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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: pres_curses.c,v 1.4 1999/07/16 16:52:28 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 1.4 1999/07/16 16:52:28 mdw |
33 | * `wbkdset' doesn't work so well. Use `wbkgd' instead. |
34 | * |
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35 | * Revision 1.3 1999/07/16 12:49:58 mdw |
36 | * Improve exit status display. New interface from `doto' project. |
37 | * |
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38 | * Revision 1.2 1999/06/24 15:51:16 mdw |
39 | * Fix signal handlers so they don't corrupt `errno'. |
40 | * |
41 | * Revision 1.1.1.1 1999/06/02 16:53:35 mdw |
42 | * Initial import. |
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43 | * |
44 | */ |
45 | |
46 | /*----- Header files ------------------------------------------------------*/ |
47 | |
48 | #include "config.h" |
49 | #ifdef HAVE_CURSES |
50 | |
51 | #include <errno.h> |
52 | #include <signal.h> |
53 | #include <stdio.h> |
54 | #include <stdlib.h> |
55 | #include <string.h> |
56 | |
57 | #include <sys/types.h> |
58 | #include <unistd.h> |
59 | |
60 | #if defined(HAVE_NCURSES_H) |
61 | # include <ncurses.h> |
62 | #elif defined(HAVE_NCURSES_NCURSES_H) |
63 | # include <ncurses/ncurses.h> |
64 | #elif defined(HAVE_CURSES_H) |
65 | # include <curses.h> |
66 | #else |
67 | # error "Where's your <curses.h> header?" |
68 | #endif |
69 | #include <term.h> |
70 | |
71 | #include <mLib/alloc.h> |
72 | #include <mLib/report.h> |
73 | |
74 | #include "sw.h" |
75 | #include "sw_arch.h" |
76 | #include "pres_curses.h" |
77 | |
78 | #ifndef SIGWINCH |
79 | # undef HAVE_WRESIZE |
80 | #endif |
81 | |
82 | /*----- Data structures ---------------------------------------------------*/ |
83 | |
84 | typedef struct cwin { |
85 | struct cwin *next; |
86 | WINDOW *w; |
87 | int top; |
88 | int height; |
89 | WINDOW *s; |
90 | archent *e; |
91 | } cwin; |
92 | |
93 | /*----- Static variables --------------------------------------------------*/ |
94 | |
95 | static cwin *cwins = 0; |
96 | static int nwins = 0; |
97 | |
98 | /*----- Main code ---------------------------------------------------------*/ |
99 | |
100 | /* --- @sizes@ --- * |
101 | * |
102 | * Arguments: --- |
103 | * |
104 | * Returns: --- |
105 | * |
106 | * Use: Calculates window sizes for all the windows. The heights are |
107 | * determined in a way which doesn't allow rounding errors to be |
108 | * an issue (although there will be up to a line's height |
109 | * difference between two windows). No actual changing of |
110 | * curses structures is done. |
111 | */ |
112 | |
113 | static void sizes(void) |
114 | { |
115 | cwin *c; |
116 | int t = 0, h = LINES, w = nwins; |
117 | |
118 | for (c = cwins; c; c = c->next) { |
119 | int a = h / w; |
120 | c->top = t; |
121 | c->height = a - 1; |
122 | t += a; |
123 | h -= a; |
124 | w--; |
125 | } |
126 | } |
127 | |
128 | /* --- @sig_tstp@ --- */ |
129 | |
130 | #ifdef SIGTSTP |
131 | static void sig_tstp(int s) |
132 | { |
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133 | int e = errno; |
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134 | endwin(); |
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135 | errno = e; |
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136 | raise(SIGSTOP); |
137 | } |
138 | #endif |
139 | |
140 | /* --- @sig_cont@ --- */ |
141 | |
142 | #ifdef SIGTSTP |
143 | static void sig_cont(int s) |
144 | { |
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145 | int e = errno; |
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146 | wrefresh(curscr); |
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147 | errno = e; |
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148 | } |
149 | #endif |
150 | |
151 | /* --- @sig_winch@ --- */ |
152 | |
153 | #ifdef HAVE_WRESIZE |
154 | |
155 | static void sig_winch(int s) |
156 | { |
157 | cwin *c; |
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158 | int e = errno; |
159 | |
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160 | endwin(); |
161 | refresh(); |
162 | sizes(); |
163 | for (c = cwins; c; c = c->next) { |
164 | mvwin(c->w, c->top, 0); |
165 | wresize(c->w, c->height, COLS); |
166 | mvwin(c->s, c->top + c->height, 0); |
167 | wnoutrefresh(c->w); |
168 | wnoutrefresh(c->s); |
169 | } |
170 | doupdate(); |
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171 | errno = e; |
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172 | } |
173 | |
174 | #endif |
175 | |
176 | /* --- @curses_ok@ --- */ |
177 | |
178 | int curses_ok(void) |
179 | { |
180 | if (!isatty(STDOUT_FILENO)) { |
181 | moan("can't use curses: stdout isn't a terminal"); |
182 | return (0); |
183 | } |
184 | if (setupterm(0, STDOUT_FILENO, 0) == ERR) { |
185 | moan("can't use curses: couldn't read terminfo"); |
186 | return (0); |
187 | } |
188 | if (!tigetstr("cup")) { |
189 | moan("can't use curses: terminal insufficiently winning"); |
190 | return (0); |
191 | } |
192 | return (1); |
193 | } |
194 | |
195 | /* --- @curses_init@ --- */ |
196 | |
197 | int curses_init(archcons *a) |
198 | { |
199 | cwin **cc = &cwins, *c; |
200 | |
201 | /* --- Allocate my window structures --- */ |
202 | |
203 | nwins = 0; |
204 | for (; a; a = a->cdr) { |
205 | archent *e = a->car; |
206 | if (!e->r) |
207 | continue; |
208 | c = xmalloc(sizeof(cwin)); |
209 | e->pres = c; |
210 | c->w = 0; |
211 | c->e = e; |
212 | nwins++; |
213 | *cc = c; |
214 | cc = &c->next; |
215 | } |
216 | *cc = 0; |
217 | |
218 | /* --- Haul curses up by its naughty bits --- */ |
219 | |
220 | initscr(); |
221 | keypad(stdscr, TRUE); |
222 | cbreak(); |
223 | noecho(); |
224 | nonl(); |
225 | def_prog_mode(); |
226 | |
227 | /* --- Grind through everything setting up windows --- */ |
228 | |
229 | sizes(); |
230 | for (c = cwins; c; c = c->next) { |
231 | if ((c->w = newwin(c->height, COLS, c->top, 0)) == 0 || |
232 | (c->s = newwin(1, COLS, c->top + c->height, 0)) == 0) |
233 | goto fail_0; |
234 | scrollok(c->w, TRUE); |
235 | leaveok(c->w, TRUE); |
236 | leaveok(c->s, TRUE); |
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237 | wbkgd(c->s, A_STANDOUT); |
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238 | mvwprintw(c->s, 0, 0, " %s [running]\n", c->e->arch); |
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239 | wnoutrefresh(c->w); |
240 | wnoutrefresh(c->s); |
241 | } |
242 | doupdate(); |
243 | |
244 | #ifdef HAVE_WRESIZE |
245 | signal(SIGWINCH, sig_winch); |
246 | #endif |
247 | #ifdef SIGTSTP |
248 | signal(SIGTSTP, sig_tstp); |
249 | signal(SIGCONT, sig_cont); |
250 | #endif |
251 | return (0); |
252 | |
253 | fail_0: |
254 | c = cwins; |
255 | while (c) { |
256 | cwin *cc = c->next; |
257 | if (c->w) |
258 | delwin(c->w); |
259 | if (c->s) |
260 | delwin(c->s); |
261 | free(c); |
262 | c = cc; |
263 | } |
264 | endwin(); |
265 | return (-1); |
266 | } |
267 | |
268 | /* --- @curses_output@ --- */ |
269 | |
270 | void curses_output(archent *e, const char *p, size_t sz) |
271 | { |
272 | cwin *c = e->pres; |
273 | while (sz) { |
274 | waddch(c->w, *p); |
275 | p++; |
276 | sz--; |
277 | } |
278 | wrefresh(c->w); |
279 | } |
280 | |
281 | /* --- @curses_close@ --- */ |
282 | |
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283 | void curses_close(archent *e, int ok, const char *summ) |
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284 | { |
285 | cwin *c = e->pres; |
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286 | mvwprintw(c->s, 0, 0, " %s [%s]\n", e->arch, summ); |
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287 | wrefresh(c->s); |
288 | } |
289 | |
290 | /* --- @curses_done@ --- */ |
291 | |
292 | void curses_done(archcons *a) |
293 | { |
294 | if (opt_flags & optFlag_beep) { |
295 | beep(); |
296 | doupdate(); |
297 | } |
298 | wgetch(cwins->w); |
299 | cwins = 0; |
300 | for (; a; a = a->cdr) { |
301 | archent *e = a->car; |
302 | cwin *c = e->pres; |
303 | delwin(c->w); |
304 | delwin(c->s); |
305 | free(c); |
306 | } |
307 | curses_abort(0); |
308 | } |
309 | |
310 | /* --- @curses_abort@ --- */ |
311 | |
312 | void curses_abort(archcons *a) |
313 | { |
314 | #ifdef HAVE_WRESIZE |
315 | signal(SIGWINCH, SIG_DFL); |
316 | #endif |
317 | #ifdef SIGTSTP |
318 | signal(SIGTSTP, SIG_DFL); |
319 | signal(SIGCONT, SIG_DFL); |
320 | #endif |
321 | endwin(); |
322 | } |
323 | |
324 | /*----- That's all, folks -------------------------------------------------*/ |
325 | |
326 | #else |
327 | int pres_curses__built = 1; |
328 | #endif |