#define NWW 30 /* maximum number of windows */
int nr
; /* number of rows */
int nc
; /* number of columns */
int t
, b
; /* top, bottom */
int l
, r
; /* left, right */
/* the window structure */
struct ww
*ww_forw
; /* doubly linked list, for overlapping info */
char ww_state
; /* state of window creation */
char ww_wstate
; /* state for printing charcters */
char ww_modes
; /* current printing modes */
char ww_insert
:1; /* insert mode, for printing */
char ww_mapnl
:1; /* map \n to \r\n */
char ww_hascursor
:1; /* has fake cursor */
char ww_hasframe
:1; /* frame it */
char ww_nointr
: 1; /* wwwrite() not interruptable */
char ww_index
; /* the index, for wwindex[] */
char ww_order
; /* the overlapping order */
/* sizes and positions */
struct ww_dim ww_w
; /* window size and pos */
struct ww_dim ww_b
; /* buffer size and pos */
struct ww_dim ww_i
; /* the part inside the screen */
struct ww_pos ww_cur
; /* the cursor position, relative to ww_w */
char **ww_win
; /* the window */
union ww_char
**ww_buf
; /* the buffer */
char **ww_fmap
; /* map for frame and box windows */
short *ww_nvis
; /* how many ww_buf chars are visible per row */
/* things for the window process and io */
int ww_pty
; /* file descriptor of pty */
int ww_pid
; /* pid of process, if WWS_HASPROC true */
char ww_ttyname
[11]; /* "/dev/ttyp?" */
char *ww_ob
; /* output buffer */
char *ww_obe
; /* end of ww_ob */
char *ww_obp
; /* current position in ww_ob */
int ww_obc
; /* character count */
char ww_stopped
; /* output stopped */
/* things for the user, they really don't belong here */
char ww_center
; /* center the label */
int ww_id
; /* the user window id */
char *ww_label
; /* the user supplied label */
struct ww_pos ww_altpos
;/* alternate position */
struct ltchars ww_ltchars
;
short c_w
; /* as a word */
char C_c
; /* the character part */
char C_m
; /* the mode part */
char C_m
; /* the mode part */
char C_c
; /* the character part */
#define WWM_REV 0x01 /* reverse video */
#define WWM_BLK 0x02 /* blinking */
#define WWM_UL 0x04 /* underlined */
#define WWM_GRP 0x08 /* graphics */
#define WWM_GLS 0x10 /* window only, glass, i.e. transparent */
#define WWS_INITIAL 0 /* just opened */
#define WWS_HASPROC 1 /* has process on pty */
#define WWS_DEAD 3 /* child died */
#define WWF_MASK (WWF_U|WWF_R|WWF_D|WWF_L)
#define WWO_PTY 0x01 /* want pty */
#define WWO_REVERSE 0x02 /* make it all reverse video */
#define WWO_GLASS 0x04 /* make it all glass */
#define WWO_FRAME 0x08 /* this is a frame window */
/* special ww_index value */
#define WWE_SYS 1 /* system error */
#define WWE_NOMEM 2 /* out of memory */
#define WWE_TOOMANY 3 /* too many windows */
#define WWE_NOPTY 4 /* no more ptys */
#define WWE_SIZE 5 /* bad window size */
#define WWE_BADTERM 6 /* bad terminal type */
#define WWE_CANTDO 7 /* dumb terminal */
#define WWU_TOUCHED 0x01 /* touched */
#define WWU_MAJOR 0x02 /* major change */
/* the window structures */
struct ww
*wwindex
[NWW
+ 1]; /* last location is for wwnobody */
struct ww_tty wwoldtty
; /* the old (saved) terminal settings */
struct ww_tty wwnewtty
; /* the new (current) terminal settings */
struct ww_tty wwwintty
; /* the terminal settings for windows */
char *wwterm
; /* the terminal name */
char wwtermcap
[1024]; /* place for the termcap */
char wwkeys
[512]; /* termcap fields for the function keys */
/* generally useful variables */
int wwnrow
, wwncol
; /* the screen size */
char wwavailmodes
; /* actually supported modes */
char wwcursormodes
; /* the modes for the fake cursor */
char wwwrap
; /* terminal has auto wrap around */
int wwdtablesize
; /* result of getdtablesize() call */
char **wwsmap
; /* the screen map */
union ww_char
**wwos
; /* the old (current) screen */
union ww_char
**wwns
; /* the new (desired) screen */
char *wwtouched
; /* wwns changed flags */
int wwbaudmap
[]; /* maps stty() baud rate code into number */
int wwbaud
; /* wwbaudmap[wwoldtty.ww_sgttyb.sg_ospeed] */
int wwcursorrow
, wwcursorcol
; /* where we want the cursor to be */
int wwerrno
; /* error number */
int wwnflush
, wwnwr
, wwnwre
, wwnwrz
, wwnwrc
;
int wwnwwr
, wwnwwra
, wwnwwrc
;
int wwnupdate
, wwnupdline
, wwnupdmiss
, wwnmajline
, wwnmajmiss
;
int wwnread
, wwnreade
, wwnreadz
, wwnreadc
;
int wwnwread
, wwnwreade
, wwnwreadz
, wwnwreadd
, wwnwreadc
, wwnwreadp
;
int wwnselect
, wwnselecte
, wwnselectz
;
#define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c))
#define wwcurtowin(w) wwsetcursor((w)->ww_cur.r, (w)->ww_cur.c)
#define wwunbox(w) wwunframe(w)
#define wwclreol(w,r,c) wwclreol1((w), (r), (c), 0)
#define wwredrawwin(w) wwredrawwin1((w), (w)->ww_i.t, (w)->ww_i.b, 0)
#define wwupdate() wwupdate1(0, wwnrow);
/* things for handling input */
int wwrint(); /* interrupt handler */
struct ww
*wwcurwin
; /* window to copy input into */
char wwsetjmp
; /* want a longjmp() from wwrint() */
jmp_buf wwjmpbuf
; /* jmpbuf for above */
char *wwib
; /* input (keyboard) buffer */
char *wwibe
; /* wwib + sizeof buffer */
char *wwibp
; /* current read position in buffer */
char *wwibq
; /* current write position in buffer */
#define wwgetc() (wwibp < wwibq ? *wwibp++ & 0x7f : -1)
#define wwpeekc() (wwibp < wwibq ? *wwibp & 0x7f : -1)
#define wwungetc(c) (wwibp > wwib ? *--wwibp = (c) : -1)
#define wwinterrupt() (wwibp < wwibq)
/* the window virtual terminal */
#define WWT_TERM "TERM=window"
#define WWT_TERMCAP "WW|window|window package:\
:al=\\EL:am:le=^H:bs:cd=\\EJ:ce=\\EK:cl=\\EE:cm=\\EY%+ %+ :\
:da:db:dc=\\EN:dl=\\EM:do=\\EB:ei=\\EO:ho=\\EH:im=\\E@:mi:\
:nd=\\EC:ta=^I:pt:up=\\EA:"
#define WWT_REV "se=\\Eq:so=\\Ep:"
#define WWT_UL "ue=\\Es:us=\\Er:"
#define WWT_GRP "ae=\\EG:as=\\EF:"
/* c library functions */
#define MIN(x, y) ((x) > (y) ? (y) : (x))
#define MAX(x, y) ((x) > (y) ? (x) : (y))
#define CTRL(c) ('c'&0x1f)
#define ISCTRL(c) ((c) < ' ' & (c) != '\t' || (c) >= DEL)
#if defined(O_4_1A)||defined(O_4_1C)
#define signal(s, v) sigset((s), (v))
#define sigmask(s) (1 << (s) - 1)
#define sighold(s) sigblock(sigmask(s))
#define sigrelse(s) sigsetmask(sigblock(0) & ~sigmask(s))