release/src/router/libncurses/test/ins_wide.c

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  28 /*
  29  * $Id: ins_wide.c,v 1.21 2014/08/02 17:24:55 tom Exp $
  30  *
  31  * Demonstrate the wins_wstr() and wins_wch functions.
  32  * Thomas Dickey - 2002/11/23
  33  *
  34  * Note: to provide inputs for *ins_wch(), we use setcchar().  A quirk of the
  35  * X/Open definition for that function is that the string contains no
  36  * characters with negative width.  Any control character (such as tab) falls
  37  * into that category.  So it follows that *ins_wch() cannot render a tab
  38  * character because there is no legal way to construct a cchar_t containing
  39  * one.  X/Open does not document this, and it would be logical to assume that
  40  * *ins_wstr() has the same limitation, but it uses a wchar_t string directly,
  41  * and does not document how tabs are handled.
  42  */
  43
  44 #include <test.priv.h>
  45
  46 #if USE_WIDEC_SUPPORT
  47
  48 #define WIDE_LINEDATA
  49 #include <linedata.h>
  50
  51 /* definitions to make it simpler to compare with inserts.c */
  52 #define InsNStr    ins_nwstr
  53 #define InsStr     ins_wstr
  54 #define MvInsNStr  (void) mvins_nwstr
  55 #define MvInsStr   (void) mvins_wstr
  56 #define MvWInsNStr (void) mvwins_nwstr
  57 #define MvWInsStr  (void) mvwins_wstr
  58 #define WInsNStr   wins_nwstr
  59 #define WInsStr    wins_wstr
  60
  61 #define MY_TABSIZE 8
  62
  63 typedef enum {
  64     oDefault = 0,
  65     oMove = 1,
  66     oWindow = 2,
  67     oMoveWindow = 3
  68 } Options;
  69
  70 static bool m_opt = FALSE;
  71 static bool w_opt = FALSE;
  72 static int n_opt = -1;
  73
  74 static void
  75 legend(WINDOW *win, int level, Options state, wchar_t *buffer, int length)
  76 {
  77     const char *showstate;
  78
  79     switch (state) {
  80     default:
  81     case oDefault:
  82         showstate = "";
  83         break;
  84     case oMove:
  85         showstate = " (mvXXX)";
  86         break;
  87     case oWindow:
  88         showstate = " (winXXX)";
  89         break;
  90     case oMoveWindow:
  91         showstate = " (mvwinXXX)";
  92         break;
  93     }
  94
  95     wmove(win, 0, 0);
  96     wprintw(win,
  97             "The Strings/Chars displays should match.  Enter any characters, except:\n");
  98     wprintw(win,
  99             "down-arrow or ^N to repeat on next line, ^W for inner window, ESC to exit.\n");
 100     wclrtoeol(win);
 101     wprintw(win, "Level %d,%s inserted %d characters <", level,
 102             showstate, length);
 103     waddwstr(win, buffer);
 104     waddstr(win, ">");
 105 }
 106
 107 static int
 108 ColOf(wchar_t *buffer, int length, int margin)
 109 {
 110     int n;
 111     int result;
 112
 113     for (n = 0, result = margin + 1; n < length; ++n) {
 114         int ch = buffer[n];
 115         switch (ch) {
 116         case '\n':
 117             /* actually newline should clear the remainder of the line
 118              * and move to the next line - but that seems a little awkward
 119              * in this example.
 120              */
 121         case '\r':
 122             result = 0;
 123             break;
 124         case '\b':
 125             if (result > 0)
 126                 --result;
 127             break;
 128         case '\t':
 129             result += (MY_TABSIZE - (result % MY_TABSIZE));
 130             break;
 131         case '\177':
 132             result += 2;
 133             break;
 134         default:
 135             result += wcwidth((wchar_t) ch);
 136             if (ch < 32)
 137                 ++result;
 138             break;
 139         }
 140     }
 141     return result;
 142 }
 143
 144 static int
 145 ConvertCh(chtype source, cchar_t *target)
 146 {
 147     wchar_t tmp_wchar[2];
 148
 149     tmp_wchar[0] = (wchar_t) source;
 150     tmp_wchar[1] = 0;
 151     if (setcchar(target, tmp_wchar, A_NORMAL, 0, (void *) 0) == ERR) {
 152         beep();
 153         return FALSE;
 154     }
 155     return TRUE;
 156 }
 157
 158 static int
 159 MvWInsCh(WINDOW *win, int y, int x, chtype ch)
 160 {
 161     int code;
 162     cchar_t tmp_cchar;
 163
 164     if (ConvertCh(ch, &tmp_cchar)) {
 165         code = mvwins_wch(win, y, x, &tmp_cchar);
 166     } else {
 167         code = mvwinsch(win, y, x, ch);
 168     }
 169     return code;
 170 }
 171
 172 static int
 173 MvInsCh(int y, int x, chtype ch)
 174 {
 175     int code;
 176     cchar_t tmp_cchar;
 177
 178     if (ConvertCh(ch, &tmp_cchar)) {
 179         code = mvins_wch(y, x, &tmp_cchar);
 180     } else {
 181         code = mvinsch(y, x, ch);
 182     }
 183     return code;
 184 }
 185
 186 static int
 187 WInsCh(WINDOW *win, chtype ch)
 188 {
 189     int code;
 190     cchar_t tmp_cchar;
 191
 192     if (ConvertCh(ch, &tmp_cchar)) {
 193         code = wins_wch(win, &tmp_cchar);
 194     } else {
 195         code = winsch(win, ch);
 196     }
 197     return code;
 198 }
 199
 200 static int
 201 InsCh(chtype ch)
 202 {
 203     int code;
 204     cchar_t tmp_cchar;
 205
 206     if (ConvertCh(ch, &tmp_cchar)) {
 207         code = ins_wch(&tmp_cchar);
 208     } else {
 209         code = insch(ch);
 210     }
 211     return code;
 212 }
 213
 214 #define LEN(n) ((length - (n) > n_opt) ? n_opt : (length - (n)))
 215 static void
 216 test_inserts(int level)
 217 {
 218     static bool first = TRUE;
 219
 220     int ch;
 221     int limit;
 222     int row = 1;
 223     int col;
 224     int row2, col2;
 225     int length;
 226     wchar_t buffer[BUFSIZ];
 227     WINDOW *look = 0;
 228     WINDOW *work = 0;
 229     WINDOW *show = 0;
 230     int margin = (2 * MY_TABSIZE) - 1;
 231     Options option = (Options) ((int) (m_opt ? oMove : oDefault)
 232                                 | (int) ((w_opt || (level > 0))
 233                                          ? oWindow : oDefault));
 234
 235     if (first) {
 236         static char cmd[80];
 237         setlocale(LC_ALL, "");
 238
 239         putenv(strcpy(cmd, "TABSIZE=8"));
 240
 241         initscr();
 242         (void) cbreak();        /* take input chars one at a time, no wait for \n */
 243         (void) noecho();        /* don't echo input */
 244         keypad(stdscr, TRUE);
 245
 246         /*
 247          * Show the characters inserted in color, to distinguish from those
 248          * that are shifted.
 249          */
 250         if (has_colors()) {
 251             start_color();
 252             init_pair(1, COLOR_WHITE, COLOR_BLUE);
 253         }
 254     }
 255
 256     limit = LINES - 5;
 257     if (level > 0) {
 258         look = newwin(limit, COLS - (2 * (level - 1)), 0, level - 1);
 259         work = newwin(limit - 2, COLS - (2 * level), 1, level);
 260         show = newwin(4, COLS, limit + 1, 0);
 261         box(look, 0, 0);
 262         wnoutrefresh(look);
 263         limit -= 2;
 264     } else {
 265         work = stdscr;
 266         show = derwin(stdscr, 4, COLS, limit + 1, 0);
 267     }
 268     keypad(work, TRUE);
 269
 270     for (col = margin + 1; col < COLS; col += MY_TABSIZE)
 271         MvWVLine(work, row, col, '.', limit - 2);
 272
 273     MvWVLine(work, row, margin, ACS_VLINE, limit - 2);
 274     MvWVLine(work, row, margin + 1, ACS_VLINE, limit - 2);
 275     limit /= 2;
 276
 277     MvWAddStr(work, 1, 2, "String");
 278     MvWAddStr(work, limit + 1, 2, "Chars");
 279     wnoutrefresh(work);
 280
 281     buffer[length = 0] = '\0';
 282     legend(show, level, option, buffer, length);
 283     wnoutrefresh(show);
 284
 285     doupdate();
 286
 287     if (has_colors()) {
 288         wbkgdset(work, (chtype) (COLOR_PAIR(1) | ' '));
 289     }
 290
 291     while ((ch = read_linedata(work)) != ERR && !isQUIT(ch)) {
 292         wmove(work, row, margin + 1);
 293         switch (ch) {
 294         case key_RECUR:
 295             test_inserts(level + 1);
 296
 297             if (look)
 298                 touchwin(look);
 299             touchwin(work);
 300             touchwin(show);
 301
 302             if (look)
 303                 wnoutrefresh(look);
 304             wnoutrefresh(work);
 305             wnoutrefresh(show);
 306
 307             doupdate();
 308             break;
 309         case key_NEWLINE:
 310             if (row < limit) {
 311                 ++row;
 312                 /* put the whole string in, all at once */
 313                 col2 = margin + 1;
 314                 switch (option) {
 315                 case oDefault:
 316                     if (n_opt > 1) {
 317                         for (col = 0; col < length; col += n_opt) {
 318                             col2 = ColOf(buffer, col, margin);
 319                             if (move(row, col2) != ERR) {
 320                                 InsNStr(buffer + col, LEN(col));
 321                             }
 322                         }
 323                     } else {
 324                         if (move(row, col2) != ERR) {
 325                             InsStr(buffer);
 326                         }
 327                     }
 328                     break;
 329                 case oMove:
 330                     if (n_opt > 1) {
 331                         for (col = 0; col < length; col += n_opt) {
 332                             col2 = ColOf(buffer, col, margin);
 333                             MvInsNStr(row, col2, buffer + col, LEN(col));
 334                         }
 335                     } else {
 336                         MvInsStr(row, col2, buffer);
 337                     }
 338                     break;
 339                 case oWindow:
 340                     if (n_opt > 1) {
 341                         for (col = 0; col < length; col += n_opt) {
 342                             col2 = ColOf(buffer, col, margin);
 343                             if (wmove(work, row, col2) != ERR) {
 344                                 WInsNStr(work, buffer + col, LEN(col));
 345                             }
 346                         }
 347                     } else {
 348                         if (wmove(work, row, col2) != ERR) {
 349                             WInsStr(work, buffer);
 350                         }
 351                     }
 352                     break;
 353                 case oMoveWindow:
 354                     if (n_opt > 1) {
 355                         for (col = 0; col < length; col += n_opt) {
 356                             col2 = ColOf(buffer, col, margin);
 357                             MvWInsNStr(work, row, col2, buffer + col, LEN(col));
 358                         }
 359                     } else {
 360                         MvWInsStr(work, row, col2, buffer);
 361                     }
 362                     break;
 363                 }
 364
 365                 /* do the corresponding single-character insertion */
 366                 row2 = limit + row;
 367                 for (col = 0; col < length; ++col) {
 368                     col2 = ColOf(buffer, col, margin);
 369                     switch (option) {
 370                     case oDefault:
 371                         if (move(row2, col2) != ERR) {
 372                             InsCh((chtype) buffer[col]);
 373                         }
 374                         break;
 375                     case oMove:
 376                         MvInsCh(row2, col2, (chtype) buffer[col]);
 377                         break;
 378                     case oWindow:
 379                         if (wmove(work, row2, col2) != ERR) {
 380                             WInsCh(work, (chtype) buffer[col]);
 381                         }
 382                         break;
 383                     case oMoveWindow:
 384                         MvWInsCh(work, row2, col2, (chtype) buffer[col]);
 385                         break;
 386                     }
 387                 }
 388             } else {
 389                 beep();
 390             }
 391             break;
 392         default:
 393             buffer[length++] = (wchar_t) ch;
 394             buffer[length] = '\0';
 395
 396             /* put the string in, one character at a time */
 397             col = ColOf(buffer, length - 1, margin);
 398             switch (option) {
 399             case oDefault:
 400                 if (move(row, col) != ERR) {
 401                     InsStr(buffer + length - 1);
 402                 }
 403                 break;
 404             case oMove:
 405                 MvInsStr(row, col, buffer + length - 1);
 406                 break;
 407             case oWindow:
 408                 if (wmove(work, row, col) != ERR) {
 409                     WInsStr(work, buffer + length - 1);
 410                 }
 411                 break;
 412             case oMoveWindow:
 413                 MvWInsStr(work, row, col, buffer + length - 1);
 414                 break;
 415             }
 416
 417             /* do the corresponding single-character insertion */
 418             switch (option) {
 419             case oDefault:
 420                 if (move(limit + row, col) != ERR) {
 421                     InsCh((chtype) ch);
 422                 }
 423                 break;
 424             case oMove:
 425                 MvInsCh(limit + row, col, (chtype) ch);
 426                 break;
 427             case oWindow:
 428                 if (wmove(work, limit + row, col) != ERR) {
 429                     WInsCh(work, (chtype) ch);
 430                 }
 431                 break;
 432             case oMoveWindow:
 433                 MvWInsCh(work, limit + row, col, (chtype) ch);
 434                 break;
 435             }
 436
 437             wnoutrefresh(work);
 438
 439             legend(show, level, option, buffer, length);
 440             wnoutrefresh(show);
 441
 442             doupdate();
 443             break;
 444         }
 445     }
 446     if (level > 0) {
 447         delwin(work);
 448         delwin(look);
 449     }
 450     delwin(show);
 451 }
 452
 453 static void
 454 usage(void)
 455 {
 456     static const char *tbl[] =
 457     {
 458         "Usage: inserts [options]"
 459         ,""
 460         ,"Options:"
 461         ,"  -f FILE read data from given file"
 462         ,"  -n NUM  limit string-inserts to NUM bytes on ^N replay"
 463         ,"  -m      perform wmove/move separately from insert-functions"
 464         ,"  -w      use window-parameter even when stdscr would be implied"
 465     };
 466     unsigned n;
 467     for (n = 0; n < SIZEOF(tbl); ++n)
 468         fprintf(stderr, "%s\n", tbl[n]);
 469     ExitProgram(EXIT_FAILURE);
 470 }
 471
 472 int
 473 main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
 474 {
 475     int ch;
 476
 477     setlocale(LC_ALL, "");
 478
 479     while ((ch = getopt(argc, argv, "f:mn:w")) != -1) {
 480         switch (ch) {
 481         case 'f':
 482             init_linedata(optarg);
 483             break;
 484         case 'm':
 485             m_opt = TRUE;
 486             break;
 487         case 'n':
 488             n_opt = atoi(optarg);
 489             if (n_opt == 0)
 490                 n_opt = -1;
 491             break;
 492         case 'w':
 493             w_opt = TRUE;
 494             break;
 495         default:
 496             usage();
 497             break;
 498         }
 499     }
 500     if (optind < argc)
 501         usage();
 502
 503     test_inserts(0);
 504     endwin();
 505     ExitProgram(EXIT_SUCCESS);
 506 }
 507 #else
 508 int
 509 main(void)
 510 {
 511     printf("This program requires the wide-ncurses library\n");
 512     ExitProgram(EXIT_FAILURE);
 513 }
 514 #endif