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This may not be all that robust, but it is better than square one...
#!/usr/bin/perl -w use strict; use Parse::RecDescent; my $grammar = join( '', <DATA> ); my $parser = Parse::RecDescent->new( $grammar ) or die "Error: Bad grammar\n"; my $text =<< "SUB_STDIN"; A nicely [[spaced]] link. A poorly[[spaced]]link. Another poorly..[[spaced]]..link. A harder problem [spaced] link. Yet harder still..]]spaced[[..link. The real problem is [[spaced]] followed by ]] or [[ link. SUB_STDIN my $results = $parser->startrule( $text ) or die "Error: Bad text\n"; __DATA__ startrule: <skip:''> bit(s) bit: eol | word | space | token | punct eol: /\n[ \t]*/ {print "<newline>\n" } space: /[ \t]+/ {print "< >" } word: /[\w\']+/ {print "<word: $item[1]>" } punct: /[^\w\s\[\]]+/ {print "<punct: $item[1]>" } | /(?<!\[)\[(?!\[)/ {print "<punct: $item[1]>" } | /(?<!\])\](?!\])/ {print "<punct: $item[1]>" } | /(?<!\[\[)\]\]/ {print "<punct: $item[1]>" } | /(?<!\]\])\[\[/ {print "<punct: $item[1]>" } token: link link: /\[\[(.+?)\]\]/ {print "<link: $item[1]>" }
Notice: new test cases for bracket as 'punct'.

--hsm

"Never try to teach a pig to sing...it wastes your time and it annoys the pig."

In reply to Re: Re: Re: Parse::RecDescent Grammar Fun by hsmyers
in thread Parse::RecDescent Grammar Fun by ichimunki

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