Annotation of src/usr.bin/window/ww.h, Revision 1.2
1.2 ! deraadt 1: /* $NetBSD: ww.h,v 1.5 1995/12/21 11:05:58 mycroft Exp $ */
1.1 deraadt 2:
3: /*
4: * Copyright (c) 1983, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Edward Wang at The University of California, Berkeley.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: *
38: * @(#)ww.h 8.1 (Berkeley) 6/6/93
39: */
40:
41: #ifdef OLD_TTY
42: #include <sgtty.h>
43: #else
44: #include <termios.h>
45: #endif
46: #include <setjmp.h>
47: #include <machine/endian.h>
48:
49: #define NWW 30 /* maximum number of windows */
50:
51: /* a rectangle */
52: struct ww_dim {
53: int nr; /* number of rows */
54: int nc; /* number of columns */
55: int t, b; /* top, bottom */
56: int l, r; /* left, right */
57: };
58:
59: /* a coordinate */
60: struct ww_pos {
61: int r; /* row */
62: int c; /* column */
63: };
64:
65: /* the window structure */
66: struct ww {
67: /* general flags and states */
68: char ww_state; /* state of window */
69: char ww_oflags; /* wwopen flags */
70:
71: /* information for overlap */
72: struct ww *ww_forw; /* doubly linked list, for overlapping info */
73: struct ww *ww_back;
74: char ww_index; /* the window index, for wwindex[] */
75: char ww_order; /* the overlapping order */
76:
77: /* sizes and positions */
78: struct ww_dim ww_w; /* window size and pos */
79: struct ww_dim ww_b; /* buffer size and pos */
80: struct ww_dim ww_i; /* the part inside the screen */
81: struct ww_pos ww_cur; /* the cursor position, relative to ww_w */
82:
83: /* arrays */
84: char **ww_win; /* the window */
85: union ww_char **ww_buf; /* the buffer */
86: char **ww_fmap; /* map for frame and box windows */
87: short *ww_nvis; /* how many ww_buf chars are visible per row */
88:
89: /* information for wwwrite() and company */
90: char ww_wstate; /* state for outputting characters */
91: char ww_modes; /* current display modes */
92: char ww_insert; /* insert mode */
93: char ww_mapnl; /* map \n to \r\n */
94: char ww_noupdate; /* don't do updates in wwwrite() */
95: char ww_unctrl; /* expand control characters */
96: char ww_nointr; /* wwwrite() not interruptable */
97: char ww_hascursor; /* has fake cursor */
98:
99: /* things for the window process and io */
1.2 ! deraadt 100: char ww_type; /* ww_pty is really a pty, not socket pair */
1.1 deraadt 101: char ww_stopped; /* output stopped */
102: int ww_pty; /* file descriptor of pty or socket pair */
103: int ww_socket; /* other end of socket pair */
104: int ww_pid; /* pid of process, if WWS_HASPROC true */
105: char ww_ttyname[11]; /* "/dev/ttyp?" */
106: char *ww_ob; /* output buffer */
107: char *ww_obe; /* end of ww_ob */
108: char *ww_obp; /* current read position in ww_ob */
109: char *ww_obq; /* current write position in ww_ob */
110:
111: /* things for the user, they really don't belong here */
112: char ww_id; /* the user window id */
113: char ww_center; /* center the label */
114: char ww_hasframe; /* frame it */
115: char ww_keepopen; /* keep it open after the process dies */
116: char *ww_label; /* the user supplied label */
117: struct ww_dim ww_alt; /* alternate position and size */
118: };
119:
120: /* state of a tty */
121: struct ww_tty {
122: #ifdef OLD_TTY
123: struct sgttyb ww_sgttyb;
124: struct tchars ww_tchars;
125: struct ltchars ww_ltchars;
126: int ww_lmode;
127: int ww_ldisc;
128: #else
129: struct termios ww_termios;
130: #endif
131: };
132:
133: union ww_char {
134: short c_w; /* as a word */
135: struct {
136: #if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
137: char C_c; /* the character part */
138: char C_m; /* the mode part */
139: #endif
140: #if BYTE_ORDER == BIG_ENDIAN
141: char C_m; /* the mode part */
142: char C_c; /* the character part */
143: #endif
144: } c_un;
145: };
146: #define c_c c_un.C_c
147: #define c_m c_un.C_m
148:
149: /* for display update */
150: struct ww_update {
151: int best_gain;
152: int best_col;
153: int gain;
154: };
155:
156: /* parts of ww_char */
157: #define WWC_CMASK 0x00ff
158: #define WWC_MMASK 0xff00
159: #define WWC_MSHIFT 8
160:
161: /* c_m bits */
162: #define WWM_REV 0x01 /* reverse video */
163: #define WWM_BLK 0x02 /* blinking */
164: #define WWM_UL 0x04 /* underlined */
165: #define WWM_GRP 0x08 /* graphics */
166: #define WWM_DIM 0x10 /* half intensity */
167: #define WWM_USR 0x20 /* user specified mode */
168: #define WWM_GLS 0x40 /* window only, glass, i.e., transparent */
169:
170: /* ww_state values */
171: #define WWS_INITIAL 0 /* just opened */
172: #define WWS_HASPROC 1 /* has process on pty */
173: #define WWS_DEAD 3 /* child died */
174:
175: /* flags for ww_fmap */
176: #define WWF_U 0x01
177: #define WWF_R 0x02
178: #define WWF_D 0x04
179: #define WWF_L 0x08
180: #define WWF_MASK (WWF_U|WWF_R|WWF_D|WWF_L)
181: #define WWF_LABEL 0x40
182: #define WWF_TOP 0x80
1.2 ! deraadt 183:
! 184: /* ww_type values */
! 185: #define WWT_PTY 0 /* pty */
! 186: #define WWT_SOCKET 1 /* socket pair */
! 187: #define WWT_INTERNAL 2
1.1 deraadt 188:
189: /* flags to wwopen() */
190: #define WWO_PTY 0x01 /* want pty */
191: #define WWO_SOCKET 0x02 /* want socket pair */
192: #define WWO_REVERSE 0x04 /* make it all reverse video */
193: #define WWO_GLASS 0x08 /* make it all glass */
194: #define WWO_FRAME 0x10 /* this is a frame window */
195:
196: /* special ww_index value */
197: #define WWX_NOBODY NWW
198:
199: /* error codes */
200: #define WWE_NOERR 0
201: #define WWE_SYS 1 /* system error */
202: #define WWE_NOMEM 2 /* out of memory */
203: #define WWE_TOOMANY 3 /* too many windows */
204: #define WWE_NOPTY 4 /* no more ptys */
205: #define WWE_SIZE 5 /* bad window size */
206: #define WWE_BADTERM 6 /* bad terminal type */
207: #define WWE_CANTDO 7 /* dumb terminal */
208:
209: /* wwtouched[] bits, there used to be more than one */
210: #define WWU_TOUCHED 0x01 /* touched */
211:
212: /* the window structures */
213: struct ww wwhead;
214: struct ww *wwindex[NWW + 1]; /* last location is for wwnobody */
215: struct ww wwnobody;
216:
217: /* tty things */
218: struct ww_tty wwoldtty; /* the old (saved) terminal settings */
219: struct ww_tty wwnewtty; /* the new (current) terminal settings */
220: struct ww_tty wwwintty; /* the terminal settings for windows */
221: char *wwterm; /* the terminal name */
222: char wwtermcap[1024]; /* place for the termcap */
223:
224: /* generally useful variables */
225: int wwnrow, wwncol; /* the screen size */
226: char wwavailmodes; /* actually supported modes */
227: char wwcursormodes; /* the modes for the fake cursor */
228: char wwwrap; /* terminal has auto wrap around */
229: int wwdtablesize; /* result of getdtablesize() call */
230: char **wwsmap; /* the screen map */
231: union ww_char **wwos; /* the old (current) screen */
232: union ww_char **wwns; /* the new (desired) screen */
233: union ww_char **wwcs; /* the checkpointed screen */
234: char *wwtouched; /* wwns changed flags */
235: struct ww_update *wwupd; /* for display update */
236: int wwospeed; /* output baud rate, copied from wwoldtty */
237: int wwbaud; /* wwospeed converted into actual number */
238: int wwcursorrow, wwcursorcol; /* where we want the cursor to be */
239: int wwerrno; /* error number */
240:
241: /* statistics */
242: int wwnflush, wwnwr, wwnwre, wwnwrz, wwnwrc;
243: int wwnwwr, wwnwwra, wwnwwrc;
244: int wwntokdef, wwntokuse, wwntokbad, wwntoksave, wwntokc;
245: int wwnupdate, wwnupdline, wwnupdmiss;
246: int wwnupdscan, wwnupdclreol, wwnupdclreos, wwnupdclreosmiss, wwnupdclreosline;
247: int wwnread, wwnreade, wwnreadz;
248: int wwnreadc, wwnreadack, wwnreadnack, wwnreadstat, wwnreadec;
249: int wwnwread, wwnwreade, wwnwreadz, wwnwreadd, wwnwreadc, wwnwreadp;
250: int wwnselect, wwnselecte, wwnselectz;
251:
252: /* quicky macros */
253: #define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c))
254: #define wwcurtowin(w) wwsetcursor((w)->ww_cur.r, (w)->ww_cur.c)
255: #define wwunbox(w) wwunframe(w)
256: #define wwclreol(w,r,c) wwclreol1((w), (r), (c), 0)
257: #define wwredrawwin(w) wwredrawwin1((w), (w)->ww_i.t, (w)->ww_i.b, 0)
258: #define wwupdate() wwupdate1(0, wwnrow);
259:
260: /* things for handling input */
261: void wwrint(); /* interrupt handler */
262: struct ww *wwcurwin; /* window to copy input into */
263: char *wwib; /* input (keyboard) buffer */
264: char *wwibe; /* wwib + sizeof buffer */
265: char *wwibp; /* current read position in buffer */
266: char *wwibq; /* current write position in buffer */
267: #define wwmaskc(c) ((c) & 0x7f)
268: #define wwgetc() (wwibp < wwibq ? wwmaskc(*wwibp++) : -1)
269: #define wwpeekc() (wwibp < wwibq ? wwmaskc(*wwibp) : -1)
270: #define wwungetc(c) (wwibp > wwib ? *--wwibp = (c) : -1)
271:
272: /* things for short circuiting wwiomux() */
273: char wwintr; /* interrupting */
274: char wwsetjmp; /* want a longjmp() from wwrint() and wwchild() */
275: jmp_buf wwjmpbuf; /* jmpbuf for above */
276: #define wwinterrupt() wwintr
277: #define wwsetintr() do { wwintr = 1; if (wwsetjmp) longjmp(wwjmpbuf, 1); } \
278: while (0)
279: #define wwclrintr() (wwintr = 0)
280:
281: /* checkpointing */
282: int wwdocheckpoint;
283:
284: /* the window virtual terminal */
285: #define WWT_TERM "window-v2"
286: #define WWT_TERMCAP "WW|window-v2|window program version 2:\
287: :am:bs:da:db:ms:pt:cr=^M:nl=^J:bl=^G:ta=^I:\
288: :cm=\\EY%+ %+ :le=^H:nd=\\EC:up=\\EA:do=\\EB:ho=\\EH:\
289: :cd=\\EJ:ce=\\EK:cl=\\EE:me=\\Er^?:"
290: #define WWT_REV "se=\\ErA:so=\\EsA:mr=\\EsA:"
291: #define WWT_BLK "BE=\\ErB:BS=\\EsB:mb=\\EsB:"
292: #define WWT_UL "ue=\\ErD:us=\\EsD:"
293: #define WWT_GRP "ae=\\ErH:as=\\EsH:"
294: #define WWT_DIM "HE=\\ErP:HS=\\EsP:mh=\\EsP:"
295: #define WWT_USR "XE=\\Er`:XS=\\Es`:"
296: #define WWT_ALDL "al=\\EL:dl=\\EM:"
297: #define WWT_IMEI "im=\\E@:ei=\\EO:ic=:mi:" /* XXX, ic for emacs bug */
298: #define WWT_IC "ic=\\EP:"
299: #define WWT_DC "dc=\\EN:"
300: char wwwintermcap[1024]; /* terminal-specific but window-independent
301: part of the window termcap */
302: #ifdef TERMINFO
303: /* where to put the temporary terminfo directory */
304: char wwterminfopath[1024];
305: #endif
306:
307: /* our functions */
308: struct ww *wwopen();
309: void wwchild();
310: void wwalarm();
311: void wwquit();
312: char **wwalloc();
313: char *wwerror();
314:
315: /* c library functions */
316: char *malloc();
317: char *calloc();
318: char *getenv();
319: char *tgetstr();
320: char *rindex();
321: char *strcpy();
322: char *strcat();
323:
324: #undef MIN
325: #undef MAX
326: #define MIN(x, y) ((x) > (y) ? (y) : (x))
327: #define MAX(x, y) ((x) > (y) ? (x) : (y))
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