ncurses 6.0 - patch 20170513

[ncurses.git] / test / view.c

diff --git a/test/view.c b/test/view.c
index f775040a8d79018bac73a4719a56b4694b55c90e..da073151e3fb98d0225938f4bc4426ac203e1f04 100644 (file)
--- a/test/view.c
+++ b/test/view.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2012,2013 Free Software Foundation, Inc.              *
+ * Copyright (c) 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            *
@@ -50,11 +50,12 @@
  * scroll operation worked, and the refresh() code only had to do a
  * partial repaint.
  *
- * $Id: view.c,v 1.91 2013/01/13 01:00:44 tom Exp $
+ * $Id: view.c,v 1.101 2017/04/15 20:14:01 tom Exp $
  */
 
 #include <test.priv.h>
 #include <widechars.h>
+#include <popup_msg.h>
 
 #include <time.h>
 
@@ -85,7 +86,7 @@
 #undef CTRL
 #define CTRL(x)        ((x) & 0x1f)
 
-static RETSIGTYPE finish(int sig) GCC_NORETURN;
+static void finish(int sig) GCC_NORETURN;
 static void show_all(const char *tag);
 
 #if defined(SIGWINCH) && defined(TIOCGWINSZ) && HAVE_RESIZE_TERM
@@ -95,7 +96,7 @@ static void show_all(const char *tag);
 #endif
 
 #if CAN_RESIZE
-static RETSIGTYPE adjust(int sig);
+static void adjust(int sig);
 static int interrupted;
 static bool waiting = FALSE;
 #endif
@@ -188,20 +189,23 @@ ch_dup(char *src)
     for (j = k = 0; j < len; j++) {
 #if USE_WIDEC_SUPPORT
        rc = (size_t) check_mbytes(wch, src + j, len - j, state);
-       if (rc == (size_t) -1 || rc == (size_t) -2)
+       if (rc == (size_t) -1 || rc == (size_t) -2) {
            break;
+       }
        j += rc - 1;
-       if ((width = wcwidth(wch)) < 0)
-           break;
-       if ((width > 0 && l > 0) || l == CCHARW_MAX) {
+       width = wcwidth(wch);
+       if (width == 0) {
+           if (l == 0) {
+               wstr[l++] = L' ';
+           }
+       } else if ((l > 0) || (l == CCHARW_MAX)) {
            wstr[l] = L'\0';
            l = 0;
-           if (setcchar(dst + k, wstr, 0, 0, NULL) != OK)
+           if (setcchar(dst + k, wstr, 0, 0, NULL) != OK) {
                break;
+           }
            ++k;
        }
-       if (width == 0 && l == 0)
-           wstr[l++] = L' ';
        wstr[l++] = wch;
 #else
        dst[k++] = (chtype) UChar(src[j]);
@@ -224,6 +228,28 @@ ch_dup(char *src)
 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",
+       "",
+       "  h,<Home>       - scroll the viewport to top of file",
+       "  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 MAXLINES = 1000;
     FILE *fp;
     char buf[BUFSIZ];
@@ -233,7 +259,7 @@ main(int argc, char *argv[])
     int value = 0;
     bool done = FALSE;
     bool got_number = FALSE;
-    bool single_step = TRUE;
+    bool single_step = FALSE;
 #if CAN_RESIZE
     bool nonposix_resize = FALSE;
 #endif
@@ -329,10 +355,11 @@ main(int argc, char *argv[])
        /* convert tabs and nonprinting chars so that shift will work properly */
        for (s = buf, d = temp, col = 0; (*d = *s) != '\0'; s++) {
            if (*d == '\r') {
-               if (s[1] == '\n')
+               if (s[1] == '\n') {
                    continue;
-               else
+               } else {
                    break;
+               }
            }
            if (*d == '\n') {
                *d = '\0';
@@ -349,7 +376,8 @@ main(int argc, char *argv[])
                col++;
                d++;
            } else {
-               sprintf(d, "\\%03o", UChar(*s));
+               _nc_SPRINTF(d, _nc_SLIMIT(sizeof(temp) - (d - buf))
+                           "\\%03o", UChar(*s));
                d += strlen(d);
                col = (int) (d - temp);
            }
@@ -468,6 +496,8 @@ main(int argc, char *argv[])
            break;
 
        case 'q':
+       case QUIT:
+       case ESCAPE:
            done = TRUE;
            break;
 
@@ -494,6 +524,9 @@ main(int argc, char *argv[])
            if (!my_delay)
                napms(50);
            break;
+       case HELP_KEY_1:
+           popup_msg(stdscr, help);
+           break;
        default:
            beep();
            break;
@@ -507,7 +540,7 @@ main(int argc, char *argv[])
     finish(0);                 /* we're done */
 }
 
-static RETSIGTYPE
+static void
 finish(int sig)
 {
     endwin();
@@ -534,7 +567,7 @@ finish(int sig)
  * 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
+static void
 adjust(int sig)
 {
     if (waiting || sig == 0) {
@@ -562,22 +595,25 @@ show_all(const char *tag)
     time_t this_time;
 
 #if CAN_RESIZE
-    sprintf(temp, "%.20s (%3dx%3d) col %d ", tag, LINES, COLS, shift);
+    _nc_SPRINTF(temp, _nc_SLIMIT(sizeof(temp))
+               "%.20s (%3dx%3d) col %d ", tag, LINES, COLS, shift);
     i = (int) strlen(temp);
     if ((i + 7) < (int) sizeof(temp)) {
-       sprintf(temp + i, "view %.*s",
-               (int) (sizeof(temp) - 7 - (size_t) i),
-               fname);
+       _nc_SPRINTF(temp + i, _nc_SLIMIT(sizeof(temp) - (size_t) i)
+                   "view %.*s",
+                   (int) (sizeof(temp) - 7 - (size_t) i),
+                   fname);
     }
 #else
     (void) tag;
-    sprintf(temp, "view %.*s", (int) sizeof(temp) - 7, fname);
+    _nc_SPRINTF(temp, _nc_SLIMIT(sizeof(temp))
+               "view %.*s", (int) sizeof(temp) - 7, fname);
 #endif
     move(0, 0);
     printw("%.*s", COLS, temp);
     clrtoeol();
     this_time = time((time_t *) 0);
-    strncpy(temp, ctime(&this_time), 30);
+    _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)