1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/* ------------------------------------------------------------------------
* DynamicLibrary.hh
*
* This file is part of 3Dwm: The Three-Dimensional User Environment.
*
* 3Dwm: The Three-Dimensional User Environment:
* <http://www.3dwm.org>
*
* Chalmers Medialab
* <http://www.medialab.chalmers.se>
*
* ------------------------------------------------------------------------
* File created 2000-07-25 by Niklas Elmqvist.
*
* Copyright (c) 2000 Niklas Elmqvist <elm@3dwm.org>.
* ------------------------------------------------------------------------
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
* ------------------------------------------------------------------------
*/
#ifndef _DYNAMICLIBRARY_HH_
#define _DYNAMICLIBRARY_HH_
// -- System Includes
#include <string>
// -- Class Declarations
/**
* Simple dynamic link library (DLL) abstraction.
**/
class DynamicLibrary {
public:
/**
* Default constructor.
**/
DynamicLibrary() : _handle(0) { }
/**
* Constructor.
*
* @param library filename (must be in path or in local dir).
* @param now resolve symbols immediately if true, else on-demand.
**/
DynamicLibrary(const std::string &library, bool now = true) {
open(library, now);
}
/**
* Destructor.
**/
~DynamicLibrary() { close(); }
/**
* Open a dynamic link library (DLL) given a filename.
*
* @param library filename (must be in path or in local dir).
* @param now resolve symbols immediately if true, else on-demand.
**/
void open(const std::string &library, bool now = true);
/**
* Close the library.
**/
void close();
/**
* Retrieve the library name.
*
* @return the library name as a string.
**/
const std::string &getName() { return _name; }
/**
* Resolve a symbol in the library and return it.
*
* @param symbol the symbol to resolve.
* @return a pointer to the entity.
**/
void *resolve(const std::string &symbol);
/**
* Is the library open and ready to be used?
*
* @return true if it is, false otherwise.
**/
bool isOpen() { return _handle; }
protected:
/// Library handle
void *_handle;
/// Library name
std::string _name;
};
#endif /* DynamicLibrary.hh */
|
