1 files changed, 46 insertions, 0 deletions
diff --git a/src/libs/libgroff/strerror.c b/src/libs/libgroff/strerror.c
new file mode 100644
index 0000000..a8887e5
--- /dev/null
+++ b/src/libs/libgroff/strerror.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 1989-2020 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>		/* for MinGW */
+
+#define INT_DIGITS 19		/* enough for 64 bit integer */
+
+#ifndef HAVE_SYS_NERR
+extern int sys_nerr;
+#endif
+#ifndef HAVE_SYS_ERRLIST
+extern char *sys_errlist[];
+#endif
+
+char *strerror(n)
+     int n;
+{
+  static char buf[sizeof("Error ") + 1 + INT_DIGITS];
+  if (n >= 0 && n < sys_nerr && sys_errlist[n] != 0)
+    return sys_errlist[n];
+  else {
+    sprintf(buf, "Error %d", n);
+    return buf;
+  }
+}