From 17d95a647aba8c37d9ac34d97e4eed729aa46f67 Mon Sep 17 00:00:00 2001
From: Naseer Ahmed <naseer.ahmed@gmail.com>
Date: Tue, 20 Aug 2013 17:28:51 -0700
Subject: [PATCH] HistoryGuru: Skip history creation for defined directories

If a project has an .opengrok_skip_history file, skip creating
it's historycache

Fixes #652
---
 OpenGrok                                              | 3 +++
 README.txt                                            | 5 +++++
 src/org/opensolaris/opengrok/history/HistoryGuru.java | 9 +++++++++
 src/org/opensolaris/opengrok/index/IgnoredNames.java  | 1 +
 4 files changed, 18 insertions(+)

diff --git a/OpenGrok b/OpenGrok
index 6dd6300abb5..6f9951dcd9e 100755
--- a/OpenGrok
+++ b/OpenGrok
@@ -212,6 +212,9 @@ DefaultInstanceConfiguration()
 
     # OPTIONAL: Ignore these patterns as names of files or directories
     #IGNORE_PATTERNS="-i dummy"
+    # To ignore skipping just the history cache creation for a particular
+    # directory and all of it's subdirectories, touch an empty
+    # .opengrok_skip_history file at the root of that directory
 
     # OPTIONAL: Enable Projects
     #           (Every directory in SRC_ROOT is considered a separate project)
diff --git a/README.txt b/README.txt
index eeeead6441b..6c659ebdd6a 100644
--- a/README.txt
+++ b/README.txt
@@ -117,6 +117,11 @@ by OpenGrok.
 
 Note that OpenGrok ignores symbolic links.
 
+If you want to skip indexing the history of a particular directory
+(and all of it's subdirectories), you can touch .opengrok_skip_history at the root
+of that directory
+
+
 4.2 Using Opengrok wrapper script to create indexes
 ---------------------------------------------------
 
diff --git a/src/org/opensolaris/opengrok/history/HistoryGuru.java b/src/org/opensolaris/opengrok/history/HistoryGuru.java
index 1a913ddcdb6..ef931025cc6 100644
--- a/src/org/opensolaris/opengrok/history/HistoryGuru.java
+++ b/src/org/opensolaris/opengrok/history/HistoryGuru.java
@@ -304,6 +304,15 @@ private void addRepositories(File[] files, Collection<RepositoryInfo> repos,
      */
     private void addRepositories(File[] files, Collection<RepositoryInfo> repos,
             IgnoredNames ignoredNames, boolean recursiveSearch, int depth) {
+        for (File file : files) {
+            Repository repository = null;
+            if (file.getName().equals(".opengrok_skip_history")) {
+                log.log(Level.INFO, "Skipping history cache creation for "
+                        + file.getParentFile().getAbsolutePath()
+                        + " and it's subdirectories");
+                return;
+            }
+        }
         for (File file : files) {
             Repository repository = null;
             try {
diff --git a/src/org/opensolaris/opengrok/index/IgnoredNames.java b/src/org/opensolaris/opengrok/index/IgnoredNames.java
index 6cd1308ad52..e21fe3f5a79 100644
--- a/src/org/opensolaris/opengrok/index/IgnoredNames.java
+++ b/src/org/opensolaris/opengrok/index/IgnoredNames.java
@@ -73,6 +73,7 @@ public final class IgnoredNames extends Filter {
         ".sln",
         ".vsmdi",
         ".dll",
+        ".opengrok_skip_history",
     };
 
     public IgnoredNames() {