// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: configuration.h,v 1.3 1998/07/12 23:58:45 jgg Exp $
+// $Id: configuration.h,v 1.16 2002/11/11 06:55:50 doogie Exp $
/* ######################################################################
Configuration Class
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".
##################################################################### */
/*}}}*/
-// Header section: pkglib
#ifndef PKGLIB_CONFIGURATION_H
#define PKGLIB_CONFIGURATION_H
-#ifdef __GNUG__
-#pragma interface "apt-pkg/configuration.h"
-#endif
+#include <regex.h>
#include <string>
+#include <vector>
+#include <iostream>
+
+#include <apt-pkg/macros.h>
+
+#ifndef APT_8_CLEANER_HEADERS
+using std::string;
+#endif
class Configuration
{
+ public:
+
struct Item
{
- string Value;
- string Tag;
+ std::string Value;
+ std::string Tag;
Item *Parent;
Item *Child;
Item *Next;
- Item() : Child(0), Next(0) {};
+
+ std::string FullTag(const Item *Stop = 0) const;
+
+ Item() : Parent(0), Child(0), Next(0) {};
};
+
+ private:
+
Item *Root;
+ bool ToFree;
+
+ Item *Lookup(Item *Head,const char *S,unsigned long const &Len,bool const &Create);
+ Item *Lookup(const char *Name,const bool &Create);
+ inline const Item *Lookup(const char *Name) const
+ {
+ return ((Configuration *)this)->Lookup(Name,false);
+ }
- 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 FindDir(const char *Name,const char *Default = 0);
- int FindI(const char *Name,int Default = 0);
-
- void Set(const char *Name,string Value);
- void Set(const char *Name,int Value);
+ std::string Find(const char *Name,const char *Default = 0) const;
+ std::string Find(std::string const &Name,const char *Default = 0) const {return Find(Name.c_str(),Default);};
+ std::string Find(std::string const &Name, std::string const &Default) const {return Find(Name.c_str(),Default.c_str());};
+ std::string FindFile(const char *Name,const char *Default = 0) const;
+ std::string FindDir(const char *Name,const char *Default = 0) const;
+ /** return a list of child options
+ *
+ * Options like Acquire::Languages are handled as lists which
+ * can be overridden and have a default. For the later two a comma
+ * separated list of values is supported.
+ *
+ * \param Name of the parent node
+ * \param Default list of values separated by commas */
+ std::vector<std::string> FindVector(const char *Name, std::string const &Default = "", bool const Keys = false) const;
+ std::vector<std::string> FindVector(std::string const &Name, std::string const &Default = "", bool const Keys = false) const { return FindVector(Name.c_str(), Default, Keys); };
+
+ int FindI(const char *Name,int const &Default = 0) const;
+ int FindI(std::string const &Name,int const &Default = 0) const {return FindI(Name.c_str(),Default);};
+ bool FindB(const char *Name,bool const &Default = false) const;
+ bool FindB(std::string const &Name,bool const &Default = false) const {return FindB(Name.c_str(),Default);};
+ std::string FindAny(const char *Name,const char *Default = 0) const;
+
+ inline void Set(const std::string &Name,const std::string &Value) {Set(Name.c_str(),Value);};
+ void CndSet(const char *Name,const std::string &Value);
+ void CndSet(const char *Name,const int Value);
+ void Set(const char *Name,const std::string &Value);
+ void Set(const char *Name,const int &Value);
+ inline bool Exists(const std::string &Name) const {return Exists(Name.c_str());};
+ bool Exists(const char *Name) const;
+ bool ExistsAny(const char *Name) const;
+
+ void MoveSubTree(char const * const OldRoot, char const * const NewRoot);
+
+ // clear a whole tree
+ void Clear(const std::string &Name);
+ void Clear();
+
+ // remove a certain value from a list (e.g. the list of "APT::Keep-Fds")
+ void Clear(std::string const &List, std::string const &Value);
+ void Clear(std::string const &List, int const &Value);
+
+ inline const Item *Tree(const char *Name) const {return Lookup(Name);};
+
+ inline void Dump() { Dump(std::clog); };
+ void Dump(std::ostream& str);
+ void Dump(std::ostream& str, char const * const root,
+ char const * const format, bool const emptyValue);
+
+ Configuration(const Item *Root);
Configuration();
+ ~Configuration();
+
+ /** \brief match a string against a configurable list of patterns */
+ class MatchAgainstConfig
+ {
+ std::vector<regex_t *> patterns;
+ APT_HIDDEN void clearPatterns();
+
+ public:
+ MatchAgainstConfig(char const * Config);
+ virtual ~MatchAgainstConfig();
+
+ /** \brief Returns \b true for a string matching one of the patterns */
+ bool Match(char const * str) const;
+ bool Match(std::string const &str) const { return Match(str.c_str()); };
+
+ /** \brief returns if the matcher setup was successful */
+ bool wasConstructedSuccessfully() const { return patterns.empty() == false; }
+ };
};
extern Configuration *_config;
+bool ReadConfigFile(Configuration &Conf,const std::string &FName,
+ bool const &AsSectional = false,
+ unsigned const &Depth = 0);
+
+bool ReadConfigDir(Configuration &Conf,const std::string &Dir,
+ bool const &AsSectional = false,
+ unsigned const &Depth = 0);
+
#endif
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