[unix-history] / usr.bin / window / ww.h

/*
 * Copyright (c) 1983 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	3.63 (Berkeley) 3/2/91
 */

#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 */
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, wwnreadc;
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 wwgetc()	(wwibp < wwibq ? *wwibp++ & 0x7f : -1)
#define wwpeekc()	(wwibp < wwibq ? *wwibp & 0x7f : -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)

	/* 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 */

	/* our functions */
struct ww *wwopen();
void wwchild();
void wwsuspend();
char **wwalloc();
char *wwerror();

	/* c library functions */
char *malloc();
char *calloc();
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))
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1983 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Edward Wang at The University of California, Berkeley.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. All advertising materials mentioning features or use of this software
	17	* must display the following acknowledgement:
	18	* This product includes software developed by the University of
	19	* California, Berkeley and its contributors.
	20	* 4. Neither the name of the University nor the names of its contributors
	21	* may be used to endorse or promote products derived from this software
	22	* without specific prior written permission.
	23	*
	24	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	25	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	27	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	30	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	31	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	32	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	33	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	34	* SUCH DAMAGE.
	35	*
	36	* @(#)ww.h 3.63 (Berkeley) 3/2/91
	37	*/
	38
	39	#ifdef OLD_TTY
	40	#include <sgtty.h>
	41	#else
	42	#include <termios.h>
	43	#endif
	44	#include <setjmp.h>
	45	#include <machine/endian.h>
	46
	47	#define NWW 30 /* maximum number of windows */
	48
	49	/* a rectangle */
	50	struct ww_dim {
	51	int nr; /* number of rows */
	52	int nc; /* number of columns */
	53	int t, b; /* top, bottom */
	54	int l, r; /* left, right */
	55	};
	56
	57	/* a coordinate */
	58	struct ww_pos {
	59	int r; /* row */
	60	int c; /* column */
	61	};
	62
	63	/* the window structure */
	64	struct ww {
65	/* general flags and states */
66	char ww_state; /* state of window */
67	char ww_oflags; /* wwopen flags */
68
69	/* information for overlap */
70	struct ww ww_forw; / doubly linked list, for overlapping info */
71	struct ww *ww_back;
72	char ww_index; /* the window index, for wwindex[] */
73	char ww_order; /* the overlapping order */
74
75	/* sizes and positions */
76	struct ww_dim ww_w; /* window size and pos */
77	struct ww_dim ww_b; /* buffer size and pos */
78	struct ww_dim ww_i; /* the part inside the screen */
79	struct ww_pos ww_cur; /* the cursor position, relative to ww_w */
80
81	/* arrays */
82	char *ww_win; / the window */
83	union ww_char *ww_buf; / the buffer */
84	char *ww_fmap; / map for frame and box windows */
85	short ww_nvis; / how many ww_buf chars are visible per row */
86
87	/* information for wwwrite() and company */
88	char ww_wstate; /* state for outputting characters */
89	char ww_modes; /* current display modes */
90	char ww_insert; /* insert mode */
91	char ww_mapnl; /* map \n to \r\n */
92	char ww_noupdate; /* don't do updates in wwwrite() */
93	char ww_unctrl; /* expand control characters */
94	char ww_nointr; /* wwwrite() not interruptable */
95	char ww_hascursor; /* has fake cursor */
96
97	/* things for the window process and io */
98	char ww_ispty; /* ww_pty is really a pty, not socket pair */
99	char ww_stopped; /* output stopped */
100	int ww_pty; /* file descriptor of pty or socket pair */
101	int ww_socket; /* other end of socket pair */
102	int ww_pid; /* pid of process, if WWS_HASPROC true */
103	char ww_ttyname[11]; /* "/dev/ttyp?" */
104	char ww_ob; / output buffer */
105	char ww_obe; / end of ww_ob */
106	char ww_obp; / current read position in ww_ob */
107	char ww_obq; / current write position in ww_ob */
108
109	/* things for the user, they really don't belong here */
110	char ww_id; /* the user window id */
111	char ww_center; /* center the label */
112	char ww_hasframe; /* frame it */
113	char ww_keepopen; /* keep it open after the process dies */
114	char ww_label; / the user supplied label */
115	struct ww_dim ww_alt; /* alternate position and size */
116	};
117
118	/* state of a tty */
119	struct ww_tty {
120	#ifdef OLD_TTY
121	struct sgttyb ww_sgttyb;
122	struct tchars ww_tchars;
123	struct ltchars ww_ltchars;
124	int ww_lmode;
125	int ww_ldisc;
126	#else
127	struct termios ww_termios;
128	#endif
129	int ww_fflags;
130	};
131
132	union ww_char {
133	short c_w; /* as a word */
134	struct {
135	#if BYTE_ORDER == LITTLE_ENDIAN \|\| BYTE_ORDER == PDP_ENDIAN
136	char C_c; /* the character part */
137	char C_m; /* the mode part */
138	#endif
139	#if BYTE_ORDER == BIG_ENDIAN
140	char C_m; /* the mode part */
141	char C_c; /* the character part */
142	#endif
143	} c_un;
144	};
145	#define c_c c_un.C_c
146	#define c_m c_un.C_m
147
148	/* for display update */
149	struct ww_update {
150	int best_gain;
151	int best_col;
152	int gain;
153	};
154
155	/* parts of ww_char */
156	#define WWC_CMASK 0x00ff
157	#define WWC_MMASK 0xff00
158	#define WWC_MSHIFT 8
159
160	/* c_m bits */
161	#define WWM_REV 0x01 /* reverse video */
162	#define WWM_BLK 0x02 /* blinking */
163	#define WWM_UL 0x04 /* underlined */
164	#define WWM_GRP 0x08 /* graphics */
165	#define WWM_DIM 0x10 /* half intensity */
166	#define WWM_USR 0x20 /* user specified mode */
167	#define WWM_GLS 0x40 /* window only, glass, i.e., transparent */
168
169	/* ww_state values */
170	#define WWS_INITIAL 0 /* just opened */
171	#define WWS_HASPROC 1 /* has process on pty */
172	#define WWS_DEAD 3 /* child died */
173
174	/* flags for ww_fmap */
175	#define WWF_U 0x01
176	#define WWF_R 0x02
177	#define WWF_D 0x04
178	#define WWF_L 0x08
179	#define WWF_MASK (WWF_U\|WWF_R\|WWF_D\|WWF_L)
180	#define WWF_LABEL 0x40
181	#define WWF_TOP 0x80
182
183	/* flags to wwopen() */
184	#define WWO_PTY 0x01 /* want pty */
185	#define WWO_SOCKET 0x02 /* want socket pair */
186	#define WWO_REVERSE 0x04 /* make it all reverse video */
187	#define WWO_GLASS 0x08 /* make it all glass */
188	#define WWO_FRAME 0x10 /* this is a frame window */
189
190	/* special ww_index value */
191	#define WWX_NOBODY NWW
192
193	/* error codes */
194	#define WWE_NOERR 0
195	#define WWE_SYS 1 /* system error */
196	#define WWE_NOMEM 2 /* out of memory */
197	#define WWE_TOOMANY 3 /* too many windows */
198	#define WWE_NOPTY 4 /* no more ptys */
199	#define WWE_SIZE 5 /* bad window size */
200	#define WWE_BADTERM 6 /* bad terminal type */
201	#define WWE_CANTDO 7 /* dumb terminal */
202
203	/* wwtouched[] bits, there used to be more than one */
204	#define WWU_TOUCHED 0x01 /* touched */
205
206	/* the window structures */
207	struct ww wwhead;
208	struct ww wwindex[NWW + 1]; / last location is for wwnobody */
209	struct ww wwnobody;
210
211	/* tty things */
212	struct ww_tty wwoldtty; /* the old (saved) terminal settings */
213	struct ww_tty wwnewtty; /* the new (current) terminal settings */
214	struct ww_tty wwwintty; /* the terminal settings for windows */
215	char wwterm; / the terminal name */
216	char wwtermcap[1024]; /* place for the termcap */
217
218	/* generally useful variables */
219	int wwnrow, wwncol; /* the screen size */
220	char wwavailmodes; /* actually supported modes */
221	char wwcursormodes; /* the modes for the fake cursor */
222	char wwwrap; /* terminal has auto wrap around */
223	int wwdtablesize; /* result of getdtablesize() call */
224	char *wwsmap; / the screen map */
225	union ww_char *wwos; / the old (current) screen */
226	union ww_char *wwns; / the new (desired) screen */
227	char wwtouched; / wwns changed flags */
228	struct ww_update wwupd; / for display update */
229	int wwospeed; /* output baud rate, copied from wwoldtty */
230	int wwbaud; /* wwospeed converted into actual number */
231	int wwcursorrow, wwcursorcol; /* where we want the cursor to be */
232	int wwerrno; /* error number */
233
234	/* statistics */
235	int wwnflush, wwnwr, wwnwre, wwnwrz, wwnwrc;
236	int wwnwwr, wwnwwra, wwnwwrc;
237	int wwntokdef, wwntokuse, wwntokbad, wwntoksave, wwntokc;
238	int wwnupdate, wwnupdline, wwnupdmiss;
239	int wwnupdscan, wwnupdclreol, wwnupdclreos, wwnupdclreosmiss, wwnupdclreosline;
240	int wwnread, wwnreade, wwnreadz, wwnreadc;
241	int wwnwread, wwnwreade, wwnwreadz, wwnwreadd, wwnwreadc, wwnwreadp;
242	int wwnselect, wwnselecte, wwnselectz;
243
244	/* quicky macros */
245	#define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c))
246	#define wwcurtowin(w) wwsetcursor((w)->ww_cur.r, (w)->ww_cur.c)
247	#define wwunbox(w) wwunframe(w)
248	#define wwclreol(w,r,c) wwclreol1((w), (r), (c), 0)
249	#define wwredrawwin(w) wwredrawwin1((w), (w)->ww_i.t, (w)->ww_i.b, 0)
250	#define wwupdate() wwupdate1(0, wwnrow);
251
252	/* things for handling input */
253	void wwrint(); /* interrupt handler */
254	struct ww wwcurwin; / window to copy input into */
255	char wwib; / input (keyboard) buffer */
256	char wwibe; / wwib + sizeof buffer */
257	char wwibp; / current read position in buffer */
258	char wwibq; / current write position in buffer */
259	#define wwgetc() (wwibp < wwibq ? *wwibp++ & 0x7f : -1)
260	#define wwpeekc() (wwibp < wwibq ? *wwibp & 0x7f : -1)
261	#define wwungetc(c) (wwibp > wwib ? *--wwibp = (c) : -1)
262
263	/* things for short circuiting wwiomux() */
264	char wwintr; /* interrupting */
265	char wwsetjmp; /* want a longjmp() from wwrint() and wwchild() */
266	jmp_buf wwjmpbuf; /* jmpbuf for above */
267	#define wwinterrupt() wwintr
268	#define wwsetintr() do { wwintr = 1; if (wwsetjmp) longjmp(wwjmpbuf, 1); } \
269	while (0)
270	#define wwclrintr() (wwintr = 0)
271
272	/* the window virtual terminal */
273	#define WWT_TERM "window-v2"
274	#define WWT_TERMCAP "WW\|window-v2\|window program version 2:\
275	:am:bs:da:db:ms:pt:cr=^M:nl=^J:bl=^G:ta=^I:\
276	:cm=\\EY%+ %+ :le=^H:nd=\\EC:up=\\EA:do=\\EB:ho=\\EH:\
277	:cd=\\EJ:ce=\\EK:cl=\\EE:me=\\Er^?:"
278	#define WWT_REV "se=\\ErA:so=\\EsA:mr=\\EsA:"
279	#define WWT_BLK "BE=\\ErB:BS=\\EsB:mb=\\EsB:"
280	#define WWT_UL "ue=\\ErD:us=\\EsD:"
281	#define WWT_GRP "ae=\\ErH:as=\\EsH:"
282	#define WWT_DIM "HE=\\ErP:HS=\\EsP:mh=\\EsP:"
283	#define WWT_USR "XE=\\Er`:XS=\\Es`:"
284	#define WWT_ALDL "al=\\EL:dl=\\EM:"
285	#define WWT_IMEI "im=\\E@:ei=\\EO:ic=:mi:" /* XXX, ic for emacs bug */
286	#define WWT_IC "ic=\\EP:"
287	#define WWT_DC "dc=\\EN:"
288	char wwwintermcap[1024]; /* terminal-specific but window-independent
289	part of the window termcap */
290
291	/* our functions */
292	struct ww *wwopen();
293	void wwchild();
294	void wwsuspend();
295	char **wwalloc();
296	char *wwerror();
297
298	/* c library functions */
299	char *malloc();
300	char *calloc();
301	char *getenv();
302	char *tgetstr();
303	char *rindex();
304	char *strcpy();
305	char *strcat();
306
307	#undef MIN
308	#undef MAX
309	#define MIN(x, y) ((x) > (y) ? (y) : (x))
310	#define MAX(x, y) ((x) > (y) ? (x) : (y))