2.9BSD - /usr/src/ucb/ex/ex2/ex_tty.h

   1: /* Copyright (c) 1979 Regents of the University of California */
   2: /*
   3:  * Capabilities from termcap
   4:  *
   5:  * The description of terminals is a difficult business, and we only
   6:  * attempt to summarize the capabilities here;  for a full description
   7:  * see the paper describing termcap.
   8:  *
   9:  * Capabilities from termcap are of three kinds - string valued options,
  10:  * numeric valued options, and boolean options.  The string valued options
  11:  * are the most complicated, since they may include padding information,
  12:  * which we describe now.
  13:  *
  14:  * Intelligent terminals often require padding on intelligent operations
  15:  * at high (and sometimes even low) speed.  This is specified by
  16:  * a number before the string in the capability, and has meaning for the
  17:  * capabilities which have a P at the front of their comment.
  18:  * This normally is a number of milliseconds to pad the operation.
  19:  * In the current system which has no true programmible delays, we
  20:  * do this by sending a sequence of pad characters (normally nulls, but
  21:  * specifiable as "pc").  In some cases, the pad is better computed
  22:  * as some number of milliseconds times the number of affected lines
  23:  * (to bottom of screen usually, except when terminals have insert modes
  24:  * which will shift several lines.)  This is specified as '12*' e.g.
  25:  * before the capability to say 12 milliseconds per affected whatever
  26:  * (currently always line).  Capabilities where this makes sense say P*.
  27:  */
  28: char    tspace[256];        /* Space for capability strings */
  29: char    *aoftspace;     /* Address of tspace for relocation */
  30: 
  31: char    *AL;            /* P* Add new blank line */
  32: char    *BC;            /*    Back cursor */
  33: char    *BT;            /* P  Back tab */
  34: char    *CD;            /* P* Clear to end of display */
  35: char    *CE;            /* P  Clear to end of line */
  36: char    *CL;            /* P* Clear screen */
  37: char    *CM;            /* P  Cursor motion */
  38: char    *xCR;           /* P  Carriage return */
  39: char    *DC;            /* P* Delete character */
  40: char    *DL;            /* P* Delete line sequence */
  41: char    *DM;            /*    Delete mode (enter)  */
  42: char    *DO;            /*    Down line sequence */
  43: char    *ED;            /*    End delete mode */
  44: char    *EI;            /*    End insert mode */
  45: char    *HO;            /*    Home cursor */
  46: char    *IC;            /* P  Insert character */
  47: char    *IM;            /*    Insert mode (give as ':im=:' if 'ic' */
  48: char    *IP;            /* P* Insert pad after char ins'd using IM+IE */
  49: char    *LL;            /*    Quick to last line, column 0 */
  50: char    *MA;            /*    Control character map for cmd mode */
  51: char    *ND;            /*    Non-destructive space */
  52: char    *xNL;           /*    Line feed (new line) */
  53: char    PC;         /*    Pad character */
  54: char    *SE;            /*    Standout end (may leave space) */
  55: char    *SF;            /* P  Scroll forwards */
  56: char    *SO;            /*    Stand out begin (may leave space) */
  57: char    *SR;            /* P  Scroll backwards */
  58: char    *TA;            /* P  Tab (other than ^I or with padding) */
  59: char    *TE;            /*    Terminal end sequence */
  60: char    *TI;            /*    Terminal initial sequence */
  61: char    *UP;            /*    Upline */
  62: char    *VB;            /*    Visible bell */
  63: char    *VE;            /*    Visual end sequence */
  64: char    *VS;            /*    Visual start sequence */
  65: bool    AM;         /* Automatic margins */
  66: bool    BS;         /* Backspace works */
  67: bool    CA;         /* Cursor addressible */
  68: bool    DA;         /* Display may be retained above */
  69: bool    DB;         /* Display may be retained below */
  70: bool    EO;         /* Can erase overstrikes with ' ' */
  71: bool    GT;         /* Gtty indicates tabs */
  72: bool    HC;         /* Hard copy terminal */
  73: bool    HZ;         /* Hazeltine ~ braindamage */
  74: bool    IN;         /* Insert-null blessing */
  75: bool    MI;         /* can move in insert mode */
  76: bool    NC;         /* No Cr - \r snds \r\n then eats \n (dm2500) */
  77: bool    NS;         /* No scroll - linefeed at bottom won't scroll */
  78: bool    OS;         /* Overstrike works */
  79: bool    UL;         /* Underlining works even though !os */
  80: bool    XB;         /* Beehive superbee f1=esc, f2=^C */
  81: bool    XN;         /* A newline gets eaten after wrap (concept) */
  82: bool    XT;         /* Tabs are destructive */
  83: bool    XX;         /* Tektronix 4025/4027 */
  84:     /* X? is reserved for severely nauseous glitches */
  85:     /* If there are enough of these we may need bit masks! */
  86: 
  87: /*
  88:  * From the tty modes...
  89:  */
  90: bool    NONL;           /* Terminal can't hack linefeeds doing a CR */
  91: bool    UPPERCASE;      /* Ick! */
  92: short   LINES;          /* Number of lines on screen */
  93: short   COLUMNS;
  94: short   OCOLUMNS;       /* Save COLUMNS for a hack in open mode */
  95: 
  96: short   outcol;         /* Where the cursor is */
  97: short   outline;
  98: 
  99: short   destcol;        /* Where the cursor should be */
 100: short   destline;
 101: 
 102: /*
 103:  * There are several kinds of tty drivers to contend with.  These include:
 104:  * (1)	V6:		no CBREAK, no ioctl.  (Include PWB V1 here.)
 105:  * (2)	V7 research:	has CBREAK, has ioctl, and has the tchars (TIOCSETC)
 106:  *			business to change start, stop, etc. chars.
 107:  * (3)	USG V2:		Basically like V6 but RAW mode is like V7 RAW.
 108:  *			(We treat it as V6.)
 109:  * (4)	USG V3:		equivalent to V7 but totally incompatible.
 110:  *
 111:  * The following attempts to decide what we are on, and declare
 112:  * some variables in the appropriate format.  The wierd looking one (ttymode)
 113:  * is the thing we pass to sTTY and family to turn "RAW" mode on or off
 114:  * when we go into or out of visual mode.  In V7/V6 it's just the flags word
 115:  * to stty.  In USG V3 it's the whole tty structure.
 116:  */
 117: #ifdef USG3TTY
 118:     struct  termio  tty;    /* Use this one structure to change modes */
 119:     typedef struct termio ttymode;  /* Mode to contain tty flags */
 120: #else
 121:     struct  sgttyb tty; /* Always stty/gtty using this one structure */
 122:     typedef int ttymode;    /* Mode to contain tty flags */
 123: # ifdef     TIOCSETC
 124:     struct  tchars ottyc, nttyc;    /* For V7 character masking */
 125: # endif
 126: #endif
 127: ttymode normf;          /* Restore tty flags to this (someday) */
 128: bool    normtty;        /* Have to restor normal mode from normf */
 129: 
 130: ttymode ostart(), setty(), unixex();
 131: 
 132: short   WBOT;
 133: short   WECHO;
 134: 
 135: short   costCM;

Defined variables

Defined typedef's

Usage of this include