Пример #1
0
void puttext(int left, int top, int right, int bottom, unsigned char *str)
{
    int orig_y, orig_x;
    attr_t attrs;
    short pair;
    getyx(stdscr, orig_y, orig_x);
    attr_get(&attrs, &pair, NULL);
    for (int y = top - 1; y <= bottom - 1; y++)
    {
        for (int x = left - 1; x <= right - 1; x++)
        {
            unsigned char chr = *str++;
            unsigned char col = *str++;
            wchar_t w = cp437[chr];
            if (w == 0) w = (wchar_t)' ';
            textcolor(col);
            mvaddnwstr(y, x, &w, 1);
        }
    }
    attr_set(attrs, pair, NULL);
    move(orig_y, orig_x);
}
Пример #2
0
/* Among other things,  'newtest' demonstrates how to make a Win32a
PDCurses app that is a for-real,  "pure Windows" version (instead of
a console application).  Doing this is quite easy,  and has certain
advantages.  If the app is invoked from a command prompt,  the only
difference you'll see is that the app runs separately (that is,  you
can continue to use the command prompt,  switching between it,  your
PDCurses/Win32a app,  and other processes).  Which is the main reason
I did it;  it meant that I could invoke a PDCurses-based text editor,
for example,  and still have use of the command line.

   (NOTE that,  for reasons I don't actually understand,  this happens
when the Visual C++ compiler is used.  With MinGW or OpenWatcom,  it's
still "really" a console app.)

   To do it,  we ensure that the usual main() function has an alternative
dummy_main() form,  taking the same arguments as main().  We add a
WinMain() function,  whose sole purpose is to reformulate lpszCmdLine
into argc/argv form,  and pass it on to dummy_main().  And,  of course,
we can switch back to a "normal" console app by removing the above
#define PURE_WINDOWS_VERSION line.             */

#ifdef PURE_WINDOWS_VERSION
#undef MOUSE_MOVED
#include <windows.h>

int dummy_main( int argc, char **argv);

int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    LPSTR lpszCmdLine, int nCmdShow)
{
   char *argv[30];
   int i, argc = 1;

   argv[0] = "newtest";
   for( i = 0; lpszCmdLine[i]; i++)
       if( lpszCmdLine[i] != ' ' && (!i || lpszCmdLine[i - 1] == ' '))
          argv[argc++] = lpszCmdLine + i;

   for( i = 0; lpszCmdLine[i]; i++)
       if( lpszCmdLine[i] == ' ')
          lpszCmdLine[i] = '\0';

   return dummy_main( argc, (char **)argv);
}

int dummy_main( int argc, char **argv)
#else       /* "usual",  console-app version: */
int main( int argc, char **argv)
#endif
{
    int quit = 0, i,  use_slk = 1;
    int fmt = 0xa;
    bool blink_state = FALSE;
    int cursor_state_1 = 2, cursor_state_2 = 3;
    int show_slk_index_line = 0;
    int redraw = 1;
    unsigned extra_character_to_show = 0;
#ifdef PDC_WIDE
    unsigned unicode_offset = 0x80;
#endif

/*  setlocale(LC_ALL, ".utf8");     */
    ttytype[0] = 25;   ttytype[1] = 90;         /* Allow 25 to 90 lines... */
    ttytype[2] = 80;   ttytype[3] = (char)200;  /* ...and 80 to 200 columns */
         /* (This program gets weird artifacts when smaller than 25x80.) */
    for( i = 1; i < argc; i++)
        if( argv[i][0] == '-')
            switch( argv[i][1])
            {
                case 's':
                    use_slk = 0;
                    break;
                case 'l':
                    setlocale( LC_ALL, argv[i] + 2);
                    break;
                case 'e':
                    sscanf( argv[i] + 2, "%x", &extra_character_to_show);
                    break;
                case 'f':
                    sscanf( argv[i] + 2, "%x", (unsigned *)&fmt);
                    break;
                case 'i':
                    show_slk_index_line = 1;
                    break;
                case 'r':     /* allow user-resizable windows */
                    {
                        int min_lines, max_lines, min_cols, max_cols;

                        if( sscanf( argv[i] + 2, "%d,%d,%d,%d",
                                       &min_lines, &max_lines,
                                       &min_cols, &max_cols) == 4)
                        {
                            ttytype[0] = min_lines;
                            ttytype[1] = max_lines;
                            ttytype[2] = min_cols;
                            ttytype[3] = max_cols;
                        }
                    }
                    break;
                case 'd':     /* set window size before initscr */
                    {
                        int n_lines, n_cols;

                        if( sscanf( argv[i] + 2, "%d,%d", &n_lines,
                                    &n_cols) == 2)
                            resize_term( n_lines, n_cols);
                    }
                    break;
#ifdef PDC_WIDE
                case 'u':
                    sscanf( argv[i] + 2, "%x", &unicode_offset);
                    break;
#endif
                default:
                    printf( "Option '%s' unrecognized\n", argv[i]);
                    break;
            }
    if( use_slk)
       slk_init( show_slk_index_line ? 3 : 0);
    Xinitscr(argc, argv);
    if( use_slk)
       slk_setup( show_slk_index_line ? -fmt : fmt);

    start_color();

# if defined(NCURSES_VERSION) || (defined(PDC_BUILD) && PDC_BUILD > 3000)
    use_default_colors();
# endif
    cbreak();
    noecho();
    clear();
    refresh();
#ifdef __PDCURSES__
    PDC_set_title( "NewTest: tests various PDCurses features");
#endif
    keypad( stdscr, TRUE);
    init_pair( 1, 15, COLOR_BLACK);
    init_pair( 2, COLOR_BLACK, COLOR_YELLOW);

    mousemask( ALL_MOUSE_EVENTS, NULL);
    attrset( COLOR_PAIR( 1));
    while( !quit)
    {
        char buff[40];
        const int xmax = getmaxx( stdscr);
        const int ymax = getmaxy( stdscr);
        int color_block_start = 54, c;
        int color_block_cols = (xmax - color_block_start) / 2;
        const int color_block_lines = 19;
        const char *cursor_state_text[N_CURSORS] = {
                  "Invisible (click to change) ",
                  "Underscore (click to change)",
                  "Block (click to change)     ",
                  "Outline (click to change)   ",
                  "Caret (click to change)     ",
                  "Half-block (click to change)",
                  "Central (click to change)   ",
                  "Cross (click to change)     ",
                  "Heavy box (click to change) " };

        if( color_block_cols < 0)
            color_block_cols = 0;
        if( redraw)
        {
            mvaddstr( 1, COL1, "'Normal' white-on-black");
#if(CHTYPE_LONG >= 2)       /* "non-standard" 64-bit chtypes     */
            attron( A_DIM);
            mvaddstr( 2, COL1, "Dimmed text");
            attroff( A_DIM);
#endif
#ifdef PDC_WIDE
            mvaddwstr( 3, COL1, L"'Normal' text,  but wide");
#endif
            attron( A_BLINK);
            mvaddstr( 6, 40, "Blinking");
            attron( A_BOLD);
            mvaddstr( 8, 40, "BlinkBold");
            attron( A_ITALIC);
            mvaddstr( 0, COL2, "BlinkBoldItalic");
            attrset( COLOR_PAIR( 3));
            attron( A_UNDERLINE);
#ifdef PDC_WIDE
            mvaddstr( 1, COL2, "Underlined");
            addwstr( L"WideUnder");
#endif
            attrset( COLOR_PAIR( 1));
            attron( A_UNDERLINE | A_ITALIC);
            mvaddstr( 2, COL2, "UnderlinedItalic");
            attrset( COLOR_PAIR( 2));
            attron( A_BLINK);
            mvaddstr( 4, COL1, "Black-on-yellow blinking");

            attrset( COLOR_PAIR( 1));
            move( 4, COL2);
            text_in_a_box( "Text in a box");

#ifdef CHTYPE_LONG
            attrset( COLOR_PAIR( 6));
            attron( A_STRIKEOUT);
            mvaddstr( 10, 40, "Strikeout");
            attrset( COLOR_PAIR( 1));
#endif

#ifdef PDC_WIDE
            move( 11, 40);
            text_in_a_box( "Next Ucode pg");
            if( unicode_offset)
               {
               move( 12, 40);
               text_in_a_box( "Prev Ucode pg");
               }
            mvprintw( 13, 40, "U+%04x ", unicode_offset);

#endif

            for( i = 0; i < 128; i++)
            {                 /* Show extended characters: */
#ifdef PDC_WIDE
                wchar_t buff[20];

                swprintf( buff, 20, L"%02x ",
                           (unsigned)( i + unicode_offset) & 0xff);
                mvaddwstr( 5 + i % 16, (i / 16) * 5, buff);
                if( i + unicode_offset > ' ')
                   addch( (chtype)( i + unicode_offset));
                else
                   addch( ' ');
                addch( ' ');
#else
                char buff[6];

                sprintf( buff, "%02x %c", i + 128, (char)(i + 128));
                mvaddstr( 5 + i % 16, (i / 16) * 5, buff);
#endif
            }

#if(CHTYPE_LONG >= 2)       /* "non-standard" 64-bit chtypes     */
            for( i = 0; i < 3 && i + 21 < ymax; i++)
            {                 /* Demonstrate full RGB color control: */
                int j;
                const char *output_text[3] = {
                    "Red on green to white on black   | (you can get full RGB colors when desired,",
                    "Blue on yellow to black on red | with palette coloring still being available)",
                    "White on red to green on blue,  underlined and italic" };
                const int len = (int)strlen( output_text[i]);

                move( 21 + i, 1);
                for( j = 0; j < len && j + 1 < xmax; j++)
                {
                    attr_t output_color;
                    const int oval = j * 31 / len;
                    const int reverse = 31 - oval;

                    if( !i)
                        output_color = A_RGB( 31, oval, oval, 0, reverse, 0);
                    else if( i == 1)
                        output_color = A_RGB( 0, 0, reverse, 31, reverse, 0);
                    else
                    {
                        output_color = A_RGB( reverse, 31, reverse,
                               reverse, 0, oval);
                        output_color |= A_UNDERLINE | A_ITALIC;
                    }
                    attrset( output_color);
                    addch( output_text[i][j]);
                }
            }
#endif         /* #if(CHTYPE_LONG >= 2) */
            redraw = 0;
            attrset( COLOR_PAIR( 1));
            if( extra_character_to_show && ymax > 23)
                mvaddch( 23, 63, (chtype)extra_character_to_show);

#ifdef PDC_WIDE
            for( i = 0; i < 6; i++)
            {
                static const wchar_t spanish[] = L"Espa\xf1ol";
                const int line = 24 + i / 3;
                const int col = 5 + 25 * (i % 3);

                static const wchar_t russian[] = {0x0420, 0x0443, 0x0441, 0x0441,
                   0x043a, 0x0438, 0x0439, L' ', 0x044f, 0x0437, 0x044b, 0x043a, 0};

                static const wchar_t greek[] = {0x0395, 0x03bb, 0x03bb, 0x03b7,
                   0x03bd, 0x03b9, 0x03ba, 0x03ac, 0};

                static const wchar_t georgian[] = {0x10e5, 0x10d0, 0x10e0, 0x10d7,
                   0x10e3, 0x10da, 0x10d8, L' ', 0x10d4, 0x10dc, 0x10d0, 0};

                static const wchar_t fullwidth[] = { 0xff26, 0xff55, 0xff4c, 0xff4c,
                   0xff57, 0xff49, 0xff44, 0xff54, 0xff48, 0 };  /* "Fullwidth" */

                static const wchar_t combining_marks[] = { L'C', L'o', 0x35c, L'm',
                   L'b', 0x30a, L'i', L'n', L'i', 0x304, L'n', 0x30b, 0x329,
                   L'g', 0x310,
                   L' ', L'C', 0x338, L'h', 0x306,  L'a', 0x361, L'r', L's',
                   0x30e, 0x348, 0 };

                static const wchar_t *texts[6] = { spanish, russian, greek,
                                georgian, fullwidth, combining_marks};

                if( line < ymax && col < xmax)
                   mvaddnwstr( line, 5 + 25 * (i % 3), texts[i], xmax - col);
            }
#endif

#ifdef MAYBE_TRY_THIS_SOMEWHERE_ELSE
        mvaddstr(  1, COL3, "Click on cursor descriptions to");
        mvaddstr(  2, COL3, "cycle through possible cursors");
        mvaddstr(  3, COL3, "Click on colors at left to change");
        mvaddstr(  4, COL3, "colors used for under/over/outlining");
        mvaddstr(  5, COL3, "Click 'Blink' at bottom to toggle");
        mvaddstr(  6, COL3, "'real' blinking vs. 'highlit' blink");
#endif
        }

        mvaddnstr( 19, color_block_start, cursor_state_text[cursor_state_1],
                                 xmax - color_block_start);
        mvaddnstr( 20, color_block_start, cursor_state_text[cursor_state_2],
                                 xmax - color_block_start);
        curs_set( (cursor_state_1 << 8) | cursor_state_2);
        for( i = 0; i < color_block_cols * color_block_lines; i++)
        {
            const int n_color_blocks = 256;

            attrset( COLOR_PAIR( i >= n_color_blocks ? 2 : i));
            if( i > 2 && i < n_color_blocks)
               init_pair((short)i, (short)i, COLOR_BLACK);
            if( !(i % color_block_cols))
               move( i / color_block_cols, color_block_start);
            attron( A_REVERSE);
            addstr( "  ");
        }
        move( 19, color_block_start - 3);
        refresh();
        c = getch( );
        attrset( COLOR_PAIR( 1));
        if( c == KEY_RESIZE)
        {
            redraw = 1;
            resize_term( 0, 0);
        }
        else if( c == KEY_F(1) || c == 27)
            quit = 1;
        else if( c == KEY_F(2))
        {
            blink_state ^= 1;
            PDC_set_blink( blink_state);
        }
        else if( c == KEY_F(3))   /* toggle SLKs */
        {
            use_slk ^= 1;
            if( use_slk)
                slk_restore( );
            else
                slk_clear( );
        }
        else if( c >= KEY_F(4) && c < KEY_F(12))
        {
            sscanf( labels[c - KEY_F(1)], "%x", (unsigned *)&fmt);
            if( use_slk)
                slk_setup( show_slk_index_line ? -fmt : fmt);
        }
//      else if( c == 'w')
//          PDC_write_screen_to_file( "scrdump.htm", curscr);
        if( c != KEY_MOUSE)
        {
            sprintf( buff, "Key %s hit          ", keyname( c));
            mvaddstr( 0, COL1, buff);
        }
        else
        {
            MEVENT mouse_event;
#ifdef __PDCURSES__
            nc_getmouse( &mouse_event);
#else
            getmouse( &mouse_event);
#endif
            sprintf( buff, "Mouse at %d x %d: %x  ", mouse_event.x,
                              mouse_event.y, (unsigned)mouse_event.bstate);
            mvaddstr( 0, COL1, buff);
            if( mouse_event.x >= color_block_start
                            && mouse_event.y < color_block_lines)
            {
                int new_color = (mouse_event.x - color_block_start) / 2
                              + mouse_event.y * color_block_cols;

                if( new_color >= 256)
                    new_color = -1;
                PDC_set_line_color( (short)new_color);
            }
            else if( mouse_event.x >= color_block_start)
            {
                int shift = ((mouse_event.bstate & BUTTON_MODIFIER_SHIFT) ?
                           N_CURSORS - 1 : 1);

                if( mouse_event.y == 19)  /* blink/non-blink toggle */
                    cursor_state_1 = (cursor_state_1 + shift) % N_CURSORS;
                else if( mouse_event.y == 20)  /* cycle cursor state */
                    cursor_state_2 = (cursor_state_2 + shift) % N_CURSORS;
            }
#ifdef PDC_WIDE
            else if( mouse_event.x >= 40 && mouse_event.x < 40 + 10)
               {
               if( mouse_event.y == 11)
                  {
                  redraw = 1;
                  unicode_offset += 0x80;
                  }
               else if( mouse_event.y == 12 && unicode_offset)
                  {
                  redraw = 1;
                  unicode_offset -= 0x80;
                  }
               }
#endif
        }
    }

    endwin();

    return 0;
}
Пример #3
0
int
main(int argc, char *argv[])
{
	int optc;
	int option_differences = 0,
	    option_differences_cumulative = 0,
			option_exec = 0,
			option_beep = 0,
      option_color = 0,
        option_errexit = 0,
	    option_help = 0, option_version = 0;
	double interval = 2;
	char *command;
	wchar_t *wcommand = NULL;
	char **command_argv;
	int command_length = 0;	/* not including final \0 */
	int wcommand_columns = 0;	/* not including final \0 */
	int wcommand_characters = 0; /* not including final \0 */
    watch_usec_t next_loop; /* next loop time in us, used for precise time
                               keeping only */
	int pipefd[2];
	int status;
	pid_t child;

	setlocale(LC_ALL, "");
	progname = argv[0];

	while ((optc = getopt_long(argc, argv, "+bced::hn:pvtx", longopts, (int *) 0))
	       != EOF) {
		switch (optc) {
		case 'b':
			option_beep = 1;
			break;
    case 'c':
      option_color = 1;
      break;
		case 'd':
			option_differences = 1;
			if (optarg)
				option_differences_cumulative = 1;
			break;
        case 'e':
            option_errexit = 1;
            break;
		case 'h':
			option_help = 1;
			break;
		case 't':
			show_title = 0;
			break;
		case 'x':
		  option_exec = 1;
			break;
		case 'n':
			{
				char *str;
				interval = strtod(optarg, &str);
				if (!*optarg || *str)
					do_usage();
				if(interval < 0.1)
					interval = 0.1;
				if(interval > ~0u/1000000)
					interval = ~0u/1000000;
			}
			break;
		case 'p':
			precise_timekeeping = 1;
			break;
		case 'v':
			option_version = 1;
			break;
		default:
			do_usage();
			break;
		}
	}

	if (option_version) {
		fprintf(stderr, "%s\n", VERSION);
		if (!option_help)
			exit(0);
	}

	if (option_help) {
		fprintf(stderr, usage, progname);
		fputs("  -b, --beep\t\t\t\tbeep if the command has a non-zero exit\n", stderr);
		fputs("  -d, --differences[=cumulative]\thighlight changes between updates\n", stderr);
		fputs("\t\t(cumulative means highlighting is cumulative)\n", stderr);
		fputs("  -e, --errexit\t\t\t\texit watch if the command has a non-zero exit\n", stderr);
		fputs("  -h, --help\t\t\t\tprint a summary of the options\n", stderr);
		fputs("  -n, --interval=<seconds>\t\tseconds to wait between updates\n", stderr);
        fputs("  -p, --precise\t\t\t\tprecise timing, ignore command run time\n", stderr);
		fputs("  -v, --version\t\t\t\tprint the version number\n", stderr);
		fputs("  -t, --no-title\t\t\tturns off showing the header\n", stderr);
		fputs("  -x, --exec\t\t\t\tpass command to exec instead of sh\n", stderr);
		exit(0);
	}

	if (optind >= argc)
		do_usage();

	command_argv=&(argv[optind]); /* save for later */

	command = strdup(argv[optind++]);
	command_length = strlen(command);
	for (; optind < argc; optind++) {
		char *endp;
		int s = strlen(argv[optind]);
		command = realloc(command, command_length + s + 2);	/* space and \0 */
		endp = command + command_length;
		*endp = ' ';
		memcpy(endp + 1, argv[optind], s);
		command_length += 1 + s;	/* space then string length */
		command[command_length] = '\0';
	}

	// convert to wide for printing purposes
	//mbstowcs(NULL, NULL, 0);
	wcommand_characters = mbstowcs(NULL, command, 0);
	if(wcommand_characters < 0) {
		fprintf(stderr, "Unicode Handling Error\n");
		exit(1);
	}
	wcommand = (wchar_t*)malloc((wcommand_characters+1) * sizeof(wcommand));
	if(wcommand == NULL) {
		fprintf(stderr, "Unicode Handling Error (malloc)\n");
		exit(1);
	}
	mbstowcs(wcommand, command, wcommand_characters+1);
	wcommand_columns = wcswidth(wcommand, -1);



	get_terminal_size();

	/* Catch keyboard interrupts so we can put tty back in a sane state.  */
	signal(SIGINT, die);
	signal(SIGTERM, die);
	signal(SIGHUP, die);
	signal(SIGWINCH, winch_handler);

	/* Set up tty for curses use.  */
	curses_started = 1;
	initscr();
  if (option_color) {
    if (has_colors()) {
      start_color();
      use_default_colors();
      init_ansi_colors();
    } else
      option_color = 0;
  }
	nonl();
	noecho();
	cbreak();

	if (precise_timekeeping)
		next_loop = get_time_usec();

	for (;;) {
		time_t t = time(NULL);
		char *ts = ctime(&t);
		int tsl = strlen(ts);
		char *header;
		FILE *p;
		int x, y;
		int oldeolseen = 1;

		if (screen_size_changed) {
			get_terminal_size();
			resizeterm(height, width);
			clear();
			/* redrawwin(stdscr); */
			screen_size_changed = 0;
			first_screen = 1;
		}

		if (show_title) {
			// left justify interval and command,
			// right justify time, clipping all to fit window width

			int hlen = asprintf(&header, "Every %.1fs: ", interval);

			// the rules:
			//   width < tsl : print nothing
			//   width < tsl + hlen + 1: print ts
			//   width = tsl + hlen + 1: print header, ts
			//   width < tsl + hlen + 4: print header, ..., ts
			//   width < tsl + hlen + wcommand_columns: print header, truncated wcommand, ..., ts
			//   width > "": print header, wcomand, ts
			// this is slightly different from how it used to be
			if(width >= tsl) {
				if(width >= tsl + hlen + 1) {
					mvaddstr(0, 0, header);
					if(width >= tsl + hlen + 2) {
						if(width < tsl + hlen + 4) {
							mvaddstr(0, width - tsl - 4, "...  ");
						}else{
							if(width < tsl + hlen + wcommand_columns) {
								// print truncated
								int avail_columns = width - tsl - hlen;
								int using_columns = wcommand_columns;
								int using_characters = wcommand_characters;
								while(using_columns > avail_columns - 4) {
									using_characters--;
								using_columns = wcswidth(wcommand, using_characters);
								}
								mvaddnwstr(0, hlen, wcommand, using_characters);
								mvaddstr(0, width - tsl - 4, "... ");
							}else{
								mvaddwstr(0, hlen, wcommand);
							}
						}
					}
				}
				mvaddstr(0, width - tsl + 1, ts);
			}

			free(header);
		}

		/* allocate pipes */
		if (pipe(pipefd)<0) {
		  perror("pipe");
			do_exit(7);
	  }

		/* flush stdout and stderr, since we're about to do fd stuff */
		fflush(stdout);
		fflush(stderr);

		/* fork to prepare to run command */
		child=fork();

		if (child<0) { /* fork error */
		  perror("fork");
			do_exit(2);
		} else if (child==0) { /* in child */
			close (pipefd[0]); /* child doesn't need read side of pipe */
			close (1); /* prepare to replace stdout with pipe */
			if (dup2 (pipefd[1], 1)<0) { /* replace stdout with write side of pipe */
			  perror("dup2");
				exit(3);
			}
			dup2(1, 2); /* stderr should default to stdout */

			if (option_exec) { /* pass command to exec instead of system */
			  if (execvp(command_argv[0], command_argv)==-1) {
				  perror("exec");
				  exit(4);
				}
			} else {
		    status=system(command); /* watch manpage promises sh quoting */

			  /* propagate command exit status as child exit status */
			  if (!WIFEXITED(status)) { /* child exits nonzero if command does */
			    exit(1);
			  } else {
			    exit(WEXITSTATUS(status));
		    }
			}

		}

		/* otherwise, we're in parent */
		close(pipefd[1]); /* close write side of pipe */
		if ((p=fdopen(pipefd[0], "r"))==NULL) {
		  perror("fdopen");
			do_exit(5);
		}


		for (y = show_title; y < height; y++) {
			int eolseen = 0, tabpending = 0;
			wint_t carry = WEOF;
			for (x = 0; x < width; x++) {
				wint_t c = L' ';
				int attr = 0;

				if (!eolseen) {
					/* if there is a tab pending, just spit spaces until the
					   next stop instead of reading characters */
					if (!tabpending)
						do {
							if(carry == WEOF) {
								c = my_getwc(p);
							}else{
								c = carry;
								carry = WEOF;
							}
						}while (c != WEOF && !isprint(c) && c<128
						       && wcwidth(c) == 0
						       && c != L'\n'
						       && c != L'\t'
                   && (c != L'\033' || option_color != 1));
          if (c == L'\033' && option_color == 1) {
            x--;
            process_ansi(p);
            continue;
          }
					if (c == L'\n')
						if (!oldeolseen && x == 0) {
							x = -1;
							continue;
						} else
							eolseen = 1;
					else if (c == L'\t')
						tabpending = 1;
					if (x==width-1 && wcwidth(c)==2) {
						y++;
						x = -1; //process this double-width
						carry = c; //character on the next line
						continue; //because it won't fit here
					}
					if (c == WEOF || c == L'\n' || c == L'\t')
						c = L' ';
					if (tabpending && (((x + 1) % 8) == 0))
						tabpending = 0;
				}
				move(y, x);
				if (option_differences) {
						cchar_t oldc;
					in_wch(&oldc);
					attr = !first_screen
					    && ((wchar_t)c != oldc.chars[0]
						||
						(option_differences_cumulative
						 && (oldc.attr & A_ATTRIBUTES)));
				}
				if (attr)
					standout();
				addnwstr((wchar_t*)&c,1);
				if (attr)
					standend();
				if(wcwidth(c) == 0) { x--; }
				if(wcwidth(c) == 2) { x++; }
			}
			oldeolseen = eolseen;
		}

		fclose(p);

		/* harvest child process and get status, propagated from command */
		if (waitpid(child, &status, 0)<0) {
		  perror("waitpid");
			do_exit(8);
		};

		/* if child process exited in error, beep if option_beep is set */
		if ((!WIFEXITED(status) || WEXITSTATUS(status))) {
          if (option_beep) beep();
          if (option_errexit) do_exit(8);
		}

		first_screen = 0;
		refresh();
		if (precise_timekeeping) {
			watch_usec_t cur_time = get_time_usec();
			next_loop += USECS_PER_SEC*interval;
			if (cur_time < next_loop)
				usleep(next_loop - cur_time);
		} else
		usleep(interval * 1000000);
	}

	endwin();

	return 0;
}