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-rw-r--r--src/emap/hashtable.c42
-rw-r--r--src/emap/hashtable.h3
-rw-r--r--src/emap/init.c3
-rw-r--r--src/emap/script_buildins.c39
-rw-r--r--src/emap/script_buildins.h3
5 files changed, 90 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;
}
diff --git a/src/emap/hashtable.h b/src/emap/hashtable.h
index 44712cd..403304e 100644
--- a/src/emap/hashtable.h
+++ b/src/emap/hashtable.h
@@ -31,7 +31,10 @@ struct htreg_interface
bool (*destroy_iterator) (int64 id);
bool (*iterator_check) (int64 id);
bool (*iterator_exists) (int64 id);
+ const char* (*iterator_firstkey) (int64 id);
+ const char* (*iterator_lastkey) (int64 id);
const char* (*iterator_nextkey) (int64 id);
+ const char* (*iterator_prevkey) (int64 id);
};
void htreg_defaults(void);
diff --git a/src/emap/init.c b/src/emap/init.c
index fefbc6c..9063735 100644
--- a/src/emap/init.c
+++ b/src/emap/init.c
@@ -183,7 +183,10 @@ HPExport void plugin_init (void)
addScriptCommand("htsize", "i", htSize);
addScriptCommand("htexists", "i", htExists);
addScriptCommand("htiterator", "i", htIterator);
+ addScriptCommand("htifirstkey", "i", htiFirstKey);
+ addScriptCommand("htilastkey", "i", htiLastKey);
addScriptCommand("htinextkey", "i", htiNextKey);
+ addScriptCommand("htiprevkey", "i", htiPrevKey);
addScriptCommand("hticheck", "i", htiCheck);
addScriptCommand("htidelete", "i", htiDelete);
addScriptCommand("setfakecells", "iii??", setFakeCells);
diff --git a/src/emap/script_buildins.c b/src/emap/script_buildins.c
index 703307a..78fb940 100644
--- a/src/emap/script_buildins.c
+++ b/src/emap/script_buildins.c
@@ -1991,6 +1991,32 @@ BUILDIN(htIterator)
return false; \
}
+BUILDIN(htiFirstKey)
+{
+ int64 id = script_getnum(st, 2);
+ checkHtIteratorExists(id);
+
+ const char * key = htreg->iterator_firstkey(id);
+ if (key)
+ script_pushstrcopy(st, key);
+ else
+ script_pushstrcopy(st, "");
+ return true;
+}
+
+BUILDIN(htiLastKey)
+{
+ int64 id = script_getnum(st, 2);
+ checkHtIteratorExists(id);
+
+ const char * key = htreg->iterator_lastkey(id);
+ if (key)
+ script_pushstrcopy(st, key);
+ else
+ script_pushstrcopy(st, "");
+ return true;
+}
+
BUILDIN(htiNextKey)
{
int64 id = script_getnum(st, 2);
@@ -2004,6 +2030,19 @@ BUILDIN(htiNextKey)
return true;
}
+BUILDIN(htiPrevKey)
+{
+ int64 id = script_getnum(st, 2);
+ checkHtIteratorExists(id);
+
+ const char * key = htreg->iterator_prevkey(id);
+ if (key)
+ script_pushstrcopy(st, key);
+ else
+ script_pushstrcopy(st, "");
+ return true;
+}
+
BUILDIN(htiCheck)
{
int64 id = script_getnum(st, 2);
diff --git a/src/emap/script_buildins.h b/src/emap/script_buildins.h
index 2066432..a72a035 100644
--- a/src/emap/script_buildins.h
+++ b/src/emap/script_buildins.h
@@ -82,7 +82,10 @@ BUILDIN(htDelete);
BUILDIN(htSize);
BUILDIN(htExists);
BUILDIN(htIterator);
+BUILDIN(htiFirstKey);
+BUILDIN(htiLastKey);
BUILDIN(htiNextKey);
+BUILDIN(htiPrevKey);
BUILDIN(htiCheck);
BUILDIN(htiDelete);
BUILDIN(setFakeCells);