freebsd-dev/usr.bin/window/ww.h
1994-12-18 11:59:37 +00:00

320 lines
11 KiB
C

/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)ww.h 8.1 (Berkeley) 6/6/93
*/
#ifdef OLD_TTY
#include <sgtty.h>
#else
#include <termios.h>
#endif
#include <setjmp.h>
#include <machine/endian.h>
#define NWW 30 /* maximum number of windows */
/* a rectangle */
struct ww_dim {
int nr; /* number of rows */
int nc; /* number of columns */
int t, b; /* top, bottom */
int l, r; /* left, right */
};
/* a coordinate */
struct ww_pos {
int r; /* row */
int c; /* column */
};
/* the window structure */
struct ww {
/* general flags and states */
char ww_state; /* state of window */
char ww_oflags; /* wwopen flags */
/* information for overlap */
struct ww *ww_forw; /* doubly linked list, for overlapping info */
struct ww *ww_back;
char ww_index; /* the window 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 */
/* arrays */
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 */
/* information for wwwrite() and company */
char ww_wstate; /* state for outputting characters */
char ww_modes; /* current display modes */
char ww_insert; /* insert mode */
char ww_mapnl; /* map \n to \r\n */
char ww_noupdate; /* don't do updates in wwwrite() */
char ww_unctrl; /* expand control characters */
char ww_nointr; /* wwwrite() not interruptable */
char ww_hascursor; /* has fake cursor */
/* things for the window process and io */
char ww_ispty; /* ww_pty is really a pty, not socket pair */
char ww_stopped; /* output stopped */
int ww_pty; /* file descriptor of pty or socket pair */
int ww_socket; /* other end of socket pair */
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 read position in ww_ob */
char *ww_obq; /* current write position in ww_ob */
/* things for the user, they really don't belong here */
char ww_id; /* the user window id */
char ww_center; /* center the label */
char ww_hasframe; /* frame it */
char ww_keepopen; /* keep it open after the process dies */
char *ww_label; /* the user supplied label */
struct ww_dim ww_alt; /* alternate position and size */
};
/* state of a tty */
struct ww_tty {
#ifdef OLD_TTY
struct sgttyb ww_sgttyb;
struct tchars ww_tchars;
struct ltchars ww_ltchars;
int ww_lmode;
int ww_ldisc;
#else
struct termios ww_termios;
#endif
int ww_fflags;
};
union ww_char {
short c_w; /* as a word */
struct {
#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
char C_c; /* the character part */
char C_m; /* the mode part */
#endif
#if BYTE_ORDER == BIG_ENDIAN
char C_m; /* the mode part */
char C_c; /* the character part */
#endif
} c_un;
};
#define c_c c_un.C_c
#define c_m c_un.C_m
/* for display update */
struct ww_update {
int best_gain;
int best_col;
int gain;
};
/* parts of ww_char */
#define WWC_CMASK 0x00ff
#define WWC_MMASK 0xff00
#define WWC_MSHIFT 8
/* c_m bits */
#define WWM_REV 0x01 /* reverse video */
#define WWM_BLK 0x02 /* blinking */
#define WWM_UL 0x04 /* underlined */
#define WWM_GRP 0x08 /* graphics */
#define WWM_DIM 0x10 /* half intensity */
#define WWM_USR 0x20 /* user specified mode */
#define WWM_GLS 0x40 /* window only, glass, i.e., transparent */
/* ww_state values */
#define WWS_INITIAL 0 /* just opened */
#define WWS_HASPROC 1 /* has process on pty */
#define WWS_DEAD 3 /* child died */
/* flags for ww_fmap */
#define WWF_U 0x01
#define WWF_R 0x02
#define WWF_D 0x04
#define WWF_L 0x08
#define WWF_MASK (WWF_U|WWF_R|WWF_D|WWF_L)
#define WWF_LABEL 0x40
#define WWF_TOP 0x80
/* flags to wwopen() */
#define WWO_PTY 0x01 /* want pty */
#define WWO_SOCKET 0x02 /* want socket pair */
#define WWO_REVERSE 0x04 /* make it all reverse video */
#define WWO_GLASS 0x08 /* make it all glass */
#define WWO_FRAME 0x10 /* this is a frame window */
/* special ww_index value */
#define WWX_NOBODY NWW
/* error codes */
#define WWE_NOERR 0
#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 */
/* wwtouched[] bits, there used to be more than one */
#define WWU_TOUCHED 0x01 /* touched */
/* the window structures */
struct ww wwhead;
struct ww *wwindex[NWW + 1]; /* last location is for wwnobody */
struct ww wwnobody;
/* tty things */
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 */
/* 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 */
union ww_char **wwcs; /* the checkpointed screen */
char *wwtouched; /* wwns changed flags */
struct ww_update *wwupd; /* for display update */
int wwospeed; /* output baud rate, copied from wwoldtty */
int wwbaud; /* wwospeed converted into actual number */
int wwcursorrow, wwcursorcol; /* where we want the cursor to be */
int wwerrno; /* error number */
/* statistics */
int wwnflush, wwnwr, wwnwre, wwnwrz, wwnwrc;
int wwnwwr, wwnwwra, wwnwwrc;
int wwntokdef, wwntokuse, wwntokbad, wwntoksave, wwntokc;
int wwnupdate, wwnupdline, wwnupdmiss;
int wwnupdscan, wwnupdclreol, wwnupdclreos, wwnupdclreosmiss, wwnupdclreosline;
int wwnread, wwnreade, wwnreadz;
int wwnreadc, wwnreadack, wwnreadnack, wwnreadstat, wwnreadec;
int wwnwread, wwnwreade, wwnwreadz, wwnwreadd, wwnwreadc, wwnwreadp;
int wwnselect, wwnselecte, wwnselectz;
/* quicky macros */
#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 */
void wwrint(); /* interrupt handler */
struct ww *wwcurwin; /* window to copy input into */
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 wwmaskc(c) ((c) & 0xff)
#define wwgetc() (wwibp < wwibq ? wwmaskc(*wwibp++) : -1)
#define wwpeekc() (wwibp < wwibq ? wwmaskc(*wwibp) : -1)
#define wwungetc(c) (wwibp > wwib ? *--wwibp = (c) : -1)
/* things for short circuiting wwiomux() */
char wwintr; /* interrupting */
char wwsetjmp; /* want a longjmp() from wwrint() and wwchild() */
jmp_buf wwjmpbuf; /* jmpbuf for above */
#define wwinterrupt() wwintr
#define wwsetintr() do { wwintr = 1; if (wwsetjmp) longjmp(wwjmpbuf, 1); } \
while (0)
#define wwclrintr() (wwintr = 0)
/* checkpointing */
int wwdocheckpoint;
/* the window virtual terminal */
#define WWT_TERM "window-v2"
#define WWT_TERMCAP "WW|window-v2|window program version 2:\
:am:bs:da:db:ms:pt:cr=^M:nl=^J:bl=^G:ta=^I:\
:cm=\\EY%+ %+ :le=^H:nd=\\EC:up=\\EA:do=\\EB:ho=\\EH:\
:cd=\\EJ:ce=\\EK:cl=\\EE:me=\\Er^?:"
#define WWT_REV "se=\\ErA:so=\\EsA:mr=\\EsA:"
#define WWT_BLK "BE=\\ErB:BS=\\EsB:mb=\\EsB:"
#define WWT_UL "ue=\\ErD:us=\\EsD:"
#define WWT_GRP "ae=\\ErH:as=\\EsH:"
#define WWT_DIM "HE=\\ErP:HS=\\EsP:mh=\\EsP:"
#define WWT_USR "XE=\\Er`:XS=\\Es`:"
#define WWT_ALDL "al=\\EL:dl=\\EM:"
#define WWT_IMEI "im=\\E@:ei=\\EO:ic=:mi:" /* XXX, ic for emacs bug */
#define WWT_IC "ic=\\EP:"
#define WWT_DC "dc=\\EN:"
char wwwintermcap[1024]; /* terminal-specific but window-independent
part of the window termcap */
#ifdef TERMINFO
/* where to put the temporary terminfo directory */
char wwterminfopath[1024];
#endif
/* our functions */
struct ww *wwopen();
void wwchild();
void wwalarm();
void wwquit();
char **wwalloc();
char *wwerror();
/* c library functions */
char *getenv();
char *tgetstr();
char *rindex();
char *strcpy();
char *strcat();
#undef MIN
#undef MAX
#define MIN(x, y) ((x) > (y) ? (y) : (x))
#define MAX(x, y) ((x) > (y) ? (x) : (y))