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

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  28 /*
  29  * $Id: ins_wide.c,v 1.15 2010/12/12 00:20:14 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(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 = ((m_opt ? oMove : oDefault)
 232                       | ((w_opt || (level > 0)) ? oWindow : oDefault));
 233
 234     if (first) {
 235         static char cmd[80];
 236         setlocale(LC_ALL, "");
 237
 238         putenv(strcpy(cmd, "TABSIZE=8"));
 239
 240         initscr();
 241         (void) cbreak();        /* take input chars one at a time, no wait for \n */
 242         (void) noecho();        /* don't echo input */
 243         keypad(stdscr, TRUE);
 244     }
 245
 246     limit = LINES - 5;
 247     if (level > 0) {
 248         look = newwin(limit, COLS - (2 * (level - 1)), 0, level - 1);
 249         work = newwin(limit - 2, COLS - (2 * level), 1, level);
 250         show = newwin(4, COLS, limit + 1, 0);
 251         box(look, 0, 0);
 252         wnoutrefresh(look);
 253         limit -= 2;
 254     } else {
 255         work = stdscr;
 256         show = derwin(stdscr, 4, COLS, limit + 1, 0);
 257     }
 258     keypad(work, TRUE);
 259
 260     for (col = margin + 1; col < COLS; col += MY_TABSIZE)
 261         MvWVLine(work, row, col, '.', limit - 2);
 262
 263     MvWVLine(work, row, margin, ACS_VLINE, limit - 2);
 264     MvWVLine(work, row, margin + 1, ACS_VLINE, limit - 2);
 265     limit /= 2;
 266
 267     MvWAddStr(work, 1, 2, "String");
 268     MvWAddStr(work, limit + 1, 2, "Chars");
 269     wnoutrefresh(work);
 270
 271     buffer[length = 0] = '\0';
 272     legend(show, level, option, buffer, length);
 273     wnoutrefresh(show);
 274
 275     doupdate();
 276
 277     /*
 278      * Show the characters inserted in color, to distinguish from those that
 279      * are shifted.
 280      */
 281     if (has_colors()) {
 282         start_color();
 283         init_pair(1, COLOR_WHITE, COLOR_BLUE);
 284         wbkgdset(work, COLOR_PAIR(1) | ' ');
 285     }
 286
 287     while ((ch = read_linedata(work)) != ERR && !isQUIT(ch)) {
 288         wmove(work, row, margin + 1);
 289         switch (ch) {
 290         case key_RECUR:
 291             test_inserts(level + 1);
 292
 293             touchwin(look);
 294             touchwin(work);
 295             touchwin(show);
 296
 297             wnoutrefresh(look);
 298             wnoutrefresh(work);
 299             wnoutrefresh(show);
 300
 301             doupdate();
 302             break;
 303         case key_NEWLINE:
 304             if (row < limit) {
 305                 ++row;
 306                 /* put the whole string in, all at once */
 307                 col2 = margin + 1;
 308                 switch (option) {
 309                 case oDefault:
 310                     if (n_opt > 1) {
 311                         for (col = 0; col < length; col += n_opt) {
 312                             col2 = ColOf(buffer, col, margin);
 313                             if (move(row, col2) != ERR) {
 314                                 InsNStr(buffer + col, LEN(col));
 315                             }
 316                         }
 317                     } else {
 318                         if (move(row, col2) != ERR) {
 319                             InsStr(buffer);
 320                         }
 321                     }
 322                     break;
 323                 case oMove:
 324                     if (n_opt > 1) {
 325                         for (col = 0; col < length; col += n_opt) {
 326                             col2 = ColOf(buffer, col, margin);
 327                             MvInsNStr(row, col2, buffer + col, LEN(col));
 328                         }
 329                     } else {
 330                         MvInsStr(row, col2, buffer);
 331                     }
 332                     break;
 333                 case oWindow:
 334                     if (n_opt > 1) {
 335                         for (col = 0; col < length; col += n_opt) {
 336                             col2 = ColOf(buffer, col, margin);
 337                             if (wmove(work, row, col2) != ERR) {
 338                                 WInsNStr(work, buffer + col, LEN(col));
 339                             }
 340                         }
 341                     } else {
 342                         if (wmove(work, row, col2) != ERR) {
 343                             WInsStr(work, buffer);
 344                         }
 345                     }
 346                     break;
 347                 case oMoveWindow:
 348                     if (n_opt > 1) {
 349                         for (col = 0; col < length; col += n_opt) {
 350                             col2 = ColOf(buffer, col, margin);
 351                             MvWInsNStr(work, row, col2, buffer + col, LEN(col));
 352                         }
 353                     } else {
 354                         MvWInsStr(work, row, col2, buffer);
 355                     }
 356                     break;
 357                 }
 358
 359                 /* do the corresponding single-character insertion */
 360                 row2 = limit + row;
 361                 for (col = 0; col < length; ++col) {
 362                     col2 = ColOf(buffer, col, margin);
 363                     switch (option) {
 364                     case oDefault:
 365                         if (move(row2, col2) != ERR) {
 366                             InsCh((chtype) buffer[col]);
 367                         }
 368                         break;
 369                     case oMove:
 370                         MvInsCh(row2, col2, (chtype) buffer[col]);
 371                         break;
 372                     case oWindow:
 373                         if (wmove(work, row2, col2) != ERR) {
 374                             WInsCh(work, (chtype) buffer[col]);
 375                         }
 376                         break;
 377                     case oMoveWindow:
 378                         MvWInsCh(work, row2, col2, (chtype) buffer[col]);
 379                         break;
 380                     }
 381                 }
 382             } else {
 383                 beep();
 384             }
 385             break;
 386         default:
 387             buffer[length++] = ch;
 388             buffer[length] = '\0';
 389
 390             /* put the string in, one character at a time */
 391             col = ColOf(buffer, length - 1, margin);
 392             switch (option) {
 393             case oDefault:
 394                 if (move(row, col) != ERR) {
 395                     InsStr(buffer + length - 1);
 396                 }
 397                 break;
 398             case oMove:
 399                 MvInsStr(row, col, buffer + length - 1);
 400                 break;
 401             case oWindow:
 402                 if (wmove(work, row, col) != ERR) {
 403                     WInsStr(work, buffer + length - 1);
 404                 }
 405                 break;
 406             case oMoveWindow:
 407                 MvWInsStr(work, row, col, buffer + length - 1);
 408                 break;
 409             }
 410
 411             /* do the corresponding single-character insertion */
 412             switch (option) {
 413             case oDefault:
 414                 if (move(limit + row, col) != ERR) {
 415                     InsCh((chtype) ch);
 416                 }
 417                 break;
 418             case oMove:
 419                 MvInsCh(limit + row, col, (chtype) ch);
 420                 break;
 421             case oWindow:
 422                 if (wmove(work, limit + row, col) != ERR) {
 423                     WInsCh(work, (chtype) ch);
 424                 }
 425                 break;
 426             case oMoveWindow:
 427                 MvWInsCh(work, limit + row, col, (chtype) ch);
 428                 break;
 429             }
 430
 431             wnoutrefresh(work);
 432
 433             legend(show, level, option, buffer, length);
 434             wnoutrefresh(show);
 435
 436             doupdate();
 437             break;
 438         }
 439     }
 440     if (level > 0) {
 441         delwin(show);
 442         delwin(work);
 443         delwin(look);
 444     }
 445 }
 446
 447 static void
 448 usage(void)
 449 {
 450     static const char *tbl[] =
 451     {
 452         "Usage: inserts [options]"
 453         ,""
 454         ,"Options:"
 455         ,"  -f FILE read data from given file"
 456         ,"  -n NUM  limit string-inserts to NUM bytes on ^N replay"
 457         ,"  -m      perform wmove/move separately from insert-functions"
 458         ,"  -w      use window-parameter even when stdscr would be implied"
 459     };
 460     unsigned n;
 461     for (n = 0; n < SIZEOF(tbl); ++n)
 462         fprintf(stderr, "%s\n", tbl[n]);
 463     ExitProgram(EXIT_FAILURE);
 464 }
 465
 466 int
 467 main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
 468 {
 469     int ch;
 470
 471     setlocale(LC_ALL, "");
 472
 473     while ((ch = getopt(argc, argv, "f:mn:w")) != -1) {
 474         switch (ch) {
 475         case 'f':
 476             init_linedata(optarg);
 477             break;
 478         case 'm':
 479             m_opt = TRUE;
 480             break;
 481         case 'n':
 482             n_opt = atoi(optarg);
 483             if (n_opt == 0)
 484                 n_opt = -1;
 485             break;
 486         case 'w':
 487             w_opt = TRUE;
 488             break;
 489         default:
 490             usage();
 491             break;
 492         }
 493     }
 494     if (optind < argc)
 495         usage();
 496
 497     test_inserts(0);
 498     endwin();
 499     ExitProgram(EXIT_SUCCESS);
 500 }
 501 #else
 502 int
 503 main(void)
 504 {
 505     printf("This program requires the wide-ncurses library\n");
 506     ExitProgram(EXIT_FAILURE);
 507 }
 508 #endif