First hacks on bin/mess-up.

bin/mess-up

@@ -0,0 +1,88 @@
+#!/usr/bin/env node
+
+var xml2js = require('xml2js'),
+    fs = require('fs'),
+    _ = require('underscore')._,
+    path = require('path'),
+    sys = require('sys');
+
+require.paths.unshift(path.join(__dirname, '../lib'), path.join(__dirname, '../lib/node'));
+
+var mess = require('mess');
+
+var args = process.argv.slice(1);
+var options = {
+    silent: false,
+    json: false
+};
+
+args = args.filter(function (arg) {
+    var match;
+
+    if (match = arg.match(/^--?([a-z][0-9a-z-]*)$/i)) { arg = match[1] }
+    else { return arg }
+
+/*
+    switch (arg) {
+        case 'h':
+        case 'help':
+            sys.puts("Usage: messc source");
+            sys.puts("Options:");
+            sys.puts("  -j\tParse JSON map manifest");
+            process.exit(0);
+            break;
+    }
+    */
+});
+
+var input = args[1];
+if (input && input[0] != '/') {
+    input = path.join(process.cwd(), input);
+}
+var output = args[2];
+if (output && output[0] != '/') {
+    output = path.join(process.cwd(), output);
+}
+
+function upRule(xmlRule) {
+    this.filters = xmlRule.Filter ? this.upFilter(xmlRule.Filter) : [];
+}
+
+upRule.prototype.upFilter = function(xmlFilter) {
+    var filters = [];
+    console.log(xmlFilters);
+    var opXML = {
+        '<=': '&lt;=',
+        '>=': '&gt;=',
+        '=>': '&gt;=',
+        '!=': '!=',
+        '<': '&lt;',
+        '>': '&gt;',
+        '=': '='
+    };
+    var opre = new RegExp('(' + _.keys(opXML).join('|') + ')');
+    filters = xmlFilters.map(function(f) {
+        var element = f.match(/\[(\w+)\]/)[1];
+        var operator = f.match(opre)[1];
+        return element + ' ' + operator;
+    });
+    console.log(filters);
+    return filters;
+}
+
+upRule.prototype.toMSS = function() {
+    return this.filters.join('');
+}
+
+fs.readFile(input, 'utf-8', function (e, data) {
+    var rules = [];
+    var firstParser = new xml2js.Parser();
+    firstParser.addListener('end', function(mapnik_xml) {
+        mapnik_xml.Style.forEach(function(s) {
+            s.Rule.forEach(function(r) {
+                rules.push((new upRule(r)).toMSS());
+            });
+        });
+    }).parseString(data);
+    console.log(rules);
+});