From 83b55b7801cbf1c37971eb530ddf9b0f46a11536 Mon Sep 17 00:00:00 2001
From: Kensuke Matsuzaki <zakki@peppermint.jp>
Date: Sun, 25 Mar 2012 17:25:04 -0400
Subject: [PATCH] Add Japanese massages

---
 src/com/gitblit/LuceneExecutor.java |  246 ++++++++++++++++++++++++++----------------------
 1 files changed, 133 insertions(+), 113 deletions(-)

diff --git a/src/com/gitblit/LuceneExecutor.java b/src/com/gitblit/LuceneExecutor.java
index 489d308..cd7074b 100644
--- a/src/com/gitblit/LuceneExecutor.java
+++ b/src/com/gitblit/LuceneExecutor.java
@@ -25,7 +25,6 @@
 import java.text.MessageFormat;
 import java.text.ParseException;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.HashMap;
@@ -138,35 +137,33 @@
 	private final Map<String, IndexSearcher> searchers = new ConcurrentHashMap<String, IndexSearcher>();
 	private final Map<String, IndexWriter> writers = new ConcurrentHashMap<String, IndexWriter>();
 	
-	private final Set<String> excludedExtensions = new TreeSet<String>(Arrays.asList("7z", "arc",
-			"arj", "bin", "bmp", "dll", "doc", "docx", "exe", "gif", "gz", "jar", "jpg", "lib",
-			"lzh", "odg", "pdf", "ppt", "png", "so", "swf", "xcf", "xls", "xlsx", "zip"));
-
+	private final String luceneIgnoreExtensions = "7z arc arj bin bmp dll doc docx exe gif gz jar jpg lib lzh odg odf odt pdf ppt png so swf xcf xls xlsx zip";
+	private Set<String> excludedExtensions;
+	
 	public LuceneExecutor(IStoredSettings settings, File repositoriesFolder) {
 		this.storedSettings = settings;
 		this.repositoriesFolder = repositoriesFolder;
+		String exts = luceneIgnoreExtensions;
+		if (settings != null) {
+			exts = settings.getString(Keys.web.luceneIgnoreExtensions, exts);
+		}
+		excludedExtensions = new TreeSet<String>(StringUtils.getStringsFromValue(exts));
 	}
 
 	/**
-	 * Indicates if the Lucene executor can index repositories.
-	 * 
-	 * @return true if the Lucene executor is ready to index repositories
-	 */
-	public boolean isReady() {
-		return storedSettings.getBoolean(Keys.lucene.enable, false);
-	}
-
-	/**
-	 * Run is executed by the gitblit executor service at whatever frequency
-	 * is specified in the settings.  Because this is called by an executor
-	 * service, calls will queue - i.e. there can never be concurrent execution
-	 * of repository index updates.
+	 * Run is executed by the Gitblit executor service.  Because this is called 
+	 * by an executor service, calls will queue - i.e. there can never be
+	 * concurrent execution of repository index updates.
 	 */
 	@Override
 	public void run() {
-		if (!isReady()) {
+		if (!storedSettings.getBoolean(Keys.web.allowLuceneIndexing, true)) {
+			// Lucene indexing is disabled
 			return;
 		}
+		// reload the excluded extensions
+		String exts = storedSettings.getString(Keys.web.luceneIgnoreExtensions, luceneIgnoreExtensions);
+		excludedExtensions = new TreeSet<String>(StringUtils.getStringsFromValue(exts));
 
 		for (String repositoryName: GitBlit.self().getRepositoryList()) {
 			RepositoryModel model = GitBlit.self().getRepositoryModel(repositoryName);
@@ -188,7 +185,7 @@
 	 * @param repository
 	 *            the repository object
 	 */
-	protected void index(RepositoryModel model, Repository repository) {
+	private void index(RepositoryModel model, Repository repository) {
 		try {
 			if (shouldReindex(repository)) {
 				// (re)build the entire index
@@ -228,7 +225,16 @@
 	 * 
 	 * @param repositoryName
 	 */
-	public void close(String repositoryName) {
+	public synchronized void close(String repositoryName) {
+		try {
+			IndexSearcher searcher = searchers.remove(repositoryName);
+			if (searcher != null) {
+				searcher.getIndexReader().close();
+			}
+		} catch (Exception e) {
+			logger.error("Failed to close index searcher for " + repositoryName, e);
+		}
+		
 		try {
 			IndexWriter writer = writers.remove(repositoryName);
 			if (writer != null) {
@@ -236,23 +242,14 @@
 			}
 		} catch (Exception e) {
 			logger.error("Failed to close index writer for " + repositoryName, e);
-		}
-
-		try {
-			IndexSearcher searcher = searchers.remove(repositoryName);
-			if (searcher != null) {
-				searcher.close();
-			}
-		} catch (Exception e) {
-			logger.error("Failed to close index searcher for " + repositoryName, e);
-		}
+		}		
 	}
 
 	/**
 	 * Close all Lucene indexers.
 	 * 
 	 */
-	public void close() {
+	public synchronized void close() {
 		// close all writers
 		for (String writer : writers.keySet()) {
 			try {
@@ -266,7 +263,7 @@
 		// close all searchers
 		for (String searcher : searchers.keySet()) {
 			try {
-				searchers.get(searcher).close();
+				searchers.get(searcher).getIndexReader().close();
 			} catch (Throwable t) {
 				logger.error("Failed to close Lucene searcher for " + searcher, t);
 			}
@@ -283,18 +280,9 @@
 	 */
 	public boolean deleteIndex(String repositoryName) {
 		try {
-			// remove the repository index writer from the cache and close it
-			IndexWriter writer = writers.remove(repositoryName);
-			if (writer != null) {
-				writer.close();
-				writer = null;
-			}
-			// remove the repository index searcher from the cache and close it
-			IndexSearcher searcher = searchers.remove(repositoryName);
-			if (searcher != null) {
-				searcher.close();
-				searcher = null;
-			}
+			// close any open writer/searcher
+			close(repositoryName);
+
 			// delete the index folder
 			File repositoryFolder = new File(repositoriesFolder, repositoryName);
 			File luceneIndex = new File(repositoryFolder, LUCENE_DIR);
@@ -358,7 +346,7 @@
 	 * @return tree
 	 * @throws IOException
 	 */
-	protected RevTree getTree(final RevWalk walk, final RevCommit commit)
+	private RevTree getTree(final RevWalk walk, final RevCommit commit)
 			throws IOException {
 		final RevTree tree = commit.getTree();
 		if (tree != null) {
@@ -398,7 +386,7 @@
 	 * @param repository
 	 * @return true of the on-disk index format is different than INDEX_VERSION
 	 */
-	protected boolean shouldReindex(Repository repository) {
+	private boolean shouldReindex(Repository repository) {
 		try {
 			FileBasedConfig config = getConfig(repository);
 			config.load();
@@ -420,7 +408,7 @@
 	 * @return IndexResult
 	 */
 	public IndexResult reindex(RepositoryModel model, Repository repository) {
-		IndexResult result = new IndexResult();
+		IndexResult result = new IndexResult();		
 		if (!deleteIndex(model.name)) {
 			return result;
 		}
@@ -553,7 +541,7 @@
 						// index the blob content
 						if (StringUtils.isEmpty(ext) || !excludedExtensions.contains(ext)) {							
 							ObjectLoader ldr = repository.open(blobId, Constants.OBJ_BLOB);
-							InputStream in = ldr.openStream();							
+							InputStream in = ldr.openStream();						
 							int n;
 							while ((n = in.read(tmp)) > 0) {
 								os.write(tmp, 0, n);
@@ -615,8 +603,8 @@
 			// commit all changes and reset the searcher
 			config.setInt(CONF_INDEX, null, CONF_VERSION, INDEX_VERSION);
 			config.save();
-			resetIndexSearcher(model.name);
 			writer.commit();
+			resetIndexSearcher(model.name);
 			result.success();
 		} catch (Exception e) {
 			logger.error("Exception while reindexing " + model.name, e);
@@ -645,7 +633,7 @@
 			IndexWriter writer = getIndexWriter(repositoryName);
 			for (PathChangeModel path : changedPaths) {
 				// delete the indexed blob
-				deleteBlob(repositoryName, branch, path.path);
+				deleteBlob(repositoryName, branch, path.name);
 
 				// re-index the blob
 				if (!ChangeType.DELETE.equals(path.changeType)) {
@@ -678,8 +666,17 @@
 				}
 			}
 			writer.commit();
-
-			Document doc = createDocument(commit, null);
+			
+			// get any annotated commit tags
+			List<String> commitTags = new ArrayList<String>();
+			for (RefModel ref : JGitUtils.getTags(repository, true, -1)) {
+				if (ref.isAnnotatedTag() && ref.getReferencedObjectId().equals(commit.getId())) {
+					commitTags.add(ref.displayName);
+				}
+			}
+			
+			// create and write the Lucene document
+			Document doc = createDocument(commit, commitTags);
 			doc.add(new Field(FIELD_BRANCH, branch, Store.YES, Index.ANALYZED));
 			result.commitCount++;
 			result.success = index(repositoryName, doc);
@@ -757,7 +754,7 @@
 	 * @param repository
 	 * @return IndexResult
 	 */
-	protected IndexResult updateIndex(RepositoryModel model, Repository repository) {
+	private IndexResult updateIndex(RepositoryModel model, Repository repository) {
 		IndexResult result = new IndexResult();
 		try {
 			FileBasedConfig config = getConfig(repository);
@@ -931,8 +928,8 @@
 		try {			
 			IndexWriter writer = getIndexWriter(repositoryName);
 			writer.addDocument(doc);
-			resetIndexSearcher(repositoryName);
 			writer.commit();
+			resetIndexSearcher(repositoryName);
 			return true;
 		} catch (Exception e) {
 			logger.error(MessageFormat.format("Exception while incrementally updating {0} Lucene index", repositoryName), e);
@@ -940,8 +937,10 @@
 		return false;
 	}
 
-	private SearchResult createSearchResult(Document doc, float score) throws ParseException {
+	private SearchResult createSearchResult(Document doc, float score, int hitId, int totalHits) throws ParseException {
 		SearchResult result = new SearchResult();
+		result.hitId = hitId;
+		result.totalHits = totalHits;
 		result.score = score;
 		result.date = DateTools.stringToDate(doc.get(FIELD_DATE));
 		result.summary = doc.get(FIELD_SUMMARY);		
@@ -964,7 +963,7 @@
 	private synchronized void resetIndexSearcher(String repository) throws IOException {
 		IndexSearcher searcher = searchers.remove(repository);
 		if (searcher != null) {
-			searcher.close();
+			searcher.getIndexReader().close();
 		}
 	}
 
@@ -1017,19 +1016,21 @@
 	 * 
 	 * @param text
 	 *            if the text is null or empty, null is returned
-	 * @param maximumHits
-	 *            the maximum number of hits to collect
+	 * @param page
+	 *            the page number to retrieve. page is 1-indexed.
+	 * @param pageSize
+	 *            the number of elements to return for this page
 	 * @param repositories
 	 *            a list of repositories to search. if no repositories are
 	 *            specified null is returned.
 	 * @return a list of SearchResults in order from highest to the lowest score
 	 * 
 	 */
-	public List<SearchResult> search(String text, int maximumHits, List<String> repositories) {
+	public List<SearchResult> search(String text, int page, int pageSize, List<String> repositories) {
 		if (ArrayUtils.isEmpty(repositories)) {
 			return null;
 		}
-		return search(text, maximumHits, repositories.toArray(new String[0]));
+		return search(text, page, pageSize, repositories.toArray(new String[0]));
 	}
 	
 	/**
@@ -1037,15 +1038,17 @@
 	 * 
 	 * @param text
 	 *            if the text is null or empty, null is returned
-	 * @param maximumHits
-	 *            the maximum number of hits to collect
+	 * @param page
+	 *            the page number to retrieve. page is 1-indexed.
+	 * @param pageSize
+	 *            the number of elements to return for this page
 	 * @param repositories
 	 *            a list of repositories to search. if no repositories are
 	 *            specified null is returned.
 	 * @return a list of SearchResults in order from highest to the lowest score
 	 * 
-	 */	
-	public List<SearchResult> search(String text, int maximumHits, String... repositories) {
+	 */
+	public List<SearchResult> search(String text, int page, int pageSize, String... repositories) {
 		if (StringUtils.isEmpty(text)) {
 			return null;
 		}
@@ -1082,14 +1085,15 @@
 				searcher = new IndexSearcher(reader);
 			}
 			Query rewrittenQuery = searcher.rewrite(query);
-			TopScoreDocCollector collector = TopScoreDocCollector.create(maximumHits, true);
+			TopScoreDocCollector collector = TopScoreDocCollector.create(5000, true);
 			searcher.search(rewrittenQuery, collector);
-			ScoreDoc[] hits = collector.topDocs().scoreDocs;
+			int offset = Math.max(0, (page - 1) * pageSize);
+			ScoreDoc[] hits = collector.topDocs(offset, pageSize).scoreDocs;
+			int totalHits = collector.getTotalHits();
 			for (int i = 0; i < hits.length; i++) {
 				int docId = hits[i].doc;
 				Document doc = searcher.doc(docId);
-				// TODO identify the source index for the doc, then eliminate FIELD_REPOSITORY				
-				SearchResult result = createSearchResult(doc, hits[i].score);
+				SearchResult result = createSearchResult(doc, hits[i].score, offset + i + 1, totalHits);
 				if (repositories.length == 1) {
 					// single repository search
 					result.repository = repositories[0];
@@ -1121,42 +1125,82 @@
 	 */
 	private String getHighlightedFragment(Analyzer analyzer, Query query,
 			String content, SearchResult result) throws IOException, InvalidTokenOffsetsException {
-		content = content == null ? "":StringUtils.escapeForHtml(content, false);
-		
+		if (content == null) {
+			content = "";
+		}		
+
+		int fragmentLength = SearchObjectType.commit == result.type ? 512 : 150;
+
 		QueryScorer scorer = new QueryScorer(query, "content");
-		Fragmenter fragmenter;
-		
-		// TODO improve the fragmenter - hopefully on line breaks
-		if (SearchObjectType.commit == result.type) {
-			fragmenter = new SimpleSpanFragmenter(scorer, 1024); 
-		} else {
-			fragmenter = new SimpleSpanFragmenter(scorer, 150);
-		}
+		Fragmenter fragmenter = new SimpleSpanFragmenter(scorer, fragmentLength); 
 
 		// use an artificial delimiter for the token
-		String termTag = "<!--[";
-		String termTagEnd = "]-->";
+		String termTag = "!!--[";
+		String termTagEnd = "]--!!";
 		SimpleHTMLFormatter formatter = new SimpleHTMLFormatter(termTag, termTagEnd);
 		Highlighter highlighter = new Highlighter(formatter, scorer);		
 		highlighter.setTextFragmenter(fragmenter);
-		
-		String [] fragments = highlighter.getBestFragments(analyzer, "content", content, 5);
+
+		String [] fragments = highlighter.getBestFragments(analyzer, "content", content, 3);
 		if (ArrayUtils.isEmpty(fragments)) {
 			if (SearchObjectType.blob  == result.type) {
 				return "";
 			}
-			return "<pre class=\"text\">" + content + "</pre>";
+			// clip commit message
+			String fragment = content;
+			if (fragment.length() > fragmentLength) {
+				fragment = fragment.substring(0, fragmentLength) + "...";
+			}
+			return "<pre class=\"text\">" + StringUtils.escapeForHtml(fragment, true) + "</pre>";
 		}
+		
+		int contentPos = 0;
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0, len = fragments.length; i < len; i++) {
 			String fragment = fragments[i];
-			
+			String tag = "<pre class=\"text\">";
+
 			// resurrect the raw fragment from removing the artificial delimiters
-			String raw = fragment.replace(termTag, "").replace(termTagEnd, "");			
-			sb.append(getPreTag(result, raw, content));
+			String raw = fragment.replace(termTag, "").replace(termTagEnd, "");
+
+			// determine position of the raw fragment in the content
+			int pos = content.indexOf(raw, contentPos);
+				
+			// restore complete first line of fragment
+			int c = pos;
+			while (c > 0) {
+				c--;
+				if (content.charAt(c) == '\n') {
+					break;
+				}
+			}
+			if (c > 0) {
+				// inject leading chunk of first fragment line
+				fragment = content.substring(c + 1, pos) + fragment;
+			}
+				
+			if (SearchObjectType.blob  == result.type) {
+				// count lines as offset into the content for this fragment
+				int line = Math.max(1, StringUtils.countLines(content.substring(0, pos)));
+				
+				// create fragment tag with line number and language
+				String lang = "";
+				String ext = StringUtils.getFileExtension(result.path).toLowerCase();
+				if (!StringUtils.isEmpty(ext)) {
+					// maintain leading space!
+					lang = " lang-" + ext;
+				}
+				tag = MessageFormat.format("<pre class=\"prettyprint linenums:{0,number,0}{1}\">", line, lang);
+								
+				// update offset into content				
+				contentPos = pos + raw.length() + 1;
+			}
 			
+			sb.append(tag);
+
 			// replace the artificial delimiter with html tags
-			String html = fragment.replace(termTag, "<span class=\"highlight\">").replace(termTagEnd, "</span>");
+			String html = StringUtils.escapeForHtml(fragment, false);
+			html = html.replace(termTag, "<span class=\"highlight\">").replace(termTagEnd, "</span>");
 			sb.append(html);
 			sb.append("</pre>");
 			if (i < len - 1) {
@@ -1164,31 +1208,7 @@
 			}
 		}
 		return sb.toString();
-	}
-	
-	/**
-	 * Returns the appropriate tag for a fragment. Commit messages are visually
-	 * differentiated from blob fragments.
-	 * 
-	 * @param result
-	 * @param fragment
-	 * @param content
-	 * @return an html tag appropriate for the fragment
-	 */
-	private String getPreTag(SearchResult result, String fragment, String content) {
-		String pre = "<pre class=\"text\">";
-		if (SearchObjectType.blob  == result.type) {
-			int line = StringUtils.countLines(content.substring(0, content.indexOf(fragment)));			
-			int lastDot = result.path.lastIndexOf('.');
-			if (lastDot > -1) {
-				String ext = result.path.substring(lastDot + 1).toLowerCase();
-				pre = MessageFormat.format("<pre class=\"prettyprint linenums:{0,number,0} lang-{1}\">", line, ext);	
-			} else {
-				pre = MessageFormat.format("<pre class=\"prettyprint linenums:{0,number,0}\">", line);
-			}
-		}
-		return pre;
-	}
+	}	
 	
 	/**
 	 * Simple class to track the results of an index update. 

--
Gitblit v1.9.1