1 files changed, 48 insertions, 0 deletions
diff --git a/args4j/args4j/src/org/kohsuke/args4j/spi/DelimitedOptionHandler.java b/args4j/args4j/src/org/kohsuke/args4j/spi/DelimitedOptionHandler.java
new file mode 100644
index 0000000..def390d
--- /dev/null
+++ b/args4j/args4j/src/org/kohsuke/args4j/spi/DelimitedOptionHandler.java
@@ -0,0 +1,48 @@
+package org.kohsuke.args4j.spi;
+
+import org.kohsuke.args4j.CmdLineException;
+import org.kohsuke.args4j.CmdLineParser;
+import org.kohsuke.args4j.Option;
+import org.kohsuke.args4j.OptionDef;
+
+/**
+ * Partial {@link OptionHandler} implementation that takes a single value to the option,
+ * which is then gets split into individual tokens using fixed delimiter.
+ *
+ * <p>
+ * This class is marked as {@code abstract} even though it has no abstract methods
+ * to indicate that the class cannot be used by itself in {@link Option#handler()},
+ * due to the extra argument that it takes.
+ *
+ * @author kmahoney
+ */
+public abstract class DelimitedOptionHandler<T> extends OptionHandler<T> {
+
+    protected final String delimiter;
+    protected final OneArgumentOptionHandler<? extends T> individualOptionHandler;
+
+    public DelimitedOptionHandler(CmdLineParser parser, OptionDef option, Setter<? super T> setter, String delimiter, OneArgumentOptionHandler<? extends T> individualOptionHandler) {
+        super(parser, option, setter);
+        this.delimiter = delimiter;
+        this.individualOptionHandler = individualOptionHandler;
+    }
+
+    @Override
+    public int parseArguments(Parameters params) throws CmdLineException {
+        String full = params.getParameter(0);
+        String[] delimitedStrs = full.split(delimiter);
+        for (String delimitedStr : delimitedStrs) {
+            setter.addValue(individualOptionHandler.parse(delimitedStr));
+        }
+
+        // The number of Parameters consumed (not the number set)
+        return 1;
+    }
+
+    @Override
+    public String getDefaultMetaVariable() {
+        final String tMetaVar = individualOptionHandler.getDefaultMetaVariable();
+        if (tMetaVar == null || tMetaVar.trim().isEmpty()) return tMetaVar;
+        return "<" + tMetaVar  + delimiter + tMetaVar + delimiter + "...>";
+    }
+}
+\ No newline at end of file