/usr/share/perl5/URI/Template.pm is in liburi-template-perl 0.15-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 | package URI::Template;
use strict;
use warnings;
our $VERSION = '0.15';
use URI;
use URI::Escape qw(uri_escape_utf8);
use Unicode::Normalize;
use overload '""' => \&template;
=head1 NAME
URI::Template - Object for handling URI templates
=head1 SYNOPSIS
use URI::Template;
my $template = URI::Template->new( 'http://example.com/{x}' );
my $uri = $template->process( x => 'y' );
# uri is a URI object with value 'http://example.com/y'
=head1 DESCRIPTION
This is an initial attempt to provide a wrapper around URI templates
as described at http://www.ietf.org/internet-drafts/draft-gregorio-uritemplate-03.txt
=head1 INSTALLATION
perl Makefile.PL
make
make test
make install
=head1 METHODS
=head2 new( $template )
Creates a new L<URI::Template> instance with the template passed in
as the first parameter.
=cut
sub new {
my $class = shift;
my $templ = shift || die 'No template provided';
my $self = bless { template => $templ, _vars => {} } => $class;
$self->_study;
return $self;
}
sub _study {
my ($self) = @_;
my @hunks = grep { defined && length } split /(\{.+?\})/, $self->template;
for (@hunks) {
next unless /^\{(.+?)\}$/;
$_ = $self->_compile_expansion($1);
}
$self->{studied} = \@hunks;
}
sub _op_gen_join {
my ($self, $exp) = @_;
return sub {
my ($var) = @_;
my @pairs;
for my $keypair (@{ $exp->{vars} }) {
my $key = $keypair->[ 0 ];
my $val = $keypair->[ 1 ]->( $var );
next if !exists $var->{$key} && $val eq '';
Carp::croak "invalid variable ($key) supplied to join operator"
if ref $var->{$key};
push @pairs, $key . '=' . $val;
}
return join $exp->{arg}, @pairs;
};
}
sub _op_gen_opt {
my ($self, $exp) = @_;
Carp::croak "-opt accepts exactly one argument" if @{ $exp->{vars} } != 1;
my $value = $exp->{arg};
my $varname = $exp->{vars}->[0]->[0];
return sub {
my ($var) = @_;
return '' unless exists $var->{$varname} and defined $var->{$varname};
return '' if ref $var->{$varname} and not @{ $var->{$varname} };
return $value;
};
}
sub _op_gen_neg {
my ($self, $exp) = @_;
Carp::croak "-neg accepts exactly one argument" if @{ $exp->{vars} } != 1;
my $value = $exp->{arg};
my $varname = $exp->{vars}->[0]->[0];
return sub {
my ($var) = @_;
return $value unless exists $var->{$varname} && defined $var->{$varname};
return $value if ref $var->{$varname} && ! @{ $var->{$varname} };
return '';
};
}
sub _op_gen_prefix {
my ($self, $exp) = @_;
Carp::croak "-prefix accepts exactly one argument" if @{$exp->{vars}} != 1;
my $prefix = $exp->{arg};
my $name = $exp->{vars}->[0]->[0];
return sub {
my ($var) = @_;
return '' unless exists $var->{$name} && defined $var->{$name};
my $array = ref $var->{$name} ? $var->{$name} : [ $var->{$name} ];
return '' unless @$array;
return join '', map { "$prefix$_" } @$array;
};
}
sub _op_gen_suffix {
my ($self, $exp) = @_;
Carp::croak "-suffix accepts exactly one argument" if @{$exp->{vars}} != 1;
my $suffix = $exp->{arg};
my $name = $exp->{vars}->[0]->[0];
return sub {
my ($var) = @_;
return '' unless exists $var->{$name} && defined $var->{$name};
my $array = ref $var->{$name} ? $var->{$name} : [ $var->{$name} ];
return '' unless @$array;
return join '', map { "$_$suffix" } @$array;
};
}
sub _op_gen_list {
my ($self, $exp) = @_;
Carp::croak "-list accepts exactly one argument" if @{$exp->{vars}} != 1;
my $joiner = $exp->{arg};
my $name = $exp->{vars}->[0]->[0];
return sub {
my ($var) = @_;
return '' unless exists $var->{$name} && defined $var->{$name};
Carp::croak "variable ($name) used in -list must be an array reference"
unless ref $var->{$name};
return '' unless my @array = @{ $var->{$name} };
return join $joiner, @array;
};
}
# not op_gen_* as it is not an op from the spec
sub _op_fill_var {
my( $self, $exp ) = @_;
my( $var, $default ) = split( /=/, $exp, 2 );
$default = '' if !defined $default;
return $var, sub {
return exists $_[0]->{$var} ? $_[0]->{$var} : $default;
};
}
sub _compile_expansion {
my ($self, $str) = @_;
if ($str =~ /\A-([a-z]+)\|(.*?)\|(.+)\z/) {
my $exp = { op => $1, arg => $2, vars => [ map { [ $self->_op_fill_var( $_ ) ] } split /,/, $3 ] };
$self->{ _vars }->{ $_->[ 0 ] }++ for @{ $exp->{ vars } };
Carp::croak "unknown expansion operator $exp->{op} in $str"
unless my $code = $self->can("_op_gen_$exp->{op}");
return $self->$code($exp);
}
# remove "optional" flag (for opensearch compatibility)
$str =~ s{\?$}{};
my @var = $self->_op_fill_var( $str );
$self->{ _vars }->{ $var[ 0 ] }++;
return $var[ 1 ];
}
=head2 template
This method returns the original template string.
=cut
sub template {
return $_[ 0 ]->{ template };
}
=head2 variables
Returns an array of unique variable names found in the template. NB: they are returned in random order.
=cut
sub variables {
return keys %{ $_[ 0 ]->{ _vars } };
}
=head2 expansions
This method returns an list of expansions found in the template. Currently,
these are just coderefs. In the future, they will be more interesting.
=cut
sub expansions {
my $self = shift;
return grep { ref } @{ $self->{studied} };
}
=head2 process( \%vars )
Given a list of key-value pairs or an array ref of values (for
positional substitution), it will URI escape the values and
substitute them in to the template. Returns a URI object.
=cut
sub process {
my $self = shift;
return URI->new( $self->process_to_string( @_ ) );
}
=head2 process_to_string( \%vars )
Processes input like the C<process> method, but doesn't inflate the result to a
URI object.
=cut
sub process_to_string {
my $self = shift;
my $arg = @_ == 1 ? $_[0] : { @_ };
my %data;
for my $key (keys %$arg) {
$data{ $key } = ref $arg->{$key}
? [ map { uri_escape_utf8(NFKC($_)) } @{ $arg->{$key} } ]
: uri_escape_utf8(NFKC($arg->{$key}));
}
my $str = '';
for my $hunk (@{ $self->{studied} }) {
if (! ref $hunk) { $str .= $hunk; next; }
$str .= $hunk->(\%data);
}
return $str;
}
=head1 AUTHOR
Brian Cassidy E<lt>bricas@cpan.orgE<gt>
Ricardo SIGNES E<lt>rjbs@cpan.orgE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright 2007-2009 by Brian Cassidy
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
1;
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