[geodb] GeoDB memory allocation and I/O

src/geodb.h

@@ -0,0 +1,69 @@
+#ifndef GEONAMES_DICTIONARY_H
+#define GEONAMES_DICTIONARY_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "bloom.h"
+#include "config.h"
+#include "geonames.h"
+#include "sparkey/sparkey.h"
+#include "sparkey/sparkey-internal.h"
+#include "string_utils.h"
+#include "trie.h"
+#include "trie_search.h"
+
+#define GEODB_TRIE_FILENAME "geodb.trie"
+#define GEODB_TRIE_FILENAME_LEN strlen(GEODB_TRIE_FILENAME)
+#define GEODB_BLOOM_FILTER_FILENAME "geodb.bloom"
+#define GEODB_BLOOM_FILTER_FILENAME_LEN strlen(GEODB_BLOOM_FILTER_FILENAME)
+#define GEODB_HASH_FILENAME "geodb.spi"
+#define GEODB_HASH_FILENAME_LEN strlen(GEODB_HASH_FILENAME)
+#define GEODB_LOG_FILENAME "geodb.spl"
+#define GEODB_LOG_FILENAME_LEN strlen(GEODB_LOG_FILENAME)
+
+// Can manipulate the bit-packed values separately, or access the whole value
+typedef union geodb_value {
+    uint32_t value;
+    struct {
+        uint32_t components:16;
+        uint32_t count:16;
+    };
+} geodb_value_t;
+
+typedef struct geodb {
+    trie_t *trie;
+    bloom_filter_t *bloom_filter;
+    sparkey_hashreader *hash_reader;
+    sparkey_logiter *log_iter;
+    char_array *value_buf;
+    geoname_t *geoname;
+    gn_postal_code_t *postal_code;
+} geodb_t;
+
+typedef struct gn_geocoding_result {
+    int start;
+    int end;
+    geonames_generic_t result;
+} gn_geocoding_result_t;
+
+geodb_t *get_geodb(void);
+bool geodb_load(char *dir);
+
+bool geodb_module_setup(char *dir);
+void geodb_module_teardown(void);
+
+void geodb_destroy(geodb_t *self);
+
+geonames_generic_t *geodb_get_len(char *key, size_t len);
+geonames_generic_t *geodb_get(char *key);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif