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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: configuration.h,v 1.11 1999/04/03 00:34:33 jgg Exp $
/* ######################################################################
Configuration Class
This class provides a configuration file and command line parser
for a tree-oriented configuration environment. All runtime configuration
is stored in here.
Each configuration name is given as a fully scoped string such as
Foo::Bar
And has associated with it a text string. The Configuration class only
provides storage and lookup for this tree, other classes provide
configuration file formats (and parsers/emitters if needed).
Most things can get by quite happily with,
cout << _config->Find("Foo::Bar") << endl;
A special extension, support for ordered lists is provided by using the
special syntax, "block::list::" the trailing :: designates the
item as a list. To access the list you must use the tree function on
"block::list".
##################################################################### */
/*}}}*/
#ifndef PKGLIB_CONFIGURATION_H
#define PKGLIB_CONFIGURATION_H
#ifdef __GNUG__
#pragma interface "apt-pkg/configuration.h"
#endif
#include <string>
class Configuration
{
struct Item
{
string Value;
string Tag;
Item *Parent;
Item *Child;
Item *Next;
string FullTag() const;
Item() : Parent(0), Child(0), Next(0) {};
};
Item *Root;
Item *Lookup(Item *Head,const char *S,unsigned long Len,bool Create);
Item *Lookup(const char *Name,bool Create);
public:
string Find(const char *Name,const char *Default = 0);
string Find(string Name,const char *Default = 0) {return Find(Name.c_str(),Default);};
string FindFile(const char *Name,const char *Default = 0);
string FindDir(const char *Name,const char *Default = 0);
int FindI(const char *Name,int Default = 0);
int FindI(string Name,bool Default = 0) {return FindI(Name.c_str(),Default);};
bool FindB(const char *Name,bool Default = false);
bool FindB(string Name,bool Default = false) {return FindB(Name.c_str(),Default);};
inline void Set(string Name,string Value) {Set(Name.c_str(),Value);};
void Set(const char *Name,string Value);
void Set(const char *Name,int Value);
inline bool Exists(string Name) {return Exists(Name.c_str());};
bool Exists(const char *Name);
inline const Item *Tree(const char *Name) {return Lookup(Name,false);};
void Dump();
Configuration();
};
extern Configuration *_config;
bool ReadConfigFile(Configuration &Conf,string File);
#endif
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