| 15 | | |
| 16 | | sub new { |
| 17 | | my $class = shift; |
| 18 | | my $self = {}; |
| 19 | | bless $self, $class; |
| 20 | | |
| 21 | | my %args = @_; |
| 22 | | my $wiki = $args{wiki}; |
| 23 | | |
| 24 | | unless ($wiki && UNIVERSAL::isa($wiki, 'Wiki::Toolkit')) { |
| 25 | | croak 'No Wiki::Toolkit object supplied'; |
| 26 | | } |
| 27 | | |
| 28 | | $self->{wiki} = $wiki; |
| 29 | | |
| 30 | | # Mandatory arguments. |
| 31 | | foreach my $arg (qw/site_name site_url make_node_url atom_link/) { |
| 32 | | croak "No $arg supplied" unless $args{$arg}; |
| 33 | | $self->{$arg} = $args{$arg}; |
| 34 | | } |
| 35 | | |
| 36 | | # Must-supply-one-of arguments |
| 37 | | my %mustoneof = ( 'html_equiv_link' => ['html_equiv_link','recent_changes_link'] ); |
| 38 | | $self->handle_supply_one_of(\%mustoneof,\%args); |
| 39 | | |
| 40 | | # Optional arguments. |
| 41 | | foreach my $arg (qw/site_description software_name software_version software_homepage encoding/) { |
| 42 | | $self->{$arg} = $args{$arg} || ''; |
| 43 | | } |
| 44 | | |
| 45 | | # Supply some defaults, if a blank string isn't what we want |
| 46 | | unless($self->{encoding}) { |
| 47 | | $self->{encoding} = $self->{wiki}->store->{_charset}; |
| 48 | | } |
| 49 | | |
| 50 | | $self->{timestamp_fmt} = $Wiki::Toolkit::Store::Database::timestamp_fmt; |
| 51 | | $self->{utc_offset} = strftime "%z", localtime; |
| 52 | | $self->{utc_offset} =~ s/(..)(..)$/$1:$2/; |
| 53 | | |
| 54 | | # Escape any &'s in the urls |
| 55 | | foreach my $key qw(site_url atom_link) { |
| 56 | | my @ands = ($self->{$key} =~ /(\&.{1,6})/g); |
| 57 | | foreach my $and (@ands) { |
| 58 | | if($and ne "&") { |
| 59 | | my $new_and = $and; |
| 60 | | $new_and =~ s/\&/\&/; |
| 61 | | $self->{$key} =~ s/$and/$new_and/; |
| 62 | | } |
| 63 | | } |
| 64 | | } |
| 65 | | |
| 66 | | $self; |
| 67 | | } |
| 68 | | |
| 69 | | =item <build_feed_start> |
| 70 | | |
| 71 | | Internal method, to build all the stuff that will go at the start of a feed. |
| 72 | | Outputs the feed header, and initial feed info. |
| 73 | | |
| 74 | | =cut |
| 75 | | |
| 76 | | sub build_feed_start { |
| 77 | | my ($self,$atom_timestamp) = @_; |
| 78 | | |
| 79 | | my $generator = ''; |
| 80 | | |
| 81 | | if ($self->{software_name}) { |
| 82 | | $generator = ' <generator'; |
| 83 | | $generator .= ' uri="' . $self->{software_homepage} . '"' if $self->{software_homepage}; |
| 84 | | $generator .= ' version=' . $self->{software_version} . '"' if $self->{software_version}; |
| 85 | | $generator .= ">\n"; |
| 86 | | $generator .= $self->{software_name} . "</generator>\n"; |
| 87 | | } |
| 88 | | |
| 89 | | my $subtitle = $self->{site_description} |
| 90 | | ? '<subtitle>' . $self->{site_description} . "</subtitle>\n" |
| 91 | | : ''; |
| 92 | | |
| 93 | | $atom_timestamp ||= ''; |
| 94 | | |
| 95 | | my $atom = qq{<?xml version="1.0" encoding="} . $self->{encoding} . qq{"?> |
| 96 | | |
| 97 | | <feed |
| 98 | | xmlns = "http://www.w3.org/2005/Atom" |
| 99 | | xmlns:geo = "http://www.w3.org/2003/01/geo/wgs84_pos#" |
| 100 | | xmlns:space = "http://frot.org/space/0.1/" |
| 101 | | > |
| 102 | | |
| 103 | | <link href="} . $self->{site_url} . qq{" /> |
| 104 | | <title>} . $self->{site_name} . qq{</title> |
| 105 | | <link rel="self" href="} . $self->{atom_link} . qq{" /> |
| 106 | | <updated>} . $atom_timestamp . qq{</updated> |
| 107 | | <id>} . $self->{site_url} . qq{</id> |
| 108 | | $subtitle}; |
| 109 | | |
| 110 | | return $atom; |
| 111 | | } |
| 112 | | |
| 113 | | =item <build_feed_end> |
| 114 | | |
| 115 | | Internal method, to build all the stuff that will go at the end of a feed. |
| 116 | | |
| 117 | | =cut |
| 118 | | |
| 119 | | sub build_feed_end { |
| 120 | | my ($self,$feed_timestamp) = @_; |
| 121 | | |
| 122 | | return "</feed>\n"; |
| 123 | | } |
| 124 | | |
| 125 | | =item <generate_node_list_feed> |
| 126 | | |
| 127 | | Generate and return an Atom feed for a list of nodes |
| 128 | | |
| 129 | | =cut |
| 130 | | |
| 131 | | sub generate_node_list_feed { |
| 132 | | my ($self,$atom_timestamp,@nodes) = @_; |
| 133 | | |
| 134 | | my $atom = $self->build_feed_start($atom_timestamp); |
| 135 | | |
| 136 | | my (@urls, @items); |
| 137 | | |
| 138 | | foreach my $node (@nodes) { |
| 139 | | my $node_name = $node->{name}; |
| 140 | | |
| 141 | | my $item_timestamp = $node->{last_modified}; |
| 142 | | |
| 143 | | # Make a Time::Piece object. |
| 144 | | my $time = Time::Piece->strptime($item_timestamp, $self->{timestamp_fmt}); |
| 145 | | |
| 146 | | my $utc_offset = $self->{utc_offset}; |
| 147 | | |
| 148 | | $item_timestamp = $time->strftime( "%Y-%m-%dT%H:%M:%S$utc_offset" ); |
| 149 | | |
| 150 | | my $author = $node->{metadata}{username}[0] || $node->{metadata}{host}[0] || 'Anonymous'; |
| 151 | | my $description = $node->{metadata}{comment}[0] || 'No description given for node'; |
| 152 | | |
| 153 | | $description .= " [$author]" if $author; |
| 154 | | |
| 155 | | my $version = $node->{version}; |
| 156 | | my $status = (1 == $version) ? 'new' : 'updated'; |
| 157 | | |
| 158 | | my $major_change = $node->{metadata}{major_change}[0]; |
| 159 | | $major_change = 1 unless defined $major_change; |
| 160 | | my $importance = $major_change ? 'major' : 'minor'; |
| 161 | | |
| 162 | | my $url = $self->{make_node_url}->($node_name, $version); |
| 163 | | |
| 164 | | # make XML-clean |
| 165 | | my $title = $node_name; |
| 166 | | $title =~ s/&/&/g; |
| 167 | | $title =~ s/</</g; |
| 168 | | $title =~ s/>/>/g; |
| 169 | | |
| 170 | | # Pop the categories into atom:category elements (4.2.2) |
| 171 | | # We can do this because the spec says: |
| 172 | | # "This specification assigns no meaning to the content (if any) |
| 173 | | # of this element." |
| 174 | | # TODO: Decide if we should include the "all categories listing" url |
| 175 | | # as the scheme (URI) attribute? |
| 176 | | my $category_atom = ""; |
| 177 | | if ($node->{metadata}->{category}) { |
| 178 | | foreach my $cat (@{ $node->{metadata}->{category} }) { |
| 179 | | $category_atom .= " <category term=\"$cat\" />\n"; |
| 180 | | } |
| 181 | | } |
| 182 | | |
| 183 | | # Include geospacial data, if we have it |
| 184 | | my $geo_atom = $self->format_geo($node->{metadata}); |
| 185 | | |
| 186 | | # TODO: Find an Atom equivalent of ModWiki, so we can include more info |
| 187 | | |
| 188 | | |
| 189 | | push @items, qq{ |
| 190 | | <entry> |
| 191 | | <title>$title</title> |
| 192 | | <link href="$url" /> |
| 193 | | <id>$url</id> |
| 194 | | <summary>$description</summary> |
| 195 | | <updated>$item_timestamp</updated> |
| 196 | | <author><name>$author</name></author> |
| 197 | | $category_atom |
| 198 | | $geo_atom |
| 199 | | </entry> |
| 200 | | }; |
| 201 | | |
| 202 | | } |
| 203 | | |
| 204 | | $atom .= join('', @items) . "\n"; |
| 205 | | $atom .= $self->build_feed_end($atom_timestamp); |
| 206 | | |
| 207 | | return $atom; |
| 208 | | } |
| 209 | | |
| 210 | | =item <generate_node_name_distance_feed> |
| 211 | | |
| 212 | | Generate a very cut down atom feed, based just on the nodes, their locations |
| 213 | | (if given), and their distance from a reference location (if given). |
| 214 | | |
| 215 | | Typically used on search feeds. |
| 216 | | |
| 217 | | =cut |
| 218 | | |
| 219 | | sub generate_node_name_distance_feed { |
| 220 | | my ($self,$atom_timestamp,@nodes) = @_; |
| 221 | | |
| 222 | | my $atom = $self->build_feed_start($atom_timestamp); |
| 223 | | |
| 224 | | my (@urls, @items); |
| 225 | | |
| 226 | | foreach my $node (@nodes) { |
| 227 | | my $node_name = $node->{name}; |
| 228 | | |
| 229 | | my $url = $self->{make_node_url}->($node_name); |
| 230 | | |
| 231 | | # make XML-clean |
| 232 | | my $title = $node_name; |
| 233 | | $title =~ s/&/&/g; |
| 234 | | $title =~ s/</</g; |
| 235 | | $title =~ s/>/>/g; |
| 236 | | |
| 237 | | # What location stuff do we have? |
| 238 | | my $geo_atom = $self->format_geo($node); |
| 239 | | |
| 240 | | push @items, qq{ |
| 241 | | <entry> |
| 242 | | <title>$title</title> |
| 243 | | <link href="$url" /> |
| 244 | | <id>$url</id> |
| 245 | | $geo_atom |
| 246 | | </entry> |
| 247 | | }; |
| 248 | | |
| 249 | | } |
| 250 | | |
| 251 | | $atom .= join('', @items) . "\n"; |
| 252 | | $atom .= $self->build_feed_end($atom_timestamp); |
| 253 | | |
| 254 | | return $atom; |
| 255 | | } |
| 256 | | |
| 257 | | =item B<feed_timestamp> |
| 258 | | |
| 259 | | Generate the timestamp for the Atom, based on the newest node (if available). |
| 260 | | Will return a timestamp for now if no node dates are available |
| 261 | | |
| 262 | | =cut |
| 263 | | |
| 264 | | sub feed_timestamp { |
| 265 | | my ($self, $newest_node) = @_; |
| 266 | | |
| 267 | | my $time; |
| 268 | | if ($newest_node->{last_modified}) { |
| 269 | | $time = Time::Piece->strptime( $newest_node->{last_modified}, $self->{timestamp_fmt} ); |
| 270 | | } else { |
| 271 | | $time = localtime; |
| 272 | | } |
| 273 | | |
| 274 | | my $utc_offset = $self->{utc_offset}; |
| 275 | | |
| 276 | | return $time->strftime( "%Y-%m-%dT%H:%M:%S$utc_offset" ); |
| 277 | | } |
| 278 | | |
| 279 | | |
| 280 | | =item B<parse_feed_timestamp> |
| 281 | | |
| 282 | | Take a feed_timestamp and return a Time::Piece object. |
| 283 | | |
| 284 | | =cut |
| 285 | | |
| 286 | | sub parse_feed_timestamp { |
| 287 | | my ($self, $feed_timestamp) = @_; |
| 288 | | |
| 289 | | $feed_timestamp = substr($feed_timestamp, 0, -length( $self->{utc_offset})); |
| 290 | | return Time::Piece->strptime( $feed_timestamp, '%Y-%m-%dT%H:%M:%S' ); |
| 291 | | } |
| 292 | | 1; |
| 293 | | |
| 294 | | __END__ |
| | 173 | =cut |
| | 174 | |
| | 175 | sub new { |
| | 176 | my $class = shift; |
| | 177 | my $self = {}; |
| | 178 | bless $self, $class; |
| | 179 | |
| | 180 | my %args = @_; |
| | 181 | my $wiki = $args{wiki}; |
| | 182 | |
| | 183 | unless ($wiki && UNIVERSAL::isa($wiki, 'Wiki::Toolkit')) { |
| | 184 | croak 'No Wiki::Toolkit object supplied'; |
| | 185 | } |
| | 186 | |
| | 187 | $self->{wiki} = $wiki; |
| | 188 | |
| | 189 | # Mandatory arguments. |
| | 190 | foreach my $arg (qw/site_name site_url make_node_url atom_link/) { |
| | 191 | croak "No $arg supplied" unless $args{$arg}; |
| | 192 | $self->{$arg} = $args{$arg}; |
| | 193 | } |
| | 194 | |
| | 195 | # Must-supply-one-of arguments |
| | 196 | my %mustoneof = ( 'html_equiv_link' => ['html_equiv_link','recent_changes_link'] ); |
| | 197 | $self->handle_supply_one_of(\%mustoneof,\%args); |
| | 198 | |
| | 199 | # Optional arguments. |
| | 200 | foreach my $arg (qw/site_description software_name software_version software_homepage encoding/) { |
| | 201 | $self->{$arg} = $args{$arg} || ''; |
| | 202 | } |
| | 203 | |
| | 204 | # Supply some defaults, if a blank string isn't what we want |
| | 205 | unless($self->{encoding}) { |
| | 206 | $self->{encoding} = $self->{wiki}->store->{_charset}; |
| | 207 | } |
| | 208 | |
| | 209 | $self->{timestamp_fmt} = $Wiki::Toolkit::Store::Database::timestamp_fmt; |
| | 210 | $self->{utc_offset} = strftime "%z", localtime; |
| | 211 | $self->{utc_offset} =~ s/(..)(..)$/$1:$2/; |
| | 212 | |
| | 213 | # Escape any &'s in the urls |
| | 214 | foreach my $key qw(site_url atom_link) { |
| | 215 | my @ands = ($self->{$key} =~ /(\&.{1,6})/g); |
| | 216 | foreach my $and (@ands) { |
| | 217 | if($and ne "&") { |
| | 218 | my $new_and = $and; |
| | 219 | $new_and =~ s/\&/\&/; |
| | 220 | $self->{$key} =~ s/$and/$new_and/; |
| | 221 | } |
| | 222 | } |
| | 223 | } |
| | 224 | |
| | 225 | $self; |
| | 226 | } |
| | 227 | |
| | 228 | # Internal method, to build all the stuff that will go at the start of a feed. |
| | 229 | # Outputs the feed header, and initial feed info. |
| | 230 | |
| | 231 | sub build_feed_start { |
| | 232 | my ($self,$atom_timestamp) = @_; |
| | 233 | |
| | 234 | my $generator = ''; |
| | 235 | |
| | 236 | if ($self->{software_name}) { |
| | 237 | $generator = ' <generator'; |
| | 238 | $generator .= ' uri="' . $self->{software_homepage} . '"' if $self->{software_homepage}; |
| | 239 | $generator .= ' version=' . $self->{software_version} . '"' if $self->{software_version}; |
| | 240 | $generator .= ">\n"; |
| | 241 | $generator .= $self->{software_name} . "</generator>\n"; |
| | 242 | } |
| | 243 | |
| | 244 | my $subtitle = $self->{site_description} |
| | 245 | ? '<subtitle>' . $self->{site_description} . "</subtitle>\n" |
| | 246 | : ''; |
| | 247 | |
| | 248 | $atom_timestamp ||= ''; |
| | 249 | |
| | 250 | my $atom = qq{<?xml version="1.0" encoding="} . $self->{encoding} . qq{"?> |
| | 251 | |
| | 252 | <feed |
| | 253 | xmlns = "http://www.w3.org/2005/Atom" |
| | 254 | xmlns:geo = "http://www.w3.org/2003/01/geo/wgs84_pos#" |
| | 255 | xmlns:space = "http://frot.org/space/0.1/" |
| | 256 | > |
| | 257 | |
| | 258 | <link href="} . $self->{site_url} . qq{" /> |
| | 259 | <title>} . $self->{site_name} . qq{</title> |
| | 260 | <link rel="self" href="} . $self->{atom_link} . qq{" /> |
| | 261 | <updated>} . $atom_timestamp . qq{</updated> |
| | 262 | <id>} . $self->{site_url} . qq{</id> |
| | 263 | $subtitle}; |
| | 264 | |
| | 265 | return $atom; |
| | 266 | } |
| | 267 | |
| | 268 | # Internal method, to build all the stuff that will go at the end of a feed. |
| | 269 | |
| | 270 | sub build_feed_end { |
| | 271 | my ($self,$feed_timestamp) = @_; |
| | 272 | |
| | 273 | return "</feed>\n"; |
| | 274 | } |
| | 275 | |
| | 276 | =head2 C<generate_node_list_feed> |
| | 277 | |
| | 278 | Generate and return an Atom feed for a list of nodes |
| | 279 | |
| | 280 | =cut |
| | 281 | |
| | 282 | sub generate_node_list_feed { |
| | 283 | my ($self,$atom_timestamp,@nodes) = @_; |
| | 284 | |
| | 285 | my $atom = $self->build_feed_start($atom_timestamp); |
| | 286 | |
| | 287 | my (@urls, @items); |
| | 288 | |
| | 289 | foreach my $node (@nodes) { |
| | 290 | my $node_name = $node->{name}; |
| | 291 | |
| | 292 | my $item_timestamp = $node->{last_modified}; |
| | 293 | |
| | 294 | # Make a Time::Piece object. |
| | 295 | my $time = Time::Piece->strptime($item_timestamp, $self->{timestamp_fmt}); |
| | 296 | |
| | 297 | my $utc_offset = $self->{utc_offset}; |
| | 298 | |
| | 299 | $item_timestamp = $time->strftime( "%Y-%m-%dT%H:%M:%S$utc_offset" ); |
| | 300 | |
| | 301 | my $author = $node->{metadata}{username}[0] || $node->{metadata}{host}[0] || 'Anonymous'; |
| | 302 | my $description = $node->{metadata}{comment}[0] || 'No description given for node'; |
| | 303 | |
| | 304 | $description .= " [$author]" if $author; |
| | 305 | |
| | 306 | my $version = $node->{version}; |
| | 307 | my $status = (1 == $version) ? 'new' : 'updated'; |
| | 308 | |
| | 309 | my $major_change = $node->{metadata}{major_change}[0]; |
| | 310 | $major_change = 1 unless defined $major_change; |
| | 311 | my $importance = $major_change ? 'major' : 'minor'; |
| | 312 | |
| | 313 | my $url = $self->{make_node_url}->($node_name, $version); |
| | 314 | |
| | 315 | # make XML-clean |
| | 316 | my $title = $node_name; |
| | 317 | $title =~ s/&/&/g; |
| | 318 | $title =~ s/</</g; |
| | 319 | $title =~ s/>/>/g; |
| | 320 | |
| | 321 | # Pop the categories into atom:category elements (4.2.2) |
| | 322 | # We can do this because the spec says: |
| | 323 | # "This specification assigns no meaning to the content (if any) |
| | 324 | # of this element." |
| | 325 | # TODO: Decide if we should include the "all categories listing" url |
| | 326 | # as the scheme (URI) attribute? |
| | 327 | my $category_atom = ""; |
| | 328 | if ($node->{metadata}->{category}) { |
| | 329 | foreach my $cat (@{ $node->{metadata}->{category} }) { |
| | 330 | $category_atom .= " <category term=\"$cat\" />\n"; |
| | 331 | } |
| | 332 | } |
| | 333 | |
| | 334 | # Include geospacial data, if we have it |
| | 335 | my $geo_atom = $self->format_geo($node->{metadata}); |
| | 336 | |
| | 337 | # TODO: Find an Atom equivalent of ModWiki, so we can include more info |
| | 338 | |
| | 339 | |
| | 340 | push @items, qq{ |
| | 341 | <entry> |
| | 342 | <title>$title</title> |
| | 343 | <link href="$url" /> |
| | 344 | <id>$url</id> |
| | 345 | <summary>$description</summary> |
| | 346 | <updated>$item_timestamp</updated> |
| | 347 | <author><name>$author</name></author> |
| | 348 | $category_atom |
| | 349 | $geo_atom |
| | 350 | </entry> |
| | 351 | }; |
| | 352 | |
| | 353 | } |
| | 354 | |
| | 355 | $atom .= join('', @items) . "\n"; |
| | 356 | $atom .= $self->build_feed_end($atom_timestamp); |
| | 357 | |
| | 358 | return $atom; |
| | 359 | } |
| | 360 | |
| | 361 | =head2 C<generate_node_name_distance_feed> |
| | 362 | |
| | 363 | Generate a very cut down atom feed, based just on the nodes, their locations |
| | 364 | (if given), and their distance from a reference location (if given). |
| | 365 | |
| | 366 | Typically used on search feeds. |
| | 367 | |
| | 368 | =cut |
| | 369 | |
| | 370 | sub generate_node_name_distance_feed { |
| | 371 | my ($self,$atom_timestamp,@nodes) = @_; |
| | 372 | |
| | 373 | my $atom = $self->build_feed_start($atom_timestamp); |
| | 374 | |
| | 375 | my (@urls, @items); |
| | 376 | |
| | 377 | foreach my $node (@nodes) { |
| | 378 | my $node_name = $node->{name}; |
| | 379 | |
| | 380 | my $url = $self->{make_node_url}->($node_name); |
| | 381 | |
| | 382 | # make XML-clean |
| | 383 | my $title = $node_name; |
| | 384 | $title =~ s/&/&/g; |
| | 385 | $title =~ s/</</g; |
| | 386 | $title =~ s/>/>/g; |
| | 387 | |
| | 388 | # What location stuff do we have? |
| | 389 | my $geo_atom = $self->format_geo($node); |
| | 390 | |
| | 391 | push @items, qq{ |
| | 392 | <entry> |
| | 393 | <title>$title</title> |
| | 394 | <link href="$url" /> |
| | 395 | <id>$url</id> |
| | 396 | $geo_atom |
| | 397 | </entry> |
| | 398 | }; |
| | 399 | |
| | 400 | } |
| | 401 | |
| | 402 | $atom .= join('', @items) . "\n"; |
| | 403 | $atom .= $self->build_feed_end($atom_timestamp); |
| | 404 | |
| | 405 | return $atom; |
| | 406 | } |
| | 407 | |