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1 | /* -*-c-*- |
2 | * |
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3 | * $Id$ |
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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 | |
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29 | /*----- Header files ------------------------------------------------------*/ |
30 | |
31 | #include "config.h" |
32 | #ifdef HAVE_CURSES |
33 | |
34 | #include <errno.h> |
35 | #include <signal.h> |
36 | #include <stdio.h> |
37 | #include <stdlib.h> |
38 | #include <string.h> |
39 | |
40 | #include <sys/types.h> |
41 | #include <unistd.h> |
42 | |
43 | #if defined(HAVE_NCURSES_H) |
44 | # include <ncurses.h> |
45 | #elif defined(HAVE_NCURSES_NCURSES_H) |
46 | # include <ncurses/ncurses.h> |
47 | #elif defined(HAVE_CURSES_H) |
48 | # include <curses.h> |
49 | #else |
50 | # error "Where's your <curses.h> header?" |
51 | #endif |
52 | #include <term.h> |
53 | |
54 | #include <mLib/alloc.h> |
55 | #include <mLib/report.h> |
56 | |
57 | #include "sw.h" |
58 | #include "sw_arch.h" |
59 | #include "pres_curses.h" |
60 | |
61 | #ifndef SIGWINCH |
62 | # undef HAVE_WRESIZE |
63 | #endif |
64 | |
65 | /*----- Data structures ---------------------------------------------------*/ |
66 | |
67 | typedef struct cwin { |
68 | struct cwin *next; |
69 | WINDOW *w; |
70 | int top; |
71 | int height; |
72 | WINDOW *s; |
73 | archent *e; |
74 | } cwin; |
75 | |
76 | /*----- Static variables --------------------------------------------------*/ |
77 | |
78 | static cwin *cwins = 0; |
79 | static int nwins = 0; |
80 | |
81 | /*----- Main code ---------------------------------------------------------*/ |
82 | |
83 | /* --- @sizes@ --- * |
84 | * |
85 | * Arguments: --- |
86 | * |
87 | * Returns: --- |
88 | * |
89 | * Use: Calculates window sizes for all the windows. The heights are |
90 | * determined in a way which doesn't allow rounding errors to be |
91 | * an issue (although there will be up to a line's height |
92 | * difference between two windows). No actual changing of |
93 | * curses structures is done. |
94 | */ |
95 | |
96 | static void sizes(void) |
97 | { |
98 | cwin *c; |
99 | int t = 0, h = LINES, w = nwins; |
100 | |
101 | for (c = cwins; c; c = c->next) { |
102 | int a = h / w; |
103 | c->top = t; |
104 | c->height = a - 1; |
105 | t += a; |
106 | h -= a; |
107 | w--; |
108 | } |
109 | } |
110 | |
111 | /* --- @sig_tstp@ --- */ |
112 | |
113 | #ifdef SIGTSTP |
114 | static void sig_tstp(int s) |
115 | { |
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116 | int e = errno; |
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117 | endwin(); |
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118 | errno = e; |
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119 | raise(SIGSTOP); |
120 | } |
121 | #endif |
122 | |
123 | /* --- @sig_cont@ --- */ |
124 | |
125 | #ifdef SIGTSTP |
126 | static void sig_cont(int s) |
127 | { |
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128 | int e = errno; |
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129 | wrefresh(curscr); |
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130 | errno = e; |
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131 | } |
132 | #endif |
133 | |
134 | /* --- @sig_winch@ --- */ |
135 | |
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136 | #ifdef SIGWINCH |
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137 | |
138 | static void sig_winch(int s) |
139 | { |
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140 | int e = errno; |
141 | |
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142 | #ifdef HAVE_WRESIZE |
143 | cwin *c; |
144 | |
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145 | endwin(); |
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146 | wrefresh(curscr); |
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147 | sizes(); |
148 | for (c = cwins; c; c = c->next) { |
149 | mvwin(c->w, c->top, 0); |
150 | wresize(c->w, c->height, COLS); |
151 | mvwin(c->s, c->top + c->height, 0); |
152 | wnoutrefresh(c->w); |
153 | wnoutrefresh(c->s); |
154 | } |
155 | doupdate(); |
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156 | #else |
157 | endwin(); |
158 | wrefresh(curscr); |
159 | #endif |
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160 | errno = e; |
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161 | } |
162 | |
163 | #endif |
164 | |
165 | /* --- @curses_ok@ --- */ |
166 | |
167 | int curses_ok(void) |
168 | { |
169 | if (!isatty(STDOUT_FILENO)) { |
170 | moan("can't use curses: stdout isn't a terminal"); |
171 | return (0); |
172 | } |
173 | if (setupterm(0, STDOUT_FILENO, 0) == ERR) { |
174 | moan("can't use curses: couldn't read terminfo"); |
175 | return (0); |
176 | } |
177 | if (!tigetstr("cup")) { |
178 | moan("can't use curses: terminal insufficiently winning"); |
179 | return (0); |
180 | } |
181 | return (1); |
182 | } |
183 | |
184 | /* --- @curses_init@ --- */ |
185 | |
186 | int curses_init(archcons *a) |
187 | { |
188 | cwin **cc = &cwins, *c; |
189 | |
190 | /* --- Allocate my window structures --- */ |
191 | |
192 | nwins = 0; |
193 | for (; a; a = a->cdr) { |
194 | archent *e = a->car; |
195 | if (!e->r) |
196 | continue; |
197 | c = xmalloc(sizeof(cwin)); |
198 | e->pres = c; |
199 | c->w = 0; |
200 | c->e = e; |
201 | nwins++; |
202 | *cc = c; |
203 | cc = &c->next; |
204 | } |
205 | *cc = 0; |
206 | |
207 | /* --- Haul curses up by its naughty bits --- */ |
208 | |
209 | initscr(); |
210 | keypad(stdscr, TRUE); |
211 | cbreak(); |
212 | noecho(); |
213 | nonl(); |
214 | def_prog_mode(); |
215 | |
216 | /* --- Grind through everything setting up windows --- */ |
217 | |
218 | sizes(); |
219 | for (c = cwins; c; c = c->next) { |
220 | if ((c->w = newwin(c->height, COLS, c->top, 0)) == 0 || |
221 | (c->s = newwin(1, COLS, c->top + c->height, 0)) == 0) |
222 | goto fail_0; |
223 | scrollok(c->w, TRUE); |
224 | leaveok(c->w, TRUE); |
225 | leaveok(c->s, TRUE); |
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226 | wbkgd(c->s, A_STANDOUT); |
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227 | mvwprintw(c->s, 0, 0, " %s [running]\n", c->e->arch); |
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228 | wnoutrefresh(c->w); |
229 | wnoutrefresh(c->s); |
230 | } |
231 | doupdate(); |
232 | |
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233 | #ifdef SIGWINCH |
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234 | signal(SIGWINCH, sig_winch); |
235 | #endif |
236 | #ifdef SIGTSTP |
237 | signal(SIGTSTP, sig_tstp); |
238 | signal(SIGCONT, sig_cont); |
239 | #endif |
240 | return (0); |
241 | |
242 | fail_0: |
243 | c = cwins; |
244 | while (c) { |
245 | cwin *cc = c->next; |
246 | if (c->w) |
247 | delwin(c->w); |
248 | if (c->s) |
249 | delwin(c->s); |
250 | free(c); |
251 | c = cc; |
252 | } |
253 | endwin(); |
254 | return (-1); |
255 | } |
256 | |
257 | /* --- @curses_output@ --- */ |
258 | |
259 | void curses_output(archent *e, const char *p, size_t sz) |
260 | { |
261 | cwin *c = e->pres; |
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262 | int y, x; |
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263 | while (sz) { |
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264 | switch (*p) { |
265 | case '\r': |
266 | getyx(c->w, y, x); |
267 | wmove(c->w, y, 0); |
268 | break; |
269 | case '\n': |
270 | getyx(c->w, y, x); |
271 | if (y < c->height - 1) |
272 | y++; |
273 | else |
274 | scroll(c->w); |
275 | wmove(c->w, y, 0); |
276 | break; |
277 | default: |
278 | waddch(c->w, *p); |
279 | break; |
280 | } |
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281 | p++; |
282 | sz--; |
283 | } |
284 | wrefresh(c->w); |
285 | } |
286 | |
287 | /* --- @curses_close@ --- */ |
288 | |
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289 | void curses_close(archent *e, int ok, const char *summ) |
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290 | { |
291 | cwin *c = e->pres; |
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292 | mvwprintw(c->s, 0, 0, " %s [%s]\n", e->arch, summ); |
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293 | wrefresh(c->s); |
294 | } |
295 | |
296 | /* --- @curses_done@ --- */ |
297 | |
298 | void curses_done(archcons *a) |
299 | { |
300 | if (opt_flags & optFlag_beep) { |
301 | beep(); |
302 | doupdate(); |
303 | } |
304 | wgetch(cwins->w); |
305 | cwins = 0; |
306 | for (; a; a = a->cdr) { |
307 | archent *e = a->car; |
308 | cwin *c = e->pres; |
309 | delwin(c->w); |
310 | delwin(c->s); |
311 | free(c); |
312 | } |
313 | curses_abort(0); |
314 | } |
315 | |
316 | /* --- @curses_abort@ --- */ |
317 | |
318 | void curses_abort(archcons *a) |
319 | { |
320 | #ifdef HAVE_WRESIZE |
321 | signal(SIGWINCH, SIG_DFL); |
322 | #endif |
323 | #ifdef SIGTSTP |
324 | signal(SIGTSTP, SIG_DFL); |
325 | signal(SIGCONT, SIG_DFL); |
326 | #endif |
327 | endwin(); |
328 | } |
329 | |
330 | /*----- That's all, folks -------------------------------------------------*/ |
331 | |
332 | #else |
333 | int pres_curses__built = 1; |
334 | #endif |