altoslib: Create data file open helper in AltosLib

[fw/altos] / altoslib / AltosLib.java

diff --git a/altoslib/AltosLib.java b/altoslib/AltosLib.java
index 355c7a27a9c337f71fca43e0dbfee9f58399b709..6c1729dfc03a32a51f64f3d8fbf2eabf092ec652 100644 (file)
--- a/altoslib/AltosLib.java
+++ b/altoslib/AltosLib.java
@@ -588,4 +588,28 @@ public class AltosLib {
        public static String igniter_name(int i) {
                return String.format("Ignitor %c", 'A' + i);
        }
+
+       public static AltosRecordSet record_set(File file) throws FileNotFoundException, IOException {
+               FileInputStream in;
+               in = new FileInputStream(file);
+               if (file.getName().endsWith("telem")) {
+                       return new AltosTelemetryFile(in);
+               } else if (file.getName().endsWith("eeprom")) {
+                       return new AltosEepromFile(in);
+               } else {
+                       String  name = file.getName();
+                       int     dot = name.lastIndexOf('.');
+                       String  extension;
+
+                       if (dot == -1)
+                               throw new IOException(String.format("%s (Missing extension)", file.toString()));
+                       else {
+                               extension = name.substring(dot);
+                               throw new IOException(String.format("%s (Invalid extension '%s')",
+                                                                   file.toString(),
+                                                                   extension));
+                       }
+               }
+       }
+
 }