Re: [FMPP] how to get a substring out of a variable or file name?

[Daniel D. <dd...@fr...>]

Saturday, July 19, 2003, 4:49:26 PM, Ralf Hauser wrote:

> Daniel,
>
> From a filename_en.jsp, I would like to extract the two language indicating
> characters.
> http://www.freemarker.org/docs/dgui_template_exp.html#dgui_template_exp_stri
> ngop_sub doesn't really help if I probably have to count from the right or
> do some regular expression pattern matching.

For regular expression operations, see: ref_builtins_string.html

> I thought
> ${pp.sourceFile[-6..-5]}
> might be it, but I got
> <<     [fmpp] Caused by: java.lang.StringIndexOutOfBoundsException: String
> index out of range: -6>
>
> Any thoughts, how I might best do this?

Use the string length...

${pp.sourceFile[pp.sourceFile?length-6..pp.sourceFile?length-5]}

If it is needed often, then define a function for it:

<#function getLocalCode s>
  <#return s[s?length-6..s?length-5]>
</#function>

...

${getLocaleCode(pp.sourceFile)}

-- 
Best regards,
 Daniel Dekany