east herts

trunk/cgi-bin/EastHerts.cgi

@@ -0,0 +1,122 @@
+#!/usr/local/bin/perl
+
+use strict;
+use warnings;
+
+use CGI qw(:cgi);
+use HTML::TreeBuilder;
+use LWP::UserAgent;
+use XML::Writer;
+
+# The master URLs for the East Herts planning search
+our $SearchURL = "http://e-services.eastherts.gov.uk/swiftlg/apas/run/WPHAPPCRITERIA";
+our $InfoURL = "http://e-services.eastherts.gov.uk/swiftlg/apas/run/WPHAPPDETAIL.DisplayUrl?theApnID=";
+our $CommentURL = "http://e-services.eastherts.gov.uk/swiftlg/apas/run/wphmakerep.displayURL?ApnID=";
+
+# We're a CGI script...
+my $query = CGI->new();
+
+# Get the date to fetch
+my $date = $query->param("day") . "/" . $query->param("month") . "/" . $query->param("year");
+
+# Construct an LWP user agent
+our $UA = LWP::UserAgent->new(env_proxy => 1);
+
+# Do the search
+my $page = do_post($SearchURL,
+                   {"REGFROMDATE.MAINBODY.WPACIS.1." => $date,
+                    "REGTODATE.MAINBODY.WPACIS.1." => $date,
+                    "SEARCHBUTTON.MAINBODY.WPACIS.1." => "Search"});
+
+# Output an HTTP response header
+print $query->header(-type  => "text/xml");
+
+# Create an XML output stream
+my $Writer = XML::Writer->new(DATA_MODE => 1);
+
+# Output the XML header data
+$Writer->xmlDecl("UTF-8");
+$Writer->startTag("planning");
+$Writer->dataElement("authority_name", "East Herts Council");
+$Writer->dataElement("authority_short_name", "East Herts");
+$Writer->startTag("applications");
+
+# Output any applications on the first page
+output_applications($page);
+
+# Loop over any additional results pages
+foreach my $link ($page->look_down("_tag" => "a", "href" => qr/^WPHAPPSEARCHRES\.displayResultsURL/))
+{
+    # Fetch this page...
+    $page = do_get(URI->new_abs($link->attr("href"), $SearchURL));
+
+    # ...and output the applications from it
+    output_applications($page);
+}
+
+# Finish off XML output
+$Writer->endTag("applications");
+$Writer->endTag("planning");
+$Writer->end();
+
+exit 0;
+
+# Make a GET request
+sub do_get
+{
+    my $response = $UA->get(@_);
+
+    die $response->status_line unless $response->is_success;
+
+    return HTML::TreeBuilder->new_from_content($response->content);
+}
+
+# Make a POST request
+sub do_post
+{
+    my $response = $UA->post(@_);
+
+    die $response->status_line unless $response->is_success;
+
+    return HTML::TreeBuilder->new_from_content($response->content);
+}
+
+# Output applications from a results page
+sub output_applications
+{
+    my $page = shift;
+
+    # Find the result table
+    my $table = $page->look_down("_tag" => "table", "cellspacing" => "2", "cellpadding" => "2");
+
+    # Process each row of the results
+    foreach my $row ($table->look_down("_tag" => "tr"))
+    {
+        my @cells = $row->look_down("_tag" => "td");
+
+        if (@cells >= 3)
+        {
+            my $reference = $cells[0]->as_trimmed_text;
+            my $description = $cells[1]->as_trimmed_text;
+            my $address = $cells[2]->as_trimmed_text;
+            my $postcode;
+
+            if ($address =~ /\s+([A-Z]+\d+\s+\d+[A-Z]+)$/)
+            {
+                $postcode = $1;
+            }
+
+            $Writer->startTag("application");
+            $Writer->dataElement("council_reference", $reference);
+            $Writer->dataElement("address", $address);
+            $Writer->dataElement("postcode", $postcode);
+            $Writer->dataElement("description", $description);
+            $Writer->dataElement("info_url", $InfoURL . $reference);
+            $Writer->dataElement("comment_url", $CommentURL . $reference);
+            $Writer->dataElement("date_received", $date);
+            $Writer->endTag("application");
+        }
+    }
+
+    return;
+}