65 lines
1.9 KiB
Java
Executable File
65 lines
1.9 KiB
Java
Executable File
package qz.build.provision.params;
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import java.util.EnumSet;
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import java.util.HashSet;
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public interface EnumParser {
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/**
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* Basic enum parser
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*/
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static <T extends Enum<T>> T parse(Class<T> clazz, String s) {
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return parse(clazz, s, null);
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}
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static <T extends Enum<T>> T parse(Class<T> clazz, String s, T fallbackValue) {
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if(s != null) {
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for(T en : EnumSet.allOf(clazz)) {
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if (en.name().equalsIgnoreCase(s)) {
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return en;
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}
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}
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}
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return fallbackValue;
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}
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static <T extends Enum<T>> T parseStrict(Class<T> clazz, String s, T ... blocklist) throws UnsupportedOperationException {
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if(s != null) {
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HashSet<T> matched = parseSet(clazz, null, s);
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if (matched.size() == 1) {
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T returnVal = matched.iterator().next();
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boolean blocked = false;
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for(T block : blocklist) {
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if(returnVal == block) {
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blocked = true;
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break;
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}
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}
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if(!blocked) {
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return returnVal;
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}
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}
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}
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throw new UnsupportedOperationException(String.format("%s value '%s' failed to match one and only one item", clazz.getSimpleName(), s));
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}
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static <T extends Enum<T>> HashSet<T> parseSet(Class<T> clazz, T all, String s) {
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HashSet<T> matched = new HashSet<>();
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if(s != null) {
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// Handle ALL="*"
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if (all != null && s.equals("*")) {
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matched.add(all);
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}
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String[] parts = s.split("\\|");
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for(String part : parts) {
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T parsed = parse(clazz, part);
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if (parsed != null) {
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matched.add(parsed);
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}
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}
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}
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return matched;
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}
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}
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