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Fix a memory leak, from Japin Li in GitHub issue 3358.
[tmux.git] / popup.c
blob12f31c4030454fe6f0c97ef3f4cd5a6e4d2181e2
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2020 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20 #include <sys/wait.h>
21
22 #include <paths.h>
23 #include <signal.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <unistd.h>
27
28 #include "tmux.h"
29
30 struct popup_data {
31 struct client *c;
32 struct cmdq_item *item;
33 int flags;
34 char *title;
35
36 struct grid_cell border_cell;
37 enum box_lines border_lines;
38
39 struct screen s;
40 struct grid_cell defaults;
41 struct colour_palette palette;
42
43 struct job *job;
44 struct input_ctx *ictx;
45 int status;
46 popup_close_cb cb;
47 void *arg;
48
49 struct menu *menu;
50 struct menu_data *md;
51 int close;
52
53 /* Current position and size. */
54 u_int px;
55 u_int py;
56 u_int sx;
57 u_int sy;
58
59 /* Preferred position and size. */
60 u_int ppx;
61 u_int ppy;
62 u_int psx;
63 u_int psy;
64
65 enum { OFF, MOVE, SIZE } dragging;
66 u_int dx;
67 u_int dy;
68
69 u_int lx;
70 u_int ly;
71 u_int lb;
72 };
73
74 struct popup_editor {
75 char *path;
76 popup_finish_edit_cb cb;
77 void *arg;
78 };
79
80 static const struct menu_item popup_menu_items[] = {
81 { "Close", 'q', NULL },
82 { "#{?buffer_name,Paste #[underscore]#{buffer_name},}", 'p', NULL },
83 { "", KEYC_NONE, NULL },
84 { "Fill Space", 'F', NULL },
85 { "Centre", 'C', NULL },
86 { "", KEYC_NONE, NULL },
87 { "To Horizontal Pane", 'h', NULL },
88 { "To Vertical Pane", 'v', NULL },
89
90 { NULL, KEYC_NONE, NULL }
91 };
92
93 static const struct menu_item popup_internal_menu_items[] = {
94 { "Close", 'q', NULL },
95 { "", KEYC_NONE, NULL },
96 { "Fill Space", 'F', NULL },
97 { "Centre", 'C', NULL },
98
99 { NULL, KEYC_NONE, NULL }
100 };
101
102 static void
103 popup_redraw_cb(const struct tty_ctx *ttyctx)
104 {
105 struct popup_data *pd = ttyctx->arg;
106
107 pd->c->flags |= CLIENT_REDRAWOVERLAY;
108 }
109
110 static int
111 popup_set_client_cb(struct tty_ctx *ttyctx, struct client *c)
112 {
113 struct popup_data *pd = ttyctx->arg;
114
115 if (c != pd->c)
116 return (0);
117 if (pd->c->flags & CLIENT_REDRAWOVERLAY)
118 return (0);
119
120 ttyctx->bigger = 0;
121 ttyctx->wox = 0;
122 ttyctx->woy = 0;
123 ttyctx->wsx = c->tty.sx;
124 ttyctx->wsy = c->tty.sy;
125
126 if (pd->border_lines == BOX_LINES_NONE) {
127 ttyctx->xoff = ttyctx->rxoff = pd->px;
128 ttyctx->yoff = ttyctx->ryoff = pd->py;
129 } else {
130 ttyctx->xoff = ttyctx->rxoff = pd->px + 1;
131 ttyctx->yoff = ttyctx->ryoff = pd->py + 1;
132 }
133
134 return (1);
135 }
136
137 static void
138 popup_init_ctx_cb(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
139 {
140 struct popup_data *pd = ctx->arg;
141
142 memcpy(&ttyctx->defaults, &pd->defaults, sizeof ttyctx->defaults);
143 ttyctx->palette = &pd->palette;
144 ttyctx->redraw_cb = popup_redraw_cb;
145 ttyctx->set_client_cb = popup_set_client_cb;
146 ttyctx->arg = pd;
147 }
148
149 static struct screen *
150 popup_mode_cb(__unused struct client *c, void *data, u_int *cx, u_int *cy)
151 {
152 struct popup_data *pd = data;
153
154 if (pd->md != NULL)
155 return (menu_mode_cb(c, pd->md, cx, cy));
156
157 if (pd->border_lines == BOX_LINES_NONE) {
158 *cx = pd->px + pd->s.cx;
159 *cy = pd->py + pd->s.cy;
160 } else {
161 *cx = pd->px + 1 + pd->s.cx;
162 *cy = pd->py + 1 + pd->s.cy;
163 }
164 return (&pd->s);
165 }
166
167 /* Return parts of the input range which are not obstructed by the popup. */
168 static void
169 popup_check_cb(struct client* c, void *data, u_int px, u_int py, u_int nx,
170 struct overlay_ranges *r)
171 {
172 struct popup_data *pd = data;
173 struct overlay_ranges or[2];
174 u_int i, j, k = 0;
175
176 if (pd->md != NULL) {
177 /* Check each returned range for the menu against the popup. */
178 menu_check_cb(c, pd->md, px, py, nx, r);
179 for (i = 0; i < 2; i++) {
180 server_client_overlay_range(pd->px, pd->py, pd->sx,
181 pd->sy, r->px[i], py, r->nx[i], &or[i]);
182 }
183
184 /*
185 * or has up to OVERLAY_MAX_RANGES non-overlapping ranges,
186 * ordered from left to right. Collect them in the output.
187 */
188 for (i = 0; i < 2; i++) {
189 /* Each or[i] only has 2 ranges. */
190 for (j = 0; j < 2; j++) {
191 if (or[i].nx[j] > 0) {
192 r->px[k] = or[i].px[j];
193 r->nx[k] = or[i].nx[j];
194 k++;
195 }
196 }
197 }
198
199 /* Zero remaining ranges if any. */
200 for (i = k; i < OVERLAY_MAX_RANGES; i++) {
201 r->px[i] = 0;
202 r->nx[i] = 0;
203 }
204
205 return;
206 }
207
208 server_client_overlay_range(pd->px, pd->py, pd->sx, pd->sy, px, py, nx,
209 r);
210 }
211
212 static void
213 popup_draw_cb(struct client *c, void *data, struct screen_redraw_ctx *rctx)
214 {
215 struct popup_data *pd = data;
216 struct tty *tty = &c->tty;
217 struct screen s;
218 struct screen_write_ctx ctx;
219 u_int i, px = pd->px, py = pd->py;
220 struct colour_palette *palette = &pd->palette;
221 struct grid_cell defaults;
222
223 screen_init(&s, pd->sx, pd->sy, 0);
224 screen_write_start(&ctx, &s);
225 screen_write_clearscreen(&ctx, 8);
226
227 if (pd->border_lines == BOX_LINES_NONE) {
228 screen_write_cursormove(&ctx, 0, 0, 0);
229 screen_write_fast_copy(&ctx, &pd->s, 0, 0, pd->sx, pd->sy);
230 } else if (pd->sx > 2 && pd->sy > 2) {
231 screen_write_box(&ctx, pd->sx, pd->sy, pd->border_lines,
232 &pd->border_cell, pd->title);
233 screen_write_cursormove(&ctx, 1, 1, 0);
234 screen_write_fast_copy(&ctx, &pd->s, 0, 0, pd->sx - 2,
235 pd->sy - 2);
236 }
237 screen_write_stop(&ctx);
238
239 memcpy(&defaults, &pd->defaults, sizeof defaults);
240 if (defaults.fg == 8)
241 defaults.fg = palette->fg;
242 if (defaults.bg == 8)
243 defaults.bg = palette->bg;
244
245 if (pd->md != NULL) {
246 c->overlay_check = menu_check_cb;
247 c->overlay_data = pd->md;
248 } else {
249 c->overlay_check = NULL;
250 c->overlay_data = NULL;
251 }
252 for (i = 0; i < pd->sy; i++) {
253 tty_draw_line(tty, &s, 0, i, pd->sx, px, py + i, &defaults,
254 palette);
255 }
256 if (pd->md != NULL) {
257 c->overlay_check = NULL;
258 c->overlay_data = NULL;
259 menu_draw_cb(c, pd->md, rctx);
260 }
261 c->overlay_check = popup_check_cb;
262 c->overlay_data = pd;
263 }
264
265 static void
266 popup_free_cb(struct client *c, void *data)
267 {
268 struct popup_data *pd = data;
269 struct cmdq_item *item = pd->item;
270
271 if (pd->md != NULL)
272 menu_free_cb(c, pd->md);
273
274 if (pd->cb != NULL)
275 pd->cb(pd->status, pd->arg);
276
277 if (item != NULL) {
278 if (cmdq_get_client(item) != NULL &&
279 cmdq_get_client(item)->session == NULL)
280 cmdq_get_client(item)->retval = pd->status;
281 cmdq_continue(item);
282 }
283 server_client_unref(pd->c);
284
285 if (pd->job != NULL)
286 job_free(pd->job);
287 input_free(pd->ictx);
288
289 screen_free(&pd->s);
290 colour_palette_free(&pd->palette);
291
292 free(pd->title);
293 free(pd);
294 }
295
296 static void
297 popup_resize_cb(__unused struct client *c, void *data)
298 {
299 struct popup_data *pd = data;
300 struct tty *tty = &c->tty;
301
302 if (pd == NULL)
303 return;
304 if (pd->md != NULL)
305 menu_free_cb(c, pd->md);
306
307 /* Adjust position and size. */
308 if (pd->psy > tty->sy)
309 pd->sy = tty->sy;
310 else
311 pd->sy = pd->psy;
312 if (pd->psx > tty->sx)
313 pd->sx = tty->sx;
314 else
315 pd->sx = pd->psx;
316 if (pd->ppy + pd->sy > tty->sy)
317 pd->py = tty->sy - pd->sy;
318 else
319 pd->py = pd->ppy;
320 if (pd->ppx + pd->sx > tty->sx)
321 pd->px = tty->sx - pd->sx;
322 else
323 pd->px = pd->ppx;
324
325 /* Avoid zero size screens. */
326 if (pd->border_lines == BOX_LINES_NONE) {
327 screen_resize(&pd->s, pd->sx, pd->sy, 0);
328 if (pd->job != NULL)
329 job_resize(pd->job, pd->sx, pd->sy );
330 } else if (pd->sx > 2 && pd->sy > 2) {
331 screen_resize(&pd->s, pd->sx - 2, pd->sy - 2, 0);
332 if (pd->job != NULL)
333 job_resize(pd->job, pd->sx - 2, pd->sy - 2);
334 }
335 }
336
337 static void
338 popup_make_pane(struct popup_data *pd, enum layout_type type)
339 {
340 struct client *c = pd->c;
341 struct session *s = c->session;
342 struct window *w = s->curw->window;
343 struct layout_cell *lc;
344 struct window_pane *wp = w->active, *new_wp;
345 u_int hlimit;
346 const char *shell;
347
348 window_unzoom(w);
349
350 lc = layout_split_pane(wp, type, -1, 0);
351 hlimit = options_get_number(s->options, "history-limit");
352 new_wp = window_add_pane(wp->window, NULL, hlimit, 0);
353 layout_assign_pane(lc, new_wp, 0);
354
355 new_wp->fd = job_transfer(pd->job, &new_wp->pid, new_wp->tty,
356 sizeof new_wp->tty);
357 pd->job = NULL;
358
359 screen_set_title(&pd->s, new_wp->base.title);
360 screen_free(&new_wp->base);
361 memcpy(&new_wp->base, &pd->s, sizeof wp->base);
362 screen_resize(&new_wp->base, new_wp->sx, new_wp->sy, 1);
363 screen_init(&pd->s, 1, 1, 0);
364
365 shell = options_get_string(s->options, "default-shell");
366 if (!checkshell(shell))
367 shell = _PATH_BSHELL;
368 new_wp->shell = xstrdup(shell);
369
370 window_pane_set_event(new_wp);
371 window_set_active_pane(w, new_wp, 1);
372 new_wp->flags |= PANE_CHANGED;
373
374 pd->close = 1;
375 }
376
377 static void
378 popup_menu_done(__unused struct menu *menu, __unused u_int choice,
379 key_code key, void *data)
380 {
381 struct popup_data *pd = data;
382 struct client *c = pd->c;
383 struct paste_buffer *pb;
384 const char *buf;
385 size_t len;
386
387 pd->md = NULL;
388 pd->menu = NULL;
389 server_redraw_client(pd->c);
390
391 switch (key) {
392 case 'p':
393 pb = paste_get_top(NULL);
394 if (pb != NULL) {
395 buf = paste_buffer_data(pb, &len);
396 bufferevent_write(job_get_event(pd->job), buf, len);
397 }
398 break;
399 case 'F':
400 pd->sx = c->tty.sx;
401 pd->sy = c->tty.sy;
402 pd->px = 0;
403 pd->py = 0;
404 server_redraw_client(c);
405 break;
406 case 'C':
407 pd->px = c->tty.sx / 2 - pd->sx / 2;
408 pd->py = c->tty.sy / 2 - pd->sy / 2;
409 server_redraw_client(c);
410 break;
411 case 'h':
412 popup_make_pane(pd, LAYOUT_LEFTRIGHT);
413 break;
414 case 'v':
415 popup_make_pane(pd, LAYOUT_TOPBOTTOM);
416 break;
417 case 'q':
418 pd->close = 1;
419 break;
420 }
421 }
422
423 static void
424 popup_handle_drag(struct client *c, struct popup_data *pd,
425 struct mouse_event *m)
426 {
427 u_int px, py;
428
429 if (!MOUSE_DRAG(m->b))
430 pd->dragging = OFF;
431 else if (pd->dragging == MOVE) {
432 if (m->x < pd->dx)
433 px = 0;
434 else if (m->x - pd->dx + pd->sx > c->tty.sx)
435 px = c->tty.sx - pd->sx;
436 else
437 px = m->x - pd->dx;
438 if (m->y < pd->dy)
439 py = 0;
440 else if (m->y - pd->dy + pd->sy > c->tty.sy)
441 py = c->tty.sy - pd->sy;
442 else
443 py = m->y - pd->dy;
444 pd->px = px;
445 pd->py = py;
446 pd->dx = m->x - pd->px;
447 pd->dy = m->y - pd->py;
448 pd->ppx = px;
449 pd->ppy = py;
450 server_redraw_client(c);
451 } else if (pd->dragging == SIZE) {
452 if (pd->border_lines == BOX_LINES_NONE) {
453 if (m->x < pd->px + 1)
454 return;
455 if (m->y < pd->py + 1)
456 return;
457 } else {
458 if (m->x < pd->px + 3)
459 return;
460 if (m->y < pd->py + 3)
461 return;
462 }
463 pd->sx = m->x - pd->px;
464 pd->sy = m->y - pd->py;
465 pd->psx = pd->sx;
466 pd->psy = pd->sy;
467
468 if (pd->border_lines == BOX_LINES_NONE) {
469 screen_resize(&pd->s, pd->sx, pd->sy, 0);
470 if (pd->job != NULL)
471 job_resize(pd->job, pd->sx, pd->sy);
472 } else {
473 screen_resize(&pd->s, pd->sx - 2, pd->sy - 2, 0);
474 if (pd->job != NULL)
475 job_resize(pd->job, pd->sx - 2, pd->sy - 2);
476 }
477 server_redraw_client(c);
478 }
479 }
480
481 static int
482 popup_key_cb(struct client *c, void *data, struct key_event *event)
483 {
484 struct popup_data *pd = data;
485 struct mouse_event *m = &event->m;
486 const char *buf;
487 size_t len;
488 u_int px, py, x;
489 enum { NONE, LEFT, RIGHT, TOP, BOTTOM } border = NONE;
490
491 if (pd->md != NULL) {
492 if (menu_key_cb(c, pd->md, event) == 1) {
493 pd->md = NULL;
494 pd->menu = NULL;
495 if (pd->close)
496 server_client_clear_overlay(c);
497 else
498 server_redraw_client(c);
499 }
500 return (0);
501 }
502
503 if (KEYC_IS_MOUSE(event->key)) {
504 if (pd->dragging != OFF) {
505 popup_handle_drag(c, pd, m);
506 goto out;
507 }
508 if (m->x < pd->px ||
509 m->x > pd->px + pd->sx - 1 ||
510 m->y < pd->py ||
511 m->y > pd->py + pd->sy - 1) {
512 if (MOUSE_BUTTONS(m->b) == MOUSE_BUTTON_3)
513 goto menu;
514 return (0);
515 }
516 if (pd->border_lines != BOX_LINES_NONE) {
517 if (m->x == pd->px)
518 border = LEFT;
519 else if (m->x == pd->px + pd->sx - 1)
520 border = RIGHT;
521 else if (m->y == pd->py)
522 border = TOP;
523 else if (m->y == pd->py + pd->sy - 1)
524 border = BOTTOM;
525 }
526 if ((m->b & MOUSE_MASK_MODIFIERS) == 0 &&
527 MOUSE_BUTTONS(m->b) == MOUSE_BUTTON_3 &&
528 (border == LEFT || border == TOP))
529 goto menu;
530 if (((m->b & MOUSE_MASK_MODIFIERS) == MOUSE_MASK_META) ||
531 border != NONE) {
532 if (!MOUSE_DRAG(m->b))
533 goto out;
534 if (MOUSE_BUTTONS(m->lb) == MOUSE_BUTTON_1)
535 pd->dragging = MOVE;
536 else if (MOUSE_BUTTONS(m->lb) == MOUSE_BUTTON_3)
537 pd->dragging = SIZE;
538 pd->dx = m->lx - pd->px;
539 pd->dy = m->ly - pd->py;
540 goto out;
541 }
542 }
543 if ((((pd->flags & (POPUP_CLOSEEXIT|POPUP_CLOSEEXITZERO)) == 0) ||
544 pd->job == NULL) &&
545 (event->key == '\033' || event->key == '\003'))
546 return (1);
547 if (pd->job != NULL) {
548 if (KEYC_IS_MOUSE(event->key)) {
549 /* Must be inside, checked already. */
550 if (pd->border_lines == BOX_LINES_NONE) {
551 px = m->x - pd->px;
552 py = m->y - pd->py;
553 } else {
554 px = m->x - pd->px - 1;
555 py = m->y - pd->py - 1;
556 }
557 if (!input_key_get_mouse(&pd->s, m, px, py, &buf, &len))
558 return (0);
559 bufferevent_write(job_get_event(pd->job), buf, len);
560 return (0);
561 }
562 input_key(&pd->s, job_get_event(pd->job), event->key);
563 }
564 return (0);
565
566 menu:
567 pd->menu = menu_create("");
568 if (pd->flags & POPUP_INTERNAL) {
569 menu_add_items(pd->menu, popup_internal_menu_items, NULL, c,
570 NULL);
571 } else
572 menu_add_items(pd->menu, popup_menu_items, NULL, c, NULL);
573 if (m->x >= (pd->menu->width + 4) / 2)
574 x = m->x - (pd->menu->width + 4) / 2;
575 else
576 x = 0;
577 pd->md = menu_prepare(pd->menu, 0, NULL, x, m->y, c, NULL,
578 popup_menu_done, pd);
579 c->flags |= CLIENT_REDRAWOVERLAY;
580
581 out:
582 pd->lx = m->x;
583 pd->ly = m->y;
584 pd->lb = m->b;
585 return (0);
586 }
587
588 static void
589 popup_job_update_cb(struct job *job)
590 {
591 struct popup_data *pd = job_get_data(job);
592 struct evbuffer *evb = job_get_event(job)->input;
593 struct client *c = pd->c;
594 struct screen *s = &pd->s;
595 void *data = EVBUFFER_DATA(evb);
596 size_t size = EVBUFFER_LENGTH(evb);
597
598 if (size == 0)
599 return;
600
601 if (pd->md != NULL) {
602 c->overlay_check = menu_check_cb;
603 c->overlay_data = pd->md;
604 } else {
605 c->overlay_check = NULL;
606 c->overlay_data = NULL;
607 }
608 input_parse_screen(pd->ictx, s, popup_init_ctx_cb, pd, data, size);
609 c->overlay_check = popup_check_cb;
610 c->overlay_data = pd;
611
612 evbuffer_drain(evb, size);
613 }
614
615 static void
616 popup_job_complete_cb(struct job *job)
617 {
618 struct popup_data *pd = job_get_data(job);
619 int status;
620
621 status = job_get_status(pd->job);
622 if (WIFEXITED(status))
623 pd->status = WEXITSTATUS(status);
624 else if (WIFSIGNALED(status))
625 pd->status = WTERMSIG(status);
626 else
627 pd->status = 0;
628 pd->job = NULL;
629
630 if ((pd->flags & POPUP_CLOSEEXIT) ||
631 ((pd->flags & POPUP_CLOSEEXITZERO) && pd->status == 0))
632 server_client_clear_overlay(pd->c);
633 }
634
635 int
636 popup_display(int flags, enum box_lines lines, struct cmdq_item *item, u_int px,
637 u_int py, u_int sx, u_int sy, struct environ *env, const char *shellcmd,
638 int argc, char **argv, const char *cwd, const char *title, struct client *c,
639 struct session *s, const char* style, const char* border_style,
640 popup_close_cb cb, void *arg)
641 {
642 struct popup_data *pd;
643 u_int jx, jy;
644 struct options *o;
645 struct style sytmp;
646
647 if (s != NULL)
648 o = s->curw->window->options;
649 else
650 o = c->session->curw->window->options;
651
652 if (lines == BOX_LINES_DEFAULT)
653 lines = options_get_number(o, "popup-border-lines");
654 if (lines == BOX_LINES_NONE) {
655 if (sx < 1 || sy < 1)
656 return (-1);
657 jx = sx;
658 jy = sy;
659 } else {
660 if (sx < 3 || sy < 3)
661 return (-1);
662 jx = sx - 2;
663 jy = sy - 2;
664 }
665 if (c->tty.sx < sx || c->tty.sy < sy)
666 return (-1);
667
668 pd = xcalloc(1, sizeof *pd);
669 pd->item = item;
670 pd->flags = flags;
671 if (title != NULL)
672 pd->title = xstrdup(title);
673
674 pd->c = c;
675 pd->c->references++;
676
677 pd->cb = cb;
678 pd->arg = arg;
679 pd->status = 128 + SIGHUP;
680
681 pd->border_lines = lines;
682 memcpy(&pd->border_cell, &grid_default_cell, sizeof pd->border_cell);
683 style_apply(&pd->border_cell, o, "popup-border-style", NULL);
684 if (border_style != NULL) {
685 style_set(&sytmp, &grid_default_cell);
686 if (style_parse(&sytmp, &pd->border_cell, border_style) == 0) {
687 pd->border_cell.fg = sytmp.gc.fg;
688 pd->border_cell.bg = sytmp.gc.bg;
689 }
690 }
691 pd->border_cell.attr = 0;
692
693 screen_init(&pd->s, jx, jy, 0);
694 colour_palette_init(&pd->palette);
695 colour_palette_from_option(&pd->palette, global_w_options);
696
697 memcpy(&pd->defaults, &grid_default_cell, sizeof pd->defaults);
698 style_apply(&pd->defaults, o, "popup-style", NULL);
699 if (style != NULL) {
700 style_set(&sytmp, &grid_default_cell);
701 if (style_parse(&sytmp, &pd->defaults, style) == 0) {
702 pd->defaults.fg = sytmp.gc.fg;
703 pd->defaults.bg = sytmp.gc.bg;
704 }
705 }
706 pd->defaults.attr = 0;
707
708 pd->px = px;
709 pd->py = py;
710 pd->sx = sx;
711 pd->sy = sy;
712
713 pd->ppx = px;
714 pd->ppy = py;
715 pd->psx = sx;
716 pd->psy = sy;
717
718 pd->job = job_run(shellcmd, argc, argv, env, s, cwd,
719 popup_job_update_cb, popup_job_complete_cb, NULL, pd,
720 JOB_NOWAIT|JOB_PTY|JOB_KEEPWRITE, jx, jy);
721 pd->ictx = input_init(NULL, job_get_event(pd->job), &pd->palette);
722
723 server_client_set_overlay(c, 0, popup_check_cb, popup_mode_cb,
724 popup_draw_cb, popup_key_cb, popup_free_cb, popup_resize_cb, pd);
725 return (0);
726 }
727
728 static void
729 popup_editor_free(struct popup_editor *pe)
730 {
731 unlink(pe->path);
732 free(pe->path);
733 free(pe);
734 }
735
736 static void
737 popup_editor_close_cb(int status, void *arg)
738 {
739 struct popup_editor *pe = arg;
740 FILE *f;
741 char *buf = NULL;
742 off_t len = 0;
743
744 if (status != 0) {
745 pe->cb(NULL, 0, pe->arg);
746 popup_editor_free(pe);
747 return;
748 }
749
750 f = fopen(pe->path, "r");
751 if (f != NULL) {
752 fseeko(f, 0, SEEK_END);
753 len = ftello(f);
754 fseeko(f, 0, SEEK_SET);
755
756 if (len == 0 ||
757 (uintmax_t)len > (uintmax_t)SIZE_MAX ||
758 (buf = malloc(len)) == NULL ||
759 fread(buf, len, 1, f) != 1) {
760 free(buf);
761 buf = NULL;
762 len = 0;
763 }
764 fclose(f);
765 }
766 pe->cb(buf, len, pe->arg); /* callback now owns buffer */
767 popup_editor_free(pe);
768 }
769
770 int
771 popup_editor(struct client *c, const char *buf, size_t len,
772 popup_finish_edit_cb cb, void *arg)
773 {
774 struct popup_editor *pe;
775 int fd;
776 FILE *f;
777 char *cmd;
778 char path[] = _PATH_TMP "tmux.XXXXXXXX";
779 const char *editor;
780 u_int px, py, sx, sy;
781
782 editor = options_get_string(global_options, "editor");
783 if (*editor == '\0')
784 return (-1);
785
786 fd = mkstemp(path);
787 if (fd == -1)
788 return (-1);
789 f = fdopen(fd, "w");
790 if (fwrite(buf, len, 1, f) != 1) {
791 fclose(f);
792 return (-1);
793 }
794 fclose(f);
795
796 pe = xcalloc(1, sizeof *pe);
797 pe->path = xstrdup(path);
798 pe->cb = cb;
799 pe->arg = arg;
800
801 sx = c->tty.sx * 9 / 10;
802 sy = c->tty.sy * 9 / 10;
803 px = (c->tty.sx / 2) - (sx / 2);
804 py = (c->tty.sy / 2) - (sy / 2);
805
806 xasprintf(&cmd, "%s %s", editor, path);
807 if (popup_display(POPUP_INTERNAL|POPUP_CLOSEEXIT, BOX_LINES_DEFAULT,
808 NULL, px, py, sx, sy, NULL, cmd, 0, NULL, _PATH_TMP, NULL, c, NULL,
809 NULL, NULL, popup_editor_close_cb, pe) != 0) {
810 popup_editor_free(pe);
811 free(cmd);
812 return (-1);
813 }
814 free(cmd);
815 return (0);
816 }
tmux -- terminal multiplexer similar to GNU Screen