apt-pkg/cachefilter.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 /** \file cachefilter.h
   4    Collection of functor classes */
   5                                                                         /*}}}*/
   6 #ifndef APT_CACHEFILTER_H
   7 #define APT_CACHEFILTER_H
   8 // Include Files                                                        /*{{{*/
   9 #include <apt-pkg/pkgcache.h>
  10 #include <apt-pkg/cacheiterators.h>
  11
  12 #include <string>
  13 #include <vector>
  14
  15 #include <regex.h>
  16
  17 class pkgCacheFile;
  18                                                                         /*}}}*/
  19 namespace APT {
  20 namespace CacheFilter {
  21
  22 class Matcher {
  23 public:
  24    virtual bool operator() (pkgCache::PkgIterator const &/*Pkg*/) = 0;
  25    virtual bool operator() (pkgCache::GrpIterator const &/*Grp*/) = 0;
  26    virtual bool operator() (pkgCache::VerIterator const &/*Ver*/) = 0;
  27    virtual ~Matcher();
  28 };
  29
  30 class PackageMatcher : public Matcher {
  31 public:
  32    virtual bool operator() (pkgCache::PkgIterator const &Pkg) = 0;
  33    virtual bool operator() (pkgCache::VerIterator const &Ver) { return (*this)(Ver.ParentPkg()); }
  34    virtual bool operator() (pkgCache::GrpIterator const &/*Grp*/) { return false; }
  35    virtual ~PackageMatcher();
  36 };
  37
  38 // Generica like True, False, NOT, AND, OR                              /*{{{*/
  39 class TrueMatcher : public Matcher {
  40 public:
  41    virtual bool operator() (pkgCache::PkgIterator const &Pkg);
  42    virtual bool operator() (pkgCache::GrpIterator const &Grp);
  43    virtual bool operator() (pkgCache::VerIterator const &Ver);
  44 };
  45
  46 class FalseMatcher : public Matcher {
  47 public:
  48    virtual bool operator() (pkgCache::PkgIterator const &Pkg);
  49    virtual bool operator() (pkgCache::GrpIterator const &Grp);
  50    virtual bool operator() (pkgCache::VerIterator const &Ver);
  51 };
  52
  53 class NOTMatcher : public Matcher {
  54    Matcher * const matcher;
  55 public:
  56    NOTMatcher(Matcher * const matcher);
  57    virtual bool operator() (pkgCache::PkgIterator const &Pkg);
  58    virtual bool operator() (pkgCache::GrpIterator const &Grp);
  59    virtual bool operator() (pkgCache::VerIterator const &Ver);
  60    virtual ~NOTMatcher();
  61 };
  62
  63 class ANDMatcher : public Matcher {
  64    std::vector<Matcher *> matchers;
  65 public:
  66    // 5 ought to be enough for everybody… c++11 variadic templates would be nice
  67    ANDMatcher();
  68    ANDMatcher(Matcher * const matcher1);
  69    ANDMatcher(Matcher * const matcher1, Matcher * const matcher2);
  70    ANDMatcher(Matcher * const matcher1, Matcher * const matcher2, Matcher * const matcher3);
  71    ANDMatcher(Matcher * const matcher1, Matcher * const matcher2, Matcher * const matcher3, Matcher * const matcher4);
  72    ANDMatcher(Matcher * const matcher1, Matcher * const matcher2, Matcher * const matcher3, Matcher * const matcher4, Matcher * const matcher5);
  73    ANDMatcher& AND(Matcher * const matcher);
  74    virtual bool operator() (pkgCache::PkgIterator const &Pkg);
  75    virtual bool operator() (pkgCache::GrpIterator const &Grp);
  76    virtual bool operator() (pkgCache::VerIterator const &Ver);
  77    virtual ~ANDMatcher();
  78 };
  79 class ORMatcher : public Matcher {
  80    std::vector<Matcher *> matchers;
  81 public:
  82    // 5 ought to be enough for everybody… c++11 variadic templates would be nice
  83    ORMatcher();
  84    ORMatcher(Matcher * const matcher1);
  85    ORMatcher(Matcher * const matcher1, Matcher * const matcher2);
  86    ORMatcher(Matcher * const matcher1, Matcher * const matcher2, Matcher * const matcher3);
  87    ORMatcher(Matcher * const matcher1, Matcher * const matcher2, Matcher * const matcher3, Matcher * const matcher4);
  88    ORMatcher(Matcher * const matcher1, Matcher * const matcher2, Matcher * const matcher3, Matcher * const matcher4, Matcher * const matcher5);
  89    ORMatcher& OR(Matcher * const matcher);
  90    virtual bool operator() (pkgCache::PkgIterator const &Pkg);
  91    virtual bool operator() (pkgCache::GrpIterator const &Grp);
  92    virtual bool operator() (pkgCache::VerIterator const &Ver);
  93    virtual ~ORMatcher();
  94 };
  95                                                                         /*}}}*/
  96 class PackageNameMatchesRegEx : public PackageMatcher {                 /*{{{*/
  97         regex_t* pattern;
  98 public:
  99         PackageNameMatchesRegEx(std::string const &Pattern);
 100         virtual bool operator() (pkgCache::PkgIterator const &Pkg);
 101         virtual bool operator() (pkgCache::GrpIterator const &Grp);
 102         virtual ~PackageNameMatchesRegEx();
 103 };
 104                                                                         /*}}}*/
 105 class PackageNameMatchesFnmatch : public PackageMatcher {               /*{{{*/
 106         const std::string Pattern;
 107 public:
 108         PackageNameMatchesFnmatch(std::string const &Pattern);
 109         virtual bool operator() (pkgCache::PkgIterator const &Pkg);
 110         virtual bool operator() (pkgCache::GrpIterator const &Grp);
 111         virtual ~PackageNameMatchesFnmatch() {};
 112 };
 113                                                                         /*}}}*/
 114 class PackageArchitectureMatchesSpecification : public PackageMatcher { /*{{{*/
 115 /** \class PackageArchitectureMatchesSpecification
 116    \brief matching against architecture specification strings
 117
 118    The strings are of the format <kernel>-<cpu> where either component,
 119    or the whole string, can be the wildcard "any" as defined in
 120    debian-policy §11.1 "Architecture specification strings".
 121
 122    Examples: i386, mipsel, linux-any, any-amd64, any */
 123         std::string literal;
 124         std::string complete;
 125         bool isPattern;
 126 public:
 127         /** \brief matching against architecture specification strings
 128          *
 129          * @param pattern is the architecture specification string
 130          * @param isPattern defines if the given \b pattern is a
 131          *        architecture specification pattern to match others against
 132          *        or if it is the fixed string and matched against patterns
 133          */
 134         PackageArchitectureMatchesSpecification(std::string const &pattern, bool const isPattern = true);
 135         bool operator() (char const * const &arch);
 136         virtual bool operator() (pkgCache::PkgIterator const &Pkg);
 137         virtual ~PackageArchitectureMatchesSpecification();
 138 };
 139                                                                         /*}}}*/
 140 class PackageIsNewInstall : public PackageMatcher {                     /*{{{*/
 141         pkgCacheFile * const Cache;
 142 public:
 143         PackageIsNewInstall(pkgCacheFile * const Cache);
 144         virtual bool operator() (pkgCache::PkgIterator const &Pkg);
 145         virtual ~PackageIsNewInstall();
 146 };
 147                                                                         /*}}}*/
 148
 149 }
 150 }
 151 #endif