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1.18 ! deraadt 1: /* $Id: engine.c,v 1.17 2013/12/02 02:33:41 krw Exp $ */
1.1 canacar 2: /*
3: * Copyright (c) 2001, 2007 Can Erkin Acar <canacar@openbsd.org>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17:
18:
1.10 chl 19: #include <sys/ioctl.h>
1.1 canacar 20: #include <sys/types.h>
21: #include <sys/queue.h>
22:
23: #include <ctype.h>
24: #include <curses.h>
25: #include <signal.h>
26: #include <stdlib.h>
27: #include <string.h>
1.8 canacar 28: #include <term.h>
1.1 canacar 29: #include <unistd.h>
1.12 lum 30: #include <err.h>
1.1 canacar 31:
1.8 canacar 32: /* XXX These are defined in term.h and conflict with our variable names */
33: #ifdef columns
34: #undef columns
35: #endif
36:
37: #ifdef lines
38: #undef lines
39: #endif
40:
1.1 canacar 41: #include "engine.h"
42:
1.18 ! deraadt 43: #define MINIMUM(a, b) (((a) < (b)) ? (a) : (b))
1.1 canacar 44:
45: /* circular linked list of views */
1.17 krw 46: TAILQ_HEAD(view_list, view_ent) view_head =
47: TAILQ_HEAD_INITIALIZER(view_head);
1.1 canacar 48: struct view_ent {
49: field_view *view;
1.17 krw 50: TAILQ_ENTRY(view_ent) entries;
1.1 canacar 51: };
52:
53: useconds_t udelay = 5000000;
54: int dispstart = 0;
55: int interactive = 1;
1.15 reyk 56: int averageonly = 0;
1.1 canacar 57: int maxprint = 0;
58: int paused = 0;
59: int rawmode = 0;
60: int rawwidth = DEFAULT_WIDTH;
61: int sortdir = 1;
62: int columns, lines;
63: u_int32_t num_disp = 0;
64: int max_disp = -1;
65:
66: volatile sig_atomic_t gotsig_close = 0;
67: volatile sig_atomic_t gotsig_resize = 0;
68: volatile sig_atomic_t gotsig_alarm = 0;
69: int need_update = 0;
70: int need_sort = 0;
1.14 mpf 71: int separate_thousands = 0;
1.1 canacar 72:
73: SCREEN *screen;
74:
75: field_view *curr_view = NULL;
76: struct view_ent *curr_view_ent = NULL;
77: struct view_manager *curr_mgr = NULL;
78:
79: int curr_line = 0;
80: int home_line = 0;
81:
82: /* line buffer for raw mode */
83: char linebuf[MAX_LINE_BUF];
84: int linepos = 0;
85:
86: /* temp storage for state printing */
87: char tmp_buf[MAX_LINE_BUF];
88:
89: char cmdbuf[MAX_LINE_BUF];
90: int cmd_len = -1;
91: struct command *curr_cmd = NULL;
92: char *curr_message = NULL;
93:
94: void print_cmdline(void);
95:
96:
97: /* screen output functions */
98:
99: char * tb_ptr = NULL;
100: int tb_len = 0;
101:
102: void
103: tb_start(void)
104: {
105: tb_ptr = tmp_buf;
106: tb_len = sizeof(tmp_buf);
107: tb_ptr[0] = '\0';
108: }
109:
110: void
111: tb_end(void)
112: {
113: tb_ptr = NULL;
114: tb_len = 0;
115: }
116:
117: int
118: tbprintf(char *format, ...)
119: GCC_PRINTFLIKE(1,2) /* defined in curses.h */
120: {
121: int len;
122: va_list arg;
123:
124: if (tb_ptr == NULL || tb_len <= 0)
125: return 0;
126:
127: va_start(arg, format);
128: len=vsnprintf(tb_ptr, tb_len, format, arg);
129: va_end(arg);
130:
131: if (len > tb_len)
132: tb_end();
133: else if (len > 0) {
134: tb_ptr += len;
135: tb_len -= len;
136: }
1.14 mpf 137:
138: return len;
139: }
140:
141: int
142: tbprintft(char *format, ...)
143: GCC_PRINTFLIKE(1,2) /* defined in curses.h */
144: {
145: int len;
146: va_list arg;
147: char buf[MAX_LINE_BUF];
148:
149: if (tb_ptr == NULL || tb_len <= 0)
150: return 0;
151:
152: va_start(arg, format);
153: len = vsnprintf(buf, tb_len, format, arg);
154: va_end(arg);
155:
156: if (len > tb_len)
157: tb_end();
158: else if (len > 0) {
159: int d, s;
160: int digits, curdigit;
161:
162: if (!separate_thousands) {
163: strlcpy(tb_ptr, buf, tb_len);
164: return len;
165: }
166:
167: /* count until we hit a non digit. (e.g. the prefix) */
168: for (digits = 0; digits < len; digits++)
1.16 deraadt 169: if (!isdigit((unsigned char)buf[digits]))
1.14 mpf 170: break;
171:
172: curdigit = digits;
173: d = s = 0;
174: /* insert thousands separators while copying */
175: while (curdigit && d < tb_len) {
176: if (curdigit < digits && curdigit % 3 == 0)
177: tb_ptr[d++] = ',';
178: tb_ptr[d++] = buf[s++];
179: curdigit--;
180: }
181: /* copy the remaining non-digits */
182: while (len > digits && d < tb_len) {
183: tb_ptr[d++] = buf[s++];
184: digits++;
185: }
186: tb_ptr[d] = '\0';
187: tb_ptr += d;
188: tb_len -= d;
189: len = d;
190: }
1.1 canacar 191: return len;
192: }
193:
194: void
195: move_horiz(int offset)
196: {
197: if (rawmode) {
198: if (offset <= 0)
199: linepos = 0;
200: else if (offset >= MAX_LINE_BUF)
201: linepos = MAX_LINE_BUF - 1;
202: else
203: linepos = offset;
204: } else {
205: move(curr_line, offset);
206: }
207: }
208:
209: void
210: print_str(int len, const char *str)
211: {
212: if (len <= 0)
213: return;
214:
215: if (rawmode) {
1.18 ! deraadt 216: int length = MINIMUM(len, MAX_LINE_BUF - linepos);
1.1 canacar 217: if (length <= 0)
218: return;
219: bcopy(str, &linebuf[linepos], length);
220: linepos += length;
221: } else
222: addnstr(str, len);
223: }
224:
225: void
226: clear_linebuf(void)
227: {
228: memset(linebuf, ' ', MAX_LINE_BUF);
229: }
230:
231: void
232: end_line(void)
233: {
234: if (rawmode) {
235: linebuf[rawwidth] = '\0';
236: printf("%s\n", linebuf);
237: clear_linebuf();
238: }
239: curr_line++;
240: }
241:
242: void
243: end_page(void)
244: {
245: if (rawmode) {
246: linepos = 0;
247: clear_linebuf();
248: } else {
249: move(home_line, 0);
250: print_cmdline();
251: refresh();
252: }
253: curr_line = 0;
254: }
255:
256: /* field output functions */
257:
258: void
259: print_fld_str(field_def *fld, const char *str)
260: {
1.7 canacar 261: int len, offset;
1.1 canacar 262: char *cpos;
263:
264: if (str == NULL || fld == NULL)
265: return;
266:
267: if (fld->start < 0)
268: return;
269:
270: len = strlen(str);
271:
272: if (len >= fld->width) {
273: move_horiz(fld->start);
274: print_str(fld->width, str);
275: } else {
276: switch (fld->align) {
277: case FLD_ALIGN_RIGHT:
278: move_horiz(fld->start + (fld->width - len));
279: break;
280: case FLD_ALIGN_CENTER:
281: move_horiz(fld->start + (fld->width - len) / 2);
282: break;
283: case FLD_ALIGN_COLUMN:
284: if ((cpos = strchr(str, ':')) == NULL) {
1.7 canacar 285: offset = (fld->width - len) / 2;
1.1 canacar 286: } else {
1.7 canacar 287: offset = (fld->width / 2) - (cpos - str);
288: if (offset < 0)
289: offset = 0;
290: else if (offset > (fld->width - len))
291: offset = fld->width - len;
1.1 canacar 292: }
1.7 canacar 293: move_horiz(fld->start + offset);
1.1 canacar 294: break;
295: default:
296: move_horiz(fld->start);
297: break;
298: }
299: print_str(len, str);
300: }
301: }
302:
303: void
304: print_bar_title(field_def *fld)
305: {
306: char buf[16];
1.7 canacar 307: int len, i, d, tr, tw, val, pos, cur;
1.1 canacar 308:
309: int divs[] = {20, 10, 5, 4, 3, 2, 1, 0};
310:
311: if (fld->width < 1)
312: return;
313:
314: len = snprintf(buf, sizeof(buf), " %d\\", fld->arg);
315: if (len >= sizeof(buf))
316: return;
317:
318: for (i = 0; divs[i]; i++)
319: if (divs[i] * len <= fld->width)
320: break;
321:
322: if (divs[i] == 0) {
323: print_fld_str(fld, "*****");
324: return;
325: }
326:
1.7 canacar 327: d = divs[i];
1.1 canacar 328:
329: val = 0;
330: pos = 0;
1.7 canacar 331: tr = fld->arg % d;
332: tw = fld->width % d;
1.1 canacar 333:
334: tb_start();
335: cur = 0;
1.7 canacar 336: for(i = 0; i < d; i++) {
1.1 canacar 337: tw += fld->width;
338: tr += fld->arg;
339:
1.7 canacar 340: while (tr >= d) {
1.1 canacar 341: val++;
1.7 canacar 342: tr -= d;
1.1 canacar 343: }
1.7 canacar 344: while (tw >= d) {
1.1 canacar 345: pos++;
1.7 canacar 346: tw -= d;
1.1 canacar 347: }
348:
349: len = snprintf(buf, sizeof(buf), "%d\\", val);
350: while (cur < pos - len) {
351: tbprintf(" ");
352: cur++;
353: }
354: tbprintf("%s", buf);
355: cur += len;
356: }
357:
358: print_fld_tb(fld);
359: }
360:
361: void
362: print_fld_bar(field_def *fld, int value)
363: {
364: int i, tw, val, cur;
365:
366: if (fld->width < 1)
367: return;
368:
369: val = 0;
370: tw = fld->arg / 2;
371:
372: tb_start();
373: cur = 0;
374: for(i = 0; i < fld->width; i++) {
375: tw += fld->arg;
376:
377: while (tw >= fld->width) {
378: val++;
379: tw -= fld->width;
380: }
381: if (val > value)
382: break;
383: tbprintf("#");
384: }
385:
386: print_fld_tb(fld);
387: }
388:
389: void
390: print_fld_tb(field_def *fld)
391: {
392: print_fld_str(fld, tmp_buf);
393: tb_end();
394: }
395:
396: void
397: print_title(void)
398: {
399: field_def **fp;
400:
401: if (curr_view != NULL && curr_view->view != NULL) {
402: for (fp = curr_view->view; *fp != NULL; fp++) {
403: switch((*fp)->align) {
404: case FLD_ALIGN_LEFT:
405: case FLD_ALIGN_RIGHT:
406: case FLD_ALIGN_CENTER:
407: case FLD_ALIGN_COLUMN:
408: print_fld_str(*fp, (*fp)->title);
409: break;
410: case FLD_ALIGN_BAR:
411: print_bar_title(*fp);
412: break;
413: }
414: }
415: }
416: end_line();
417: }
418:
419: /* view related functions */
420: void
421: hide_field(field_def *fld)
422: {
423: if (fld == NULL)
424: return;
425:
426: fld->flags |= FLD_FLAG_HIDDEN;
427: }
428:
429: void
430: show_field(field_def *fld)
431: {
432: if (fld == NULL)
433: return;
434:
435: fld->flags &= ~((unsigned int) FLD_FLAG_HIDDEN);
436: }
437:
438: void
439: reset_fields(void)
440: {
441: field_def **fp;
442: field_def *fld;
443:
444: if (curr_view == NULL)
445: return;
446:
447: if (curr_view->view == NULL)
448: return;
449:
450: for (fp = curr_view->view; *fp != NULL; fp++) {
451: fld = *fp;
452: fld->start = -1;
453: fld->width = fld->norm_width;
454: }
455: }
456:
457: void
458: field_setup(void)
459: {
460: field_def **fp;
461: field_def *fld;
462: int st, fwid, change;
463: int width = columns;
464:
465: reset_fields();
466:
467: dispstart = 0;
468: st = 0;
469:
470: for (fp = curr_view->view; *fp != NULL; fp++) {
471: fld = *fp;
472: if (fld->flags & FLD_FLAG_HIDDEN)
473: continue;
474:
475: if (width <= 1)
476: break;
477:
478: if (st != 1)
479: width--;
480:
481: fld->start = 1;
482: fwid = fld->width;
483: st++;
484: if (fwid >= width) {
485: fld->width = width;
486: width = 0;
487: } else
488: width -= fwid;
489: }
490:
491: change = 0;
492: while (width > 0) {
493: change = 0;
494: for (fp = curr_view->view; *fp != NULL; fp++) {
495: fld = *fp;
496: if (fld->flags & FLD_FLAG_HIDDEN)
497: continue;
498: if ((fld->width < fld->max_width) &&
499: (fld->increment <= width)) {
500: int w = fld->width + fld->increment;
501: if (w > fld->max_width)
502: w = fld->max_width;
503: width += fld->width - w;
504: fld->width = w;
505: change = 1;
506: }
507: if (width <= 0) break;
508: }
509: if (change == 0) break;
510: }
511:
512: st = 0;
513: for (fp = curr_view->view; *fp != NULL; fp++) {
514: fld = *fp;
515: if (fld->flags & FLD_FLAG_HIDDEN)
516: continue;
517: if (fld->start < 0) break;
518: fld->start = st;
519: st += fld->width + 1;
520: }
521: }
522:
523: void
524: set_curr_view(struct view_ent *ve)
525: {
526: field_view *v;
527:
528: reset_fields();
529:
530: if (ve == NULL) {
531: curr_view_ent = NULL;
532: curr_view = NULL;
533: curr_mgr = NULL;
534: return;
535: }
536:
537: v = ve->view;
538:
539: if ((curr_view != NULL) && (curr_mgr != v->mgr)) {
540: gotsig_alarm = 1;
541: if (v->mgr != NULL && v->mgr->select_fn != NULL)
542: v->mgr->select_fn();
543: }
544:
545: curr_view_ent = ve;
546: curr_view = v;
547: curr_mgr = v->mgr;
548: field_setup();
549: need_update = 1;
550: }
551:
552: void
553: add_view(field_view *fv)
554: {
555: struct view_ent *ent;
556:
557: if (fv == NULL)
558: return;
559:
560: if (fv->view == NULL || fv->name == NULL || fv->mgr == NULL)
561: return;
562:
563: ent = malloc(sizeof(struct view_ent));
564: if (ent == NULL)
565: return;
566:
567: ent->view = fv;
1.17 krw 568: TAILQ_INSERT_TAIL(&view_head, ent, entries);
1.1 canacar 569:
570: if (curr_view == NULL)
571: set_curr_view(ent);
572: }
573:
574: int
1.5 canacar 575: set_view(const char *opt)
1.1 canacar 576: {
577: struct view_ent *ve, *vm = NULL;
578: field_view *v;
579: int len;
580:
581: if (opt == NULL || (len = strlen(opt)) == 0)
582: return 1;
583:
1.17 krw 584: TAILQ_FOREACH(ve, &view_head, entries) {
1.1 canacar 585: v = ve->view;
586: if (strncasecmp(opt, v->name, len) == 0) {
587: if (vm)
588: return 1;
589: vm = ve;
590: }
591: }
592:
593: if (vm) {
594: set_curr_view(vm);
595: return 0;
596: }
597:
598: return 1;
599: }
600:
601: void
602: foreach_view(void (*callback)(field_view *))
603: {
604: struct view_ent *ve;
605:
1.17 krw 606: TAILQ_FOREACH(ve, &view_head, entries) {
1.1 canacar 607: callback(ve->view);
608: }
609: }
610:
611: int
612: set_view_hotkey(int ch)
613: {
614: struct view_ent *ve;
615: field_view *v;
616: int key = tolower(ch);
617:
1.17 krw 618: TAILQ_FOREACH(ve, &view_head, entries) {
1.1 canacar 619: v = ve->view;
620: if (key == v->hotkey) {
621: set_curr_view(ve);
622: return 1;
623: }
624: }
625:
626: return 0;
627: }
628:
629: void
630: next_view(void)
631: {
632: struct view_ent *ve;
633:
1.17 krw 634: if (TAILQ_EMPTY(&view_head) || curr_view_ent == NULL)
1.1 canacar 635: return;
636:
1.17 krw 637: ve = TAILQ_NEXT(curr_view_ent, entries);
638: if (ve == NULL)
639: ve = TAILQ_FIRST(&view_head);
1.1 canacar 640:
641: set_curr_view(ve);
642: }
643:
644: void
645: prev_view(void)
646: {
647: struct view_ent *ve;
648:
1.17 krw 649: if (TAILQ_EMPTY(&view_head) || curr_view_ent == NULL)
1.1 canacar 650: return;
651:
1.17 krw 652: ve = TAILQ_PREV(curr_view_ent, view_list, entries);
653: if (ve == NULL)
654: ve = TAILQ_LAST(&view_head, view_list);
1.1 canacar 655:
656: set_curr_view(ve);
657: }
658:
659: /* generic field printing */
660:
661: void
662: print_fld_age(field_def *fld, unsigned int age)
663: {
664: int len;
665: unsigned int h, m, s;
666:
667: if (fld == NULL)
668: return;
669: len = fld->width;
670:
671: if (len < 1)
672: return;
673:
674: s = age % 60;
675: m = age / 60;
676: h = m / 60;
677: m %= 60;
678:
679: tb_start();
680: if (tbprintf("%02u:%02u:%02u", h, m, s) <= len)
681: goto ok;
682:
1.3 canacar 683: tb_start();
1.1 canacar 684: if (tbprintf("%u", age) <= len)
685: goto ok;
686:
1.3 canacar 687: tb_start();
1.1 canacar 688: age /= 60;
689: if (tbprintf("%um", age) <= len)
690: goto ok;
691: if (age == 0)
692: goto err;
693:
1.3 canacar 694: tb_start();
1.1 canacar 695: age /= 60;
696: if (tbprintf("%uh", age) <= len)
697: goto ok;
698: if (age == 0)
699: goto err;
700:
1.3 canacar 701: tb_start();
1.1 canacar 702: age /= 24;
703: if (tbprintf("%ud", age) <= len)
704: goto ok;
705:
1.9 jasper 706: err:
1.1 canacar 707: print_fld_str(fld, "*");
708: tb_end();
709: return;
710:
1.9 jasper 711: ok:
1.1 canacar 712: print_fld_tb(fld);
713: }
714:
715: void
1.7 canacar 716: print_fld_sdiv(field_def *fld, u_int64_t size, int d)
1.1 canacar 717: {
718: int len;
719:
720: if (fld == NULL)
721: return;
722:
723: len = fld->width;
724: if (len < 1)
725: return;
726:
727: tb_start();
1.14 mpf 728: if (tbprintft("%llu", size) <= len)
1.1 canacar 729: goto ok;
730:
1.3 canacar 731: tb_start();
1.7 canacar 732: size /= d;
1.14 mpf 733: if (tbprintft("%lluK", size) <= len)
1.1 canacar 734: goto ok;
735: if (size == 0)
736: goto err;
737:
1.3 canacar 738: tb_start();
1.7 canacar 739: size /= d;
1.14 mpf 740: if (tbprintft("%lluM", size) <= len)
1.1 canacar 741: goto ok;
742: if (size == 0)
743: goto err;
744:
1.3 canacar 745: tb_start();
1.7 canacar 746: size /= d;
1.14 mpf 747: if (tbprintft("%lluG", size) <= len)
1.1 canacar 748: goto ok;
1.4 canacar 749: if (size == 0)
750: goto err;
751:
752: tb_start();
1.7 canacar 753: size /= d;
1.14 mpf 754: if (tbprintft("%lluT", size) <= len)
1.4 canacar 755: goto ok;
1.1 canacar 756:
757: err:
758: print_fld_str(fld, "*");
759: tb_end();
760: return;
761:
762: ok:
763: print_fld_tb(fld);
764: }
765:
766: void
767: print_fld_size(field_def *fld, u_int64_t size)
768: {
769: print_fld_sdiv(fld, size, 1024);
1.4 canacar 770: }
771:
772: void
1.7 canacar 773: print_fld_ssdiv(field_def *fld, int64_t size, int d)
1.4 canacar 774: {
775: int len;
776:
777: if (fld == NULL)
778: return;
779:
780: len = fld->width;
781: if (len < 1)
782: return;
783:
784: tb_start();
1.14 mpf 785: if (tbprintft("%lld", size) <= len)
1.4 canacar 786: goto ok;
787:
788: tb_start();
1.7 canacar 789: size /= d;
1.14 mpf 790: if (tbprintft("%lldK", size) <= len)
1.4 canacar 791: goto ok;
792: if (size == 0)
793: goto err;
794:
795: tb_start();
1.7 canacar 796: size /= d;
1.14 mpf 797: if (tbprintft("%lldM", size) <= len)
1.4 canacar 798: goto ok;
799: if (size == 0)
800: goto err;
801:
802: tb_start();
1.7 canacar 803: size /= d;
1.14 mpf 804: if (tbprintft("%lldG", size) <= len)
1.4 canacar 805: goto ok;
806: if (size == 0)
807: goto err;
808:
809: tb_start();
1.7 canacar 810: size /= d;
1.14 mpf 811: if (tbprintft("%lldT", size) <= len)
1.4 canacar 812: goto ok;
813:
814: err:
815: print_fld_str(fld, "*");
816: tb_end();
817: return;
818:
819: ok:
820: print_fld_tb(fld);
821: }
822:
823: void
824: print_fld_ssize(field_def *fld, int64_t size)
825: {
826: print_fld_ssdiv(fld, size, 1024);
1.1 canacar 827: }
828:
829: void
830: print_fld_rate(field_def *fld, double rate)
831: {
832: if (rate < 0) {
833: print_fld_str(fld, "*");
834: } else {
835: print_fld_size(fld, rate);
836: }
837: }
838:
839: void
840: print_fld_bw(field_def *fld, double bw)
841: {
842: if (bw < 0) {
843: print_fld_str(fld, "*");
844: } else {
845: print_fld_sdiv(fld, bw, 1000);
846: }
847: }
848:
849: void
850: print_fld_uint(field_def *fld, unsigned int size)
851: {
852: int len;
853:
854: if (fld == NULL)
855: return;
856:
857: len = fld->width;
858: if (len < 1)
859: return;
860:
861: tb_start();
1.14 mpf 862: if (tbprintft("%u", size) > len)
1.6 naddy 863: print_fld_str(fld, "*");
864: else
865: print_fld_tb(fld);
866: tb_end();
867: }
868:
869: void
870: print_fld_float(field_def *fld, double f, int prec)
871: {
872: int len;
873:
874: if (fld == NULL)
875: return;
876:
877: len = fld->width;
878: if (len < 1)
879: return;
880:
881: tb_start();
882: if (tbprintf("%*.*f", len, prec, f) > len)
1.1 canacar 883: print_fld_str(fld, "*");
884: else
885: print_fld_tb(fld);
886: tb_end();
887: }
888:
889:
890: /* ordering */
891:
892: void
1.5 canacar 893: set_order(const char *opt)
1.1 canacar 894: {
895: order_type *o;
896:
897: if (curr_view == NULL || curr_view->mgr == NULL)
898: return;
899:
900: curr_view->mgr->order_curr = curr_view->mgr->order_list;
901:
902: if (opt == NULL)
903: return;
904:
905: o = curr_view->mgr->order_list;
906:
907: if (o == NULL)
908: return;
909:
910: for (;o->name != NULL; o++) {
911: if (strcasecmp(opt, o->match) == 0) {
912: curr_view->mgr->order_curr = o;
913: return;
914: }
915: }
916: }
917:
918: int
919: set_order_hotkey(int ch)
920: {
921: order_type *o;
922: int key = ch;
923:
924: if (curr_view == NULL || curr_view->mgr == NULL)
925: return 0;
926:
927: o = curr_view->mgr->order_list;
928:
929: if (o == NULL)
930: return 0;
931:
932: for (;o->name != NULL; o++) {
933: if (key == o->hotkey) {
934: if (curr_view->mgr->order_curr == o) {
935: sortdir *= -1;
936: } else {
937: curr_view->mgr->order_curr = o;
938: }
939: return 1;
940: }
941: }
942:
943: return 0;
944: }
945:
946: void
947: next_order(void)
948: {
949: order_type *o, *oc;
1.2 canacar 950:
951: if (curr_view->mgr->order_list == NULL)
952: return;
1.1 canacar 953:
954: oc = curr_view->mgr->order_curr;
955:
956: for (o = curr_view->mgr->order_list; o->name != NULL; o++) {
957: if (oc == o) {
958: o++;
959: if (o->name == NULL)
960: break;
961: curr_view->mgr->order_curr = o;
962: return;
963: }
964: }
965:
966: curr_view->mgr->order_curr = curr_view->mgr->order_list;
967: }
968:
969:
970: /* main program functions */
971:
972: int
973: read_view(void)
974: {
975: if (curr_mgr == NULL)
976: return (0);
977:
978: if (paused)
979: return (0);
980:
981: if (curr_mgr->read_fn != NULL)
982: return (curr_mgr->read_fn());
983:
984: return (0);
985: }
986:
987:
988: int
989: disp_update(void)
990: {
1.7 canacar 991: int li;
1.1 canacar 992:
993: if (maxprint < 0)
994: dispstart = 0;
995: else if (dispstart + maxprint > num_disp)
996: dispstart = num_disp - maxprint;
997:
998: if (dispstart < 0)
999: dispstart = 0;
1000:
1001: if (curr_view == NULL)
1002: return 0;
1003:
1004: if (curr_mgr != NULL) {
1005: curr_line = 0;
1006:
1007: if (curr_mgr->header_fn != NULL) {
1.7 canacar 1008: li = curr_mgr->header_fn();
1009: if (li < 0)
1.1 canacar 1010: return (1);
1.7 canacar 1011: curr_line = ++li;
1012: home_line = li + maxprint + 1;
1.1 canacar 1013: }
1014:
1015: print_title();
1016:
1017: if (curr_mgr->print_fn != NULL)
1018: curr_mgr->print_fn();
1019: }
1020:
1021: return (0);
1022: }
1023:
1024: void
1025: sort_view(void)
1026: {
1027: if (curr_mgr != NULL)
1028: if (curr_mgr->sort_fn != NULL)
1029: curr_mgr->sort_fn();
1030: }
1031:
1032: void
1.7 canacar 1033: sig_close(int sig)
1.1 canacar 1034: {
1035: gotsig_close = 1;
1036: }
1037:
1038: void
1.7 canacar 1039: sig_resize(int sig)
1.1 canacar 1040: {
1041: gotsig_resize = 1;
1042: }
1043:
1044: void
1.7 canacar 1045: sig_alarm(int sig)
1.1 canacar 1046: {
1047: gotsig_alarm = 1;
1048: }
1049:
1050: void
1051: setup_term(int dmax)
1052: {
1053: max_disp = dmax;
1054: maxprint = dmax;
1055:
1056: if (rawmode) {
1057: columns = rawwidth;
1058: lines = DEFAULT_HEIGHT;
1059: clear_linebuf();
1060: } else {
1061: if (dmax < 0)
1062: dmax = 0;
1063:
1064: screen = newterm(NULL, stdout, stdin);
1065: if (screen == NULL) {
1066: rawmode = 1;
1067: interactive = 0;
1068: setup_term(dmax);
1069: return;
1070: }
1071: columns = COLS;
1072: lines = LINES;
1073:
1074: if (maxprint > lines - HEADER_LINES)
1075: maxprint = lines - HEADER_LINES;
1076:
1077: nonl();
1078: keypad(stdscr, TRUE);
1079: intrflush(stdscr, FALSE);
1080:
1081: halfdelay(10);
1082: noecho();
1083: }
1084:
1085: if (dmax == 0)
1086: maxprint = lines - HEADER_LINES;
1087:
1088: field_setup();
1089: }
1090:
1.8 canacar 1091: void
1.11 nicm 1092: do_resize_term(void)
1.8 canacar 1093: {
1094: struct winsize ws;
1095:
1096: if (rawmode)
1097: return;
1098:
1099: if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1)
1100: return;
1101:
1102: resizeterm(ws.ws_row, ws.ws_col);
1103:
1104: columns = COLS;
1105: lines = LINES;
1106:
1107: maxprint = max_disp;
1108:
1109: if (maxprint == 0 || maxprint > lines - HEADER_LINES)
1110: maxprint = lines - HEADER_LINES;
1111:
1112: clear();
1113:
1114: field_setup();
1115: }
1116:
1.1 canacar 1117: struct command *
1118: command_set(struct command *cmd, const char *init)
1119: {
1120: struct command *prev = curr_cmd;
1121:
1122: if (cmd) {
1123: if (init) {
1124: cmd_len = strlcpy(cmdbuf, init, sizeof(cmdbuf));
1125: if (cmd_len >= sizeof(cmdbuf)) {
1126: cmdbuf[0] = '\0';
1127: cmd_len = 0;
1128: }
1129: } else {
1130: cmd_len = 0;
1131: cmdbuf[0] = 0;
1132: }
1133: }
1134: curr_message = NULL;
1135: curr_cmd = cmd;
1136: need_update = 1;
1137: return prev;
1138: }
1139:
1140: const char *
1141: message_set(const char *msg) {
1142: char *prev = curr_message;
1143: if (msg)
1144: curr_message = strdup(msg);
1145: else
1146: curr_message = NULL;
1147: free(prev);
1148: return NULL;
1149: }
1150:
1151: void
1152: print_cmdline(void)
1153: {
1154: if (curr_cmd) {
1155: attron(A_STANDOUT);
1156: mvprintw(home_line, 0, "%s: ", curr_cmd->prompt);
1157: attroff(A_STANDOUT);
1158: printw("%s", cmdbuf);
1159: } else if (curr_message) {
1160: mvprintw(home_line, 0, "> %s", curr_message);
1161: }
1162: clrtoeol();
1163: }
1164:
1165:
1166: void
1167: cmd_keyboard(int ch)
1168: {
1169: if (curr_cmd == NULL)
1170: return;
1171:
1172: if (ch > 0 && isprint(ch)) {
1173: if (cmd_len < sizeof(cmdbuf) - 1) {
1174: cmdbuf[cmd_len++] = ch;
1175: cmdbuf[cmd_len] = 0;
1176: } else
1177: beep();
1178: }
1179:
1180: switch (ch) {
1181: case KEY_ENTER:
1182: case 0x0a:
1183: case 0x0d:
1184: {
1185: struct command * c = command_set(NULL, NULL);
1.5 canacar 1186: c->exec(cmdbuf);
1.1 canacar 1187: break;
1188: }
1189: case KEY_BACKSPACE:
1190: case KEY_DC:
1191: case CTRL_H:
1192: if (cmd_len > 0) {
1193: cmdbuf[--cmd_len] = 0;
1194: } else
1195: beep();
1196: break;
1197: case 0x1b:
1198: case CTRL_G:
1199: if (cmd_len > 0) {
1200: cmdbuf[0] = '\0';
1201: cmd_len = 0;
1202: } else
1203: command_set(NULL, NULL);
1204: break;
1205: default:
1206: break;
1207: }
1208: }
1209:
1210: void
1211: keyboard(void)
1212: {
1213: int ch;
1214:
1215: ch = getch();
1216:
1217: if (curr_cmd) {
1218: cmd_keyboard(ch);
1219: print_cmdline();
1220: return;
1221: }
1222:
1223: if (curr_mgr != NULL)
1224: if (curr_mgr->key_fn != NULL)
1225: if (curr_mgr->key_fn(ch))
1226: return;
1227:
1228: if (curr_message != NULL) {
1229: if (ch > 0) {
1230: curr_message = NULL;
1231: need_update = 1;
1232: }
1233: }
1234:
1235: switch (ch) {
1236: case ' ':
1237: gotsig_alarm = 1;
1238: break;
1239: case 'o':
1240: next_order();
1241: need_sort = 1;
1242: break;
1243: case 'p':
1244: paused = !paused;
1245: gotsig_alarm = 1;
1246: break;
1247: case 'q':
1248: gotsig_close = 1;
1249: break;
1250: case 'r':
1251: sortdir *= -1;
1252: need_sort = 1;
1253: break;
1254: case 'v':
1255: /* FALLTHROUGH */
1256: case KEY_RIGHT:
1257: /* FALLTHROUGH */
1258: case CTRL_F:
1259: next_view();
1260: break;
1261: case KEY_LEFT:
1262: /* FALLTHROUGH */
1263: case CTRL_B:
1264: prev_view();
1265: break;
1266: case KEY_DOWN:
1267: /* FALLTHROUGH */
1268: case CTRL_N:
1269: dispstart++;
1270: need_update = 1;
1271: break;
1272: case KEY_UP:
1273: /* FALLTHROUGH */
1274: case CTRL_P:
1275: dispstart--;
1276: need_update = 1;
1277: break;
1278: case KEY_NPAGE:
1279: /* FALLTHROUGH */
1280: case CTRL_V:
1281: dispstart += maxprint;
1282: need_update = 1;
1283: break;
1284: case KEY_PPAGE:
1285: /* FALLTHROUGH */
1286: case META_V:
1287: dispstart -= maxprint;
1288: need_update = 1;
1289: break;
1290: case KEY_HOME:
1291: /* FALLTHROUGH */
1292: case CTRL_A:
1293: dispstart = 0;
1294: need_update = 1;
1295: break;
1296: case KEY_END:
1297: /* FALLTHROUGH */
1298: case CTRL_E:
1299: dispstart = num_disp;
1300: need_update = 1;
1301: break;
1302: case CTRL_L:
1303: clear();
1304: need_update = 1;
1305: break;
1306: default:
1307: break;
1308: }
1309:
1310: if (set_order_hotkey(ch))
1311: need_sort = 1;
1312: else
1313: set_view_hotkey(ch);
1314: }
1315:
1316: void
1317: engine_initialize(void)
1318: {
1319: signal(SIGTERM, sig_close);
1320: signal(SIGINT, sig_close);
1321: signal(SIGQUIT, sig_close);
1322: signal(SIGWINCH, sig_resize);
1323: signal(SIGALRM, sig_alarm);
1324: }
1325:
1326: void
1327: engine_loop(int countmax)
1328: {
1329: int count = 0;
1330:
1331: for (;;) {
1332: if (gotsig_alarm) {
1333: read_view();
1334: need_sort = 1;
1335: gotsig_alarm = 0;
1336: ualarm(udelay, 0);
1337: }
1338:
1339: if (need_sort) {
1340: sort_view();
1341: need_sort = 0;
1342: need_update = 1;
1343:
1344: /* XXX if sort took too long */
1345: if (gotsig_alarm) {
1346: gotsig_alarm = 0;
1347: ualarm(udelay, 0);
1348: }
1349: }
1350:
1351: if (need_update) {
1352: erase();
1.15 reyk 1353: if (!averageonly ||
1354: (averageonly && count == countmax - 1))
1355: disp_update();
1.1 canacar 1356: end_page();
1357: need_update = 0;
1358: if (countmax && ++count >= countmax)
1359: break;
1360: }
1361:
1362: if (gotsig_close)
1363: break;
1364: if (gotsig_resize) {
1.11 nicm 1365: do_resize_term();
1.1 canacar 1366: gotsig_resize = 0;
1367: need_update = 1;
1368: }
1369:
1370: if (interactive && need_update == 0)
1371: keyboard();
1372: else if (interactive == 0)
1373: usleep(udelay);
1374: }
1375:
1376: if (rawmode == 0)
1377: endwin();
1.12 lum 1378: }
1379:
1380: int
1381: check_termcap(void)
1382: {
1383: char *term_name;
1384: int status;
1385: static struct termios screen_settings;
1386:
1387: if (!interactive)
1388: /* pretend we have a dumb terminal */
1389: return(1);
1390:
1391: /* get the terminal name */
1392: term_name = getenv("TERM");
1393: if (term_name == NULL)
1394: return(1);
1395:
1396: /* now get the termcap entry */
1397: if ((status = tgetent(NULL, term_name)) != 1) {
1398: if (status == -1)
1399: warnx("can't open termcap file");
1400: else
1401: warnx("no termcap entry for a `%s' terminal",
1402: term_name);
1403:
1404: /* pretend it's dumb and proceed */
1405: return(1);
1406: }
1407:
1408: /* "hardcopy" immediately indicates a very stupid terminal */
1409: if (tgetflag("hc"))
1410: return(1);
1411:
1412: /* get necessary capabilities */
1413: if (tgetstr("cl", NULL) == NULL || tgetstr("cm", NULL) == NULL)
1414: return(1);
1415:
1416: /* if stdout is not a terminal, pretend we are a dumb terminal */
1417: if (tcgetattr(STDOUT_FILENO, &screen_settings) == -1)
1418: return(1);
1419:
1420: return(0);
1.1 canacar 1421: }