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

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  28 /*
  29  * $Id: test_addwstr.c,v 1.12 2014/08/02 17:24:55 tom Exp $
  30  *
  31  * Demonstrate the waddwstr() and wadd_wch functions.
  32  * Thomas Dickey - 2009/9/12
  33  *
  34  * Note: to provide inputs for *add_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 *add_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  * *addwstr() 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 #undef MvAddCh
  52 #undef MvAddStr
  53 #undef MvWAddCh
  54 #undef MvWAddStr
  55
  56 /* definitions to make it simpler to compare with inserts.c */
  57 #define AddNStr    addnwstr
  58 #define AddStr     addwstr
  59 #define MvAddNStr  (void) mvaddnwstr
  60 #define MvAddStr   (void) mvaddwstr
  61 #define MvWAddNStr (void) mvwaddnwstr
  62 #define MvWAddStr  (void) mvwaddwstr
  63 #define WAddNStr   waddnwstr
  64 #define WAddStr    waddwstr
  65
  66 #define MY_TABSIZE 8
  67
  68 typedef enum {
  69     oDefault = 0,
  70     oMove = 1,
  71     oWindow = 2,
  72     oMoveWindow = 3
  73 } Options;
  74
  75 static bool m_opt = FALSE;
  76 static bool w_opt = FALSE;
  77 static int n_opt = -1;
  78
  79 static void
  80 legend(WINDOW *win, int level, Options state, wchar_t *buffer, int length)
  81 {
  82     const char *showstate;
  83
  84     switch (state) {
  85     default:
  86     case oDefault:
  87         showstate = "";
  88         break;
  89     case oMove:
  90         showstate = " (mvXXX)";
  91         break;
  92     case oWindow:
  93         showstate = " (winXXX)";
  94         break;
  95     case oMoveWindow:
  96         showstate = " (mvwinXXX)";
  97         break;
  98     }
  99
 100     wmove(win, 0, 0);
 101     wprintw(win,
 102             "The Strings/Chars displays should match.  Enter any characters, except:\n");
 103     wprintw(win,
 104             "down-arrow or ^N to repeat on next line, ^W for inner window, ESC to exit.\n");
 105     wclrtoeol(win);
 106     wprintw(win, "Level %d,%s inserted %d characters <", level,
 107             showstate, length);
 108     waddwstr(win, buffer);
 109     waddstr(win, ">");
 110 }
 111
 112 static int
 113 ColOf(wchar_t *buffer, int length, int margin)
 114 {
 115     int n;
 116     int result;
 117
 118     for (n = 0, result = margin + 1; n < length; ++n) {
 119         int ch = buffer[n];
 120         switch (ch) {
 121         case '\n':
 122             /* actually newline should clear the remainder of the line
 123              * and move to the next line - but that seems a little awkward
 124              * in this example.
 125              */
 126         case '\r':
 127             result = 0;
 128             break;
 129         case '\b':
 130             if (result > 0)
 131                 --result;
 132             break;
 133         case '\t':
 134             result += (MY_TABSIZE - (result % MY_TABSIZE));
 135             break;
 136         case '\177':
 137             result += 2;
 138             break;
 139         default:
 140             result += wcwidth((wchar_t) ch);
 141             if (ch < 32)
 142                 ++result;
 143             break;
 144         }
 145     }
 146     return result;
 147 }
 148
 149 static int
 150 ConvertCh(chtype source, cchar_t *target)
 151 {
 152     wchar_t tmp_wchar[2];
 153
 154     tmp_wchar[0] = (wchar_t) source;
 155     tmp_wchar[1] = 0;
 156     if (setcchar(target, tmp_wchar, A_NORMAL, 0, (void *) 0) == ERR) {
 157         beep();
 158         return FALSE;
 159     }
 160     return TRUE;
 161 }
 162
 163 static int
 164 MvWAddCh(WINDOW *win, int y, int x, chtype ch)
 165 {
 166     int code;
 167     cchar_t tmp_cchar;
 168
 169     if (ConvertCh(ch, &tmp_cchar)) {
 170         code = mvwadd_wch(win, y, x, &tmp_cchar);
 171     } else {
 172         code = mvwaddch(win, y, x, ch);
 173     }
 174     return code;
 175 }
 176
 177 static int
 178 MvAddCh(int y, int x, chtype ch)
 179 {
 180     int code;
 181     cchar_t tmp_cchar;
 182
 183     if (ConvertCh(ch, &tmp_cchar)) {
 184         code = mvadd_wch(y, x, &tmp_cchar);
 185     } else {
 186         code = mvaddch(y, x, ch);
 187     }
 188     return code;
 189 }
 190
 191 static int
 192 WAddCh(WINDOW *win, chtype ch)
 193 {
 194     int code;
 195     cchar_t tmp_cchar;
 196
 197     if (ConvertCh(ch, &tmp_cchar)) {
 198         code = wadd_wch(win, &tmp_cchar);
 199     } else {
 200         code = waddch(win, ch);
 201     }
 202     return code;
 203 }
 204
 205 static int
 206 AddCh(chtype ch)
 207 {
 208     int code;
 209     cchar_t tmp_cchar;
 210
 211     if (ConvertCh(ch, &tmp_cchar)) {
 212         code = add_wch(&tmp_cchar);
 213     } else {
 214         code = addch(ch);
 215     }
 216     return code;
 217 }
 218
 219 #define LEN(n) ((length - (n) > n_opt) ? n_opt : (length - (n)))
 220 static void
 221 test_inserts(int level)
 222 {
 223     static bool first = TRUE;
 224
 225     int ch;
 226     int limit;
 227     int row = 1;
 228     int col;
 229     int row2, col2;
 230     int length;
 231     wchar_t buffer[BUFSIZ];
 232     WINDOW *look = 0;
 233     WINDOW *work = 0;
 234     WINDOW *show = 0;
 235     int margin = (2 * MY_TABSIZE) - 1;
 236     Options option = (Options) ((int) (m_opt ? oMove : oDefault)
 237                                 | (int) ((w_opt || (level > 0))
 238                                          ? oWindow : oDefault));
 239
 240     if (first) {
 241         static char cmd[80];
 242         setlocale(LC_ALL, "");
 243
 244         putenv(strcpy(cmd, "TABSIZE=8"));
 245
 246         initscr();
 247         (void) cbreak();        /* take input chars one at a time, no wait for \n */
 248         (void) noecho();        /* don't echo input */
 249         keypad(stdscr, TRUE);
 250
 251         /*
 252          * Show the characters inserted in color, to distinguish from those that
 253          * are shifted.
 254          */
 255         if (has_colors()) {
 256             start_color();
 257             init_pair(1, COLOR_WHITE, COLOR_BLUE);
 258         }
 259     }
 260
 261     limit = LINES - 5;
 262     if (level > 0) {
 263         look = newwin(limit, COLS - (2 * (level - 1)), 0, level - 1);
 264         work = newwin(limit - 2, COLS - (2 * level), 1, level);
 265         show = newwin(4, COLS, limit + 1, 0);
 266         box(look, 0, 0);
 267         wnoutrefresh(look);
 268         limit -= 2;
 269     } else {
 270         work = stdscr;
 271         show = derwin(stdscr, 4, COLS, limit + 1, 0);
 272     }
 273     keypad(work, TRUE);
 274
 275     for (col = margin + 1; col < COLS; col += MY_TABSIZE)
 276         MvWVLine(work, row, col, '.', limit - 2);
 277
 278     MvWVLine(work, row, margin, ACS_VLINE, limit - 2);
 279     MvWVLine(work, row, margin + 1, ACS_VLINE, limit - 2);
 280     limit /= 2;
 281
 282     (void) mvwaddstr(work, 1, 2, "String");
 283     (void) mvwaddstr(work, limit + 1, 2, "Chars");
 284     wnoutrefresh(work);
 285
 286     buffer[length = 0] = '\0';
 287     legend(show, level, option, buffer, length);
 288     wnoutrefresh(show);
 289
 290     doupdate();
 291
 292     if (has_colors()) {
 293         wbkgdset(work, (chtype) (COLOR_PAIR(1) | ' '));
 294     }
 295
 296     while ((ch = read_linedata(work)) != ERR && !isQUIT(ch)) {
 297         wmove(work, row, margin + 1);
 298         switch (ch) {
 299         case key_RECUR:
 300             test_inserts(level + 1);
 301
 302             if (look)
 303                 touchwin(look);
 304             touchwin(work);
 305             touchwin(show);
 306
 307             if (look)
 308                 wnoutrefresh(look);
 309             wnoutrefresh(work);
 310             wnoutrefresh(show);
 311
 312             doupdate();
 313             break;
 314         case key_NEWLINE:
 315             if (row < limit) {
 316                 ++row;
 317                 /* put the whole string in, all at once */
 318                 col2 = margin + 1;
 319                 switch (option) {
 320                 case oDefault:
 321                     if (n_opt > 1) {
 322                         for (col = 0; col < length; col += n_opt) {
 323                             col2 = ColOf(buffer, col, margin);
 324                             if (move(row, col2) != ERR) {
 325                                 AddNStr(buffer + col, LEN(col));
 326                             }
 327                         }
 328                     } else {
 329                         if (move(row, col2) != ERR) {
 330                             AddStr(buffer);
 331                         }
 332                     }
 333                     break;
 334                 case oMove:
 335                     if (n_opt > 1) {
 336                         for (col = 0; col < length; col += n_opt) {
 337                             col2 = ColOf(buffer, col, margin);
 338                             MvAddNStr(row, col2, buffer + col, LEN(col));
 339                         }
 340                     } else {
 341                         MvAddStr(row, col2, buffer);
 342                     }
 343                     break;
 344                 case oWindow:
 345                     if (n_opt > 1) {
 346                         for (col = 0; col < length; col += n_opt) {
 347                             col2 = ColOf(buffer, col, margin);
 348                             if (wmove(work, row, col2) != ERR) {
 349                                 WAddNStr(work, buffer + col, LEN(col));
 350                             }
 351                         }
 352                     } else {
 353                         if (wmove(work, row, col2) != ERR) {
 354                             WAddStr(work, buffer);
 355                         }
 356                     }
 357                     break;
 358                 case oMoveWindow:
 359                     if (n_opt > 1) {
 360                         for (col = 0; col < length; col += n_opt) {
 361                             col2 = ColOf(buffer, col, margin);
 362                             MvWAddNStr(work, row, col2, buffer + col, LEN(col));
 363                         }
 364                     } else {
 365                         MvWAddStr(work, row, col2, buffer);
 366                     }
 367                     break;
 368                 }
 369
 370                 /* do the corresponding single-character insertion */
 371                 row2 = limit + row;
 372                 for (col = 0; col < length; ++col) {
 373                     col2 = ColOf(buffer, col, margin);
 374                     switch (option) {
 375                     case oDefault:
 376                         if (move(row2, col2) != ERR) {
 377                             AddCh((chtype) buffer[col]);
 378                         }
 379                         break;
 380                     case oMove:
 381                         MvAddCh(row2, col2, (chtype) buffer[col]);
 382                         break;
 383                     case oWindow:
 384                         if (wmove(work, row2, col2) != ERR) {
 385                             WAddCh(work, (chtype) buffer[col]);
 386                         }
 387                         break;
 388                     case oMoveWindow:
 389                         MvWAddCh(work, row2, col2, (chtype) buffer[col]);
 390                         break;
 391                     }
 392                 }
 393             } else {
 394                 beep();
 395             }
 396             break;
 397         case KEY_BACKSPACE:
 398             ch = '\b';
 399             /* FALLTHRU */
 400         default:
 401             buffer[length++] = (wchar_t) ch;
 402             buffer[length] = '\0';
 403
 404             /* put the string in, one character at a time */
 405             col = ColOf(buffer, length - 1, margin);
 406             switch (option) {
 407             case oDefault:
 408                 if (move(row, col) != ERR) {
 409                     AddStr(buffer + length - 1);
 410                 }
 411                 break;
 412             case oMove:
 413                 MvAddStr(row, col, buffer + length - 1);
 414                 break;
 415             case oWindow:
 416                 if (wmove(work, row, col) != ERR) {
 417                     WAddStr(work, buffer + length - 1);
 418                 }
 419                 break;
 420             case oMoveWindow:
 421                 MvWAddStr(work, row, col, buffer + length - 1);
 422                 break;
 423             }
 424
 425             /* do the corresponding single-character insertion */
 426             switch (option) {
 427             case oDefault:
 428                 if (move(limit + row, col) != ERR) {
 429                     AddCh((chtype) ch);
 430                 }
 431                 break;
 432             case oMove:
 433                 MvAddCh(limit + row, col, (chtype) ch);
 434                 break;
 435             case oWindow:
 436                 if (wmove(work, limit + row, col) != ERR) {
 437                     WAddCh(work, (chtype) ch);
 438                 }
 439                 break;
 440             case oMoveWindow:
 441                 MvWAddCh(work, limit + row, col, (chtype) ch);
 442                 break;
 443             }
 444
 445             wnoutrefresh(work);
 446
 447             legend(show, level, option, buffer, length);
 448             wnoutrefresh(show);
 449
 450             doupdate();
 451             break;
 452         }
 453     }
 454     delwin(show);
 455     if (level > 0) {
 456         delwin(work);
 457         delwin(look);
 458     }
 459 }
 460
 461 static void
 462 usage(void)
 463 {
 464     static const char *tbl[] =
 465     {
 466         "Usage: inserts [options]"
 467         ,""
 468         ,"Options:"
 469         ,"  -f FILE read data from given file"
 470         ,"  -n NUM  limit string-inserts to NUM bytes on ^N replay"
 471         ,"  -m      perform wmove/move separately from insert-functions"
 472         ,"  -w      use window-parameter even when stdscr would be implied"
 473     };
 474     unsigned n;
 475     for (n = 0; n < SIZEOF(tbl); ++n)
 476         fprintf(stderr, "%s\n", tbl[n]);
 477     ExitProgram(EXIT_FAILURE);
 478 }
 479
 480 int
 481 main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
 482 {
 483     int ch;
 484
 485     setlocale(LC_ALL, "");
 486
 487     while ((ch = getopt(argc, argv, "f:mn:w")) != -1) {
 488         switch (ch) {
 489         case 'f':
 490             init_linedata(optarg);
 491             break;
 492         case 'm':
 493             m_opt = TRUE;
 494             break;
 495         case 'n':
 496             n_opt = atoi(optarg);
 497             if (n_opt == 0)
 498                 n_opt = -1;
 499             break;
 500         case 'w':
 501             w_opt = TRUE;
 502             break;
 503         default:
 504             usage();
 505             break;
 506         }
 507     }
 508     if (optind < argc)
 509         usage();
 510
 511     test_inserts(0);
 512     endwin();
 513     ExitProgram(EXIT_SUCCESS);
 514 }
 515 #else
 516 int
 517 main(void)
 518 {
 519     printf("This program requires the wide-ncurses library\n");
 520     ExitProgram(EXIT_FAILURE);
 521 }
 522 #endif