+/****************************************************************************
+ * Copyright 2019-2021,2022 Thomas E. Dickey *
+ * Copyright 1998-2016,2017 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
/*
* view.c -- a silly little viewer program
*
*
* modified by Thomas Dickey <dickey@clark.net> July 1995 to demonstrate
* the use of 'resizeterm()', and May 2000 to illustrate wide-character
- * handling.
+ * handling. This program intentionally does not use pads, to allow testing
+ * with less-capable implementations of curses.
*
* Takes a filename argument. It's a simple file-viewer with various
* scroll-up and scroll-down commands.
* scroll operation worked, and the refresh() code only had to do a
* partial repaint.
*
- * $Id: view.c,v 1.29 2000/05/21 01:43:03 tom Exp $
+ * $Id: view.c,v 1.145 2022/12/04 00:40:11 tom Exp $
*/
#include <test.priv.h>
+#include <widechars.h>
+#include <popup_msg.h>
-#include <string.h>
-#include <ctype.h>
-#include <signal.h>
+#include <sys/stat.h>
+#include <time.h>
-#if HAVE_TERMIOS_H
-# include <termios.h>
-#else
-# include <sgtty.h>
+static GCC_NORETURN void finish(int sig);
+
+#define my_pair 1
+
+static int shift = 0;
+static bool try_color = FALSE;
+
+static char *fname;
+static NCURSES_CH_T **vec_lines;
+static NCURSES_CH_T **lptr;
+static int num_lines;
+
+#if USE_WIDEC_SUPPORT
+static bool n_option = FALSE;
#endif
-#if !defined(sun) || !HAVE_TERMIOS_H
-# if HAVE_SYS_IOCTL_H
-# include <sys/ioctl.h>
-# endif
+static GCC_NORETURN void
+failed(const char *msg)
+{
+ endwin();
+ fprintf(stderr, "%s\n", msg);
+ ExitProgram(EXIT_FAILURE);
+}
+
+static int
+ch_len(NCURSES_CH_T *src)
+{
+ int result = 0;
+
+#if USE_WIDEC_SUPPORT
+ for (;;) {
+ int count;
+ TEST_CCHAR(src, count, {
+ int len = wcwidth(test_wch[0]);
+ result += (len > 0) ? len : 1;
+ ++src;
+ }
+ , {
+ break;
+ })
+ }
+#else
+ while (*src++)
+ result++;
#endif
+ return result;
+}
-/* This is needed to compile 'struct winsize' */
-#if NEED_PTEM_H
-#include <sys/stream.h>
-#include <sys/ptem.h>
+static void
+finish(int sig)
+{
+ endwin();
+#if NO_LEAKS
+ if (vec_lines != 0) {
+ int n;
+ for (n = 0; n < num_lines; ++n) {
+ free(vec_lines[n]);
+ }
+ free(vec_lines);
+ }
#endif
+ ExitProgram(sig != 0 ? EXIT_FAILURE : EXIT_SUCCESS);
+}
+
+static void
+show_all(const char *tag)
+{
+ int i;
+ int digits;
+ char temp[BUFSIZ];
+ time_t this_time;
+
+ for (digits = 1, i = num_lines; i > 0; i /= 10) {
+ ++digits;
+ }
-static RETSIGTYPE finish(int sig) GCC_NORETURN;
-static void show_all(void);
+ _nc_SPRINTF(temp, _nc_SLIMIT(sizeof(temp))
+ "view %.*s", (int) strlen(tag), tag);
+ i = (int) strlen(temp);
+ _nc_SPRINTF(temp + i, _nc_SLIMIT(sizeof(temp) - (size_t) i)
+ " %.*s", (int) sizeof(temp) - i - 2, fname);
+ move(0, 0);
+ printw("%.*s", COLS, temp);
+ clrtoeol();
+ this_time = time((time_t *) 0);
+ _nc_STRNCPY(temp, ctime(&this_time), (size_t) 30);
+ if ((i = (int) strlen(temp)) != 0) {
+ temp[--i] = 0;
+ if (move(0, COLS - i - 2) != ERR)
+ printw(" %s", temp);
+ }
-#if defined(SIGWINCH) && defined(TIOCGWINSZ) && defined(HAVE_RESIZETERM)
-#define CAN_RESIZE 1
+ scrollok(stdscr, FALSE); /* prevent screen from moving */
+ for (i = 1; i < LINES; i++) {
+ NCURSES_CH_T *s;
+ int len;
+ int actual = (int) (lptr + i - vec_lines);
+
+ if (actual > num_lines) {
+ if (i < LINES - 1) {
+ int y, x;
+ getyx(stdscr, y, x);
+ move(i, 0);
+ clrtobot();
+ move(y, x);
+ }
+ break;
+ }
+ move(i, 0);
+ printw("%*d:", digits, actual);
+ clrtoeol();
+ if ((s = lptr[i - 1]) == 0) {
+ continue;
+ }
+ len = ch_len(s);
+ if (len > shift) {
+#if USE_WIDEC_SUPPORT
+ /*
+ * An index into an array of cchar_t's is not necessarily the same
+ * as the column-offset. A pad would do this directly. Here we
+ * must translate (or compute a table of offsets).
+ */
+ {
+ int j;
+ int width = 1;
+
+ for (j = actual = 0; j < shift; ++j) {
+ int count;
+
+ TEST_CCHAR(s + j, count, {
+ width = wcwidth(test_wch[0]);
+ }
+ , {
+ width = 1;
+ });
+ actual += width;
+ if (actual > shift) {
+ break;
+ } else if (actual == shift) {
+ ++j;
+ break;
+ }
+ }
+ if (actual < len) {
+ if (actual > shift)
+ addch('<');
+ add_wchstr(s + j + (actual > shift));
+ }
+ }
#else
-#define CAN_RESIZE 0
+ addchstr(s + shift);
+#endif
+ }
+#if defined(NCURSES_VERSION) || defined(HAVE_WCHGAT)
+ if (try_color)
+ wchgat(stdscr, -1, WA_NORMAL, my_pair, NULL);
#endif
+ }
+ setscrreg(1, LINES - 1);
+ scrollok(stdscr, TRUE);
+ refresh();
+}
+
+static void
+read_file(const char *filename)
+{
+ FILE *fp;
+ int pass;
+ int k;
+ int width;
+ size_t j;
+ size_t len;
+ struct stat sb;
+ char *my_blob;
+ char **my_vec = 0;
+ WINDOW *my_win;
+
+ if (stat(filename, &sb) != 0
+ || (sb.st_mode & S_IFMT) != S_IFREG) {
+ failed("input is not a file");
+ }
+
+ if (sb.st_size == 0) {
+ failed("input is empty");
+ }
+
+ if ((fp = fopen(filename, "r")) == 0) {
+ failed("cannot open input-file");
+ }
+
+ if ((my_blob = malloc((size_t) sb.st_size + 1)) == 0) {
+ failed("cannot allocate memory for input-file");
+ }
+
+ len = fread(my_blob, sizeof(char), (size_t) sb.st_size, fp);
+ fclose(fp);
+
+ if (len > (size_t) sb.st_size)
+ len = (size_t) sb.st_size;
+ my_blob[len] = '\0';
+
+ for (pass = 0; pass < 2; ++pass) {
+ char *base = my_blob;
+ k = 0;
+ for (j = 0; j < len; ++j) {
+ if (my_blob[j] == '\n') {
+ if (pass) {
+ my_vec[k] = base;
+ my_blob[j] = '\0';
+ }
+ base = my_blob + j + 1;
+ ++k;
+ }
+ }
+ if (base != (my_blob + j)) {
+ if (pass)
+ my_vec[k] = base;
+ ++k;
+ }
+ num_lines = k;
+ if (pass == 0) {
+ if (((my_vec = typeCalloc(char *, (size_t) k + 2)) == 0)) {
+ failed("cannot allocate line-vector #1");
+ }
+ } else {
+ if (my_vec[0] == NULL)
+ my_vec[0] = my_blob;
+ }
+ }
+
+#if USE_WIDEC_SUPPORT
+ if (!memcmp("\357\273\277", my_blob, 3)) {
+ char *s = my_blob + 3;
+ char *d = my_blob;
+ Trace(("trim BOM"));
+ do {
+ } while ((*d++ = *s++) != '\0');
+ }
+#endif
+
+ width = (int) strlen(my_vec[0]);
+ for (k = 1; my_vec[k]; ++k) {
+ int check = (int) (my_vec[k] - my_vec[k - 1]);
+ if (width < check)
+ width = check;
+ }
+ width = (width + 1) * 5;
+ my_win = newwin(2, width, 0, 0);
+ if (my_win == 0) {
+ failed("cannot allocate temporary window");
+ }
-#if CAN_RESIZE
-static RETSIGTYPE adjust(int sig);
-static int interrupted;
+ if ((vec_lines = typeCalloc(NCURSES_CH_T *, (size_t) num_lines + 2)) == 0) {
+ failed("cannot allocate line-vector #2");
+ }
+
+ /*
+ * Use the curses library for rendering, including tab-conversion. This
+ * will not make the resulting array's indices correspond to column for
+ * lines containing double-width cells because the "in_wch" functions will
+ * ignore the skipped cells. Use pads for that sort of thing.
+ */
+ Trace(("slurp the file"));
+ for (k = 0; my_vec[k]; ++k) {
+ char *s;
+ int y, x;
+#if USE_WIDEC_SUPPORT
+ char *last = my_vec[k] + (int) strlen(my_vec[k]);
+ wchar_t wch[2];
+ size_t rc;
+#ifndef state_unused
+ mbstate_t state;
#endif
+#endif /* USE_WIDEC_SUPPORT */
-static int waiting;
-static int shift;
-static int utf8_mode = FALSE;
+ werase(my_win);
+ wmove(my_win, 0, 0);
+#if USE_WIDEC_SUPPORT
+ wch[1] = 0;
+ reset_mbytes(state);
+#endif
+ for (s = my_vec[k]; *s != '\0'; ++s) {
+#if USE_WIDEC_SUPPORT
+ if (!n_option) {
+ rc = (size_t) check_mbytes(wch[0], s, (size_t) (last - s), state);
+ if ((long) rc == -1 || (long) rc == -2) {
+ break;
+ }
+ s += rc - 1;
+ waddwstr(my_win, wch);
+ } else
+#endif
+ waddch(my_win, *s & 0xff);
+ }
+ getyx(my_win, y, x);
+ if (y)
+ x = width - 1;
+ wmove(my_win, 0, 0);
+ /* "x + 1" works with standard curses; some implementations are buggy */
+ if ((vec_lines[k] = typeCalloc(NCURSES_CH_T, x + width + 1)) == 0) {
+ failed("cannot allocate line-vector #3");
+ }
+#if USE_WIDEC_SUPPORT
+ win_wchnstr(my_win, vec_lines[k], x);
+#else
+ winchnstr(my_win, vec_lines[k], x);
+#endif
+ }
-static char *fname;
-static chtype **lines;
-static chtype **lptr;
+ delwin(my_win);
+ free(my_vec);
+ free(my_blob);
+}
-static void
-usage(void)
+static GCC_NORETURN void
+usage(int ok)
{
static const char *msg[] =
{
"Usage: view [options] file"
,""
+ ,USAGE_COMMON
,"Options:"
- ," -n NUM specify maximum number of lines (default 1000)"
-#if defined(KEY_RESIZE)
- ," -r use experimental KEY_RESIZE rather than our own handler"
+ ," -c use color if terminal supports it"
+ ," -i ignore INT, QUIT, TERM signals"
+#if USE_WIDEC_SUPPORT
+ ," -n use waddch (bytes) rather then wadd_wch (wide-chars)"
#endif
+ ," -s start in single-step mode, waiting for input"
#ifdef TRACE
," -t trace screen updates"
," -T NUM specify trace mask"
#endif
- ," -u translate UTF-8 data"
};
size_t n;
for (n = 0; n < SIZEOF(msg); n++)
fprintf(stderr, "%s\n", msg[n]);
- exit(EXIT_FAILURE);
-}
-
-static int
-ch_len(chtype * src)
-{
- int result = 0;
- while (*src++)
- result++;
- return result;
-}
-
-/*
- * Allocate a string into an array of chtype's. If UTF-8 mode is
- * active, translate the string accordingly.
- */
-static chtype *
-ch_dup(char *src)
-{
- unsigned len = strlen(src);
- chtype *dst = typeMalloc(chtype, len + 1);
- unsigned j, k;
- unsigned utf_count = 0;
- unsigned utf_char = 0;
-
-#define UCS_REPL 0xfffd
-
- for (j = k = 0; j < len; j++) {
- if (utf8_mode) {
- unsigned c = src[j] & 0xff;
- /* Combine UTF-8 into Unicode */
- if (c < 0x80) {
- /* We received an ASCII character */
- if (utf_count > 0)
- dst[k++] = UCS_REPL; /* prev. sequence incomplete */
- dst[k++] = c;
- utf_count = 0;
- } else if (c < 0xc0) {
- /* We received a continuation byte */
- if (utf_count < 1) {
- dst[k++] = UCS_REPL; /* ... unexpectedly */
- } else {
- if (!utf_char && !((c & 0x7f) >> (7 - utf_count))) {
- utf_char = UCS_REPL;
- }
- /* characters outside UCS-2 become UCS_REPL */
- if (utf_char > 0x03ff) {
- /* value would be >0xffff */
- utf_char = UCS_REPL;
- } else {
- utf_char <<= 6;
- utf_char |= (c & 0x3f);
- }
- utf_count--;
- if (utf_count == 0)
- dst[k++] = utf_char;
- }
- } else {
- /* We received a sequence start byte */
- if (utf_count > 0)
- dst[k++] = UCS_REPL; /* prev. sequence incomplete */
- if (c < 0xe0) {
- utf_count = 1;
- utf_char = (c & 0x1f);
- if (!(c & 0x1e))
- utf_char = UCS_REPL; /* overlong sequence */
- } else if (c < 0xf0) {
- utf_count = 2;
- utf_char = (c & 0x0f);
- } else if (c < 0xf8) {
- utf_count = 3;
- utf_char = (c & 0x07);
- } else if (c < 0xfc) {
- utf_count = 4;
- utf_char = (c & 0x03);
- } else if (c < 0xfe) {
- utf_count = 5;
- utf_char = (c & 0x01);
- } else {
- dst[k++] = UCS_REPL;
- utf_count = 0;
- }
- }
- } else {
- dst[k++] = src[j];
- }
- }
- dst[k] = 0;
- return dst;
+ ExitProgram(ok ? EXIT_SUCCESS : EXIT_FAILURE);
}
+/* *INDENT-OFF* */
+VERSION_COMMON()
+/* *INDENT-ON* */
int
main(int argc, char *argv[])
{
- int MAXLINES = 1000;
- FILE *fp;
- char buf[BUFSIZ];
- int i;
- chtype **olptr;
- int done = FALSE;
- int length = 0;
-#if CAN_RESIZE
- bool use_resize = TRUE;
-#endif
+ static const char *help[] =
+ {
+ "Commands:",
+ " q,^Q,ESC - quit this program",
+ "",
+ " p,<Up> - scroll the viewport up by one row",
+ " n,<Down> - scroll the viewport down by one row",
+ " l,<Left> - scroll the viewport left by one column",
+ " r,<Right> - scroll the viewport right by one column",
+ " <,> - scroll the viewport left/right by 8 columns",
+ "",
+ " h,<Home> - scroll the viewport to top of file",
+ " ^F,<PageDn> - scroll to the next page",
+ " ^B,<PageUp> - scroll to the previous page",
+ " e,<End> - scroll the viewport to end of file",
+ "",
+ " ^L - repaint using redrawwin()",
+ "",
+ " 0 through 9 - enter digits for count",
+ " s - use entered count for halfdelay() parameter",
+ " - if no entered count, stop nodelay()",
+ " <space> - begin nodelay()",
+ 0
+ };
- while ((i = getopt(argc, argv, "n:rtT:u")) != EOF) {
- switch (i) {
- case 'n':
- if ((MAXLINES = atoi(optarg)) < 1)
- usage();
+ int ch;
+ int i;
+ int my_delay = 0;
+ NCURSES_CH_T **olptr;
+ int value = 0;
+ bool done = FALSE;
+ bool got_number = FALSE;
+ bool ignore_sigs = FALSE;
+ bool single_step = FALSE;
+ const char *my_label = "Input";
+
+ setlocale(LC_ALL, "");
+
+ while ((ch = getopt(argc, argv, OPTS_COMMON "cinstT:")) != -1) {
+ switch (ch) {
+ case 'c':
+ try_color = TRUE;
break;
-#if CAN_RESIZE
- case 'r':
- use_resize = FALSE;
+ case 'i':
+ ignore_sigs = TRUE;
+ break;
+#if USE_WIDEC_SUPPORT
+ case 'n':
+ n_option = TRUE;
break;
#endif
+ case 's':
+ single_step = TRUE;
+ break;
#ifdef TRACE
case 'T':
- trace(atoi(optarg));
+ {
+ char *next = 0;
+ int tvalue = (int) strtol(optarg, &next, 0);
+ if (tvalue < 0 || (next != 0 && *next != 0))
+ usage(FALSE);
+ curses_trace((unsigned) tvalue);
+ }
break;
case 't':
- trace(TRACE_CALLS);
+ curses_trace(TRACE_CALLS);
break;
#endif
- case 'u':
- utf8_mode = TRUE;
- break;
+ case OPTS_VERSION:
+ show_version(argv);
+ ExitProgram(EXIT_SUCCESS);
default:
- usage();
+ usage(ch == OPTS_USAGE);
+ /* NOTREACHED */
}
}
if (optind + 1 != argc)
- usage();
+ usage(FALSE);
- if ((lines = typeMalloc(chtype *, MAXLINES + 2)) == 0)
- usage();
-
- fname = argv[optind];
- if ((fp = fopen(fname, "r")) == 0) {
- perror(fname);
- return EXIT_FAILURE;
- }
-
- (void) signal(SIGINT, finish); /* arrange interrupts to terminate */
-#if CAN_RESIZE
- if (use_resize)
- (void) signal(SIGWINCH, adjust); /* arrange interrupts to resize */
-#endif
-
- /* slurp the file */
- for (lptr = &lines[0]; (lptr - lines) < MAXLINES; lptr++) {
- char temp[BUFSIZ], *s, *d;
- int col;
-
- if (fgets(buf, sizeof(buf), fp) == 0)
- break;
-
- /* convert tabs so that shift will work properly */
- for (s = buf, d = temp, col = 0; (*d = *s) != '\0'; s++) {
- if (*d == '\n') {
- *d = '\0';
- break;
- } else if (*d == '\t') {
- col = (col | 7) + 1;
- while ((d - temp) != col)
- *d++ = ' ';
- } else if (isprint(*d) || utf8_mode) {
- col++;
- d++;
- } else {
- sprintf(d, "\\%03o", *s & 0xff);
- d += strlen(d);
- col = (d - temp);
- }
- }
- *lptr = ch_dup(temp);
- }
- (void) fclose(fp);
- length = lptr - lines;
-
- (void) initscr(); /* initialize the curses library */
+ InitAndCatch(initscr(), ignore_sigs ? SIG_IGN : finish);
keypad(stdscr, TRUE); /* enable keyboard mapping */
(void) nonl(); /* tell curses not to do NL->CR/NL on output */
(void) cbreak(); /* take input chars one at a time, no wait for \n */
(void) noecho(); /* don't echo input */
+ if (!single_step)
+ nodelay(stdscr, TRUE);
idlok(stdscr, TRUE); /* allow use of insert/delete line */
- lptr = lines;
+ read_file(fname = argv[optind]);
+
+ if (try_color) {
+ if (has_colors()) {
+ start_color();
+ init_pair(my_pair, COLOR_WHITE, COLOR_BLUE);
+ bkgd((chtype) COLOR_PAIR(my_pair));
+ } else {
+ try_color = FALSE;
+ }
+ }
+
+ lptr = vec_lines;
while (!done) {
int n, c;
- bool got_number;
- show_all();
+ if (!got_number)
+ show_all(my_label);
- got_number = FALSE;
- n = 0;
for (;;) {
-#if CAN_RESIZE
- if (interrupted)
- adjust(0);
-#endif
- waiting = TRUE;
c = getch();
- waiting = FALSE;
if ((c < 127) && isdigit(c)) {
if (!got_number) {
- mvprintw(0, 0, "Count: ");
+ MvPrintw(0, 0, "Count: ");
clrtoeol();
}
- addch(c);
- n = 10 * n + (c - '0');
+ addch(UChar(c));
+ value = 10 * value + (c - '0');
got_number = TRUE;
} else
break;
}
- if (!got_number && n == 0)
+ if (got_number && value) {
+ n = value;
+ } else {
n = 1;
+ }
+ if (c != ERR)
+ my_label = keyname(c);
switch (c) {
case KEY_DOWN:
case 'n':
olptr = lptr;
for (i = 0; i < n; i++)
- if ((lptr - lines) < (length - LINES + 1))
+ if ((lptr - vec_lines) < (num_lines - LINES + 1))
lptr++;
else
break;
- wscrl(stdscr, lptr - olptr);
+ scrl((int) (lptr - olptr));
break;
case KEY_UP:
case 'p':
olptr = lptr;
for (i = 0; i < n; i++)
- if (lptr > lines)
+ if (lptr > vec_lines)
lptr--;
else
break;
- wscrl(stdscr, lptr - olptr);
+ scrl((int) (lptr - olptr));
break;
case 'h':
+ /* FALLTHRU */
case KEY_HOME:
- lptr = lines;
+ lptr = vec_lines;
+ break;
+
+ case '<':
+ if ((shift -= 8) < 0)
+ shift = 0;
+ break;
+ case '>':
+ shift += 8;
break;
case 'e':
+ /* FALLTHRU */
case KEY_END:
- if (length > LINES)
- lptr = lines + length - LINES + 1;
+ if (num_lines > LINES)
+ lptr = (vec_lines + num_lines - LINES + 1);
else
- lptr = lines;
+ lptr = (vec_lines + (num_lines - 2));
+ break;
+
+ case CTRL('F'):
+ /* FALLTHRU */
+ case KEY_NPAGE:
+ for (i = 0; i < n; i++) {
+ if ((lptr - vec_lines) < (num_lines - 5))
+ lptr += (LINES - 1);
+ else
+ lptr = (vec_lines + num_lines - 2);
+ }
+ break;
+
+ case CTRL('B'):
+ /* FALLTHRU */
+ case KEY_PPAGE:
+ for (i = 0; i < n; i++) {
+ if ((lptr - vec_lines) >= LINES)
+ lptr -= (LINES - 1);
+ else
+ lptr = vec_lines;
+ }
break;
case 'r':
case KEY_RIGHT:
- shift++;
+ shift += n;
break;
case 'l':
case KEY_LEFT:
- if (shift)
- shift--;
- else
+ shift -= n;
+ if (shift < 0) {
+ shift = 0;
beep();
+ }
break;
case 'q':
+ case QUIT:
+ case ESCAPE:
done = TRUE;
break;
case KEY_RESIZE: /* ignore this; ncurses will repaint */
break;
#endif
-#if CAN_RESIZE
+ case 's':
+#if HAVE_HALFDELAY
+ if (got_number) {
+ halfdelay(my_delay = n);
+ } else {
+ nodelay(stdscr, FALSE);
+ my_delay = -1;
+ }
+#else
+ nodelay(stdscr, FALSE);
+ my_delay = -1;
+#endif
+ break;
+ case ' ':
+ nodelay(stdscr, TRUE);
+ my_delay = 0;
+ break;
+ case CTRL('L'):
+ redrawwin(stdscr);
+ break;
case ERR:
+ if (!my_delay)
+ napms(50);
+ break;
+ case HELP_KEY_1:
+ popup_msg(stdscr, help);
break;
-#endif
default:
beep();
+ break;
}
- }
-
- finish(0); /* we're done */
-}
-
-static RETSIGTYPE
-finish(int sig)
-{
- endwin();
- exit(sig != 0 ? EXIT_FAILURE : EXIT_SUCCESS);
-}
-
-#if CAN_RESIZE
-/*
- * This uses functions that are "unsafe", but it seems to work on SunOS and
- * Linux. The 'wrefresh(curscr)' is needed to force the refresh to start from
- * the top of the screen -- some xterms mangle the bitmap while resizing.
- */
-static RETSIGTYPE
-adjust(int sig)
-{
- if (waiting || sig == 0) {
- struct winsize size;
-
- if (ioctl(fileno(stdout), TIOCGWINSZ, &size) == 0) {
- resizeterm(size.ws_row, size.ws_col);
- wrefresh(curscr); /* Linux needs this */
- show_all();
+ if (c >= KEY_MIN || (c > 0 && !isdigit(c))) {
+ got_number = FALSE;
+ value = 0;
}
- interrupted = FALSE;
- } else {
- interrupted = TRUE;
}
- (void) signal(SIGWINCH, adjust); /* some systems need this */
-}
-#endif /* CAN_RESIZE */
-
-static void
-show_all(void)
-{
- int i;
- char temp[BUFSIZ];
- chtype *s;
-#if CAN_RESIZE
- sprintf(temp, "(%3dx%3d) col %d ", LINES, COLS, shift);
- i = strlen(temp);
- sprintf(temp + i, "view %.*s", (int) (sizeof(temp) - 7 - i), fname);
-#else
- sprintf(temp, "view %.*s", (int) sizeof(temp) - 7, fname);
-#endif
- move(0, 0);
- printw("%.*s", COLS, temp);
- clrtoeol();
-
- scrollok(stdscr, FALSE); /* prevent screen from moving */
- for (i = 1; i < LINES; i++) {
- move(i, 0);
- printw("%3d:", (lptr + i - lines));
- clrtoeol();
- if ((s = lptr[i - 1]) != 0) {
- int len = ch_len(s);
- if (len > shift)
- addchstr(s + shift);
- }
- }
- setscrreg(1, LINES - 1);
- scrollok(stdscr, TRUE);
- refresh();
+ finish(0); /* we're done */
}
projects / ncurses.git / blobdiff