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27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Thomas E. Dickey <dickey@clark.net> 1998 *
31 ****************************************************************************/
36 ** Add keycode/string to tries-tree.
40 #include <curses.priv.h>
42 MODULE_ID("$Id: add_tries.c,v 1.1 1998/11/08 00:04:18 tom Exp $")
44 #define SET_TRY(dst,src) if ((dst->ch = *src++) == 128) dst->ch = '\0'
45 #define CMP_TRY(a,b) ((a)? (a == b) : (b == 128))
47 void _nc_add_to_try(struct tries **tree, char *str, unsigned short code)
49 static bool out_of_memory = FALSE;
50 struct tries *ptr, *savedptr;
51 unsigned char *txt = (unsigned char *)str;
53 if (txt == 0 || *txt == '\0' || out_of_memory || code == 0)
57 ptr = savedptr = (*tree);
60 unsigned char cmp = *txt;
62 while (!CMP_TRY(ptr->ch, cmp)
66 if (CMP_TRY(ptr->ch, cmp)) {
67 if (*(++txt) == '\0') {
76 if ((ptr->sibling = typeCalloc(struct tries,1)) == 0) {
81 savedptr = ptr = ptr->sibling;
88 } else { /* (*tree) == 0 :: First sequence to be added */
89 savedptr = ptr = (*tree) = typeCalloc(struct tries,1);
100 /* at this point, we are adding to the try. ptr->child == 0 */
103 ptr->child = typeCalloc(struct tries,1);
108 out_of_memory = TRUE;
110 while ((ptr = savedptr) != 0) {
111 savedptr = ptr->child;