Re-root site.

tools/replace.js

@@ -0,0 +1,69 @@
+#! /usr/bin/env nodejs
+// Copyright 2021 Bradley D. Nelson
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var fs = require('fs');
+
+function DropCopyright(source) {
+  var lines = source.split('\n');
+  var cleaned = [];
+  for (var i = 0; i < lines.length; ++i) {
+    if (lines[i] == '<!--') {
+      while (lines[i] != '-->') {
+        ++i;
+      }
+      i += 2;
+    }
+    if (lines[i].search('Copyright') >= 0) {
+      while (lines[i] != '') {
+        ++i;
+      }
+    } else {
+      cleaned.push(lines[i]);
+    }
+  }
+  return cleaned.join('\n');
+}
+
+var source = fs.readFileSync(process.stdin.fd).toString();
+var replacements = [];
+for (var i = 2; i < process.argv.length; ++i) {
+  var item = process.argv[i];
+  var m = item.match(/^([^=]+)=@(.+)$/);
+  if (m) {
+    var content = DropCopyright(fs.readFileSync(m[2]).toString());
+    replacements.push(['{{' + m[1] + '}}', content]);
+    continue;
+  }
+  var m = item.match(/^([^=]+)=(.+)$/);
+  if (m) {
+    replacements.push(['{{' + m[1] + '}}', m[2]]);
+    continue;
+  }
+  throw 'Bad replacement ' + item;
+}
+
+for (;;) {
+  var old_source = source;
+  for (var i = 0; i < replacements.length; ++i) {
+    source = source.replace(
+        replacements[i][0],
+        function() { return replacements[i][1]});
+  }
+  if (old_source == source) {
+    break;
+  }
+}
+
+process.stdout.write(source);