JarCastings-expressions library for Java
S-Expressions are a very simple, very flexible data format. It describes tree structures, or in this case: lists of lists or strings.
Goals
Have a simple, efficient format for...
- data transfer
- configuration files
- object serialization
Additionally, make the API flexible enough to support other use cases, like implementing a Lisp.
Examples
Sample for serialization
TODO
Sample for configuration files
A simple configuration file reader is supplied. It can read the following kind of property files:
; Sample config file
; At the lowest level, we have a key->value mapping
(key value)
(keys-dont-have-spaces but the values can have spaces. All whitespace is turned into a single space.)
(but! "when you quote a value, spaces are retained")
(my-value-is-an-empty-string)
; Here we have a hierarchy.
(application
(window
(width 320)
(height 200)
(x 100)
(y 100))
(name Hello World!))
It can be read as if it were a .properties file:
SProperties properties = new SProperties();
properties.load("/config.s");
properties.get("application.window.height").ifPresent(System.out::println);
for (Map.Entry<String, String> e : properties) {
System.out.println(e.getKey() + "->" + e.getValue());
}
Sample for data storage
TODO
