ncurses-6.2ncurses-6.2

1 files changed, 529 insertions, 0 deletions

diff --git a/test/padview.c b/test/padview.c
new file mode 100644
index 0000000..6917e0e
--- /dev/null
+++ b/test/padview.c
@@ -0,0 +1,529 @@
+/****************************************************************************
+ * Copyright 2019,2020 Thomas E. Dickey                                     *
+ * Copyright 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.                                                           *
+ ****************************************************************************/
+/*
+ * clone of view.c, using pads
+ *
+ * $Id: padview.c,v 1.16 2020/02/02 23:34:34 tom Exp $
+ */
+
+#include <test.priv.h>
+#include <widechars.h>
+#include <popup_msg.h>
+
+#include <sys/stat.h>
+#include <time.h>
+
+#if HAVE_NEWPAD
+
+static void finish(int sig) GCC_NORETURN;
+
+#define my_pair 1
+
+static int shift = 0;
+static bool try_color = FALSE;
+
+static char *fname;
+static int num_lines;
+
+#if USE_WIDEC_SUPPORT
+static bool n_option = FALSE;
+#endif
+
+static void usage(void) GCC_NORETURN;
+
+static void
+failed(const char *msg)
+{
+    endwin();
+    fprintf(stderr, "%s\n", msg);
+    ExitProgram(EXIT_FAILURE);
+}
+
+static void
+finish(int sig)
+{
+    endwin();
+    ExitProgram(sig != 0 ? EXIT_FAILURE : EXIT_SUCCESS);
+}
+
+static void
+show_all(const char *tag, WINDOW *my_pad, int my_row)
+{
+    int i;
+    int digits;
+    char temp[BUFSIZ];
+    time_t this_time;
+
+    for (digits = 1, i = num_lines; i > 0; i /= 10) {
+	++digits;
+    }
+
+    wattrset(stdscr, COLOR_PAIR(my_pair));
+    clear();
+
+    _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);
+    mvprintw(0, 0, "%.*s", COLS, temp);
+    this_time = time((time_t *) 0);
+    _nc_STRNCPY(temp, ctime(&this_time), (size_t) 30);
+    if ((i = (int) strlen(temp)) != 0) {
+	temp[--i] = 0;
+	mvprintw(0, COLS - i - 2, "  %s", temp);
+    }
+
+    for (i = 1; i < LINES; i++) {
+	int actual = my_row + i;
+	if (actual > num_lines) {
+	    break;
+	}
+	mvprintw(i, 0, "%*d:", digits, actual);
+    }
+    wnoutrefresh(stdscr);
+    pnoutrefresh(my_pad, my_row, shift, 1, digits + 1, LINES - 1, COLS - 1);
+    doupdate();
+}
+
+static WINDOW *
+read_file(const char *filename)
+{
+    FILE *fp;
+    int pass;
+    int k;
+    int height, width;
+    size_t j;
+    size_t len;
+    struct stat sb;
+    char *my_blob;
+    char **my_vec = 0;
+    WINDOW *my_pad;
+
+    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);
+    my_blob[sb.st_size] = '\0';
+    fclose(fp);
+
+    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;
+	    }
+	}
+	num_lines = k;
+	if (base != (my_blob + j))
+	    ++num_lines;
+	if (!pass &&
+	    ((my_vec = typeCalloc(char *, (size_t) k + 2)) == 0)) {
+	    failed("cannot allocate line-vector #1");
+	}
+    }
+
+#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
+
+    height = num_lines;
+    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_pad = newpad(height, width);
+    if (my_pad == 0)
+	failed("cannot allocate pad workspace");
+    if (try_color) {
+	wattrset(my_pad, COLOR_PAIR(my_pair));
+	wbkgd(my_pad, (chtype) (' ' | COLOR_PAIR(my_pair)));
+    }
+
+    /*
+     * Use the curses library for rendering, including tab-conversion.
+     */
+    Trace(("slurp the file"));
+    for (k = 0; my_vec[k]; ++k) {
+	char *s;
+#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 */
+
+	wmove(my_pad, k, 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_pad, wch);
+	    } else
+#endif
+		waddch(my_pad, *s & 0xff);
+	}
+    }
+
+    free(my_vec);
+    free(my_blob);
+
+    return my_pad;
+}
+
+static void
+usage(void)
+{
+    static const char *msg[] =
+    {
+	"Usage: view [options] file"
+	,""
+	,"Options:"
+	," -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
+    };
+    size_t n;
+    for (n = 0; n < SIZEOF(msg); n++)
+	fprintf(stderr, "%s\n", msg[n]);
+    ExitProgram(EXIT_FAILURE);
+}
+
+int
+main(int argc, char *argv[])
+{
+    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
+    };
+
+    int i;
+    int my_delay = 0;
+    WINDOW *my_pad;
+    int my_row = 0;
+    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 ((i = getopt(argc, argv, "cinstT:")) != -1) {
+	switch (i) {
+	case 'c':
+	    try_color = TRUE;
+	    break;
+	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':
+	    {
+		char *next = 0;
+		int tvalue = (int) strtol(optarg, &next, 0);
+		if (tvalue < 0 || (next != 0 && *next != 0))
+		    usage();
+		curses_trace((unsigned) tvalue);
+	    }
+	    break;
+	case 't':
+	    curses_trace(TRACE_CALLS);
+	    break;
+#endif
+	default:
+	    usage();
+	}
+    }
+    if (optind + 1 != argc)
+	usage();
+
+    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 */
+
+    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;
+	}
+    }
+
+    /*
+     * Do this after starting color, otherwise the pad's background will be
+     * uncolored after the ncurses 6.1.20181208 fixes.
+     */
+    my_pad = read_file(fname = argv[optind]);
+
+    my_row = 0;
+    while (!done) {
+	int n, c;
+
+	if (!got_number)
+	    show_all(my_label, my_pad, my_row);
+
+	for (;;) {
+	    c = getch();
+	    if ((c < 127) && isdigit(c)) {
+		if (!got_number) {
+		    MvPrintw(0, 0, "Count: ");
+		    clrtoeol();
+		}
+		addch(UChar(c));
+		value = 10 * value + (c - '0');
+		got_number = TRUE;
+	    } else
+		break;
+	}
+	if (got_number && value) {
+	    n = value;
+	} else {
+	    n = 1;
+	}
+
+	if (c != ERR)
+	    my_label = keyname(c);
+	switch (c) {
+	case KEY_DOWN:
+	case 'n':
+	    for (i = 0; i < n; i++)
+		if (my_row < (num_lines - LINES + 1))
+		    my_row++;
+		else
+		    break;
+	    break;
+
+	case KEY_UP:
+	case 'p':
+	    for (i = 0; i < n; i++)
+		if (my_row > 0)
+		    my_row--;
+		else
+		    break;
+	    break;
+
+	case 'h':
+	    /* FALLTHRU */
+	case KEY_HOME:
+	    my_row = 0;
+	    break;
+
+	case '<':
+	    if ((shift -= 8) < 0)
+		shift = 0;
+	    break;
+	case '>':
+	    shift += 8;
+	    break;
+
+	case 'e':
+	    /* FALLTHRU */
+	case KEY_END:
+	    if (num_lines > LINES)
+		my_row = (num_lines - LINES + 1);
+	    else
+		my_row = (num_lines - 2);
+	    break;
+
+	case CTRL('F'):
+	    /* FALLTHRU */
+	case KEY_NPAGE:
+	    for (i = 0; i < n; i++) {
+		if (my_row < (num_lines - 5))
+		    my_row += (LINES - 1);
+		else
+		    my_row = (num_lines - 2);
+	    }
+	    break;
+
+	case CTRL('B'):
+	    /* FALLTHRU */
+	case KEY_PPAGE:
+	    for (i = 0; i < n; i++) {
+		if (my_row >= LINES)
+		    my_row -= (LINES - 1);
+		else
+		    my_row = 0;
+	    }
+	    break;
+
+	case 'r':
+	case KEY_RIGHT:
+	    shift += n;
+	    break;
+
+	case 'l':
+	case KEY_LEFT:
+	    shift -= n;
+	    if (shift < 0) {
+		shift = 0;
+		beep();
+	    }
+	    break;
+
+	case 'q':
+	case QUIT:
+	case ESCAPE:
+	    done = TRUE;
+	    break;
+
+#ifdef KEY_RESIZE
+	case KEY_RESIZE:	/* ignore this; ncurses will repaint */
+	    break;
+#endif
+	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;
+	default:
+	    beep();
+	    break;
+	}
+	if (c >= KEY_MIN || (c > 0 && !isdigit(c))) {
+	    got_number = FALSE;
+	    value = 0;
+	}
+    }
+
+    finish(0);			/* we're done */
+}
+#else
+int
+main(void)
+{
+    printf("This program requires the curses pad functions\n");
+    ExitProgram(EXIT_FAILURE);
+}
+#endif