/* Copyright (c) 1979 Regents of the University of California */ /* * Capabilities from termcap * * The description of terminals is a difficult business, and we only * attempt to summarize the capabilities here; for a full description * see the paper describing termcap. * * Capabilities from termcap are of three kinds - string valued options, * numeric valued options, and boolean options. The string valued options * are the most complicated, since they may include padding information, * which we describe now. * * Intelligent terminals often require padding on intelligent operations * at high (and sometimes even low) speed. This is specified by * a number before the string in the capability, and has meaning for the * capabilities which have a P at the front of their comment. * This normally is a number of milliseconds to pad the operation. * In the current system which has no true programmible delays, we * do this by sending a sequence of pad characters (normally nulls, but * specifiable as "pc"). In some cases, the pad is better computed * as some number of milliseconds times the number of affected lines * (to bottom of screen usually, except when terminals have insert modes * which will shift several lines.) This is specified as '12*' e.g. * before the capability to say 12 milliseconds per affected whatever * (currently always line). Capabilities where this makes sense say P*. */ char tspace[128]; /* Space for capability strings */ char *aoftspace; /* Address of tspace for relocation */ char *AL; /* P* Add new blank line */ char *BC; /* Back cursor */ char *CD; /* P* Clear to end of display */ char *CE; /* P Clear to end of line */ char *CL; /* P* Clear screen */ char *CM; /* P Cursor motion */ char *DC; /* P* Delete character */ char *DL; /* P* Delete line sequence */ char *DM; /* Delete mode (enter) */ char *DO; /* Down line sequence */ char *ED; /* End delete mode */ char *EI; /* End insert mode */ char *HO; /* Home cursor */ char *IC; /* P Insert character */ char *IM; /* Insert mode (give as ':im=:' if 'ic' */ char *IP; /* P* Insert pad after char ins'd using IM+IE */ char *LL; /* Quick to last line, column 0 */ char *MA; /* Control character map for cmd mode */ char *ND; /* Non-destructive space */ char PC; /* Pad character */ char *SE; /* Standout end (may leave space) */ char *SF; /* P Scroll forwards */ char *SO; /* Stand out begin (may leave space) */ char *SR; /* P Scroll backwards */ char *TA; /* P Tab (other than ^I or with padding) */ char *UP; /* Upline */ char *VB; /* Visible bell */ char *VE; /* Visual end sequence */ char *VS; /* Visual start sequence */ bool AM; /* Automatic margins */ bool BS; /* Backspace works */ bool CA; /* Cursor addressible */ bool DA; /* Display may be retained above */ bool DB; /* Display may be retained below */ bool EO; /* Can erase overstrikes with ' ' */ bool GT; /* Gtty indicates tabs */ bool HZ; /* Hazeltine ~ braindamage */ bool IN; /* Insert-null blessing */ bool MI; /* can move in insert mode */ bool NC; /* No Cr - \r snds \r\n then eats \n (dm2500) */ bool OS; /* Overstrike works */ bool UL; /* Underlining works even though !os */ bool XN; /* A newline gets eaten after wrap (concept) */ /* X? is reserved for severely nauseous glitches */ /* If there are enough of these we may need bit masks! */ /* * From the tty modes... */ bool NONL; /* Terminal can't hack linefeeds doing a CR */ bool UPPERCASE; /* Ick! */ short LINES; /* Number of lines on screen */ short COLUMNS; short OCOLUMNS; /* Save COLUMNS for a hack in open mode */ short outcol; /* Where the cursor is */ short outline; short destcol; /* Where the cursor should be */ short destline; struct sgttyb tty; /* Always stty/gtty using this one structure */ bool normtty; /* Have to restor normal mode from normf */ int normf; /* Restore tty flags to this (someday) */ short WBOT; short WECHO;