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221 lines
6.2 KiB
C
221 lines
6.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _TEKEN_H_
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#define _TEKEN_H_
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#include <sys/types.h>
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/*
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* libteken: terminal emulation library.
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*
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* This library converts an UTF-8 stream of bytes to terminal drawing
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* commands.
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*/
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typedef uint32_t teken_char_t;
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typedef unsigned short teken_unit_t;
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typedef unsigned char teken_format_t;
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#define TF_BOLD 0x01 /* Bold character. */
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#define TF_UNDERLINE 0x02 /* Underline character. */
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#define TF_BLINK 0x04 /* Blinking character. */
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#define TF_REVERSE 0x08 /* Reverse rendered character. */
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#define TF_CJK_RIGHT 0x10 /* Right-hand side of CJK character. */
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#define TF_IMAGE 0x20 /* This character space has image. */
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typedef unsigned char teken_color_t;
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#define TC_BLACK 0
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#define TC_RED 1
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#define TC_GREEN 2
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#define TC_YELLOW 3
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#define TC_BLUE 4
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#define TC_MAGENTA 5
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#define TC_CYAN 6
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#define TC_WHITE 7
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#define TC_NCOLORS 8
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#define TC_LIGHT 8 /* ORed with the others. */
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typedef struct {
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teken_unit_t tp_row;
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teken_unit_t tp_col;
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} teken_pos_t;
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typedef struct {
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teken_pos_t tr_begin;
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teken_pos_t tr_end;
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} teken_rect_t;
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typedef struct {
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teken_format_t ta_format;
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teken_color_t ta_fgcolor;
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teken_color_t ta_bgcolor;
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} teken_attr_t;
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typedef struct {
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teken_unit_t ts_begin;
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teken_unit_t ts_end;
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} teken_span_t;
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typedef struct __teken teken_t;
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typedef void teken_state_t(teken_t *, teken_char_t);
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/*
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* Drawing routines supplied by the user.
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*/
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typedef void tf_bell_t(void *);
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typedef void tf_cursor_t(void *, const teken_pos_t *);
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typedef void tf_putchar_t(void *, const teken_pos_t *, teken_char_t,
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const teken_attr_t *);
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typedef void tf_fill_t(void *, const teken_rect_t *, teken_char_t,
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const teken_attr_t *);
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typedef void tf_copy_t(void *, const teken_rect_t *, const teken_pos_t *);
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typedef void tf_pre_input_t(void *);
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typedef void tf_post_input_t(void *);
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typedef void tf_param_t(void *, int, unsigned int);
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#define TP_SHOWCURSOR 0
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#define TP_KEYPADAPP 1
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#define TP_AUTOREPEAT 2
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#define TP_SWITCHVT 3
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#define TP_132COLS 4
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#define TP_SETBELLPD 5
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#define TP_SETBELLPD_PITCH(pd) ((pd) >> 16)
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#define TP_SETBELLPD_DURATION(pd) ((pd) & 0xffff)
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#define TP_MOUSE 6
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#define TP_SETBORDER 7
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#define TP_SETLOCALCURSOR 8
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#define TP_SETGLOBALCURSOR 9
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typedef void tf_respond_t(void *, const void *, size_t);
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typedef struct {
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tf_bell_t *tf_bell;
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tf_cursor_t *tf_cursor;
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tf_putchar_t *tf_putchar;
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tf_fill_t *tf_fill;
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tf_copy_t *tf_copy;
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tf_pre_input_t *tf_pre_input;
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tf_post_input_t *tf_post_input;
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tf_param_t *tf_param;
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tf_respond_t *tf_respond;
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} teken_funcs_t;
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typedef teken_char_t teken_scs_t(const teken_t *, teken_char_t);
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/*
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* Terminal state.
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*/
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struct __teken {
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const teken_funcs_t *t_funcs;
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void *t_softc;
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teken_state_t *t_nextstate;
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unsigned int t_stateflags;
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#define T_NUMSIZE 8
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unsigned int t_nums[T_NUMSIZE];
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unsigned int t_curnum;
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teken_pos_t t_cursor;
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teken_attr_t t_curattr;
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teken_pos_t t_saved_cursor;
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teken_attr_t t_saved_curattr;
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teken_attr_t t_defattr;
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teken_pos_t t_winsize;
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/* For DECSTBM. */
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teken_span_t t_scrollreg;
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/* For DECOM. */
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teken_span_t t_originreg;
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#define T_NUMCOL 160
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unsigned int t_tabstops[T_NUMCOL / (sizeof(unsigned int) * 8)];
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unsigned int t_utf8_left;
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teken_char_t t_utf8_partial;
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teken_char_t t_last;
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unsigned int t_curscs;
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teken_scs_t *t_saved_curscs;
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teken_scs_t *t_scs[2];
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};
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/* Initialize teken structure. */
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void teken_init(teken_t *, const teken_funcs_t *, void *);
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/* Deliver character input. */
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void teken_input(teken_t *, const void *, size_t);
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/* Get/set teken attributes. */
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const teken_pos_t *teken_get_cursor(const teken_t *);
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const teken_attr_t *teken_get_curattr(const teken_t *);
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const teken_attr_t *teken_get_defattr(const teken_t *);
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void teken_get_defattr_cons25(const teken_t *, int *, int *);
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const teken_pos_t *teken_get_winsize(const teken_t *);
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void teken_set_cursor(teken_t *, const teken_pos_t *);
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void teken_set_curattr(teken_t *, const teken_attr_t *);
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void teken_set_defattr(teken_t *, const teken_attr_t *);
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void teken_set_winsize(teken_t *, const teken_pos_t *);
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void teken_set_winsize_noreset(teken_t *, const teken_pos_t *);
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/* Key input escape sequences. */
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#define TKEY_UP 0x00
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#define TKEY_DOWN 0x01
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#define TKEY_LEFT 0x02
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#define TKEY_RIGHT 0x03
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#define TKEY_HOME 0x04
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#define TKEY_END 0x05
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#define TKEY_INSERT 0x06
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#define TKEY_DELETE 0x07
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#define TKEY_PAGE_UP 0x08
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#define TKEY_PAGE_DOWN 0x09
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#define TKEY_F1 0x0a
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#define TKEY_F2 0x0b
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#define TKEY_F3 0x0c
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#define TKEY_F4 0x0d
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#define TKEY_F5 0x0e
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#define TKEY_F6 0x0f
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#define TKEY_F7 0x10
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#define TKEY_F8 0x11
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#define TKEY_F9 0x12
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#define TKEY_F10 0x13
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#define TKEY_F11 0x14
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#define TKEY_F12 0x15
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const char *teken_get_sequence(const teken_t *, unsigned int);
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/* Legacy features. */
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void teken_set_8bit(teken_t *);
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void teken_set_cons25(teken_t *);
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void teken_set_cons25keys(teken_t *);
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/* Color conversion. */
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teken_color_t teken_256to16(teken_color_t);
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teken_color_t teken_256to8(teken_color_t);
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#endif /* !_TEKEN_H_ */
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