database: Implement insert() and size()

I don't have the DatabaseEntry base class yet, but I will soon!

Signed-off-by: Anna Schumaker <schumaker.anna@gmail.com>

design/database.txt

@@ -6,7 +6,7 @@
 		database.cpp
 
 == Depends ==
-idle file
+file
 
 Database: (lib/database.cpp)
 	Ocarina 5.x created a different save file format for each type of
@@ -64,27 +64,25 @@ Database: (lib/database.cpp)
 	...
 
 - API:
-	Database.Database(filename);
+	Database : Database(filename);
 		Initializes database to use ~/.ocarina{-debug}/filename.
 
-	void Database.load();
-		Reads data from file.  Call after static initialization of
-		Ocarina to ensure idle tasks are configured so loading can
-		happen at a later time.
+	void Database : load();
+		Reads data from file.
 
-	void Database.save();
+	void Database : save();
 		Saves data to file.
 
 	template <class T>
-	unsigned int Database.insert(T &);
+	unsigned int Database : insert(T &);
 		Adds a new item to the db, returns the id of the item
 
-	void Database.delete(unsigned int index);
+	void Database : delete(unsigned int index);
 		Mark db[index] as invalid (quick deletion)
 
-	unsigned Database.size();
+	unsigned Database : size();
 		Returns number of valid rows in the database
 
 	template <class T>
-	T &Database.operator[unsigned int index]
+	T &Database : operator[unsigned int index]
 		Return a reference to db[index]

include/database.h

@@ -6,13 +6,23 @@
 
 #include <file.h>
 
-class Database {
-	private:
-		File file;
+#include <vector>
 
-	public:
-		Database(std::string);
-		~Database();
+template <class T>
+class Database {
+private:
+	std::vector<T> db;
+	unsigned int _size;
+	File file;
+
+public:
+	Database(std::string);
+	~Database();
+
+	unsigned int insert(T);
+	const unsigned int &size();
 };
 
+#include "database.hpp"
+
 #endif /* OCARINA_DATABASE_H */

include/database.hpp

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2013 (c) Anna Schumaker.
+ *
+ * DO NOT INCLUDE THIS FILE DIRECTLY.  THIS IS A TEMPLATE DEFINITION FILE
+ * AND ONLY MEANT TO BE INCLUDED BY include/database.h!
+ */
+#ifndef OCARINA_DATABASE_HPP
+#define OCARINA_DATABASE_HPP
+
+template <class T>
+Database<T> :: Database(std::string filepath)
+	     : _size(0), file(filepath, FILE_TYPE_DATA)
+{
+}
+
+template <class T>
+Database<T> :: ~Database()
+{
+
+}
+
+template <class T>
+unsigned int Database<T> :: insert(T val)
+{
+	db.push_back(val);
+	_size++;
+	return db.size() - 1;
+}
+
+template <class T>
+const unsigned int &Database<T> :: size()
+{
+	return _size;
+}
+
+#endif /* OCARINA_DATABASE_HPP */

lib/database.cpp

@@ -3,11 +3,3 @@
  */
 #include <database.h>
 
-Database :: Database(std::string filepath)
-	  : file(filepath, FILE_TYPE_DATA)
-{
-}
-
-Database :: ~Database()
-{
-}

tests/database/database.cpp

@@ -2,9 +2,26 @@
  * Copyright 2013 (c) Anna Schumaker.
  */
 #include <database.h>
+#include <print.h>
+
+void test_insertion(Database<int> &db)
+{
+	unsigned int id;
+
+	print("\n");
+	for (unsigned int i = 1; i <= 10; i++) {
+		id = db.insert(i);
+		print("db[%u] = %u\n", id, i);
+	}
+
+	print("Database size: %u\n", db.size());
+}
 
 int main(int argc, char **argv)
 {
-	Database db("test.db");
+	Database<int> db("test.db");
+
+	test_insertion(db);
+
 	return 0;
 }