On Tue, May 28, 2013 at 2:08 PM, sebb <[email protected]> wrote:
> On 25 May 2013 18:47, <[email protected]> wrote:
> > Author: bodewig
> > Date: Sat May 25 17:47:00 2013
> > New Revision: 1486348
> >
> > URL: http://svn.apache.org/r1486348
> > Log:
> > provide access to all entries of a given name in ZipFile, COMPRESS-227
>
> -1, see below
>
> > Modified:
> >
> commons/proper/compress/trunk/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java
> >
> commons/proper/compress/trunk/src/test/java/org/apache/commons/compress/archivers/zip/ZipFileTest.java
> >
> > Modified:
> commons/proper/compress/trunk/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java
> > URL:
> http://svn.apache.org/viewvc/commons/proper/compress/trunk/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java?rev=1486348&r1=1486347&r2=1486348&view=diff
> >
> ==============================================================================
> > ---
> commons/proper/compress/trunk/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java
> (original)
> > +++
> commons/proper/compress/trunk/src/main/java/org/apache/commons/compress/archivers/zip/ZipFile.java
> Sat May 25 17:47:00 2013
> > @@ -25,9 +25,12 @@ import java.io.RandomAccessFile;
> > import java.util.Arrays;
> > import java.util.Collections;
> > import java.util.Comparator;
> > +import java.util.Deque;
>
> That requires Java 1.6; Compress currently targets 1.5
>
Well, let's change the requirement to Java 6 for Compress 1.6.
Gary
>
> > import java.util.Enumeration;
> > import java.util.HashMap;
> > -import java.util.LinkedHashMap;
> > +import java.util.Iterator;
> > +import java.util.LinkedList;
> > +import java.util.List;
> > import java.util.Map;
> > import java.util.zip.Inflater;
> > import java.util.zip.InflaterInputStream;
> > @@ -83,17 +86,17 @@ public class ZipFile {
> > private static final int POS_3 = 3;
> >
> > /**
> > - * Maps ZipArchiveEntrys to two longs, recording the offsets of
> > - * the local file headers and the start of entry data.
> > + * List of entries in the order they appear inside the central
> > + * directory.
> > */
> > - private final Map<ZipArchiveEntry, OffsetEntry> entries =
> > - new LinkedHashMap<ZipArchiveEntry, OffsetEntry>(HASH_SIZE);
> > + private final List<ZipArchiveEntry> entries =
> > + new LinkedList<ZipArchiveEntry>();
> >
> > /**
> > - * Maps String to ZipArchiveEntrys, name -> actual entry.
> > + * Maps String to list of ZipArchiveEntrys, name -> actual entries.
> > */
> > - private final Map<String, ZipArchiveEntry> nameMap =
> > - new HashMap<String, ZipArchiveEntry>(HASH_SIZE);
> > + private final Map<String, Deque<ZipArchiveEntry>> nameMap =
> > + new HashMap<String, Deque<ZipArchiveEntry>>(HASH_SIZE);
> >
> > private static final class OffsetEntry {
> > private long headerOffset = -1;
> > @@ -273,7 +276,7 @@ public class ZipFile {
> > * @return all entries as {@link ZipArchiveEntry} instances
> > */
> > public Enumeration<ZipArchiveEntry> getEntries() {
> > - return Collections.enumeration(entries.keySet());
> > + return Collections.enumeration(entries);
> > }
> >
> > /**
> > @@ -287,8 +290,7 @@ public class ZipFile {
> > * @since 1.1
> > */
> > public Enumeration<ZipArchiveEntry> getEntriesInPhysicalOrder() {
> > - ZipArchiveEntry[] allEntries =
> > - entries.keySet().toArray(new ZipArchiveEntry[0]);
> > + ZipArchiveEntry[] allEntries = entries.toArray(new
> ZipArchiveEntry[0]);
> > Arrays.sort(allEntries, OFFSET_COMPARATOR);
> > return Collections.enumeration(Arrays.asList(allEntries));
> > }
> > @@ -296,12 +298,51 @@ public class ZipFile {
> > /**
> > * Returns a named entry - or {@code null} if no entry by
> > * that name exists.
> > + *
> > + * <p>If multiple entries with the same name exist the first entry
> > + * in the archive's central directory by that name is
> > + * returned.</p>
> > + *
> > * @param name name of the entry.
> > * @return the ZipArchiveEntry corresponding to the given name - or
> > * {@code null} if not present.
> > */
> > public ZipArchiveEntry getEntry(String name) {
> > - return nameMap.get(name);
> > + Deque<ZipArchiveEntry> entriesOfThatName = nameMap.get(name);
> > + return entriesOfThatName != null ? entriesOfThatName.getFirst()
> : null;
> > + }
> > +
> > + /**
> > + * Returns all named entries in the same order they appear within
> > + * the archive's central directory.
> > + *
> > + * @param name name of the entry.
> > + * @return the Iterator<ZipArchiveEntry> corresponding to the
> > + * given name
> > + * @since 1.6
> > + */
> > + public Iterator<ZipArchiveEntry> getEntries(String name) {
> > + Deque<ZipArchiveEntry> entriesOfThatName = nameMap.get(name);
> > + return entriesOfThatName != null ? entriesOfThatName.iterator()
> > + : Collections.<ZipArchiveEntry>emptyList().iterator();
> > + }
> > +
> > + /**
> > + * Returns all named entries in the same order their contents
> > + * appear within the archive.
> > + *
> > + * @param name name of the entry.
> > + * @return the Iterator<ZipArchiveEntry> corresponding to the
> > + * given name
> > + * @since 1.6
> > + */
> > + public Iterator<ZipArchiveEntry> getEntriesInPhysicalOrder(String
> name) {
> > + ZipArchiveEntry[] entriesOfThatName = new ZipArchiveEntry[0];
> > + if (nameMap.containsKey(name)) {
> > + entriesOfThatName =
> nameMap.get(name).toArray(entriesOfThatName);
> > + Arrays.sort(entriesOfThatName, OFFSET_COMPARATOR);
> > + }
> > + return Arrays.asList(entriesOfThatName).iterator();
> > }
> >
> > /**
> > @@ -325,10 +366,12 @@ public class ZipFile {
> > */
> > public InputStream getInputStream(ZipArchiveEntry ze)
> > throws IOException, ZipException {
> > - OffsetEntry offsetEntry = entries.get(ze);
> > - if (offsetEntry == null) {
> > + if (!(ze instanceof Entry)) {
> > return null;
> > }
> > + // checked just above
> > + @SuppressWarnings("unchecked") OffsetEntry offsetEntry =
> > + ((Entry) ze).getOffsetEntry();
> > ZipUtil.checkRequestedFeatures(ze);
> > long start = offsetEntry.dataOffset;
> > BoundedInputStream bis =
> > @@ -474,7 +517,8 @@ public class ZipFile {
> > throws IOException {
> > archive.readFully(CFH_BUF);
> > int off = 0;
> > - ZipArchiveEntry ze = new ZipArchiveEntry();
> > + OffsetEntry offset = new OffsetEntry();
> > + Entry ze = new Entry(offset);
> >
> > int versionMadeBy = ZipShort.getValue(CFH_BUF, off);
> > off += SHORT;
> > @@ -529,10 +573,9 @@ public class ZipFile {
> > ze.setName(entryEncoding.decode(fileName), fileName);
> >
> > // LFH offset,
> > - OffsetEntry offset = new OffsetEntry();
> > offset.headerOffset = ZipLong.getValue(CFH_BUF, off);
> > // data offset will be filled later
> > - entries.put(ze, offset);
> > + entries.add(ze);
> >
> > byte[] cdExtraData = new byte[extraLen];
> > archive.readFully(cdExtraData);
> > @@ -851,16 +894,11 @@ public class ZipFile {
> > private void resolveLocalFileHeaderData(Map<ZipArchiveEntry,
> NameAndComment>
> > entriesWithoutUTF8Flag)
> > throws IOException {
> > - // changing the name of a ZipArchiveEntry is going to change
> > - // the hashcode - see COMPRESS-164
> > - // Map needs to be reconstructed in order to keep central
> > - // directory order
> > - Map<ZipArchiveEntry, OffsetEntry> origMap =
> > - new LinkedHashMap<ZipArchiveEntry, OffsetEntry>(entries);
> > - entries.clear();
> > - for (Map.Entry<ZipArchiveEntry, OffsetEntry> ent :
> origMap.entrySet()) {
> > - ZipArchiveEntry ze = ent.getKey();
> > - OffsetEntry offsetEntry = ent.getValue();
> > + for (Iterator<ZipArchiveEntry> it = entries.iterator();
> it.hasNext(); ) {
> > + // entries is filled in populateFromCentralDirectory and
> > + // never modified
> > + @SuppressWarnings("unchecked") Entry ze = (Entry) it.next();
> > + OffsetEntry offsetEntry = ze.getOffsetEntry();
> > long offset = offsetEntry.headerOffset;
> > archive.seek(offset + LFH_OFFSET_FOR_FILENAME_LENGTH);
> > archive.readFully(SHORT_BUF);
> > @@ -883,13 +921,18 @@ public class ZipFile {
> > + SHORT + SHORT + fileNameLen + extraFieldLen;
> >
> > if (entriesWithoutUTF8Flag.containsKey(ze)) {
> > - String orig = ze.getName();
> > NameAndComment nc = entriesWithoutUTF8Flag.get(ze);
> > ZipUtil.setNameAndCommentFromExtraFields(ze, nc.name,
> > nc.comment);
> > }
> > - entries.put(ze, offsetEntry);
> > - nameMap.put(ze.getName(), ze);
> > +
> > + String name = ze.getName();
> > + Deque<ZipArchiveEntry> entriesOfThatName =
> nameMap.get(name);
> > + if (entriesOfThatName == null) {
> > + entriesOfThatName = new LinkedList<ZipArchiveEntry>();
> > + nameMap.put(name, entriesOfThatName);
> > + }
> > + entriesOfThatName.addLast(ze);
> > }
> > }
> >
> > @@ -996,16 +1039,54 @@ public class ZipFile {
> > return 0;
> > }
> >
> > - OffsetEntry off1 = entries.get(e1);
> > - OffsetEntry off2 = entries.get(e2);
> > - if (off1 == null) {
> > + @SuppressWarnings("unchecked") Entry ent1 =
> > + e1 instanceof Entry ? (Entry) e1 : null;
> > + @SuppressWarnings("unchecked") Entry ent2 =
> > + e2 instanceof Entry ? (Entry) e2 : null;
> > + if (ent1 == null) {
> > return 1;
> > }
> > - if (off2 == null) {
> > + if (ent2 == null) {
> > return -1;
> > }
> > - long val = (off1.headerOffset - off2.headerOffset);
> > + long val = (ent1.getOffsetEntry().headerOffset
> > + - ent2.getOffsetEntry().headerOffset);
> > return val == 0 ? 0 : val < 0 ? -1 : +1;
> > }
> > };
> > +
> > + /**
> > + * Extends ZipArchiveEntry to store the offset within the archive.
> > + */
> > + private static class Entry extends ZipArchiveEntry {
> > +
> > + private final OffsetEntry offsetEntry;
> > +
> > + Entry(OffsetEntry offset) {
> > + this.offsetEntry = offset;
> > + }
> > +
> > + OffsetEntry getOffsetEntry() {
> > + return offsetEntry;
> > + }
> > +
> > + @Override
> > + public int hashCode() {
> > + return 3 * super.hashCode()
> > + + (int) (offsetEntry.headerOffset % Integer.MAX_VALUE);
> > + }
> > +
> > + @Override
> > + public boolean equals(Object other) {
> > + if (super.equals(other)) {
> > + // super.equals would return false otherwise
> > + @SuppressWarnings("unchecked") Entry otherEntry =
> (Entry) other;
> > + return offsetEntry.headerOffset
> > + == otherEntry.offsetEntry.headerOffset
> > + && offsetEntry.dataOffset
> > + == otherEntry.offsetEntry.dataOffset;
> > + }
> > + return false;
> > + }
> > + }
> > }
> >
> > Modified:
> commons/proper/compress/trunk/src/test/java/org/apache/commons/compress/archivers/zip/ZipFileTest.java
> > URL:
> http://svn.apache.org/viewvc/commons/proper/compress/trunk/src/test/java/org/apache/commons/compress/archivers/zip/ZipFileTest.java?rev=1486348&r1=1486347&r2=1486348&view=diff
> >
> ==============================================================================
> > ---
> commons/proper/compress/trunk/src/test/java/org/apache/commons/compress/archivers/zip/ZipFileTest.java
> (original)
> > +++
> commons/proper/compress/trunk/src/test/java/org/apache/commons/compress/archivers/zip/ZipFileTest.java
> Sat May 25 17:47:00 2013
> > @@ -27,6 +27,7 @@ import java.io.OutputStream;
> > import java.util.ArrayList;
> > import java.util.Collections;
> > import java.util.Enumeration;
> > +import java.util.Iterator;
> > import java.util.TreeMap;
> > import java.util.zip.ZipEntry;
> >
> > @@ -214,6 +215,12 @@ public class ZipFileTest extends TestCas
> > ZipArchiveEntry ze = zf.getEntry("test1.txt");
> > assertNotNull(ze);
> > assertNotNull(zf.getInputStream(ze));
> > +
> > + int numberOfEntries = 0;
> > + for (Iterator it = zf.getEntries("test1.txt"); it.hasNext();
> it.next()) {
> > + numberOfEntries++;
> > + }
> > + assertEquals(2, numberOfEntries);
> > }
> >
> > /*
> >
> >
>
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