From f1d2ada42c5e3640656d805155e1bcadb95fd126 Mon Sep 17 00:00:00 2001
From: James Moger <james.moger@gitblit.com>
Date: Wed, 21 Mar 2012 21:02:46 -0400
Subject: [PATCH] Externalized the Lucene ignore extensions

---
 src/com/gitblit/LuceneExecutor.java |  122 ++++++++++++++++++++++++----------------
 1 files changed, 74 insertions(+), 48 deletions(-)

diff --git a/src/com/gitblit/LuceneExecutor.java b/src/com/gitblit/LuceneExecutor.java
index 29a8569..b6df254 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;
@@ -138,10 +137,9 @@
 	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;
@@ -154,6 +152,10 @@
 	 */
 	@Override
 	public void run() {
+		// 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);
 			if (model.hasCommits && !ArrayUtils.isEmpty(model.indexedBranches)) {
@@ -622,7 +624,7 @@
 			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)) {
@@ -655,8 +657,17 @@
 				}
 			}
 			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);
@@ -1105,17 +1116,14 @@
 	 */
 	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 = "<!--[";
@@ -1123,22 +1131,64 @@
 		SimpleHTMLFormatter formatter = new SimpleHTMLFormatter(termTag, termTagEnd);
 		Highlighter highlighter = new Highlighter(formatter, scorer);		
 		highlighter.setTextFragmenter(fragmenter);
-		
+
 		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 = 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>");
 			sb.append(html);
@@ -1148,31 +1198,7 @@
 			}
 		}
 		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