+int get_action_key (struct KeyBinding * keybindings, char * name) {
+// Return key matching name in keybindings.
+ int i = 0;
+ while (strcmp(keybindings[i].name, name) )
+ i++;
+ return keybindings[i].key; }
+
+char * get_keyname(int keycode) {
+// Translate some keycodes to readable names of max 9 chars.
+ char * keyname;
+ keyname = malloc(15);
+ if (32 < keycode && keycode < 127)
+ sprintf(keyname, "%c", keycode);
+ else if (keycode == 9)
+ sprintf(keyname, "TAB");
+ else if (keycode == 10)
+ sprintf(keyname, "RETURN");
+ else if (keycode == 27)
+ sprintf(keyname, "ESCAPE");
+ else if (keycode == 32)
+ sprintf(keyname, "SPACE");
+ else if (keycode == KEY_UP)
+ sprintf(keyname, "UP");
+ else if (keycode == KEY_DOWN)
+ sprintf(keyname, "DOWN");
+ else if (keycode == KEY_LEFT)
+ sprintf(keyname, "LEFT");
+ else if (keycode == KEY_RIGHT)
+ sprintf(keyname, "RIGHT");
+ else if (keycode == KEY_HOME)
+ sprintf(keyname, "HOME");
+ else if (keycode == KEY_BACKSPACE)
+ sprintf(keyname, "BACKSPACE");
+ else if (keycode >= KEY_F0 && keycode <= KEY_F(63)) {
+ int f = keycode - KEY_F0;
+ sprintf(keyname, "F%d", f); }
+ else if (keycode == KEY_DC)
+ sprintf(keyname, "DELETE");
+ else if (keycode == KEY_IC)
+ sprintf(keyname, "INSERT");
+ else if (keycode == KEY_NPAGE)
+ sprintf(keyname, "NEXT PAGE");
+ else if (keycode == KEY_PPAGE)
+ sprintf(keyname, "PREV PAGE");
+ else if (keycode == KEY_END)
+ sprintf(keyname, "END");
+ else
+ sprintf(keyname, "(unknown)");
+ return keyname; }
+
+void draw_keys_window (struct Win * win) {
+// Draw keybinding window.
+ struct World * world = (struct World *) win->data;
+ struct KeysWinData * keyswindata = (struct KeysWinData *) world->keyswindata;
+ struct KeyBinding * keybindings = world->keybindings;
+ int offset = 0;
+ if (keyswindata->max >= win->height) {
+ if (keyswindata->select > win->height / 2)
+ if (keyswindata->select < (keyswindata->max - (win->height / 2)))
+ offset = keyswindata->select - (win->height / 2);
+ else
+ offset = keyswindata->max - win->height + 1; }
+ int keydescwidth = 9; // max length assured by get_keyname()
+ char * keydesc = malloc(keydescwidth + 1);
+ attr_t attri;
+ int y, x;
+ char * keyname;
+ for (y = 0; 0 != keybindings[offset + y].name && y < win->height; y++) {
+ attri = 0;
+ if (y == keyswindata->select - offset) {
+ attri = A_REVERSE;
+ if (1 == keyswindata->edit)
+ attri = attri | A_BLINK; }
+ keyname = get_keyname(keybindings[y + offset].key);
+ snprintf(keydesc, keydescwidth + 1, "%-9s", keyname);
+ free(keyname);
+ for (x = 0; x < win->width; x++)
+ if (strlen(keydesc) > x)
+ mvwaddch(win->curses_win, y, x, keydesc[x] | attri);
+ else if (strlen(keydesc) < x && x < strlen(keybindings[y + offset].name) + strlen(keydesc) + 1)
+ mvwaddch(win->curses_win, y, x, keybindings[y + offset].name[x - strlen(keydesc) - 1] | attri);
+ else
+ mvwaddch(win->curses_win, y, x, ' ' | attri); }
+ free(keydesc);
+ if (y < win->height)
+ for (; y < win->height; y++)
+ for (x = 0; x < win->width; x++)
+ mvwaddch(win->curses_win, y, x, ' '); }
+
+void init_keybindings(struct World * world) {
+// Initialize keybindings from file "keybindings".
+ FILE * file = fopen("keybindings", "r");
+ int lines = 0;
+ int c = 0;
+ int linemax = 0;
+ int c_count = 0;
+ while (EOF != c) {
+ c_count++;
+ c = getc(file);
+ if ('\n' == c) {
+ if (c_count > linemax)
+ linemax = c_count;
+ c_count = 0;
+ lines++; } }
+ struct KeyBinding * keybindings = malloc(lines * sizeof(struct KeyBinding));
+ fseek(file, 0, SEEK_SET);
+ char * command = malloc(linemax);
+ char commcount = 0;
+ char * digits = malloc(3);
+ char digicount = 0;
+ int key, digimax;
+ int keycount = 0;
+ c = getc(file);
+ while (EOF != c) {
+ if ('\n' == c) {
+ keybindings[keycount].name = calloc(commcount, sizeof(char));
+ memcpy(keybindings[keycount].name, command, commcount);
+ keybindings[keycount].key = key;
+ keycount++;
+ digicount = 0;
+ commcount = 0; }
+ else if (-1 != digicount)
+ if (' ' == c) {
+ key = 0;
+ digimax = digicount - 1;
+ while (digicount > 0) {
+ digicount--;
+ key = key + ((digits[digicount] - 48) * pow(10, digimax - digicount)); }
+ digicount = -1; }
+ else {
+ digits[digicount] = c;
+ digicount++; }
+ else {
+ command[commcount] = c;
+ commcount++; }
+ c = getc(file); }
+ free(command);
+ free(digits);
+ fclose(file);
+ struct KeysWinData * keyswindata = malloc(sizeof(struct KeysWinData));
+ keyswindata->max = lines - 1;
+ keyswindata->select = 0;
+ keyswindata->edit = 0;
+ world->keybindings = keybindings;
+ world->keyswindata = keyswindata; }
+
+void save_keybindings(struct World * world) {
+// Write keybindings to keybindings file.
+ struct KeysWinData * keyswindata = (struct KeysWinData *) world->keyswindata;
+ struct KeyBinding * keybindings = world->keybindings;
+ FILE * file = fopen("keybindings", "w");
+ int linemax = 0;
+ int i;
+ for (i = 0; i <= keyswindata->max; i++)
+ if (strlen(keybindings[i].name) > linemax)
+ linemax = strlen(keybindings[i].name);
+ linemax = linemax + 6; // + 6 = + 3 digits + whitespace + newline + null byte
+ char * line = malloc(linemax);
+ for (i = 0; i <= keyswindata->max; i++) {
+ snprintf(line, linemax, "%d %s\n", keybindings[i].key, keybindings[i].name);
+ fwrite(line, sizeof(char), strlen(line), file); }
+ free(line);
+ fclose(file); }
+