Annotation of src/usr.bin/window/ww.h, Revision 1.6
1.6 ! downsj 1: /* $OpenBSD$ */
! 2: /* $NetBSD: ww.h,v 1.9 1996/10/12 23:46:23 christos Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1983, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * Edward Wang at The University of California, Berkeley.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the University of
22: * California, Berkeley and its contributors.
23: * 4. Neither the name of the University nor the names of its contributors
24: * may be used to endorse or promote products derived from this software
25: * without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37: * SUCH DAMAGE.
38: *
39: * @(#)ww.h 8.1 (Berkeley) 6/6/93
40: */
41:
42: #ifdef OLD_TTY
43: #include <sgtty.h>
44: #else
45: #include <termios.h>
46: #endif
47: #include <setjmp.h>
1.5 niklas 48: #include <sys/types.h>
1.1 deraadt 49:
50: #define NWW 30 /* maximum number of windows */
51:
1.3 niklas 52: /* Macros to clear/set/test flags. */
53: #define SET(t, f) (t) |= (f)
54: #define CLR(t, f) (t) &= ~(f)
55: #define ISSET(t, f) ((t) & (f))
56:
1.1 deraadt 57: /* a rectangle */
58: struct ww_dim {
59: int nr; /* number of rows */
60: int nc; /* number of columns */
61: int t, b; /* top, bottom */
62: int l, r; /* left, right */
63: };
64:
65: /* a coordinate */
66: struct ww_pos {
67: int r; /* row */
68: int c; /* column */
69: };
70:
71: /* the window structure */
72: struct ww {
1.3 niklas 73: int ww_flags;
74:
1.1 deraadt 75: /* general flags and states */
1.3 niklas 76: int ww_state; /* state of window */
77: #define WWS_INITIAL 0 /* just opened */
78: #define WWS_HASPROC 1 /* has process on pty */
79: #define WWS_DEAD 3 /* child died */
80: #define ww_oflags ww_flags
81: #define WWO_REVERSE 0x0001 /* make it all reverse video */
82: #define WWO_GLASS 0x0002 /* make it all glass */
83: #define WWO_FRAME 0x0004 /* this is a frame window */
84: #define WWO_ALLFLAGS 0x0007
1.1 deraadt 85:
86: /* information for overlap */
87: struct ww *ww_forw; /* doubly linked list, for overlapping info */
88: struct ww *ww_back;
1.3 niklas 89: unsigned char ww_index; /* the window index, for wwindex[] */
90: #define WWX_NOBODY NWW
91: int ww_order; /* the overlapping order */
1.1 deraadt 92:
93: /* sizes and positions */
94: struct ww_dim ww_w; /* window size and pos */
95: struct ww_dim ww_b; /* buffer size and pos */
96: struct ww_dim ww_i; /* the part inside the screen */
97: struct ww_pos ww_cur; /* the cursor position, relative to ww_w */
98:
99: /* arrays */
100: char **ww_win; /* the window */
101: union ww_char **ww_buf; /* the buffer */
102: char **ww_fmap; /* map for frame and box windows */
103: short *ww_nvis; /* how many ww_buf chars are visible per row */
104:
105: /* information for wwwrite() and company */
1.3 niklas 106: int ww_wstate; /* state for outputting characters */
1.1 deraadt 107: char ww_modes; /* current display modes */
1.3 niklas 108: #define ww_wflags ww_flags
109: #define WWW_INSERT 0x0008 /* insert mode */
110: #define WWW_MAPNL 0x0010 /* map \n to \r\n */
111: #define WWW_NOUPDATE 0x0020 /* don't do updates in wwwrite() */
112: #define WWW_UNCTRL 0x0040 /* expand control characters */
113: #define WWW_NOINTR 0x0080 /* wwwrite() not interruptable */
114: #define WWW_HASCURSOR 0x0100 /* has fake cursor */
1.1 deraadt 115:
116: /* things for the window process and io */
1.3 niklas 117: int ww_type;
118: #define WWT_PTY 0 /* pty */
119: #define WWT_SOCKET 1 /* socket pair */
120: #define WWT_INTERNAL 2
121: #define ww_pflags ww_flags
122: #define WWP_STOPPED 0x0200 /* output stopped */
1.1 deraadt 123: int ww_pty; /* file descriptor of pty or socket pair */
124: int ww_socket; /* other end of socket pair */
125: int ww_pid; /* pid of process, if WWS_HASPROC true */
126: char ww_ttyname[11]; /* "/dev/ttyp?" */
127: char *ww_ob; /* output buffer */
128: char *ww_obe; /* end of ww_ob */
129: char *ww_obp; /* current read position in ww_ob */
130: char *ww_obq; /* current write position in ww_ob */
131:
132: /* things for the user, they really don't belong here */
1.3 niklas 133: int ww_id; /* the user window id */
134: #define ww_uflags ww_flags
135: #define WWU_CENTER 0x0400 /* center the label */
136: #define WWU_HASFRAME 0x0800 /* frame it */
137: #define WWU_KEEPOPEN 0x1000 /* keep it open after the process dies */
138: #define WWU_ALLFLAGS 0x1c00
1.1 deraadt 139: char *ww_label; /* the user supplied label */
140: struct ww_dim ww_alt; /* alternate position and size */
141: };
142:
143: /* state of a tty */
144: struct ww_tty {
145: #ifdef OLD_TTY
146: struct sgttyb ww_sgttyb;
147: struct tchars ww_tchars;
148: struct ltchars ww_ltchars;
149: int ww_lmode;
150: int ww_ldisc;
151: #else
152: struct termios ww_termios;
153: #endif
154: };
155:
156: union ww_char {
157: short c_w; /* as a word */
158: struct {
159: #if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
160: char C_c; /* the character part */
161: char C_m; /* the mode part */
162: #endif
163: #if BYTE_ORDER == BIG_ENDIAN
164: char C_m; /* the mode part */
165: char C_c; /* the character part */
166: #endif
167: } c_un;
168: };
169: #define c_c c_un.C_c
170: #define c_m c_un.C_m
171:
172: /* for display update */
173: struct ww_update {
174: int best_gain;
175: int best_col;
176: int gain;
177: };
178:
179: /* parts of ww_char */
180: #define WWC_CMASK 0x00ff
181: #define WWC_MMASK 0xff00
182: #define WWC_MSHIFT 8
183:
184: /* c_m bits */
185: #define WWM_REV 0x01 /* reverse video */
186: #define WWM_BLK 0x02 /* blinking */
187: #define WWM_UL 0x04 /* underlined */
188: #define WWM_GRP 0x08 /* graphics */
189: #define WWM_DIM 0x10 /* half intensity */
190: #define WWM_USR 0x20 /* user specified mode */
191: #define WWM_GLS 0x40 /* window only, glass, i.e., transparent */
192:
193: /* flags for ww_fmap */
194: #define WWF_U 0x01
195: #define WWF_R 0x02
196: #define WWF_D 0x04
197: #define WWF_L 0x08
198: #define WWF_MASK (WWF_U|WWF_R|WWF_D|WWF_L)
199: #define WWF_LABEL 0x40
200: #define WWF_TOP 0x80
1.2 deraadt 201:
1.1 deraadt 202: /* error codes */
203: #define WWE_NOERR 0
204: #define WWE_SYS 1 /* system error */
205: #define WWE_NOMEM 2 /* out of memory */
206: #define WWE_TOOMANY 3 /* too many windows */
207: #define WWE_NOPTY 4 /* no more ptys */
208: #define WWE_SIZE 5 /* bad window size */
209: #define WWE_BADTERM 6 /* bad terminal type */
210: #define WWE_CANTDO 7 /* dumb terminal */
211:
212: /* wwtouched[] bits, there used to be more than one */
213: #define WWU_TOUCHED 0x01 /* touched */
214:
215: /* the window structures */
216: struct ww wwhead;
217: struct ww *wwindex[NWW + 1]; /* last location is for wwnobody */
218: struct ww wwnobody;
219:
220: /* tty things */
221: struct ww_tty wwoldtty; /* the old (saved) terminal settings */
222: struct ww_tty wwnewtty; /* the new (current) terminal settings */
223: struct ww_tty wwwintty; /* the terminal settings for windows */
224: char *wwterm; /* the terminal name */
225: char wwtermcap[1024]; /* place for the termcap */
226:
227: /* generally useful variables */
228: int wwnrow, wwncol; /* the screen size */
229: char wwavailmodes; /* actually supported modes */
230: char wwcursormodes; /* the modes for the fake cursor */
231: char wwwrap; /* terminal has auto wrap around */
232: int wwdtablesize; /* result of getdtablesize() call */
1.3 niklas 233: unsigned char **wwsmap; /* the screen map */
1.1 deraadt 234: union ww_char **wwos; /* the old (current) screen */
235: union ww_char **wwns; /* the new (desired) screen */
236: union ww_char **wwcs; /* the checkpointed screen */
237: char *wwtouched; /* wwns changed flags */
238: struct ww_update *wwupd; /* for display update */
239: int wwospeed; /* output baud rate, copied from wwoldtty */
240: int wwbaud; /* wwospeed converted into actual number */
241: int wwcursorrow, wwcursorcol; /* where we want the cursor to be */
242: int wwerrno; /* error number */
243:
244: /* statistics */
245: int wwnflush, wwnwr, wwnwre, wwnwrz, wwnwrc;
246: int wwnwwr, wwnwwra, wwnwwrc;
247: int wwntokdef, wwntokuse, wwntokbad, wwntoksave, wwntokc;
248: int wwnupdate, wwnupdline, wwnupdmiss;
249: int wwnupdscan, wwnupdclreol, wwnupdclreos, wwnupdclreosmiss, wwnupdclreosline;
250: int wwnread, wwnreade, wwnreadz;
251: int wwnreadc, wwnreadack, wwnreadnack, wwnreadstat, wwnreadec;
252: int wwnwread, wwnwreade, wwnwreadz, wwnwreadd, wwnwreadc, wwnwreadp;
253: int wwnselect, wwnselecte, wwnselectz;
254:
255: /* quicky macros */
256: #define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c))
257: #define wwcurtowin(w) wwsetcursor((w)->ww_cur.r, (w)->ww_cur.c)
258: #define wwunbox(w) wwunframe(w)
259: #define wwclreol(w,r,c) wwclreol1((w), (r), (c), 0)
260: #define wwredrawwin(w) wwredrawwin1((w), (w)->ww_i.t, (w)->ww_i.b, 0)
261: #define wwupdate() wwupdate1(0, wwnrow);
262:
263: /* things for handling input */
264: void wwrint(); /* interrupt handler */
265: struct ww *wwcurwin; /* window to copy input into */
266: char *wwib; /* input (keyboard) buffer */
267: char *wwibe; /* wwib + sizeof buffer */
268: char *wwibp; /* current read position in buffer */
269: char *wwibq; /* current write position in buffer */
270: #define wwmaskc(c) ((c) & 0x7f)
271: #define wwgetc() (wwibp < wwibq ? wwmaskc(*wwibp++) : -1)
272: #define wwpeekc() (wwibp < wwibq ? wwmaskc(*wwibp) : -1)
273: #define wwungetc(c) (wwibp > wwib ? *--wwibp = (c) : -1)
274:
275: /* things for short circuiting wwiomux() */
276: char wwintr; /* interrupting */
277: char wwsetjmp; /* want a longjmp() from wwrint() and wwchild() */
278: jmp_buf wwjmpbuf; /* jmpbuf for above */
279: #define wwinterrupt() wwintr
280: #define wwsetintr() do { wwintr = 1; if (wwsetjmp) longjmp(wwjmpbuf, 1); } \
281: while (0)
282: #define wwclrintr() (wwintr = 0)
283:
284: /* checkpointing */
285: int wwdocheckpoint;
286:
287: /* the window virtual terminal */
288: #define WWT_TERM "window-v2"
289: #define WWT_TERMCAP "WW|window-v2|window program version 2:\
290: :am:bs:da:db:ms:pt:cr=^M:nl=^J:bl=^G:ta=^I:\
291: :cm=\\EY%+ %+ :le=^H:nd=\\EC:up=\\EA:do=\\EB:ho=\\EH:\
292: :cd=\\EJ:ce=\\EK:cl=\\EE:me=\\Er^?:"
293: #define WWT_REV "se=\\ErA:so=\\EsA:mr=\\EsA:"
294: #define WWT_BLK "BE=\\ErB:BS=\\EsB:mb=\\EsB:"
295: #define WWT_UL "ue=\\ErD:us=\\EsD:"
296: #define WWT_GRP "ae=\\ErH:as=\\EsH:"
297: #define WWT_DIM "HE=\\ErP:HS=\\EsP:mh=\\EsP:"
298: #define WWT_USR "XE=\\Er`:XS=\\Es`:"
299: #define WWT_ALDL "al=\\EL:dl=\\EM:"
300: #define WWT_IMEI "im=\\E@:ei=\\EO:ic=:mi:" /* XXX, ic for emacs bug */
301: #define WWT_IC "ic=\\EP:"
302: #define WWT_DC "dc=\\EN:"
303: char wwwintermcap[1024]; /* terminal-specific but window-independent
304: part of the window termcap */
305: #ifdef TERMINFO
306: /* where to put the temporary terminfo directory */
307: char wwterminfopath[1024];
308: #endif
309:
310: /* our functions */
311: struct ww *wwopen();
312: void wwchild();
313: void wwalarm();
314: void wwquit();
315: char **wwalloc();
316: char *wwerror();
317:
318: #undef MIN
319: #undef MAX
320: #define MIN(x, y) ((x) > (y) ? (y) : (x))
321: #define MAX(x, y) ((x) > (y) ? (x) : (y))
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