/****************************************************************************
- * 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);
}
projects / ncurses.git / blobdiff