ncurses 5.7 - patch 20100116
[ncurses.git] / test / savescreen.c
old mode 100755 (executable)
new mode 100644 (file)
index 49992c6..fe8d4e3
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 2006 Free Software Foundation, Inc.                        *
+ * Copyright (c) 2007,2009 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            *
  * authorization.                                                           *
  ****************************************************************************/
 /*
- * $Id: savescreen.c,v 1.2 2006/04/01 19:08:03 tom Exp $
+ * $Id: savescreen.c,v 1.11 2009/10/10 19:38:21 tom Exp $
  *
  * Demonstrate save/restore functions from the curses library.
- * Thomas Dickey - 2006/2/11
+ * Thomas Dickey - 2007/7/14
  */
-/*
-scr_dump                       -
-scr_init                       -
-scr_restore                    -
-scr_set                                -
-*/
 
 #include <test.priv.h>
 
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+
+static bool use_init = FALSE;
+
+static int
+fexists(const char *name)
+{
+    struct stat sb;
+    return (stat(name, &sb) == 0 && (sb.st_mode & S_IFMT) == S_IFREG);
+}
+
+static void
+setup_next(void)
+{
+    curs_set(1);
+    reset_shell_mode();
+}
+
+static void
+cleanup(char *files[])
+{
+    int n;
+
+    for (n = 0; files[n] != 0; ++n) {
+       unlink(files[n]);
+    }
+}
+
+static int
+load_screen(char *filename)
+{
+    int result;
+
+    if (use_init) {
+       if ((result = scr_init(filename)) != ERR)
+           result = scr_restore(filename);
+    } else {
+       result = scr_set(filename);
+    }
+    return result;
+}
+
+/*
+ * scr_restore() or scr_set() operates on curscr.  If we read a character using
+ * getch() that will refresh stdscr, wiping out the result.  To avoid that,
+ * copy the data back from curscr to stdscr.
+ */
+static void
+after_load(void)
+{
+    overwrite(curscr, stdscr);
+    doupdate();
+}
+
+static void
+show_what(int which, int last)
+{
+    int y, x;
+    time_t now = time((time_t *) 0);
+
+    getyx(stdscr, y, x);
+
+    move(0, 0);
+    printw("Saved %d of %d - %s", which, last + 1, ctime(&now));
+
+    move(y, x);
+
+    refresh();
+}
+
+static int
+get_command(int which, int last)
+{
+    int ch;
+
+    timeout(100);
+
+    do {
+       show_what(which, last);
+       ch = getch();
+    } while (ch == ERR);
+
+    return ch;
+}
+
+static void
+usage(void)
+{
+    static const char *msg[] =
+    {
+       "Usage: savescreen [-r] files",
+       "",
+       "Options:",
+       " -i  use scr_init/scr_restore rather than scr_set",
+       " -r  replay the screen-dump files"
+    };
+    unsigned n;
+    for (n = 0; n < SIZEOF(msg); ++n) {
+       fprintf(stderr, "%s\n", msg[n]);
+    }
+    ExitProgram(EXIT_FAILURE);
+}
+
 int
-main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
+main(int argc, char *argv[])
 {
-    printf("Not implemented - demo for screen save/restore\n");
-    return EXIT_SUCCESS;
+    int ch;
+    int which = 0;
+    int last;
+    bool replaying = FALSE;
+    bool done = FALSE;
+    char **files;
+
+    while ((ch = getopt(argc, argv, "ir")) != -1) {
+       switch (ch) {
+       case 'i':
+           use_init = TRUE;
+           break;
+       case 'r':
+           replaying = TRUE;
+           break;
+       default:
+           usage();
+           break;
+       }
+    }
+
+    files = argv + optind;
+    last = argc - optind - 1;
+
+    if (replaying) {
+       while (last >= 0 && !fexists(files[last]))
+           --last;
+    }
+
+    initscr();
+    cbreak();
+    noecho();
+    keypad(stdscr, TRUE);
+    curs_set(0);
+    if (has_colors()) {
+       start_color();
+       for (ch = 0; ch < COLOR_PAIRS; ++ch) {
+           short pair = ch % COLOR_PAIRS;
+           init_pair(pair, COLOR_WHITE, ch % COLORS);
+       }
+    }
+
+    if (replaying) {
+
+       /*
+        * Use the last file as the initial/current screen.
+        */
+       if (last < 0) {
+           endwin();
+           printf("No screen-dumps given\n");
+           ExitProgram(EXIT_FAILURE);
+       }
+
+       which = last;
+       if (load_screen(files[which]) == ERR) {
+           endwin();
+           printf("Cannot load screen-dump %s\n", files[which]);
+           ExitProgram(EXIT_FAILURE);
+       }
+       after_load();
+
+       while (!done && (ch = getch()) != ERR) {
+           switch (ch) {
+           case 'n':
+               /*
+                * If we got a "next" here, skip to the final screen before
+                * moving to the next process.
+                */
+               setup_next();
+               which = last;
+               done = TRUE;
+               break;
+           case 'q':
+               endwin();
+               cleanup(files);
+               done = TRUE;
+               break;
+           case KEY_BACKSPACE:
+           case '\b':
+               if (--which < 0)
+                   which = last;
+               break;
+           case ' ':
+               if (++which > last)
+                   which = 0;
+               break;
+           default:
+               beep();
+               continue;
+           }
+
+           if (ch == 'q') {
+               ;
+           } else if (scr_restore(files[which]) == ERR) {
+               endwin();
+               printf("Cannot load screen-dump %s\n", files[which]);
+               cleanup(files);
+               ExitProgram(EXIT_FAILURE);
+           } else {
+               wrefresh(curscr);
+           }
+       }
+    } else {
+       int y;
+       int x;
+
+       move(2, 0);
+       printw("Use h,j,k,l or arrows to move around the screen\n");
+       printw("Press 'q' to quit, ' ' to dump a screen\n");
+       printw("When the last screen has been dumped, press 'n' to run the\n");
+       printw("screen-loader.  That allows only 'q', backspace and ' ' for\n");
+       printw("stepping through the dumped/restored screens.\n");
+       getyx(stdscr, y, x);
+
+       while (!done) {
+           switch (ch = get_command(which, last)) {
+           case 'n':
+               setup_next();
+               done = TRUE;
+               break;
+           case 'q':
+               endwin();
+               cleanup(files);
+               done = TRUE;
+               break;
+           case ' ':
+               if (files[which] != 0) {
+                   show_what(which + 1, last);
+                   if (scr_dump(files[which]) == ERR) {
+                       endwin();
+                       printf("Cannot write screen-dump %s\n", files[which]);
+                       cleanup(files);
+                       done = TRUE;
+                       break;
+                   }
+                   ++which;
+                   if (has_colors()) {
+                       short pair = which % COLOR_PAIRS;
+                       bkgd(COLOR_PAIR(pair));
+                   }
+               } else {
+                   beep();
+               }
+               break;
+           case KEY_LEFT:
+           case 'h':
+               if (--x < 0)
+                   x = COLS - 1;
+               break;
+           case KEY_DOWN:
+           case 'j':
+               if (++y >= LINES)
+                   y = 1;
+               break;
+           case KEY_UP:
+           case 'k':
+               if (--y < 1)
+                   y = LINES - 1;
+               break;
+           case KEY_RIGHT:
+           case 'l':
+               if (++x >= COLS)
+                   x = 0;
+               break;
+           }
+           if (!done) {
+               time_t now = time((time_t *) 0);
+
+               move(0, 0);
+               addstr(ctime(&now));
+               move(y, x);
+               addch('#' | A_REVERSE);
+               move(y, x);
+           }
+       }
+    }
+    ExitProgram(EXIT_SUCCESS);
 }