WvStreams
monikers.cc
1/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 *
3 * XPLC - Cross-Platform Lightweight Components
4 * Copyright (C) 2002, Net Integration Technologies, Inc.
5 * Copyright (C) 2002-2003, Pierre Phaneuf
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public License
9 * as published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 */
22
23#include <xplc/core.h>
24#include <xplc/utils.h>
25#include "monikers.h"
26
27#define MONIKER_SEPARATOR_CHAR ':'
28
34
35MonikerService::~MonikerService() {
36 MonikerNode* node;
37 MonikerNode* ptr;
38
39 node = monikers;
40
41 while(node) {
42 ptr = node;
43 node = node->next;
44 delete ptr;
45 }
46
47 monikers = 0;
48}
49
50IObject* MonikerService::resolve(const char* aName) {
51 MonikerNode* node;
52 IServiceManager* servmgr;
53 IObject* obj = 0;
54 IMoniker* moniker;
55 char* name = strdup(aName);
56 char* rest = strchr(name, MONIKER_SEPARATOR_CHAR);
57
58 node = monikers;
59
60 if(rest) {
61 *rest = 0;
62 ++rest;
63 }
64
65 while(node) {
66 if(strcmp(name, node->name) == 0) {
67 servmgr = XPLC_getServiceManager();
68 if(!servmgr)
69 break;
70
71 obj = servmgr->getObject(node->uuid);
72 servmgr->release();
73
74 if(rest) {
75 moniker = mutate<IMoniker>(obj);
76 if(moniker) {
77 obj = moniker->resolve(rest);
78 moniker->release();
79 } else
80 obj = 0;
81 }
82
83 break;
84 }
85
86 node = node->next;
87 }
88
89 free(name);
90
91 return obj;
92}
93
94void MonikerService::registerObject(const char* aName, const UUID& aUuid) {
95 MonikerNode* node;
96
97 /*
98 * FIXME: we should do something about registering a name that
99 * contains the separator character.
100 */
101
102 node = monikers;
103
104 while(node) {
105 if(strcmp(aName, node->name) == 0)
106 break;
107
108 node = node->next;
109 }
110
111 /*
112 * FIXME: maybe add a "replace" bool parameter? Or would this
113 * encourage moniker hijacking too much?
114 */
115 if(node)
116 return;
117
118 node = new MonikerNode(aName, aUuid, monikers);
119 monikers = node;
120}
121
An interface for registering objects so they can be retrieved using a moniker.
An interface for obtaining an IObject given a moniker string.
virtual IObject * resolve(const char *moniker)=0
Given a moniker string, return the IObject it refers to, or NULL if no objects match.
The basic interface which is included by all other XPLC interfaces and objects.
virtual unsigned int release()=0
Indicate that you are finished using this object.
virtual IObject * getObject(const UUID &)=0
Get the object corresponding to the given UUID.
virtual IObject * resolve(const char *)
Given a moniker string, return the IObject it refers to, or NULL if no objects match.
Definition monikers.cc:50
virtual void registerObject(const char *, const UUID &)
Register an object to be retrieved with a moniker.
Definition monikers.cc:94
#define UUID_MAP_END
Marks the end of an interface map.
#define UUID_MAP_BEGIN(component)
Start the interface map for "component".
#define UUID_MAP_ENTRY(iface)
Add an entry to an interface map.