support Windows XP by working around lack of symlink support with ful…

…l copies - refs tilemill-project#1096

index.js

@@ -1,12 +1,35 @@
 #!/usr/bin/env node
+
+var fs = require('fs');
+
 process.title = 'tilemill';
 
 // This is necessary to make optimist not special-case into coffeescript as
 // certain node installs (e.g. ubuntu node ppa) do not use `node` as the binary
 // name.
 process.argv[0] = 'node';
+
 if (process.platform === 'win32') {
+
+    // HOME is undefined on windows
     process.env.HOME = process.env.HOMEPATH;
+
+    // test for symlink support and fallback
+    // to full copying of files if lacking
+    try {
+        fs.symlinkSync('/tmp/from.txt','/tmp/to.txt');
+    } catch (err) {
+        if (err.code === 'ENOTSUP') {
+            fs.symlink = function(from,to,cb) {
+                try {
+                    fs_utils.cprSync(from,to);
+                    return cb();
+                } catch (err) {
+                    return cb(err);
+                }
+            }
+        }
+    }
 }
 
 // Default --config flag to user's home .tilemill.json config file.