mdw@git.distorted.org.uk Git - dvdrip/blob - multiprogress.c

   1 #define _XOPEN_SOURCE
   2
   3 #include <limits.h>
   4 #include <stdarg.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <wchar.h>
   8
   9 #include <unistd.h>
  10 #include <termios.h>
  11 #include <sys/ioctl.h>
  12
  13 #if defined(USE_TERMINFO)
  14 #  include <curses.h>
  15 #  include <term.h>
  16 #elif defined(USE_TERMCAP)
  17 #  include <termcap.h>
  18 #endif
  19
  20 #include "multiprogress.h"
  21
  22 static FILE *dup_stream(int fd)
  23 {
  24   FILE *fp;
  25   int newfd;
  26
  27   newfd = dup(fd); if (newfd < 0) return (0);
  28   fp = fdopen(newfd, "r+"); if (!fp) return (0);
  29   return (fp);
  30 }
  31
  32 int progress_init(struct progress_state *progress)
  33 {
  34 #ifdef USE_TERMCAP
  35   char *term, *capcur;
  36 #endif
  37 #ifdef USE_TERMINFO
  38   int err;
  39 #endif
  40   struct progress_ttyinfo *tty;
  41   const char *t;
  42   int n;
  43
  44   tty = &progress->tty;
  45   tty->fp = 0;
  46   tty->termbuf = tty->capbuf = 0;
  47   tty->cap.f = 0;
  48   tty->cap.cr = tty->cap.up = tty->cap.ce = tty->cap.cd =
  49     tty->cap.mr = tty->cap.md = tty->cap.me =
  50     tty->cap.af = tty->cap.ab = tty->cap.op = 0;
  51
  52   progress->items = progress->end_item = 0;
  53   progress->nitems = 0; progress->last_lines = 0;
  54   progress->tv_update.tv_sec = 0; progress->tv_update.tv_usec = 0;
  55
  56   if (isatty(1)) tty->fp = dup_stream(1);
  57   else if (isatty(2)) tty->fp = dup_stream(2);
  58   else tty->fp = fopen("/dev/tty", "r+");
  59   if (!tty->fp) return (-1);
  60
  61 #define SETDIM(dim, var, getcap, dflt) do {                             \
  62   t = getenv(var); if (t) { n = atoi(t); if (n) { tty->dim = n; break; } } \
  63   n = getcap; if (n > 0) { tty->dim = n; break; }                       \
  64   tty->dim = dflt;                                                      \
  65 } while (0)
  66
  67 #if defined(USE_TERMINFO)
  68
  69   if (setupterm(0, fileno(tty->fp), &err) != OK || err < 1) return (-1);
  70
  71   tty->cap.cr = tigetstr("cr");
  72   tty->cap.nw = tigetstr("nel");
  73   tty->cap.up = tigetstr("cuu1");
  74   tty->cap.ce = tigetstr("el");
  75   tty->cap.cd = tigetstr("ed");
  76
  77   if (tigetnum("xmc") < 1) {
  78     tty->cap.mr = tigetstr("rev");
  79     tty->cap.md = tigetstr("bold");
  80     tty->cap.me = tigetstr("sgr0");
  81
  82     tty->cap.af = tigetstr("setaf");
  83     tty->cap.ab = tigetstr("setab");
  84     tty->cap.op = tigetstr("op");
  85   }
  86
  87   if (tigetflag("bce") > 0) tty->cap.f |= TCF_BCE;
  88
  89   SETDIM(defwd, "COLUMNS", tigetnum("co"), 80);
  90   SETDIM(defht, "LINES", tigetnum("li"), 25);
  91
  92 #elif defined(USE_TERMCAP)
  93
  94   term = getenv("TERM"); if (!term) return (-1);
  95   if (tgetent(tty->termbuf, term) < 1) return (-1);
  96
  97   tty->termbuf = malloc(4096); if (!tty->termbuf) return (-1);
  98   tty->capbuf = malloc(4096); if (!tty->capbuf) return (-1);
  99
 100   capcur = tty->capbuf;
 101   tty->cap.cr = tgetstr("cr", &capcur);
 102   tty->cap.nw = tgetstr("nw", &capcur);
 103   tty->cap.up = tgetstr("up", &capcur);
 104   tty->cap.ce = tgetstr("ce", &capcur);
 105   tty->cap.cd = tgetstr("cd", &capcur);
 106
 107   if (tgetnum("sg") < 1) {
 108     tty->cap.mr = tgetstr("mr", &capcur);
 109     tty->cap.md = tgetstr("md", &capcur);
 110     tty->cap.me = tgetstr("me", &capcur);
 111
 112     tty->cap.af = tgetstr("AF", &capcur);
 113     tty->cap.ab = tgetstr("AB", &capcur);
 114     tty->cap.op = tgetstr("op", &capcur);
 115   }
 116
 117   if (tgetflag("ut") > 0) tty->cap.f |= TCF_BCE;
 118
 119   t = tgetstr("pc", &capcur); PC = t ? *t : 0;
 120
 121   SETDIM(defwd, "COLUMNS", tgetnum("co"), 80);
 122   SETDIM(defht, "LINES", tgetnum("li"), 25);
 123
 124 #else
 125
 126   SETDIM(defwd, "COLUMNS", -1, 80);
 127   SETDIM(defht, "LINES", -1, 25);
 128
 129 #endif
 130
 131 #undef SETDIM
 132
 133   if (!tty->cap.cr) tty->cap.cr = "\r";
 134   if (!tty->cap.nw) tty->cap.nw = "\r\n";
 135   if (!tty->cap.up || !tty->cap.ce || !tty->cap.cd)
 136     { fclose(tty->fp); tty->fp = 0; return (-1); }
 137   if (!tty->cap.af || !tty->cap.ab || !tty->cap.op) tty->cap.op = 0;
 138   if (!tty->cap.me) tty->cap.mr = tty->cap.md = 0;
 139   return (0);
 140 }
 141
 142 void progress_free(struct progress_state *progress)
 143 {
 144   struct progress_ttyinfo *tty = &progress->tty;
 145
 146   if (tty->fp) { fclose(tty->fp); tty->fp = 0; }
 147   free(tty->termbuf); free(tty->capbuf); tty->termbuf = tty->capbuf = 0;
 148 }
 149
 150 #if defined(USE_TERMINFO)
 151 static const struct progress_ttyinfo *curtty = 0;
 152 static int putty(int ch) { return (putc(ch, curtty->fp)); }
 153 static void put_sequence(const struct progress_ttyinfo *tty,
 154                          const char *p, unsigned nlines)
 155   { if (p) { curtty = tty; tputs(p, nlines, putty); } }
 156 static void set_fgcolour(const struct progress_ttyinfo *tty, int colour)
 157   { put_sequence(tty, tgoto(tty->cap.af, -1, colour), 1); }
 158 static void set_bgcolour(const struct progress_ttyinfo *tty, int colour)
 159   { put_sequence(tty, tgoto(tty->cap.ab, -1, colour), 1); }
 160 #elif defined(USE_TERMCAP)
 161 static const struct progress_ttyinfo *curtty = 0;
 162 static int putty(int ch) { return (putc(ch, curtty->fp)); }
 163 static void put_sequence(const struct progress_ttyinfo *tty,
 164                          const char *p, unsigned nlines)
 165   { if (p) { curtty = tty; tputs(p, nlines, putty); } }
 166 static void set_fgcolour(const struct progress_ttyinfo *tty, int colour)
 167   { put_sequence(tty, tgoto(tty->cap.af, -1, colour), 1); }
 168 static void set_bgcolour(const struct progress_ttyinfo *tty, int colour)
 169   { put_sequence(tty, tgoto(tty->cap.ab, -1, colour), 1); }
 170 #else
 171 static void put_sequence(const struct progress_ttyinfo *tty,
 172                          const char *p, unsigned nlines) { ; }
 173 static void set_fgcolour(const struct progress_ttyinfo *tty, int colour)
 174   { ; }
 175 static void set_bgcolour(const struct progress_ttyinfo *tty, int colour)
 176   { ; }
 177 #endif
 178
 179 #define CLRF_ALL 1u
 180 static int clear_progress(struct progress_state *progress,
 181                           struct progress_render_state *render, unsigned f)
 182 {
 183   const struct progress_ttyinfo *tty = &progress->tty;
 184   unsigned ndel, nleave;
 185   unsigned i;
 186
 187   if (!tty->fp) return (-1);
 188
 189   put_sequence(tty, tty->cap.cr, 1);
 190   if (progress->last_lines) {
 191     if (f&CLRF_ALL)
 192       { ndel = progress->last_lines; nleave = 0; }
 193     else {
 194       if (progress->nitems >= progress->last_lines) ndel = 0;
 195       else ndel = progress->last_lines - progress->nitems;
 196       nleave = progress->last_lines - ndel;
 197     }
 198     if (!ndel)
 199       for (i = 0; i < nleave - 1; i++) put_sequence(tty, tty->cap.up, 1);
 200     else {
 201       for (i = 0; i < ndel - 1; i++) put_sequence(tty, tty->cap.up, 1);
 202       put_sequence(tty, tty->cap.cd, ndel);
 203       for (i = 0; i < nleave; i++) put_sequence(tty, tty->cap.up, 1);
 204     }
 205   }
 206   progress->last_lines = 0;
 207   if (ferror(tty->fp)) return (-1);
 208   return (0);
 209 }
 210
 211 static int grow_linebuf(struct progress_render_state *render, size_t want)
 212 {
 213   char *newbuf; size_t newsz;
 214
 215   if (want <= render->linesz) return (0);
 216   if (!render->linesz) newsz = 4*render->width + 1;
 217   else newsz = render->linesz;
 218   while (newsz < want) newsz *= 2;
 219   newbuf = malloc(newsz + 1); if (!newbuf) return (-1);
 220   newbuf[newsz] = 0;
 221   if (render->leftsz)
 222     memcpy(newbuf, render->linebuf, render->leftsz);
 223   if (render->rightsz)
 224     memcpy(newbuf + newsz - render->rightsz,
 225            render->linebuf + render->linesz - render->rightsz,
 226            render->rightsz);
 227   free(render->linebuf); render->linebuf = newbuf; render->linesz = newsz;
 228   return (0);
 229 }
 230
 231 static int grow_tempbuf(struct progress_render_state *render, size_t want)
 232 {
 233   char *newbuf; size_t newsz;
 234
 235   if (want <= render->tempsz) return (0);
 236   if (!render->tempsz) newsz = 4*render->width + 1;
 237   else newsz = render->tempsz;
 238   while (newsz < want) newsz *= 2;
 239   newbuf = malloc(newsz + 1); if (!newbuf) return (-1);
 240   newbuf[newsz] = 0;
 241   if (render->tempsz) memcpy(newbuf, render->tempbuf, render->tempsz);
 242   free(render->tempbuf); render->tempbuf = newbuf; render->tempsz = newsz;
 243   return (0);
 244 }
 245
 246 static int setup_render_state(struct progress_state *progress,
 247                               struct progress_render_state *render)
 248 {
 249   const struct progress_ttyinfo *tty = &progress->tty;
 250   struct winsize wsz;
 251   int rc = 0;
 252
 253   render->tty = tty;
 254   render->linebuf = 0; render->linesz = 0;
 255   render->tempbuf = 0; render->tempsz = 0;
 256
 257 #ifdef USE_TERMCAP
 258   render->old_bc = BC; BC = 0;
 259   render->old_up = UP; UP = 0;
 260 #endif
 261
 262   if (!ioctl(fileno(tty->fp), TIOCGWINSZ, &wsz))
 263     { render->width = wsz.ws_col; render->height = wsz.ws_row; }
 264   else
 265     { render->width = tty->defwd; render->height = tty->defht; rc = -1; }
 266
 267   if (render->width && !tty->cap.op && !tty->cap.mr) render->width--;
 268
 269   return (rc);
 270 }
 271
 272 static void free_render_state(struct progress_render_state *render)
 273 {
 274   fflush(render->tty->fp);
 275   free(render->linebuf); render->linebuf = 0; render->linesz = 0;
 276   free(render->tempbuf); render->tempbuf = 0; render->tempsz = 0;
 277 #ifdef USE_TERMCAP
 278   UP = render->old_up;
 279   BC = render->old_bc;
 280 #endif
 281 }
 282
 283 #define CONV_MORE ((size_t)-2)
 284 #define CONV_BAD ((size_t)-1)
 285
 286 struct measure {
 287   mbstate_t ps;
 288   const char *p; size_t i, sz;
 289   unsigned wd;
 290 };
 291
 292 static void init_measure(struct measure *m, const char *p, size_t sz)
 293 {
 294   m->p = p; m->sz = sz; m->i = 0; m->wd = 0;
 295   memset(&m->ps, 0, sizeof(m->ps));
 296 }
 297
 298 static int advance_measure(struct measure *m)
 299 {
 300   wchar_t wch;
 301   unsigned chwd;
 302   size_t n;
 303
 304   n = mbrtowc(&wch, m->p + m->i, m->sz - m->i, &m->ps);
 305   if (!n) { chwd = 0; n = m->sz - m->i; }
 306   else if (n == CONV_MORE) { chwd = 2; n = m->sz - m->i; }
 307   else if (n == CONV_BAD) { chwd = 2; n = 1; }
 308   else chwd = wcwidth(wch);
 309
 310   m->i += n; m->wd += chwd;
 311   return (m->i < m->sz);
 312 }
 313
 314 static unsigned string_width(const char *p, size_t sz)
 315 {
 316   struct measure m;
 317
 318   init_measure(&m, p, sz);
 319   while (advance_measure(&m));
 320   return (m.wd);
 321 }
 322
 323 static size_t split_string(const char *p, size_t sz,
 324                            unsigned *wd_out, unsigned maxwd)
 325 {
 326   struct measure m;
 327   size_t lasti; unsigned lastwd;
 328   int more;
 329
 330   init_measure(&m, p, sz);
 331   for (;;) {
 332     lasti = m.i; lastwd = m.wd;
 333     more = advance_measure(&m);
 334     if (m.wd > maxwd) { *wd_out = lastwd; return (lasti); }
 335     else if (!more) { *wd_out = m.wd; return (sz); }
 336   }
 337 }
 338
 339 enum { LEFT, RIGHT };
 340 static int putstr(struct progress_render_state *render, unsigned side,
 341                   const char *p, size_t n)
 342 {
 343   unsigned newwd = string_width(p, n);
 344   size_t want;
 345
 346   if (newwd >= render->width - render->leftwd - render->rightwd) return (-1);
 347   want = render->leftsz + render->rightsz + n;
 348   if (want > render->linesz && grow_linebuf(render, want)) return (-1);
 349   switch (side) {
 350     case LEFT:
 351       memcpy(render->linebuf + render->leftsz, p, n);
 352       render->leftsz += n; render->leftwd += newwd;
 353       break;
 354     case RIGHT:
 355       memcpy(render->linebuf + render->linesz - render->rightsz - n, p, n);
 356       render->rightsz += n; render->rightwd += newwd;
 357       break;
 358     default:
 359       return (-1);
 360   }
 361   return (0);
 362 }
 363
 364 static int vputf(struct progress_render_state *render, unsigned side,
 365                  const char *fmt, va_list ap)
 366 {
 367   va_list bp;
 368   int rc;
 369
 370   if (!render->tempsz && grow_tempbuf(render, 2*strlen(fmt))) return (-1);
 371   for (;;) {
 372     va_copy(bp, ap);
 373     rc = vsnprintf(render->tempbuf, render->tempsz, fmt, bp);
 374     va_end(bp);
 375     if (rc < 0) return (-1);
 376     if (rc <= render->tempsz) break;
 377     if (grow_tempbuf(render, 2*(rc + 1))) return (-1);
 378   }
 379   if (putstr(render, side, render->tempbuf, rc)) return (-1);
 380   return (0);
 381 }
 382
 383 int progress_vputleft(struct progress_render_state *render,
 384                       const char *fmt, va_list ap)
 385   { return (vputf(render, LEFT, fmt, ap)); }
 386
 387 int progress_vputright(struct progress_render_state *render,
 388                        const char *fmt, va_list ap)
 389   { return (vputf(render, RIGHT, fmt, ap)); }
 390
 391 int progress_putleft(struct progress_render_state *render,
 392                      const char *fmt, ...)
 393 {
 394   va_list ap;
 395   int rc;
 396
 397   va_start(ap, fmt); rc = vputf(render, LEFT, fmt, ap); va_end(ap);
 398   return (rc);
 399 }
 400
 401 int progress_putright(struct progress_render_state *render,
 402                       const char *fmt, ...)
 403 {
 404   va_list ap;
 405   int rc;
 406
 407   va_start(ap, fmt); rc = vputf(render, RIGHT, fmt, ap); va_end(ap);
 408   return (rc);
 409 }
 410
 411 enum {
 412   LEFT_COLOUR,
 413   LEFT_MONO,
 414   LEFT_SIMPLE,
 415   RIGHT_ANY,
 416   STOP
 417 };
 418
 419 struct bar_state {
 420   const struct progress_render_state *render;
 421   unsigned pos, nextpos, state;
 422 };
 423
 424 static void advance_bar_state(struct bar_state *bar)
 425 {
 426   const struct progress_render_state *render = bar->render;
 427   const struct progress_ttyinfo *tty = render->tty;
 428   size_t here = bar->nextpos;
 429
 430   while (bar->nextpos == here) {
 431     switch (bar->state) {
 432       case LEFT_COLOUR: set_bgcolour(tty, 3); goto right;
 433       case LEFT_MONO: put_sequence(tty, tty->cap.me, 1); goto right;
 434       case LEFT_SIMPLE: putc('|', tty->fp); goto right;
 435       right: bar->state = RIGHT_ANY; bar->nextpos = render->width; break;
 436       case RIGHT_ANY: bar->state = STOP; bar->nextpos = UINT_MAX; break;
 437     }
 438   }
 439 }
 440
 441 static void put_str(FILE *fp, const char *p, size_t sz)
 442   { while (sz--) putc(*p++, fp); }
 443 static void put_spc(FILE *fp, unsigned n)
 444   { while (n--) putc(' ', fp); }
 445
 446 static void put_barstr(struct bar_state *bar, const char *p, size_t sz)
 447 {
 448   unsigned wd;
 449   size_t n;
 450
 451   for (;;) {
 452     n = split_string(p, sz, &wd, bar->nextpos - bar->pos);
 453     if (n == sz && wd < bar->nextpos - bar->pos) break;
 454     put_str(bar->render->tty->fp, p, n); bar->pos += wd;
 455     advance_bar_state(bar);
 456     p += n; sz -= n;
 457   }
 458   put_str(bar->render->tty->fp, p, sz); bar->pos += wd;
 459 }
 460
 461 static void put_barspc(struct bar_state *bar, unsigned n)
 462 {
 463   unsigned step;
 464
 465   for (;;) {
 466     step = bar->nextpos - bar->pos;
 467     if (n < step) break;
 468     put_spc(bar->render->tty->fp, step); bar->pos += step;
 469     advance_bar_state(bar);
 470     n -= step;
 471   }
 472   put_spc(bar->render->tty->fp, n); bar->pos += n;
 473 }
 474
 475 int progress_showbar(struct progress_render_state *render, double frac)
 476 {
 477   const struct progress_ttyinfo *tty = render->tty;
 478   struct bar_state bar;
 479
 480   if (!tty->fp) return (-1);
 481
 482   bar.render = render; bar.pos = 0; bar.nextpos = frac*render->width + 0.5;
 483
 484   if (tty->cap.op) {
 485     set_fgcolour(tty, 0); bar.state = LEFT_COLOUR;
 486     if (bar.nextpos) set_bgcolour(tty, 2);
 487     else advance_bar_state(&bar);
 488   } else if (tty->cap.mr) {
 489     if (bar.nextpos)
 490       { bar.state = LEFT_MONO; put_sequence(tty, tty->cap.mr, 1); }
 491     else
 492       { bar.state = RIGHT; bar.nextpos = render->width; }
 493   } else
 494     bar.state = LEFT_SIMPLE;
 495
 496   put_barstr(&bar, render->linebuf, render->leftsz);
 497   put_barspc(&bar, render->width - render->leftwd - render->rightwd);
 498   put_barstr(&bar,
 499              render->linebuf + render->linesz - render->rightsz,
 500              render->rightsz);
 501
 502   put_sequence(tty, tty->cap.me, 1);
 503   put_sequence(tty, tty->cap.op, 1);
 504
 505   return (0);
 506 }
 507
 508 int progress_shownotice(struct progress_render_state *render, int bg, int fg)
 509 {
 510   const struct progress_ttyinfo *tty = render->tty;
 511
 512   if (!tty->fp) return (-1);
 513
 514   if (tty->cap.op) { set_fgcolour(tty, fg); set_bgcolour(tty, bg); }
 515   else if (tty->cap.mr) put_sequence(tty, tty->cap.mr, 1);
 516   if (tty->cap.md) put_sequence(tty, tty->cap.md, 1);
 517
 518   put_str(tty->fp, render->linebuf, render->leftsz);
 519   if (!render->rightsz && (tty->cap.f&TCF_BCE) && tty->cap.ce)
 520     put_sequence(tty, tty->cap.ce, 1);
 521   else {
 522     put_spc(tty->fp, render->width - render->leftwd - render->rightwd);
 523     put_str(tty->fp,
 524             render->linebuf + render->linesz - render->rightsz,
 525             render->rightsz);
 526   }
 527
 528   put_sequence(tty, tty->cap.me, 1);
 529   put_sequence(tty, tty->cap.op, 1);
 530
 531   return (0);
 532 }
 533
 534 int progress_additem(struct progress_state *progress,
 535                      struct progress_item *item)
 536 {
 537   if (item->parent) return (-1);
 538   item->prev = progress->end_item; item->next = 0;
 539   if (progress->end_item) progress->end_item->next = item;
 540   else progress->items = item;
 541   progress->end_item = item; item->parent = progress;
 542   progress->nitems++;
 543
 544   return (0);
 545 }
 546
 547 int progress_clear(struct progress_state *progress)
 548 {
 549   struct progress_render_state render;
 550
 551   if (!progress->tty.fp) return (-1);
 552   if (setup_render_state(progress, &render)) return (-1);
 553   clear_progress(progress, &render, CLRF_ALL);
 554   free_render_state(&render);
 555   return (0);
 556 }
 557
 558 int progress_update(struct progress_state *progress)
 559 {
 560   struct progress_render_state render;
 561   const struct progress_ttyinfo *tty = &progress->tty;
 562   struct progress_item *item;
 563   unsigned f = 0;
 564 #define f_any 1u
 565
 566   if (!progress->tty.fp) return (-1);
 567   if (setup_render_state(progress, &render)) return (-1);
 568   clear_progress(progress, &render, 0);
 569
 570   for (item = progress->items; item; item = item->next) {
 571     if (f&f_any) put_sequence(tty, tty->cap.nw, 1);
 572     render.leftsz = render.rightsz = 0;
 573     render.leftwd = render.rightwd = 0;
 574     item->render(item, &render); progress->last_lines++; f |= f_any;
 575     if (progress->last_lines > render.height) break;
 576   }
 577   if (f&f_any) put_sequence(tty, tty->cap.cr, 1);
 578   free_render_state(&render);
 579   return (0);
 580 }
 581
 582 int progress_removeitem(struct progress_state *progress,
 583                         struct progress_item *item)
 584 {
 585   if (!item->parent) return (-1);
 586   if (item->next) item->next->prev = item->prev;
 587   else (progress->end_item) = item->prev;
 588   if (item->prev) item->prev->next = item->next;
 589   else (progress->items) = item->next;
 590   progress->nitems--; item->parent = 0;
 591
 592   return (0);
 593 }