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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: pres_curses.c,v 1.6 1999/07/27 14:04:19 mdw Exp $ |
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4 | * |
5 | * Curses-based output presentation |
6 | * |
7 | * (c) 1999 EBI |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of sw-tools. |
13 | * |
14 | * sw-tools is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * sw-tools is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with sw-tools; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
29 | /*----- Revision history --------------------------------------------------* |
30 | * |
31 | * $Log: pres_curses.c,v $ |
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32 | * Revision 1.6 1999/07/27 14:04:19 mdw |
33 | * (Bug fix) Include the SIGWINCH handler even if `wresize' isn't known. |
34 | * |
35 | * Revision 1.5 1999/07/27 12:49:16 mdw |
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36 | * Slight tidying of resizing terminal handling. |
37 | * |
38 | * Revision 1.4 1999/07/16 16:52:28 mdw |
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39 | * `wbkdset' doesn't work so well. Use `wbkgd' instead. |
40 | * |
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41 | * Revision 1.3 1999/07/16 12:49:58 mdw |
42 | * Improve exit status display. New interface from `doto' project. |
43 | * |
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44 | * Revision 1.2 1999/06/24 15:51:16 mdw |
45 | * Fix signal handlers so they don't corrupt `errno'. |
46 | * |
47 | * Revision 1.1.1.1 1999/06/02 16:53:35 mdw |
48 | * Initial import. |
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49 | * |
50 | */ |
51 | |
52 | /*----- Header files ------------------------------------------------------*/ |
53 | |
54 | #include "config.h" |
55 | #ifdef HAVE_CURSES |
56 | |
57 | #include <errno.h> |
58 | #include <signal.h> |
59 | #include <stdio.h> |
60 | #include <stdlib.h> |
61 | #include <string.h> |
62 | |
63 | #include <sys/types.h> |
64 | #include <unistd.h> |
65 | |
66 | #if defined(HAVE_NCURSES_H) |
67 | # include <ncurses.h> |
68 | #elif defined(HAVE_NCURSES_NCURSES_H) |
69 | # include <ncurses/ncurses.h> |
70 | #elif defined(HAVE_CURSES_H) |
71 | # include <curses.h> |
72 | #else |
73 | # error "Where's your <curses.h> header?" |
74 | #endif |
75 | #include <term.h> |
76 | |
77 | #include <mLib/alloc.h> |
78 | #include <mLib/report.h> |
79 | |
80 | #include "sw.h" |
81 | #include "sw_arch.h" |
82 | #include "pres_curses.h" |
83 | |
84 | #ifndef SIGWINCH |
85 | # undef HAVE_WRESIZE |
86 | #endif |
87 | |
88 | /*----- Data structures ---------------------------------------------------*/ |
89 | |
90 | typedef struct cwin { |
91 | struct cwin *next; |
92 | WINDOW *w; |
93 | int top; |
94 | int height; |
95 | WINDOW *s; |
96 | archent *e; |
97 | } cwin; |
98 | |
99 | /*----- Static variables --------------------------------------------------*/ |
100 | |
101 | static cwin *cwins = 0; |
102 | static int nwins = 0; |
103 | |
104 | /*----- Main code ---------------------------------------------------------*/ |
105 | |
106 | /* --- @sizes@ --- * |
107 | * |
108 | * Arguments: --- |
109 | * |
110 | * Returns: --- |
111 | * |
112 | * Use: Calculates window sizes for all the windows. The heights are |
113 | * determined in a way which doesn't allow rounding errors to be |
114 | * an issue (although there will be up to a line's height |
115 | * difference between two windows). No actual changing of |
116 | * curses structures is done. |
117 | */ |
118 | |
119 | static void sizes(void) |
120 | { |
121 | cwin *c; |
122 | int t = 0, h = LINES, w = nwins; |
123 | |
124 | for (c = cwins; c; c = c->next) { |
125 | int a = h / w; |
126 | c->top = t; |
127 | c->height = a - 1; |
128 | t += a; |
129 | h -= a; |
130 | w--; |
131 | } |
132 | } |
133 | |
134 | /* --- @sig_tstp@ --- */ |
135 | |
136 | #ifdef SIGTSTP |
137 | static void sig_tstp(int s) |
138 | { |
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139 | int e = errno; |
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140 | endwin(); |
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141 | errno = e; |
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142 | raise(SIGSTOP); |
143 | } |
144 | #endif |
145 | |
146 | /* --- @sig_cont@ --- */ |
147 | |
148 | #ifdef SIGTSTP |
149 | static void sig_cont(int s) |
150 | { |
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151 | int e = errno; |
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152 | wrefresh(curscr); |
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153 | errno = e; |
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154 | } |
155 | #endif |
156 | |
157 | /* --- @sig_winch@ --- */ |
158 | |
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159 | #ifdef SIGWINCH |
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160 | |
161 | static void sig_winch(int s) |
162 | { |
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163 | int e = errno; |
164 | |
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165 | #ifdef HAVE_WRESIZE |
166 | cwin *c; |
167 | |
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168 | endwin(); |
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169 | wrefresh(curscr); |
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170 | sizes(); |
171 | for (c = cwins; c; c = c->next) { |
172 | mvwin(c->w, c->top, 0); |
173 | wresize(c->w, c->height, COLS); |
174 | mvwin(c->s, c->top + c->height, 0); |
175 | wnoutrefresh(c->w); |
176 | wnoutrefresh(c->s); |
177 | } |
178 | doupdate(); |
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179 | #else |
180 | endwin(); |
181 | wrefresh(curscr); |
182 | #endif |
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183 | errno = e; |
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184 | } |
185 | |
186 | #endif |
187 | |
188 | /* --- @curses_ok@ --- */ |
189 | |
190 | int curses_ok(void) |
191 | { |
192 | if (!isatty(STDOUT_FILENO)) { |
193 | moan("can't use curses: stdout isn't a terminal"); |
194 | return (0); |
195 | } |
196 | if (setupterm(0, STDOUT_FILENO, 0) == ERR) { |
197 | moan("can't use curses: couldn't read terminfo"); |
198 | return (0); |
199 | } |
200 | if (!tigetstr("cup")) { |
201 | moan("can't use curses: terminal insufficiently winning"); |
202 | return (0); |
203 | } |
204 | return (1); |
205 | } |
206 | |
207 | /* --- @curses_init@ --- */ |
208 | |
209 | int curses_init(archcons *a) |
210 | { |
211 | cwin **cc = &cwins, *c; |
212 | |
213 | /* --- Allocate my window structures --- */ |
214 | |
215 | nwins = 0; |
216 | for (; a; a = a->cdr) { |
217 | archent *e = a->car; |
218 | if (!e->r) |
219 | continue; |
220 | c = xmalloc(sizeof(cwin)); |
221 | e->pres = c; |
222 | c->w = 0; |
223 | c->e = e; |
224 | nwins++; |
225 | *cc = c; |
226 | cc = &c->next; |
227 | } |
228 | *cc = 0; |
229 | |
230 | /* --- Haul curses up by its naughty bits --- */ |
231 | |
232 | initscr(); |
233 | keypad(stdscr, TRUE); |
234 | cbreak(); |
235 | noecho(); |
236 | nonl(); |
237 | def_prog_mode(); |
238 | |
239 | /* --- Grind through everything setting up windows --- */ |
240 | |
241 | sizes(); |
242 | for (c = cwins; c; c = c->next) { |
243 | if ((c->w = newwin(c->height, COLS, c->top, 0)) == 0 || |
244 | (c->s = newwin(1, COLS, c->top + c->height, 0)) == 0) |
245 | goto fail_0; |
246 | scrollok(c->w, TRUE); |
247 | leaveok(c->w, TRUE); |
248 | leaveok(c->s, TRUE); |
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249 | wbkgd(c->s, A_STANDOUT); |
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250 | mvwprintw(c->s, 0, 0, " %s [running]\n", c->e->arch); |
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251 | wnoutrefresh(c->w); |
252 | wnoutrefresh(c->s); |
253 | } |
254 | doupdate(); |
255 | |
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256 | #ifdef SIGWINCH |
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257 | signal(SIGWINCH, sig_winch); |
258 | #endif |
259 | #ifdef SIGTSTP |
260 | signal(SIGTSTP, sig_tstp); |
261 | signal(SIGCONT, sig_cont); |
262 | #endif |
263 | return (0); |
264 | |
265 | fail_0: |
266 | c = cwins; |
267 | while (c) { |
268 | cwin *cc = c->next; |
269 | if (c->w) |
270 | delwin(c->w); |
271 | if (c->s) |
272 | delwin(c->s); |
273 | free(c); |
274 | c = cc; |
275 | } |
276 | endwin(); |
277 | return (-1); |
278 | } |
279 | |
280 | /* --- @curses_output@ --- */ |
281 | |
282 | void curses_output(archent *e, const char *p, size_t sz) |
283 | { |
284 | cwin *c = e->pres; |
285 | while (sz) { |
286 | waddch(c->w, *p); |
287 | p++; |
288 | sz--; |
289 | } |
290 | wrefresh(c->w); |
291 | } |
292 | |
293 | /* --- @curses_close@ --- */ |
294 | |
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295 | void curses_close(archent *e, int ok, const char *summ) |
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296 | { |
297 | cwin *c = e->pres; |
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298 | mvwprintw(c->s, 0, 0, " %s [%s]\n", e->arch, summ); |
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299 | wrefresh(c->s); |
300 | } |
301 | |
302 | /* --- @curses_done@ --- */ |
303 | |
304 | void curses_done(archcons *a) |
305 | { |
306 | if (opt_flags & optFlag_beep) { |
307 | beep(); |
308 | doupdate(); |
309 | } |
310 | wgetch(cwins->w); |
311 | cwins = 0; |
312 | for (; a; a = a->cdr) { |
313 | archent *e = a->car; |
314 | cwin *c = e->pres; |
315 | delwin(c->w); |
316 | delwin(c->s); |
317 | free(c); |
318 | } |
319 | curses_abort(0); |
320 | } |
321 | |
322 | /* --- @curses_abort@ --- */ |
323 | |
324 | void curses_abort(archcons *a) |
325 | { |
326 | #ifdef HAVE_WRESIZE |
327 | signal(SIGWINCH, SIG_DFL); |
328 | #endif |
329 | #ifdef SIGTSTP |
330 | signal(SIGTSTP, SIG_DFL); |
331 | signal(SIGCONT, SIG_DFL); |
332 | #endif |
333 | endwin(); |
334 | } |
335 | |
336 | /*----- That's all, folks -------------------------------------------------*/ |
337 | |
338 | #else |
339 | int pres_curses__built = 1; |
340 | #endif |