/**
* Returns true if the browser is available, ie mdfind command finds it.
*
* @param logger AbstractLogger
* @return boolean
*/
public boolean isBrowserAvailable(StandardUnixBrowser browser, AbstractLogger logger) {
boolean isAvailable = false;
try {
Process process =
Runtime.getRuntime().exec(new String[] {"mdfind", browser.getBrowserApplicationName()});
InputStream errStream = process.getErrorStream();
InputStream inStream = process.getInputStream();
BufferedReader errIn = new BufferedReader(new InputStreamReader(errStream));
BufferedReader in = new BufferedReader(new InputStreamReader(inStream));
String temp;
StringBuffer whichOutput = new StringBuffer();
while ((temp = in.readLine()) != null) {
// Searching with spotlight (mdfind) will find more than just the app sometimes
if (temp.indexOf(browser.getBrowserApplicationName()) > -1) {
whichOutput.append(temp);
}
}
StringBuffer whichErrOutput = new StringBuffer();
while ((temp = errIn.readLine()) != null) {
whichErrOutput.append(temp);
}
in.close();
errIn.close();
if (whichOutput.length() > 0) {
logger.debug(whichOutput.toString());
// very weak test but should be enough since the Open -a applicationname works very well
isAvailable = true;
}
if (whichErrOutput.length() > 0) {
logger.debug(whichErrOutput.toString());
}
} catch (IOException ex) {
logger.error("io error executing which command", ex);
}
return isAvailable;
}
/**
* Uses the which command to find out which browsers are available. The available browsers are put
* into the unixBrowsers map using displayName => StandardUnixBrowser mappings.
*
* @todo what do we do if there are no browsers available?
* @throws BrowserLaunchingInitializingException
*/
public void initialize() throws BrowserLaunchingInitializingException {
try {
URL configUrl = getClass().getResource(configFileName);
if (configUrl == null) {
throw new BrowserLaunchingInitializingException(
"unable to find config file: " + configFileName);
}
StringBuffer potentialBrowserNames = new StringBuffer();
Properties configProps = new Properties();
configProps.load(configUrl.openStream());
String sepChar = configProps.getProperty(PROP_KEY_DELIMITER);
Iterator keysIter = configProps.keySet().iterator();
while (keysIter.hasNext()) {
String key = (String) keysIter.next();
if (key.startsWith(PROP_KEY_BROWSER_PREFIX)) {
StandardUnixBrowser browser =
new StandardUnixBrowser(sepChar, configProps.getProperty(key));
if (this.isBrowserAvailable(browser, logger)) {
unixBrowsers.put(browser.getBrowserDisplayName(), browser);
} else {
if (potentialBrowserNames.length() > 0) {
potentialBrowserNames.append("; ");
}
potentialBrowserNames.append(browser.getBrowserDisplayName());
}
}
}
if (unixBrowsers.size() == 0) {
// no browser installed
throw new BrowserLaunchingInitializingException(
"one of the supported browsers must be installed: " + potentialBrowserNames);
}
logger.info(unixBrowsers.keySet().toString());
unixBrowsers = Collections.unmodifiableMap(unixBrowsers);
} catch (IOException ioex) {
throw new BrowserLaunchingInitializingException(ioex);
}
}
