diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ternary.c | 13 | ||||
| -rw-r--r-- | src/ternary.h | 8 |
2 files changed, 16 insertions, 5 deletions
diff --git a/src/ternary.c b/src/ternary.c index df93ead..0a4ee09 100644 --- a/src/ternary.c +++ b/src/ternary.c @@ -1,4 +1,4 @@ -/* $Id: ternary.c,v 1.5 2001-05-23 17:59:53 rjkaes Exp $ +/* $Id: ternary.c,v 1.6 2001-08-30 16:52:09 rjkaes Exp $ * * This module creates a Ternary Search Tree which can store both string * keys, and arbitrary data for each key. It works similar to a hash, and @@ -294,7 +294,8 @@ int ternary_destroy(TERNARY tno, void (*freeptr)(void *)) * TE_TOOFULL tree is full, so no new elements can be added. * Exceptions: none */ -int ternary_insert(TERNARY tno, const char *s, void *data) +int ternary_insert_replace(TERNARY tno, const char *s, void *data, + short int replace) { int cur; /* index of current tree */ Ttree *tree; /* pointer to tree structure */ @@ -314,7 +315,13 @@ int ternary_insert(TERNARY tno, const char *s, void *data) while ((pp = *p)) { if ((d = *s - pp->splitchar) == 0) { if (*s++ == 0) { - return TE_EXISTS; + if (!replace) + return TE_EXISTS; + else { + free(pp->eqkid); + pp->eqkid = (Tnode *)data; + return TE_NONE; + } } p = &(pp->eqkid); } else if (d < 0) diff --git a/src/ternary.h b/src/ternary.h index fcb6c17..5fb6d51 100644 --- a/src/ternary.h +++ b/src/ternary.h @@ -1,4 +1,4 @@ -/* $Id: ternary.h,v 1.2 2000-09-26 04:59:20 rjkaes Exp $ +/* $Id: ternary.h,v 1.3 2001-08-30 16:52:09 rjkaes Exp $ * * See 'ternary.c' for a detailed description. * @@ -58,7 +58,11 @@ extern char te_errbuf[256]; extern TERNARY ternary_new(void); extern int ternary_destroy(TERNARY tno, void (*freeptr)(void *)); -extern int ternary_insert(TERNARY tno, const char *s, void *data); +#define ternary_insert(x, y, z) ternary_insert_replace(x, y, z, 0) +#define ternary_replace(x, y, z) ternary_insert_replace(x, y, z, 1) + +extern int ternary_insert_replace(TERNARY tno, const char *s, void *data, + short int replace); extern int ternary_search(TERNARY tno, const char *s, void **data); #endif |