unify file quoting in SCCS/Mercurial (#4565)

opengrok-indexer/src/main/java/org/opengrok/indexer/history/MercurialHistoryParser.java

@@ -18,7 +18,7 @@
  */
 
 /*
- * Copyright (c) 2006, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2024, Oracle and/or its affiliates. All rights reserved.
  * Portions Copyright (c) 2017, Chris Fraire <[email protected]>.
  */
 package org.opengrok.indexer.history;
@@ -81,13 +81,12 @@ void parse(File file, String sinceRevision, String tillRevision, Integer numComm
             Executor executor = repository.getHistoryLogExecutor(file, sinceRevision, tillRevision, false,
                     numCommits);
             int status = executor.exec(true, this);
-
             if (status != 0) {
-                throw new HistoryException("Failed to get history for: \"" + file.getAbsolutePath() +
-                                           "\" Exit code: " + status);
+                throw new HistoryException(String.format("Failed to get history for '%s' (exit status %d)",
+                        file.getAbsolutePath(), status));
             }
         } catch (IOException e) {
-            throw new HistoryException("Failed to get history for: \"" + file.getAbsolutePath() + "\"", e);
+            throw new HistoryException(String.format("Failed to get history for '%s'", file.getAbsolutePath()), e);
         }
 
         // If a changeset to start from is specified, remove that changeset from the list,
@@ -151,7 +150,7 @@ private void removeChangesets(List<RepositoryWithHistoryTraversal.ChangesetInfo>
      * {@link org.opengrok.indexer.history.RepositoryWithHistoryTraversal.ChangesetInfo} elements.
      *
      * @param input The output from the process
-     * @throws java.io.IOException If an error occurs while reading the stream
+     * @throws IOException If an error occurs while reading the stream
      */
     @Override
     public void processStream(InputStream input) throws IOException {
@@ -182,7 +181,7 @@ public void processStream(InputStream input) throws IOException {
             } else if (s.startsWith(MercurialRepository.FILES) && entry != null) {
                 String[] strings = s.split(" ");
                 for (int ii = 1; ii < strings.length; ++ii) {
-                    if (strings[ii].length() > 0) {
+                    if (!strings[ii].isEmpty()) {
                         File f = new File(mydir, strings[ii]);
                         try {
                             String path = env.getPathRelativeToSourceRoot(f);
@@ -221,7 +220,7 @@ public void processStream(InputStream input) throws IOException {
             } else if (s.equals(MercurialRepository.END_OF_ENTRY)
                 && entry != null) {
                     entry = null;
-            } else if (s.length() > 0) {
+            } else if (!s.isEmpty()) {
                 LOGGER.log(Level.WARNING,
                     "Invalid/unexpected output {0} from hg log for repo {1}",
                     new Object[]{s, repository.getDirectoryName()});
@@ -235,10 +234,10 @@ public void processStream(InputStream input) throws IOException {
      * This is to prevent problems if the log message contains one of the
      * prefixes that {@link #processStream(InputStream)} is looking for (bug
      * #405).
-     *
+     * <p>
      * This method is way too tolerant, and won't complain if the line has
      * a different format than expected. It will return weird results, though.
-     *
+     * </p>
      * @param line the XML encoded line
      * @return the decoded description
      */

opengrok-indexer/src/main/java/org/opengrok/indexer/history/SCCSHistoryParser.java

@@ -18,7 +18,7 @@
  */
 
 /*
- * Copyright (c) 2007, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2007, 2024, Oracle and/or its affiliates. All rights reserved.
  */
 package org.opengrok.indexer.history;
 
@@ -68,14 +68,13 @@ History parse(File file) throws HistoryException {
         try {
             return parseFile(file);
         } catch (IOException e) {
-            throw new HistoryException("Failed to get history for " +
-                "\"" + file.getAbsolutePath() + "\":", e);
+            throw new HistoryException(String.format("Failed to get history for '%s'", file.getAbsolutePath()), e);
         } catch (ParseException e) {
-            throw new HistoryException("Failed to parse history for " +
-                "\"" + file.getAbsolutePath() + "\":", e);
+            throw new HistoryException(String.format("Failed to parse history for '%s'", file.getAbsolutePath()), e);
         }
     }
 
+    @Nullable
     private History parseFile(File file) throws IOException, ParseException {
         File f = getSCCSFile(file);
         if (f == null) {
@@ -110,9 +109,9 @@ private History parseFile(File file) throws IOException, ParseException {
      * Read a single line of delta record into the {@link #sccsRecord} member.
      *
      * @return boolean indicating whether there is another record.
-     * @throws java.io.IOException on I/O error
+     * @throws IOException on I/O error
      */
-    private boolean next() throws java.io.IOException {
+    private boolean next() throws IOException {
         sep = true;
         sccsRecord.setLength(0);
         int c;
@@ -189,7 +188,7 @@ private boolean isActive() {
         return active;
     }
 
-    private int read() throws java.io.IOException {
+    private int read() throws IOException {
         int c, d, dt;
         while ((c = in.read()) != -1) {
             switch (c) { //NOPMD