From 169853692017480d065208cb768b83f1014cf68a Mon Sep 17 00:00:00 2001
From: Andreas Baumann <andreas.baumann@eurospider.com>
Date: Wed, 26 Feb 2020 07:34:48 +0100
Subject: added jargs, made it build again, but it bases on a really old Lucene
 3.5.0, so it's no longer of any use for modern Lucene/SolR/ElasticSearch

---
 .../jargs-1.0/examples/gnu/AutoHelpParser.java     | 87 ++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 3rdParty/jargs-1.0/examples/gnu/AutoHelpParser.java

(limited to '3rdParty/jargs-1.0/examples/gnu/AutoHelpParser.java')

diff --git a/3rdParty/jargs-1.0/examples/gnu/AutoHelpParser.java b/3rdParty/jargs-1.0/examples/gnu/AutoHelpParser.java
new file mode 100644
index 0000000..f42ec5f
--- /dev/null
+++ b/3rdParty/jargs-1.0/examples/gnu/AutoHelpParser.java
@@ -0,0 +1,87 @@
+package jargs.examples.gnu;
+
+import jargs.gnu.CmdLineParser;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * This example shows how to dynamically create basic output for a --help option. 
+ */
+public class AutoHelpParser extends CmdLineParser {
+	List optionHelpStrings = new ArrayList();
+
+	public Option addHelp(Option option, String helpString) {
+		optionHelpStrings.add(" -" + option.shortForm() + "/--" + option.longForm() + ": " + helpString);
+		return option;
+	}
+	
+	public void printUsage() {
+        System.err.println("usage: prog [options]");
+        for (Iterator i = optionHelpStrings.iterator(); i.hasNext(); ) {
+        	System.err.println(i.next());
+        }
+    }
+
+    public static void main( String[] args ) {
+    	AutoHelpParser parser = new AutoHelpParser();
+    	CmdLineParser.Option verbose = parser.addHelp(
+    			parser.addBooleanOption('v', "verbose"),
+    			"Print extra information");
+        CmdLineParser.Option size = parser.addHelp(
+        		parser.addIntegerOption('s', "size"),
+				"The extent of the thing");
+        CmdLineParser.Option name = parser.addHelp(
+        		parser.addStringOption('n', "name"),
+				"Name given to the widget");
+        CmdLineParser.Option fraction = parser.addHelp(
+        		parser.addDoubleOption('f', "fraction"),
+				"What percentage should be discarded");
+        CmdLineParser.Option help = parser.addHelp(
+        		parser.addBooleanOption('h', "help"),
+				"Show this help message");
+
+        try {
+            parser.parse(args);
+        }
+        catch ( CmdLineParser.OptionException e ) {
+            System.err.println(e.getMessage());
+            parser.printUsage();
+            System.exit(2);
+        }
+
+        if ( Boolean.TRUE.equals(parser.getOptionValue(help))) {
+            parser.printUsage();
+            System.exit(0);
+        }
+
+        // Extract the values entered for the various options -- if the
+        // options were not specified, the corresponding values will be
+        // null.
+        Boolean verboseValue = (Boolean)parser.getOptionValue(verbose);
+        Integer sizeValue = (Integer)parser.getOptionValue(size);
+        String nameValue = (String)parser.getOptionValue(name);
+        Double fractionValue = (Double)parser.getOptionValue(fraction);
+
+        // For testing purposes, we just print out the option values
+        System.out.println("verbose: " + verboseValue);
+        System.out.println("size: " + sizeValue);
+        System.out.println("name: " + nameValue);
+        System.out.println("fraction: " + fractionValue);
+
+        // Extract the trailing command-line arguments ('a_nother') in the
+        // usage string above.
+        String[] otherArgs = parser.getRemainingArgs();
+        System.out.println("remaining args: ");
+        for ( int i = 0; i < otherArgs.length; ++i ) {
+            System.out.println(otherArgs[i]);
+        }
+
+        // In a real program, one would pass the option values and other
+        // arguments to a function that does something more useful.
+
+        System.exit(0);
+    }
+
+}
-- 
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