JAL-1812 bind Groovy to Jalview rather than Desktop, remove reflection

[jalview.git] / src / jalview / bin / ArgsParser.java

diff --git a/src/jalview/bin/ArgsParser.java b/src/jalview/bin/ArgsParser.java
new file mode 100644 (file)
index 0000000..9c8d0df
--- /dev/null
+++ b/src/jalview/bin/ArgsParser.java
@@ -0,0 +1,97 @@
+package jalview.bin;
+
+import java.net.URLDecoder;
+import java.util.Vector;
+
+/**
+ * Notes: this argParser does not distinguish between parameter switches,
+ * parameter values and argument text. If an argument happens to be identical to
+ * a parameter, it will be taken as such (even though it didn't have a '-'
+ * prefixing it).
+ * 
+ * @author Andrew Waterhouse and JBP documented.
+ * 
+ */
+public class ArgsParser
+{
+  Vector<String> vargs = null;
+
+  public ArgsParser(String[] args)
+  {
+    vargs = new Vector<String>();
+    for (int i = 0; i < args.length; i++)
+    {
+      String arg = args[i].trim();
+      if (arg.charAt(0) == '-')
+      {
+        arg = arg.substring(1);
+      }
+      vargs.addElement(arg);
+    }
+  }
+
+  /**
+   * check for and remove first occurence of arg+parameter in arglist.
+   * 
+   * @param arg
+   * @return return the argument following the given arg if arg was in list.
+   */
+  public String getValue(String arg)
+  {
+    return getValue(arg, false);
+  }
+
+  public String getValue(String arg, boolean utf8decode)
+  {
+    int index = vargs.indexOf(arg);
+    String dc = null, ret = null;
+    if (index != -1)
+    {
+      ret = vargs.elementAt(index + 1).toString();
+      vargs.removeElementAt(index);
+      vargs.removeElementAt(index);
+      if (utf8decode && ret != null)
+      {
+        try
+        {
+          dc = URLDecoder.decode(ret, "UTF-8");
+          ret = dc;
+        } catch (Exception e)
+        {
+          // TODO: log failure to decode
+        }
+      }
+    }
+    return ret;
+  }
+
+  /**
+   * check for and remove first occurence of arg in arglist.
+   * 
+   * @param arg
+   * @return true if arg was present in argslist.
+   */
+  public boolean contains(String arg)
+  {
+    if (vargs.contains(arg))
+    {
+      vargs.removeElement(arg);
+      return true;
+    }
+    else
+    {
+      return false;
+    }
+  }
+
+  public String nextValue()
+  {
+    return vargs.remove(0);
+  }
+
+  public int getSize()
+  {
+    return vargs.size();
+  }
+
+}
\ No newline at end of file