initial commit

java/src/game/command/PatternReplacer.java

@@ -0,0 +1,49 @@
+package game.command;
+
+import java.util.function.Function;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class PatternReplacer {
+	private final String variable;
+	private final boolean matchAll;
+	private final Pattern pattern;
+	private final Function<String, String> function;
+	
+	public PatternReplacer(String variable, boolean matchAll, Function<String, String> function) {
+		this.variable = variable;
+		this.matchAll = matchAll;
+		this.pattern = Pattern.compile("\\$\\((" + variable + (matchAll ? "[^\\)]*" : "") + ")\\)");
+		this.function = function;
+	}
+	
+	public void replaceVar(StringBuffer sb) {
+		String str = sb.toString();
+		sb.delete(0, sb.length());
+		Matcher matcher = this.pattern.matcher(str);
+		while(matcher.find()) {
+			String orig = matcher.group(1);
+			String rep = this.function.apply(orig);
+			if(rep == null)
+				throw new ScriptException("Variable '%s' konnte in diesem Kontext nicht ersetzt werden", orig);
+			matcher.appendReplacement(sb, rep);
+		}
+		matcher.appendTail(sb);
+	}
+	
+	public String getVariable() {
+		return this.variable;
+	}
+	
+	public boolean matchesAll() {
+		return this.matchAll;
+	}
+	
+	public Pattern getPattern() {
+		return this.pattern;
+	}
+	
+	public Function<String, String> getFunction() {
+		return this.function;
+	}
+}