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-rw-r--r--lib/et/com_err.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/lib/et/com_err.c b/lib/et/com_err.c
new file mode 100644
index 0000000..7294c6d
--- /dev/null
+++ b/lib/et/com_err.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright 1987, 1988 by MIT Student Information Processing Board.
+ *
+ * Permission to use, copy, modify, and distribute this software and
+ * its documentation for any purpose is hereby granted, provided that
+ * the names of M.I.T. and the M.I.T. S.I.P.B. not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. M.I.T. and the
+ * M.I.T. S.I.P.B. make no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without
+ * express or implied warranty.
+ */
+
+#include "config.h"
+#include <stdio.h>
+#ifdef HAVE_TERMIOS_H
+#include <termios.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include "com_err.h"
+#include "error_table.h"
+#include "internal.h"
+
+static void
+default_com_err_proc (const char *whoami, errcode_t code, const
+ char *fmt, va_list args)
+ COM_ERR_ATTR((format(printf, 3, 0)));
+
+static void
+default_com_err_proc (const char *whoami, errcode_t code, const
+ char *fmt, va_list args)
+{
+ int do_cr = 1, fd = fileno(stderr);
+
+ if (whoami) {
+ fputs(whoami, stderr);
+ fputs(": ", stderr);
+ }
+ if (code) {
+ fputs(error_message(code), stderr);
+ fputs(" ", stderr);
+ }
+ if (fmt) {
+ vfprintf (stderr, fmt, args);
+ }
+ if (!isatty(fd))
+ do_cr = 0;
+#ifdef HAVE_TERMIOS_H
+ else {
+ struct termios t;
+
+ if ((tcgetattr(fd, &t)) == 0 &&
+ (t.c_oflag & OPOST) && (t.c_oflag & ONLCR))
+ do_cr = 0;
+ }
+#endif
+ if (do_cr)
+ fputc('\r', stderr);
+ fputc('\n', stderr);
+ fflush(stderr);
+}
+
+typedef void (*errf) (const char *, errcode_t, const char *, va_list)
+ COM_ERR_ATTR((format(printf, 3, 0)));
+
+errf com_err_hook = default_com_err_proc;
+
+void com_err_va (const char *whoami, errcode_t code, const char *fmt,
+ va_list args)
+{
+ (*com_err_hook) (whoami, code, fmt, args);
+}
+
+void com_err (const char *whoami,
+ errcode_t code,
+ const char *fmt, ...)
+{
+ va_list pvar;
+
+ if (!com_err_hook)
+ com_err_hook = default_com_err_proc;
+ va_start(pvar, fmt);
+ com_err_va (whoami, code, fmt, pvar);
+ va_end(pvar);
+}
+
+errf set_com_err_hook(errf new_proc)
+{
+ errf x = com_err_hook;
+
+ if (new_proc)
+ com_err_hook = new_proc;
+ else
+ com_err_hook = default_com_err_proc;
+
+ return x;
+}
+
+errf reset_com_err_hook(void) {
+ errf x = com_err_hook;
+ com_err_hook = default_com_err_proc;
+ return x;
+}