Add default font

src/audio/AudioArgs.java

@@ -24,7 +24,8 @@ final class AudioArgs {
 
     filePath = args[0];
     optionalArgs = new float[args.length - 1];
-    if (filePath.matches(".*\\.txt")) {
+    /* Second argument is a path to a font .svg if the first argument is a .txt file. */
+    if (filePath.matches(".*\\.txt") && args.length > 1) {
       fontPath = args[1];
       return;
     }
@@ -42,7 +43,7 @@ final class AudioArgs {
     } else if (filePath.matches(".*\\.svg")) {
       return new SvgParser(filePath);
     } else if (filePath.matches(".*\\.txt")) {
-      return new TextParser(filePath, fontPath);
+      return fontPath.isEmpty() ? new TextParser(filePath) : new TextParser(filePath, fontPath);
     } else {
       throw new IllegalArgumentException(
           "Provided file extension in file " + filePath + " not supported.");
@@ -79,8 +80,9 @@ final class AudioArgs {
 
   private static class IllegalAudioArgumentException extends IllegalArgumentException {
 
-    private static final String USAGE = "Incorrect usage.\nUsage: osci-render objFilePath "
+    private static final String USAGE = "Incorrect usage.\nUsage: osci-render filePath "
-        + "[rotateSpeed] [focalLength] [cameraX] [cameraY] [cameraZ]";
+        + "[rotateSpeed] [focalLength] [cameraX] [cameraY] [cameraZ]\nOR: osci-render textFilePath "
+        + "[fontFilePath]";
 
     public IllegalAudioArgumentException() {
       super(USAGE);

src/parser/TextParser.java

@@ -8,6 +8,7 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import javax.swing.table.DefaultTableCellRenderer;
 import javax.xml.parsers.ParserConfigurationException;
 import org.xml.sax.SAXException;
 import shapes.Shape;
@@ -17,6 +18,7 @@ public class TextParser extends FileParser{
 
   private static final char WIDE_CHAR = 'W';
   private static final double HEIGHT_SCALAR = 1.6;
+  private static final String DEFAULT_FONT = "fonts/SourceCodePro-ExtraLight.svg";
 
   private final Map<Character, List<Shape>> charToShape;
   private final List<String> text;
@@ -31,6 +33,11 @@ public class TextParser extends FileParser{
     parseFile(font);
   }
 
+  public TextParser(String path)
+      throws IOException, SAXException, ParserConfigurationException {
+    this(path, DEFAULT_FONT);
+  }
+
   @Override
   protected String getFileExtension() {
     return ".txt";