edit.c

   1
   2 /*
   3  * $Id: edit.c,v 1.55 2006/09/06 02:46:44 cduval Exp $
   4  *
   5  * by JH <jheinonen@users.sourceforge.net>
   6  *
   7  * Copyright (C) Jaakko Heinonen
   8  */
   9
  10 #include <string.h>
  11 #include <stdlib.h>
  12 #include <ctype.h>
  13 #include <assert.h>
  14 #include "abook_curses.h"
  15 #include "ui.h"
  16 #include "abook.h"
  17 #include "database.h"
  18 #include "gettext.h"
  19 #include "list.h"
  20 #include "edit.h"
  21 #include "misc.h"
  22 #include "views.h"
  23 #include "xmalloc.h"
  24 #ifdef HAVE_CONFIG_H
  25 #       include "config.h"
  26 #endif
  27
  28 /*
  29  * some extern variables
  30  */
  31
  32 extern int views_count;
  33
  34 WINDOW *editw;
  35
  36
  37 static void
  38 editor_tab(const int tab)
  39 {
  40         int i, j;
  41         int x_pos = 2; /* current x pos */
  42         char *tab_name;
  43
  44         mvwhline(editw, TABLINE + 1, 0, UI_HLINE_CHAR, EDITW_COLS);
  45
  46         for(i = 0; i < views_count; i++) {
  47                 view_info(i, &tab_name, NULL);
  48                 int width = strwidth(tab_name) + 5;
  49
  50                 if(x_pos + width + 1 > EDITW_COLS) {
  51                         statusline_addstr(_("Tab name too wide for screen"));
  52                         break;
  53                 }
  54
  55                 mvwaddch(editw,  TABLINE + 1, x_pos,  UI_TEE_CHAR);
  56                 mvwaddch(editw,  TABLINE + 1, x_pos + width - 2, UI_TEE_CHAR);
  57
  58                 mvwaddch(editw,  TABLINE, x_pos,  UI_ULCORNER_CHAR);
  59                 mvwaddch(editw,  TABLINE, x_pos + 1,  UI_LBOXLINE_CHAR);
  60                 mvwaddstr(editw, TABLINE, x_pos + 2,  tab_name);
  61                 mvwaddch(editw,  TABLINE, x_pos + width - 3, UI_RBOXLINE_CHAR);
  62                 mvwaddch(editw,  TABLINE, x_pos + width - 2, UI_URCORNER_CHAR);
  63
  64                 if(i == tab) {
  65                         mvwaddch(editw,  TABLINE + 1, x_pos, UI_LRCORNER_CHAR);
  66                         for(j = 0; j < width - 3; j++)
  67                                 mvwaddstr(editw,
  68                                         TABLINE + 1, x_pos + j + 1, " ");
  69                         mvwaddch(editw,  TABLINE + 1, x_pos + width - 2,
  70                                 UI_LLCORNER_CHAR);
  71                 }
  72                 x_pos += width;
  73         }
  74 }
  75
  76 void
  77 get_first_email(char *str, int item)
  78 {
  79         char *tmp, *emails = db_email_get(item);
  80
  81         if(!*emails) {
  82                 *str = 0;
  83                 return;
  84         }
  85
  86         strncpy(str, emails, MAX_EMAIL_LEN);
  87         free(emails);
  88         if( (tmp = strchr(str, ',')) )
  89                 *tmp = 0;
  90         else
  91                 str[MAX_EMAIL_LEN - 1] = 0;
  92 }
  93
  94 /* This only rolls emails from the 'email' field, not emails from any
  95  * field of type FIELD_EMAILS.
  96  * TODO: expand to ask for which field to roll if several are present? */
  97 static void
  98 roll_emails(int item, enum rotate_dir dir)
  99 {
 100         abook_list *emails = csv_to_abook_list(db_fget(item, EMAIL));
 101
 102         if(!emails)
 103                 return;
 104
 105         free(db_fget(item, EMAIL));
 106         abook_list_rotate(&emails, dir);
 107         db_fput(item, EMAIL, abook_list_to_csv(emails));
 108         abook_list_free(&emails);
 109 }
 110
 111 static void
 112 init_editor()
 113 {
 114         clear();
 115         editw = newwin(EDITW_LINES, EDITW_COLS, EDITW_TOP, EDITW_X);
 116         notimeout(editw, TRUE); /* handling of escape key */
 117
 118         refresh_statusline();
 119 }
 120
 121 enum {
 122         BACKUP_ITEM,
 123         RESTORE_ITEM,
 124         CLEAR_UNDO
 125 };
 126
 127 static int
 128 edit_undo(int item, int mode)
 129 {
 130         static list_item backup = NULL;
 131         static int backed_up_item = -1;
 132
 133         switch(mode) {
 134                 case CLEAR_UNDO:
 135                         if(backup) {
 136                                 item_empty(backup);
 137                                 item_free(&backup);
 138                         }
 139                         break;
 140                 case BACKUP_ITEM:
 141                         if(backup) {
 142                                 item_empty(backup);
 143                                 item_free(&backup);
 144                         }
 145                         backup = item_create();
 146                         item_duplicate(backup, db_item_get(item));
 147                         backed_up_item = item;
 148                         break;
 149                 case RESTORE_ITEM:
 150                         if(backup) {
 151                                 item_empty(db_item_get(backed_up_item));
 152                                 item_copy(db_item_get(backed_up_item), backup);
 153                                 item_free(&backup);
 154                                 return backed_up_item;
 155                         }
 156                         break;
 157                 default:
 158                         assert(0);
 159         }
 160         return item;
 161 }
 162
 163 static void
 164 close_editor()
 165 {
 166         edit_undo(-1, CLEAR_UNDO);
 167         delwin(editw);
 168         refresh_screen();
 169 }
 170
 171 static void
 172 print_editor_header(int item)
 173 {
 174         char *header;
 175         char email[MAX_EMAIL_LEN];
 176
 177         if((header = xmalloc(EDITW_COLS)) == NULL)
 178                 return;
 179
 180         get_first_email(email, item);
 181
 182         if(*email)
 183                 snprintf(header, EDITW_COLS, "%s <%s>",
 184                                 db_name_get(item),
 185                                 email);
 186         else
 187                 snprintf(header, EDITW_COLS, "%s", db_name_get(item));
 188
 189         mvwaddstr(editw, 0, (EDITW_COLS - strwidth(header)) / 2, header);
 190
 191         free(header);
 192 }
 193
 194 static void
 195 editor_print_data(int tab, int item)
 196 {
 197         int j = 1, nb;
 198         int y, x;
 199         abook_field_list *cur;
 200         char *str;
 201
 202         view_info(tab, NULL, &cur);
 203
 204         for(; cur; cur = cur->next) {
 205
 206                 if(j > 1) {
 207                         getyx(editw, y, x);
 208                         y++;
 209                 } else
 210                         y = FIELDS_START_Y;
 211
 212                 mvwprintw(editw, y, FIELDS_START_X, "%c - ",
 213                                 (j < 10) ? '0' + j : 'A' + j - 10);
 214                 mvwaddnstr(editw, y, FIELDS_START_X + 4, cur->field->name,
 215                                 bytes2width(cur->field->name,
 216                                         FIELDNAME_MAX_WIDTH));
 217                 mvwaddch(editw, y, TAB_COLON_POS, ':');
 218
 219                 if((cur->field->type == FIELD_EMAILS) ||
 220                                 (cur->field->type == FIELD_LIST)) {
 221                         abook_list *emails, *e;
 222
 223                         find_field_number(cur->field->key, &nb);
 224                         emails = csv_to_abook_list(db_fget_byid(item, nb));
 225
 226                         for(e = emails; e; e = e->next) {
 227                                 getyx(editw, y, x);
 228                                 mvwaddnstr(editw, y + 1, TAB_COLON_POS + 2,
 229                                                 e->data,
 230                                                 bytes2width(e->data,
 231                                                         FIELD_MAX_WIDTH));
 232                                 mvwaddch(editw, y + 1, TAB_COLON_POS,
 233                                                 UI_VLINE_CHAR);
 234                         }
 235                         if(emails) {
 236                                 mvwaddch(editw, y + 2, TAB_COLON_POS,
 237                                                 UI_LLCORNER_CHAR);
 238                                 mvwhline(editw, y + 2, TAB_COLON_POS + 1,
 239                                                 UI_HLINE_CHAR,
 240                                                 EDITW_COLS - TAB_COLON_POS - 2);
 241                         }
 242                         abook_list_free(&emails);
 243                 } else if(cur->field->type == FIELD_DATE) {
 244                         int day, month, year;
 245                         char buf[12];
 246
 247                         find_field_number(cur->field->key, &nb);
 248                         if((str = db_fget_byid(item, nb)) != NULL)
 249                                 strncpy(buf, str, sizeof(buf));
 250
 251                         if(str && parse_date_string(buf, &day, &month, &year)) {
 252                                 if(year)
 253                                         str = strdup_printf("%04d-%02d-%02d",
 254                                                 year, month, day);
 255                                 else
 256                                         str = strdup_printf("--%02d-%02d",
 257                                                 month, day);
 258                                 mvwaddnstr(editw, y, TAB_COLON_POS + 2, str,
 259                                         bytes2width(str, FIELD_MAX_WIDTH));
 260                                 free(str);
 261                         }
 262                 } else {
 263                         find_field_number(cur->field->key, &nb);
 264                         str = safe_str(db_fget_byid(item, nb));
 265                         mvwaddnstr(editw, y, TAB_COLON_POS + 2, str,
 266                                 bytes2width(str, FIELD_MAX_WIDTH));
 267                 }
 268
 269                 j++;
 270         }
 271 }
 272
 273 /*
 274  * function: change_field
 275  *
 276  * parameters:
 277  *  (char *msg)
 278  *   message to display as a prompt
 279  *  (char **field)
 280  *   a pointer to a pointer which will point a new string. if the latter
 281  *   pointer != NULL it will be freed (if user doesn't cancel)
 282  *  (size_t max_len)
 283  *   maximum length of field to read from user
 284  *
 285  * returns (int)
 286  *  a nonzero value if user has cancelled and zero if user has typed a
 287  *  valid string
 288  */
 289 static int
 290 change_field(char *msg, char **field, size_t max_len)
 291 {
 292         char *old;
 293         int ret = 0;
 294
 295         old = *field;
 296
 297         *field = ui_readline(msg, old, max_len - 1, 0);
 298
 299         if(*field) {
 300                 xfree(old);
 301                 if(!**field)
 302                         xfree(*field);
 303         } else {
 304                 *field = old;
 305                 ret = 1;
 306         }
 307
 308         clear_statusline();
 309         refresh_statusline();
 310
 311         return ret;
 312 }
 313
 314 static int
 315 change_name_field(char *msg, char **field, size_t max_len)
 316 {
 317         char *tmp;
 318         int ret;
 319
 320         tmp = xstrdup(*field);
 321         ret = change_field(msg, field, max_len);
 322
 323         if(*field == NULL || ! **field) {
 324                 xfree(*field);
 325                 *field = xstrdup(tmp);
 326         }
 327
 328         xfree(tmp);
 329
 330         return ret;
 331 }
 332
 333 static void
 334 fix_email_str(char *str)
 335 {
 336         for(; *str; str++)
 337                 *str = *str == ',' ? '_' : *str;
 338 }
 339
 340 static void
 341 edit_list(int item, int nb, int isemail)
 342 {
 343         char *field, *msg, *keys;
 344         abook_list *list, *e;
 345         int choice = 1, elem_count;
 346
 347         list = csv_to_abook_list(db_fget_byid(item, nb));
 348
 349         for(e = list, elem_count = 0; e; e = e->next, elem_count++)
 350                 ;
 351
 352         if(elem_count) {
 353                 keys = xstrndup(S_("keybindings_new_123456789|n123456789"),
 354                                 elem_count + 1);
 355                 msg = strdup_printf(_("Choose %s to modify (<1>%s%c%s%s."),
 356                                 isemail ? _("email") : _("item"),
 357                                 (elem_count > 1) ? "-<" : "",
 358                                 (elem_count > 1) ?  '0' + elem_count : ')',
 359                                 (elem_count > 1) ? ">)" : "",
 360                                 (elem_count < MAX_LIST_ITEMS) ?
 361                                         _(" or <n>ew") : ""
 362                                 );
 363                 choice = statusline_askchoice(
 364                                 msg,
 365                                 keys,
 366                                 (elem_count < MAX_LIST_ITEMS) ? 1 : 2
 367                                 );
 368                 free(keys);
 369                 free(msg);
 370         }
 371
 372         if(choice == 0)
 373                 return;
 374
 375         field = (choice > 1) ?
 376                 xstrdup(abook_list_get(list, choice - 2)->data) :
 377                 NULL;
 378
 379         if(change_field(isemail ? _("E-mail: ") : _("Item: "),
 380                                 &field, MAX_EMAIL_LEN))
 381                 return; /* user cancelled ( C-g ) */
 382
 383         /* TODO if list item contains commas, should use quotes instead */
 384         if(field)
 385                 fix_email_str(field);
 386
 387         if(choice == 1)
 388                 abook_list_append(&list, field);
 389         else
 390                 abook_list_replace(&list, choice - 2, field);
 391
 392         if(field)
 393                 xfree(field);
 394
 395         field = abook_list_to_csv(list);
 396         db_fput_byid(item, nb, field ? field : xstrdup(""));
 397         abook_list_free(&list);
 398 }
 399
 400 static int is_valid_date(const int day, const int month, const int year)
 401 {
 402         int valid = 1;
 403         int month_length[13] =
 404                 { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
 405
 406         /*
 407          * leap year
 408          */
 409         if ((!(year % 4)) && ((year % 100) || !(year % 400)))
 410                 month_length[2] = 29;
 411
 412         if (month < 1 || month > 12)
 413                 valid = 0;
 414         else if (day < 1 || day > month_length[month])
 415                 valid = 0;
 416         else if (year < 0) /* we don't accept negative year numbers */
 417                 valid = 0;
 418
 419         return valid;
 420 }
 421
 422 int
 423 parse_date_string(char *s, int *day, int *month, int *year)
 424 {
 425         int i = 0;
 426         char *p = s;
 427         assert(s && day && month && year);
 428
 429         if(*s == '-' && *s++ == '-') { /* omitted year */
 430                 *year = 0;
 431                 p = ++s;
 432                 i++;
 433         }
 434
 435         while(*s) {
 436                 if(isdigit(*s)) {
 437                         s++;
 438                         continue;
 439                 } else if(*s == '-') {
 440                         if(++i > 3)
 441                                 return FALSE;
 442                         *s++ = '\0';
 443                         switch(i) {
 444                                 case 1: *year = safe_atoi(p); break;
 445                                 case 2: *month = safe_atoi(p); break;
 446                         }
 447                         p = s;
 448                 } else
 449                 return FALSE;
 450         }
 451
 452         if (i != 2 || !*p)
 453                 return FALSE;
 454
 455         *day = atoi(p);
 456
 457         return is_valid_date(*day, *month, *year);
 458 }
 459
 460 static void
 461 edit_date(int item, int nb)
 462 {
 463         int i, date[3], old = FALSE;
 464         char buf[12], *s = db_fget_byid(item, nb);
 465         char *field[] = { N_("Day: "), N_("Month: "), N_("Year (optional): ") };
 466
 467         if(s) {
 468                 strncpy(buf, s, sizeof(buf));
 469                 old = parse_date_string(buf, &date[0], &date[1], &date[2]);
 470         }
 471
 472         for(i = 0; i < 3; i++) {
 473                 s = (old && date[i]) ? strdup_printf("%d", date[i]) : NULL;
 474                 if(change_field(gettext(field[i]), &s, 5))
 475                         return; /* user aborted with ^G */
 476
 477                 date[i] = (s && is_number(s)) ? atoi(s) : 0;
 478
 479                 if(!s) {
 480                         switch(i) {
 481                                 case 0: db_fput_byid(item, nb, NULL); /*delete*/
 482                                 case 1: /* fall through */ return;
 483                         }
 484                 } else
 485                         xfree(s);
 486         }
 487
 488         /* ISO 8601 date, of the YYYY-MM-DD or --MM-DD format */
 489         if(is_valid_date(date[0], date[1], date[2])) {
 490                 if(date[2])
 491                         s = strdup_printf("%04d-%02d-%02d",
 492                                 date[2], date[1], date[0]);
 493                 else
 494                         s = strdup_printf("--%02d-%02d", date[1], date[0]);
 495
 496                 db_fput_byid(item, nb, xstrdup(s));
 497         } else
 498                 statusline_msg(_("Invalid date"));
 499 }
 500
 501 /* input range: 1-9A-Z
 502  * output range: 0-34 */
 503 static int
 504 key_to_field_number(char c)
 505 {
 506         int n = c - '1';
 507         if(n >= 0 && n < 9)
 508                 return n;
 509
 510         n = c - 'A' + 9;
 511         if(n > 8 && n < 35)
 512                 return n;
 513
 514         return -1;
 515 }
 516
 517 static void
 518 edit_field(int tab, char c, int item_number)
 519 {
 520         int i = 0, number, idx;
 521         char *msg;
 522         abook_field_list *f;
 523         list_item item;
 524
 525         if((number = key_to_field_number(c)) < 0)
 526                 return;
 527
 528         edit_undo(item_number, BACKUP_ITEM);
 529
 530         view_info(tab, NULL, &f);
 531
 532         while(1) {
 533                 if(!f)
 534                         return;
 535
 536                 if(i == number)
 537                         break;
 538
 539                 f = f->next;
 540                 i++;
 541         }
 542
 543         find_field_number(f->field->key, &idx);
 544
 545         switch(f->field->type) {
 546                 case FIELD_STRING:
 547                         msg = strdup_printf("%s: ", f->field->name);
 548                         item = db_item_get(item_number);
 549                         if(strcmp(f->field->key, "name") == 0)
 550                                 change_name_field(msg,&item[idx],MAX_FIELD_LEN);
 551                         else
 552                                 change_field(msg,&item[idx],MAX_FIELD_LEN);
 553                         free(msg);
 554                         break;
 555                 case FIELD_LIST:
 556                         edit_list(item_number, idx, 0);
 557                         break;
 558                 case FIELD_EMAILS:
 559                         edit_list(item_number, idx, 1);
 560                         break;
 561                 case FIELD_DATE:
 562                         edit_date(item_number, idx);
 563                         return;
 564                 default:
 565                         assert(0);
 566         }
 567 }
 568
 569 static int
 570 edit_loop(int item)
 571 {
 572         static int tab = 0; /* first tab */
 573         int c;
 574
 575         werase(editw);
 576         headerline(gettext(EDITOR_HELPLINE));
 577         refresh_statusline();
 578         print_editor_header(item);
 579         editor_tab(tab);
 580         editor_print_data(tab, item);
 581         wmove(editw, EDITW_LINES - 1, EDITW_COLS - 1);
 582
 583         refresh();
 584         wrefresh(editw);
 585
 586         c = getch();
 587         if(c == '\033') {
 588                 statusline_addstr("ESC-");
 589                 c = getch();
 590                 clear_statusline();
 591
 592                 /* Escaped bindings */
 593                 switch(c) {
 594                         case 'r': roll_emails(item, ROTATE_RIGHT); break;
 595                         default: break;
 596                 }
 597
 598                 return item;
 599         }
 600
 601         /* No uppercase nor numeric key should be used in this menu,
 602          * as they are reserved for field selection */
 603         switch(c) {
 604                 case 'h':
 605                 case KEY_LEFT: tab = tab == 0 ? views_count - 1 : tab - 1;
 606                                break;
 607                 case 'l':
 608                 case KEY_RIGHT: tab = tab == views_count - 1 ? 0 : tab + 1;
 609                                 break;
 610                 case KEY_UP:
 611                 case '<':
 612                 case 'k': if(is_valid_item(item - 1)) item--; break;
 613                 case KEY_DOWN:
 614                 case '>':
 615                 case 'j': if(is_valid_item(item + 1)) item++; break;
 616                 case 'r': roll_emails(item, ROTATE_LEFT); break;
 617                 case '?': display_help(HELP_EDITOR); break;
 618                 case 'u': item = edit_undo(item, RESTORE_ITEM); break;
 619                 case 'm': launch_mutt(item); clearok(stdscr, 1); break;
 620                 case 'v': launch_wwwbrowser(item); clearok(stdscr, 1); break;
 621                 case 12 : clearok(stdscr, 1); break; /* ^L (refresh screen) */
 622                 case 'q': return -1;
 623                 default: edit_field(tab, c, item);
 624         }
 625
 626         return item;
 627 }
 628
 629 void
 630 edit_item(int item)
 631 {
 632         if(item < 0) {
 633                 if(list_get_curitem() < 0)
 634                         return;
 635                 else
 636                         item = list_get_curitem();
 637         }
 638
 639         init_editor();
 640
 641         while((item = edit_loop(item)) >= 0)
 642                 list_set_curitem(item); /* this is not very clean way to go */
 643
 644         close_editor();
 645 }
 646
 647 void
 648 add_item()
 649 {
 650         char *field = NULL;
 651         list_item item = item_create();
 652
 653         change_field(_("Name: "), &field, MAX_FIELD_LEN);
 654
 655         if( field == NULL )
 656                 return;
 657
 658         item_fput(item, NAME, field);
 659
 660         add_item2database(item);
 661         item_free(&item);
 662
 663         list_set_curitem(last_item());
 664
 665         edit_item(last_item());
 666 }
 667