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Diffstat (limited to 'pluginmanager.hpp')
-rw-r--r-- | pluginmanager.hpp | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/pluginmanager.hpp b/pluginmanager.hpp new file mode 100644 index 0000000..2415acf --- /dev/null +++ b/pluginmanager.hpp | |||
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1 | /* | ||
2 | * pluginmanager.hpp | ||
3 | * | ||
4 | * Copyright 2009 Max Christian Pohle <coderz@gmx.de> | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License | ||
17 | * along with this program; if not, write to the Free Software | ||
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | ||
19 | * MA 02110-1301, USA. | ||
20 | */ | ||
21 | |||
22 | #ifndef pluginmanager | ||
23 | #define pluginmanager | ||
24 | #define PLUGIN_ENGINE_VERSION 1 | ||
25 | |||
26 | #include <string> | ||
27 | #include <map> | ||
28 | #include <sstream> | ||
29 | #include <dlfcn.h> | ||
30 | #include <iostream> | ||
31 | #include <list> | ||
32 | |||
33 | #include "plugins/plugin.hpp" | ||
34 | |||
35 | using namespace std; | ||
36 | |||
37 | template <class T> | ||
38 | class PluginManager | ||
39 | { | ||
40 | private: | ||
41 | int engine_version; | ||
42 | typedef T create(); | ||
43 | map<string,create*> plugins; | ||
44 | typename map<string, create*>::iterator iter; | ||
45 | |||
46 | public: | ||
47 | PluginManager<T>() : engine_version(PLUGIN_ENGINE_VERSION) {} | ||
48 | |||
49 | T get_instance(string t) | ||
50 | { | ||
51 | iter = plugins.find(t); | ||
52 | if (iter != plugins.end()) | ||
53 | { return iter->second(); } | ||
54 | } | ||
55 | |||
56 | list<string> list_plugins() | ||
57 | { | ||
58 | list<string> retval; | ||
59 | for(iter=plugins.begin(); iter!=plugins.end(); ++iter) | ||
60 | { retval.push_front(iter->first); } | ||
61 | return retval; | ||
62 | } | ||
63 | |||
64 | void load_plugin(string filename) | ||
65 | { | ||
66 | std::stringstream serr; | ||
67 | char* dlsym_error; | ||
68 | std::cerr << "\n> OPENING " << filename << "..."; | ||
69 | void* plugin2open = dlopen(filename.c_str(), RTLD_LAZY); | ||
70 | if (dlsym_error = dlerror()) | ||
71 | { | ||
72 | std::stringstream a; | ||
73 | a << | ||
74 | std::string(filename) << | ||
75 | std::string(" is not a valid plugin\n\t") << | ||
76 | std::string(dlsym_error); | ||
77 | throw (char*) a.str().c_str(); | ||
78 | } | ||
79 | else | ||
80 | { | ||
81 | std::cerr << "done.\n"; | ||
82 | } | ||
83 | |||
84 | create* f_creator = (create*) dlsym(plugin2open, "create"); | ||
85 | if (dlsym_error = dlerror()) | ||
86 | { | ||
87 | throw (char*)"plugin has no creation-interface" | ||
88 | ", so is obviously no subclass of 'Plugin'"; | ||
89 | } | ||
90 | else | ||
91 | { | ||
92 | std::cout << "> LOADING " << filename << "..."; | ||
93 | plugins.insert(make_pair(filename, f_creator)); | ||
94 | std::cout << "done.\n"; | ||
95 | } | ||
96 | } | ||
97 | }; | ||
98 | |||
99 | #endif | ||