- Added support for setting the terminal foreground color.

- Some improvements to error handling.

src/main/java/net/rubygrapefruit/platform/internal/FunctionResult.java

@@ -1,17 +1,26 @@
 package net.rubygrapefruit.platform.internal;
 
 public class FunctionResult {
+    String message;
     int errno;
 
-    void failed(int errno) {
+    void failed(String message, int errno) {
+        this.message = message;
         this.errno = errno;
     }
 
-    public boolean isFailed() {
-        return errno != 0;
+    void failed(String message) {
+        this.message = message;
     }
 
-    public int getErrno() {
-        return errno;
+    public boolean isFailed() {
+        return message != null;
+    }
+
+    public String getMessage() {
+        if (errno != 0) {
+            return String.format("%s (errno %d)", message, errno);
+        }
+        return message;
     }
 }

src/main/java/net/rubygrapefruit/platform/internal/NativeLibraryFunctions.java

@@ -1,7 +1,7 @@
 package net.rubygrapefruit.platform.internal;
 
 public class NativeLibraryFunctions {
-    public static final int VERSION = 1;
+    public static final int VERSION = 2;
 
     public static native int getVersion();
 }

src/main/java/net/rubygrapefruit/platform/internal/TerminfoFunctions.java

@@ -6,7 +6,12 @@ public class TerminfoFunctions {
      */
     public static native void initTerminal(int filedes, FunctionResult result);
 
-    public static native void bold(int filedes, FunctionResult result);
+    public static native void bold(FunctionResult result);
 
-    public static native void normal(int filedes, FunctionResult result);
+    public static native void reset(FunctionResult result);
+
+    /**
+     * Set the foreground color to the given ansi color.
+     */
+    public static native void foreground(int ansiColor, FunctionResult result);
 }