IkiWiki/Plugin/osm.pm

   1 #!/usr/bin/perl
   2 # Copyright 2011 Blars Blarson
   3 # Released under GPL version 2
   4
   5 package IkiWiki::Plugin::osm;
   6 use utf8;
   7 use strict;
   8 use warnings;
   9 use IkiWiki 3.0;
  10
  11 sub import {
  12         add_underlay("osm");
  13         hook(type => "getsetup", id => "osm", call => \&getsetup);
  14         hook(type => "format", id => "osm", call => \&format);
  15         hook(type => "preprocess", id => "osm", call => \&preprocess);
  16         hook(type => "preprocess", id => "waypoint", call => \&process_waypoint);
  17         hook(type => "savestate", id => "waypoint", call => \&savestate);
  18         hook(type => "cgi", id => "osm", call => \&cgi);
  19 }
  20
  21 sub getsetup () {
  22         return
  23                 plugin => {
  24                         safe => 1,
  25                         rebuild => 1,
  26                         section => "special-purpose",
  27                 },
  28                 osm_default_zoom => {
  29                         type => "integer",
  30                         example => "15",
  31                         description => "the default zoom when you click on the map link",
  32                         safe => 1,
  33                         rebuild => 1,
  34                 },
  35                 osm_default_icon => {
  36                         type => "string",
  37                         example => "ikiwiki/images/osm.png",
  38                         description => "the icon shown on links and on the main map",
  39                         safe => 0,
  40                         rebuild => 1,
  41                 },
  42                 osm_alt => {
  43                         type => "string",
  44                         example => "",
  45                         description => "the alt tag of links, defaults to empty",
  46                         safe => 0,
  47                         rebuild => 1,
  48                 },
  49                 osm_format => {
  50                         type => "string",
  51                         example => "KML",
  52                         description => "the output format for waypoints, can be KML, GeoJSON or CSV (one or many, comma-separated)",
  53                         safe => 1,
  54                         rebuild => 1,
  55                 },
  56                 osm_tag_default_icon => {
  57                         type => "string",
  58                         example => "icon.png",
  59                         description => "the icon attached to a tag, displayed on the map for tagged pages",
  60                         safe => 0,
  61                         rebuild => 1,
  62                 },
  63                 osm_openlayers_url => {
  64                         type => "string",
  65                         example => "http://www.openlayers.org/api/OpenLayers.js",
  66                         description => "Url for the OpenLayers.js file",
  67                         safe => 0,
  68                         rebuild => 1,
  69                 },
  70
  71 }
  72
  73 sub register_rendered_files {
  74         my $map = shift;
  75         my $page = shift;
  76         my $dest = shift;
  77
  78         if ($page eq $dest) {
  79                 my %formats = get_formats();
  80                 if ($formats{'GeoJSON'}) {
  81                         will_render($page, "$map/pois.json");
  82                 }
  83                 if ($formats{'CSV'}) {
  84                         will_render($page, "$map/pois.txt");
  85                 }
  86                 if ($formats{'KML'}) {
  87                         will_render($page, "$map/pois.kml");
  88                 }
  89         }
  90 }
  91
  92 sub preprocess {
  93         my %params=@_;
  94         my $page = $params{page};
  95         my $dest = $params{destpage};
  96         my $loc = $params{loc}; # sanitized below
  97         my $lat = $params{lat}; # sanitized below
  98         my $lon = $params{lon}; # sanitized below
  99         my $href = $params{href};
 100
 101         my ($width, $height, $float);
 102         $height = scrub($params{'height'} || "300px", $page, $dest); # sanitized here
 103         $width = scrub($params{'width'} || "500px", $page, $dest); # sanitized here
 104         $float = (defined($params{'right'}) && 'right') || (defined($params{'left'}) && 'left'); # sanitized here
 105
 106         my $zoom = scrub($params{'zoom'} // $config{'osm_default_zoom'} // 15, $page, $dest); # sanitized below
 107         my $map;
 108         $map = $params{'map'} || 'map';
 109
 110         $map = scrub($map, $page, $dest); # sanitized here
 111         my $name = scrub($params{'name'} || $map, $page, $dest);
 112
 113         if (defined($lon) || defined($lat) || defined($loc)) {
 114                 ($lon, $lat) = scrub_lonlat($loc, $lon, $lat);
 115         }
 116
 117         if ($zoom !~ /^\d\d?$/ || $zoom < 2 || $zoom > 18) {
 118                 error("Bad zoom");
 119         }
 120
 121         if (! defined $href || ! length $href) {
 122                 $href=IkiWiki::cgiurl(
 123                         do => "osm",
 124                         map => $map,
 125                 );
 126         }
 127
 128         register_rendered_files($map, $page, $dest);
 129
 130         $pagestate{$page}{'osm'}{$map}{'displays'}{$name} = {
 131                 height => $height,
 132                 width => $width,
 133                 float => $float,
 134                 zoom => $zoom,
 135                 fullscreen => 0,
 136                 editable => defined($params{'editable'}),
 137                 lat => $lat,
 138                 lon => $lon,
 139                 href => $href,
 140         };
 141         return "<div id=\"mapdiv-$name\"></div>";
 142 }
 143
 144 sub process_waypoint {
 145         my %params=@_;
 146         my $loc = $params{'loc'}; # sanitized below
 147         my $lat = $params{'lat'}; # sanitized below
 148         my $lon = $params{'lon'}; # sanitized below
 149         my $page = $params{'page'}; # not sanitized?
 150         my $dest = $params{'destpage'}; # not sanitized?
 151         my $hidden = defined($params{'hidden'}); # sanitized here
 152         my ($p) = $page =~ /(?:^|\/)([^\/]+)\/?$/; # shorter page name
 153         my $name = scrub($params{'name'} || $p, $page, $dest); # sanitized here
 154         my $desc = scrub($params{'desc'} || '', $page, $dest); # sanitized here
 155         my $zoom = scrub($params{'zoom'} // $config{'osm_default_zoom'} // 15, $page, $dest); # sanitized below
 156         my $icon = $config{'osm_default_icon'} || "ikiwiki/images/osm.png"; # sanitized: we trust $config
 157         my $map = scrub($params{'map'} || 'map', $page, $dest); # sanitized here
 158         my $alt = $config{'osm_alt'} ? "alt=\"$config{'osm_alt'}\"" : ''; # sanitized: we trust $config
 159         if ($zoom !~ /^\d\d?$/ || $zoom < 2 || $zoom > 18) {
 160                 error("Bad zoom");
 161         }
 162
 163         ($lon, $lat) = scrub_lonlat($loc, $lon, $lat);
 164         if (!defined($lat) || !defined($lon)) {
 165                 error("Must specify lat and lon");
 166         }
 167
 168         my $tag = $params{'tag'};
 169         foreach my $t (keys %{$typedlinks{$page}{'tag'}}) {
 170                 if ($icon = get_tag_icon($t)) {
 171                         $tag = $t;
 172                         last;
 173                 }
 174                 $t =~ s!/$config{'tagbase'}/!!;
 175                 if ($icon = get_tag_icon($t)) {
 176                         $tag = $t;
 177                         last;
 178                 }
 179         }
 180         $icon = urlto($icon, $dest, 1);
 181         $tag = '' unless $tag;
 182         register_rendered_files($map, $page, $dest);
 183         $pagestate{$page}{'osm'}{$map}{'waypoints'}{$name} = {
 184                 page => $page,
 185                 desc => $desc,
 186                 icon => $icon,
 187                 tag => $tag,
 188                 lat => $lat,
 189                 lon => $lon,
 190                 # How to link back to the page from the map, not to be
 191                 # confused with the URL of the map itself sent to the
 192                 # embeded map below. Note: used in generated KML etc file,
 193                 # so must be absolute.
 194                 href => urlto($page),
 195         };
 196
 197         my $mapurl = IkiWiki::cgiurl(
 198                 do => "osm",
 199                 map => $map,
 200                 lat => $lat,
 201                 lon => $lon,
 202                 zoom => $zoom,
 203         );
 204         my $output = '';
 205         if (defined($params{'embed'})) {
 206                 $output .= preprocess(%params,
 207                         href => $mapurl,
 208                 );
 209         }
 210         if (!$hidden) {
 211                 $output .= "<a href=\"$mapurl\"><img class=\"img\" src=\"$icon\" $alt /></a>";
 212         }
 213         return $output;
 214 }
 215
 216 # get the icon from the given tag
 217 sub get_tag_icon($) {
 218         my $tag = shift;
 219         # look for an icon attached to the tag
 220         my $attached = $tag . '/' . $config{'osm_tag_default_icon'};
 221         if (srcfile($attached)) {
 222                 return $attached;
 223         }
 224         else {
 225                 return undef;
 226         }
 227 }
 228
 229 sub scrub_lonlat($$$) {
 230         my ($loc, $lon, $lat) = @_;
 231         if ($loc) {
 232                 if ($loc =~ /^\s*(\-?\d+(?:\.\d*°?|(?:°?|\s)\s*\d+(?:\.\d*\'?|(?:\'|\s)\s*\d+(?:\.\d*)?\"?|\'?)°?)[NS]?)\s*\,?\;?\s*(\-?\d+(?:\.\d*°?|(?:°?|\s)\s*\d+(?:\.\d*\'?|(?:\'|\s)\s*\d+(?:\.\d*)?\"?|\'?)°?)[EW]?)\s*$/) {
 233                         $lat = $1;
 234                         $lon = $2;
 235                 }
 236                 else {
 237                         error("Bad loc");
 238                 }
 239         }
 240         if (defined($lat)) {
 241                 if ($lat =~ /^(\-?)(\d+)(?:(\.\d*)°?|(?:°|\s)\s*(\d+)(?:(\.\d*)\'?|(?:\'|\s)\s*(\d+(?:\.\d*)?\"?)|\'?)|°?)\s*([NS])?\s*$/) {
 242                         $lat = $2 + ($3//0) + ((($4//0) + (($5//0) + (($6//0)/60.)))/60.);
 243                         if (($1 eq '-') || (($7//'') eq 'S')) {
 244                                 $lat = - $lat;
 245                         }
 246                 }
 247                 else {
 248                         error("Bad lat");
 249                 }
 250         }
 251         if (defined($lon)) {
 252                 if ($lon =~ /^(\-?)(\d+)(?:(\.\d*)°?|(?:°|\s)\s*(\d+)(?:(\.\d*)\'?|(?:\'|\s)\s*(\d+(?:\.\d*)?\"?)|\'?)|°?)\s*([EW])?$/) {
 253                         $lon = $2 + ($3//0) + ((($4//0) + (($5//0) + (($6//0)/60.)))/60.);
 254                         if (($1 eq '-') || (($7//'') eq 'W')) {
 255                                 $lon = - $lon;
 256                         }
 257                 }
 258                 else {
 259                         error("Bad lon");
 260                 }
 261         }
 262         if ($lat < -90 || $lat > 90 || $lon < -180 || $lon > 180) {
 263                 error("Location out of range");
 264         }
 265         return ($lon, $lat);
 266 }
 267
 268 sub savestate {
 269         my %waypoints = ();
 270         my %linestrings = ();
 271
 272         foreach my $page (keys %pagestate) {
 273                 if (exists $pagestate{$page}{'osm'}) {
 274                         foreach my $map (keys %{$pagestate{$page}{'osm'}}) {
 275                                 foreach my $name (keys %{$pagestate{$page}{'osm'}{$map}{'waypoints'}}) {
 276                                         debug("found waypoint $name");
 277                                         $waypoints{$map}{$name} = $pagestate{$page}{'osm'}{$map}{'waypoints'}{$name};
 278                                 }
 279                         }
 280                 }
 281         }
 282
 283         foreach my $page (keys %pagestate) {
 284                 if (exists $pagestate{$page}{'osm'}) {
 285                         foreach my $map (keys %{$pagestate{$page}{'osm'}}) {
 286                                 # examine the links on this page
 287                                 foreach my $name (keys %{$pagestate{$page}{'osm'}{$map}{'waypoints'}}) {
 288                                         if (exists $links{$page}) {
 289                                                 foreach my $otherpage (@{$links{$page}}) {
 290                                                         if (exists $waypoints{$map}{$otherpage}) {
 291                                                                 push(@{$linestrings{$map}}, [
 292                                                                         [ $waypoints{$map}{$name}{'lon'}, $waypoints{$map}{$name}{'lat'} ],
 293                                                                         [ $waypoints{$map}{$otherpage}{'lon'}, $waypoints{$map}{$otherpage}{'lat'} ]
 294                                                                 ]);
 295                                                         }
 296                                                 }
 297                                         }
 298                                 }
 299                         }
 300                         # clear the state, it will be regenerated on the next parse
 301                         # the idea here is to clear up removed waypoints...
 302                         $pagestate{$page}{'osm'} = ();
 303                 }
 304         }
 305
 306         my %formats = get_formats();
 307         if ($formats{'GeoJSON'}) {
 308                 writejson(\%waypoints, \%linestrings);
 309         }
 310         if ($formats{'CSV'}) {
 311                 writecsvs(\%waypoints, \%linestrings);
 312         }
 313         if ($formats{'KML'}) {
 314                 writekml(\%waypoints, \%linestrings);
 315         }
 316 }
 317
 318 sub writejson($;$) {
 319         my %waypoints = %{$_[0]};
 320         my %linestrings = %{$_[1]};
 321         eval q{use JSON};
 322         error $@ if $@;
 323         foreach my $map (keys %waypoints) {
 324                 my %geojson = ( "type" => "FeatureCollection", "features" => []);
 325                 foreach my $name (keys %{$waypoints{$map}}) {
 326                         my %marker = ( "type" => "Feature",
 327                                 "geometry" => { "type" => "Point", "coordinates" => [ $waypoints{$map}{$name}{'lon'}, $waypoints{$map}{$name}{'lat'} ] },
 328                                 "properties" => $waypoints{$map}{$name} );
 329                         push @{$geojson{'features'}}, \%marker;
 330                 }
 331                 foreach my $linestring (@{$linestrings{$map}}) {
 332                         my %json  = ( "type" => "Feature",
 333                                 "geometry" => { "type" => "LineString", "coordinates" => $linestring });
 334                         push @{$geojson{'features'}}, \%json;
 335                 }
 336                 writefile("pois.json", $config{destdir} . "/$map", to_json(\%geojson));
 337         }
 338 }
 339
 340 sub writekml($;$) {
 341         my %waypoints = %{$_[0]};
 342         my %linestrings = %{$_[1]};
 343         eval q{use XML::Writer};
 344         error $@ if $@;
 345         foreach my $map (keys %waypoints) {
 346                 my $output;
 347                 my $writer = XML::Writer->new( OUTPUT => \$output,
 348                         DATA_MODE => 1, ENCODING => 'UTF-8');
 349                 $writer->xmlDecl();
 350                 $writer->startTag("kml", "xmlns" => "http://www.opengis.net/kml/2.2");
 351
 352                 # first pass: get the icons
 353                 foreach my $name (keys %{$waypoints{$map}}) {
 354                         my %options = %{$waypoints{$map}{$name}};
 355                         $writer->startTag("Style", id => $options{tag});
 356                         $writer->startTag("IconStyle");
 357                         $writer->startTag("Icon");
 358                         $writer->startTag("href");
 359                         $writer->characters($options{icon});
 360                         $writer->endTag();
 361                         $writer->endTag();
 362                         $writer->endTag();
 363                         $writer->endTag();
 364                 }
 365
 366                 foreach my $name (keys %{$waypoints{$map}}) {
 367                         my %options = %{$waypoints{$map}{$name}};
 368                         $writer->startTag("Placemark");
 369                         $writer->startTag("name");
 370                         $writer->characters($name);
 371                         $writer->endTag();
 372                         $writer->startTag("styleUrl");
 373                         $writer->characters('#' . $options{tag});
 374                         $writer->endTag();
 375                         #$writer->emptyTag('atom:link', href => $options{href});
 376                         # to make it easier for us as the atom:link parameter is
 377                         # hard to access from javascript
 378                         $writer->startTag('href');
 379                         $writer->characters($options{href});
 380                         $writer->endTag();
 381                         $writer->startTag("description");
 382                         $writer->characters($options{desc});
 383                         $writer->endTag();
 384                         $writer->startTag("Point");
 385                         $writer->startTag("coordinates");
 386                         $writer->characters($options{lon} . "," . $options{lat});
 387                         $writer->endTag();
 388                         $writer->endTag();
 389                         $writer->endTag();
 390                 }
 391
 392                 my $i = 0;
 393                 foreach my $linestring (@{$linestrings{$map}}) {
 394                         $writer->startTag("Placemark");
 395                         $writer->startTag("name");
 396                         $writer->characters("linestring " . $i++);
 397                         $writer->endTag();
 398                         $writer->startTag("LineString");
 399                         $writer->startTag("coordinates");
 400                         my $str = '';
 401                         foreach my $coord (@{$linestring}) {
 402                                 $str .= join(',', @{$coord}) . " \n";
 403                         }
 404                         $writer->characters($str);
 405                         $writer->endTag();
 406                         $writer->endTag();
 407                         $writer->endTag();
 408                 }
 409                 $writer->endTag();
 410                 $writer->end();
 411
 412                 writefile("pois.kml", $config{destdir} . "/$map", $output);
 413         }
 414 }
 415
 416 sub writecsvs($;$) {
 417         my %waypoints = %{$_[0]};
 418         foreach my $map (keys %waypoints) {
 419                 my $poisf = "lat\tlon\ttitle\tdescription\ticon\ticonSize\ticonOffset\n";
 420                 foreach my $name (keys %{$waypoints{$map}}) {
 421                         my %options = %{$waypoints{$map}{$name}};
 422                         my $line =
 423                                 $options{'lat'} . "\t" .
 424                                 $options{'lon'} . "\t" .
 425                                 $name . "\t" .
 426                                 $options{'desc'} . '<br /><a href="' . $options{'page'} . '">' . $name . "</a>\t" .
 427                                 $options{'icon'} . "\n";
 428                         $poisf .= $line;
 429                 }
 430                 writefile("pois.txt", $config{destdir} . "/$map", $poisf);
 431         }
 432 }
 433
 434 # pipe some data through the HTML scrubber
 435 #
 436 # code taken from the meta.pm plugin
 437 sub scrub($$$) {
 438         if (IkiWiki::Plugin::htmlscrubber->can("sanitize")) {
 439                 return IkiWiki::Plugin::htmlscrubber::sanitize(
 440                         content => shift, page => shift, destpage => shift);
 441         }
 442         else {
 443                 return shift;
 444         }
 445 }
 446
 447 # taken from toggle.pm
 448 sub format (@) {
 449         my %params=@_;
 450
 451         if ($params{content}=~m!<div[^>]*id="mapdiv-[^"]*"[^>]*>!g) {
 452                 if (! ($params{content}=~s!</body>!include_javascript($params{page})."</body>"!em)) {
 453                         # no <body> tag, probably in preview mode
 454                         $params{content}=$params{content} . include_javascript($params{page});
 455                 }
 456         }
 457         return $params{content};
 458 }
 459
 460 sub preferred_format() {
 461         if (!defined($config{'osm_format'}) || !$config{'osm_format'}) {
 462                 $config{'osm_format'} = 'KML';
 463         }
 464         my @spl = split(/, */, $config{'osm_format'});
 465         return shift @spl;
 466 }
 467
 468 sub get_formats() {
 469         if (!defined($config{'osm_format'}) || !$config{'osm_format'}) {
 470                 $config{'osm_format'} = 'KML';
 471         }
 472         map { $_ => 1 } split(/, */, $config{'osm_format'});
 473 }
 474
 475 sub include_javascript ($) {
 476         my $page=shift;
 477         my $loader;
 478
 479         if (exists $pagestate{$page}{'osm'}) {
 480                 foreach my $map (keys %{$pagestate{$page}{'osm'}}) {
 481                         foreach my $name (keys %{$pagestate{$page}{'osm'}{$map}{'displays'}}) {
 482                                 $loader .= map_setup_code($map, $name, %{$pagestate{$page}{'osm'}{$map}{'displays'}{$name}});
 483                         }
 484                 }
 485         }
 486         if ($loader) {
 487                 return embed_map_code($page) . "<script type=\"text/javascript\" charset=\"utf-8\">$loader</script>";
 488         }
 489         else {
 490                 return '';
 491         }
 492 }
 493
 494 sub cgi($) {
 495         my $cgi=shift;
 496
 497         return unless defined $cgi->param('do') &&
 498                 $cgi->param("do") eq "osm";
 499
 500         IkiWiki::loadindex();
 501
 502         IkiWiki::decode_cgi_utf8($cgi);
 503
 504         my $map = $cgi->param('map');
 505         if (!defined $map || $map !~ /^[a-z]*$/) {
 506                 error("invalid map parameter");
 507         }
 508
 509         print "Content-Type: text/html\r\n";
 510         print ("\r\n");
 511         print "<html><body>";
 512         print "<div id=\"mapdiv-$map\"></div>";
 513         print embed_map_code();
 514         print "<script type=\"text/javascript\" charset=\"utf-8\">";
 515         print map_setup_code($map, $map,
 516                 lat => "urlParams['lat']",
 517                 lon => "urlParams['lon']",
 518                 zoom => "urlParams['zoom']",
 519                 fullscreen => 1,
 520                 editable => 1,
 521         );
 522         print "</script>";
 523         print "</body></html>";
 524
 525         exit 0;
 526 }
 527
 528 sub embed_map_code(;$) {
 529         my $page=shift;
 530         my $olurl = $config{osm_openlayers_url} || "http://www.openlayers.org/api/OpenLayers.js";
 531         return '<script src="'.$olurl.'" type="text/javascript" charset="utf-8"></script>'.
 532                 '<script src="'.urlto("ikiwiki/osm.js", $page).
 533                 '" type="text/javascript" charset="utf-8"></script>'."\n";
 534 }
 535
 536 sub map_setup_code($;@) {
 537         my $map=shift;
 538         my $name=shift;
 539         my %options=@_;
 540
 541         eval q{use JSON};
 542         error $@ if $@;
 543
 544         $options{'format'} = preferred_format();
 545
 546         my %formats = get_formats();
 547         if ($formats{'GeoJSON'}) {
 548                 $options{'jsonurl'} = urlto($map."/pois.json");
 549         }
 550         if ($formats{'CSV'}) {
 551                 $options{'csvurl'} = urlto($map."/pois.txt");
 552         }
 553         if ($formats{'KML'}) {
 554                 $options{'kmlurl'} = urlto($map."/pois.kml");
 555         }
 556
 557         return "mapsetup('mapdiv-$name', " . to_json(\%options) . ");";
 558 }
 559
 560 1;