Reworked errno. Added values from Linux / Windows. Added error texts. Some errno...

[pdclib] / functions / string / strerror.c

diff --git a/functions/string/strerror.c b/functions/string/strerror.c
index 48dba0df56a1877927f094d3712189ca25633d43..47e064be43324deb746ae2110ee8cb0002479911 100644 (file)
--- a/functions/string/strerror.c
+++ b/functions/string/strerror.c
@@ -1,8 +1,39 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-char * strerror( int errcode ) { /* TODO */ };
+/* strerror( int )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <string.h>
+
+#ifndef REGTEST
+
+#include <_PDCLIB_locale.h>
+
+/* TODO: Doing this via a static array is not the way to do it. */
+char * strerror( int errnum )
+{
+    if ( errnum >= _PDCLIB_ERRNO_MAX )
+    {
+        return (char *)"Unknown error";
+    }
+    else
+    {
+        return (char *)_PDCLIB_threadlocale()->_ErrnoStr[errnum];
+    }
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+#include <stdio.h>
+#include <errno.h>
+
+int main( void )
+{
+    TESTCASE( strerror( ERANGE ) != strerror( EDOM ) );
+    return TEST_RESULTS;
+}
+#endif