Add a command-line script to export a single calendar to stdout.

scripts/export_calendar.php

@@ -0,0 +1,78 @@
+#!/usr/bin/env php
+<?php
+/**
+ * Script to export a calendar in iCalendar format from the command line.
+ */
+
+if ( $argc < 3 ) {
+
+  $basename = $argv[0];
+  echo <<<USAGE
+Usage:
+
+	$basename davical.example.com /username/calendar/ calendarfile.ics
+
+Where:
+ 'davical.example.com' is the hostname of your DAViCal server.
+ '/username/calendar/' is the (sub-)path of the calendar to be updated.
+
+This script can be used to export whole calendars in iCalendar format to
+stdout.
+
+USAGE;
+  exit(1);
+}
+
+$_SERVER['SERVER_NAME'] = $argv[1];
+$source = $argv[2];
+
+// Change into the web application root directory so includes work.
+$script_file = __FILE__;
+chdir(preg_replace('{/scripts/[^/]+.php$}','/htdocs',$script_file));
+require_once("./always.php");
+
+class FakeSession {
+
+  var $user_no;
+  var $principal_id;
+  var $username;
+  var $email;
+  var $dav_name;
+  var $principal;
+  var $logged_in;
+
+  function __construct($user_no = null) {
+    if ( empty($user_no) ) {
+      $this->user_no = -1;
+      $this->principal_id = -1;
+      $this->logged_in = false;
+      return;
+    }
+
+    $this->user_no = $user_no;
+    $principal = new Principal('user_no',$user_no);
+    // Assign each field in the selected record to the object
+    foreach( $principal AS $k => $v ) {
+      $this->{$k} = $v;
+    }
+    $this->username = $principal->username();
+    $this->principal_id = $principal->principal_id();
+    $this->email = $principal->email();
+    $this->dav_name = $principal->dav_name();
+    $this->principal = $principal;
+    
+    $this->logged_in = true;
+
+  }
+
+  function AllowedTo($do_something) {
+    return $this->logged_in;
+  }
+}
+$session = new FakeSession();
+
+require("caldav-GET-functions.php");
+$calendar = new DAVResource($source);
+
+echo export_iCalendar($calendar); 
+