X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Fperror.c;h=609562a8e46a783a89420808117163d6d8ce5c5e;hb=4116251e9bb6c386580d71d8c4afd2d0d08c6096;hp=f93a53b522fa18ba3c8a00e9fa2a19973146cf8d;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec;p=pdclib

diff --git a/functions/stdio/perror.c b/functions/stdio/perror.c
index f93a53b..609562a 100644
--- a/functions/stdio/perror.c
+++ b/functions/stdio/perror.c
@@ -1,8 +1,37 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-void perror( const char * s ) { /* TODO */ };
+/* $Id$ */
+
+/* perror( const char * )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdio.h>
+
+#ifndef REGTEST
+
+#include <errno.h>
+
+/* TODO: Doing this via a static array is not the way to do it. */
+void perror( const char * s )
+{
+    if ( ( s != NULL ) && ( s[0] != '\n' ) )
+    {
+        fprintf( stderr, "%s: ", s );
+    }
+    fprintf( stderr, "%s\n", _PDCLIB_errno_texts[ errno ] );
+    return;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    TESTCASE( NO_TESTDRIVER );
+    return TEST_RESULTS;
+}
+
+#endif