Implementation of zmq_strerror moved from zmq.cpp to err.cpp

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

src/err.cpp

@@ -22,6 +22,47 @@
 #include "err.hpp"
 #include "platform.hpp"
 
+const char *zmq::errno_to_string (int errno_)
+{
+    switch (errno_) {
+#if defined ZMQ_HAVE_WINDOWS
+    case ENOTSUP:
+        return "Not supported";
+    case EPROTONOSUPPORT:
+        return "Protocol not supported";
+    case ENOBUFS:
+        return "No buffer space available";
+    case ENETDOWN:
+        return "Network is down";
+    case EADDRINUSE:
+        return "Address in use";
+    case EADDRNOTAVAIL:
+        return "Address not available";
+    case ECONNREFUSED:
+        return "Connection refused";
+    case EINPROGRESS:
+        return "Operation in progress";
+#endif
+    case EFSM:
+        return "Operation cannot be accomplished in current state";
+    case ENOCOMPATPROTO:
+        return "The protocol is not compatible with the socket type";
+    case ETERM:
+        return "Context was terminated";
+    case EMTHREAD:
+        return "No thread available";
+    default:
+#if defined _MSC_VER
+#pragma warning (push)
+#pragma warning (disable:4996)
+#endif
+        return strerror (errno_);
+#if defined _MSC_VER
+#pragma warning (pop)
+#endif
+    }
+}
+
 #ifdef ZMQ_HAVE_WINDOWS
 
 const char *zmq::wsa_error()

src/err.hpp

@@ -35,15 +35,18 @@
 #include <netdb.h>
 #endif
 
+namespace zmq
+{
+    const char *errno_to_string (int errno_);
+}
+
 #ifdef ZMQ_HAVE_WINDOWS
 
 namespace zmq
 {
-
     const char *wsa_error ();
     void win_error (char *buffer_, size_t buffer_size_);
     void wsa_error_to_errno (); 
-  
 }
 
 //  Provides convenient way to check WSA-style errors on Windows.

src/zmq.cpp

@@ -63,43 +63,7 @@ void zmq_version (int *major_, int *minor_, int *patch_)
 
 const char *zmq_strerror (int errnum_)
 {
-    switch (errnum_) {
-#if defined ZMQ_HAVE_WINDOWS
-    case ENOTSUP:
-        return "Not supported";
-    case EPROTONOSUPPORT:
-        return "Protocol not supported";
-    case ENOBUFS:
-        return "No buffer space available";
-    case ENETDOWN:
-        return "Network is down";
-    case EADDRINUSE:
-        return "Address in use";
-    case EADDRNOTAVAIL:
-        return "Address not available";
-    case ECONNREFUSED:
-        return "Connection refused";
-    case EINPROGRESS:
-        return "Operation in progress";
-#endif
-    case EFSM:
-        return "Operation cannot be accomplished in current state";
-    case ENOCOMPATPROTO:
-        return "The protocol is not compatible with the socket type";
-    case ETERM:
-        return "Context was terminated";
-    case EMTHREAD:
-        return "No thread available";
-    default:
-#if defined _MSC_VER
-#pragma warning (push)
-#pragma warning (disable:4996)
-#endif
-        return strerror (errnum_);
-#if defined _MSC_VER
-#pragma warning (pop)
-#endif
-    }
+    return zmq::errno_to_string (errnum_);
 }
 
 int zmq_msg_init (zmq_msg_t *msg_)