Automatically exported from code.google.com/p/planningalerts
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  1. #!/usr/bin/perl -w
  2. use strict;
  3. use HTML::TreeBuilder;
  4. use File::Temp qw(tempfile);
  5. use LWP::Simple;
  6. use POSIX;
  7. use Encode;
  8. use CGI;
  9. use CGI::Carp;
  10. sub sanity_check {
  11. my ($var) = @_;
  12. defined $var or return 0;
  13. $var =~ /^[0-9]+$/ or return 0;
  14. return 1;
  15. }
  16. sub no_results {
  17. my ($y, $m, $d, $reason) = @_;
  18. print <<NIL;
  19. Content-type: text/xml
  20. <?xml version="1.0" encoding="UTF-8"?>
  21. <planning>
  22. <authority_name>London Borough of Redbridge</authority_name>
  23. <authority_short_name>Redbridge</authority_short_name>
  24. <applications>
  25. </applications>
  26. </planning>
  27. NIL
  28. die "$y/$m/$d failed: $reason\n";
  29. }
  30. my $cgi = new CGI;
  31. my $year = $cgi->param("year");
  32. my $month = $cgi->param("month");
  33. my $day = $cgi->param("day");
  34. unless (sanity_check($year) && sanity_check($month) && sanity_check($day)) {
  35. print <<ERROR;
  36. Content-type: text/plain
  37. Need year, month, day parameters
  38. ERROR
  39. exit 0;
  40. }
  41. my $tree = HTML::TreeBuilder->new;
  42. $tree->parse(decode_utf8(get('http://www.redbridge.gov.uk/cms/environment__planning/planning_and_regeneration/planning_dc.aspx') or die "couldn't fetch index page"));
  43. $tree->eof;
  44. my $re = sprintf('Planning Applications Received %d', $year);
  45. my ($year_link) = $tree->look_down(
  46. "_tag", "a",
  47. sub { $_[0]->as_text =~ /$re/i }
  48. );
  49. $year_link or no_results($year, $month, $day, "Cannot find year link");
  50. my $year_absurl = 'http://www.redbridge.gov.uk'.$year_link->attr('href');
  51. my $year_tree = HTML::TreeBuilder->new;
  52. $year_tree->parse(decode_utf8(get($year_absurl) or die "couldn't fetch day page"));
  53. $year_tree->eof;
  54. my $day_re = strftime("Received 0?$day\[a-z]* %B %Y", 0, 0, 0, $day, $month-1, $year-1900);
  55. $day_re =~ s/ +/\\s+/g;
  56. my ($pdf_link) = $year_tree->look_down(
  57. "_tag", "a",
  58. sub { $_[0]->as_text =~ /$day_re/i }
  59. );
  60. $pdf_link or no_results($year, $month, $day, "Cannot find day link");
  61. my $pdf_absurl = 'http://www.redbridge.gov.uk/cms/'.$pdf_link->attr('href');
  62. my ($fh, $filename) = tempfile(SUFFIX => ".pdf");
  63. print $fh get($pdf_absurl);
  64. close($fh);
  65. print "Content-type: text/xml\n\n";
  66. system "./Redbridge.pl", $filename, $pdf_absurl and die "system failed: $|";
  67. unlink $filename or die "cannot unlink temporary file $filename: $!";