Edit File: savescreen.c
/**************************************************************************** * Copyright (c) 2007 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. * ****************************************************************************/ /* * $Id: savescreen.c,v 1.10 2007/07/21 17:57:37 tom Exp $ * * Demonstrate save/restore functions from the curses library. * Thomas Dickey - 2007/7/14 */ #include <test.priv.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 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, char *argv[]) { 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; } } 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); } } files = argv + optind; last = argc - optind - 1; 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); }
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