FreeBSD/Linux Kernel Cross Reference
sys/teken/teken.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _TEKEN_H_
    #define _TEKEN_H_
    
    #include <sys/types.h>
    
    /*
     * libteken: terminal emulation library.
     *
     * This library converts an UTF-8 stream of bytes to terminal drawing
     * commands.
     */
    
    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. */
    #define TF_IMAGE        0x20    /* This character space has image. */
    typedef unsigned char teken_color_t;
    #define TC_BLACK        0
    #define TC_RED          1
    #define TC_GREEN        2
    #define TC_YELLOW       3
    #define TC_BLUE         4
    #define TC_MAGENTA      5
    #define TC_CYAN         6
    #define TC_WHITE        7
    #define TC_NCOLORS      8
    #define TC_LIGHT        8       /* ORed with the others. */
    
    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_pre_input_t(void *);
    typedef void tf_post_input_t(void *);
    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
   #define TP_SETBORDER    7
   #define TP_SETLOCALCURSOR       8
   #define TP_SETGLOBALCURSOR      9
   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_pre_input_t  *tf_pre_input;
           tf_post_input_t *tf_post_input;
           tf_param_t      *tf_param;
           tf_respond_t    *tf_respond;
   } teken_funcs_t;
   
   typedef teken_char_t teken_scs_t(const 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;
           teken_char_t     t_last;
   
           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(const teken_t *);
   const teken_attr_t *teken_get_curattr(const teken_t *);
   const teken_attr_t *teken_get_defattr(const teken_t *);
   void    teken_get_defattr_cons25(const teken_t *, int *, int *);
   const teken_pos_t *teken_get_winsize(const 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(const teken_t *, unsigned int);
   
   /* Legacy features. */
   void    teken_set_8bit(teken_t *);
   void    teken_set_cons25(teken_t *);
   void    teken_set_cons25keys(teken_t *);
   
   /* Color conversion. */
   teken_color_t teken_256to16(teken_color_t);
   teken_color_t teken_256to8(teken_color_t);
   
   #endif /* !_TEKEN_H_ */

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