Add libteken (from FreeBSD) to third_party.

third_party/libteken/teken/teken.h

Index: third_party/libteken/teken/teken.h
diff --git a/third_party/libteken/teken/teken.h b/third_party/libteken/teken/teken.h
new file mode 100644
index 0000000000000000000000000000000000000000..e5c252b9790e50f40ed05255431262ccce259762
--- /dev/null
+++ b/third_party/libteken/teken/teken.h
@@ -0,0 +1,223 @@
+/*-
+ * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: head/sys/teken/teken.h 259667 2013-12-20 21:31:50Z ed $
+ */
+
+#ifndef _TEKEN_H_
+#define	_TEKEN_H_
+
+// !!! Start of Mojo addition.
+#include <stdint.h>
+// !!! End of Mojo addition.
+#include <sys/types.h>
+
+/*
+ * libteken: terminal emulation library.
+ *
+ * This library converts an UTF-8 stream of bytes to terminal drawing
+ * commands.
+ */
+
+// !!! Start of Mojo addition.
+#ifdef __cplusplus
+extern "C" {
+#endif
+// !!! End of Mojo addition.
+
+typedef uint32_t teken_char_t;
+typedef unsigned short teken_unit_t;
+typedef unsigned char teken_format_t;
+#define	TF_BOLD		0x01	/* Bold character. */
+#define	TF_UNDERLINE	0x02	/* Underline character. */
+#define	TF_BLINK	0x04	/* Blinking character. */
+#define	TF_REVERSE	0x08	/* Reverse rendered character. */
+#define	TF_CJK_RIGHT	0x10	/* Right-hand side of CJK character. */
+typedef unsigned char teken_color_t;
+#define	TC_BLACK	0
+#define	TC_RED		1
+#define	TC_GREEN	2
+#define	TC_BROWN	3
+#define	TC_BLUE		4
+#define	TC_MAGENTA	5
+#define	TC_CYAN		6
+#define	TC_WHITE	7
+#define	TC_NCOLORS	8
+
+typedef struct {
+	teken_unit_t	tp_row;
+	teken_unit_t	tp_col;
+} teken_pos_t;
+typedef struct {
+	teken_pos_t	tr_begin;
+	teken_pos_t	tr_end;
+} teken_rect_t;
+typedef struct {
+	teken_format_t	ta_format;
+	teken_color_t	ta_fgcolor;
+	teken_color_t	ta_bgcolor;
+} teken_attr_t;
+typedef struct {
+	teken_unit_t	ts_begin;
+	teken_unit_t	ts_end;
+} teken_span_t;
+
+typedef struct __teken teken_t;
+
+typedef void teken_state_t(teken_t *, teken_char_t);
+
+/*
+ * Drawing routines supplied by the user.
+ */
+
+typedef void tf_bell_t(void *);
+typedef void tf_cursor_t(void *, const teken_pos_t *);
+typedef void tf_putchar_t(void *, const teken_pos_t *, teken_char_t,
+    const teken_attr_t *);
+typedef void tf_fill_t(void *, const teken_rect_t *, teken_char_t,
+    const teken_attr_t *);
+typedef void tf_copy_t(void *, const teken_rect_t *, const teken_pos_t *);
+typedef void tf_param_t(void *, int, unsigned int);
+#define	TP_SHOWCURSOR	0
+#define	TP_KEYPADAPP	1
+#define	TP_AUTOREPEAT	2
+#define	TP_SWITCHVT	3
+#define	TP_132COLS	4
+#define	TP_SETBELLPD	5
+#define	TP_SETBELLPD_PITCH(pd)		((pd) >> 16)
+#define	TP_SETBELLPD_DURATION(pd)	((pd) & 0xffff)
+#define	TP_MOUSE	6
+typedef void tf_respond_t(void *, const void *, size_t);
+
+typedef struct {
+	tf_bell_t	*tf_bell;
+	tf_cursor_t	*tf_cursor;
+	tf_putchar_t	*tf_putchar;
+	tf_fill_t	*tf_fill;
+	tf_copy_t	*tf_copy;
+	tf_param_t	*tf_param;
+	tf_respond_t	*tf_respond;
+} teken_funcs_t;
+
+typedef teken_char_t teken_scs_t(teken_t *, teken_char_t);
+
+/*
+ * Terminal state.
+ */
+
+struct __teken {
+	const teken_funcs_t *t_funcs;
+	void		*t_softc;
+
+	teken_state_t	*t_nextstate;
+	unsigned int	 t_stateflags;
+
+#define T_NUMSIZE	8
+	unsigned int	 t_nums[T_NUMSIZE];
+	unsigned int	 t_curnum;
+
+	teken_pos_t	 t_cursor;
+	teken_attr_t	 t_curattr;
+	teken_pos_t	 t_saved_cursor;
+	teken_attr_t	 t_saved_curattr;
+
+	teken_attr_t	 t_defattr;
+	teken_pos_t	 t_winsize;
+
+	/* For DECSTBM. */
+	teken_span_t	 t_scrollreg;
+	/* For DECOM. */
+	teken_span_t	 t_originreg;
+
+#define	T_NUMCOL	160
+	unsigned int	 t_tabstops[T_NUMCOL / (sizeof(unsigned int) * 8)];
+
+	unsigned int	 t_utf8_left;
+	teken_char_t	 t_utf8_partial;
+
+	unsigned int	 t_curscs;
+	teken_scs_t	*t_saved_curscs;
+	teken_scs_t	*t_scs[2];
+};
+
+/* Initialize teken structure. */
+void	teken_init(teken_t *, const teken_funcs_t *, void *);
+
+/* Deliver character input. */
+void	teken_input(teken_t *, const void *, size_t);
+
+/* Get/set teken attributes. */
+const teken_pos_t *teken_get_cursor(teken_t *);
+const teken_attr_t *teken_get_curattr(teken_t *);
+const teken_attr_t *teken_get_defattr(teken_t *);
+void	teken_get_defattr_cons25(teken_t *, int *, int *);
+const teken_pos_t *teken_get_winsize(teken_t *);
+void	teken_set_cursor(teken_t *, const teken_pos_t *);
+void	teken_set_curattr(teken_t *, const teken_attr_t *);
+void	teken_set_defattr(teken_t *, const teken_attr_t *);
+void	teken_set_winsize(teken_t *, const teken_pos_t *);
+void	teken_set_winsize_noreset(teken_t *, const teken_pos_t *);
+
+/* Key input escape sequences. */
+#define	TKEY_UP		0x00
+#define	TKEY_DOWN	0x01
+#define	TKEY_LEFT	0x02
+#define	TKEY_RIGHT	0x03
+
+#define	TKEY_HOME	0x04
+#define	TKEY_END	0x05
+#define	TKEY_INSERT	0x06
+#define	TKEY_DELETE	0x07
+#define	TKEY_PAGE_UP	0x08
+#define	TKEY_PAGE_DOWN	0x09
+
+#define	TKEY_F1		0x0a
+#define	TKEY_F2		0x0b
+#define	TKEY_F3		0x0c
+#define	TKEY_F4		0x0d
+#define	TKEY_F5		0x0e
+#define	TKEY_F6		0x0f
+#define	TKEY_F7		0x10
+#define	TKEY_F8		0x11
+#define	TKEY_F9		0x12
+#define	TKEY_F10	0x13
+#define	TKEY_F11	0x14
+#define	TKEY_F12	0x15
+const char *teken_get_sequence(teken_t *, unsigned int);
+
+/* Legacy features. */
+void	teken_set_8bit(teken_t *);
+void	teken_set_cons25(teken_t *);
+
+/* Color conversion. */
+teken_color_t teken_256to8(teken_color_t);
+
+// !!! Start of Mojo addition.
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+// !!! End of Mojo addition.
+
+#endif /* !_TEKEN_H_ */