From fa799768c4f6d97c5f60a37829ad1b457b7c0096 Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Wed, 13 Apr 2022 19:51:54 -0400
Subject: separate from libc

---
 unctrl/chtype.ref |  3 +++
 unctrl/unctrl.c   | 29 +++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 unctrl/chtype.ref
 create mode 100644 unctrl/unctrl.c

(limited to 'unctrl')

diff --git a/unctrl/chtype.ref b/unctrl/chtype.ref
new file mode 100644
index 0000000..b21d377
--- /dev/null
+++ b/unctrl/chtype.ref
@@ -0,0 +1,3 @@
+#include <unctrl.h>
+REFERENCE(curses/chtype.c)
+XOPEN(4)
diff --git a/unctrl/unctrl.c b/unctrl/unctrl.c
new file mode 100644
index 0000000..fc77e6b
--- /dev/null
+++ b/unctrl/unctrl.c
@@ -0,0 +1,29 @@
+#include <unctrl.h>
+#include <curses.h>
+#include <ctype.h>
+#include <stddef.h>
+
+char * unctrl(chtype c)
+{
+	static char buf[3];
+	char * ret = NULL;
+	int ch = c & A_CHARTEXT;
+
+	if (iscntrl(ch)) {
+		buf[0] = '^';
+		buf[1] = ch + 'A';
+		buf[2] = '\0';
+		ret = buf;
+	} else if (isprint(ch)) {
+		buf[0] = ch;
+		buf[1] = '\0';
+		ret = buf;
+	}
+
+	return ret;
+}
+
+/*
+XOPEN(4)
+LINK(curses)
+*/
-- 
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