From 8fde723961709118837153cdf94f150c680e10e9 Mon Sep 17 00:00:00 2001 From: David Kalnischkies Date: Sat, 17 Jul 2010 20:04:44 +0200 Subject: * apt-pkg/cacheset.cc: - move them back to the library as they look stable now --- apt-pkg/cacheset.h | 375 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 375 insertions(+) create mode 100644 apt-pkg/cacheset.h (limited to 'apt-pkg/cacheset.h') diff --git a/apt-pkg/cacheset.h b/apt-pkg/cacheset.h new file mode 100644 index 000000000..c8c3dd096 --- /dev/null +++ b/apt-pkg/cacheset.h @@ -0,0 +1,375 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +/** \file cacheset.h + Wrappers around std::set to have set::iterators which behave + similar to the Iterators of the cache structures. + + Provides also a few helper methods which work with these sets */ + /*}}}*/ +#ifndef APT_CACHESET_H +#define APT_CACHESET_H +// Include Files /*{{{*/ +#include +#include +#include +#include +#include +#include + +#include +#include + /*}}}*/ +namespace APT { +class PackageSet; +class VersionSet; +class CacheSetHelper { /*{{{*/ +/** \class APT::CacheSetHelper + Simple base class with a lot of virtual methods which can be overridden + to alter the behavior or the output of the CacheSets. + + This helper is passed around by the static methods in the CacheSets and + used every time they hit an error condition or something could be + printed out. +*/ +public: /*{{{*/ + CacheSetHelper(bool const &ShowError = true) : ShowError(ShowError) {}; + virtual ~CacheSetHelper() {}; + + virtual void showTaskSelection(PackageSet const &pkgset, string const &pattern) {}; + virtual void showRegExSelection(PackageSet const &pkgset, string const &pattern) {}; + virtual void showSelectedVersion(pkgCache::PkgIterator const &Pkg, pkgCache::VerIterator const Ver, + string const &ver, bool const &verIsRel) {}; + + virtual pkgCache::PkgIterator canNotFindPkgName(pkgCacheFile &Cache, std::string const &str); + virtual PackageSet canNotFindTask(pkgCacheFile &Cache, std::string pattern); + virtual PackageSet canNotFindRegEx(pkgCacheFile &Cache, std::string pattern); + virtual PackageSet canNotFindPackage(pkgCacheFile &Cache, std::string const &str); + virtual VersionSet canNotFindAllVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg); + virtual VersionSet canNotFindInstCandVer(pkgCacheFile &Cache, + pkgCache::PkgIterator const &Pkg); + virtual VersionSet canNotFindCandInstVer(pkgCacheFile &Cache, + pkgCache::PkgIterator const &Pkg); + virtual pkgCache::VerIterator canNotFindNewestVer(pkgCacheFile &Cache, + pkgCache::PkgIterator const &Pkg); + virtual pkgCache::VerIterator canNotFindCandidateVer(pkgCacheFile &Cache, + pkgCache::PkgIterator const &Pkg); + virtual pkgCache::VerIterator canNotFindInstalledVer(pkgCacheFile &Cache, + pkgCache::PkgIterator const &Pkg); + + bool showErrors() const { return ShowError; }; + bool showErrors(bool const &newValue) { if (ShowError == newValue) return ShowError; else return ((ShowError = newValue) == false); }; + /*}}}*/ +protected: + bool ShowError; +}; /*}}}*/ +class PackageSet : public std::set { /*{{{*/ +/** \class APT::PackageSet + + Simple wrapper around a std::set to provide a similar interface to + a set of packages as to the complete set of all packages in the + pkgCache. */ +public: /*{{{*/ + /** \brief smell like a pkgCache::PkgIterator */ + class const_iterator : public std::set::const_iterator {/*{{{*/ + public: + const_iterator(std::set::const_iterator x) : + std::set::const_iterator(x) {} + + operator pkgCache::PkgIterator(void) { return **this; } + + inline const char *Name() const {return (**this).Name(); } + inline std::string FullName(bool const &Pretty) const { return (**this).FullName(Pretty); } + inline std::string FullName() const { return (**this).FullName(); } + inline const char *Section() const {return (**this).Section(); } + inline bool Purge() const {return (**this).Purge(); } + inline const char *Arch() const {return (**this).Arch(); } + inline pkgCache::GrpIterator Group() const { return (**this).Group(); } + inline pkgCache::VerIterator VersionList() const { return (**this).VersionList(); } + inline pkgCache::VerIterator CurrentVer() const { return (**this).CurrentVer(); } + inline pkgCache::DepIterator RevDependsList() const { return (**this).RevDependsList(); } + inline pkgCache::PrvIterator ProvidesList() const { return (**this).ProvidesList(); } + inline pkgCache::PkgIterator::OkState State() const { return (**this).State(); } + inline const char *CandVersion() const { return (**this).CandVersion(); } + inline const char *CurVersion() const { return (**this).CurVersion(); } + inline pkgCache *Cache() const { return (**this).Cache(); }; + inline unsigned long Index() const {return (**this).Index();}; + // we have only valid iterators here + inline bool end() const { return false; }; + + friend std::ostream& operator<<(std::ostream& out, const_iterator i) { return operator<<(out, (*i)); } + + inline pkgCache::Package const * operator->() const { + return &***this; + }; + }; + // 103. set::iterator is required to be modifiable, but this allows modification of keys + typedef APT::PackageSet::const_iterator iterator; + /*}}}*/ + + using std::set::insert; + inline void insert(pkgCache::PkgIterator const &P) { if (P.end() == false) std::set::insert(P); }; + inline void insert(PackageSet const &pkgset) { insert(pkgset.begin(), pkgset.end()); }; + + /** \brief returns all packages in the cache who belong to the given task + + A simple helper responsible for search for all members of a task + in the cache. Optional it prints a a notice about the + packages chosen cause of the given task. + \param Cache the packages are in + \param pattern name of the task + \param helper responsible for error and message handling */ + static APT::PackageSet FromTask(pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper); + static APT::PackageSet FromTask(pkgCacheFile &Cache, std::string const &pattern) { + CacheSetHelper helper; + return APT::PackageSet::FromTask(Cache, pattern, helper); + } + + /** \brief returns all packages in the cache whose name matchs a given pattern + + A simple helper responsible for executing a regular expression on all + package names in the cache. Optional it prints a a notice about the + packages chosen cause of the given package. + \param Cache the packages are in + \param pattern regular expression for package names + \param helper responsible for error and message handling */ + static APT::PackageSet FromRegEx(pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper); + static APT::PackageSet FromRegEx(pkgCacheFile &Cache, std::string const &pattern) { + CacheSetHelper helper; + return APT::PackageSet::FromRegEx(Cache, pattern, helper); + } + + /** \brief returns all packages specified by a string + + \param Cache the packages are in + \param string String the package name(s) should be extracted from + \param helper responsible for error and message handling */ + static APT::PackageSet FromString(pkgCacheFile &Cache, std::string const &string, CacheSetHelper &helper); + static APT::PackageSet FromString(pkgCacheFile &Cache, std::string const &string) { + CacheSetHelper helper; + return APT::PackageSet::FromString(Cache, string, helper); + } + + /** \brief returns a package specified by a string + + \param Cache the package is in + \param string String the package name should be extracted from + \param helper responsible for error and message handling */ + static pkgCache::PkgIterator FromName(pkgCacheFile &Cache, std::string const &string, CacheSetHelper &helper); + static pkgCache::PkgIterator FromName(pkgCacheFile &Cache, std::string const &string) { + CacheSetHelper helper; + return APT::PackageSet::FromName(Cache, string, helper); + } + + /** \brief returns all packages specified on the commandline + + Get all package names from the commandline and executes regex's if needed. + No special package command is supported, just plain names. + \param Cache the packages are in + \param cmdline Command line the package names should be extracted from + \param helper responsible for error and message handling */ + static APT::PackageSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper); + static APT::PackageSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline) { + CacheSetHelper helper; + return APT::PackageSet::FromCommandLine(Cache, cmdline, helper); + } + + struct Modifier { + enum Position { NONE, PREFIX, POSTFIX }; + unsigned short ID; + const char * const Alias; + Position Pos; + Modifier (unsigned short const &id, const char * const alias, Position const &pos) : ID(id), Alias(alias), Pos(pos) {}; + }; + + /** \brief group packages by a action modifiers + + At some point it is needed to get from the same commandline + different package sets grouped by a modifier. Take + apt-get install apt awesome- + as an example. + \param Cache the packages are in + \param cmdline Command line the package names should be extracted from + \param mods list of modifiers the method should accept + \param fallback the default modifier group for a package + \param helper responsible for error and message handling */ + static std::map GroupedFromCommandLine( + pkgCacheFile &Cache, const char **cmdline, + std::list const &mods, + unsigned short const &fallback, CacheSetHelper &helper); + static std::map GroupedFromCommandLine( + pkgCacheFile &Cache, const char **cmdline, + std::list const &mods, + unsigned short const &fallback) { + CacheSetHelper helper; + return APT::PackageSet::GroupedFromCommandLine(Cache, cmdline, + mods, fallback, helper); + } + + enum Constructor { UNKNOWN, REGEX, TASK }; + Constructor getConstructor() const { return ConstructedBy; }; + + PackageSet() : ConstructedBy(UNKNOWN) {}; + PackageSet(Constructor const &by) : ConstructedBy(by) {}; + /*}}}*/ +private: /*{{{*/ + Constructor ConstructedBy; + /*}}}*/ +}; /*}}}*/ +class VersionSet : public std::set { /*{{{*/ +/** \class APT::VersionSet + + Simple wrapper around a std::set to provide a similar interface to + a set of versions as to the complete set of all versions in the + pkgCache. */ +public: /*{{{*/ + /** \brief smell like a pkgCache::VerIterator */ + class const_iterator : public std::set::const_iterator {/*{{{*/ + public: + const_iterator(std::set::const_iterator x) : + std::set::const_iterator(x) {} + + operator pkgCache::VerIterator(void) { return **this; } + + inline pkgCache *Cache() const { return (**this).Cache(); }; + inline unsigned long Index() const {return (**this).Index();}; + // we have only valid iterators here + inline bool end() const { return false; }; + + inline pkgCache::Version const * operator->() const { + return &***this; + }; + + inline int CompareVer(const pkgCache::VerIterator &B) const { return (**this).CompareVer(B); }; + inline const char *VerStr() const { return (**this).VerStr(); }; + inline const char *Section() const { return (**this).Section(); }; + inline const char *Arch() const { return (**this).Arch(); }; + inline const char *Arch(bool const pseudo) const { return (**this).Arch(pseudo); }; + inline pkgCache::PkgIterator ParentPkg() const { return (**this).ParentPkg(); }; + inline pkgCache::DescIterator DescriptionList() const { return (**this).DescriptionList(); }; + inline pkgCache::DescIterator TranslatedDescription() const { return (**this).TranslatedDescription(); }; + inline pkgCache::DepIterator DependsList() const { return (**this).DependsList(); }; + inline pkgCache::PrvIterator ProvidesList() const { return (**this).ProvidesList(); }; + inline pkgCache::VerFileIterator FileList() const { return (**this).FileList(); }; + inline bool Downloadable() const { return (**this).Downloadable(); }; + inline const char *PriorityType() const { return (**this).PriorityType(); }; + inline string RelStr() const { return (**this).RelStr(); }; + inline bool Automatic() const { return (**this).Automatic(); }; + inline bool Pseudo() const { return (**this).Pseudo(); }; + inline pkgCache::VerFileIterator NewestFile() const { return (**this).NewestFile(); }; + }; + /*}}}*/ + // 103. set::iterator is required to be modifiable, but this allows modification of keys + typedef APT::VersionSet::const_iterator iterator; + + using std::set::insert; + inline void insert(pkgCache::VerIterator const &V) { if (V.end() == false) std::set::insert(V); }; + inline void insert(VersionSet const &verset) { insert(verset.begin(), verset.end()); }; + + /** \brief specifies which version(s) will be returned if non is given */ + enum Version { + /** All versions */ + ALL, + /** Candidate and installed version */ + CANDANDINST, + /** Candidate version */ + CANDIDATE, + /** Installed version */ + INSTALLED, + /** Candidate or if non installed version */ + CANDINST, + /** Installed or if non candidate version */ + INSTCAND, + /** Newest version */ + NEWEST + }; + + /** \brief returns all versions specified on the commandline + + Get all versions from the commandline, uses given default version if + non specifically requested and executes regex's if needed on names. + \param Cache the packages and versions are in + \param cmdline Command line the versions should be extracted from + \param helper responsible for error and message handling */ + static APT::VersionSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline, + APT::VersionSet::Version const &fallback, CacheSetHelper &helper); + static APT::VersionSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline, + APT::VersionSet::Version const &fallback) { + CacheSetHelper helper; + return APT::VersionSet::FromCommandLine(Cache, cmdline, fallback, helper); + } + static APT::VersionSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline) { + return APT::VersionSet::FromCommandLine(Cache, cmdline, CANDINST); + } + + static APT::VersionSet FromString(pkgCacheFile &Cache, std::string pkg, + APT::VersionSet::Version const &fallback, CacheSetHelper &helper, + bool const &onlyFromName = false); + static APT::VersionSet FromString(pkgCacheFile &Cache, std::string pkg, + APT::VersionSet::Version const &fallback) { + CacheSetHelper helper; + return APT::VersionSet::FromString(Cache, pkg, fallback, helper); + } + static APT::VersionSet FromString(pkgCacheFile &Cache, std::string pkg) { + return APT::VersionSet::FromString(Cache, pkg, CANDINST); + } + + /** \brief returns all versions specified for the package + + \param Cache the package and versions are in + \param P the package in question + \param fallback the version(s) you want to get + \param helper the helper used for display and error handling */ + static APT::VersionSet FromPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &P, + VersionSet::Version const &fallback, CacheSetHelper &helper); + static APT::VersionSet FromPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &P, + APT::VersionSet::Version const &fallback) { + CacheSetHelper helper; + return APT::VersionSet::FromPackage(Cache, P, fallback, helper); + } + static APT::VersionSet FromPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &P) { + return APT::VersionSet::FromPackage(Cache, P, CANDINST); + } + + struct Modifier { + enum Position { NONE, PREFIX, POSTFIX }; + unsigned short ID; + const char * const Alias; + Position Pos; + VersionSet::Version SelectVersion; + Modifier (unsigned short const &id, const char * const alias, Position const &pos, + VersionSet::Version const &select) : ID(id), Alias(alias), Pos(pos), + SelectVersion(select) {}; + }; + + static std::map GroupedFromCommandLine( + pkgCacheFile &Cache, const char **cmdline, + std::list const &mods, + unsigned short const &fallback, CacheSetHelper &helper); + static std::map GroupedFromCommandLine( + pkgCacheFile &Cache, const char **cmdline, + std::list const &mods, + unsigned short const &fallback) { + CacheSetHelper helper; + return APT::VersionSet::GroupedFromCommandLine(Cache, cmdline, + mods, fallback, helper); + } + /*}}}*/ +protected: /*{{{*/ + + /** \brief returns the candidate version of the package + + \param Cache to be used to query for information + \param Pkg we want the candidate version from this package */ + static pkgCache::VerIterator getCandidateVer(pkgCacheFile &Cache, + pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper); + + /** \brief returns the installed version of the package + + \param Cache to be used to query for information + \param Pkg we want the installed version from this package */ + static pkgCache::VerIterator getInstalledVer(pkgCacheFile &Cache, + pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper); + /*}}}*/ +}; /*}}}*/ +} +#endif -- cgit v1.2.3