Imported Upstream version 0.18.1upstream/0.18.1

1 files changed, 113 insertions, 0 deletions

diff --git a/plugins/shotwell-data-imports/FSpotMetaTable.vala b/plugins/shotwell-data-imports/FSpotMetaTable.vala
new file mode 100644
index 0000000..b2d16eb
--- /dev/null
+++ b/plugins/shotwell-data-imports/FSpotMetaTable.vala
@@ -0,0 +1,113 @@
+/* Copyright 2011-2014 Yorba Foundation
+ *
+ * This software is licensed under the GNU Lesser General Public License
+ * (version 2.1 or later).  See the COPYING file in this distribution.
+ */
+
+namespace DataImports.FSpot.Db {
+
+/**
+ * The value object for the "meta" table, representing a single database row.
+ */
+public class FSpotMetaRow : Object {
+    // ignore the ID
+    public string name;
+    public string data;
+}
+
+/**
+ * This class represents the F-Spot meta table, which stores some essential
+ * meta-data for the whole database. It is implemented as a simple dictionary
+ * where each row in the table is a key/value pair.
+ *
+ * The meta table implementation is the only one that throws a database error
+ * if something goes wrong because:
+ *  * it is essential to read the content of that table in order to identify
+ *    the version of the database and select the correct behavior,
+ *  * this table is read at the very beginning of the process so any failure
+ *    will occur immediately,
+ *  * failing to read this table means that there is no point in reading the
+ *    attempting to read the rest of the database so we might as well abort.
+ */
+public class FSpotMetaTable : FSpotDatabaseTable<FSpotMetaRow> {
+    
+    public FSpotMetaTable(Sqlite.Database db) {
+        base(db);
+        set_behavior(FSpotMetaBehavior.get_instance());
+    }
+    
+    public string? get_data(string name) throws DatabaseError {
+        string[] columns = behavior.list_columns();
+        string column_list = string.joinv(", ", columns);
+        string sql = "SELECT %s FROM %s WHERE name=?".printf(column_list, table_name);
+        Sqlite.Statement stmt;
+        int res = fspot_db.prepare_v2(sql, -1, out stmt);
+        if (res != Sqlite.OK)
+            throw_error("Statement failed: %s".printf(sql), res);
+        
+        res = stmt.bind_text(1, name);
+        if (res != Sqlite.OK)
+            throw_error("Bind failed for name %s".printf(name), res);
+        
+        res = stmt.step();
+        if (res != Sqlite.ROW) {
+            if (res != Sqlite.DONE)
+                throw_error("FSpotMetaTable.get_data", res);
+            
+            return null;
+        }
+        
+        FSpotMetaRow row;
+        behavior.build_row(stmt, out row);
+        return row.data;
+    }
+    
+    public string? get_app_version() throws DatabaseError {
+        return get_data("F-Spot Version");
+    }
+    
+    public string? get_db_version() throws DatabaseError {
+        return get_data("F-Spot Database Version");
+    }
+    
+    public int64 get_hidden_tag_id() throws DatabaseError {
+        string id_str = get_data("Hidden Tag Id");
+        if(id_str != null) {
+            return int64.parse(id_str);
+        } else {
+            return -1;
+        }
+    }
+}
+
+public class FSpotMetaBehavior : FSpotTableBehavior<FSpotMetaRow>, Object {
+    public static const string TABLE_NAME = "Meta";
+    
+    private static FSpotMetaBehavior instance;
+    
+    private FSpotMetaBehavior() {
+    }
+    
+    public static FSpotMetaBehavior get_instance() {
+        if (instance == null)
+            instance = new FSpotMetaBehavior();
+        return instance;
+    }
+    
+    public string get_table_name() {
+        return TABLE_NAME;
+    }
+    
+    public string[] list_columns() {
+        return { "name", "data" };
+    }
+    
+    public void build_row(Sqlite.Statement stmt, out FSpotMetaRow row, int offset = 0) {
+        row = new FSpotMetaRow();
+        row.name = stmt.column_text(offset + 0);
+        row.data = stmt.column_text(offset + 1);
+    }
+}
+
+}
+