493 lines
11 KiB
C
493 lines
11 KiB
C
/****************************************************************************
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* Copyright (c) 2007-2011,2015 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/*
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* $Id: savescreen.c,v 1.27 2015/03/28 23:21:28 tom Exp $
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*
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* Demonstrate save/restore functions from the curses library.
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* Thomas Dickey - 2007/7/14
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*/
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#include <test.priv.h>
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#if HAVE_SCR_DUMP
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#include <sys/types.h>
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#include <sys/stat.h>
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#if TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# if HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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static bool use_init = FALSE;
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static bool keep_dumps = FALSE;
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static int
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fexists(const char *name)
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{
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struct stat sb;
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return (stat(name, &sb) == 0 && (sb.st_mode & S_IFMT) == S_IFREG);
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}
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static void
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setup_next(void)
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{
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curs_set(1);
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reset_shell_mode();
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}
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static void
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cleanup(char *files[])
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{
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int n;
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if (!keep_dumps) {
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for (n = 0; files[n] != 0; ++n) {
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unlink(files[n]);
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}
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}
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}
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static int
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load_screen(char *filename)
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{
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int result;
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if (use_init) {
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if ((result = scr_init(filename)) != ERR)
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result = scr_restore(filename);
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} else {
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result = scr_set(filename);
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}
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return result;
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}
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/*
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* scr_restore() or scr_set() operates on curscr. If we read a character using
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* getch() that will refresh stdscr, wiping out the result. To avoid that,
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* copy the data back from curscr to stdscr.
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*/
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static void
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after_load(void)
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{
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overwrite(curscr, stdscr);
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doupdate();
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}
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static void
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show_what(int which, int last)
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{
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int y, x, n;
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time_t now;
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char *mytime;
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getyx(stdscr, y, x);
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move(0, 0);
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printw("Saved %d of %d (? for help)", which, last + 1);
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now = time((time_t *) 0);
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mytime = ctime(&now);
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for (n = (int) strlen(mytime) - 1; n >= 0; --n) {
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if (isspace(UChar(mytime[n]))) {
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mytime[n] = '\0';
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} else {
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break;
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}
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}
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mvprintw(0, (COLS - n - 2), " %s", mytime);
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move(y, x);
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refresh();
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}
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static int
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get_command(int which, int last)
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{
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int ch;
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timeout(50);
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do {
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show_what(which, last);
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ch = getch();
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} while (ch == ERR);
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return ch;
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}
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static void
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show_help(const char **help)
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{
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WINDOW *mywin = newwin(LINES, COLS, 0, 0);
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int n;
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box(mywin, 0, 0);
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wmove(mywin, 1, 1);
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for (n = 0; help[n] != 0; ++n) {
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wmove(mywin, 1 + n, 2);
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wprintw(mywin, "%.*s", COLS - 4, help[n]);
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}
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wgetch(mywin);
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delwin(mywin);
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touchwin(stdscr);
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refresh();
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}
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static void
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editor_help(void)
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{
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static const char *msgs[] =
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{
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"You are now in the screen-editor, which allows you to make some",
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"lines on the screen, as well as save copies of the screen to a",
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"temporary file",
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"",
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"Keys:",
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" q quit",
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" n run the screen-loader to show the saved screens",
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" <space> dump a screen",
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"",
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" a toggle between '#' and graphic symbol for drawing",
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" c change color drawn by line to next in palette",
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" h,j,k,l or arrows to move around the screen, drawing",
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};
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show_help(msgs);
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}
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static void
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replay_help(void)
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{
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static const char *msgs[] =
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{
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"You are now in the screen-loader, which allows you to view",
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"the dumped/restored screens.",
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"",
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"Keys:",
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" q quit",
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" <space> load the next screen",
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" <backspace> load the previous screen",
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};
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show_help(msgs);
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}
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static void
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usage(void)
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{
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static const char *msg[] =
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{
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"Usage: savescreen [-r] files",
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"",
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"Options:",
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" -f file fill/initialize screen using text from this file",
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" -i use scr_init/scr_restore rather than scr_set",
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" -k keep the restored dump-files rather than removing them",
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" -r replay the screen-dump files"
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};
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unsigned n;
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for (n = 0; n < SIZEOF(msg); ++n) {
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fprintf(stderr, "%s\n", msg[n]);
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}
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ExitProgram(EXIT_FAILURE);
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}
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int
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main(int argc, char *argv[])
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{
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int ch;
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int which = 0;
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int last;
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bool replaying = FALSE;
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bool done = FALSE;
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char **files;
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char *fill_by = 0;
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#if USE_WIDEC_SUPPORT
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cchar_t mycc;
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int myxx;
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#endif
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setlocale(LC_ALL, "");
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while ((ch = getopt(argc, argv, "f:ikr")) != -1) {
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switch (ch) {
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case 'f':
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fill_by = optarg;
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break;
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case 'i':
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use_init = TRUE;
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break;
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case 'k':
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keep_dumps = TRUE;
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break;
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case 'r':
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replaying = TRUE;
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break;
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default:
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usage();
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break;
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}
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}
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files = argv + optind;
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last = argc - optind - 1;
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if (replaying) {
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while (last >= 0 && !fexists(files[last]))
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--last;
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}
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initscr();
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cbreak();
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noecho();
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keypad(stdscr, TRUE);
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curs_set(0);
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if (has_colors()) {
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short pair;
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short color;
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start_color();
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/*
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* Assume pairs is the square of colors, and assign pairs going down
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* so that there is minimal conflict with the background color (which
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* counts up). The intent is just to show how color pair values are
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* saved and restored.
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*/
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for (pair = 0; pair < COLOR_PAIRS; ++pair) {
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color = (short) (pair % (COLORS - 1));
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init_pair(pair, (short) (COLOR_WHITE - color), color);
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}
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}
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if (fill_by != 0) {
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FILE *fp = fopen(fill_by, "r");
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if (fp != 0) {
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bool filled = FALSE;
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move(1, 0);
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while ((ch = fgetc(fp)) != EOF) {
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if (addch(UChar(ch)) == ERR) {
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filled = TRUE;
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break;
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}
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}
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fclose(fp);
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if (!filled) {
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while (addch(' ') != ERR) {
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;
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}
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}
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move(0, 0);
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} else {
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endwin();
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fprintf(stderr, "Cannot open \"%s\"\n", fill_by);
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ExitProgram(EXIT_FAILURE);
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}
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}
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if (replaying) {
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/*
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* Use the last file as the initial/current screen.
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*/
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if (last < 0) {
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endwin();
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printf("No screen-dumps given\n");
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ExitProgram(EXIT_FAILURE);
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}
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which = last;
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if (load_screen(files[which]) == ERR) {
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endwin();
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printf("Cannot load screen-dump %s\n", files[which]);
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ExitProgram(EXIT_FAILURE);
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}
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after_load();
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while (!done && (ch = getch()) != ERR) {
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switch (ch) {
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case 'n':
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/*
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* If we got a "next" here, skip to the final screen before
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* moving to the next process.
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*/
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setup_next();
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which = last;
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done = TRUE;
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break;
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case 'q':
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cleanup(files);
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done = TRUE;
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break;
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case KEY_BACKSPACE:
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case '\b':
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if (--which < 0)
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which = last;
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break;
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case ' ':
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if (++which > last)
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which = 0;
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break;
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case '?':
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replay_help();
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break;
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default:
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beep();
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continue;
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}
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if (ch == 'q') {
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;
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} else if (scr_restore(files[which]) == ERR) {
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endwin();
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printf("Cannot load screen-dump %s\n", files[which]);
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cleanup(files);
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ExitProgram(EXIT_FAILURE);
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} else {
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wrefresh(curscr);
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}
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}
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endwin();
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} else {
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int y = 0;
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int x = 0;
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int color = 0;
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int altchars = 0;
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while (!done) {
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switch (get_command(which, last)) {
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case 'n':
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setup_next();
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done = TRUE;
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break;
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case 'q':
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cleanup(files);
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done = TRUE;
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break;
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case ' ':
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if (files[which] != 0) {
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show_what(which + 1, last);
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if (scr_dump(files[which]) == ERR) {
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endwin();
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printf("Cannot write screen-dump %s\n", files[which]);
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cleanup(files);
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done = TRUE;
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break;
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}
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++which;
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if (has_colors()) {
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int cx, cy;
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short pair = (short) (which % COLOR_PAIRS);
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/*
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* Change the background color, to make it more
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* obvious. But that changes the existing text-color.
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* Copy the old values from the currently displayed
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* screen.
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*/
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bkgd((chtype) COLOR_PAIR(pair));
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for (cy = 1; cy < LINES; ++cy) {
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for (cx = 0; cx < COLS; ++cx) {
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wmove(curscr, cy, cx);
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wmove(stdscr, cy, cx);
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#if USE_WIDEC_SUPPORT
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if (win_wch(curscr, &mycc) != ERR) {
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myxx = wcwidth(mycc.chars[0]);
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if (myxx > 0) {
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wadd_wchnstr(stdscr, &mycc, 1);
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cx += (myxx - 1);
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}
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}
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#else
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waddch(stdscr, winch(curscr));
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#endif
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}
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}
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}
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} else {
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beep();
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}
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break;
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case KEY_LEFT:
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case 'h':
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if (--x < 0)
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x = COLS - 1;
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break;
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case KEY_DOWN:
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case 'j':
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if (++y >= LINES)
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y = 1;
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break;
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case KEY_UP:
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case 'k':
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if (--y < 1)
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y = LINES - 1;
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break;
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case KEY_RIGHT:
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case 'l':
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if (++x >= COLS)
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x = 0;
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break;
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case 'a':
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altchars = !altchars;
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break;
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case 'c':
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color = (color + 1) % COLORS;
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break;
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case '?':
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editor_help();
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break;
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default:
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beep();
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continue;
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}
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if (!done) {
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attr_t attr = (A_REVERSE | COLOR_PAIR(color * COLORS));
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chtype ch2 = (altchars ? ACS_DIAMOND : '#');
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move(y, x);
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addch(ch2 | attr);
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move(y, x);
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}
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}
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endwin();
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}
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ExitProgram(EXIT_SUCCESS);
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}
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#else
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int
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main(int argc, char *argv[])
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{
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printf("This program requires the screen-dump functions\n");
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ExitProgram(EXIT_FAILURE);
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}
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#endif
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