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1.1 root 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 are permitted provided
9: * that: (1) source distributions retain this entire copyright notice and
10: * comment, and (2) distributions including binaries display the following
11: * acknowledgement: ``This product includes software developed by the
12: * University of California, Berkeley and its contributors'' in the
13: * documentation or other materials provided with the distribution and in
14: * all advertising materials mentioning features or use of this software.
15: * Neither the name of the University nor the names of its contributors may
16: * be used to endorse or promote products derived from this software without
17: * specific prior written permission.
18: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
19: * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
20: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
21: *
22: * @(#)ww.h 3.60 (Berkeley) 6/6/90
23: */
24:
25: #ifndef POSIX_TTY
26: #include <sgtty.h>
27: #else
28: #include <termios.h>
29: #endif
30: #include <setjmp.h>
31: #include <machine/endian.h>
32:
33: #define NWW 30 /* maximum number of windows */
34:
35: /* a rectangle */
36: struct ww_dim {
37: int nr; /* number of rows */
38: int nc; /* number of columns */
39: int t, b; /* top, bottom */
40: int l, r; /* left, right */
41: };
42:
43: /* a coordinate */
44: struct ww_pos {
45: int r; /* row */
46: int c; /* column */
47: };
48:
49: /* the window structure */
50: struct ww {
51: /* general flags and states */
52: char ww_state; /* state of window */
53: char ww_oflags; /* wwopen flags */
54:
55: /* information for overlap */
56: struct ww *ww_forw; /* doubly linked list, for overlapping info */
57: struct ww *ww_back;
58: char ww_index; /* the window index, for wwindex[] */
59: char ww_order; /* the overlapping order */
60:
61: /* sizes and positions */
62: struct ww_dim ww_w; /* window size and pos */
63: struct ww_dim ww_b; /* buffer size and pos */
64: struct ww_dim ww_i; /* the part inside the screen */
65: struct ww_pos ww_cur; /* the cursor position, relative to ww_w */
66:
67: /* arrays */
68: char **ww_win; /* the window */
69: union ww_char **ww_buf; /* the buffer */
70: char **ww_fmap; /* map for frame and box windows */
71: short *ww_nvis; /* how many ww_buf chars are visible per row */
72:
73: /* information for wwwrite() and company */
74: char ww_wstate; /* state for outputting characters */
75: char ww_modes; /* current display modes */
76: char ww_insert; /* insert mode */
77: char ww_mapnl; /* map \n to \r\n */
78: char ww_noupdate; /* don't do updates in wwwrite() */
79: char ww_unctrl; /* expand control characters */
80: char ww_nointr; /* wwwrite() not interruptable */
81: char ww_hascursor; /* has fake cursor */
82:
83: /* things for the window process and io */
84: char ww_ispty; /* ww_pty is really a pty, not socket pair */
85: char ww_stopped; /* output stopped */
86: int ww_pty; /* file descriptor of pty or socket pair */
87: int ww_socket; /* other end of socket pair */
88: int ww_pid; /* pid of process, if WWS_HASPROC true */
89: char ww_ttyname[11]; /* "/dev/ttyp?" */
90: char *ww_ob; /* output buffer */
91: char *ww_obe; /* end of ww_ob */
92: char *ww_obp; /* current read position in ww_ob */
93: char *ww_obq; /* current write position in ww_ob */
94:
95: /* things for the user, they really don't belong here */
96: char ww_id; /* the user window id */
97: char ww_center; /* center the label */
98: char ww_hasframe; /* frame it */
99: char ww_keepopen; /* keep it open after the process dies */
100: char *ww_label; /* the user supplied label */
101: struct ww_dim ww_alt; /* alternate position and size */
102: };
103:
104: /* state of a tty */
105: struct ww_tty {
106: #ifndef POSIX_TTY
107: struct sgttyb ww_sgttyb;
108: struct tchars ww_tchars;
109: struct ltchars ww_ltchars;
110: int ww_lmode;
111: int ww_ldisc;
112: #else
113: struct termios ww_termios;
114: #endif
115: int ww_fflags;
116: };
117:
118: union ww_char {
119: short c_w; /* as a word */
120: struct {
121: #if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
122: char C_c; /* the character part */
123: char C_m; /* the mode part */
124: #endif
125: #if BYTE_ORDER == BIG_ENDIAN
126: char C_m; /* the mode part */
127: char C_c; /* the character part */
128: #endif
129: } c_un;
130: };
131: #define c_c c_un.C_c
132: #define c_m c_un.C_m
133:
134: /* for display update */
135: struct ww_update {
136: int best_gain;
137: int best_col;
138: int gain;
139: };
140:
141: /* parts of ww_char */
142: #define WWC_CMASK 0x00ff
143: #define WWC_MMASK 0xff00
144: #define WWC_MSHIFT 8
145:
146: /* c_m bits */
147: #define WWM_REV 0x01 /* reverse video */
148: #define WWM_BLK 0x02 /* blinking */
149: #define WWM_UL 0x04 /* underlined */
150: #define WWM_GRP 0x08 /* graphics */
151: #define WWM_DIM 0x10 /* half intensity */
152: #define WWM_USR 0x20 /* user specified mode */
153: #define WWM_GLS 0x40 /* window only, glass, i.e., transparent */
154:
155: /* ww_state values */
156: #define WWS_INITIAL 0 /* just opened */
157: #define WWS_HASPROC 1 /* has process on pty */
158: #define WWS_DEAD 3 /* child died */
159:
160: /* flags for ww_fmap */
161: #define WWF_U 0x01
162: #define WWF_R 0x02
163: #define WWF_D 0x04
164: #define WWF_L 0x08
165: #define WWF_MASK (WWF_U|WWF_R|WWF_D|WWF_L)
166: #define WWF_LABEL 0x40
167: #define WWF_TOP 0x80
168:
169: /* flags to wwopen() */
170: #define WWO_PTY 0x01 /* want pty */
171: #define WWO_SOCKET 0x02 /* want socket pair */
172: #define WWO_REVERSE 0x04 /* make it all reverse video */
173: #define WWO_GLASS 0x08 /* make it all glass */
174: #define WWO_FRAME 0x10 /* this is a frame window */
175:
176: /* special ww_index value */
177: #define WWX_NOBODY NWW
178:
179: /* error codes */
180: #define WWE_NOERR 0
181: #define WWE_SYS 1 /* system error */
182: #define WWE_NOMEM 2 /* out of memory */
183: #define WWE_TOOMANY 3 /* too many windows */
184: #define WWE_NOPTY 4 /* no more ptys */
185: #define WWE_SIZE 5 /* bad window size */
186: #define WWE_BADTERM 6 /* bad terminal type */
187: #define WWE_CANTDO 7 /* dumb terminal */
188:
189: /* wwtouched[] bits, there used to be more than one */
190: #define WWU_TOUCHED 0x01 /* touched */
191:
192: /* the window structures */
193: struct ww wwhead;
194: struct ww *wwindex[NWW + 1]; /* last location is for wwnobody */
195: struct ww wwnobody;
196:
197: /* tty things */
198: struct ww_tty wwoldtty; /* the old (saved) terminal settings */
199: struct ww_tty wwnewtty; /* the new (current) terminal settings */
200: struct ww_tty wwwintty; /* the terminal settings for windows */
201: char *wwterm; /* the terminal name */
202: char wwtermcap[1024]; /* place for the termcap */
203:
204: /* generally useful variables */
205: int wwnrow, wwncol; /* the screen size */
206: char wwavailmodes; /* actually supported modes */
207: char wwcursormodes; /* the modes for the fake cursor */
208: char wwwrap; /* terminal has auto wrap around */
209: int wwdtablesize; /* result of getdtablesize() call */
210: char **wwsmap; /* the screen map */
211: union ww_char **wwos; /* the old (current) screen */
212: union ww_char **wwns; /* the new (desired) screen */
213: char *wwtouched; /* wwns changed flags */
214: struct ww_update *wwupd; /* for display update */
215: extern int wwbaudmap[]; /* maps stty() baud rate code into number */
216: int wwbaud; /* wwbaudmap[wwoldtty.ww_sgttyb.sg_ospeed] */
217: int wwcursorrow, wwcursorcol; /* where we want the cursor to be */
218: int wwerrno; /* error number */
219:
220: /* statistics */
221: int wwnflush, wwnwr, wwnwre, wwnwrz, wwnwrc;
222: int wwnwwr, wwnwwra, wwnwwrc;
223: int wwntokdef, wwntokuse, wwntokbad, wwntoksave, wwntokc;
224: int wwnupdate, wwnupdline, wwnupdmiss;
225: int wwnupdscan, wwnupdclreol, wwnupdclreos, wwnupdclreosmiss, wwnupdclreosline;
226: int wwnread, wwnreade, wwnreadz, wwnreadc;
227: int wwnwread, wwnwreade, wwnwreadz, wwnwreadd, wwnwreadc, wwnwreadp;
228: int wwnselect, wwnselecte, wwnselectz;
229:
230: /* quicky macros */
231: #define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c))
232: #define wwcurtowin(w) wwsetcursor((w)->ww_cur.r, (w)->ww_cur.c)
233: #define wwunbox(w) wwunframe(w)
234: #define wwclreol(w,r,c) wwclreol1((w), (r), (c), 0)
235: #define wwredrawwin(w) wwredrawwin1((w), (w)->ww_i.t, (w)->ww_i.b, 0)
236: #define wwupdate() wwupdate1(0, wwnrow);
237:
238: /* things for handling input */
239: int wwrint(); /* interrupt handler */
240: struct ww *wwcurwin; /* window to copy input into */
241: char *wwib; /* input (keyboard) buffer */
242: char *wwibe; /* wwib + sizeof buffer */
243: char *wwibp; /* current read position in buffer */
244: char *wwibq; /* current write position in buffer */
245: #define wwgetc() (wwibp < wwibq ? *wwibp++ & 0x7f : -1)
246: #define wwpeekc() (wwibp < wwibq ? *wwibp & 0x7f : -1)
247: #define wwungetc(c) (wwibp > wwib ? *--wwibp = (c) : -1)
248:
249: /* things for short circuiting wwiomux() */
250: char wwintr; /* interrupting */
251: char wwsetjmp; /* want a longjmp() from wwrint() and wwchild() */
252: jmp_buf wwjmpbuf; /* jmpbuf for above */
253: #define wwinterrupt() wwintr
254: #define wwsetintr() do { wwintr = 1; if (wwsetjmp) longjmp(wwjmpbuf, 1); } \
255: while (0)
256: #define wwclrintr() (wwintr = 0)
257:
258: /* the window virtual terminal */
259: #define WWT_TERM "window-v2"
260: #define WWT_TERMCAP "WW|window-v2|window program version 2:\
261: :am:bs:da:db:ms:pt:cr=^M:nl=^J:bl=^G:ta=^I:\
262: :cm=\\EY%+ %+ :le=^H:nd=\\EC:up=\\EA:do=\\EB:ho=\\EH:\
263: :cd=\\EJ:ce=\\EK:cl=\\EE:me=\\Er^?:"
264: #define WWT_REV "se=\\ErA:so=\\EsA:mr=\\EsA:"
265: #define WWT_BLK "BE=\\ErB:BS=\\EsB:mb=\\EsB:"
266: #define WWT_UL "ue=\\ErD:us=\\EsD:"
267: #define WWT_GRP "ae=\\ErH:as=\\EsH:"
268: #define WWT_DIM "HE=\\ErP:HS=\\EsP:mh=\\EsP:"
269: #define WWT_USR "XE=\\Er`:XS=\\Es`:"
270: #define WWT_ALDL "al=\\EL:dl=\\EM:"
271: #define WWT_IMEI "im=\\E@:ei=\\EO:ic=:mi:" /* XXX, ic for emacs bug */
272: #define WWT_IC "ic=\\EP:"
273: #define WWT_DC "dc=\\EN:"
274: char wwwintermcap[1024]; /* terminal-specific but window-independent
275: part of the window termcap */
276:
277: /* our functions */
278: struct ww *wwopen();
279: int wwchild();
280: int wwsuspend();
281: char **wwalloc();
282: char *wwerror();
283:
284: /* c library functions */
285: char *malloc();
286: char *calloc();
287: char *getenv();
288: char *tgetstr();
289: char *rindex();
290: char *strcpy();
291: char *strcat();
292:
293: #undef MIN
294: #undef MAX
295: #define MIN(x, y) ((x) > (y) ? (y) : (x))
296: #define MAX(x, y) ((x) > (y) ? (x) : (y))
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