Commit | Line | Data |
---|---|---|
6c139d6e AL |
1 | // -*- mode: cpp; mode: fold -*- |
2 | // Description /*{{{*/ | |
3 | // $Id: configuration.cc,v 1.1 1998/07/07 04:17:10 jgg 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 | ##################################################################### */ | |
13 | /*}}}*/ | |
14 | // Include files /*{{{*/ | |
15 | #ifdef __GNUG__ | |
16 | #pragma implementation "pkglib/configuration.h" | |
17 | #endif | |
18 | #include <pkglib/configuration.h> | |
19 | #include <strutl.h> | |
20 | ||
21 | #include <stdio.h> | |
22 | /*}}}*/ | |
23 | Configuration *_config; | |
24 | ||
25 | // Configuration::Configuration - Constructor /*{{{*/ | |
26 | // --------------------------------------------------------------------- | |
27 | /* */ | |
28 | Configuration::Configuration() | |
29 | { | |
30 | Root = new Item; | |
31 | } | |
32 | /*}}}*/ | |
33 | // Configuration::Lookup - Lookup a single item /*{{{*/ | |
34 | // --------------------------------------------------------------------- | |
35 | /* This will lookup a single item by name below another item. It is a | |
36 | helper function for the main lookup function */ | |
37 | Configuration::Item *Configuration::Lookup(Item *Head,const char *S, | |
38 | unsigned long Len,bool Create) | |
39 | { | |
40 | int Res = 1; | |
41 | Item *I = Head->Child; | |
42 | Item **Last = &Head->Child; | |
43 | for (; I != 0; Last = &I->Next, I = I->Next) | |
44 | if ((Res = stringcasecmp(I->Value.begin(),I->Value.end(),S,S + Len)) == 0) | |
45 | break; | |
46 | ||
47 | if (Res == 0) | |
48 | return I; | |
49 | if (Create == false) | |
50 | return 0; | |
51 | ||
52 | I = new Item; | |
53 | I->Value = string(S,Len); | |
54 | I->Next = *Last; | |
55 | *Last = I; | |
56 | return I; | |
57 | } | |
58 | /*}}}*/ | |
59 | // Configuration::Lookup - Lookup a fully scoped item /*{{{*/ | |
60 | // --------------------------------------------------------------------- | |
61 | /* This performs a fully scoped lookup of a given name, possibly creating | |
62 | new items */ | |
63 | Configuration::Item *Configuration::Lookup(const char *Name,bool Create) | |
64 | { | |
65 | const char *Start = Name; | |
66 | const char *End = Start + strlen(Name); | |
67 | const char *TagEnd = Name; | |
68 | Item *Itm = Root; | |
69 | for (; End - TagEnd > 2; TagEnd++) | |
70 | { | |
71 | if (TagEnd[0] == ':' && TagEnd[1] == ':') | |
72 | { | |
73 | Itm = Lookup(Itm,Start,TagEnd - Start,Create); | |
74 | if (Itm == 0) | |
75 | return 0; | |
76 | TagEnd = Start = TagEnd + 2; | |
77 | } | |
78 | } | |
79 | ||
80 | Itm = Lookup(Itm,Start,End - Start,Create); | |
81 | if (Itm == 0) | |
82 | return 0; | |
83 | return Itm; | |
84 | } | |
85 | /*}}}*/ | |
86 | // Configuration::Find - Find a value /*{{{*/ | |
87 | // --------------------------------------------------------------------- | |
88 | /* */ | |
89 | string Configuration::Find(const char *Name,const char *Default) | |
90 | { | |
91 | Item *Itm = Lookup(Name,false); | |
92 | if (Itm == 0 || Itm->Value.empty() == true) | |
93 | return Default; | |
94 | return Itm->Value; | |
95 | } | |
96 | /*}}}*/ | |
97 | // Configuration::FindI - Find an integer value /*{{{*/ | |
98 | // --------------------------------------------------------------------- | |
99 | /* */ | |
100 | int Configuration::FindI(const char *Name,int Default) | |
101 | { | |
102 | Item *Itm = Lookup(Name,false); | |
103 | if (Itm == 0 || Itm->Value.empty() == true) | |
104 | return Default; | |
105 | ||
106 | char *End; | |
107 | int Res = strtol(Itm->Value.c_str(),&End,0); | |
108 | if (End == Itm->Value.c_str()) | |
109 | return Default; | |
110 | ||
111 | return Res; | |
112 | } | |
113 | /*}}}*/ | |
114 | // Configuration::Set - Set a value /*{{{*/ | |
115 | // --------------------------------------------------------------------- | |
116 | /* */ | |
117 | void Configuration::Set(const char *Name,string Value) | |
118 | { | |
119 | Item *Itm = Lookup(Name,true); | |
120 | if (Itm == 0) | |
121 | return; | |
122 | Itm->Value = Value; | |
123 | } | |
124 | /*}}}*/ | |
125 | // Configuration::Set - Set an integer value /*{{{*/ | |
126 | // --------------------------------------------------------------------- | |
127 | /* */ | |
128 | void Configuration::Set(const char *Name,int Value) | |
129 | { | |
130 | Item *Itm = Lookup(Name,true); | |
131 | if (Itm == 0) | |
132 | return; | |
133 | char S[300]; | |
134 | snprintf(S,sizeof(S),"%i",Value); | |
135 | Itm->Value = S; | |
136 | } | |
137 | /*}}}*/ |