screen.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2007 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
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <unistd.h>
  24
  25 #include "tmux.h"
  26
  27 /* Selected area in screen. */
  28 struct screen_sel {
  29         int              hidden;
  30         int              rectangle;
  31         int              modekeys;
  32
  33         u_int            sx;
  34         u_int            sy;
  35
  36         u_int            ex;
  37         u_int            ey;
  38
  39         struct grid_cell cell;
  40 };
  41
  42 /* Entry on title stack. */
  43 struct screen_title_entry {
  44         char                            *text;
  45
  46         TAILQ_ENTRY(screen_title_entry)  entry;
  47 };
  48 TAILQ_HEAD(screen_titles, screen_title_entry);
  49
  50 static void     screen_resize_y(struct screen *, u_int, int, u_int *);
  51 static void     screen_reflow(struct screen *, u_int, u_int *, u_int *, int);
  52
  53 /* Free titles stack. */
  54 static void
  55 screen_free_titles(struct screen *s)
  56 {
  57         struct screen_title_entry       *title_entry;
  58
  59         if (s->titles == NULL)
  60                 return;
  61
  62         while ((title_entry = TAILQ_FIRST(s->titles)) != NULL) {
  63                 TAILQ_REMOVE(s->titles, title_entry, entry);
  64                 free(title_entry->text);
  65                 free(title_entry);
  66         }
  67
  68         free(s->titles);
  69         s->titles = NULL;
  70 }
  71
  72 /* Create a new screen. */
  73 void
  74 screen_init(struct screen *s, u_int sx, u_int sy, u_int hlimit)
  75 {
  76         s->grid = grid_create(sx, sy, hlimit);
  77         s->saved_grid = NULL;
  78
  79         s->title = xstrdup("");
  80         s->titles = NULL;
  81         s->path = NULL;
  82
  83         s->cstyle = SCREEN_CURSOR_DEFAULT;
  84         s->default_cstyle = SCREEN_CURSOR_DEFAULT;
  85         s->default_mode = 0;
  86         s->ccolour = -1;
  87         s->default_ccolour = -1;
  88         s->tabs = NULL;
  89         s->sel = NULL;
  90
  91         s->write_list = NULL;
  92
  93         screen_reinit(s);
  94 }
  95
  96 /* Reinitialise screen. */
  97 void
  98 screen_reinit(struct screen *s)
  99 {
 100         s->cx = 0;
 101         s->cy = 0;
 102
 103         s->rupper = 0;
 104         s->rlower = screen_size_y(s) - 1;
 105
 106         s->mode = MODE_CURSOR|MODE_WRAP;
 107         if (options_get_number(global_options, "extended-keys") == 2)
 108                 s->mode |= MODE_KEXTENDED;
 109
 110         if (s->saved_grid != NULL)
 111                 screen_alternate_off(s, NULL, 0);
 112         s->saved_cx = UINT_MAX;
 113         s->saved_cy = UINT_MAX;
 114
 115         screen_reset_tabs(s);
 116
 117         grid_clear_lines(s->grid, s->grid->hsize, s->grid->sy, 8);
 118
 119         screen_clear_selection(s);
 120         screen_free_titles(s);
 121 }
 122
 123 /* Destroy a screen. */
 124 void
 125 screen_free(struct screen *s)
 126 {
 127         free(s->sel);
 128         free(s->tabs);
 129         free(s->path);
 130         free(s->title);
 131
 132         if (s->write_list != NULL)
 133                 screen_write_free_list(s);
 134
 135         if (s->saved_grid != NULL)
 136                 grid_destroy(s->saved_grid);
 137         grid_destroy(s->grid);
 138
 139         screen_free_titles(s);
 140 }
 141
 142 /* Reset tabs to default, eight spaces apart. */
 143 void
 144 screen_reset_tabs(struct screen *s)
 145 {
 146         u_int   i;
 147
 148         free(s->tabs);
 149
 150         if ((s->tabs = bit_alloc(screen_size_x(s))) == NULL)
 151                 fatal("bit_alloc failed");
 152         for (i = 8; i < screen_size_x(s); i += 8)
 153                 bit_set(s->tabs, i);
 154 }
 155
 156 /* Set screen cursor style and mode. */
 157 void
 158 screen_set_cursor_style(u_int style, enum screen_cursor_style *cstyle,
 159     int *mode)
 160 {
 161         switch (style) {
 162         case 0:
 163                 *cstyle = SCREEN_CURSOR_DEFAULT;
 164                 break;
 165         case 1:
 166                 *cstyle = SCREEN_CURSOR_BLOCK;
 167                 *mode |= MODE_CURSOR_BLINKING;
 168                 break;
 169         case 2:
 170                 *cstyle = SCREEN_CURSOR_BLOCK;
 171                 *mode &= ~MODE_CURSOR_BLINKING;
 172                 break;
 173         case 3:
 174                 *cstyle = SCREEN_CURSOR_UNDERLINE;
 175                 *mode |= MODE_CURSOR_BLINKING;
 176                 break;
 177         case 4:
 178                 *cstyle = SCREEN_CURSOR_UNDERLINE;
 179                 *mode &= ~MODE_CURSOR_BLINKING;
 180                 break;
 181         case 5:
 182                 *cstyle = SCREEN_CURSOR_BAR;
 183                 *mode |= MODE_CURSOR_BLINKING;
 184                 break;
 185         case 6:
 186                 *cstyle = SCREEN_CURSOR_BAR;
 187                 *mode &= ~MODE_CURSOR_BLINKING;
 188                 break;
 189         }
 190 }
 191
 192 /* Set screen cursor colour. */
 193 void
 194 screen_set_cursor_colour(struct screen *s, int colour)
 195 {
 196         s->ccolour = colour;
 197 }
 198
 199 /* Set screen title. */
 200 int
 201 screen_set_title(struct screen *s, const char *title)
 202 {
 203         if (!utf8_isvalid(title))
 204                 return (0);
 205         free(s->title);
 206         s->title = xstrdup(title);
 207         return (1);
 208 }
 209
 210 /* Set screen path. */
 211 void
 212 screen_set_path(struct screen *s, const char *path)
 213 {
 214         free(s->path);
 215         utf8_stravis(&s->path, path, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
 216 }
 217
 218 /* Push the current title onto the stack. */
 219 void
 220 screen_push_title(struct screen *s)
 221 {
 222         struct screen_title_entry *title_entry;
 223
 224         if (s->titles == NULL) {
 225                 s->titles = xmalloc(sizeof *s->titles);
 226                 TAILQ_INIT(s->titles);
 227         }
 228         title_entry = xmalloc(sizeof *title_entry);
 229         title_entry->text = xstrdup(s->title);
 230         TAILQ_INSERT_HEAD(s->titles, title_entry, entry);
 231 }
 232
 233 /*
 234  * Pop a title from the stack and set it as the screen title. If the stack is
 235  * empty, do nothing.
 236  */
 237 void
 238 screen_pop_title(struct screen *s)
 239 {
 240         struct screen_title_entry *title_entry;
 241
 242         if (s->titles == NULL)
 243                 return;
 244
 245         title_entry = TAILQ_FIRST(s->titles);
 246         if (title_entry != NULL) {
 247                 screen_set_title(s, title_entry->text);
 248
 249                 TAILQ_REMOVE(s->titles, title_entry, entry);
 250                 free(title_entry->text);
 251                 free(title_entry);
 252         }
 253 }
 254
 255 /* Resize screen with options. */
 256 void
 257 screen_resize_cursor(struct screen *s, u_int sx, u_int sy, int reflow,
 258     int eat_empty, int cursor)
 259 {
 260         u_int   cx = s->cx, cy = s->grid->hsize + s->cy;
 261
 262         if (s->write_list != NULL)
 263                 screen_write_free_list(s);
 264
 265         log_debug("%s: new size %ux%u, now %ux%u (cursor %u,%u = %u,%u)",
 266             __func__, sx, sy, screen_size_x(s), screen_size_y(s), s->cx, s->cy,
 267             cx, cy);
 268
 269         if (sx < 1)
 270                 sx = 1;
 271         if (sy < 1)
 272                 sy = 1;
 273
 274         if (sx != screen_size_x(s)) {
 275                 s->grid->sx = sx;
 276                 screen_reset_tabs(s);
 277         } else
 278                 reflow = 0;
 279
 280         if (sy != screen_size_y(s))
 281                 screen_resize_y(s, sy, eat_empty, &cy);
 282
 283         if (reflow)
 284                 screen_reflow(s, sx, &cx, &cy, cursor);
 285
 286         if (cy >= s->grid->hsize) {
 287                 s->cx = cx;
 288                 s->cy = cy - s->grid->hsize;
 289         } else {
 290                 s->cx = 0;
 291                 s->cy = 0;
 292         }
 293
 294         log_debug("%s: cursor finished at %u,%u = %u,%u", __func__, s->cx,
 295             s->cy, cx, cy);
 296
 297         if (s->write_list != NULL)
 298                 screen_write_make_list(s);
 299 }
 300
 301 /* Resize screen. */
 302 void
 303 screen_resize(struct screen *s, u_int sx, u_int sy, int reflow)
 304 {
 305         screen_resize_cursor(s, sx, sy, reflow, 1, 1);
 306 }
 307
 308 static void
 309 screen_resize_y(struct screen *s, u_int sy, int eat_empty, u_int *cy)
 310 {
 311         struct grid     *gd = s->grid;
 312         u_int            needed, available, oldy, i;
 313
 314         if (sy == 0)
 315                 fatalx("zero size");
 316         oldy = screen_size_y(s);
 317
 318         /*
 319          * When resizing:
 320          *
 321          * If the height is decreasing, delete lines from the bottom until
 322          * hitting the cursor, then push lines from the top into the history.
 323          *
 324          * When increasing, pull as many lines as possible from scrolled
 325          * history (not explicitly cleared from view) to the top, then fill the
 326          * remaining with blanks at the bottom.
 327          */
 328
 329         /* Size decreasing. */
 330         if (sy < oldy) {
 331                 needed = oldy - sy;
 332
 333                 /* Delete as many lines as possible from the bottom. */
 334                 if (eat_empty) {
 335                         available = oldy - 1 - s->cy;
 336                         if (available > 0) {
 337                                 if (available > needed)
 338                                         available = needed;
 339                                 grid_view_delete_lines(gd, oldy - available,
 340                                     available, 8);
 341                         }
 342                         needed -= available;
 343                 }
 344
 345                 /*
 346                  * Now just increase the history size, if possible, to take
 347                  * over the lines which are left. If history is off, delete
 348                  * lines from the top.
 349                  */
 350                 available = s->cy;
 351                 if (gd->flags & GRID_HISTORY) {
 352                         gd->hscrolled += needed;
 353                         gd->hsize += needed;
 354                 } else if (needed > 0 && available > 0) {
 355                         if (available > needed)
 356                                 available = needed;
 357                         grid_view_delete_lines(gd, 0, available, 8);
 358                         (*cy) -= available;
 359                 }
 360         }
 361
 362         /* Resize line array. */
 363         grid_adjust_lines(gd, gd->hsize + sy);
 364
 365         /* Size increasing. */
 366         if (sy > oldy) {
 367                 needed = sy - oldy;
 368
 369                 /*
 370                  * Try to pull as much as possible out of scrolled history, if
 371                  * is is enabled.
 372                  */
 373                 available = gd->hscrolled;
 374                 if (gd->flags & GRID_HISTORY && available > 0) {
 375                         if (available > needed)
 376                                 available = needed;
 377                         gd->hscrolled -= available;
 378                         gd->hsize -= available;
 379                 } else
 380                         available = 0;
 381                 needed -= available;
 382
 383                 /* Then fill the rest in with blanks. */
 384                 for (i = gd->hsize + sy - needed; i < gd->hsize + sy; i++)
 385                         grid_empty_line(gd, i, 8);
 386         }
 387
 388         /* Set the new size, and reset the scroll region. */
 389         gd->sy = sy;
 390         s->rupper = 0;
 391         s->rlower = screen_size_y(s) - 1;
 392 }
 393
 394 /* Set selection. */
 395 void
 396 screen_set_selection(struct screen *s, u_int sx, u_int sy,
 397     u_int ex, u_int ey, u_int rectangle, int modekeys, struct grid_cell *gc)
 398 {
 399         if (s->sel == NULL)
 400                 s->sel = xcalloc(1, sizeof *s->sel);
 401
 402         memcpy(&s->sel->cell, gc, sizeof s->sel->cell);
 403         s->sel->hidden = 0;
 404         s->sel->rectangle = rectangle;
 405         s->sel->modekeys = modekeys;
 406
 407         s->sel->sx = sx;
 408         s->sel->sy = sy;
 409         s->sel->ex = ex;
 410         s->sel->ey = ey;
 411 }
 412
 413 /* Clear selection. */
 414 void
 415 screen_clear_selection(struct screen *s)
 416 {
 417         free(s->sel);
 418         s->sel = NULL;
 419 }
 420
 421 /* Hide selection. */
 422 void
 423 screen_hide_selection(struct screen *s)
 424 {
 425         if (s->sel != NULL)
 426                 s->sel->hidden = 1;
 427 }
 428
 429 /* Check if cell in selection. */
 430 int
 431 screen_check_selection(struct screen *s, u_int px, u_int py)
 432 {
 433         struct screen_sel       *sel = s->sel;
 434         u_int                    xx;
 435
 436         if (sel == NULL || sel->hidden)
 437                 return (0);
 438
 439         if (sel->rectangle) {
 440                 if (sel->sy < sel->ey) {
 441                         /* start line < end line -- downward selection. */
 442                         if (py < sel->sy || py > sel->ey)
 443                                 return (0);
 444                 } else if (sel->sy > sel->ey) {
 445                         /* start line > end line -- upward selection. */
 446                         if (py > sel->sy || py < sel->ey)
 447                                 return (0);
 448                 } else {
 449                         /* starting line == ending line. */
 450                         if (py != sel->sy)
 451                                 return (0);
 452                 }
 453
 454                 /*
 455                  * Need to include the selection start row, but not the cursor
 456                  * row, which means the selection changes depending on which
 457                  * one is on the left.
 458                  */
 459                 if (sel->ex < sel->sx) {
 460                         /* Cursor (ex) is on the left. */
 461                         if (px < sel->ex)
 462                                 return (0);
 463
 464                         if (px > sel->sx)
 465                                 return (0);
 466                 } else {
 467                         /* Selection start (sx) is on the left. */
 468                         if (px < sel->sx)
 469                                 return (0);
 470
 471                         if (px > sel->ex)
 472                                 return (0);
 473                 }
 474         } else {
 475                 /*
 476                  * Like emacs, keep the top-left-most character, and drop the
 477                  * bottom-right-most, regardless of copy direction.
 478                  */
 479                 if (sel->sy < sel->ey) {
 480                         /* starting line < ending line -- downward selection. */
 481                         if (py < sel->sy || py > sel->ey)
 482                                 return (0);
 483
 484                         if (py == sel->sy && px < sel->sx)
 485                                 return (0);
 486
 487                         if (sel->modekeys == MODEKEY_EMACS)
 488                                 xx = (sel->ex == 0 ? 0 : sel->ex - 1);
 489                         else
 490                                 xx = sel->ex;
 491                         if (py == sel->ey && px > xx)
 492                                 return (0);
 493                 } else if (sel->sy > sel->ey) {
 494                         /* starting line > ending line -- upward selection. */
 495                         if (py > sel->sy || py < sel->ey)
 496                                 return (0);
 497
 498                         if (py == sel->ey && px < sel->ex)
 499                                 return (0);
 500
 501                         if (sel->modekeys == MODEKEY_EMACS)
 502                                 xx = sel->sx - 1;
 503                         else
 504                                 xx = sel->sx;
 505                         if (py == sel->sy && (sel->sx == 0 || px > xx))
 506                                 return (0);
 507                 } else {
 508                         /* starting line == ending line. */
 509                         if (py != sel->sy)
 510                                 return (0);
 511
 512                         if (sel->ex < sel->sx) {
 513                                 /* cursor (ex) is on the left */
 514                                 if (sel->modekeys == MODEKEY_EMACS)
 515                                         xx = sel->sx - 1;
 516                                 else
 517                                         xx = sel->sx;
 518                                 if (px > xx || px < sel->ex)
 519                                         return (0);
 520                         } else {
 521                                 /* selection start (sx) is on the left */
 522                                 if (sel->modekeys == MODEKEY_EMACS)
 523                                         xx = (sel->ex == 0 ? 0 : sel->ex - 1);
 524                                 else
 525                                         xx = sel->ex;
 526                                 if (px < sel->sx || px > xx)
 527                                         return (0);
 528                         }
 529                 }
 530         }
 531
 532         return (1);
 533 }
 534
 535 /* Get selected grid cell. */
 536 void
 537 screen_select_cell(struct screen *s, struct grid_cell *dst,
 538     const struct grid_cell *src)
 539 {
 540         if (s->sel == NULL || s->sel->hidden)
 541                 return;
 542
 543         memcpy(dst, &s->sel->cell, sizeof *dst);
 544
 545         utf8_copy(&dst->data, &src->data);
 546         dst->attr = dst->attr & ~GRID_ATTR_CHARSET;
 547         dst->attr |= src->attr & GRID_ATTR_CHARSET;
 548         dst->flags = src->flags;
 549 }
 550
 551 /* Reflow wrapped lines. */
 552 static void
 553 screen_reflow(struct screen *s, u_int new_x, u_int *cx, u_int *cy, int cursor)
 554 {
 555         u_int   wx, wy;
 556
 557         if (cursor) {
 558                 grid_wrap_position(s->grid, *cx, *cy, &wx, &wy);
 559                 log_debug("%s: cursor %u,%u is %u,%u", __func__, *cx, *cy, wx,
 560                     wy);
 561         }
 562
 563         grid_reflow(s->grid, new_x);
 564
 565         if (cursor) {
 566                 grid_unwrap_position(s->grid, cx, cy, wx, wy);
 567                 log_debug("%s: new cursor is %u,%u", __func__, *cx, *cy);
 568         }
 569         else {
 570                 *cx = 0;
 571                 *cy = s->grid->hsize;
 572         }
 573 }
 574
 575 /*
 576  * Enter alternative screen mode. A copy of the visible screen is saved and the
 577  * history is not updated.
 578  */
 579 void
 580 screen_alternate_on(struct screen *s, struct grid_cell *gc, int cursor)
 581 {
 582         u_int   sx, sy;
 583
 584         if (s->saved_grid != NULL)
 585                 return;
 586         sx = screen_size_x(s);
 587         sy = screen_size_y(s);
 588
 589         s->saved_grid = grid_create(sx, sy, 0);
 590         grid_duplicate_lines(s->saved_grid, 0, s->grid, screen_hsize(s), sy);
 591         if (cursor) {
 592                 s->saved_cx = s->cx;
 593                 s->saved_cy = s->cy;
 594         }
 595         memcpy(&s->saved_cell, gc, sizeof s->saved_cell);
 596
 597         grid_view_clear(s->grid, 0, 0, sx, sy, 8);
 598
 599         s->saved_flags = s->grid->flags;
 600         s->grid->flags &= ~GRID_HISTORY;
 601 }
 602
 603 /* Exit alternate screen mode and restore the copied grid. */
 604 void
 605 screen_alternate_off(struct screen *s, struct grid_cell *gc, int cursor)
 606 {
 607         u_int   sx = screen_size_x(s), sy = screen_size_y(s);
 608
 609         /*
 610          * If the current size is different, temporarily resize to the old size
 611          * before copying back.
 612          */
 613         if (s->saved_grid != NULL)
 614                 screen_resize(s, s->saved_grid->sx, s->saved_grid->sy, 1);
 615
 616         /*
 617          * Restore the cursor position and cell. This happens even if not
 618          * currently in the alternate screen.
 619          */
 620         if (cursor && s->saved_cx != UINT_MAX && s->saved_cy != UINT_MAX) {
 621                 s->cx = s->saved_cx;
 622                 s->cy = s->saved_cy;
 623                 if (gc != NULL)
 624                         memcpy(gc, &s->saved_cell, sizeof *gc);
 625         }
 626
 627         /* If not in the alternate screen, do nothing more. */
 628         if (s->saved_grid == NULL) {
 629                 if (s->cx > screen_size_x(s) - 1)
 630                         s->cx = screen_size_x(s) - 1;
 631                 if (s->cy > screen_size_y(s) - 1)
 632                         s->cy = screen_size_y(s) - 1;
 633                 return;
 634         }
 635
 636         /* Restore the saved grid. */
 637         grid_duplicate_lines(s->grid, screen_hsize(s), s->saved_grid, 0,
 638             s->saved_grid->sy);
 639
 640         /*
 641          * Turn history back on (so resize can use it) and then resize back to
 642          * the current size.
 643          */
 644         if (s->saved_flags & GRID_HISTORY)
 645                 s->grid->flags |= GRID_HISTORY;
 646         screen_resize(s, sx, sy, 1);
 647
 648         grid_destroy(s->saved_grid);
 649         s->saved_grid = NULL;
 650
 651         if (s->cx > screen_size_x(s) - 1)
 652                 s->cx = screen_size_x(s) - 1;
 653         if (s->cy > screen_size_y(s) - 1)
 654                 s->cy = screen_size_y(s) - 1;
 655 }
 656
 657 /* Get mode as a string. */
 658 const char *
 659 screen_mode_to_string(int mode)
 660 {
 661         static char     tmp[1024];
 662
 663         if (mode == 0)
 664                 return "NONE";
 665         if (mode == ALL_MODES)
 666                 return "ALL";
 667
 668         *tmp = '\0';
 669         if (mode & MODE_CURSOR)
 670                 strlcat(tmp, "CURSOR,", sizeof tmp);
 671         if (mode & MODE_INSERT)
 672                 strlcat(tmp, "INSERT,", sizeof tmp);
 673         if (mode & MODE_KCURSOR)
 674                 strlcat(tmp, "KCURSOR,", sizeof tmp);
 675         if (mode & MODE_KKEYPAD)
 676                 strlcat(tmp, "KKEYPAD,", sizeof tmp);
 677         if (mode & MODE_WRAP)
 678                 strlcat(tmp, "WRAP,", sizeof tmp);
 679         if (mode & MODE_MOUSE_STANDARD)
 680                 strlcat(tmp, "MOUSE_STANDARD,", sizeof tmp);
 681         if (mode & MODE_MOUSE_BUTTON)
 682                 strlcat(tmp, "MOUSE_BUTTON,", sizeof tmp);
 683         if (mode & MODE_CURSOR_BLINKING)
 684                 strlcat(tmp, "CURSOR_BLINKING,", sizeof tmp);
 685         if (mode & MODE_CURSOR_VERY_VISIBLE)
 686                 strlcat(tmp, "CURSOR_VERY_VISIBLE,", sizeof tmp);
 687         if (mode & MODE_MOUSE_UTF8)
 688                 strlcat(tmp, "UTF8,", sizeof tmp);
 689         if (mode & MODE_MOUSE_SGR)
 690                 strlcat(tmp, "SGR,", sizeof tmp);
 691         if (mode & MODE_BRACKETPASTE)
 692                 strlcat(tmp, "BRACKETPASTE,", sizeof tmp);
 693         if (mode & MODE_FOCUSON)
 694                 strlcat(tmp, "FOCUSON,", sizeof tmp);
 695         if (mode & MODE_MOUSE_ALL)
 696                 strlcat(tmp, "MOUSE_ALL,", sizeof tmp);
 697         if (mode & MODE_ORIGIN)
 698                 strlcat(tmp, "ORIGIN,", sizeof tmp);
 699         if (mode & MODE_CRLF)
 700                 strlcat(tmp, "CRLF,", sizeof tmp);
 701         if (mode & MODE_KEXTENDED)
 702                 strlcat(tmp, "KEXTENDED,", sizeof tmp);
 703         tmp[strlen(tmp) - 1] = '\0';
 704         return (tmp);
 705 }