Add special case to WorkingTreeIterator for matching unnormalized symlinks
If there is an unnormalized symbolic link in the index, lie that it matches a normalized link in the working tree. This does not make the case completely invisible everywhere though, but it helps to some degree. Change-Id: I599fb71648c41fa2310049d0e0040b3c9f09386b Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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@ -62,11 +62,13 @@
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import java.util.Collections;
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import java.util.Comparator;
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import org.eclipse.jgit.api.errors.JGitInternalException;
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import org.eclipse.jgit.diff.RawText;
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import org.eclipse.jgit.dircache.DirCache;
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import org.eclipse.jgit.dircache.DirCacheEntry;
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import org.eclipse.jgit.dircache.DirCacheIterator;
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import org.eclipse.jgit.errors.CorruptObjectException;
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import org.eclipse.jgit.errors.MissingObjectException;
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import org.eclipse.jgit.errors.NoWorkTreeException;
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import org.eclipse.jgit.ignore.IgnoreNode;
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import org.eclipse.jgit.ignore.IgnoreRule;
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@ -83,6 +85,7 @@
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import org.eclipse.jgit.submodule.SubmoduleWalk;
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import org.eclipse.jgit.util.FS;
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import org.eclipse.jgit.util.IO;
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import org.eclipse.jgit.util.RawParseUtils;
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import org.eclipse.jgit.util.io.EolCanonicalizingInputStream;
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/**
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@ -808,7 +811,11 @@ else if (!entry.isSmudged())
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* @deprecated Use {@link #isModified(DirCacheEntry, boolean, ObjectReader)}
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*/
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public boolean isModified(DirCacheEntry entry, boolean forceContentCheck) {
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try {
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return isModified(entry, forceContentCheck, null);
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} catch (IOException e) {
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throw new JGitInternalException(e.getMessage(), e);
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}
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}
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/**
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@ -827,10 +834,11 @@ public boolean isModified(DirCacheEntry entry, boolean forceContentCheck) {
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* @param reader
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* access to repository objects if necessary. Should not be null.
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* @return true if content is most likely different.
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* @throws IOException
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* @since 3.3
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*/
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public boolean isModified(DirCacheEntry entry, boolean forceContentCheck,
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ObjectReader reader) {
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ObjectReader reader) throws IOException {
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MetadataDiff diff = compareMetadata(entry);
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switch (diff) {
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case DIFFER_BY_TIMESTAMP:
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@ -848,6 +856,8 @@ public boolean isModified(DirCacheEntry entry, boolean forceContentCheck,
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case EQUAL:
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return false;
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case DIFFER_BY_METADATA:
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if (mode == FileMode.SYMLINK.getBits())
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return contentCheck(entry, reader);
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return true;
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default:
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throw new IllegalStateException(MessageFormat.format(
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@ -891,8 +901,10 @@ public FileMode getIndexFileMode(final DirCacheIterator indexIter) {
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* acccess to repository data if necessary
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* @return <code>true</code> if the content doesn't match,
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* <code>false</code> if it matches
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* @throws IOException
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*/
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private boolean contentCheck(DirCacheEntry entry, ObjectReader reader) {
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private boolean contentCheck(DirCacheEntry entry, ObjectReader reader)
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throws IOException {
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if (getEntryObjectId().equals(entry.getObjectId())) {
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// Content has not changed
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@ -908,6 +920,9 @@ private boolean contentCheck(DirCacheEntry entry, ObjectReader reader) {
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return false;
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} else {
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if (mode == FileMode.SYMLINK.getBits())
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return !new File(readContentAsString(current()))
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.equals(new File(readContentAsString(entry)));
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// Content differs: that's a real change, perhaps
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if (reader == null) // deprecated use, do no further checks
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return true;
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@ -956,6 +971,21 @@ private boolean contentCheck(DirCacheEntry entry, ObjectReader reader) {
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}
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}
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private String readContentAsString(DirCacheEntry entry)
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throws MissingObjectException, IOException {
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ObjectLoader open = repository.open(entry.getObjectId());
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byte[] cachedBytes = open.getCachedBytes();
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return RawParseUtils.decode(cachedBytes);
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}
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private static String readContentAsString(Entry entry) throws IOException {
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long length = entry.getLength();
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byte[] content = new byte[(int) length];
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InputStream is = entry.openInputStream();
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IO.readFully(is, content, 0, (int) length);
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return RawParseUtils.decode(content);
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}
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private long computeLength(InputStream in) throws IOException {
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// Since we only care about the length, use skip. The stream
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// may be able to more efficiently wade through its data.
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