- Bugfix: LibusbJava.cpp, Ln 1288 removed the manipulation of the return value

- Bugfix: Guaranteeing '\0'-Termination of the retrieved C-Strings for all libusb_get_string_descriptor* calls
- Change: The whole interface makes now use of exceptions to pass errors into the java environment instead encoding them into return values.
- Change: Allowing Descriptor strings to have a length of 0

git-svn-id: https://svn.code.sf.net/p/libusbjava/code/trunk@292 94ad28fe-ef68-46b1-9651-e7ae4fcf1c4c

java/src/ch/ntb/inf/libusbJava/exceptions/LibusbError.java

@@ -0,0 +1,129 @@
+package ch.ntb.inf.libusbJava.exceptions;
+
+public class LibusbError extends Exception {
+	private static final long serialVersionUID = 9096323614080207236L;
+	
+	/**
+	 * libusb error codes
+	 */
+	public static final int ERROR_NONE = 0;
+	public static final int ERROR_IO = -1;
+	public static final int ERROR_INVALID_PARAM = -2;
+	public static final int ERROR_ACCESS = -3;
+	public static final int ERROR_NO_DEVICE = -4;
+	public static final int ERROR_NOT_FOUND = -5;
+	public static final int ERROR_BUSY = -6;
+	public static final int ERROR_TIMEOUT = -7;
+	public static final int ERROR_OVERFLOW = -8;
+	public static final int ERROR_PIPE = -9;
+	public static final int ERROR_INTERRUPTED = -10;
+	public static final int ERROR_NO_MEM = -11;
+	public static final int ERROR_NOT_SUPPORTED = -12;
+	public static final int ERROR_OTHER = -99;
+	
+	private int code = ERROR_NONE;
+
+	public LibusbError(int code)
+	{
+		super("libusb result: " + getStringFromCode(code));
+		this.code = code;
+	}
+	
+	public int getErrorCode()
+	{
+		return code;
+	}
+	
+	public static String getStringFromCode(int code)
+	{
+		String result;
+		
+		switch (code)
+		{
+			case ERROR_IO:
+			{
+				result = "ERROR_IO";
+				break;
+			}
+			case ERROR_INVALID_PARAM:
+			{
+				result = "ERROR_INVALID_PARAM";
+				break;
+			}
+			case ERROR_ACCESS:
+			{
+				result = "ERROR_ACCESS";
+				break;
+			}
+			case ERROR_NO_DEVICE:
+			{
+				result = "ERROR_NO_DEVICE";
+				break;
+			}
+			case ERROR_NOT_FOUND:
+			{
+				result = "ERROR_NOT_FOUND";
+				break;
+			}
+			case ERROR_BUSY:
+			{
+				result = "ERROR_BUSY";
+				break;
+			}
+
+			case ERROR_TIMEOUT:
+			{
+				result = "ERROR_TIMEOUT";
+				break;
+			}
+
+			case ERROR_OVERFLOW:
+			{
+				result = "ERROR_OVERFLOW";
+				break;
+			}
+
+			case ERROR_PIPE:
+			{
+				result = "ERROR_PIPE";
+				break;
+			}
+
+			case ERROR_INTERRUPTED:
+			{
+				result = "ERROR_INTERRUPTED";
+				break;
+			}
+
+			case ERROR_NO_MEM:
+			{
+				result = "ERROR_NO_MEM";
+				break;
+			}
+
+			case ERROR_NOT_SUPPORTED:
+			{
+				result = "ERROR_NOT_SUPPORTED";
+				break;
+			}
+			
+			case ERROR_OTHER:
+			{
+				result = "ERROR_OTHER";
+				break;
+			}
+			
+			default:
+			{
+				result = "ERROR_UNKNWON (" + code + ")";
+				break;
+			}
+		}
+		
+		return result;
+	}
+
+	public String getErrorString() {
+		return getStringFromCode(getErrorCode());
+	}
+}