add libchat db

libchat/create_db.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python2
+# -*- coding: UTF-8 -*-
+# File: create_table.py
+# Date: Wed Mar 25 16:43:22 2015 +0800
+# Author: Yuxin Wu <ppwwyyxxc@gmail.com>
+
+import sys
+import os
+
+from libchat import SqliteLibChat
+
+if len(sys.argv) != 2:
+    print "Usage: {} <DB file name>"
+    sys.exit()
+
+db_name = sys.argv[1]
+
+if os.path.exists(db_name):
+    delete = raw_input("DB exists. Delete ? (y/n)")
+    if delete == 'y':
+        os.unlink(db_name)
+    else:
+        sys.exit()
+
+db = SqliteLibChat(db_name)
+db.create()

libchat/libchat.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python2
+# -*- coding: UTF-8 -*-
+# File: libchat.py
+# Date: Wed Mar 25 16:43:40 2015 +0800
+# Author: Yuxin Wu <ppwwyyxxc@gmail.com>
+import sqlite3
+import os
+
+class SqliteLibChat(object):
+
+    def __init__(self, db_file):
+        self.db_file = db_file
+        self.conn = sqlite3.connect(db_file)
+
+    def create(self):
+        c = self.conn.cursor()
+        c.execute("""
+          CREATE TABLE message (
+          source SMALLINT,
+          time INTEGER,
+          sender TEXT,
+          chatroom TEXT,
+          image COLLATE BINARY,
+          sound COLLATE BINARY,
+          extra_data COLLATE BINARY
+         )
+          """)
+        self.conn.commit()