Meta: Make embed_as_string_view.py produce Strings instead

This is only used for CSS style sheets. One case wants it as a String,
and the others don't care, but will in future also want to have the
source as a String.

Meta/embed_as_string.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python3
+r"""
+    Embeds a file into a String, a la #embed from C++23
+"""
+
+import argparse
+import sys
+
+
+def main():
+    parser = argparse.ArgumentParser(
+                 epilog=__doc__,
+                 formatter_class=argparse.RawDescriptionHelpFormatter)
+    parser.add_argument('input', help='input file to stringify')
+    parser.add_argument('-o', '--output', required=True,
+                        help='output file')
+    parser.add_argument('-n', '--variable-name', required=True,
+                        help='name of the C++ variable')
+    parser.add_argument('-s', '--namespace', required=False,
+                        help='C++ namespace to put the string into')
+    args = parser.parse_args()
+
+    with open(args.output, 'w') as f:
+        f.write("#include <AK/String.h>\n")
+        if args.namespace:
+            f.write(f"namespace {args.namespace} {{\n")
+        f.write(f"extern String {args.variable_name};\n")
+        f.write(f"String {args.variable_name} = R\"~~~(")
+        with open(args.input, 'r') as input:
+            for line in input.readlines():
+                f.write(f"{line}")
+        f.write(")~~~\"_string;\n")
+        if args.namespace:
+            f.write("}\n")
+
+
+if __name__ == '__main__':
+    sys.exit(main())