312 lines
10 KiB
C
312 lines
10 KiB
C
/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Edward Wang at The University of California, Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)ww.h 3.63 (Berkeley) 3/2/91
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* $Id: ww.h,v 1.2 1993/08/01 18:01:29 mycroft Exp $
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*/
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#ifdef OLD_TTY
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#include <sgtty.h>
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#else
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#include <termios.h>
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#endif
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#include <setjmp.h>
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#include <machine/endian.h>
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#define NWW 30 /* maximum number of windows */
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/* a rectangle */
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struct ww_dim {
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int nr; /* number of rows */
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int nc; /* number of columns */
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int t, b; /* top, bottom */
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int l, r; /* left, right */
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};
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/* a coordinate */
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struct ww_pos {
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int r; /* row */
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int c; /* column */
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};
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/* the window structure */
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struct ww {
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/* general flags and states */
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char ww_state; /* state of window */
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char ww_oflags; /* wwopen flags */
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/* information for overlap */
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struct ww *ww_forw; /* doubly linked list, for overlapping info */
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struct ww *ww_back;
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char ww_index; /* the window index, for wwindex[] */
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char ww_order; /* the overlapping order */
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/* sizes and positions */
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struct ww_dim ww_w; /* window size and pos */
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struct ww_dim ww_b; /* buffer size and pos */
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struct ww_dim ww_i; /* the part inside the screen */
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struct ww_pos ww_cur; /* the cursor position, relative to ww_w */
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/* arrays */
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char **ww_win; /* the window */
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union ww_char **ww_buf; /* the buffer */
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char **ww_fmap; /* map for frame and box windows */
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short *ww_nvis; /* how many ww_buf chars are visible per row */
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/* information for wwwrite() and company */
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char ww_wstate; /* state for outputting characters */
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char ww_modes; /* current display modes */
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char ww_insert; /* insert mode */
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char ww_mapnl; /* map \n to \r\n */
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char ww_noupdate; /* don't do updates in wwwrite() */
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char ww_unctrl; /* expand control characters */
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char ww_nointr; /* wwwrite() not interruptable */
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char ww_hascursor; /* has fake cursor */
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/* things for the window process and io */
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char ww_ispty; /* ww_pty is really a pty, not socket pair */
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char ww_stopped; /* output stopped */
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int ww_pty; /* file descriptor of pty or socket pair */
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int ww_socket; /* other end of socket pair */
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int ww_pid; /* pid of process, if WWS_HASPROC true */
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char ww_ttyname[11]; /* "/dev/ttyp?" */
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char *ww_ob; /* output buffer */
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char *ww_obe; /* end of ww_ob */
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char *ww_obp; /* current read position in ww_ob */
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char *ww_obq; /* current write position in ww_ob */
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/* things for the user, they really don't belong here */
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char ww_id; /* the user window id */
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char ww_center; /* center the label */
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char ww_hasframe; /* frame it */
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char ww_keepopen; /* keep it open after the process dies */
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char *ww_label; /* the user supplied label */
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struct ww_dim ww_alt; /* alternate position and size */
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};
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/* state of a tty */
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struct ww_tty {
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#ifdef OLD_TTY
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struct sgttyb ww_sgttyb;
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struct tchars ww_tchars;
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struct ltchars ww_ltchars;
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int ww_lmode;
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int ww_ldisc;
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#else
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struct termios ww_termios;
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#endif
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int ww_fflags;
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};
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union ww_char {
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short c_w; /* as a word */
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struct {
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#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
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char C_c; /* the character part */
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char C_m; /* the mode part */
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#endif
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#if BYTE_ORDER == BIG_ENDIAN
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char C_m; /* the mode part */
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char C_c; /* the character part */
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#endif
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} c_un;
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};
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#define c_c c_un.C_c
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#define c_m c_un.C_m
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/* for display update */
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struct ww_update {
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int best_gain;
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int best_col;
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int gain;
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};
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/* parts of ww_char */
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#define WWC_CMASK 0x00ff
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#define WWC_MMASK 0xff00
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#define WWC_MSHIFT 8
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/* c_m bits */
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#define WWM_REV 0x01 /* reverse video */
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#define WWM_BLK 0x02 /* blinking */
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#define WWM_UL 0x04 /* underlined */
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#define WWM_GRP 0x08 /* graphics */
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#define WWM_DIM 0x10 /* half intensity */
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#define WWM_USR 0x20 /* user specified mode */
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#define WWM_GLS 0x40 /* window only, glass, i.e., transparent */
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/* ww_state values */
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#define WWS_INITIAL 0 /* just opened */
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#define WWS_HASPROC 1 /* has process on pty */
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#define WWS_DEAD 3 /* child died */
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/* flags for ww_fmap */
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#define WWF_U 0x01
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#define WWF_R 0x02
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#define WWF_D 0x04
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#define WWF_L 0x08
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#define WWF_MASK (WWF_U|WWF_R|WWF_D|WWF_L)
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#define WWF_LABEL 0x40
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#define WWF_TOP 0x80
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/* flags to wwopen() */
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#define WWO_PTY 0x01 /* want pty */
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#define WWO_SOCKET 0x02 /* want socket pair */
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#define WWO_REVERSE 0x04 /* make it all reverse video */
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#define WWO_GLASS 0x08 /* make it all glass */
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#define WWO_FRAME 0x10 /* this is a frame window */
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/* special ww_index value */
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#define WWX_NOBODY NWW
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/* error codes */
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#define WWE_NOERR 0
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#define WWE_SYS 1 /* system error */
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#define WWE_NOMEM 2 /* out of memory */
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#define WWE_TOOMANY 3 /* too many windows */
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#define WWE_NOPTY 4 /* no more ptys */
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#define WWE_SIZE 5 /* bad window size */
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#define WWE_BADTERM 6 /* bad terminal type */
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#define WWE_CANTDO 7 /* dumb terminal */
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/* wwtouched[] bits, there used to be more than one */
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#define WWU_TOUCHED 0x01 /* touched */
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/* the window structures */
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struct ww wwhead;
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struct ww *wwindex[NWW + 1]; /* last location is for wwnobody */
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struct ww wwnobody;
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/* tty things */
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struct ww_tty wwoldtty; /* the old (saved) terminal settings */
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struct ww_tty wwnewtty; /* the new (current) terminal settings */
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struct ww_tty wwwintty; /* the terminal settings for windows */
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char *wwterm; /* the terminal name */
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char wwtermcap[1024]; /* place for the termcap */
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/* generally useful variables */
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int wwnrow, wwncol; /* the screen size */
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char wwavailmodes; /* actually supported modes */
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char wwcursormodes; /* the modes for the fake cursor */
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char wwwrap; /* terminal has auto wrap around */
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int wwdtablesize; /* result of getdtablesize() call */
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char **wwsmap; /* the screen map */
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union ww_char **wwos; /* the old (current) screen */
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union ww_char **wwns; /* the new (desired) screen */
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char *wwtouched; /* wwns changed flags */
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struct ww_update *wwupd; /* for display update */
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int wwospeed; /* output baud rate, copied from wwoldtty */
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int wwbaud; /* wwospeed converted into actual number */
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int wwcursorrow, wwcursorcol; /* where we want the cursor to be */
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int wwerrno; /* error number */
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/* statistics */
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int wwnflush, wwnwr, wwnwre, wwnwrz, wwnwrc;
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int wwnwwr, wwnwwra, wwnwwrc;
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int wwntokdef, wwntokuse, wwntokbad, wwntoksave, wwntokc;
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int wwnupdate, wwnupdline, wwnupdmiss;
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int wwnupdscan, wwnupdclreol, wwnupdclreos, wwnupdclreosmiss, wwnupdclreosline;
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int wwnread, wwnreade, wwnreadz, wwnreadc;
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int wwnwread, wwnwreade, wwnwreadz, wwnwreadd, wwnwreadc, wwnwreadp;
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int wwnselect, wwnselecte, wwnselectz;
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/* quicky macros */
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#define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c))
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#define wwcurtowin(w) wwsetcursor((w)->ww_cur.r, (w)->ww_cur.c)
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#define wwunbox(w) wwunframe(w)
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#define wwclreol(w,r,c) wwclreol1((w), (r), (c), 0)
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#define wwredrawwin(w) wwredrawwin1((w), (w)->ww_i.t, (w)->ww_i.b, 0)
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#define wwupdate() wwupdate1(0, wwnrow);
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/* things for handling input */
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void wwrint(); /* interrupt handler */
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struct ww *wwcurwin; /* window to copy input into */
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char *wwib; /* input (keyboard) buffer */
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char *wwibe; /* wwib + sizeof buffer */
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char *wwibp; /* current read position in buffer */
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char *wwibq; /* current write position in buffer */
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#define wwgetc() (wwibp < wwibq ? *wwibp++ & 0x7f : -1)
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#define wwpeekc() (wwibp < wwibq ? *wwibp & 0x7f : -1)
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#define wwungetc(c) (wwibp > wwib ? *--wwibp = (c) : -1)
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/* things for short circuiting wwiomux() */
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char wwintr; /* interrupting */
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char wwsetjmp; /* want a longjmp() from wwrint() and wwchild() */
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jmp_buf wwjmpbuf; /* jmpbuf for above */
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#define wwinterrupt() wwintr
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#define wwsetintr() do { wwintr = 1; if (wwsetjmp) longjmp(wwjmpbuf, 1); } \
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while (0)
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#define wwclrintr() (wwintr = 0)
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/* the window virtual terminal */
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#define WWT_TERM "window-v2"
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#define WWT_TERMCAP "WW|window-v2|window program version 2:\
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:am:bs:da:db:ms:pt:cr=^M:nl=^J:bl=^G:ta=^I:\
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:cm=\\EY%+ %+ :le=^H:nd=\\EC:up=\\EA:do=\\EB:ho=\\EH:\
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:cd=\\EJ:ce=\\EK:cl=\\EE:me=\\Er^?:"
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#define WWT_REV "se=\\ErA:so=\\EsA:mr=\\EsA:"
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#define WWT_BLK "BE=\\ErB:BS=\\EsB:mb=\\EsB:"
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#define WWT_UL "ue=\\ErD:us=\\EsD:"
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#define WWT_GRP "ae=\\ErH:as=\\EsH:"
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#define WWT_DIM "HE=\\ErP:HS=\\EsP:mh=\\EsP:"
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#define WWT_USR "XE=\\Er`:XS=\\Es`:"
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#define WWT_ALDL "al=\\EL:dl=\\EM:"
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#define WWT_IMEI "im=\\E@:ei=\\EO:ic=:mi:" /* XXX, ic for emacs bug */
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#define WWT_IC "ic=\\EP:"
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#define WWT_DC "dc=\\EN:"
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char wwwintermcap[1024]; /* terminal-specific but window-independent
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part of the window termcap */
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/* our functions */
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struct ww *wwopen();
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void wwchild();
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void wwsuspend();
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char **wwalloc();
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char *wwerror();
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/* c library functions */
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char *malloc();
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char *calloc();
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char *getenv();
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char *tgetstr();
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char *rindex();
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char *strcpy();
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char *strcat();
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#undef MIN
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#undef MAX
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#define MIN(x, y) ((x) > (y) ? (y) : (x))
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#define MAX(x, y) ((x) > (y) ? (x) : (y))
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