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/*
* This file is part of gitg
*
* Copyright (C) 2012 - Jesse van den Kieboom
*
* gitg 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
* (at your option) any later version.
*
* gitg 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 gitg. If not, see <http://www.gnu.org/licenses/>.
*/
namespace GitgExt
{
/**
* Message identifier object.
*
* The message identifier object is used to identify messages sent over the
* MessageBus. The message identifier contains an object path and a method.
* Both are simple strings and combined describe the location of a message as
* a kind of method on an object.
*
* Valid object paths start with a forward slash and further path elements are
* seperated by more forward slashes. The first element needs to start with
* an alpha character (or underscore) while further characters can be
* alpha numeric or underscores. An example of a valid path is:
*
* /path/to/object
*
* Method names on the other hand do not have any restrictions.
*
*/
public class MessageId : Object
{
/**
* Message object path.
*/
public string object_path { construct set; get; }
/**
* Message method.
*/
public string method { construct set; get; }
/**
* Full id of the message.
*
* Get the full id of the message identifier. The full id is simply
* <path>.<method>
*
*/
public string id
{
owned get { return object_path + "." + method; }
}
/**
* Message hash.
*
* Get a hash for the message identifier suitable for use in a hash table.
* The hash is simply a string hash of the full id of the message identifier.
*
* @return the message identifier hash.
*
*/
public uint hash()
{
return id.hash();
}
/**
* Compare two messages for equality.
*
* Compare two messages. Two message identifiers are equal when they have
* the same object path and the same method name.
*
* @param other the message identifier to compare to.
*
* @return true if the message identifiers are equal, false otherwise.
*
*/
public bool equal(MessageId other)
{
return id == other.id;
}
/**
* Construct message identifier with object path and method.
*
* Create a new message identifier object with the given object path and
* method name.
*
* @param object_path the object path
* @param method the method name
*
* @return a new message identifier.
*
*/
public MessageId(string object_path, string method)
{
Object(object_path: object_path, method: method);
}
/**
* Create a copy of the message identifier.
*
* Create an exact copy of the message identifier.
*
* @return a new message identifier.
*
*/
public MessageId copy()
{
return new MessageId(object_path, method);
}
/**
* Check whether an object path is a valid path.
*
* Check whether the given path is a valid object path. A valid object path
* starts with a forward slash, followed by at least one alpha character,
* or underscore. Further valid characters include alphanumeric characters,
* underscores or path separators (forward slash).
*
* Example: /path/to/object
*
* @return true if the specified path is valid, false otherwise
*
*/
public static bool valid_object_path(string path)
{
if (path == null)
{
return false;
}
if (path[0] != '/')
{
return false;
}
int i = 0;
while (i < path.length)
{
var c = path[i];
if (c == '/')
{
++i;
if (i == path.length || !(c.isalpha() || c == '_'))
{
return false;
}
}
else if (!(c.isalnum() || c == '_'))
{
return false;
}
++i;
}
return true;
}
}
}
// ex:set ts=4 noet:
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