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
122
123
124
125
126
127
128
|
// CommandParser.hh for FbTk
// Copyright (c) 2007 Fluxbox Team (fluxgen at fluxbox dot org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#ifndef CommandParser_HH
#define CommandParser_HH
#include "ObjectRegistry.hh"
#include "StringUtil.hh"
using std::string;
namespace FbTk {
// helper for registering a function to parse arguments
#define REGISTER_COMMAND_PARSER(name, parser, type) \
namespace { \
static const bool p_register_command_##type_##name = FbTk::CommandParser<type>::instance().registerCommand(#name, &parser); \
}
// include some basic Command<void> creators
template <typename ClassName, typename Type>
Command<Type> *CommandCreator(const string &name, const string &args,
bool trusted) {
return new ClassName();
}
#define REGISTER_COMMAND(name, classname, type) \
namespace { \
static const bool p_register_##type_##name = FbTk::CommandParser<type>::instance().registerCommand(#name, &FbTk::CommandCreator<classname, type>); \
}
template <typename ClassName, typename Type>
Command<Type> *CommandCreatorWithArgs(const string &name, const string &args,
bool trusted) {
return new ClassName(args);
}
#define REGISTER_COMMAND_WITH_ARGS(name, classname, type) \
namespace { \
static const bool p_register_##type_##name = FbTk::CommandParser<type>::instance().registerCommand(#name, &FbTk::CommandCreatorWithArgs<classname, type>); \
}
template <typename ClassName, typename Type>
Command<Type> *UntrustedCommandCreator(const string &name, const string &args,
bool trusted) {
if (!trusted) return 0;
return new ClassName();
}
#define REGISTER_UNTRUSTED_COMMAND(name, classname, type) \
namespace { \
static const bool p_register_##type_##name = FbTk::CommandParser<type>::instance().registerCommand(#name, &FbTk::UntrustedCommandCreator<classname, type>); \
}
template <typename ClassName, typename Type>
Command<Type> *UntrustedCommandCreatorWithArgs(const string &name,
const string &args, bool trusted) {
if (!trusted) return 0;
return new ClassName(args);
}
#define REGISTER_UNTRUSTED_COMMAND_WITH_ARGS(name, classname, type) \
namespace { \
static const bool p_register_##type_##name = FbTk::CommandParser<type>::instance().registerCommand(#name, &FbTk::UntrustedCommandCreatorWithArgs<classname, type>); \
}
template <typename Type>
class CommandParser {
public:
typedef Command<Type> *(*Creator)(const string &, const string &, bool);
static CommandParser<Type> &instance() {
static CommandParser<Type> s_instance;
return s_instance;
}
Command<Type> *parse(const string &name, const string &args,
bool trusted = true) const {
string lc = StringUtil::toLower(name);
Creator creator = ObjectRegistry<Creator>::instance().lookup(lc);
if (creator)
return creator(lc, args, trusted);
return 0;
}
Command<Type> *parse(const string &line, bool trusted = true) const {
// separate args and command
string command, args;
StringUtil::getFirstWord(line, command, args);
StringUtil::removeFirstWhitespace(args);
StringUtil::removeTrailingWhitespace(args);
// now we parse
return parse(command, args, trusted);
}
bool registerCommand(string name, Creator creator) {
name = StringUtil::toLower(name);
return ObjectRegistry<Creator>::instance().registerObject(name,
creator);
}
private:
CommandParser() {}
~CommandParser() {}
};
} // end namespace FbTk
#endif // COMMANDPARSER_HH
|
