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/**************************************************************************** * Copyright (c) 2002-2008,2012 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: demo_defkey.c,v 1.21 2012/12/29 22:55:39 tom Exp $ * * Demonstrate the define_key() function. * Thomas Dickey - 2002/11/23 / #include <test.priv.h> #if defined(NCURSES_VERSION) && NCURSES_EXT_FUNCS #define MY_LOGFILE "demo_defkey.log" / * Log the most recently-written line to our logfile / static void log_last_line(WINDOW win) { FILE fp; int y, x, n; char temp[256]; if ((fp = fopen(MY_LOGFILE, "a")) != 0) { int need = sizeof(temp) - 1; if (need > COLS) need = COLS; getyx(win, y, x); wmove(win, y - 1, 0); n = winnstr(win, temp, need); while (n-- > 0) { if (isspace(UChar(temp[n]))) temp[n] = '\0'; else break; } wmove(win, y, x); fprintf(fp, "%s\n", temp); fclose(fp); } } / * Convert a character to visible form. / static char visichar(int ch) { static char temp[10]; ch = UChar(ch); assert(ch >= 0 && ch < 256); if (ch == '\\') { strcpy(temp, "\\\\"); } else if (ch == '\033') { strcpy(temp, "\\E"); } else if (ch < ' ') { sprintf(temp, "\\%03o", ch); } else if (ch >= 127) { sprintf(temp, "\\%03o", ch); } else { sprintf(temp, "%c", ch); } return temp; } /* * Convert a string to visible form. / static char visible(const char string) { char result = 0; size_t need = 1; int pass; int n; if (string != 0 && string != '\0') { for (pass = 0; pass < 2; ++pass) { for (n = 0; string[n] != '\0'; ++n) { char temp[80]; strncpy(temp, visichar(string[n]), sizeof(temp) - 2); if (pass) strcat(result, temp); else need += strlen(temp); } if (!pass) result = typeCalloc(char, need); } } else { result = typeCalloc(char, 1); } return result; } static void really_define_key(WINDOW win, const char new_string, int code) { int rc; const char code_name = keyname(code); char old_string; char vis_string = 0; char temp[80]; if (code_name == 0) { sprintf(temp, "Keycode %d", code); code_name = temp; } if ((old_string = keybound(code, 0)) != 0) { wprintw(win, "%s is %s\n", code_name, vis_string = visible(old_string)); } else { wprintw(win, "%s is not bound\n", code_name); } log_last_line(win); if (vis_string != 0) { free(vis_string); vis_string = 0; } vis_string = visible(new_string); if ((rc = key_defined(new_string)) > 0) { wprintw(win, "%s was bound to %s\n", vis_string, keyname(rc)); log_last_line(win); } else if (new_string != 0 && rc < 0) { wprintw(win, "%s conflicts with longer strings\n", vis_string); log_last_line(win); } rc = define_key(new_string, code); if (rc == ERR) { wprintw(win, "%s unchanged\n", code_name); log_last_line(win); } else if (new_string != 0) { wprintw(win, "%s is now bound to %s\n", vis_string, code_name); log_last_line(win); } else if (old_string != 0) { wprintw(win, "%s deleted\n", code_name); log_last_line(win); } if (vis_string != 0) free(vis_string); if (old_string != 0) free(old_string); } static void duplicate(WINDOW win, NCURSES_CONST char name, int code) { char value = tigetstr(name); if (value != 0) { const char prefix = 0; char temp[BUFSIZ]; if (!strncmp(value, "\033[", 2)) { prefix = "\033O"; } else if (!strncmp(value, "\033O", 2)) { prefix = "\033["; } if (prefix != 0) { sprintf(temp, "%s%s", prefix, value + 2); really_define_key(win, temp, code); } } } static void redefine(WINDOW win, char string, int code) { really_define_key(win, string, code); } static void remove_definition(WINDOW win, int code) { really_define_key(win, 0, code); } int main(int argc GCC_UNUSED, char argv[]GCC_UNUSED) { char fkeys[12]; int n; int ch; WINDOW win; unlink(MY_LOGFILE); initscr(); (void) cbreak(); /* take input chars one at a time, no wait for \n / (void) noecho(); / don't echo input / printw("This demo is best on xterm: it reverses the definitions for f1-f12,\n"); printw("adds duplicate definitions for cursor application and normal modes,\n"); printw("and removes any definitions for the mini keypad. Type any of those:\n"); refresh(); win = newwin(LINES - 3, COLS, 3, 0); scrollok(win, TRUE); keypad(win, TRUE); wmove(win, 0, 0); / we do the define_key() calls after keypad(), since the first call to * keypad() initializes the corresponding data. / for (n = 0; n < 12; ++n) { char name[10]; sprintf(name, "kf%d", n + 1); fkeys[n] = tigetstr(name); } for (n = 0; n < 12; ++n) { redefine(win, fkeys[11 - n], KEY_F(n + 1)); } duplicate(win, "kcub1", KEY_LEFT); duplicate(win, "kcuu1", KEY_UP); duplicate(win, "kcud1", KEY_DOWN); duplicate(win, "kcuf1", KEY_RIGHT); remove_definition(win, KEY_A1); remove_definition(win, KEY_A3); remove_definition(win, KEY_B2); remove_definition(win, KEY_C1); remove_definition(win, KEY_C3); really_define_key(win, "\033O", 1023); while ((ch = wgetch(win)) != ERR) { const char name = keyname(ch); wprintw(win, "Keycode %d, name %s\n", ch, name != 0 ? name : "<null>"); log_last_line(win); wclrtoeol(win); if (ch == 'q') break; } endwin(); ExitProgram(EXIT_FAILURE); } #else int main(void) { printf("This program requires the ncurses library\n"); ExitProgram(EXIT_FAILURE); } #endif

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