Introduce properties table

This is a new internal properties storage for attributes that can be
defined both in the item and album scope, with the item scope taking
priority.

The big advantage is a better distinguishment from an undefined, default
value. It also makes easier to retrieve attributes with properly defined
scope priorities.

1 files changed, 62 insertions, 0 deletions

diff --git a/src/properties-table.h b/src/properties-table.h
new file mode 100644
index 0000000..4a1a9ed
--- /dev/null
+++ b/src/properties-table.h
@@ -0,0 +1,62 @@
+/*   Cataract - Static web photo gallery generator
+ *   Copyright (C) 2014 Tomas Bzatek <tbzatek@users.sourceforge.net>
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation; either version 2
+ *   of the License, or any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+#ifndef __CGG__PROPERTIES_TABLE_H__
+#define __CGG__PROPERTIES_TABLE_H__
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+
+typedef GHashTable PropertiesTable;
+
+/*
+ *   properties_table_new: creates new property table
+ */
+PropertiesTable * properties_table_new ();
+
+/*
+ *   properties_table_dup: creates deep copy of the table
+ */
+PropertiesTable * properties_table_dup (PropertiesTable *table);
+
+/*
+ *   properties_table_add_*: adds new item in the table, duplicating data
+ */
+void properties_table_add_string (PropertiesTable *table, int property_id, const gchar *value);
+void properties_table_add_int    (PropertiesTable *table, int property_id, long int value);
+void properties_table_add_bool   (PropertiesTable *table, int property_id, gboolean value);
+void properties_table_add_double (PropertiesTable *table, int property_id, double value);
+
+/*
+ *   properties_table_get_*: gets data for the specified id, setting *value, returning TRUE if found
+ */
+const gchar * properties_table_get_string (PropertiesTable *table, int property_id);
+gboolean properties_table_get_int         (PropertiesTable *table, int property_id, long int *value);
+gboolean properties_table_get_bool        (PropertiesTable *table, int property_id, gboolean *value);
+gboolean properties_table_get_double      (PropertiesTable *table, int property_id, double *value);
+
+/*
+ *   properties_table_free: destroys properties table and frees all data
+ */
+void properties_table_free (PropertiesTable *table);
+
+
+G_END_DECLS
+
+#endif /* __CGG__PROPERTIES_TABLE_H__ */