns the comment string for the entry, or null if none.
257+ * @return the comment string for the entry, or null if none
258+ * @see #setComment(String)
259+ */
260+ public String getComment() {
261+ return comment;
262+ }
263+
264+ /**
265+ * Returns true if this is a directory entry. A directory entry is
266+ * defined to be one whose name ends with a '/'.
267+ * @return true if this is a directory entry
268+ */
269+ public boolean isDirectory() {
270+ return name.endsWith("/");
271+ }
272+
273+ /**
274+ * Returns a string representation of the ZIP entry.
275+ */
276+ public String toString() {
277+ return getName();
278+ }
279+
280+ /*
281+ * Converts DOS time to Java time (number of milliseconds since epoch).
282+ */
283+ private static long dosToJavaTime(long dtime) {
284+ Date d = new Date((int)(((dtime >> 25) & 0x7f) + 80),
285+ (int)(((dtime >> 21) & 0x0f) - 1),
286+ (int)((dtime >> 16) & 0x1f),
287+ (int)((dtime >> 11) & 0x1f),
288+ (int)((dtime >> 5) & 0x3f),
289+ (int)((dtime << 1) & 0x3e));
290+ return d.getTime();
291+ }
292+
293+ /*
294+ * Converts Java time to DOS time.
295+ */
296+ private static long javaToDosTime(long time) {
297+ Date d = new Date(time);
298+ int year = d.getYear() + 1900;
299+ if (year < 1980) {
300+ return (1 << 21) | (1 << 16);
301+ }
302+ return (year - 1980) << 25 | (d.getMonth() + 1) << 21 |
303+ d.getDate() << 16 | d.getHours() << 11 | d.getMinutes() << 5 |
304+ d.getSeconds() >> 1;
305+ }
306+
307+ /**
308+ * Returns the hash code value for this entry.
309+ */
310+ public int hashCode() {
311+ return name.hashCode();
312+ }
313+
314+ /**
315+ * Returns a copy of this entry.
316+ */
317+ public Object clone() {
318+ try {
319+ ZipEntry e = (ZipEntry)super.clone();
320+ e.extra = (extra == null) ? null : extra.clone();
321+ return e;
322+ } catch (CloneNotSupportedException e) {
323+ // This should never happen, since we are Cloneable
324+ throw new InternalError();
325+ }
326+ }
327+}