/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2009,2010 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 *
****************************************************************************/
/****************************************************************************
- * Author: Thomas E. Dickey <dickey@clark.net> 1998 *
+ * Author: Thomas E. Dickey 1998-on *
****************************************************************************/
/*
#include <curses.priv.h>
-MODULE_ID("$Id: add_tries.c,v 1.1 1998/11/08 00:04:18 tom Exp $")
+MODULE_ID("$Id: add_tries.c,v 1.10 2010/12/19 01:31:14 tom Exp $")
#define SET_TRY(dst,src) if ((dst->ch = *src++) == 128) dst->ch = '\0'
#define CMP_TRY(a,b) ((a)? (a == b) : (b == 128))
-void _nc_add_to_try(struct tries **tree, char *str, unsigned short code)
+NCURSES_EXPORT(int)
+_nc_add_to_try(TRIES ** tree, const char *str, unsigned code)
{
- static bool out_of_memory = FALSE;
- struct tries *ptr, *savedptr;
- unsigned char *txt = (unsigned char *)str;
-
- if (txt == 0 || *txt == '\0' || out_of_memory || code == 0)
- return;
-
- if ((*tree) != 0) {
- ptr = savedptr = (*tree);
-
- for (;;) {
- unsigned char cmp = *txt;
-
- while (!CMP_TRY(ptr->ch, cmp)
- && ptr->sibling != 0)
- ptr = ptr->sibling;
-
- if (CMP_TRY(ptr->ch, cmp)) {
- if (*(++txt) == '\0') {
- ptr->value = code;
- return;
- }
- if (ptr->child != 0)
- ptr = ptr->child;
- else
- break;
- } else {
- if ((ptr->sibling = typeCalloc(struct tries,1)) == 0) {
- out_of_memory = TRUE;
- return;
- }
-
- savedptr = ptr = ptr->sibling;
- SET_TRY(ptr,txt);
- ptr->value = 0;
-
- break;
- }
- } /* end for (;;) */
- } else { /* (*tree) == 0 :: First sequence to be added */
- savedptr = ptr = (*tree) = typeCalloc(struct tries,1);
-
- if (ptr == 0) {
- out_of_memory = TRUE;
- return;
+ TRIES *ptr, *savedptr;
+ unsigned const char *txt = (unsigned const char *) str;
+
+ T((T_CALLED("_nc_add_to_try(%p, %s, %u)"),
+ (void *) *tree, _nc_visbuf(str), code));
+ if (txt == 0 || *txt == '\0' || code == 0)
+ returnCode(ERR);
+
+ if ((*tree) != 0) {
+ ptr = savedptr = (*tree);
+
+ for (;;) {
+ unsigned char cmp = *txt;
+
+ while (!CMP_TRY(ptr->ch, cmp)
+ && ptr->sibling != 0)
+ ptr = ptr->sibling;
+
+ if (CMP_TRY(ptr->ch, cmp)) {
+ if (*(++txt) == '\0') {
+ ptr->value = (unsigned short) code;
+ returnCode(OK);
+ }
+ if (ptr->child != 0)
+ ptr = ptr->child;
+ else
+ break;
+ } else {
+ if ((ptr->sibling = typeCalloc(TRIES, 1)) == 0) {
+ returnCode(ERR);
}
- SET_TRY(ptr,txt);
+ savedptr = ptr = ptr->sibling;
+ SET_TRY(ptr, txt);
ptr->value = 0;
- }
- /* at this point, we are adding to the try. ptr->child == 0 */
+ break;
+ }
+ } /* end for (;;) */
+ } else { /* (*tree) == 0 :: First sequence to be added */
+ savedptr = ptr = (*tree) = typeCalloc(TRIES, 1);
- while (*txt) {
- ptr->child = typeCalloc(struct tries,1);
+ if (ptr == 0) {
+ returnCode(ERR);
+ }
- ptr = ptr->child;
+ SET_TRY(ptr, txt);
+ ptr->value = 0;
+ }
- if (ptr == 0) {
- out_of_memory = TRUE;
+ /* at this point, we are adding to the try. ptr->child == 0 */
- while ((ptr = savedptr) != 0) {
- savedptr = ptr->child;
- free(ptr);
- }
+ while (*txt) {
+ ptr->child = typeCalloc(TRIES, 1);
- return;
- }
+ ptr = ptr->child;
- SET_TRY(ptr,txt);
- ptr->value = 0;
+ if (ptr == 0) {
+ while ((ptr = savedptr) != 0) {
+ savedptr = ptr->child;
+ free(ptr);
+ }
+ returnCode(ERR);
}
- ptr->value = code;
- return;
+ SET_TRY(ptr, txt);
+ ptr->value = 0;
+ }
+
+ ptr->value = (unsigned short) code;
+ returnCode(OK);
}