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Parse::RecDescent is used to create parsers, yet there already exists a parser for URIs. URI and extention URI::QueryParam should do the trick.

Update: Here's an example:

use URI qw( ); use URI::QueryParam qw( ); foreach ( '', ' +', ) { my $uri = URI->new($_); my @node_ids = $uri->query_param('node_id'); my @node_titles = $uri->query_param('node'); if ( (@node_ids && @node_titles) || @node_ids > 2 || @node_titles > 2 ) { warn("$uri: Error: Bad uri\n"); } if (!@node_ids && !@node_titles) { warn("$uri: Warning: Unrecognized uri\n"); next; } if (@node_ids) { print("$uri: By Id ($node_ids[0])\n"); } if (@node_titles) { print("$uri: By Title ($node_titles[0])\n"); } }

In reply to Re^3: Parse::RecDescent for parsing URLs by ikegami
in thread Parse::RecDescent for parsing URLs by artist

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