From d9f00f1d09949ed7bc2f29608b86a99e6e3a9f6c Mon Sep 17 00:00:00 2001
From: Bernhard Messer <bmesser@apache.org>
Date: Thu, 18 Nov 2004 18:54:13 +0000
Subject: [PATCH] show a useful error message if the directory to index doesn't
 exist or isn't readable.

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@150647 13f79535-47bb-0310-9956-ffa450edef68
---
 src/demo/org/apache/lucene/demo/IndexFiles.java | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/demo/org/apache/lucene/demo/IndexFiles.java b/src/demo/org/apache/lucene/demo/IndexFiles.java
index 443ca3ecf9a..1a15fd56d43 100644
--- a/src/demo/org/apache/lucene/demo/IndexFiles.java
+++ b/src/demo/org/apache/lucene/demo/IndexFiles.java
@@ -40,11 +40,17 @@ class IndexFiles {
       System.exit(1);
     }
     
+    final File docDir = new File(args[0]);
+    if (!docDir.exists() || !docDir.canRead()) {
+      System.out.println("Document directory '" +docDir.getAbsolutePath()+ "' does not exist or is not readable, please check the path");
+      System.exit(1);
+    }
+    
     Date start = new Date();
     try {
       IndexWriter writer = new IndexWriter(INDEX_DIR, new StandardAnalyzer(), true);
       System.out.println("Indexing to directory '" +INDEX_DIR+ "'...");
-      indexDocs(writer, new File(args[0]));
+      indexDocs(writer, docDir);
       System.out.println("Optimizing...");
       writer.optimize();
       writer.close();