I am currently upgrading our intranet Wiki installation to 1.21 (yes, we are
one version behind), and I have faced the problem with deprecated message
functions, as outlined at
mediawiki.org<http://www.mediawiki.org/wiki/Manual:Messages_API#Deprecated_wfMsg.2A_functions>.
For instance:
Instead of:
wfMsg( 'key' );
Do:
wfMessage( 'key' )->text();
The problem of course is that the parametrized messages can have arbitrary
parameters which can be themselves function calls, making simple regexp
substitution infeasible. Well, I figured out that Perl can be used to solve
this problem, because Perl allows arbitrary recursive regexps, which are
conveniently accessible via the Regexp::Common module. Something like this does
the trick:
use Regexp::Common;
# Convert 'wfMsg->(...)' to 'wfMessage(...)->text()'
sub fix_wfMsg ($) {
(my $string = shift) =~
s/wfMsg\s*($RE{balanced}{-parens=>'()'})/wfMessage$1->text()/g;
return $string;
}
This method would take the string you provide (should be the entire file
contents, to account for multi-line wfMsg calls), and do the appropriate string
substitution to replace the deprecated call with the correct one, accounting
for nested recursive parentheses. As far as I can tell, the only thing it can
get wrong in unbalanced parentheses in comments, e.g. if your line ends in '//
unbalanced paren (' type of comment.
I hope this helps someone.
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