private void commonInitializer(File file) throws IOException {
File parent = file.getParentFile();
if (parent == null) parent = new File(System.getProperty("user.dir"));
if (!parent.canWrite()) {
String msg = Logging.getMessage("generic.FolderNoWritePermission", parent.getAbsolutePath());
Logging.logger().severe(msg);
throw new IllegalArgumentException(msg);
}
this.targetFile = new RandomAccessFile(file, "rw");
this.theChannel = this.targetFile.getChannel();
}
protected static String propertyToPath(String propName) {
if (propName == null || propName.length() == 0) return null;
String prop = System.getProperty(propName);
if (prop != null) return prop;
if (propName.equalsIgnoreCase("gov.nasa.worldwind.platform.alluser.store"))
return determineAllUserLocation();
if (propName.equalsIgnoreCase("gov.nasa.worldwind.platform.user.store"))
return determineSingleUserLocation();
return null;
}
/**
* Determines and stores the network sites to test for public network connectivity. The sites are
* drawn from the JVM's gov.nasa.worldwind.avkey.NetworkStatusTestSites property ({@link
* AVKey#NETWORK_STATUS_TEST_SITES}). If that property is not defined, the sites are drawn from
* the same property in the World Wind or application configuration file. If the sites are not
* specified there, the set of sites specified in {@link #DEFAULT_NETWORK_TEST_SITES} are used. To
* indicate an empty list in the JVM property or configuration file property, specify an empty
* site list, "".
*/
protected void establishNetworkTestSites() {
String testSites = System.getProperty(AVKey.NETWORK_STATUS_TEST_SITES);
if (testSites == null)
testSites = Configuration.getStringValue(AVKey.NETWORK_STATUS_TEST_SITES);
if (testSites == null) {
this.networkTestSites.addAll(Arrays.asList(DEFAULT_NETWORK_TEST_SITES));
} else {
String[] sites = testSites.split(",");
List<String> actualSites = new ArrayList<String>(sites.length);
for (String site : sites) {
site = WWUtil.removeWhiteSpace(site);
if (!WWUtil.isEmpty(site)) actualSites.add(site);
}
this.setNetworkTestSites(actualSites);
}
}
protected static String getUserHomeDir() {
return System.getProperty("user.home");
}