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Posted to oro-dev@jakarta.apache.org by Michael Davey - Sun UK Support Engineer <mi...@Sun.COM> on 2002/01/29 17:08:44 UTC
special control characters
[I wasn't sure whether to send this to oro-dev or oro-user.
As it deals with the internals of ORO, I have chosen oro-dev.]
Hi all,
In perl, I can do:
perl -e '$a="\a\b\e\f\r\t\v\007\x07"; $a =~ s/\b/\t/; die unless $a ==
"\a\t\e\f\r\t\v\a\a"'
In ORO, I would expect to do:
Perl5Util perl = new Perl5Util();
result = new StringBuffer();
input = new PatternMatcherInput ( "\\a\\b\\e\\f\\r\\t\\v\\007\\x07" );
result = perl.substitute( "s/\\b/\\t/", input);
assertEquals( "\007\t\033\f\r\t\013\007\007", result.toString() );
...without generating an exception (where assertEquals() compares
two strings and generates an exception if they do not match).
I have skimmed through the source to ORO and searched the archives,
but nothing jumped out at me.
I am thinking that my code doesn't work because:
o I am missing something (most likely)
o the design of substitute() is different to what I expect
o this is a limitation of substitute() in the current version of ORO
o ORO delegates escaping of control characters to Java, which is
rather limited in those it will accept
Any pointers would be most welcome.
Cheers,
--
Michael
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