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package Koha::Template::Plugin::EscapeURI; |
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# Copyright Prosentient Systems 2015 |
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# This file is part of Koha. |
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# |
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# Koha is free software; you can redistribute it and/or modify it |
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# under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 3 of the License, or |
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# (at your option) any later version. |
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# |
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# Koha is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with Koha; if not, see <http://www.gnu.org/licenses>. |
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use Modern::Perl; |
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use Template::Plugin::Filter; |
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use base qw( Template::Plugin::Filter ); |
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#This plugin is based on the original uri filter from version 2.26 of Template::Filters |
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our $UNSAFE_SPEC = { |
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RFC2732 => q{A-Za-z0-9\-_.!~*'()}, |
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RFC3986 => q{A-Za-z0-9\-\._~"}, #This is actually a regression as per https://github.com/abw/Template2/issues/13 |
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TRUE_RFC3986 => q{A-Za-z0-9\-\._~}, #http://tools.ietf.org/html/rfc3986#section-2.3 |
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}; |
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our $UNSAFE_CHARS = $UNSAFE_SPEC->{ TRUE_RFC3986 }; |
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our $URI_REGEX; |
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our $URI_ESCAPES; |
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sub init { |
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my $self = shift; |
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my $name = $self->{ _CONFIG }->{ name } || 'escape_uri'; |
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#Install a named filter so that we can use "| escape_uri" instead of "| $EscapeURI" |
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$self->install_filter($name); |
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return $self; |
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} |
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sub uri_escapes { |
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return { |
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map { ( chr($_), sprintf("%%%02X", $_) ) } (0..255), |
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}; |
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} |
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sub filter { |
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my ( $self, $text, $args, $config ) = @_; |
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return "" unless $text; |
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$URI_REGEX ||= qr/([^$UNSAFE_CHARS])/; |
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$URI_ESCAPES ||= uri_escapes(); |
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if ($] >= 5.008 && utf8::is_utf8($text)) { |
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utf8::encode($text); |
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} |
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$text =~ s/$URI_REGEX/$URI_ESCAPES->{$1}/eg; |
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return $text; |
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} |
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1; |