diff options
Diffstat (limited to 'src/emap/hashtable.c')
| -rw-r--r-- | src/emap/hashtable.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/emap/hashtable.c b/src/emap/hashtable.c index 6645a0d..1fead60 100644 --- a/src/emap/hashtable.c +++ b/src/emap/hashtable.c @@ -134,6 +134,32 @@ bool htreg_iterator_exists(int64 id) return i64db_exists(htreg->iterators, id); } +const char* htreg_iterator_firstkey(int64 id) +{ + struct DBIterator *it = i64db_get(htreg->iterators, id); + if (it) + { + union DBKey key; + it->first(it, &key); + if (dbi_exists(it)) + return key.str; + } + return NULL; +} + +const char* htreg_iterator_lastkey(int64 id) +{ + struct DBIterator *it = i64db_get(htreg->iterators, id); + if (it) + { + union DBKey key; + it->last(it, &key); + if (dbi_exists(it)) + return key.str; + } + return NULL; +} + const char* htreg_iterator_nextkey(int64 id) { struct DBIterator *it = i64db_get(htreg->iterators, id); @@ -147,6 +173,19 @@ const char* htreg_iterator_nextkey(int64 id) return NULL; } +const char* htreg_iterator_prevkey(int64 id) +{ + struct DBIterator *it = i64db_get(htreg->iterators, id); + if (it) + { + union DBKey key; + it->prev(it, &key); + if (dbi_exists(it)) + return key.str; + } + return NULL; +} + /** * Initializer. */ @@ -212,5 +251,8 @@ void htreg_defaults(void) htreg->destroy_iterator = htreg_destroy_iterator; htreg->iterator_check = htreg_iterator_check; htreg->iterator_exists = htreg_iterator_exists; + htreg->iterator_firstkey = htreg_iterator_firstkey; + htreg->iterator_lastkey = htreg_iterator_lastkey; htreg->iterator_nextkey = htreg_iterator_nextkey; + htreg->iterator_prevkey = htreg_iterator_prevkey; } |