3315e8b3 |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: pres_curses.c,v 1.1 1999/06/02 16:53:35 mdw Exp $ |
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 $ |
32 | * Revision 1.1 1999/06/02 16:53:35 mdw |
33 | * Initial revision |
34 | * |
35 | */ |
36 | |
37 | /*----- Header files ------------------------------------------------------*/ |
38 | |
39 | #include "config.h" |
40 | #ifdef HAVE_CURSES |
41 | |
42 | #include <errno.h> |
43 | #include <signal.h> |
44 | #include <stdio.h> |
45 | #include <stdlib.h> |
46 | #include <string.h> |
47 | |
48 | #include <sys/types.h> |
49 | #include <unistd.h> |
50 | |
51 | #if defined(HAVE_NCURSES_H) |
52 | # include <ncurses.h> |
53 | #elif defined(HAVE_NCURSES_NCURSES_H) |
54 | # include <ncurses/ncurses.h> |
55 | #elif defined(HAVE_CURSES_H) |
56 | # include <curses.h> |
57 | #else |
58 | # error "Where's your <curses.h> header?" |
59 | #endif |
60 | #include <term.h> |
61 | |
62 | #include <mLib/alloc.h> |
63 | #include <mLib/report.h> |
64 | |
65 | #include "sw.h" |
66 | #include "sw_arch.h" |
67 | #include "pres_curses.h" |
68 | |
69 | #ifndef SIGWINCH |
70 | # undef HAVE_WRESIZE |
71 | #endif |
72 | |
73 | /*----- Data structures ---------------------------------------------------*/ |
74 | |
75 | typedef struct cwin { |
76 | struct cwin *next; |
77 | WINDOW *w; |
78 | int top; |
79 | int height; |
80 | WINDOW *s; |
81 | archent *e; |
82 | } cwin; |
83 | |
84 | /*----- Static variables --------------------------------------------------*/ |
85 | |
86 | static cwin *cwins = 0; |
87 | static int nwins = 0; |
88 | |
89 | /*----- Main code ---------------------------------------------------------*/ |
90 | |
91 | /* --- @sizes@ --- * |
92 | * |
93 | * Arguments: --- |
94 | * |
95 | * Returns: --- |
96 | * |
97 | * Use: Calculates window sizes for all the windows. The heights are |
98 | * determined in a way which doesn't allow rounding errors to be |
99 | * an issue (although there will be up to a line's height |
100 | * difference between two windows). No actual changing of |
101 | * curses structures is done. |
102 | */ |
103 | |
104 | static void sizes(void) |
105 | { |
106 | cwin *c; |
107 | int t = 0, h = LINES, w = nwins; |
108 | |
109 | for (c = cwins; c; c = c->next) { |
110 | int a = h / w; |
111 | c->top = t; |
112 | c->height = a - 1; |
113 | t += a; |
114 | h -= a; |
115 | w--; |
116 | } |
117 | } |
118 | |
119 | /* --- @sig_tstp@ --- */ |
120 | |
121 | #ifdef SIGTSTP |
122 | static void sig_tstp(int s) |
123 | { |
124 | endwin(); |
125 | raise(SIGSTOP); |
126 | } |
127 | #endif |
128 | |
129 | /* --- @sig_cont@ --- */ |
130 | |
131 | #ifdef SIGTSTP |
132 | static void sig_cont(int s) |
133 | { |
134 | wrefresh(curscr); |
135 | } |
136 | #endif |
137 | |
138 | /* --- @sig_winch@ --- */ |
139 | |
140 | #ifdef HAVE_WRESIZE |
141 | |
142 | static void sig_winch(int s) |
143 | { |
144 | cwin *c; |
145 | endwin(); |
146 | refresh(); |
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(); |
156 | } |
157 | |
158 | #endif |
159 | |
160 | /* --- @curses_ok@ --- */ |
161 | |
162 | int curses_ok(void) |
163 | { |
164 | if (!isatty(STDOUT_FILENO)) { |
165 | moan("can't use curses: stdout isn't a terminal"); |
166 | return (0); |
167 | } |
168 | if (setupterm(0, STDOUT_FILENO, 0) == ERR) { |
169 | moan("can't use curses: couldn't read terminfo"); |
170 | return (0); |
171 | } |
172 | if (!tigetstr("cup")) { |
173 | moan("can't use curses: terminal insufficiently winning"); |
174 | return (0); |
175 | } |
176 | return (1); |
177 | } |
178 | |
179 | /* --- @curses_init@ --- */ |
180 | |
181 | int curses_init(archcons *a) |
182 | { |
183 | cwin **cc = &cwins, *c; |
184 | |
185 | /* --- Allocate my window structures --- */ |
186 | |
187 | nwins = 0; |
188 | for (; a; a = a->cdr) { |
189 | archent *e = a->car; |
190 | if (!e->r) |
191 | continue; |
192 | c = xmalloc(sizeof(cwin)); |
193 | e->pres = c; |
194 | c->w = 0; |
195 | c->e = e; |
196 | nwins++; |
197 | *cc = c; |
198 | cc = &c->next; |
199 | } |
200 | *cc = 0; |
201 | |
202 | /* --- Haul curses up by its naughty bits --- */ |
203 | |
204 | initscr(); |
205 | keypad(stdscr, TRUE); |
206 | cbreak(); |
207 | noecho(); |
208 | nonl(); |
209 | def_prog_mode(); |
210 | |
211 | /* --- Grind through everything setting up windows --- */ |
212 | |
213 | sizes(); |
214 | for (c = cwins; c; c = c->next) { |
215 | if ((c->w = newwin(c->height, COLS, c->top, 0)) == 0 || |
216 | (c->s = newwin(1, COLS, c->top + c->height, 0)) == 0) |
217 | goto fail_0; |
218 | scrollok(c->w, TRUE); |
219 | leaveok(c->w, TRUE); |
220 | leaveok(c->s, TRUE); |
221 | wbkgdset(c->s, A_STANDOUT); |
222 | werase(c->s); |
223 | mvwprintw(c->s, 0, 0, " %s [running]\n", c->e->arch); |
224 | wnoutrefresh(c->w); |
225 | wnoutrefresh(c->s); |
226 | } |
227 | doupdate(); |
228 | |
229 | #ifdef HAVE_WRESIZE |
230 | signal(SIGWINCH, sig_winch); |
231 | #endif |
232 | #ifdef SIGTSTP |
233 | signal(SIGTSTP, sig_tstp); |
234 | signal(SIGCONT, sig_cont); |
235 | #endif |
236 | return (0); |
237 | |
238 | fail_0: |
239 | c = cwins; |
240 | while (c) { |
241 | cwin *cc = c->next; |
242 | if (c->w) |
243 | delwin(c->w); |
244 | if (c->s) |
245 | delwin(c->s); |
246 | free(c); |
247 | c = cc; |
248 | } |
249 | endwin(); |
250 | return (-1); |
251 | } |
252 | |
253 | /* --- @curses_output@ --- */ |
254 | |
255 | void curses_output(archent *e, const char *p, size_t sz) |
256 | { |
257 | cwin *c = e->pres; |
258 | while (sz) { |
259 | waddch(c->w, *p); |
260 | p++; |
261 | sz--; |
262 | } |
263 | wrefresh(c->w); |
264 | } |
265 | |
266 | /* --- @curses_close@ --- */ |
267 | |
268 | void curses_close(archent *e, int ok) |
269 | { |
270 | cwin *c = e->pres; |
271 | mvwprintw(c->s, 0, 0, " %s [%s]\n", e->arch, ok ? "finished" : "failed"); |
272 | wrefresh(c->s); |
273 | } |
274 | |
275 | /* --- @curses_done@ --- */ |
276 | |
277 | void curses_done(archcons *a) |
278 | { |
279 | if (opt_flags & optFlag_beep) { |
280 | beep(); |
281 | doupdate(); |
282 | } |
283 | wgetch(cwins->w); |
284 | cwins = 0; |
285 | for (; a; a = a->cdr) { |
286 | archent *e = a->car; |
287 | cwin *c = e->pres; |
288 | delwin(c->w); |
289 | delwin(c->s); |
290 | free(c); |
291 | } |
292 | curses_abort(0); |
293 | } |
294 | |
295 | /* --- @curses_abort@ --- */ |
296 | |
297 | void curses_abort(archcons *a) |
298 | { |
299 | #ifdef HAVE_WRESIZE |
300 | signal(SIGWINCH, SIG_DFL); |
301 | #endif |
302 | #ifdef SIGTSTP |
303 | signal(SIGTSTP, SIG_DFL); |
304 | signal(SIGCONT, SIG_DFL); |
305 | #endif |
306 | endwin(); |
307 | } |
308 | |
309 | /*----- That's all, folks -------------------------------------------------*/ |
310 | |
311 | #else |
312 | int pres_curses__built = 1; |
313 | #endif |