mysql_db now supports import and dump of gzip and bzip2 compressed files

library/database/mysql_db

@@ -117,15 +117,25 @@ def db_delete(cursor, db):
     return True
 
 def db_dump(host, user, password, db_name, target):
-    res = os.system("/usr/bin/mysqldump -q -h "+host+" -u "+user+ " --password="+password+" "
-            +db_name+" > "
-            +target)
+    cmd = '/usr/bin/mysqldump -q -h ' + host + ' -u ' + user + ' --password=' + password + ' ' + db_name
+    if os.path.splitext(target)[-1] == '.gz':
+        cmd = cmd + ' | gzip > ' + target
+    elif os.path.splitext(target)[-1] == '.bz2':
+        cmd = cmd + ' | bzip2 > ' + target
+    else:
+        cmd = cmd + ' > ' + target
+    res = os.system(cmd)
     return (res == 0)
 
 def db_import(host, user, password, db_name, target):
-    res = os.system("/usr/bin/mysql -h "+host+" -u "+user+" --password="+password+" "
-            +db_name+" < "
-            +target)
+    cmd = '/usr/bin/mysql -h ' + host + ' -u ' + user + ' --password=' + password + ' ' + db_name
+    if os.path.splitext(target)[-1] == '.gz':
+        cmd = 'gunzip < ' + target + ' | ' + cmd
+    elif os.path.splitext(target)[-1] == '.bz2':
+        cmd = 'bunzip2 < ' + target + ' | ' + cmd
+    else:
+        cmd = cmd + ' < ' + target
+    res = os.system(cmd)
     return (res == 0)
 
 def db_create(cursor, db, encoding, collation):