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Trim can generate strings longer than the original if there are many #s,
[tmux.git] / popup.c
blob9ab8490f88962f403526e7b8395fad56e2e27724
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 screen_free(&s);
257 if (pd->md != NULL) {
258 c->overlay_check = NULL;
259 c->overlay_data = NULL;
260 menu_draw_cb(c, pd->md, rctx);
261 }
262 c->overlay_check = popup_check_cb;
263 c->overlay_data = pd;
264 }
265
266 static void
267 popup_free_cb(struct client *c, void *data)
268 {
269 struct popup_data *pd = data;
270 struct cmdq_item *item = pd->item;
271
272 if (pd->md != NULL)
273 menu_free_cb(c, pd->md);
274
275 if (pd->cb != NULL)
276 pd->cb(pd->status, pd->arg);
277
278 if (item != NULL) {
279 if (cmdq_get_client(item) != NULL &&
280 cmdq_get_client(item)->session == NULL)
281 cmdq_get_client(item)->retval = pd->status;
282 cmdq_continue(item);
283 }
284 server_client_unref(pd->c);
285
286 if (pd->job != NULL)
287 job_free(pd->job);
288 input_free(pd->ictx);
289
290 screen_free(&pd->s);
291 colour_palette_free(&pd->palette);
292
293 free(pd->title);
294 free(pd);
295 }
296
297 static void
298 popup_resize_cb(__unused struct client *c, void *data)
299 {
300 struct popup_data *pd = data;
301 struct tty *tty = &c->tty;
302
303 if (pd == NULL)
304 return;
305 if (pd->md != NULL)
306 menu_free_cb(c, pd->md);
307
308 /* Adjust position and size. */
309 if (pd->psy > tty->sy)
310 pd->sy = tty->sy;
311 else
312 pd->sy = pd->psy;
313 if (pd->psx > tty->sx)
314 pd->sx = tty->sx;
315 else
316 pd->sx = pd->psx;
317 if (pd->ppy + pd->sy > tty->sy)
318 pd->py = tty->sy - pd->sy;
319 else
320 pd->py = pd->ppy;
321 if (pd->ppx + pd->sx > tty->sx)
322 pd->px = tty->sx - pd->sx;
323 else
324 pd->px = pd->ppx;
325
326 /* Avoid zero size screens. */
327 if (pd->border_lines == BOX_LINES_NONE) {
328 screen_resize(&pd->s, pd->sx, pd->sy, 0);
329 if (pd->job != NULL)
330 job_resize(pd->job, pd->sx, pd->sy );
331 } else if (pd->sx > 2 && pd->sy > 2) {
332 screen_resize(&pd->s, pd->sx - 2, pd->sy - 2, 0);
333 if (pd->job != NULL)
334 job_resize(pd->job, pd->sx - 2, pd->sy - 2);
335 }
336 }
337
338 static void
339 popup_make_pane(struct popup_data *pd, enum layout_type type)
340 {
341 struct client *c = pd->c;
342 struct session *s = c->session;
343 struct window *w = s->curw->window;
344 struct layout_cell *lc;
345 struct window_pane *wp = w->active, *new_wp;
346 u_int hlimit;
347 const char *shell;
348
349 window_unzoom(w);
350
351 lc = layout_split_pane(wp, type, -1, 0);
352 hlimit = options_get_number(s->options, "history-limit");
353 new_wp = window_add_pane(wp->window, NULL, hlimit, 0);
354 layout_assign_pane(lc, new_wp, 0);
355
356 new_wp->fd = job_transfer(pd->job, &new_wp->pid, new_wp->tty,
357 sizeof new_wp->tty);
358 pd->job = NULL;
359
360 screen_set_title(&pd->s, new_wp->base.title);
361 screen_free(&new_wp->base);
362 memcpy(&new_wp->base, &pd->s, sizeof wp->base);
363 screen_resize(&new_wp->base, new_wp->sx, new_wp->sy, 1);
364 screen_init(&pd->s, 1, 1, 0);
365
366 shell = options_get_string(s->options, "default-shell");
367 if (!checkshell(shell))
368 shell = _PATH_BSHELL;
369 new_wp->shell = xstrdup(shell);
370
371 window_pane_set_event(new_wp);
372 window_set_active_pane(w, new_wp, 1);
373 new_wp->flags |= PANE_CHANGED;
374
375 pd->close = 1;
376 }
377
378 static void
379 popup_menu_done(__unused struct menu *menu, __unused u_int choice,
380 key_code key, void *data)
381 {
382 struct popup_data *pd = data;
383 struct client *c = pd->c;
384 struct paste_buffer *pb;
385 const char *buf;
386 size_t len;
387
388 pd->md = NULL;
389 pd->menu = NULL;
390 server_redraw_client(pd->c);
391
392 switch (key) {
393 case 'p':
394 pb = paste_get_top(NULL);
395 if (pb != NULL) {
396 buf = paste_buffer_data(pb, &len);
397 bufferevent_write(job_get_event(pd->job), buf, len);
398 }
399 break;
400 case 'F':
401 pd->sx = c->tty.sx;
402 pd->sy = c->tty.sy;
403 pd->px = 0;
404 pd->py = 0;
405 server_redraw_client(c);
406 break;
407 case 'C':
408 pd->px = c->tty.sx / 2 - pd->sx / 2;
409 pd->py = c->tty.sy / 2 - pd->sy / 2;
410 server_redraw_client(c);
411 break;
412 case 'h':
413 popup_make_pane(pd, LAYOUT_LEFTRIGHT);
414 break;
415 case 'v':
416 popup_make_pane(pd, LAYOUT_TOPBOTTOM);
417 break;
418 case 'q':
419 pd->close = 1;
420 break;
421 }
422 }
423
424 static void
425 popup_handle_drag(struct client *c, struct popup_data *pd,
426 struct mouse_event *m)
427 {
428 u_int px, py;
429
430 if (!MOUSE_DRAG(m->b))
431 pd->dragging = OFF;
432 else if (pd->dragging == MOVE) {
433 if (m->x < pd->dx)
434 px = 0;
435 else if (m->x - pd->dx + pd->sx > c->tty.sx)
436 px = c->tty.sx - pd->sx;
437 else
438 px = m->x - pd->dx;
439 if (m->y < pd->dy)
440 py = 0;
441 else if (m->y - pd->dy + pd->sy > c->tty.sy)
442 py = c->tty.sy - pd->sy;
443 else
444 py = m->y - pd->dy;
445 pd->px = px;
446 pd->py = py;
447 pd->dx = m->x - pd->px;
448 pd->dy = m->y - pd->py;
449 pd->ppx = px;
450 pd->ppy = py;
451 server_redraw_client(c);
452 } else if (pd->dragging == SIZE) {
453 if (pd->border_lines == BOX_LINES_NONE) {
454 if (m->x < pd->px + 1)
455 return;
456 if (m->y < pd->py + 1)
457 return;
458 } else {
459 if (m->x < pd->px + 3)
460 return;
461 if (m->y < pd->py + 3)
462 return;
463 }
464 pd->sx = m->x - pd->px;
465 pd->sy = m->y - pd->py;
466 pd->psx = pd->sx;
467 pd->psy = pd->sy;
468
469 if (pd->border_lines == BOX_LINES_NONE) {
470 screen_resize(&pd->s, pd->sx, pd->sy, 0);
471 if (pd->job != NULL)
472 job_resize(pd->job, pd->sx, pd->sy);
473 } else {
474 screen_resize(&pd->s, pd->sx - 2, pd->sy - 2, 0);
475 if (pd->job != NULL)
476 job_resize(pd->job, pd->sx - 2, pd->sy - 2);
477 }
478 server_redraw_client(c);
479 }
480 }
481
482 static int
483 popup_key_cb(struct client *c, void *data, struct key_event *event)
484 {
485 struct popup_data *pd = data;
486 struct mouse_event *m = &event->m;
487 const char *buf;
488 size_t len;
489 u_int px, py, x;
490 enum { NONE, LEFT, RIGHT, TOP, BOTTOM } border = NONE;
491
492 if (pd->md != NULL) {
493 if (menu_key_cb(c, pd->md, event) == 1) {
494 pd->md = NULL;
495 pd->menu = NULL;
496 if (pd->close)
497 server_client_clear_overlay(c);
498 else
499 server_redraw_client(c);
500 }
501 return (0);
502 }
503
504 if (KEYC_IS_MOUSE(event->key)) {
505 if (pd->dragging != OFF) {
506 popup_handle_drag(c, pd, m);
507 goto out;
508 }
509 if (m->x < pd->px ||
510 m->x > pd->px + pd->sx - 1 ||
511 m->y < pd->py ||
512 m->y > pd->py + pd->sy - 1) {
513 if (MOUSE_BUTTONS(m->b) == MOUSE_BUTTON_3)
514 goto menu;
515 return (0);
516 }
517 if (pd->border_lines != BOX_LINES_NONE) {
518 if (m->x == pd->px)
519 border = LEFT;
520 else if (m->x == pd->px + pd->sx - 1)
521 border = RIGHT;
522 else if (m->y == pd->py)
523 border = TOP;
524 else if (m->y == pd->py + pd->sy - 1)
525 border = BOTTOM;
526 }
527 if ((m->b & MOUSE_MASK_MODIFIERS) == 0 &&
528 MOUSE_BUTTONS(m->b) == MOUSE_BUTTON_3 &&
529 (border == LEFT || border == TOP))
530 goto menu;
531 if (((m->b & MOUSE_MASK_MODIFIERS) == MOUSE_MASK_META) ||
532 border != NONE) {
533 if (!MOUSE_DRAG(m->b))
534 goto out;
535 if (MOUSE_BUTTONS(m->lb) == MOUSE_BUTTON_1)
536 pd->dragging = MOVE;
537 else if (MOUSE_BUTTONS(m->lb) == MOUSE_BUTTON_3)
538 pd->dragging = SIZE;
539 pd->dx = m->lx - pd->px;
540 pd->dy = m->ly - pd->py;
541 goto out;
542 }
543 }
544 if ((((pd->flags & (POPUP_CLOSEEXIT|POPUP_CLOSEEXITZERO)) == 0) ||
545 pd->job == NULL) &&
546 (event->key == '\033' || event->key == '\003'))
547 return (1);
548 if (pd->job != NULL) {
549 if (KEYC_IS_MOUSE(event->key)) {
550 /* Must be inside, checked already. */
551 if (pd->border_lines == BOX_LINES_NONE) {
552 px = m->x - pd->px;
553 py = m->y - pd->py;
554 } else {
555 px = m->x - pd->px - 1;
556 py = m->y - pd->py - 1;
557 }
558 if (!input_key_get_mouse(&pd->s, m, px, py, &buf, &len))
559 return (0);
560 bufferevent_write(job_get_event(pd->job), buf, len);
561 return (0);
562 }
563 input_key(&pd->s, job_get_event(pd->job), event->key);
564 }
565 return (0);
566
567 menu:
568 pd->menu = menu_create("");
569 if (pd->flags & POPUP_INTERNAL) {
570 menu_add_items(pd->menu, popup_internal_menu_items, NULL, c,
571 NULL);
572 } else
573 menu_add_items(pd->menu, popup_menu_items, NULL, c, NULL);
574 if (m->x >= (pd->menu->width + 4) / 2)
575 x = m->x - (pd->menu->width + 4) / 2;
576 else
577 x = 0;
578 pd->md = menu_prepare(pd->menu, 0, 0, NULL, x, m->y, c, NULL,
579 popup_menu_done, pd);
580 c->flags |= CLIENT_REDRAWOVERLAY;
581
582 out:
583 pd->lx = m->x;
584 pd->ly = m->y;
585 pd->lb = m->b;
586 return (0);
587 }
588
589 static void
590 popup_job_update_cb(struct job *job)
591 {
592 struct popup_data *pd = job_get_data(job);
593 struct evbuffer *evb = job_get_event(job)->input;
594 struct client *c = pd->c;
595 struct screen *s = &pd->s;
596 void *data = EVBUFFER_DATA(evb);
597 size_t size = EVBUFFER_LENGTH(evb);
598
599 if (size == 0)
600 return;
601
602 if (pd->md != NULL) {
603 c->overlay_check = menu_check_cb;
604 c->overlay_data = pd->md;
605 } else {
606 c->overlay_check = NULL;
607 c->overlay_data = NULL;
608 }
609 input_parse_screen(pd->ictx, s, popup_init_ctx_cb, pd, data, size);
610 c->overlay_check = popup_check_cb;
611 c->overlay_data = pd;
612
613 evbuffer_drain(evb, size);
614 }
615
616 static void
617 popup_job_complete_cb(struct job *job)
618 {
619 struct popup_data *pd = job_get_data(job);
620 int status;
621
622 status = job_get_status(pd->job);
623 if (WIFEXITED(status))
624 pd->status = WEXITSTATUS(status);
625 else if (WIFSIGNALED(status))
626 pd->status = WTERMSIG(status);
627 else
628 pd->status = 0;
629 pd->job = NULL;
630
631 if ((pd->flags & POPUP_CLOSEEXIT) ||
632 ((pd->flags & POPUP_CLOSEEXITZERO) && pd->status == 0))
633 server_client_clear_overlay(pd->c);
634 }
635
636 int
637 popup_display(int flags, enum box_lines lines, struct cmdq_item *item, u_int px,
638 u_int py, u_int sx, u_int sy, struct environ *env, const char *shellcmd,
639 int argc, char **argv, const char *cwd, const char *title, struct client *c,
640 struct session *s, const char *style, const char *border_style,
641 popup_close_cb cb, void *arg)
642 {
643 struct popup_data *pd;
644 u_int jx, jy;
645 struct options *o;
646 struct style sytmp;
647
648 if (s != NULL)
649 o = s->curw->window->options;
650 else
651 o = c->session->curw->window->options;
652
653 if (lines == BOX_LINES_DEFAULT)
654 lines = options_get_number(o, "popup-border-lines");
655 if (lines == BOX_LINES_NONE) {
656 if (sx < 1 || sy < 1)
657 return (-1);
658 jx = sx;
659 jy = sy;
660 } else {
661 if (sx < 3 || sy < 3)
662 return (-1);
663 jx = sx - 2;
664 jy = sy - 2;
665 }
666 if (c->tty.sx < sx || c->tty.sy < sy)
667 return (-1);
668
669 pd = xcalloc(1, sizeof *pd);
670 pd->item = item;
671 pd->flags = flags;
672 if (title != NULL)
673 pd->title = xstrdup(title);
674
675 pd->c = c;
676 pd->c->references++;
677
678 pd->cb = cb;
679 pd->arg = arg;
680 pd->status = 128 + SIGHUP;
681
682 pd->border_lines = lines;
683 memcpy(&pd->border_cell, &grid_default_cell, sizeof pd->border_cell);
684 style_apply(&pd->border_cell, o, "popup-border-style", NULL);
685 if (border_style != NULL) {
686 style_set(&sytmp, &grid_default_cell);
687 if (style_parse(&sytmp, &pd->border_cell, border_style) == 0) {
688 pd->border_cell.fg = sytmp.gc.fg;
689 pd->border_cell.bg = sytmp.gc.bg;
690 }
691 }
692 pd->border_cell.attr = 0;
693
694 screen_init(&pd->s, jx, jy, 0);
695 colour_palette_init(&pd->palette);
696 colour_palette_from_option(&pd->palette, global_w_options);
697
698 memcpy(&pd->defaults, &grid_default_cell, sizeof pd->defaults);
699 style_apply(&pd->defaults, o, "popup-style", NULL);
700 if (style != NULL) {
701 style_set(&sytmp, &grid_default_cell);
702 if (style_parse(&sytmp, &pd->defaults, style) == 0) {
703 pd->defaults.fg = sytmp.gc.fg;
704 pd->defaults.bg = sytmp.gc.bg;
705 }
706 }
707 pd->defaults.attr = 0;
708
709 pd->px = px;
710 pd->py = py;
711 pd->sx = sx;
712 pd->sy = sy;
713
714 pd->ppx = px;
715 pd->ppy = py;
716 pd->psx = sx;
717 pd->psy = sy;
718
719 pd->job = job_run(shellcmd, argc, argv, env, s, cwd,
720 popup_job_update_cb, popup_job_complete_cb, NULL, pd,
721 JOB_NOWAIT|JOB_PTY|JOB_KEEPWRITE, jx, jy);
722 pd->ictx = input_init(NULL, job_get_event(pd->job), &pd->palette);
723
724 server_client_set_overlay(c, 0, popup_check_cb, popup_mode_cb,
725 popup_draw_cb, popup_key_cb, popup_free_cb, popup_resize_cb, pd);
726 return (0);
727 }
728
729 static void
730 popup_editor_free(struct popup_editor *pe)
731 {
732 unlink(pe->path);
733 free(pe->path);
734 free(pe);
735 }
736
737 static void
738 popup_editor_close_cb(int status, void *arg)
739 {
740 struct popup_editor *pe = arg;
741 FILE *f;
742 char *buf = NULL;
743 off_t len = 0;
744
745 if (status != 0) {
746 pe->cb(NULL, 0, pe->arg);
747 popup_editor_free(pe);
748 return;
749 }
750
751 f = fopen(pe->path, "r");
752 if (f != NULL) {
753 fseeko(f, 0, SEEK_END);
754 len = ftello(f);
755 fseeko(f, 0, SEEK_SET);
756
757 if (len == 0 ||
758 (uintmax_t)len > (uintmax_t)SIZE_MAX ||
759 (buf = malloc(len)) == NULL ||
760 fread(buf, len, 1, f) != 1) {
761 free(buf);
762 buf = NULL;
763 len = 0;
764 }
765 fclose(f);
766 }
767 pe->cb(buf, len, pe->arg); /* callback now owns buffer */
768 popup_editor_free(pe);
769 }
770
771 int
772 popup_editor(struct client *c, const char *buf, size_t len,
773 popup_finish_edit_cb cb, void *arg)
774 {
775 struct popup_editor *pe;
776 int fd;
777 FILE *f;
778 char *cmd;
779 char path[] = _PATH_TMP "tmux.XXXXXXXX";
780 const char *editor;
781 u_int px, py, sx, sy;
782
783 editor = options_get_string(global_options, "editor");
784 if (*editor == '\0')
785 return (-1);
786
787 fd = mkstemp(path);
788 if (fd == -1)
789 return (-1);
790 f = fdopen(fd, "w");
791 if (f == NULL)
792 return (-1);
793 if (fwrite(buf, len, 1, f) != 1) {
794 fclose(f);
795 return (-1);
796 }
797 fclose(f);
798
799 pe = xcalloc(1, sizeof *pe);
800 pe->path = xstrdup(path);
801 pe->cb = cb;
802 pe->arg = arg;
803
804 sx = c->tty.sx * 9 / 10;
805 sy = c->tty.sy * 9 / 10;
806 px = (c->tty.sx / 2) - (sx / 2);
807 py = (c->tty.sy / 2) - (sy / 2);
808
809 xasprintf(&cmd, "%s %s", editor, path);
810 if (popup_display(POPUP_INTERNAL|POPUP_CLOSEEXIT, BOX_LINES_DEFAULT,
811 NULL, px, py, sx, sy, NULL, cmd, 0, NULL, _PATH_TMP, NULL, c, NULL,
812 NULL, NULL, popup_editor_close_cb, pe) != 0) {
813 popup_editor_free(pe);
814 free(cmd);
815 return (-1);
816 }
817 free(cmd);
818 return (0);
819 }
tmux -- terminal multiplexer similar to GNU Screen