[BROKEN] Work on adding hash tables.

1 files changed, 41 insertions, 0 deletions

diff --git a/hash_help.inc b/hash_help.inc
new file mode 100644
index 00000000..19463be4
--- /dev/null
+++ b/hash_help.inc
@@ -0,0 +1,41 @@
+#ifndef TYPE
+#error "Set TYPE to something before including this header"
+#else
+
+int HASH_PUT(TYPE) ( TABLE(TYPE)* table, TYPE* value) {
+	// TODO genicify the hash function
+	unsigned long h = hash(value->key.mem) % table->size;
+	table->values[h] = *value;
+
+	/* TODO conflict resolution */
+
+	++table->item_count;
+	return 0;
+}
+
+int HASH_INIT(TYPE) ( TABLE(TYPE)* table, int init_size ) {
+	/*
+	 * TODO parts of table might not get properly initialized to 0
+	 */
+	table->values     = calloc(sizeof(table->values), init_size);
+	table->size       = init_size;
+	table->item_count = 0;
+	return 0;
+}
+
+TYPE* HASH_GET(TYPE) ( TABLE(TYPE)* table, char* key ) {
+	unsigned long h = hash(key) % table->size;
+	TYPE* mem = (table->values + h);
+	if (mem == NULL) {
+		return 0;
+	} else if (strcmp(mem->key.mem, key) == 0) {
+		return mem;
+	} else {
+		/* TODO fix retrival on invalid key */
+	}
+	return 0;
+}
+
+#endif /* TYPE */
+
+// vim: ft=c