From b5aefab37c25d5da114bb78768defc79fc709e29 Mon Sep 17 00:00:00 2001
From: tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Thu, 12 Jun 2008 08:19:49 +0000
Subject: A new check for the existence of a configuration has been
 implemented. The extraction is skipped if any files or folders would be
 overwritten. Files like log- or temp-files may exist and do not prevent the
 deployment of the default configuration.

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@283 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../java/at/gv/egiz/pdfas/utils/ConfigUtils.java   | 47 ++++++++++++++++++++--
 1 file changed, 44 insertions(+), 3 deletions(-)

(limited to 'src/main/java/at/gv/egiz/pdfas/utils/ConfigUtils.java')

diff --git a/src/main/java/at/gv/egiz/pdfas/utils/ConfigUtils.java b/src/main/java/at/gv/egiz/pdfas/utils/ConfigUtils.java
index 627e611..a7bca3f 100644
--- a/src/main/java/at/gv/egiz/pdfas/utils/ConfigUtils.java
+++ b/src/main/java/at/gv/egiz/pdfas/utils/ConfigUtils.java
@@ -71,9 +71,11 @@ public final class ConfigUtils {
     */
    private static boolean deployFromZIP(String destination, boolean overwriteExisting) throws ConfigUtilsException {
       try {
-         File destinationFolder = new File(destination);
-         if (destinationFolder.exists() && !overwriteExisting) {
-            return false;
+         if (!overwriteExisting) {
+            if (configurationAlreadyExists(destination)) {
+               logger_.debug("There is at least one file or folder that would be overwritten at destination path \"" + destination + "\". Skipping extraction.");
+               return false;
+            }
          }
          InputStream in = ConfigUtils.class.getClassLoader().getResourceAsStream(Constants.DEFAULT_CONFIGURATION_ZIP_RESOURCE);
          if (in == null) {
@@ -81,6 +83,7 @@ public final class ConfigUtils {
          }
          ZipInputStream zis = new ZipInputStream(in);
          ZipEntry ze;
+         File destinationFolder = new File(destination);
          destinationFolder.mkdirs();
          logger_.debug("Extracting default configuration to folder \"" + destinationFolder.getCanonicalPath() + "\".");
          while ((ze = zis.getNextEntry()) != null) {
@@ -102,6 +105,44 @@ public final class ConfigUtils {
       }
    }
    
+   private static boolean configurationAlreadyExists(String destination) throws ConfigUtilsException, IOException {
+      logger_.debug("Checking configuration \"" + destination + "\" already exists (resp. if there are any directories or files that would be overwritten).");
+      File destinationFolder = new File(destination);
+      if (destinationFolder == null || !destinationFolder.exists()) {
+         return false;
+      }
+      InputStream in = ConfigUtils.class.getClassLoader().getResourceAsStream(Constants.DEFAULT_CONFIGURATION_ZIP_RESOURCE);
+      if (in == null) {
+         throw new ConfigUtilsException("Unable to find default configuration resource \"" + Constants.DEFAULT_CONFIGURATION_ZIP_RESOURCE + "\".");
+      }
+      ZipInputStream zis = new ZipInputStream(in);
+      ZipEntry ze;
+      while ((ze = zis.getNextEntry()) != null) {
+         if (ze.isDirectory()) {
+            File newFolder = new File(destinationFolder, ze.getName());
+            logger_.debug("Checking if folder \"" + newFolder.getPath() + "\" already exists.");
+            if (newFolder.exists()) {
+               logger_.debug("YES !");
+               return true;
+            } else {
+               logger_.debug("no");
+            }
+         } else {
+            File destFile = new File(destinationFolder, ze.getName());
+            logger_.trace("Checking if file \"" + destFile.getName() + "\" already exists.");
+            if (destFile.exists()) {
+               logger_.trace("YES !");
+               return true;
+            } else {
+               logger_.trace("no");
+            }
+         }
+         zis.closeEntry();
+      }
+      zis.close();
+      return false;
+   }
+   
    /**
     * Deploys the default configuration to the given destination folder.
     * 
-- 
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