new: better way of handling files db

include/database.h

@@ -5,43 +5,50 @@
 #define HASH_LEN 32
 
 typedef enum lm_query_index {
-  QUERY_CREATE_TABLE   = 0,
-  QUERY_INSERT_PACKAGE = 1,
-  QUERY_SELECT_PACKAGE = 2,
-  QUERY_DELETE_PACKAGE = 3,
-  QUERY_ALL_PACKAGE    = 4,
+  QUERY_CREATE_PACKAGE_TABLE  = 0,
+  QUERY_INSERT_PACKAGE_SINGLE = 1,
+  QUERY_SELECT_PACKAGE_SINGLE = 2,
+  QUERY_DELETE_PACKAGE_SINGLE = 3,
+  QUERY_SELECT_PACKAGE_ALL    = 4,
+  QUERY_CREATE_FILE_TABLE     = 5,
+  QUERY_INSERT_FILE_SINGLE    = 6,
+  QUERY_DELETE_FILE_ALL       = 7,
+  QUERY_SELECT_FILE_SINGLE    = 8,
+  QUERY_SELECT_FILE_ALL       = 9,
+  QUERY_UPDATE_FILE_1         = 10,
+  QUERY_UPDATE_FILE_2         = 11,
 } lm_query_index_t;
 
 extern char *queries[];
 
 typedef struct lm_database {
-  sqlite3_stmt *st;
-  sqlite3      *sql;
-  char         *dir;
-  lm_pkg_t     *pkg;
-} lm_database_t;
+  sqlite3      *packages_db;
+  sqlite3_stmt *packages_st;
 
-typedef bool (*lm_database_files_eachfunc_t)(lm_pkg_t *pkg, char *path, char *hash, void *data);
-typedef bool (*lm_database_keeps_eachfunc_t)(lm_pkg_t *pkg, char *path, void *data);
+  sqlite3      *files_db;
+  sqlite3_stmt *files_st;
+
+  lm_pkg_t *pkg;
+  char     *dir;
+} lm_database_t;
 
 lm_database_t *lm_database_new(char *path);
 void           lm_database_free(lm_database_t *db);
 
-bool lm_database_find(lm_database_t *db, lm_pkg_t *pkg, char *name);
-bool lm_database_next(lm_database_t *db, lm_pkg_t *pkg);
-bool lm_database_add(lm_database_t *db, lm_pkg_t *pkg);
-bool lm_database_del(lm_database_t *db, lm_pkg_t *pkg);
+bool lm_database_package_find(
+    lm_database_t *db, lm_pkg_t *pkg, char *name);               // finds a package by its name, package stored in *pkg
+bool lm_database_package_next(lm_database_t *db, lm_pkg_t *pkg); // gets the next package in the database
+bool lm_database_packege_add(lm_database_t *db, lm_pkg_t *pkg);  // adds a package to the database
+bool lm_database_package_del(lm_database_t *db, lm_pkg_t *pkg);  // delete a package from the database
 
-bool lm_database_files_foreach(lm_database_t *db, lm_pkg_t *pkg, lm_database_files_eachfunc_t func, void *data);
-bool lm_database_files_matches(lm_database_t *db, lm_pkg_t *pkg, char *path, char *hash);
-bool lm_database_files_add(lm_database_t *db, lm_pkg_t *pkg, char *path, char *hash);
-bool lm_database_files_get(lm_database_t *db, lm_pkg_t *pkg, char *path, char *hash);
-bool lm_database_files_del(lm_database_t *db, lm_pkg_t *pkg);
-
-bool lm_database_keeps_foreach(lm_database_t *db, lm_pkg_t *pkg, lm_database_keeps_eachfunc_t func, void *data);
-bool lm_database_keeps_load(lm_database_t *db, lm_pkg_t *pkg);
-bool lm_database_keeps_save(lm_database_t *db, lm_pkg_t *pkg);
-bool lm_database_keeps_del(lm_database_t *db, lm_pkg_t *pkg);
+bool lm_database_files_matches(
+    lm_database_t *db, char *path, char *hash);               // checks if the given file matches with the given hash
+bool lm_database_files_iskeep(lm_database_t *db, char *path); // checks if the given file is marked as keep
+bool lm_database_files_next(
+    lm_database_t *db, lm_pkg_t *pkg, char **path, char **hash, bool *keep); // gets the next file of the package
+bool lm_database_files_add(
+    lm_database_t *db, lm_pkg_t *pkg, char *path, char *hash); // adds a file to the files database
+bool lm_database_files_del(lm_database_t *db, lm_pkg_t *pkg);  // dels all files of belonging to a package
 
 bool  lm_database_changes_update(lm_database_t *db, lm_pkg_t *pkg, char *file);
 char *lm_database_changes_get(lm_database_t *db, lm_pkg_t *pkg);

include/error.h

@@ -115,6 +115,9 @@ typedef enum lm_error {
   LM_ERR_SendReadFail          = 107,
   LM_ERR_RecvBadSize           = 108,
   LM_ERR_RecvNotCompleted      = 109,
+  LM_ERR_DbSqlSelectFail       = 110,
+  LM_ERR_DbSqlDeleteFail       = 111,
+
 } lm_error_t;
 
 typedef struct lm_error_desc {