add symbols from <unctrl.h>

2 files changed, 32 insertions, 0 deletions

diff --git a/src/unctrl/chtype.ref b/src/unctrl/chtype.ref
new file mode 100644
index 00000000..cc36394f
--- /dev/null
+++ b/src/unctrl/chtype.ref
@@ -0,0 +1,3 @@
+#include <term.h>
+REFERENCE(curses/chtype.c)
+XOPEN(4)
diff --git a/src/unctrl/unctrl.c b/src/unctrl/unctrl.c
new file mode 100644
index 00000000..3ec00c33
--- /dev/null
+++ b/src/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)
+*/