give a descriptive error for pipe tries with 'false'

[apt.git] / apt-pkg / cacheset.cc

diff --git a/apt-pkg/cacheset.cc b/apt-pkg/cacheset.cc
index a4e330a0a9525bb4f0614c12c4c38a8d9447f937..816925c4dbc00bbbbe5b13d21fa6b969919cba00 100644 (file)
--- a/apt-pkg/cacheset.cc
+++ b/apt-pkg/cacheset.cc
@@ -153,12 +153,8 @@ bool CacheSetHelper::PackageFromRegEx(PackageContainerInterface * const pci, pkg
                        continue;
                pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
                if (Pkg.end() == true) {
-                       if (archfound == std::string::npos) {
-                               std::vector<std::string> archs = APT::Configuration::getArchitectures();
-                               for (std::vector<std::string>::const_iterator a = archs.begin();
-                                    a != archs.end() && Pkg.end() != true; ++a)
-                                       Pkg = Grp.FindPkg(*a);
-                       }
+                       if (archfound == std::string::npos)
+                               Pkg = Grp.FindPreferredPkg(true);
                        if (Pkg.end() == true)
                                continue;
                }
@@ -213,12 +209,8 @@ bool CacheSetHelper::PackageFromFnmatch(PackageContainerInterface * const pci,
                        continue;
                pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
                if (Pkg.end() == true) {
-                       if (archfound == std::string::npos) {
-                               std::vector<std::string> archs = APT::Configuration::getArchitectures();
-                               for (std::vector<std::string>::const_iterator a = archs.begin();
-                                    a != archs.end() && Pkg.end() != true; ++a)
-                                       Pkg = Grp.FindPkg(*a);
-                       }
+                       if (archfound == std::string::npos)
+                               Pkg = Grp.FindPreferredPkg(true);
                        if (Pkg.end() == true)
                                continue;
                }
@@ -273,6 +265,7 @@ bool CacheSetHelper::PackageFromPackageName(PackageContainerInterface * const pc
        if (unlikely(Cache.GetPkgCache() == 0))
                return false;
 
+       std::string const pkgstring = pkg;
        size_t const archfound = pkg.find_last_of(':');
        std::string arch;
        if (archfound != std::string::npos) {
@@ -309,7 +302,7 @@ bool CacheSetHelper::PackageFromPackageName(PackageContainerInterface * const pc
                }
        }
 
-       pkgCache::PkgIterator Pkg = canNotFindPkgName(Cache, pkg);
+       pkgCache::PkgIterator Pkg = canNotFindPkgName(Cache, pkgstring);
        if (Pkg.end() == true)
           return false;
 
@@ -343,7 +336,7 @@ bool CacheSetHelper::PackageFromString(PackageContainerInterface * const pci, pk
 bool CacheSetHelper::PackageFromCommandLine(PackageContainerInterface * const pci, pkgCacheFile &Cache, const char **cmdline) {
        bool found = false;
        for (const char **I = cmdline; *I != 0; ++I)
-               found |= PackageFrom(CacheSetHelper::PACKAGENAME, pci, Cache, *I);
+               found |= PackageFrom(CacheSetHelper::STRING, pci, Cache, *I);
        return found;
 }
                                                                        /*}}}*/
@@ -448,14 +441,6 @@ bool VersionContainerInterface::FromString(VersionContainerInterface * const vci
                                           CacheSetHelper::VerSelector const fallback,
                                           CacheSetHelper &helper,
                                           bool const onlyFromName) {
-       PackageSet pkgset;
-       if(FileExists(pkg)) {
-               helper.PackageFrom(CacheSetHelper::STRING, &pkgset, Cache, pkg);
-               if(pkgset.empty() == true)
-                       return false;
-               return VersionContainerInterface::FromPackage(vci, Cache, pkgset.begin(), fallback, helper);
-       }
-
        std::string ver;
        bool verIsRel = false;
        size_t const vertag = pkg.find_last_of("/=");
@@ -464,6 +449,8 @@ bool VersionContainerInterface::FromString(VersionContainerInterface * const vci
                verIsRel = (pkg[vertag] == '/');
                pkg.erase(vertag);
        }
+
+       PackageSet pkgset;
        if (onlyFromName == false)
                helper.PackageFrom(CacheSetHelper::STRING, &pkgset, Cache, pkg);
        else {
@@ -582,16 +569,126 @@ bool VersionContainerInterface::FromPackage(VersionContainerInterface * const vc
        return found;
 }
                                                                        /*}}}*/
+// FromDependency - versions satisfying a given dependency             /*{{{*/
+bool VersionContainerInterface::FromDependency(VersionContainerInterface * const vci,
+                                              pkgCacheFile &Cache,
+                                              pkgCache::DepIterator const &D,
+                                              CacheSetHelper::VerSelector const selector,
+                                              CacheSetHelper &helper)
+{
+       bool found = false;
+       switch(selector) {
+       case CacheSetHelper::ALL:
+       {
+               pkgCache::PkgIterator const T = D.TargetPkg();
+               for (pkgCache::VerIterator Ver = T.VersionList(); Ver.end() == false; ++Ver)
+               {
+                  if (D.IsSatisfied(Ver) == true)
+                  {
+                     vci->insert(Ver);
+                     found = true;
+                  }
+                  for (pkgCache::PrvIterator Prv = T.ProvidesList(); Prv.end() != true; ++Prv)
+                  {
+                     pkgCache::VerIterator const V = Prv.OwnerVer();
+                     if (unlikely(V.end() == true) || D.IsSatisfied(Prv) == false)
+                        continue;
+                     vci->insert(V);
+                     found = true;
+                  }
+               }
+               return found;
+       }
+       case CacheSetHelper::CANDANDINST:
+       {
+               found = FromDependency(vci, Cache, D, CacheSetHelper::CANDIDATE, helper);
+               found &= FromDependency(vci, Cache, D, CacheSetHelper::INSTALLED, helper);
+               return found;
+       }
+       case CacheSetHelper::CANDIDATE:
+       {
+               pkgCache::PkgIterator const T = D.TargetPkg();
+               pkgCache::VerIterator const Cand = Cache[T].CandidateVerIter(Cache);
+               if (Cand.end() == false && D.IsSatisfied(Cand) == true)
+               {
+                  vci->insert(Cand);
+                  found = true;
+               }
+               for (pkgCache::PrvIterator Prv = T.ProvidesList(); Prv.end() != true; ++Prv)
+               {
+                  pkgCache::VerIterator const V = Prv.OwnerVer();
+                  pkgCache::VerIterator const Cand = Cache[Prv.OwnerPkg()].CandidateVerIter(Cache);
+                  if (Cand.end() == true || V != Cand || D.IsSatisfied(Prv) == false)
+                     continue;
+                  vci->insert(Cand);
+                  found = true;
+               }
+               return found;
+       }
+       case CacheSetHelper::INSTALLED:
+       {
+               pkgCache::PkgIterator const T = D.TargetPkg();
+               pkgCache::VerIterator const Cand = T.CurrentVer();
+               if (Cand.end() == false && D.IsSatisfied(Cand) == true)
+               {
+                  vci->insert(Cand);
+                  found = true;
+               }
+               for (pkgCache::PrvIterator Prv = T.ProvidesList(); Prv.end() != true; ++Prv)
+               {
+                  pkgCache::VerIterator const V = Prv.OwnerVer();
+                  pkgCache::VerIterator const Cand = Prv.OwnerPkg().CurrentVer();
+                  if (Cand.end() == true || V != Cand || D.IsSatisfied(Prv) == false)
+                     continue;
+                  vci->insert(Cand);
+                  found = true;
+               }
+               return found;
+       }
+       case CacheSetHelper::CANDINST:
+               return FromDependency(vci, Cache, D, CacheSetHelper::CANDIDATE, helper) ||
+                  FromDependency(vci, Cache, D, CacheSetHelper::INSTALLED, helper);
+       case CacheSetHelper::INSTCAND:
+               return FromDependency(vci, Cache, D, CacheSetHelper::INSTALLED, helper) ||
+                  FromDependency(vci, Cache, D, CacheSetHelper::CANDIDATE, helper);
+       case CacheSetHelper::NEWEST:
+       {
+               pkgCache::PkgIterator const T = D.TargetPkg();
+               pkgCache::VerIterator const Cand = T.VersionList();
+               if (Cand.end() == false && D.IsSatisfied(Cand) == true)
+               {
+                  vci->insert(Cand);
+                  found = true;
+               }
+               for (pkgCache::PrvIterator Prv = T.ProvidesList(); Prv.end() != true; ++Prv)
+               {
+                  pkgCache::VerIterator const V = Prv.OwnerVer();
+                  pkgCache::VerIterator const Cand = Prv.OwnerPkg().VersionList();
+                  if (Cand.end() == true || V != Cand || D.IsSatisfied(Prv) == false)
+                     continue;
+                  vci->insert(Cand);
+                  found = true;
+               }
+               return found;
+       }
+       case CacheSetHelper::RELEASE:
+       case CacheSetHelper::VERSIONNUMBER:
+               // both make no sense here, so always false
+               return false;
+       }
+       return found;
+}
+                                                                       /*}}}*/
 // getCandidateVer - Returns the candidate version of the given package        /*{{{*/
 pkgCache::VerIterator VersionContainerInterface::getCandidateVer(pkgCacheFile &Cache,
                pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
        pkgCache::VerIterator Cand;
-       if (Cache.IsPolicyBuilt() == true || Cache.IsDepCacheBuilt() == false) {
-               if (unlikely(Cache.GetPolicy() == 0))
-                       return pkgCache::VerIterator(Cache);
-               Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
-       } else {
+       if (Cache.IsDepCacheBuilt() == true) {
                Cand = Cache[Pkg].CandidateVerIter(Cache);
+       } else if (unlikely(Cache.GetPolicy() == nullptr)) {
+               return pkgCache::VerIterator(Cache);
+       } else {
+               Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
        }
        if (Cand.end() == true)
                return helper.canNotGetVersion(CacheSetHelper::CANDIDATE, Cache, Pkg);
@@ -825,7 +922,8 @@ PackageContainerInterface& PackageContainerInterface::operator=(PackageContainer
 }
 PackageContainerInterface::~PackageContainerInterface() {}
 
-PackageUniverse::PackageUniverse(pkgCache * const Owner) : _cont(Owner), d(NULL) { }
+PackageUniverse::PackageUniverse(pkgCache * const Owner) : _cont(Owner), d(NULL) {}
+PackageUniverse::PackageUniverse(pkgCacheFile * const Owner) : _cont(Owner->GetPkgCache()), d(NULL) {}
 PackageUniverse::~PackageUniverse() {}
 
 VersionContainerInterface::VersionContainerInterface() : d(NULL) {}