Annotation of src/usr.bin/window/ww.h, Revision 1.9
1.9 ! millert 1: /* $OpenBSD: ww.h,v 1.8 2002/06/12 06:07:17 mpech Exp $ */
1.6 downsj 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.
1.9 ! millert 19: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: *
35: * @(#)ww.h 8.1 (Berkeley) 6/6/93
36: */
37:
38: #ifdef OLD_TTY
39: #include <sgtty.h>
40: #else
41: #include <termios.h>
42: #endif
43: #include <setjmp.h>
1.5 niklas 44: #include <sys/types.h>
1.1 deraadt 45:
46: #define NWW 30 /* maximum number of windows */
47:
1.3 niklas 48: /* Macros to clear/set/test flags. */
49: #define SET(t, f) (t) |= (f)
50: #define CLR(t, f) (t) &= ~(f)
51: #define ISSET(t, f) ((t) & (f))
52:
1.1 deraadt 53: /* a rectangle */
54: struct ww_dim {
55: int nr; /* number of rows */
56: int nc; /* number of columns */
57: int t, b; /* top, bottom */
58: int l, r; /* left, right */
59: };
60:
61: /* a coordinate */
62: struct ww_pos {
63: int r; /* row */
64: int c; /* column */
65: };
66:
67: /* the window structure */
68: struct ww {
1.3 niklas 69: int ww_flags;
70:
1.1 deraadt 71: /* general flags and states */
1.3 niklas 72: int ww_state; /* state of window */
73: #define WWS_INITIAL 0 /* just opened */
74: #define WWS_HASPROC 1 /* has process on pty */
75: #define WWS_DEAD 3 /* child died */
76: #define ww_oflags ww_flags
77: #define WWO_REVERSE 0x0001 /* make it all reverse video */
78: #define WWO_GLASS 0x0002 /* make it all glass */
79: #define WWO_FRAME 0x0004 /* this is a frame window */
80: #define WWO_ALLFLAGS 0x0007
1.1 deraadt 81:
82: /* information for overlap */
83: struct ww *ww_forw; /* doubly linked list, for overlapping info */
84: struct ww *ww_back;
1.3 niklas 85: unsigned char ww_index; /* the window index, for wwindex[] */
86: #define WWX_NOBODY NWW
87: int ww_order; /* the overlapping order */
1.1 deraadt 88:
89: /* sizes and positions */
90: struct ww_dim ww_w; /* window size and pos */
91: struct ww_dim ww_b; /* buffer size and pos */
92: struct ww_dim ww_i; /* the part inside the screen */
93: struct ww_pos ww_cur; /* the cursor position, relative to ww_w */
94:
95: /* arrays */
96: char **ww_win; /* the window */
97: union ww_char **ww_buf; /* the buffer */
98: char **ww_fmap; /* map for frame and box windows */
99: short *ww_nvis; /* how many ww_buf chars are visible per row */
100:
101: /* information for wwwrite() and company */
1.3 niklas 102: int ww_wstate; /* state for outputting characters */
1.1 deraadt 103: char ww_modes; /* current display modes */
1.3 niklas 104: #define ww_wflags ww_flags
105: #define WWW_INSERT 0x0008 /* insert mode */
106: #define WWW_MAPNL 0x0010 /* map \n to \r\n */
107: #define WWW_NOUPDATE 0x0020 /* don't do updates in wwwrite() */
108: #define WWW_UNCTRL 0x0040 /* expand control characters */
109: #define WWW_NOINTR 0x0080 /* wwwrite() not interruptable */
110: #define WWW_HASCURSOR 0x0100 /* has fake cursor */
1.1 deraadt 111:
112: /* things for the window process and io */
1.3 niklas 113: int ww_type;
114: #define WWT_PTY 0 /* pty */
115: #define WWT_SOCKET 1 /* socket pair */
116: #define WWT_INTERNAL 2
117: #define ww_pflags ww_flags
118: #define WWP_STOPPED 0x0200 /* output stopped */
1.1 deraadt 119: int ww_pty; /* file descriptor of pty or socket pair */
120: int ww_socket; /* other end of socket pair */
1.8 mpech 121: pid_t ww_pid; /* pid of process, if WWS_HASPROC true */
1.1 deraadt 122: char ww_ttyname[11]; /* "/dev/ttyp?" */
123: char *ww_ob; /* output buffer */
124: char *ww_obe; /* end of ww_ob */
125: char *ww_obp; /* current read position in ww_ob */
126: char *ww_obq; /* current write position in ww_ob */
127:
128: /* things for the user, they really don't belong here */
1.3 niklas 129: int ww_id; /* the user window id */
130: #define ww_uflags ww_flags
131: #define WWU_CENTER 0x0400 /* center the label */
132: #define WWU_HASFRAME 0x0800 /* frame it */
133: #define WWU_KEEPOPEN 0x1000 /* keep it open after the process dies */
134: #define WWU_ALLFLAGS 0x1c00
1.1 deraadt 135: char *ww_label; /* the user supplied label */
136: struct ww_dim ww_alt; /* alternate position and size */
137: };
138:
139: /* state of a tty */
140: struct ww_tty {
141: #ifdef OLD_TTY
142: struct sgttyb ww_sgttyb;
143: struct tchars ww_tchars;
144: struct ltchars ww_ltchars;
145: int ww_lmode;
146: int ww_ldisc;
147: #else
148: struct termios ww_termios;
149: #endif
150: };
151:
152: union ww_char {
153: short c_w; /* as a word */
154: struct {
155: #if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
156: char C_c; /* the character part */
157: char C_m; /* the mode part */
158: #endif
159: #if BYTE_ORDER == BIG_ENDIAN
160: char C_m; /* the mode part */
161: char C_c; /* the character part */
162: #endif
163: } c_un;
164: };
165: #define c_c c_un.C_c
166: #define c_m c_un.C_m
167:
168: /* for display update */
169: struct ww_update {
170: int best_gain;
171: int best_col;
172: int gain;
173: };
174:
175: /* parts of ww_char */
176: #define WWC_CMASK 0x00ff
177: #define WWC_MMASK 0xff00
178: #define WWC_MSHIFT 8
179:
180: /* c_m bits */
181: #define WWM_REV 0x01 /* reverse video */
182: #define WWM_BLK 0x02 /* blinking */
183: #define WWM_UL 0x04 /* underlined */
184: #define WWM_GRP 0x08 /* graphics */
185: #define WWM_DIM 0x10 /* half intensity */
186: #define WWM_USR 0x20 /* user specified mode */
187: #define WWM_GLS 0x40 /* window only, glass, i.e., transparent */
188:
189: /* flags for ww_fmap */
190: #define WWF_U 0x01
191: #define WWF_R 0x02
192: #define WWF_D 0x04
193: #define WWF_L 0x08
194: #define WWF_MASK (WWF_U|WWF_R|WWF_D|WWF_L)
195: #define WWF_LABEL 0x40
196: #define WWF_TOP 0x80
1.2 deraadt 197:
1.1 deraadt 198: /* error codes */
199: #define WWE_NOERR 0
200: #define WWE_SYS 1 /* system error */
201: #define WWE_NOMEM 2 /* out of memory */
202: #define WWE_TOOMANY 3 /* too many windows */
203: #define WWE_NOPTY 4 /* no more ptys */
204: #define WWE_SIZE 5 /* bad window size */
205: #define WWE_BADTERM 6 /* bad terminal type */
206: #define WWE_CANTDO 7 /* dumb terminal */
207:
208: /* wwtouched[] bits, there used to be more than one */
209: #define WWU_TOUCHED 0x01 /* touched */
210:
211: /* the window structures */
212: struct ww wwhead;
213: struct ww *wwindex[NWW + 1]; /* last location is for wwnobody */
214: struct ww wwnobody;
215:
216: /* tty things */
217: struct ww_tty wwoldtty; /* the old (saved) terminal settings */
218: struct ww_tty wwnewtty; /* the new (current) terminal settings */
219: struct ww_tty wwwintty; /* the terminal settings for windows */
220: char *wwterm; /* the terminal name */
221: char wwtermcap[1024]; /* place for the termcap */
222:
223: /* generally useful variables */
224: int wwnrow, wwncol; /* the screen size */
225: char wwavailmodes; /* actually supported modes */
226: char wwcursormodes; /* the modes for the fake cursor */
227: char wwwrap; /* terminal has auto wrap around */
228: int wwdtablesize; /* result of getdtablesize() call */
1.3 niklas 229: unsigned char **wwsmap; /* the screen map */
1.1 deraadt 230: union ww_char **wwos; /* the old (current) screen */
231: union ww_char **wwns; /* the new (desired) screen */
232: union ww_char **wwcs; /* the checkpointed screen */
233: char *wwtouched; /* wwns changed flags */
234: struct ww_update *wwupd; /* for display update */
235: int wwospeed; /* output baud rate, copied from wwoldtty */
236: int wwbaud; /* wwospeed converted into actual number */
237: int wwcursorrow, wwcursorcol; /* where we want the cursor to be */
238: int wwerrno; /* error number */
239:
240: /* statistics */
241: int wwnflush, wwnwr, wwnwre, wwnwrz, wwnwrc;
242: int wwnwwr, wwnwwra, wwnwwrc;
243: int wwntokdef, wwntokuse, wwntokbad, wwntoksave, wwntokc;
244: int wwnupdate, wwnupdline, wwnupdmiss;
245: int wwnupdscan, wwnupdclreol, wwnupdclreos, wwnupdclreosmiss, wwnupdclreosline;
246: int wwnread, wwnreade, wwnreadz;
247: int wwnreadc, wwnreadack, wwnreadnack, wwnreadstat, wwnreadec;
248: int wwnwread, wwnwreade, wwnwreadz, wwnwreadd, wwnwreadc, wwnwreadp;
249: int wwnselect, wwnselecte, wwnselectz;
250:
251: /* quicky macros */
252: #define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c))
253: #define wwcurtowin(w) wwsetcursor((w)->ww_cur.r, (w)->ww_cur.c)
254: #define wwunbox(w) wwunframe(w)
255: #define wwclreol(w,r,c) wwclreol1((w), (r), (c), 0)
256: #define wwredrawwin(w) wwredrawwin1((w), (w)->ww_i.t, (w)->ww_i.b, 0)
257: #define wwupdate() wwupdate1(0, wwnrow);
258:
259: /* things for handling input */
260: void wwrint(); /* interrupt handler */
261: struct ww *wwcurwin; /* window to copy input into */
262: char *wwib; /* input (keyboard) buffer */
263: char *wwibe; /* wwib + sizeof buffer */
264: char *wwibp; /* current read position in buffer */
265: char *wwibq; /* current write position in buffer */
266: #define wwmaskc(c) ((c) & 0x7f)
267: #define wwgetc() (wwibp < wwibq ? wwmaskc(*wwibp++) : -1)
268: #define wwpeekc() (wwibp < wwibq ? wwmaskc(*wwibp) : -1)
269: #define wwungetc(c) (wwibp > wwib ? *--wwibp = (c) : -1)
270:
271: /* things for short circuiting wwiomux() */
272: char wwintr; /* interrupting */
273: char wwsetjmp; /* want a longjmp() from wwrint() and wwchild() */
274: jmp_buf wwjmpbuf; /* jmpbuf for above */
275: #define wwinterrupt() wwintr
276: #define wwsetintr() do { wwintr = 1; if (wwsetjmp) longjmp(wwjmpbuf, 1); } \
277: while (0)
278: #define wwclrintr() (wwintr = 0)
279:
280: /* checkpointing */
281: int wwdocheckpoint;
282:
283: /* the window virtual terminal */
284: #define WWT_TERM "window-v2"
1.7 millert 285: #define WWT_TERMCAP "window-v2|window program version 2:\
1.1 deraadt 286: :am:bs:da:db:ms:pt:cr=^M:nl=^J:bl=^G:ta=^I:\
287: :cm=\\EY%+ %+ :le=^H:nd=\\EC:up=\\EA:do=\\EB:ho=\\EH:\
288: :cd=\\EJ:ce=\\EK:cl=\\EE:me=\\Er^?:"
289: #define WWT_REV "se=\\ErA:so=\\EsA:mr=\\EsA:"
290: #define WWT_BLK "BE=\\ErB:BS=\\EsB:mb=\\EsB:"
291: #define WWT_UL "ue=\\ErD:us=\\EsD:"
292: #define WWT_GRP "ae=\\ErH:as=\\EsH:"
293: #define WWT_DIM "HE=\\ErP:HS=\\EsP:mh=\\EsP:"
294: #define WWT_USR "XE=\\Er`:XS=\\Es`:"
295: #define WWT_ALDL "al=\\EL:dl=\\EM:"
296: #define WWT_IMEI "im=\\E@:ei=\\EO:ic=:mi:" /* XXX, ic for emacs bug */
297: #define WWT_IC "ic=\\EP:"
298: #define WWT_DC "dc=\\EN:"
299: char wwwintermcap[1024]; /* terminal-specific but window-independent
300: part of the window termcap */
301: #ifdef TERMINFO
302: /* where to put the temporary terminfo directory */
303: char wwterminfopath[1024];
304: #endif
305:
306: /* our functions */
307: struct ww *wwopen();
308: void wwchild();
309: void wwalarm();
310: void wwquit();
311: char **wwalloc();
312: char *wwerror();
313:
314: #undef MIN
315: #undef MAX
316: #define MIN(x, y) ((x) > (y) ? (y) : (x))
317: #define MAX(x, y) ((x) > (y) ? (x) : (y))
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