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-rw-r--r--apt-pkg/cacheset.h96
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+// -*- 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 <iostream>
+#include <fstream>
+#include <set>
+#include <string>
+
+#include <apt-pkg/pkgcache.h>
+ /*}}}*/
+namespace APT {
+/** \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. */
+class PackageSet : public std::set<pkgCache::PkgIterator> { /*{{{*/
+public: /*{{{*/
+ /** \brief smell like a pkgCache::PkgIterator */
+ class const_iterator : public std::set<pkgCache::PkgIterator>::const_iterator {
+ public:
+ const_iterator(std::set<pkgCache::PkgIterator>::const_iterator x) :
+ std::set<pkgCache::PkgIterator>::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 typename APT::PackageSet::const_iterator iterator;
+
+ /** \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 out stream to print the notice to */
+ static APT::PackageSet FromRegEx(pkgCache &Cache, std::string pattern, std::ostream &out);
+ static APT::PackageSet FromRegEx(pkgCache &Cache, std::string const &pattern) {
+ std::ostream out (std::ofstream("/dev/null").rdbuf());
+ return APT::PackageSet::FromRegEx(Cache, pattern, out);
+ }
+
+ /** \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 out stream to print various notices to */
+ static APT::PackageSet FromCommandLine(pkgCache &Cache, const char **cmdline, std::ostream &out);
+ static APT::PackageSet FromCommandLine(pkgCache &Cache, const char **cmdline) {
+ std::ostream out (std::ofstream("/dev/null").rdbuf());
+ return APT::PackageSet::FromCommandLine(Cache, cmdline, out);
+ }
+
+
+
+ /*}}}*/
+};
+ /*}}}*/
+}
+#endif