]>
Commit | Line | Data |
---|---|---|
1 | // -*- mode: cpp; mode: fold -*- | |
2 | // Description /*{{{*/ | |
3 | // $Id: configuration.h,v 1.16 2002/11/11 06:55:50 doogie Exp $ | |
4 | /* ###################################################################### | |
5 | ||
6 | Configuration Class | |
7 | ||
8 | This class provides a configuration file and command line parser | |
9 | for a tree-oriented configuration environment. All runtime configuration | |
10 | is stored in here. | |
11 | ||
12 | Each configuration name is given as a fully scoped string such as | |
13 | Foo::Bar | |
14 | And has associated with it a text string. The Configuration class only | |
15 | provides storage and lookup for this tree, other classes provide | |
16 | configuration file formats (and parsers/emitters if needed). | |
17 | ||
18 | Most things can get by quite happily with, | |
19 | cout << _config->Find("Foo::Bar") << endl; | |
20 | ||
21 | A special extension, support for ordered lists is provided by using the | |
22 | special syntax, "block::list::" the trailing :: designates the | |
23 | item as a list. To access the list you must use the tree function on | |
24 | "block::list". | |
25 | ||
26 | ##################################################################### */ | |
27 | /*}}}*/ | |
28 | #ifndef PKGLIB_CONFIGURATION_H | |
29 | #define PKGLIB_CONFIGURATION_H | |
30 | ||
31 | #ifdef __GNUG__ | |
32 | #pragma interface "apt-pkg/configuration.h" | |
33 | #endif | |
34 | ||
35 | #include <string> | |
36 | #include <iostream> | |
37 | ||
38 | using std::string; | |
39 | ||
40 | class Configuration | |
41 | { | |
42 | public: | |
43 | ||
44 | struct Item | |
45 | { | |
46 | string Value; | |
47 | string Tag; | |
48 | Item *Parent; | |
49 | Item *Child; | |
50 | Item *Next; | |
51 | ||
52 | string FullTag(const Item *Stop = 0) const; | |
53 | ||
54 | Item() : Parent(0), Child(0), Next(0) {}; | |
55 | }; | |
56 | ||
57 | private: | |
58 | ||
59 | Item *Root; | |
60 | bool ToFree; | |
61 | ||
62 | Item *Lookup(Item *Head,const char *S,unsigned long Len,bool Create); | |
63 | Item *Lookup(const char *Name,bool Create); | |
64 | inline const Item *Lookup(const char *Name) const | |
65 | { | |
66 | return ((Configuration *)this)->Lookup(Name,false); | |
67 | } | |
68 | ||
69 | public: | |
70 | ||
71 | string Find(const char *Name,const char *Default = 0) const; | |
72 | string Find(string Name,const char *Default = 0) const {return Find(Name.c_str(),Default);}; | |
73 | string FindFile(const char *Name,const char *Default = 0) const; | |
74 | string FindDir(const char *Name,const char *Default = 0) const; | |
75 | int FindI(const char *Name,int Default = 0) const; | |
76 | int FindI(string Name,int Default = 0) const {return FindI(Name.c_str(),Default);}; | |
77 | bool FindB(const char *Name,bool Default = false) const; | |
78 | bool FindB(string Name,bool Default = false) const {return FindB(Name.c_str(),Default);}; | |
79 | string FindAny(const char *Name,const char *Default = 0) const; | |
80 | ||
81 | inline void Set(string Name,string Value) {Set(Name.c_str(),Value);}; | |
82 | void CndSet(const char *Name,string Value); | |
83 | void Set(const char *Name,string Value); | |
84 | void Set(const char *Name,int Value); | |
85 | ||
86 | inline bool Exists(string Name) const {return Exists(Name.c_str());}; | |
87 | bool Exists(const char *Name) const; | |
88 | bool ExistsAny(const char *Name) const; | |
89 | ||
90 | void Clear(string Name); | |
91 | ||
92 | inline const Item *Tree(const char *Name) const {return Lookup(Name);}; | |
93 | ||
94 | inline void Dump() { Dump(std::clog); }; | |
95 | void Dump(std::ostream& str); | |
96 | ||
97 | Configuration(const Item *Root); | |
98 | Configuration(); | |
99 | ~Configuration(); | |
100 | }; | |
101 | ||
102 | extern Configuration *_config; | |
103 | ||
104 | bool ReadConfigFile(Configuration &Conf,string FName,bool AsSectional = false, | |
105 | unsigned Depth = 0); | |
106 | ||
107 | bool ReadConfigDir(Configuration &Conf,string Dir,bool AsSectional = false, | |
108 | unsigned Depth = 0); | |
109 | ||
110 | #endif |