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Annotation of 43BSDReno/usr.bin/window/tt.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Edward Wang at The University of California, Berkeley.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms are permitted provided
        !             9:  * that: (1) source distributions retain this entire copyright notice and
        !            10:  * comment, and (2) distributions including binaries display the following
        !            11:  * acknowledgement:  ``This product includes software developed by the
        !            12:  * University of California, Berkeley and its contributors'' in the
        !            13:  * documentation or other materials provided with the distribution and in
        !            14:  * all advertising materials mentioning features or use of this software.
        !            15:  * Neither the name of the University nor the names of its contributors may
        !            16:  * be used to endorse or promote products derived from this software without
        !            17:  * specific prior written permission.
        !            18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            21:  *
        !            22:  *     @(#)tt.h        3.27 (Berkeley) 6/6/90
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  * Interface structure for the terminal drivers.
        !            27:  */
        !            28: struct tt {
        !            29:                /* startup and cleanup */
        !            30:        int (*tt_start)();
        !            31:        int (*tt_end)();
        !            32: 
        !            33:                /* terminal functions */
        !            34:        int (*tt_move)();
        !            35:        int (*tt_insline)();
        !            36:        int (*tt_delline)();
        !            37:        int (*tt_inschar)();
        !            38:        int (*tt_insspace)();
        !            39:        int (*tt_delchar)();
        !            40:        int (*tt_write)();              /* write a whole block */
        !            41:        int (*tt_putc)();               /* write one character */
        !            42:        int (*tt_clreol)();
        !            43:        int (*tt_clreos)();
        !            44:        int (*tt_clear)();
        !            45:        int (*tt_scroll_down)();
        !            46:        int (*tt_scroll_up)();
        !            47:        int (*tt_setscroll)();          /* set scrolling region */
        !            48:        int (*tt_setmodes)();           /* set display modes */
        !            49:        int (*tt_set_token)();          /* define a token */
        !            50:        int (*tt_put_token)();          /* refer to a defined token */
        !            51: 
        !            52:                /* internal variables */
        !            53:        char tt_modes;                  /* the current display modes */
        !            54:        char tt_nmodes;                 /* the new modes for next write */
        !            55:        char tt_insert;                 /* currently in insert mode */
        !            56:        int tt_row;                     /* cursor row */
        !            57:        int tt_col;                     /* cursor column */
        !            58:        int tt_scroll_top;              /* top of scrolling region */
        !            59:        int tt_scroll_bot;              /* bottom of scrolling region */
        !            60: 
        !            61:                /* terminal info */
        !            62:        int tt_nrow;                    /* number of display rows */
        !            63:        int tt_ncol;                    /* number of display columns */
        !            64:        char tt_availmodes;             /* the display modes supported */
        !            65:        char tt_wrap;                   /* has auto wrap around */
        !            66:        char tt_retain;                 /* can retain below (db flag) */
        !            67:        short tt_padc;                  /* the pad character */
        !            68:        int tt_ntoken;                  /* number of compression tokens */
        !            69:        int tt_token_min;               /* minimun token size */
        !            70:        int tt_token_max;               /* maximum token size */
        !            71:        int tt_set_token_cost;          /* cost in addition to string */
        !            72:        int tt_put_token_cost;          /* constant cost */
        !            73: 
        !            74:                /* the frame characters */
        !            75:        short *tt_frame;
        !            76: 
        !            77:                /* the output routine */
        !            78:        int (*tt_flush)();
        !            79: };
        !            80: struct tt tt;
        !            81: 
        !            82: /*
        !            83:  * tt_padc is used by the compression routine.
        !            84:  * It is a short to allow the driver to indicate that there is no padding.
        !            85:  */
        !            86: #define TT_PADC_NONE 0x100
        !            87: 
        !            88: /*
        !            89:  * List of terminal drivers.
        !            90:  */
        !            91: struct tt_tab {
        !            92:        char *tt_name;
        !            93:        int tt_len;
        !            94:        int (*tt_func)();
        !            95: };
        !            96: extern struct tt_tab tt_tab[];
        !            97: 
        !            98: /*
        !            99:  * Clean interface to termcap routines.
        !           100:  * Too may t's.
        !           101:  */
        !           102: char tt_strings[1024];         /* string buffer */
        !           103: char *tt_strp;                 /* pointer for it */
        !           104: 
        !           105: struct tt_str {
        !           106:        char *ts_str;
        !           107:        int ts_n;
        !           108: };
        !           109: 
        !           110: struct tt_str *tttgetstr();
        !           111: struct tt_str *ttxgetstr();    /* tgetstr() and expand delays */
        !           112: 
        !           113: int tttputc();
        !           114: #define tttputs(s, n)  tputs((s)->ts_str, (n), tttputc)
        !           115: #define ttxputs(s)     ttwrite((s)->ts_str, (s)->ts_n)
        !           116: 
        !           117: /*
        !           118:  * Buffered output without stdio.
        !           119:  * These variables have different meanings from the ww_ob* variables.
        !           120:  * But I'm too lazy to think up different names.
        !           121:  */
        !           122: char *tt_ob;
        !           123: char *tt_obp;
        !           124: char *tt_obe;
        !           125: #define ttputc(c)      (tt_obp < tt_obe ? (*tt_obp++ = (c)) \
        !           126:                                : ((*tt.tt_flush)(), *tt_obp++ = (c)))
        !           127: 
        !           128: /*
        !           129:  * Convenience macros for the drivers
        !           130:  * They require char.h
        !           131:  */
        !           132: #define ttctrl(c)      ttputc(ctrl(c))
        !           133: #define ttesc(c)       (ttctrl('['), ttputc(c))

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