1 files changed, 61 insertions, 0 deletions
diff --git a/RGens/src/main/java/bjc/rgens/parser/GrammarReaderCLI.java b/RGens/src/main/java/bjc/rgens/parser/GrammarReaderCLI.java
new file mode 100644
index 0000000..b8eac35
--- /dev/null
+++ b/RGens/src/main/java/bjc/rgens/parser/GrammarReaderCLI.java
@@ -0,0 +1,61 @@
+package bjc.rgens.parser;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.nio.file.Paths;
+
+import bjc.utils.funcutils.ListUtils;
+import bjc.utils.gen.WeightedGrammar;
+
+/**
+ * App that reads a grammar from a file and generates results
+ * 
+ * @author ben
+ *
+ */
+public class GrammarReaderCLI {
+	private static WeightedGrammar<String> grammar = null;
+
+	/**
+	 * Main application method
+	 * 
+	 * @param args
+	 *            CLI args
+	 */
+	public static void main(String[] args) {
+		if (args.length == 0) {
+			GrammarReaderApp.main(args);
+		} else {
+			String fName = args[0];
+
+			if (fName.equalsIgnoreCase("--help")) {
+				System.out.println(
+						"Usage: java -jar GrammarReader.jar <file-name> <init-rule> <num-res>");
+				System.exit(0);
+			}
+
+			String ruleName = args[1];
+
+			try (FileInputStream fStream = new FileInputStream(fName)) {
+				grammar = RBGrammarReader.fromPath(Paths.get(fName, ""));
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
+
+			if (ruleName.equalsIgnoreCase("--list-rules")) {
+				grammar.getRuleNames().forEach(System.out::println);
+
+				System.exit(0);
+			}
+
+			int rCount = Integer.parseInt(args[2]);
+
+			for (int i = 0; i < rCount; i++) {
+				String ruleResult = ListUtils.collapseTokens(
+						grammar.generateListValues(ruleName, " "));
+
+				System.out.println(ruleResult.replaceAll("\\s+", " "));
+			}
+		}
+	}
+}