Parsing var2={$var1.desc} like property

[Jose Ortuno]

Hi All,

What is the easiest way to parse the following properties information:

## My properties file
var1=c:/temp
var2={$var1}/subdir/test
var3=something/{$var2}/etc
�

Is there any helper API to accomplish this or I still have to load the properties and pars them programmatically.

Thanks in advance.

JL

[Ulf Dittmer]

That depends a good deal on what the purpose of the parsing is. If you want to extract the {...} sections and replace the variables, then that might be accomplished by using regular expressions.
[ August 25, 2005: Message edited by: Ulf Dittmer ]

[Jose Ortuno]

OK,

I am gonna review reg. exp. to eval & replace {$varname} by the value.

Thanks for writting..!!

[Stan James]

See if Properties or PropertyResourceBundle do it for you.

[Choon-Chern Lim]

With a slight modification to your .properties file,

var1=c:/temp
var2={0}/subdir/test/{1}/test/{2}/data
var3=something/{0}/etc

======================

  
public static String getMessage(ResourceBundle rb, String key, Object[] arr) throws Exception {
String str = rb.getString(key);
 
for (int i = 0; i < arr.length; ++i) {
str = str.replaceFirst("\\{" + i + "\\}", arr[i].toString());
}
 
return str;
}
 

In fact, if you are doing web apps, you may want to consider using something like Struts because it has capabilities to grab the value with up to 4 parameters I think, ie: you can be lazy and use the built in API rather than write it yourself.

[Jose Ortuno]

Thanks, a lot..!