--- /dev/null
+/****************************************************************************
+ * Copyright (c) 2006 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. *
+ ****************************************************************************/
+
+/*
+ * Author: Thomas E. Dickey, 2006
+ *
+ * $Id: foldkeys.c,v 1.3 2006/12/09 16:54:07 tom Exp $
+ *
+ * Demonstrate a method for altering key definitions at runtime.
+ *
+ * This program reads the key definitions, merging those which have xterm-style
+ * modifiers into their equivalents which have no modifiers. It does this
+ * merging only for the keys which are defined in the terminal description.
+ */
+
+#include <test.priv.h>
+
+#if defined(NCURSES_VERSION) && NCURSES_EXT_FUNCS
+
+#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
+
+#define MY_LOGFILE "demo_foldkeys.log"
+#define MY_KEYS (KEY_MAX + 1)
+
+/*
+ * 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);
+ }
+}
+
+/*
+ * ncurses has no API for telling what the actual last key-code is. That is
+ * a secret because the codes past KEY_MAX are computed at run-time and may
+ * differ depending on the previous calls to newterm(), etc. It is unlikely
+ * that one could have more than a thousand key definitions...
+ */
+#define MAX_KEYS 2000
+
+typedef struct {
+ const char *name;
+ const char *value;
+ int code;
+ int state;
+} KeyInfo;
+
+static void
+demo_foldkeys(void)
+{
+ KeyInfo info[MAX_KEYS];
+ int info_len = 0;
+ int merged = 0;
+ int code;
+ int j, k;
+
+ /*
+ * Tell ncurses that we want to use function keys. That will make it add
+ * any user-defined keys that appear in the terminfo.
+ */
+ keypad(stdscr, TRUE);
+
+ /*
+ * List the predefined keys using the strnames[] array.
+ */
+ for (code = 0; code < STRCOUNT; ++code) {
+ NCURSES_CONST char *name = strnames[code];
+ NCURSES_CONST char *value = tigetstr(name);
+ if (value != 0 && value != (NCURSES_CONST char *) -1) {
+ info[info_len].name = strnames[code];
+ info[info_len].code = key_defined(value);
+ info[info_len].value = value;
+ info[info_len].state = 0;
+ if (info[info_len].code > 0)
+ ++info_len;
+ }
+ }
+
+ /*
+ * We can get the names for user-defined keys from keyname(). It returns
+ * a name like KEY_foo for the predefined keys, which tigetstr() does not
+ * understand.
+ */
+ for (code = KEY_MAX; code < MAX_KEYS; ++code) {
+ NCURSES_CONST char *name = keyname(code);
+ if (name != 0) {
+ info[info_len].name = name;
+ info[info_len].code = code;
+ info[info_len].value = tigetstr(name);
+ info[info_len].state = 0;
+ ++info_len;
+ }
+ }
+ printw("Initially %d key definitions\n", info_len);
+
+ /*
+ * Look for keys that have xterm-style modifiers.
+ */
+ for (j = 0; j < info_len; ++j) {
+ int first, second;
+ char final[2];
+ char *value;
+ if (info[j].state == 0
+ && sscanf(info[j].value,
+ "\033[%d;%d%c",
+ &first,
+ &second,
+ final) == 3
+ && *final != ';'
+ && (value = strdup(info[j].value)) != 0) {
+ sprintf(value, "\033[%d%c", first, *final);
+ for (k = 0; k < info_len; ++k) {
+ if (info[k].state == 0
+ && !strcmp(info[k].value, value)) {
+ info[j].state = 1;
+ break;
+ }
+ }
+ if (info[j].state == 0) {
+ sprintf(value, "\033O%c", *final);
+ for (k = 0; k < info_len; ++k) {
+ if (info[k].state == 0
+ && !strcmp(info[k].value, value)) {
+ info[j].state = 1;
+ break;
+ }
+ }
+ }
+ if (info[j].state == 1) {
+ if ((define_key(info[j].value, info[k].code)) != ERR) {
+ printw("map %s to %s\n", info[j].value, info[k].value);
+ keyok(info[j].code, FALSE);
+ ++merged;
+ } else {
+ printw("? cannot define_key %d:%s\n", j, info[j].value);
+ }
+ } else {
+ printw("? cannot merge %d:%s\n", j, info[j].value);
+ }
+ free(value);
+ }
+ }
+ printw("Merged to %d key definitions\n", info_len - merged);
+}
+
+int
+main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
+{
+ int ch;
+#if HAVE_GETTIMEOFDAY
+ int secs, msecs;
+ struct timeval current, previous;
+#endif
+
+ unlink(MY_LOGFILE);
+
+ newterm(0, stdout, stdin);
+ (void) cbreak(); /* take input chars one at a time, no wait for \n */
+ (void) noecho(); /* don't echo input */
+
+ scrollok(stdscr, TRUE);
+ keypad(stdscr, TRUE);
+ move(0, 0);
+
+ demo_foldkeys();
+
+#if HAVE_GETTIMEOFDAY
+ gettimeofday(&previous, 0);
+#endif
+
+ while ((ch = getch()) != ERR) {
+ bool escaped = (ch >= MY_KEYS);
+ const char *name = keyname(escaped ? (ch - MY_KEYS) : ch);
+
+#if HAVE_GETTIMEOFDAY
+ gettimeofday(¤t, 0);
+ secs = current.tv_sec - previous.tv_sec;
+ msecs = (current.tv_usec - previous.tv_usec) / 1000;
+ if (msecs < 0) {
+ msecs += 1000;
+ --secs;
+ }
+ if (msecs >= 1000) {
+ secs += msecs / 1000;
+ msecs %= 1000;
+ }
+ printw("%6d.%03d ", secs, msecs);
+ previous = current;
+#endif
+ printw("Keycode %d, name %s%s\n",
+ ch,
+ escaped ? "ESC-" : "",
+ name != 0 ? name : "<null>");
+ log_last_line(stdscr);
+ clrtoeol();
+ if (ch == 'q')
+ break;
+ }
+ endwin();
+ ExitProgram(EXIT_SUCCESS);
+}
+#else
+int
+main(void)
+{
+ printf("This program requires the ncurses library\n");
+ ExitProgram(EXIT_FAILURE);
+}
+#endif
projects / ncurses.git / blobdiff