internals.c revision 1.21
1 /* $NetBSD: internals.c,v 1.21 2001/06/28 11:38:19 blymn Exp $ */ 2 3 /*- 4 * Copyright (c) 1998-1999 Brett Lymn 5 * (blymn (at) baea.com.au, brett_lymn (at) yahoo.com.au) 6 * All rights reserved. 7 * 8 * This code has been donated to The NetBSD Foundation by the Author. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * 30 */ 31 32 #include <limits.h> 33 #include <ctype.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <strings.h> 37 #include <assert.h> 38 #include "internals.h" 39 #include "form.h" 40 41 #ifdef DEBUG 42 /* 43 * file handle to write debug info to, this will be initialised when 44 * the form is first posted. 45 */ 46 FILE *dbg = NULL; 47 #endif 48 49 /* define our own min function - this is not generic but will do here 50 * (don't believe me? think about what value you would get 51 * from min(x++, y++) 52 */ 53 #define min(a,b) (((a) > (b))? (b) : (a)) 54 55 /* for the line joining function... */ 56 #define JOIN_NEXT 1 57 #define JOIN_NEXT_NW 2 /* next join, don't wrap the joined line */ 58 #define JOIN_PREV 3 59 #define JOIN_PREV_NW 4 /* previous join, don't wrap the joined line */ 60 61 /* for the bump_lines function... */ 62 #define _FORMI_USE_CURRENT -1 /* indicates current cursor pos to be used */ 63 64 static void 65 _formi_do_char_validation(FIELD *field, FIELDTYPE *type, char c, int *ret_val); 66 static void 67 _formi_do_validation(FIELD *field, FIELDTYPE *type, int *ret_val); 68 static int 69 _formi_join_line(FIELD *field, unsigned int pos, int direction); 70 void 71 _formi_hscroll_back(FIELD *field, unsigned int amt); 72 void 73 _formi_hscroll_fwd(FIELD *field, unsigned int amt); 74 static void 75 _formi_scroll_back(FIELD *field, unsigned int amt); 76 static void 77 _formi_scroll_fwd(FIELD *field, unsigned int amt); 78 static int 79 find_sow(char *str, unsigned int offset); 80 static int 81 find_cur_line(FIELD *cur, unsigned pos); 82 static int 83 split_line(FIELD *field, unsigned pos); 84 static void 85 bump_lines(FIELD *field, int pos, int amt, bool do_len); 86 static bool 87 check_dynamic_size(FIELD *field); 88 89 90 /* 91 * Open the debug file if it is not already open.... 92 */ 93 #ifdef DEBUG 94 int 95 _formi_create_dbg_file(void) 96 { 97 if (dbg == NULL) { 98 dbg = fopen("___form_dbg.out", "w"); 99 if (dbg == NULL) { 100 fprintf(stderr, "Cannot open debug file!\n"); 101 return E_SYSTEM_ERROR; 102 } 103 } 104 105 return E_OK; 106 } 107 #endif 108 109 /* 110 * Bump the lines array elements in the given field by the given amount. 111 * The row to start acting on can either be inferred from the given position 112 * or if the special value _FORMI_USE_CURRENT is set then the row will be 113 * the row the cursor is currently on. 114 */ 115 static void 116 bump_lines(FIELD *field, int pos, int amt, bool do_len) 117 { 118 int i, row; 119 #ifdef DEBUG 120 int dbg_ok = FALSE; 121 #endif 122 123 if (pos == _FORMI_USE_CURRENT) 124 row = field->start_line + field->cursor_ypos; 125 else 126 row = find_cur_line(field, (unsigned) pos); 127 128 #ifdef DEBUG 129 if (_formi_create_dbg_file() == E_OK) { 130 dbg_ok = TRUE; 131 fprintf(dbg, "bump_lines: bump starting at row %d\n", row); 132 fprintf(dbg, 133 "bump_lines: len from %d to %d, end from %d to %d\n", 134 field->lines[row].length, 135 field->lines[row].length + amt, 136 field->lines[row].end, field->lines[row].end + amt); 137 } 138 #endif 139 140 if (((int)field->lines[row].length + amt) < 0) { 141 field->lines[row].length = 0; 142 field->lines[row].end = 0; 143 } else { 144 if (do_len == TRUE) 145 field->lines[row].length += amt; 146 } 147 148 if (field->lines[row].length > 1) 149 field->lines[row].end += amt; 150 else 151 field->lines[row].end = field->lines[row].start; 152 153 for (i = row + 1; i < field->row_count; i++) { 154 #ifdef DEBUG 155 if (dbg_ok) { 156 fprintf(dbg, 157 "bump_lines: row %d: len from %d to %d, end from %d to %d\n", 158 i, field->lines[i].start, 159 field->lines[i].start + amt, 160 field->lines[i].end, 161 field->lines[i].end + amt); 162 } 163 fflush(dbg); 164 #endif 165 field->lines[i].start += amt; 166 field->lines[i].end += amt; 167 } 168 } 169 170 /* 171 * Check the sizing of the dynamic field, if the maximum size is set then 172 * check that the number of rows or columns does not exceed the set 173 * maximum. The decision to check the rows or columns is made on the basis 174 * of how many rows are in the field - one row means the max applies to 175 * the number of columns otherwise it applies to the number of rows. If 176 * the row/column count is less than the maximum then return TRUE. 177 * 178 */ 179 bool 180 check_dynamic_size(FIELD *field) 181 { 182 if (field->max == 0) /* unlimited */ 183 return TRUE; 184 185 if (field->rows == 1) { 186 if (field->buffers[0].length >= field->max) 187 return FALSE; 188 else 189 return TRUE; 190 } else { 191 if (field->row_count > field->max) 192 return FALSE; 193 else 194 return TRUE; 195 } 196 } 197 198 /* 199 * Set the form's current field to the first valid field on the page. 200 * Assume the fields have been sorted and stitched. 201 */ 202 int 203 _formi_pos_first_field(FORM *form) 204 { 205 FIELD *cur; 206 int old_page; 207 208 old_page = form->page; 209 210 /* scan forward for an active page....*/ 211 while (form->page_starts[form->page].in_use == 0) { 212 form->page++; 213 if (form->page > form->max_page) { 214 form->page = old_page; 215 return E_REQUEST_DENIED; 216 } 217 } 218 219 /* then scan for a field we can use */ 220 cur = form->fields[form->page_starts[form->page].first]; 221 while ((cur->opts & (O_VISIBLE | O_ACTIVE)) 222 != (O_VISIBLE | O_ACTIVE)) { 223 cur = CIRCLEQ_NEXT(cur, glue); 224 if (cur == (void *) &form->sorted_fields) { 225 form->page = old_page; 226 return E_REQUEST_DENIED; 227 } 228 } 229 230 form->cur_field = cur->index; 231 return E_OK; 232 } 233 234 /* 235 * Set the field to the next active and visible field, the fields are 236 * traversed in index order in the direction given. If the parameter 237 * use_sorted is TRUE then the sorted field list will be traversed instead 238 * of using the field index. 239 */ 240 int 241 _formi_pos_new_field(FORM *form, unsigned direction, unsigned use_sorted) 242 { 243 FIELD *cur; 244 int i; 245 246 i = form->cur_field; 247 cur = form->fields[i]; 248 249 do { 250 if (direction == _FORMI_FORWARD) { 251 if (use_sorted == TRUE) { 252 if ((form->wrap == FALSE) && 253 (cur == CIRCLEQ_LAST(&form->sorted_fields))) 254 return E_REQUEST_DENIED; 255 cur = CIRCLEQ_NEXT(cur, glue); 256 i = cur->index; 257 } else { 258 if ((form->wrap == FALSE) && 259 ((i + 1) >= form->field_count)) 260 return E_REQUEST_DENIED; 261 i++; 262 if (i >= form->field_count) 263 i = 0; 264 } 265 } else { 266 if (use_sorted == TRUE) { 267 if ((form->wrap == FALSE) && 268 (cur == CIRCLEQ_FIRST(&form->sorted_fields))) 269 return E_REQUEST_DENIED; 270 cur = CIRCLEQ_PREV(cur, glue); 271 i = cur->index; 272 } else { 273 if ((form->wrap == FALSE) && (i <= 0)) 274 return E_REQUEST_DENIED; 275 i--; 276 if (i < 0) 277 i = form->field_count - 1; 278 } 279 } 280 281 if ((form->fields[i]->opts & (O_VISIBLE | O_ACTIVE)) 282 == (O_VISIBLE | O_ACTIVE)) { 283 form->cur_field = i; 284 return E_OK; 285 } 286 } 287 while (i != form->cur_field); 288 289 return E_REQUEST_DENIED; 290 } 291 292 /* 293 * Find the line in a field that the cursor is currently on. 294 */ 295 static int 296 find_cur_line(FIELD *cur, unsigned pos) 297 { 298 unsigned row; 299 300 /* first check if pos is at the end of the string, if this 301 * is true then just return the last row since the pos may 302 * not have been added to the lines array yet. 303 */ 304 if (pos == (cur->buffers[0].length - 1)) 305 return (cur->row_count - 1); 306 307 for (row = 0; row < cur->row_count; row++) { 308 if ((pos >= cur->lines[row].start) 309 && (pos <= cur->lines[row].end)) 310 return row; 311 } 312 313 #ifdef DEBUG 314 /* barf if we get here, this should not be possible */ 315 assert((row != row)); 316 #endif 317 return 0; 318 } 319 320 321 /* 322 * Word wrap the contents of the field's buffer 0 if this is allowed. 323 * If the wrap is successful, that is, the row count nor the buffer 324 * size is exceeded then the function will return E_OK, otherwise it 325 * will return E_REQUEST_DENIED. 326 */ 327 int 328 _formi_wrap_field(FIELD *field, unsigned int loc) 329 { 330 char *str; 331 int width, row, start_row; 332 unsigned int pos; 333 334 str = field->buffers[0].string; 335 336 /* Don't bother if the field string is too short. */ 337 if (field->buffers[0].length < field->cols) 338 return E_OK; 339 340 if ((field->opts & O_STATIC) == O_STATIC) { 341 if ((field->rows + field->nrows) == 1) { 342 return E_OK; /* cannot wrap a single line */ 343 } 344 width = field->cols; 345 } else { 346 /* if we are limited to one line then don't try to wrap */ 347 if ((field->drows + field->nrows) == 1) { 348 return E_OK; 349 } 350 351 /* 352 * hueristic - if a dynamic field has more than one line 353 * on the screen then the field grows rows, otherwise 354 * it grows columns, effectively a single line field. 355 * This is documented AT&T behaviour. 356 */ 357 if (field->rows > 1) { 358 width = field->cols; 359 } else { 360 return E_OK; 361 } 362 } 363 364 start_row = find_cur_line(field, loc); 365 366 /* if we are not at the top of the field then back up one 367 * row because we may be able to merge the current row into 368 * the one above. 369 */ 370 if (start_row > 0) 371 start_row--; 372 373 for (row = start_row; row < field->row_count; row++) { 374 AGAIN: 375 pos = field->lines[row].end; 376 if (field->lines[row].length < width) { 377 /* line may be too short, try joining some lines */ 378 379 if ((((int) field->row_count) - 1) == row) { 380 /* if this is the last row then don't 381 * wrap 382 */ 383 continue; 384 } 385 386 if (_formi_join_line(field, (unsigned int) pos, 387 JOIN_NEXT_NW) == E_OK) { 388 goto AGAIN; 389 } else 390 break; 391 } else { 392 /* line is too long, split it - maybe */ 393 394 /* first check if we have not run out of room */ 395 if ((field->opts & O_STATIC) == O_STATIC) { 396 /* check static field */ 397 if ((field->rows + field->nrows - 1) == row) 398 return E_REQUEST_DENIED; 399 } else { 400 /* check dynamic field */ 401 if ((field->max != 0) 402 && ((field->max - 1) == row)) 403 return E_REQUEST_DENIED; 404 } 405 406 /* split on first whitespace before current word */ 407 pos = width + field->lines[row].start - 1; 408 if (pos >= field->buffers[0].length) 409 pos = field->buffers[0].length - 1; 410 411 if ((!isblank(str[pos])) && 412 ((field->opts & O_WRAP) == O_WRAP)) { 413 if (!isblank(str[pos - 1])) 414 pos = find_sow(str, 415 (unsigned int) pos); 416 /* 417 * If we cannot split the line then return 418 * NO_ROOM so the driver can tell that it 419 * should not autoskip (if that is enabled) 420 */ 421 if ((pos == 0) || (!isblank(str[pos - 1])) 422 || ((pos <= field->lines[row].start) 423 && (field->buffers[0].length 424 >= (width - 1 425 + field->lines[row].start)))) { 426 return E_NO_ROOM; 427 } 428 } 429 430 /* if we are at the end of the string and it has 431 * a trailing blank, don't wrap the blank. 432 */ 433 if ((pos == field->buffers[0].length - 1) && 434 (isblank(str[pos]))) 435 continue; 436 437 /* 438 * otherwise, if we are still sitting on a 439 * blank but not at the end of the line 440 * move forward one char so the blank 441 * is on the line boundary. 442 */ 443 if (isblank(str[pos])) 444 pos++; 445 446 if (split_line(field, pos) != E_OK) { 447 return E_REQUEST_DENIED; 448 } 449 } 450 } 451 452 return E_OK; 453 } 454 455 /* 456 * Join the two lines that surround the location pos, the type 457 * variable indicates the direction of the join, JOIN_NEXT will join 458 * the next line to the current line, JOIN_PREV will join the current 459 * line to the previous line, the new lines will be wrapped unless the 460 * _NW versions of the directions are used. Returns E_OK if the join 461 * was successful or E_REQUEST_DENIED if the join cannot happen. 462 */ 463 static int 464 _formi_join_line(FIELD *field, unsigned int pos, int direction) 465 { 466 unsigned int row, i; 467 int old_alloced, old_row_count; 468 struct _formi_field_lines *saved; 469 #ifdef DEBUG 470 int dbg_ok = FALSE; 471 472 if (_formi_create_dbg_file() == E_OK) { 473 dbg_ok = TRUE; 474 } 475 #endif 476 477 if ((saved = (struct _formi_field_lines *) 478 malloc(field->lines_alloced * sizeof(struct _formi_field_lines))) 479 == NULL) 480 return E_REQUEST_DENIED; 481 482 bcopy(field->lines, saved, 483 field->row_count * sizeof(struct _formi_field_lines)); 484 old_alloced = field->lines_alloced; 485 old_row_count = field->row_count; 486 487 row = find_cur_line(field, pos); 488 489 #ifdef DEBUG 490 if (dbg_ok == TRUE) { 491 fprintf(dbg, "join_line: working on row %d, row_count = %d\n", 492 row, field->row_count); 493 } 494 #endif 495 496 if ((direction == JOIN_NEXT) || (direction == JOIN_NEXT_NW)) { 497 /* see if there is another line following... */ 498 if (row == (field->row_count - 1)) { 499 free(saved); 500 return E_REQUEST_DENIED; 501 } 502 503 #ifdef DEBUG 504 if (dbg_ok == TRUE) { 505 fprintf(dbg, 506 "join_line: join_next before end = %d, length = %d", 507 field->lines[row].end, 508 field->lines[row].length); 509 fprintf(dbg, 510 " :: next row end = %d, length = %d\n", 511 field->lines[row + 1].end, 512 field->lines[row + 1].length); 513 } 514 #endif 515 516 field->lines[row].end = field->lines[row + 1].end; 517 field->lines[row].length += field->lines[row + 1].length; 518 /* shift all the remaining lines up.... */ 519 for (i = row + 2; i < field->row_count; i++) 520 field->lines[i - 1] = field->lines[i]; 521 } else { 522 if ((pos == 0) || (row == 0)) { 523 free(saved); 524 return E_REQUEST_DENIED; 525 } 526 527 #ifdef DEBUG 528 if (dbg_ok == TRUE) { 529 fprintf(dbg, 530 "join_line: join_prev before end = %d, length = %d", 531 field->lines[row].end, 532 field->lines[row].length); 533 fprintf(dbg, 534 " :: prev row end = %d, length = %d\n", 535 field->lines[row - 1].end, 536 field->lines[row - 1].length); 537 } 538 #endif 539 540 field->lines[row - 1].end = field->lines[row].end; 541 field->lines[row - 1].length += field->lines[row].length; 542 /* shift all the remaining lines up */ 543 for (i = row + 1; i < field->row_count; i++) 544 field->lines[i - 1] = field->lines[i]; 545 } 546 547 #ifdef DEBUG 548 if (dbg_ok == TRUE) { 549 fprintf(dbg, 550 "join_line: exit end = %d, length = %d\n", 551 field->lines[row].end, field->lines[row].length); 552 } 553 #endif 554 555 field->row_count--; 556 557 /* wrap the field if required, if this fails undo the change */ 558 if ((direction == JOIN_NEXT) || (direction == JOIN_PREV)) { 559 if (_formi_wrap_field(field, (unsigned int) pos) != E_OK) { 560 free(field->lines); 561 field->lines = saved; 562 field->lines_alloced = old_alloced; 563 field->row_count = old_row_count; 564 return E_REQUEST_DENIED; 565 } 566 } 567 568 free(saved); 569 return E_OK; 570 } 571 572 /* 573 * Split the line at the given position, if possible 574 */ 575 static int 576 split_line(FIELD *field, unsigned pos) 577 { 578 struct _formi_field_lines *new_lines; 579 unsigned int row, i; 580 #ifdef DEBUG 581 short dbg_ok = FALSE; 582 #endif 583 584 if (pos == 0) 585 return E_REQUEST_DENIED; 586 587 #ifdef DEBUG 588 if (_formi_create_dbg_file() == E_OK) { 589 fprintf(dbg, "split_line: splitting line at %d\n", pos); 590 dbg_ok = TRUE; 591 } 592 #endif 593 594 if ((field->row_count + 1) > field->lines_alloced) { 595 if ((new_lines = (struct _formi_field_lines *) 596 realloc(field->lines, (field->row_count + 1) 597 * sizeof(struct _formi_field_lines))) == NULL) 598 return E_SYSTEM_ERROR; 599 field->lines = new_lines; 600 field->lines_alloced++; 601 } 602 603 row = find_cur_line(field, pos); 604 #ifdef DEBUG 605 if (dbg_ok == TRUE) { 606 fprintf(dbg, 607 "split_line: enter: lines[%d].end = %d, lines[%d].length = %d\n", 608 row, field->lines[row].end, row, 609 field->lines[row].length); 610 } 611 612 assert(((field->lines[row].end < INT_MAX) && 613 (field->lines[row].length < INT_MAX) && 614 (field->lines[row].length > 0))); 615 616 #endif 617 618 /* if asked to split right where the line already starts then 619 * just return - nothing to do. 620 */ 621 if (field->lines[row].start == pos) 622 return E_OK; 623 624 for (i = field->row_count - 1; i > row; i--) { 625 field->lines[i + 1] = field->lines[i]; 626 } 627 628 field->lines[row + 1].end = field->lines[row].end; 629 field->lines[row].end = pos - 1; 630 field->lines[row].length = pos - field->lines[row].start; 631 field->lines[row + 1].start = pos; 632 field->lines[row + 1].length = field->lines[row + 1].end 633 - field->lines[row + 1].start + 1; 634 635 #ifdef DEBUG 636 assert(((field->lines[row + 1].end < INT_MAX) && 637 (field->lines[row].end < INT_MAX) && 638 (field->lines[row].length < INT_MAX) && 639 (field->lines[row + 1].start < INT_MAX) && 640 (field->lines[row + 1].length < INT_MAX) && 641 (field->lines[row].length > 0) && 642 (field->lines[row + 1].length > 0))); 643 644 if (dbg_ok == TRUE) { 645 fprintf(dbg, 646 "split_line: exit: lines[%d].end = %d, lines[%d].length = %d, ", 647 row, field->lines[row].end, row, 648 field->lines[row].length); 649 fprintf(dbg, "lines[%d].start = %d, lines[%d].end = %d, ", 650 row + 1, field->lines[row + 1].start, row + 1, 651 field->lines[row + 1].end); 652 fprintf(dbg, "lines[%d].length = %d, row_count = %d\n", 653 row + 1, field->lines[row + 1].length, 654 field->row_count + 1); 655 } 656 #endif 657 658 field->row_count++; 659 660 #ifdef DEBUG 661 if (dbg_ok == TRUE) { 662 bump_lines(field, 0, 0, FALSE); /* will report line data for us */ 663 } 664 #endif 665 666 return E_OK; 667 } 668 669 /* 670 * skip the blanks in the given string, start at the index start and 671 * continue forward until either the end of the string or a non-blank 672 * character is found. Return the index of either the end of the string or 673 * the first non-blank character. 674 */ 675 unsigned 676 _formi_skip_blanks(char *string, unsigned int start) 677 { 678 unsigned int i; 679 680 i = start; 681 682 while ((string[i] != '\0') && isblank(string[i])) 683 i++; 684 685 return i; 686 } 687 688 /* 689 * Return the index of the top left most field of the two given fields. 690 */ 691 static int 692 _formi_top_left(FORM *form, int a, int b) 693 { 694 /* lower row numbers always win here.... */ 695 if (form->fields[a]->form_row < form->fields[b]->form_row) 696 return a; 697 698 if (form->fields[a]->form_row > form->fields[b]->form_row) 699 return b; 700 701 /* rows must be equal, check columns */ 702 if (form->fields[a]->form_col < form->fields[b]->form_col) 703 return a; 704 705 if (form->fields[a]->form_col > form->fields[b]->form_col) 706 return b; 707 708 /* if we get here fields must be in exactly the same place, punt */ 709 return a; 710 } 711 712 /* 713 * Return the index to the field that is the bottom-right-most of the 714 * two given fields. 715 */ 716 static int 717 _formi_bottom_right(FORM *form, int a, int b) 718 { 719 /* check the rows first, biggest row wins */ 720 if (form->fields[a]->form_row > form->fields[b]->form_row) 721 return a; 722 if (form->fields[a]->form_row < form->fields[b]->form_row) 723 return b; 724 725 /* rows must be equal, check cols, biggest wins */ 726 if (form->fields[a]->form_col > form->fields[b]->form_col) 727 return a; 728 if (form->fields[a]->form_col < form->fields[b]->form_col) 729 return b; 730 731 /* fields in the same place, punt */ 732 return a; 733 } 734 735 /* 736 * Find the end of the current word in the string str, starting at 737 * offset - the end includes any trailing whitespace. If the end of 738 * the string is found before a new word then just return the offset 739 * to the end of the string. 740 */ 741 static int 742 find_eow(char *str, unsigned int offset) 743 { 744 int start; 745 746 start = offset; 747 /* first skip any non-whitespace */ 748 while ((str[start] != '\0') && !isblank(str[start])) 749 start++; 750 751 /* see if we hit the end of the string */ 752 if (str[start] == '\0') 753 return start; 754 755 /* otherwise skip the whitespace.... */ 756 while ((str[start] != '\0') && isblank(str[start])) 757 start++; 758 759 return start; 760 } 761 762 /* 763 * Find the beginning of the current word in the string str, starting 764 * at offset. 765 */ 766 static int 767 find_sow(char *str, unsigned int offset) 768 { 769 int start; 770 771 start = offset; 772 773 if (start > 0) { 774 if (isblank(str[start]) || isblank(str[start - 1])) { 775 if (isblank(str[start - 1])) 776 start--; 777 /* skip the whitespace.... */ 778 while ((start >= 0) && isblank(str[start])) 779 start--; 780 } 781 } 782 783 /* see if we hit the start of the string */ 784 if (start < 0) 785 return 0; 786 787 /* now skip any non-whitespace */ 788 while ((start >= 0) && !isblank(str[start])) 789 start--; 790 791 if (start > 0) 792 start++; /* last loop has us pointing at a space, adjust */ 793 794 if (start < 0) 795 start = 0; 796 797 return start; 798 } 799 800 /* 801 * Scroll the field forward the given number of lines. 802 */ 803 static void 804 _formi_scroll_fwd(FIELD *field, unsigned int amt) 805 { 806 /* check if we have lines to scroll */ 807 if (field->row_count < (field->start_line + field->rows)) 808 return; 809 810 field->start_line += min(amt, 811 field->row_count - field->start_line 812 - field->rows); 813 } 814 815 /* 816 * Scroll the field backward the given number of lines. 817 */ 818 static void 819 _formi_scroll_back(FIELD *field, unsigned int amt) 820 { 821 if (field->start_line == 0) 822 return; 823 824 field->start_line -= min(field->start_line, amt); 825 } 826 827 /* 828 * Scroll the field forward the given number of characters. 829 */ 830 void 831 _formi_hscroll_fwd(FIELD *field, int unsigned amt) 832 { 833 field->start_char += min(amt, 834 field->lines[field->start_line + field->cursor_ypos].end); 835 } 836 837 /* 838 * Scroll the field backward the given number of characters. 839 */ 840 void 841 _formi_hscroll_back(FIELD *field, unsigned int amt) 842 { 843 field->start_char -= min(field->start_char, amt); 844 } 845 846 /* 847 * Find the different pages in the form fields and assign the form 848 * page_starts array with the information to find them. 849 */ 850 int 851 _formi_find_pages(FORM *form) 852 { 853 int i, cur_page = 0; 854 855 if ((form->page_starts = (_FORMI_PAGE_START *) 856 malloc((form->max_page + 1) * sizeof(_FORMI_PAGE_START))) == NULL) 857 return E_SYSTEM_ERROR; 858 859 /* initialise the page starts array */ 860 memset(form->page_starts, 0, 861 (form->max_page + 1) * sizeof(_FORMI_PAGE_START)); 862 863 for (i =0; i < form->field_count; i++) { 864 if (form->fields[i]->page_break == 1) 865 cur_page++; 866 if (form->page_starts[cur_page].in_use == 0) { 867 form->page_starts[cur_page].in_use = 1; 868 form->page_starts[cur_page].first = i; 869 form->page_starts[cur_page].last = i; 870 form->page_starts[cur_page].top_left = i; 871 form->page_starts[cur_page].bottom_right = i; 872 } else { 873 form->page_starts[cur_page].last = i; 874 form->page_starts[cur_page].top_left = 875 _formi_top_left(form, 876 form->page_starts[cur_page].top_left, 877 i); 878 form->page_starts[cur_page].bottom_right = 879 _formi_bottom_right(form, 880 form->page_starts[cur_page].bottom_right, 881 i); 882 } 883 } 884 885 return E_OK; 886 } 887 888 /* 889 * Completely redraw the field of the given form. 890 */ 891 void 892 _formi_redraw_field(FORM *form, int field) 893 { 894 unsigned int pre, post, flen, slen, i, row, start, last_row; 895 char *str; 896 FIELD *cur; 897 #ifdef DEBUG 898 char buffer[100]; 899 #endif 900 901 cur = form->fields[field]; 902 str = cur->buffers[0].string; 903 flen = cur->cols; 904 slen = 0; 905 start = 0; 906 907 if ((cur->row_count - cur->start_line) < cur->rows) 908 last_row = cur->row_count; 909 else 910 last_row = cur->start_line + cur->rows; 911 912 for (row = cur->start_line; row < last_row; row++) { 913 wmove(form->scrwin, 914 (int) (cur->form_row + row - cur->start_line), 915 (int) cur->form_col); 916 start = cur->lines[row].start; 917 slen = cur->lines[row].length; 918 919 if ((cur->opts & O_STATIC) == O_STATIC) { 920 switch (cur->justification) { 921 case JUSTIFY_RIGHT: 922 post = 0; 923 if (flen < slen) 924 pre = 0; 925 else 926 pre = flen - slen; 927 break; 928 929 case JUSTIFY_CENTER: 930 if (flen < slen) { 931 pre = 0; 932 post = 0; 933 } else { 934 pre = flen - slen; 935 post = pre = pre / 2; 936 /* get padding right if 937 centring is not even */ 938 if ((post + pre + slen) < flen) 939 post++; 940 } 941 break; 942 943 case NO_JUSTIFICATION: 944 case JUSTIFY_LEFT: 945 default: 946 pre = 0; 947 if (flen <= slen) 948 post = 0; 949 else { 950 post = flen - slen; 951 if (post > flen) 952 post = flen; 953 } 954 break; 955 } 956 } else { 957 /* dynamic fields are not justified */ 958 pre = 0; 959 if (flen <= slen) 960 post = 0; 961 else { 962 post = flen - slen; 963 if (post > flen) 964 post = flen; 965 } 966 967 /* but they do scroll.... */ 968 969 if (pre > cur->start_char - start) 970 pre = pre - cur->start_char + start; 971 else 972 pre = 0; 973 974 if (slen > cur->start_char) { 975 slen -= cur->start_char; 976 post += cur->start_char; 977 if (post > flen) 978 post = flen; 979 } else { 980 slen = 0; 981 post = flen - pre; 982 } 983 } 984 985 if (form->cur_field == field) 986 wattrset(form->scrwin, cur->fore); 987 else 988 wattrset(form->scrwin, cur->back); 989 990 #ifdef DEBUG 991 if (_formi_create_dbg_file() == E_OK) { 992 fprintf(dbg, 993 "redraw_field: start=%d, pre=%d, slen=%d, flen=%d, post=%d, start_char=%d\n", 994 start, pre, slen, flen, post, cur->start_char); 995 if (str != NULL) { 996 strncpy(buffer, 997 &str[cur->start_char 998 + cur->lines[row].start], flen); 999 } else { 1000 strcpy(buffer, "(null)"); 1001 } 1002 buffer[flen] = '\0'; 1003 fprintf(dbg, "redraw_field: %s\n", buffer); 1004 } 1005 #endif 1006 1007 for (i = start + cur->start_char; i < pre; i++) 1008 waddch(form->scrwin, cur->pad); 1009 1010 #ifdef DEBUG 1011 fprintf(dbg, "redraw_field: will add %d chars\n", 1012 min(slen, flen)); 1013 #endif 1014 for (i = 0; i < min(slen, flen); i++) 1015 { 1016 #ifdef DEBUG 1017 fprintf(dbg, "adding char str[%d]=%c\n", 1018 i + cur->start_char + cur->lines[row].start, 1019 str[i + cur->start_char 1020 + cur->lines[row].start]); 1021 #endif 1022 if (((cur->opts & O_PUBLIC) != O_PUBLIC)) { 1023 waddch(form->scrwin, cur->pad); 1024 } else if ((cur->opts & O_VISIBLE) == O_VISIBLE) { 1025 waddch(form->scrwin, str[i + cur->start_char 1026 + cur->lines[row].start]); 1027 } else { 1028 waddch(form->scrwin, ' '); 1029 } 1030 } 1031 1032 for (i = 0; i < post; i++) 1033 waddch(form->scrwin, cur->pad); 1034 } 1035 1036 for (row = cur->row_count - cur->start_line; row < cur->rows; row++) { 1037 wmove(form->scrwin, (int) (cur->form_row + row), 1038 (int) cur->form_col); 1039 for (i = 0; i < cur->cols; i++) { 1040 waddch(form->scrwin, cur->pad); 1041 } 1042 } 1043 1044 return; 1045 } 1046 1047 /* 1048 * Display the fields attached to the form that are on the current page 1049 * on the screen. 1050 * 1051 */ 1052 int 1053 _formi_draw_page(FORM *form) 1054 { 1055 int i; 1056 1057 if (form->page_starts[form->page].in_use == 0) 1058 return E_BAD_ARGUMENT; 1059 1060 wclear(form->scrwin); 1061 1062 for (i = form->page_starts[form->page].first; 1063 i <= form->page_starts[form->page].last; i++) 1064 _formi_redraw_field(form, i); 1065 1066 return E_OK; 1067 } 1068 1069 /* 1070 * Add the character c at the position pos in buffer 0 of the given field 1071 */ 1072 int 1073 _formi_add_char(FIELD *field, unsigned int pos, char c) 1074 { 1075 char *new, old_c; 1076 unsigned int new_size; 1077 int status; 1078 1079 /* 1080 * If buffer has not had a string before, set it to a blank 1081 * string. Everything should flow from there.... 1082 */ 1083 if (field->buffers[0].string == NULL) { 1084 set_field_buffer(field, 0, ""); 1085 } 1086 1087 if (_formi_validate_char(field, c) != E_OK) { 1088 #ifdef DEBUG 1089 fprintf(dbg, "add_char: char %c failed char validation\n", c); 1090 #endif 1091 return E_INVALID_FIELD; 1092 } 1093 1094 #ifdef DEBUG 1095 fprintf(dbg, "add_char: pos=%d, char=%c\n", pos, c); 1096 fprintf(dbg, 1097 "add_char enter: xpos=%d, start=%d, length=%d(%d), allocated=%d\n", 1098 field->cursor_xpos, field->start_char, 1099 field->buffers[0].length, strlen(field->buffers[0].string), 1100 field->buffers[0].allocated); 1101 fprintf(dbg, "add_char enter: %s\n", field->buffers[0].string); 1102 fprintf(dbg, "add_char enter: buf0_status=%d\n", field->buf0_status); 1103 #endif 1104 if (((field->opts & O_BLANK) == O_BLANK) && 1105 (field->buf0_status == FALSE) && 1106 ((field->cursor_xpos + field->start_char) == 0)) { 1107 field->buffers[0].length = 0; 1108 field->buffers[0].string[0] = '\0'; 1109 pos = 0; 1110 field->start_char = 0; 1111 field->start_line = 0; 1112 field->row_count = 1; 1113 field->cursor_xpos = 0; 1114 field->cursor_ypos = 0; 1115 field->lines[0].start = 0; 1116 field->lines[0].end = 0; 1117 field->lines[0].length = 0; 1118 } 1119 1120 1121 if ((field->overlay == 0) 1122 || ((field->overlay == 1) && (pos >= field->buffers[0].length))) { 1123 /* first check if the field can have more chars...*/ 1124 if ((((field->opts & O_STATIC) == O_STATIC) && 1125 (field->buffers[0].length >= (field->cols * field->rows))) || 1126 (((field->opts & O_STATIC) != O_STATIC) && 1127 (check_dynamic_size(field) == FALSE))) 1128 return E_REQUEST_DENIED; 1129 1130 if (field->buffers[0].length + 1 1131 >= field->buffers[0].allocated) { 1132 new_size = field->buffers[0].allocated + 64 1133 - (field->buffers[0].allocated % 64); 1134 if ((new = (char *) realloc(field->buffers[0].string, 1135 new_size )) == NULL) 1136 return E_SYSTEM_ERROR; 1137 field->buffers[0].allocated = new_size; 1138 field->buffers[0].string = new; 1139 } 1140 } 1141 1142 if ((field->overlay == 0) && (field->buffers[0].length > pos)) { 1143 bcopy(&field->buffers[0].string[pos], 1144 &field->buffers[0].string[pos + 1], 1145 field->buffers[0].length - pos + 1); 1146 } 1147 1148 old_c = field->buffers[0].string[pos]; 1149 field->buffers[0].string[pos] = c; 1150 if (pos >= field->buffers[0].length) { 1151 /* make sure the string is terminated if we are at the 1152 * end of the string, the terminator would be missing 1153 * if we are are at the end of the field. 1154 */ 1155 field->buffers[0].string[pos + 1] = '\0'; 1156 } 1157 1158 /* only increment the length if we are inserting characters 1159 * OR if we are at the end of the field in overlay mode. 1160 */ 1161 if ((field->overlay == 0) 1162 || ((field->overlay == 1) && (pos >= field->buffers[0].length))) { 1163 field->buffers[0].length++; 1164 bump_lines(field, (int) pos, 1, TRUE); 1165 } 1166 1167 1168 /* wrap the field, if needed */ 1169 status = _formi_wrap_field(field, pos); 1170 1171 /* 1172 * check the wrap worked or that we have not exceeded the 1173 * max field size - this can happen if the field is re-wrapped 1174 * and the row count is increased past the set limit. 1175 */ 1176 if ((status != E_OK) || (check_dynamic_size(field) == FALSE)) { 1177 if ((field->overlay == 0) 1178 || ((field->overlay == 1) 1179 && (pos >= field->buffers[0].length))) { 1180 /* 1181 * wrap failed for some reason, back out the 1182 * char insert 1183 */ 1184 bcopy(&field->buffers[0].string[pos + 1], 1185 &field->buffers[0].string[pos], 1186 field->buffers[0].length - pos); 1187 field->buffers[0].length--; 1188 bump_lines(field, (int) pos, -1, TRUE); 1189 } else if (field->overlay == 1) { 1190 /* back out character overlay */ 1191 field->buffers[0].string[pos] = old_c; 1192 } 1193 1194 _formi_wrap_field(field, ((pos > 0)? pos - 1 : 0)); 1195 } else { 1196 field->buf0_status = TRUE; 1197 if ((field->rows + field->nrows) == 1) { 1198 if ((field->cursor_xpos < (field->cols - 1)) || 1199 ((field->opts & O_STATIC) != O_STATIC)) 1200 field->cursor_xpos++; 1201 1202 if (field->cursor_xpos > field->cols) { 1203 field->start_char++; 1204 field->cursor_xpos = field->cols; 1205 } 1206 } else { 1207 new_size = find_cur_line(field, pos); 1208 if (new_size >= field->rows) { 1209 field->cursor_ypos = field->rows - 1; 1210 field->start_line = field->row_count 1211 - field->cursor_ypos - 1; 1212 } else 1213 field->cursor_ypos = new_size; 1214 1215 if ((field->lines[new_size].start) <= (pos + 1)) { 1216 field->cursor_xpos = pos 1217 - field->lines[new_size].start + 1; 1218 } else { 1219 field->cursor_xpos = 0; 1220 } 1221 1222 /* 1223 * Annoying corner case - if we are right in 1224 * the bottom right corner of the field we 1225 * need to scroll the field one line so the 1226 * cursor is positioned correctly in the 1227 * field. 1228 */ 1229 if ((field->cursor_xpos >= field->cols) && 1230 (field->cursor_ypos == (field->rows - 1))) { 1231 field->cursor_ypos--; 1232 field->start_line++; 1233 } 1234 } 1235 } 1236 1237 #ifdef DEBUG 1238 assert((field->cursor_xpos <= field->cols) 1239 && (field->cursor_ypos < 400000) 1240 && (field->start_line < 400000)); 1241 1242 fprintf(dbg, 1243 "add_char exit: xpos=%d, start=%d, length=%d(%d), allocated=%d\n", 1244 field->cursor_xpos, field->start_char, 1245 field->buffers[0].length, strlen(field->buffers[0].string), 1246 field->buffers[0].allocated); 1247 fprintf(dbg, "add_char exit: ypos=%d, start_line=%d\n", 1248 field->cursor_ypos, field->start_line); 1249 fprintf(dbg,"add_char exit: %s\n", field->buffers[0].string); 1250 fprintf(dbg, "add_char exit: buf0_status=%d\n", field->buf0_status); 1251 fprintf(dbg, "add_char exit: status = %s\n", 1252 (status == E_OK)? "OK" : "FAILED"); 1253 #endif 1254 return status; 1255 } 1256 1257 /* 1258 * Manipulate the text in a field, this takes the given form and performs 1259 * the passed driver command on the current text field. Returns 1 if the 1260 * text field was modified. 1261 */ 1262 int 1263 _formi_manipulate_field(FORM *form, int c) 1264 { 1265 FIELD *cur; 1266 char *str, saved; 1267 unsigned int i, start, end, pos, row, status, old_count; 1268 int len; 1269 1270 cur = form->fields[form->cur_field]; 1271 1272 #ifdef DEBUG 1273 fprintf(dbg, 1274 "entry: xpos=%d, start_char=%d, length=%d, allocated=%d\n", 1275 cur->cursor_xpos, cur->start_char, cur->buffers[0].length, 1276 cur->buffers[0].allocated); 1277 fprintf(dbg, "entry: start_line=%d, ypos=%d\n", cur->start_line, 1278 cur->cursor_ypos); 1279 fprintf(dbg, "entry: string="); 1280 if (cur->buffers[0].string == NULL) 1281 fprintf(dbg, "(null)\n"); 1282 else 1283 fprintf(dbg, "\"%s\"\n", cur->buffers[0].string); 1284 #endif 1285 1286 /* Cannot manipulate a null string! */ 1287 if (cur->buffers[0].string == NULL) 1288 return E_REQUEST_DENIED; 1289 1290 switch (c) { 1291 case REQ_NEXT_CHAR: 1292 /* for a dynamic field allow an offset of one more 1293 * char so we can insert chars after end of string. 1294 * Static fields cannot do this so deny request if 1295 * cursor is at the end of the field. 1296 */ 1297 if (((cur->opts & O_STATIC) == O_STATIC) && 1298 (cur->cursor_xpos == cur->cols - 1) && 1299 ((cur->rows + cur->nrows) == 1)) 1300 return E_REQUEST_DENIED; 1301 1302 if ((cur->cursor_xpos + cur->start_char + 1) 1303 > cur->buffers[0].length) 1304 return E_REQUEST_DENIED; 1305 1306 if ((cur->rows + cur->nrows) == 1) { 1307 cur->cursor_xpos++; 1308 if (cur->cursor_xpos >= cur->cols - 1) { 1309 cur->cursor_xpos = cur->cols - 1; 1310 if ((cur->opts & O_STATIC) != O_STATIC) 1311 cur->start_char++; 1312 } 1313 } else { 1314 row = cur->start_line + cur->cursor_ypos; 1315 if (cur->cursor_xpos == (cur->lines[row].length - 1)) { 1316 if ((row + 1) >= cur->row_count) 1317 return E_REQUEST_DENIED; 1318 1319 cur->cursor_xpos = 0; 1320 if (cur->cursor_ypos == (cur->rows - 1)) 1321 cur->start_line++; 1322 else 1323 cur->cursor_ypos++; 1324 } else 1325 cur->cursor_xpos++; 1326 } 1327 1328 break; 1329 1330 case REQ_PREV_CHAR: 1331 if ((cur->rows + cur->nrows) == 1) { 1332 if (cur->cursor_xpos == 0) { 1333 if (cur->start_char > 0) 1334 cur->start_char--; 1335 else 1336 return E_REQUEST_DENIED; 1337 } else 1338 cur->cursor_xpos--; 1339 } else { 1340 if ((cur->cursor_xpos == 0) && 1341 (cur->cursor_ypos == 0) && 1342 (cur->start_line == 0)) 1343 return E_REQUEST_DENIED; 1344 1345 if (cur->cursor_xpos > 0) { 1346 cur->cursor_xpos--; 1347 } else { 1348 if (cur->cursor_ypos > 0) 1349 cur->cursor_ypos--; 1350 else 1351 cur->start_line--; 1352 cur->cursor_xpos = 1353 cur->lines[cur->start_line 1354 + cur->cursor_ypos].length 1355 - 1; 1356 } 1357 } 1358 1359 break; 1360 1361 case REQ_NEXT_LINE: 1362 if ((cur->start_line + cur->cursor_ypos + 1) >= cur->row_count) 1363 return E_REQUEST_DENIED; 1364 1365 if ((cur->cursor_ypos + 1) >= cur->rows) { 1366 cur->start_line++; 1367 } else 1368 cur->cursor_ypos++; 1369 break; 1370 1371 case REQ_PREV_LINE: 1372 if (cur->cursor_ypos == 0) { 1373 if (cur->start_line == 0) 1374 return E_REQUEST_DENIED; 1375 cur->start_line--; 1376 } else 1377 cur->cursor_ypos--; 1378 break; 1379 1380 case REQ_NEXT_WORD: 1381 start = cur->lines[cur->start_line + cur->cursor_ypos].start 1382 + cur->cursor_xpos + cur->start_char; 1383 str = cur->buffers[0].string; 1384 1385 start = find_eow(str, start); 1386 1387 /* check if we hit the end */ 1388 if (str[start] == '\0') 1389 return E_REQUEST_DENIED; 1390 1391 /* otherwise we must have found the start of a word...*/ 1392 if ((cur->rows + cur->nrows) == 1) { 1393 /* single line field */ 1394 if (start - cur->start_char < cur->cols) { 1395 cur->cursor_xpos = start; 1396 } else { 1397 cur->start_char = start; 1398 cur->cursor_xpos = 0; 1399 } 1400 } else { 1401 /* multiline field */ 1402 row = find_cur_line(cur, start); 1403 cur->cursor_xpos = start - cur->lines[row].start; 1404 if (row != (cur->start_line + cur->cursor_ypos)) { 1405 if (cur->cursor_ypos == (cur->rows - 1)) { 1406 cur->start_line = row - cur->rows + 1; 1407 } else { 1408 cur->cursor_ypos = row 1409 - cur->start_line; 1410 } 1411 } 1412 } 1413 break; 1414 1415 case REQ_PREV_WORD: 1416 start = cur->start_char + cur->cursor_xpos 1417 + cur->lines[cur->start_line + cur->cursor_ypos].start; 1418 if (cur->start_char > 0) 1419 start--; 1420 1421 if (start == 0) 1422 return E_REQUEST_DENIED; 1423 1424 str = cur->buffers[0].string; 1425 1426 start = find_sow(str, start); 1427 1428 if ((cur->rows + cur->nrows) == 1) { 1429 /* single line field */ 1430 if (start - cur->start_char > 0) { 1431 cur->cursor_xpos = start; 1432 } else { 1433 cur->start_char = start; 1434 cur->cursor_xpos = 0; 1435 } 1436 } else { 1437 /* multiline field */ 1438 row = find_cur_line(cur, start); 1439 cur->cursor_xpos = start - cur->lines[row].start; 1440 if (row != (cur->start_line + cur->cursor_ypos)) { 1441 if (cur->cursor_ypos == 0) { 1442 cur->start_line = row; 1443 } else { 1444 if (cur->start_line > row) { 1445 cur->start_line = row; 1446 cur->cursor_ypos = 0; 1447 } else { 1448 cur->cursor_ypos = row - 1449 cur->start_line; 1450 } 1451 } 1452 } 1453 } 1454 1455 break; 1456 1457 case REQ_BEG_FIELD: 1458 cur->start_char = 0; 1459 cur->start_line = 0; 1460 cur->cursor_xpos = 0; 1461 cur->cursor_ypos = 0; 1462 break; 1463 1464 case REQ_BEG_LINE: 1465 cur->cursor_xpos = 0; 1466 cur->start_char = 0; 1467 break; 1468 1469 case REQ_END_FIELD: 1470 if (cur->row_count > cur->rows) { 1471 cur->start_line = cur->row_count - cur->rows; 1472 cur->cursor_ypos = cur->rows - 1; 1473 } else { 1474 cur->start_line = 0; 1475 cur->cursor_ypos = cur->row_count - 1; 1476 } 1477 1478 /* we fall through here deliberately, we are on the 1479 * correct row, now we need to get to the end of the 1480 * line. 1481 */ 1482 /* FALLTHRU */ 1483 1484 case REQ_END_LINE: 1485 start = cur->lines[cur->start_line + cur->cursor_ypos].start; 1486 end = cur->lines[cur->start_line + cur->cursor_ypos].end; 1487 1488 if ((cur->rows + cur->nrows) == 1) { 1489 if (end - start > cur->cols - 1) { 1490 cur->cursor_xpos = cur->cols - 1; 1491 cur->start_char = end - cur->cols; 1492 if ((cur->opts & O_STATIC) != O_STATIC) 1493 cur->start_char++; 1494 } else { 1495 cur->cursor_xpos = end - start + 1; 1496 if (((cur->opts & O_STATIC) == O_STATIC) && 1497 ((end - start) == (cur->cols - 1))) 1498 cur->cursor_xpos--; 1499 1500 cur->start_char = start; 1501 } 1502 } else { 1503 cur->cursor_xpos = end - start + 1; 1504 } 1505 break; 1506 1507 case REQ_LEFT_CHAR: 1508 if ((cur->cursor_xpos == 0) && (cur->start_char == 0) 1509 && (cur->start_line == 0) && (cur->cursor_ypos == 0)) 1510 return E_REQUEST_DENIED; 1511 1512 if (cur->cursor_xpos == 0) { 1513 if ((cur->rows + cur->nrows) == 1) { 1514 if (cur->start_char > 0) 1515 cur->start_char--; 1516 else 1517 return E_REQUEST_DENIED; 1518 } else { 1519 if ((cur->cursor_ypos == 0) && 1520 (cur->start_line == 0)) 1521 return E_REQUEST_DENIED; 1522 1523 if (cur->cursor_ypos == 0) 1524 cur->start_line--; 1525 else 1526 cur->cursor_ypos--; 1527 1528 cur->cursor_xpos = 1529 cur->lines[cur->cursor_ypos 1530 + cur->start_line].length; 1531 } 1532 } else 1533 cur->cursor_xpos--; 1534 break; 1535 1536 case REQ_RIGHT_CHAR: 1537 pos = cur->start_char + cur->cursor_xpos; 1538 row = cur->start_line + cur->cursor_ypos; 1539 end = cur->lines[row].end; 1540 1541 if (cur->buffers[0].string[pos] == '\0') 1542 return E_REQUEST_DENIED; 1543 1544 #ifdef DEBUG 1545 fprintf(dbg, "req_right_char enter: start=%d, xpos=%d, c=%c\n", 1546 cur->start_char, cur->cursor_xpos, 1547 cur->buffers[0].string[pos]); 1548 #endif 1549 1550 if (pos == end) { 1551 start = pos + 1; 1552 if ((cur->buffers[0].length <= start) 1553 || ((row + 1) >= cur->row_count)) 1554 return E_REQUEST_DENIED; 1555 1556 if ((cur->cursor_ypos + 1) >= cur->rows) { 1557 cur->start_line++; 1558 cur->cursor_ypos = cur->rows - 1; 1559 } else 1560 cur->cursor_ypos++; 1561 1562 cur->cursor_xpos = 0; 1563 } else { 1564 if (((cur->rows + cur->nrows) == 1) && 1565 (cur->cursor_xpos == cur->cols - 1)) 1566 cur->start_char++; 1567 else 1568 cur->cursor_xpos++; 1569 } 1570 #ifdef DEBUG 1571 fprintf(dbg, "req_right_char exit: start=%d, xpos=%d, c=%c\n", 1572 cur->start_char, cur->cursor_xpos, 1573 cur->buffers[0].string[cur->start_char + 1574 cur->cursor_xpos]); 1575 #endif 1576 break; 1577 1578 case REQ_UP_CHAR: 1579 if (cur->cursor_ypos == 0) { 1580 if (cur->start_line == 0) 1581 return E_REQUEST_DENIED; 1582 1583 cur->start_line--; 1584 } else 1585 cur->cursor_ypos--; 1586 1587 row = cur->start_line + cur->cursor_ypos; 1588 1589 if (cur->cursor_xpos > cur->lines[row].length) 1590 cur->cursor_xpos = cur->lines[row].length; 1591 break; 1592 1593 case REQ_DOWN_CHAR: 1594 if (cur->cursor_ypos == cur->rows - 1) { 1595 if (cur->start_line + cur->rows == cur->row_count) 1596 return E_REQUEST_DENIED; 1597 cur->start_line++; 1598 } else 1599 cur->cursor_ypos++; 1600 1601 row = cur->start_line + cur->cursor_ypos; 1602 if (cur->cursor_xpos > cur->lines[row].length) 1603 cur->cursor_xpos = cur->lines[row].length; 1604 break; 1605 1606 case REQ_NEW_LINE: 1607 if ((status = split_line(cur, 1608 cur->start_char + cur->cursor_xpos)) != E_OK) 1609 return status; 1610 break; 1611 1612 case REQ_INS_CHAR: 1613 if ((status = _formi_add_char(cur, cur->start_char 1614 + cur->cursor_xpos, 1615 cur->pad)) != E_OK) 1616 return status; 1617 break; 1618 1619 case REQ_INS_LINE: 1620 start = cur->lines[cur->start_line + cur->cursor_ypos].start; 1621 if ((status = split_line(cur, start)) != E_OK) 1622 return status; 1623 break; 1624 1625 case REQ_DEL_CHAR: 1626 if (cur->buffers[0].length == 0) 1627 return E_REQUEST_DENIED; 1628 1629 row = cur->start_line + cur->cursor_ypos; 1630 start = cur->start_char + cur->cursor_xpos 1631 + cur->lines[row].start; 1632 end = cur->buffers[0].length; 1633 if (start == cur->lines[row].end) { 1634 if ((cur->rows + cur->nrows) > 1) { 1635 if (cur->row_count > 1) { 1636 if (_formi_join_line(cur, 1637 start, 1638 JOIN_NEXT_NW) 1639 != E_OK) { 1640 return E_REQUEST_DENIED; 1641 } 1642 } else 1643 return E_REQUEST_DENIED; 1644 } else 1645 return E_REQUEST_DENIED; 1646 } 1647 1648 saved = cur->buffers[0].string[start]; 1649 bcopy(&cur->buffers[0].string[start + 1], 1650 &cur->buffers[0].string[start], 1651 (unsigned) end - start + 1); 1652 cur->buffers[0].length--; 1653 bump_lines(cur, _FORMI_USE_CURRENT, -1, TRUE); 1654 if ((cur->rows + cur->nrows) > 1) { 1655 if (_formi_wrap_field(cur, start) != E_OK) { 1656 bcopy(&cur->buffers[0].string[start], 1657 &cur->buffers[0].string[start + 1], 1658 (unsigned) end - start); 1659 cur->buffers[0].length++; 1660 cur->buffers[0].string[start] = saved; 1661 bump_lines(cur, _FORMI_USE_CURRENT, 1, TRUE); 1662 _formi_wrap_field(cur, start); 1663 return E_REQUEST_DENIED; 1664 } 1665 } 1666 break; 1667 1668 case REQ_DEL_PREV: 1669 if ((cur->cursor_xpos == 0) && (cur->start_char == 0) 1670 && (cur->start_line == 0) && (cur->cursor_ypos == 0)) 1671 return E_REQUEST_DENIED; 1672 1673 row = cur->start_line + cur->cursor_ypos; 1674 start = cur->cursor_xpos + cur->start_char 1675 + cur->lines[row].start; 1676 end = cur->buffers[0].length; 1677 1678 if ((cur->start_char + cur->cursor_xpos) == 0) { 1679 if (_formi_join_line(cur, cur->lines[row].start, 1680 JOIN_PREV_NW) != E_OK) { 1681 return E_REQUEST_DENIED; 1682 } 1683 } 1684 1685 saved = cur->buffers[0].string[start - 1]; 1686 bcopy(&cur->buffers[0].string[start], 1687 &cur->buffers[0].string[start - 1], 1688 (unsigned) end - start + 1); 1689 bump_lines(cur, (int) start - 1, -1, TRUE); 1690 cur->buffers[0].length--; 1691 1692 if ((cur->rows + cur->nrows) == 1) { 1693 if ((cur->cursor_xpos == 0) && (cur->start_char > 0)) 1694 cur->start_char--; 1695 else if ((cur->cursor_xpos == cur->cols - 1) 1696 && (cur->start_char > 0)) 1697 cur->start_char--; 1698 else if (cur->cursor_xpos > 0) 1699 cur->cursor_xpos--; 1700 } else { 1701 pos = start - 1; 1702 if (pos >= cur->buffers[0].length) 1703 pos = cur->buffers[0].length - 1; 1704 1705 if ((_formi_wrap_field(cur, pos) != E_OK)) { 1706 bcopy(&cur->buffers[0].string[start - 1], 1707 &cur->buffers[0].string[start], 1708 (unsigned) end - start); 1709 cur->buffers[0].length++; 1710 cur->buffers[0].string[start - 1] = saved; 1711 bump_lines(cur, (int) start - 1, 1, TRUE); 1712 _formi_wrap_field(cur, pos); 1713 return E_REQUEST_DENIED; 1714 } 1715 1716 row = find_cur_line(cur, pos); 1717 cur->cursor_xpos = start - cur->lines[row].start - 1; 1718 1719 if (row >= cur->rows) 1720 cur->start_line = row - cur->cursor_ypos; 1721 else { 1722 cur->start_line = 0; 1723 cur->cursor_ypos = row; 1724 } 1725 } 1726 break; 1727 1728 case REQ_DEL_LINE: 1729 row = cur->start_line + cur->cursor_ypos; 1730 start = cur->lines[row].start; 1731 end = cur->lines[row].end; 1732 bcopy(&cur->buffers[0].string[end + 1], 1733 &cur->buffers[0].string[start], 1734 (unsigned) cur->buffers[0].length - end + 1); 1735 1736 if (((cur->rows + cur->nrows) == 1) || 1737 (cur->row_count == 1)) { 1738 /* single line case */ 1739 cur->buffers[0].length = 0; 1740 cur->lines[0].end = cur->lines[0].length = 0; 1741 cur->cursor_xpos = cur->cursor_ypos = 0; 1742 } else { 1743 /* multiline field */ 1744 old_count = cur->row_count; 1745 cur->row_count--; 1746 if (cur->row_count == 0) 1747 cur->row_count = 1; 1748 1749 if (cur->row_count > 1) 1750 bcopy(&cur->lines[row + 1], 1751 &cur->lines[row], 1752 (unsigned) (cur->row_count - row) 1753 * sizeof(struct _formi_field_lines)); 1754 1755 cur->lines[row].start = start; 1756 len = start - end - 1; /* yes, this is negative */ 1757 1758 if (row < (cur->row_count - 1)) 1759 bump_lines(cur, (int) start, len, FALSE); 1760 else if (old_count == 1) { 1761 cur->lines[0].end = cur->lines[0].length = 0; 1762 cur->cursor_xpos = 0; 1763 cur->cursor_ypos = 0; 1764 } else if (cur->row_count == 1) { 1765 cur->lines[0].length = cur->buffers[0].length 1766 + len; 1767 cur->lines[0].end = cur->lines[0].length - 1; 1768 } 1769 1770 cur->buffers[0].length += len; 1771 1772 if (row > (cur->row_count - 1)) { 1773 row--; 1774 if (cur->cursor_ypos == 0) { 1775 if (cur->start_line > 0) { 1776 cur->start_line--; 1777 } 1778 } else { 1779 cur->cursor_ypos--; 1780 } 1781 } 1782 1783 if (old_count > 1) { 1784 if (cur->cursor_xpos > cur->lines[row].length) 1785 cur->cursor_xpos = 1786 cur->lines[row].length - 1; 1787 if (row >= cur->rows) 1788 cur->start_line = row 1789 - cur->cursor_ypos; 1790 else { 1791 cur->start_line = 0; 1792 cur->cursor_ypos = row; 1793 } 1794 } 1795 } 1796 break; 1797 1798 case REQ_DEL_WORD: 1799 start = cur->start_char + cur->cursor_xpos; 1800 end = find_eow(cur->buffers[0].string, start); 1801 start = find_sow(cur->buffers[0].string, start); 1802 bcopy(&cur->buffers[0].string[end + 1], 1803 &cur->buffers[0].string[start], 1804 (unsigned) cur->buffers[0].length - end + 1); 1805 len = end - start; 1806 cur->buffers[0].length -= len; 1807 bump_lines(cur, _FORMI_USE_CURRENT, - (int) len, TRUE); 1808 1809 if (cur->cursor_xpos > cur->lines[row].length) 1810 cur->cursor_xpos = cur->lines[row].length; 1811 break; 1812 1813 case REQ_CLR_EOL: 1814 row = cur->start_line + cur->cursor_ypos; 1815 start = cur->start_char + cur->cursor_xpos; 1816 end = cur->lines[row].end; 1817 len = end - start; 1818 bcopy(&cur->buffers[0].string[end + 1], 1819 &cur->buffers[0].string[start], 1820 cur->buffers[0].length - end + 1); 1821 cur->buffers[0].length -= len; 1822 bump_lines(cur, _FORMI_USE_CURRENT, - (int) len, TRUE); 1823 1824 if (cur->cursor_xpos > cur->lines[row].length) 1825 cur->cursor_xpos = cur->lines[row].length; 1826 break; 1827 1828 case REQ_CLR_EOF: 1829 row = cur->start_line + cur->cursor_ypos; 1830 cur->buffers[0].string[cur->start_char 1831 + cur->cursor_xpos] = '\0'; 1832 cur->buffers[0].length = strlen(cur->buffers[0].string); 1833 cur->lines[row].end = cur->buffers[0].length; 1834 cur->lines[row].length = cur->lines[row].end 1835 - cur->lines[row].start; 1836 1837 for (i = cur->start_char + cur->cursor_xpos; 1838 i < cur->buffers[0].length; i++) 1839 cur->buffers[0].string[i] = cur->pad; 1840 break; 1841 1842 case REQ_CLR_FIELD: 1843 cur->buffers[0].string[0] = '\0'; 1844 cur->buffers[0].length = 0; 1845 cur->row_count = 1; 1846 cur->start_line = 0; 1847 cur->cursor_ypos = 0; 1848 cur->cursor_xpos = 0; 1849 cur->start_char = 0; 1850 cur->lines[0].start = 0; 1851 cur->lines[0].end = 0; 1852 cur->lines[0].length = 0; 1853 break; 1854 1855 case REQ_OVL_MODE: 1856 cur->overlay = 1; 1857 break; 1858 1859 case REQ_INS_MODE: 1860 cur->overlay = 0; 1861 break; 1862 1863 case REQ_SCR_FLINE: 1864 _formi_scroll_fwd(cur, 1); 1865 break; 1866 1867 case REQ_SCR_BLINE: 1868 _formi_scroll_back(cur, 1); 1869 break; 1870 1871 case REQ_SCR_FPAGE: 1872 _formi_scroll_fwd(cur, cur->rows); 1873 break; 1874 1875 case REQ_SCR_BPAGE: 1876 _formi_scroll_back(cur, cur->rows); 1877 break; 1878 1879 case REQ_SCR_FHPAGE: 1880 _formi_scroll_fwd(cur, cur->rows / 2); 1881 break; 1882 1883 case REQ_SCR_BHPAGE: 1884 _formi_scroll_back(cur, cur->rows / 2); 1885 break; 1886 1887 case REQ_SCR_FCHAR: 1888 _formi_hscroll_fwd(cur, 1); 1889 break; 1890 1891 case REQ_SCR_BCHAR: 1892 _formi_hscroll_back(cur, 1); 1893 break; 1894 1895 case REQ_SCR_HFLINE: 1896 _formi_hscroll_fwd(cur, cur->cols); 1897 break; 1898 1899 case REQ_SCR_HBLINE: 1900 _formi_hscroll_back(cur, cur->cols); 1901 break; 1902 1903 case REQ_SCR_HFHALF: 1904 _formi_hscroll_fwd(cur, cur->cols / 2); 1905 break; 1906 1907 case REQ_SCR_HBHALF: 1908 _formi_hscroll_back(cur, cur->cols / 2); 1909 break; 1910 1911 default: 1912 return 0; 1913 } 1914 1915 #ifdef DEBUG 1916 fprintf(dbg, "exit: xpos=%d, start_char=%d, length=%d, allocated=%d\n", 1917 cur->cursor_xpos, cur->start_char, cur->buffers[0].length, 1918 cur->buffers[0].allocated); 1919 fprintf(dbg, "exit: start_line=%d, ypos=%d\n", cur->start_line, 1920 cur->cursor_ypos); 1921 fprintf(dbg, "exit: string=\"%s\"\n", cur->buffers[0].string); 1922 #endif 1923 return 1; 1924 } 1925 1926 /* 1927 * Validate the give character by passing it to any type character 1928 * checking routines, if they exist. 1929 */ 1930 int 1931 _formi_validate_char(FIELD *field, char c) 1932 { 1933 int ret_val; 1934 1935 if (field->type == NULL) 1936 return E_OK; 1937 1938 ret_val = E_INVALID_FIELD; 1939 _formi_do_char_validation(field, field->type, c, &ret_val); 1940 1941 return ret_val; 1942 } 1943 1944 1945 /* 1946 * Perform the validation of the character, invoke all field_type validation 1947 * routines. If the field is ok then update ret_val to E_OK otherwise 1948 * ret_val is not changed. 1949 */ 1950 static void 1951 _formi_do_char_validation(FIELD *field, FIELDTYPE *type, char c, int *ret_val) 1952 { 1953 if ((type->flags & _TYPE_IS_LINKED) == _TYPE_IS_LINKED) { 1954 _formi_do_char_validation(field, type->link->next, c, ret_val); 1955 _formi_do_char_validation(field, type->link->prev, c, ret_val); 1956 } else { 1957 if (type->char_check == NULL) 1958 *ret_val = E_OK; 1959 else { 1960 if (type->char_check((int)(unsigned char) c, 1961 field->args) == TRUE) 1962 *ret_val = E_OK; 1963 } 1964 } 1965 } 1966 1967 /* 1968 * Validate the current field. If the field validation returns success then 1969 * return E_OK otherwise return E_INVALID_FIELD. 1970 * 1971 */ 1972 int 1973 _formi_validate_field(FORM *form) 1974 { 1975 FIELD *cur; 1976 char *bp; 1977 int ret_val, count; 1978 1979 1980 if ((form == NULL) || (form->fields == NULL) || 1981 (form->fields[0] == NULL)) 1982 return E_INVALID_FIELD; 1983 1984 cur = form->fields[form->cur_field]; 1985 1986 bp = cur->buffers[0].string; 1987 count = _formi_skip_blanks(bp, 0); 1988 1989 /* check if we have a null field, depending on the nullok flag 1990 * this may be acceptable or not.... 1991 */ 1992 if (cur->buffers[0].string[count] == '\0') { 1993 if ((cur->opts & O_NULLOK) == O_NULLOK) 1994 return E_OK; 1995 else 1996 return E_INVALID_FIELD; 1997 } 1998 1999 /* check if an unmodified field is ok */ 2000 if (cur->buf0_status == 0) { 2001 if ((cur->opts & O_PASSOK) == O_PASSOK) 2002 return E_OK; 2003 else 2004 return E_INVALID_FIELD; 2005 } 2006 2007 /* if there is no type then just accept the field */ 2008 if (cur->type == NULL) 2009 return E_OK; 2010 2011 ret_val = E_INVALID_FIELD; 2012 _formi_do_validation(cur, cur->type, &ret_val); 2013 2014 return ret_val; 2015 } 2016 2017 /* 2018 * Perform the validation of the field, invoke all field_type validation 2019 * routines. If the field is ok then update ret_val to E_OK otherwise 2020 * ret_val is not changed. 2021 */ 2022 static void 2023 _formi_do_validation(FIELD *field, FIELDTYPE *type, int *ret_val) 2024 { 2025 if ((type->flags & _TYPE_IS_LINKED) == _TYPE_IS_LINKED) { 2026 _formi_do_validation(field, type->link->next, ret_val); 2027 _formi_do_validation(field, type->link->prev, ret_val); 2028 } else { 2029 if (type->field_check == NULL) 2030 *ret_val = E_OK; 2031 else { 2032 if (type->field_check(field, field_buffer(field, 0)) 2033 == TRUE) 2034 *ret_val = E_OK; 2035 } 2036 } 2037 } 2038 2039 /* 2040 * Select the next/previous choice for the field, the driver command 2041 * selecting the direction will be passed in c. Return 1 if a choice 2042 * selection succeeded, 0 otherwise. 2043 */ 2044 int 2045 _formi_field_choice(FORM *form, int c) 2046 { 2047 FIELDTYPE *type; 2048 FIELD *field; 2049 2050 if ((form == NULL) || (form->fields == NULL) || 2051 (form->fields[0] == NULL) || 2052 (form->fields[form->cur_field]->type == NULL)) 2053 return 0; 2054 2055 field = form->fields[form->cur_field]; 2056 type = field->type; 2057 2058 switch (c) { 2059 case REQ_NEXT_CHOICE: 2060 if (type->next_choice == NULL) 2061 return 0; 2062 else 2063 return type->next_choice(field, 2064 field_buffer(field, 0)); 2065 2066 case REQ_PREV_CHOICE: 2067 if (type->prev_choice == NULL) 2068 return 0; 2069 else 2070 return type->prev_choice(field, 2071 field_buffer(field, 0)); 2072 2073 default: /* should never happen! */ 2074 return 0; 2075 } 2076 } 2077 2078 /* 2079 * Update the fields if they have changed. The parameter old has the 2080 * previous current field as the current field may have been updated by 2081 * the driver. Return 1 if the form page needs updating. 2082 * 2083 */ 2084 int 2085 _formi_update_field(FORM *form, int old_field) 2086 { 2087 int cur, i; 2088 2089 cur = form->cur_field; 2090 2091 if (old_field != cur) { 2092 if (!((cur >= form->page_starts[form->page].first) && 2093 (cur <= form->page_starts[form->page].last))) { 2094 /* not on same page any more */ 2095 for (i = 0; i < form->max_page; i++) { 2096 if ((form->page_starts[i].in_use == 1) && 2097 (form->page_starts[i].first <= cur) && 2098 (form->page_starts[i].last >= cur)) { 2099 form->page = i; 2100 return 1; 2101 } 2102 } 2103 } 2104 } 2105 2106 _formi_redraw_field(form, old_field); 2107 _formi_redraw_field(form, form->cur_field); 2108 return 0; 2109 } 2110 2111 /* 2112 * Compare function for the field sorting 2113 * 2114 */ 2115 static int 2116 field_sort_compare(const void *one, const void *two) 2117 { 2118 const FIELD *a, *b; 2119 int tl; 2120 2121 /* LINTED const castaway; we don't modify these! */ 2122 a = (const FIELD *) *((const FIELD **) one); 2123 b = (const FIELD *) *((const FIELD **) two); 2124 2125 if (a == NULL) 2126 return 1; 2127 2128 if (b == NULL) 2129 return -1; 2130 2131 /* 2132 * First check the page, we want the fields sorted by page. 2133 * 2134 */ 2135 if (a->page != b->page) 2136 return ((a->page > b->page)? 1 : -1); 2137 2138 tl = _formi_top_left(a->parent, a->index, b->index); 2139 2140 /* 2141 * sort fields left to right, top to bottom so the top left is 2142 * the less than value.... 2143 */ 2144 return ((tl == a->index)? -1 : 1); 2145 } 2146 2147 /* 2148 * Sort the fields in a form ready for driver traversal. 2149 */ 2150 void 2151 _formi_sort_fields(FORM *form) 2152 { 2153 FIELD **sort_area; 2154 int i; 2155 2156 CIRCLEQ_INIT(&form->sorted_fields); 2157 2158 if ((sort_area = (FIELD **) malloc(sizeof(FIELD *) * form->field_count)) 2159 == NULL) 2160 return; 2161 2162 bcopy(form->fields, sort_area, sizeof(FIELD *) * form->field_count); 2163 qsort(sort_area, (unsigned) form->field_count, sizeof(FIELD *), 2164 field_sort_compare); 2165 2166 for (i = 0; i < form->field_count; i++) 2167 CIRCLEQ_INSERT_TAIL(&form->sorted_fields, sort_area[i], glue); 2168 2169 free(sort_area); 2170 } 2171 2172 /* 2173 * Set the neighbours for all the fields in the given form. 2174 */ 2175 void 2176 _formi_stitch_fields(FORM *form) 2177 { 2178 int above_row, below_row, end_above, end_below, cur_row, real_end; 2179 FIELD *cur, *above, *below; 2180 2181 /* 2182 * check if the sorted fields circle queue is empty, just 2183 * return if it is. 2184 */ 2185 if (CIRCLEQ_EMPTY(&form->sorted_fields)) 2186 return; 2187 2188 /* initially nothing is above..... */ 2189 above_row = -1; 2190 end_above = TRUE; 2191 above = NULL; 2192 2193 /* set up the first field as the current... */ 2194 cur = CIRCLEQ_FIRST(&form->sorted_fields); 2195 cur_row = cur->form_row; 2196 2197 /* find the first field on the next row if any */ 2198 below = CIRCLEQ_NEXT(cur, glue); 2199 below_row = -1; 2200 end_below = TRUE; 2201 real_end = TRUE; 2202 while (below != (void *)&form->sorted_fields) { 2203 if (below->form_row != cur_row) { 2204 below_row = below->form_row; 2205 end_below = FALSE; 2206 real_end = FALSE; 2207 break; 2208 } 2209 below = CIRCLEQ_NEXT(below, glue); 2210 } 2211 2212 /* walk the sorted fields, setting the neighbour pointers */ 2213 while (cur != (void *) &form->sorted_fields) { 2214 if (cur == CIRCLEQ_FIRST(&form->sorted_fields)) 2215 cur->left = NULL; 2216 else 2217 cur->left = CIRCLEQ_PREV(cur, glue); 2218 2219 if (cur == CIRCLEQ_LAST(&form->sorted_fields)) 2220 cur->right = NULL; 2221 else 2222 cur->right = CIRCLEQ_NEXT(cur, glue); 2223 2224 if (end_above == TRUE) 2225 cur->up = NULL; 2226 else { 2227 cur->up = above; 2228 above = CIRCLEQ_NEXT(above, glue); 2229 if (above_row != above->form_row) { 2230 end_above = TRUE; 2231 above_row = above->form_row; 2232 } 2233 } 2234 2235 if (end_below == TRUE) 2236 cur->down = NULL; 2237 else { 2238 cur->down = below; 2239 below = CIRCLEQ_NEXT(below, glue); 2240 if (below == (void *) &form->sorted_fields) { 2241 end_below = TRUE; 2242 real_end = TRUE; 2243 } else if (below_row != below->form_row) { 2244 end_below = TRUE; 2245 below_row = below->form_row; 2246 } 2247 } 2248 2249 cur = CIRCLEQ_NEXT(cur, glue); 2250 if ((cur != (void *) &form->sorted_fields) 2251 && (cur_row != cur->form_row)) { 2252 cur_row = cur->form_row; 2253 if (end_above == FALSE) { 2254 for (; above != CIRCLEQ_FIRST(&form->sorted_fields); 2255 above = CIRCLEQ_NEXT(above, glue)) { 2256 if (above->form_row != above_row) { 2257 above_row = above->form_row; 2258 break; 2259 } 2260 } 2261 } else if (above == NULL) { 2262 above = CIRCLEQ_FIRST(&form->sorted_fields); 2263 end_above = FALSE; 2264 above_row = above->form_row; 2265 } else 2266 end_above = FALSE; 2267 2268 if (end_below == FALSE) { 2269 while (below_row == below->form_row) { 2270 below = CIRCLEQ_NEXT(below, 2271 glue); 2272 if (below == 2273 (void *)&form->sorted_fields) { 2274 real_end = TRUE; 2275 end_below = TRUE; 2276 break; 2277 } 2278 } 2279 2280 if (below != (void *)&form->sorted_fields) 2281 below_row = below->form_row; 2282 } else if (real_end == FALSE) 2283 end_below = FALSE; 2284 2285 } 2286 } 2287 } 2288
Indexes created Wed Sep 24 05:09:52 GMT 2025