Wrote PH_SH_exporter.js. Related to anschuetz/linuxmuster#1.

* This was actually fun to write :) and I can not let it happen that
  someone converts them manually. And I am linuxmuster.net(t) :)
  "nett" (German) -> nice, kind

PH_SH_exporter.js

@@ -0,0 +1,138 @@
+#!/usr/bin/env nodejs
+/* Info, license and author {{{
+ * @license AGPLv3 <https://www.gnu.org/licenses/agpl-3.0.html>
+ * @author Copyright (C) 2015 Robin Schneider <[email protected]>
+ *
+ * Written for: https://github.com/anschuetz/linuxmuster/issues/1#issuecomment-110888829
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * }}} */
+
+/* Required modules {{{ */
+var opening_hours = require('./opening_hours.js');
+var fs            = require('fs');
+/* }}} */
+
+/* Constants {{{ */
+var nominatiom_object = {
+    'de': {
+        'bw': {"place_id":"44651229","licence":"Data \u00a9 OpenStreetMap contributors, ODbL 1.0. http:\/\/www.openstreetmap.org\/copyright","osm_type":"way","osm_id":"36248375","lat":"49.5400039","lon":"9.7937133","display_name":"K 2847, Lauda-K\u00f6nigshofen, Main-Tauber-Kreis, Regierungsbezirk Stuttgart, Baden-W\u00fcrttemberg, Germany, European Union","address":{"road":"K 2847","city":"Lauda-K\u00f6nigshofen","county":"Main-Tauber-Kreis","state_district":"Regierungsbezirk Stuttgart","state":"Baden-W\u00fcrttemberg","country":"Germany","country_code":"de","continent":"European Union"}
+        },
+    },
+};
+/* }}} */
+
+/* Parameter handling {{{ */
+var optimist = require('optimist')
+	.usage('Usage: $0 export_list.conf')
+	.describe('h', 'Display the usage')
+	.describe('v', 'Verbose output')
+	.describe('f', 'From year (including)')
+    .demand('f')
+	.describe('u', 'Until year (including)')
+    .demand('u')
+	.describe('p', 'Export public holidays. Can not be used togehter with --school-holidays.')
+    // .default('p', true)
+	.describe('s', 'Export school holidays. Can not be used together with --public-holidays.')
+    .describe('c', 'Country (for which the holidays apply). Defaults to Germany.')
+    .default('c', 'de')
+    .describe('r', 'Region (for which the holidays apply). Defaults to Baden-Württemberg.')
+    .default('r', 'bw')
+	.boolean(['p', 's'])
+	.alias('h', 'help')
+	.alias('v', 'verbose')
+	.alias('f', 'from')
+	.alias('u', 'until')
+	.alias('p', 'public-holidays')
+	.alias('s', 'school-holidays')
+	.alias('c', 'country')
+	.alias('r', 'region');
+
+var argv = optimist.argv;
+
+if (argv.help || argv._.length === 0) {
+	optimist.showHelp();
+	process.exit(0);
+}
+
+/* Error handling {{{ */
+if (argv.p && argv.s) {
+    console.error("--school-holidays and --public-holidays can not be used together.");
+	process.exit(0);
+}
+if (typeof nominatiom_object[argv.c] !== 'object' || typeof nominatiom_object[argv.c][argv.r] !== 'object') {
+    console.error(argv.c + ", " + argv.r + " is currently not supported.");
+	process.exit(0);
+}
+
+/* }}} */
+/* }}} */
+
+var filepath = argv._[0];
+
+var oh_value = argv.p ? 'PH' : 'SH';
+
+write_config_file(filepath, oh_value, nominatiom_object[argv.c][argv.r], new Date(argv.f, 0, 1), new Date(argv.u + 1, 0, 1));
+
+function write_config_file(filepath, oh_value, nominatiom_object, from_date, to_date) {
+    try {
+        oh = new opening_hours(oh_value, nominatiom_object);
+    } catch (err) {
+        console.error('Something went wrong. Please file issue at https://github.com/ypid/opening_hours.js/issues');
+        process.exit(0);
+    }
+
+    var intervals = oh.getOpenIntervals(from_date, to_date);
+
+    var stream = fs.createWriteStream(filepath);
+
+    stream.once('open', function(fd) {
+        for (var i = 0; i < intervals.length; i++) {
+            var holiday_entry = intervals[i];
+            var output_line = [
+                getISODate(holiday_entry[0]),
+            ];
+            if (oh_value === 'SH') { /* Add end date */
+                output_line[0] += '-' + getISODate(holiday_entry[1], -1);
+            }
+
+            output_line.push(holiday_entry[3]);
+            stream.write(output_line.join(' ') + "\n");
+        }
+        stream.end();
+    });
+}
+
+/* Helper functions {{{ */
+// http://stackoverflow.com/a/2998822
+function pad(num, size) {
+    var s = String(num);
+    while (s.length < size) {
+        s = "0" + s;
+    }
+    return s;
+}
+
+function getISODate(date, day_offset) { /* Is a valid ISO 8601 date, but not so nice. */
+    /* Returns date as 20151231 */
+    if (typeof day_offset !== 'number') {
+        day_offset = 0;
+    }
+
+    date.setDate(date.getDate() + day_offset);
+    // Could use strftime node module but then I would have to make an own repository for this script :)
+    return String(date.getFullYear()) + pad(date.getMonth() + 1, 2) + pad(date.getDate(), 2);
+}
+
+/* }}} */