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

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  28 /*
  29  * $Id: test_getstr.c,v 1.9 2009/08/29 19:02:25 tom Exp $
  30  *
  31  * Author: Thomas E Dickey
  32  *
  33  * Demonstrate the getstr functions from the curses library.
  34
  35        int getstr(char *str);
  36        int getnstr(char *str, int n);
  37        int wgetstr(WINDOW *win, char *str);
  38        int wgetnstr(WINDOW *win, char *str, int n);
  39        int mvgetstr(int y, int x, char *str);
  40        int mvwgetstr(WINDOW *win, int y, int x, char *str);
  41        int mvgetnstr(int y, int x, char *str, int n);
  42        int mvwgetnstr(WINDOW *, int y, int x, char *str, int n);
  43  */
  44
  45 #include <test.priv.h>
  46
  47 #if HAVE_CHGAT
  48 /* Solaris SVr4 curses lacks wchgat, mvgetnstr, mvwgetnstr */
  49
  50 #define BASE_Y 6
  51 #define MAX_COLS 1024
  52
  53 typedef enum {
  54     eGetStr = 0,
  55     eGetNStr,
  56     eMvGetStr,
  57     eMvGetNStr,
  58     eMaxFlavor
  59 } Flavors;
  60
  61 static bool
  62 Quit(int ch)
  63 {
  64     return (ch == ERR || ch == 'q' || ch == QUIT || ch == ESCAPE);
  65 }
  66
  67 static int
  68 Remainder(WINDOW *txtwin)
  69 {
  70     int result = getmaxx(txtwin) - getcurx(txtwin);
  71     return (result > 0) ? result : 0;
  72 }
  73
  74 /*
  75  * Show a highlighted line in the place where input will happen.
  76  */
  77 static void
  78 ShowPrompt(WINDOW *txtwin, int limit)
  79 {
  80     wchgat(txtwin, limit, A_REVERSE, 0, NULL);
  81     wnoutrefresh(txtwin);
  82 }
  83
  84 static void
  85 MovePrompt(WINDOW *txtwin, int limit, int y, int x)
  86 {
  87     wchgat(txtwin, Remainder(txtwin), A_NORMAL, 0, NULL);
  88     wmove(txtwin, y, x);
  89     ShowPrompt(txtwin, limit);
  90 }
  91
  92 static int
  93 ShowFlavor(WINDOW *strwin, WINDOW *txtwin, int flavor, int limit)
  94 {
  95     const char *name = "?";
  96     bool limited = FALSE;
  97     bool wins = (txtwin != stdscr);
  98     int result;
  99
 100     switch (flavor) {
 101     case eGetStr:
 102         name = wins ? "wgetstr" : "getstr";
 103         break;
 104     case eGetNStr:
 105         limited = TRUE;
 106         name = wins ? "wgetnstr" : "getnstr";
 107         break;
 108     case eMvGetStr:
 109         name = wins ? "mvwgetstr" : "mvgetstr";
 110         break;
 111     case eMvGetNStr:
 112         limited = TRUE;
 113         name = wins ? "mvwgetnstr" : "mvgetnstr";
 114         break;
 115     case eMaxFlavor:
 116         break;
 117     }
 118
 119     wmove(strwin, 0, 0);
 120     werase(strwin);
 121
 122     if (limited) {
 123         wprintw(strwin, "%s(%d):", name, limit);
 124     } else {
 125         wprintw(strwin, "%s:", name);
 126     }
 127     result = limited ? limit : Remainder(txtwin);
 128     ShowPrompt(txtwin, result);
 129
 130     wnoutrefresh(strwin);
 131     return result;
 132 }
 133
 134 static int
 135 test_getstr(int level, char **argv, WINDOW *strwin)
 136 {
 137     WINDOW *txtbox = 0;
 138     WINDOW *txtwin = 0;
 139     FILE *fp;
 140     int ch;
 141     int rc;
 142     int txt_x = 0, txt_y = 0;
 143     int base_y;
 144     int flavor = 0;
 145     int limit = getmaxx(strwin) - 5;
 146     int actual;
 147
 148     char buffer[MAX_COLS];
 149
 150     if (argv[level] == 0) {
 151         beep();
 152         return FALSE;
 153     }
 154
 155     if (level > 1) {
 156         txtbox = newwin(LINES - BASE_Y, COLS - level, BASE_Y, level);
 157         box(txtbox, 0, 0);
 158         wnoutrefresh(txtbox);
 159
 160         txtwin = derwin(txtbox,
 161                         getmaxy(txtbox) - 2,
 162                         getmaxx(txtbox) - 2,
 163                         1, 1);
 164         base_y = 0;
 165     } else {
 166         txtwin = stdscr;
 167         base_y = BASE_Y;
 168     }
 169
 170     keypad(txtwin, TRUE);       /* enable keyboard mapping */
 171     (void) cbreak();            /* take input chars one at a time, no wait for \n */
 172     (void) noecho();            /* don't echo input */
 173
 174     txt_y = base_y;
 175     txt_x = 0;
 176     wmove(txtwin, txt_y, txt_x);
 177
 178     if ((fp = fopen(argv[level], "r")) != 0) {
 179         while ((ch = fgetc(fp)) != EOF) {
 180             if (waddch(txtwin, UChar(ch)) != OK) {
 181                 break;
 182             }
 183         }
 184         fclose(fp);
 185     } else {
 186         wprintw(txtwin, "Cannot open:\n%s", argv[1]);
 187     }
 188
 189     wmove(txtwin, txt_y, txt_x);
 190     actual = ShowFlavor(strwin, txtwin, flavor, limit);
 191     while (!Quit(ch = mvwgetch(txtwin, txt_y, txt_x))) {
 192         switch (ch) {
 193         case KEY_DOWN:
 194         case 'j':
 195             if (txt_y < getmaxy(txtwin) - 1) {
 196                 MovePrompt(txtwin, actual, ++txt_y, txt_x);
 197             } else {
 198                 beep();
 199             }
 200             break;
 201         case KEY_UP:
 202         case 'k':
 203             if (txt_y > base_y) {
 204                 MovePrompt(txtwin, actual, --txt_y, txt_x);
 205             } else {
 206                 beep();
 207             }
 208             break;
 209         case KEY_LEFT:
 210         case 'h':
 211             if (txt_x > 0) {
 212                 MovePrompt(txtwin, actual, txt_y, --txt_x);
 213             } else {
 214                 beep();
 215             }
 216             break;
 217         case KEY_RIGHT:
 218         case 'l':
 219             if (txt_x < getmaxx(txtwin) - 1) {
 220                 MovePrompt(txtwin, actual, txt_y, ++txt_x);
 221             } else {
 222                 beep();
 223             }
 224             break;
 225
 226         case 'w':
 227             test_getstr(level + 1, argv, strwin);
 228             if (txtbox != 0) {
 229                 touchwin(txtbox);
 230                 wnoutrefresh(txtbox);
 231             } else {
 232                 touchwin(txtwin);
 233                 wnoutrefresh(txtwin);
 234             }
 235             break;
 236
 237         case '-':
 238             if (limit > 0) {
 239                 actual = ShowFlavor(strwin, txtwin, flavor, --limit);
 240                 MovePrompt(txtwin, actual, txt_y, txt_x);
 241             } else {
 242                 beep();
 243             }
 244             break;
 245
 246         case '+':
 247             actual = ShowFlavor(strwin, txtwin, flavor, ++limit);
 248             MovePrompt(txtwin, actual, txt_y, txt_x);
 249             break;
 250
 251         case '<':
 252             if (flavor > 0) {
 253                 actual = ShowFlavor(strwin, txtwin, --flavor, limit);
 254                 MovePrompt(txtwin, actual, txt_y, txt_x);
 255             } else {
 256                 beep();
 257             }
 258             break;
 259
 260         case '>':
 261             if (flavor + 1 < eMaxFlavor) {
 262                 actual = ShowFlavor(strwin, txtwin, ++flavor, limit);
 263                 MovePrompt(txtwin, actual, txt_y, txt_x);
 264             } else {
 265                 beep();
 266             }
 267             break;
 268
 269         case ':':
 270             actual = ShowFlavor(strwin, txtwin, flavor, limit);
 271             *buffer = '\0';
 272             rc = ERR;
 273             echo();
 274             (void) wattrset(txtwin, A_REVERSE);
 275             switch (flavor) {
 276             case eGetStr:
 277                 if (txtwin != stdscr) {
 278                     wmove(txtwin, txt_y, txt_x);
 279                     rc = wgetstr(txtwin, buffer);
 280                 } else {
 281                     move(txt_y, txt_x);
 282                     rc = getstr(buffer);
 283                 }
 284                 break;
 285             case eGetNStr:
 286                 if (txtwin != stdscr) {
 287                     wmove(txtwin, txt_y, txt_x);
 288                     rc = wgetnstr(txtwin, buffer, limit);
 289                 } else {
 290                     move(txt_y, txt_x);
 291                     rc = getnstr(buffer, limit);
 292                 }
 293                 break;
 294             case eMvGetStr:
 295                 if (txtwin != stdscr) {
 296                     rc = mvwgetstr(txtwin, txt_y, txt_x, buffer);
 297                 } else {
 298                     rc = mvgetstr(txt_y, txt_x, buffer);
 299                 }
 300                 break;
 301             case eMvGetNStr:
 302                 if (txtwin != stdscr) {
 303                     rc = mvwgetnstr(txtwin, txt_y, txt_x, buffer, limit);
 304                 } else {
 305                     rc = mvgetnstr(txt_y, txt_x, buffer, limit);
 306                 }
 307                 break;
 308             case eMaxFlavor:
 309                 break;
 310             }
 311             noecho();
 312             (void) wattrset(txtwin, A_NORMAL);
 313             wprintw(strwin, "%d:%s", rc, buffer);
 314             wnoutrefresh(strwin);
 315             break;
 316         default:
 317             beep();
 318             break;
 319         }
 320         doupdate();
 321     }
 322     if (level > 1) {
 323         delwin(txtwin);
 324         delwin(txtbox);
 325     }
 326     return TRUE;
 327 }
 328
 329 int
 330 main(int argc, char *argv[])
 331 {
 332     WINDOW *chrbox;
 333     WINDOW *strwin;
 334
 335     setlocale(LC_ALL, "");
 336
 337     if (argc < 2) {
 338         fprintf(stderr, "usage: %s file\n", argv[0]);
 339         return EXIT_FAILURE;
 340     }
 341
 342     initscr();
 343
 344     chrbox = derwin(stdscr, BASE_Y, COLS, 0, 0);
 345     box(chrbox, 0, 0);
 346     wnoutrefresh(chrbox);
 347
 348     strwin = derwin(chrbox, 4, COLS - 2, 1, 1);
 349
 350     test_getstr(1, argv, strwin);
 351
 352     endwin();
 353     ExitProgram(EXIT_SUCCESS);
 354 }
 355
 356 #else
 357 int
 358 main(void)
 359 {
 360     printf("This program requires the curses chgat function\n");
 361     ExitProgram(EXIT_FAILURE);
 362 }
 363 #endif