]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/pkgcache.cc
* apt-pkg/contrib/cmdline.cc:
[apt.git] / apt-pkg / pkgcache.cc
index 8eb62089a8369af4c23f89b07045a71804ed5169..a59a06d65411375cad6ceebeea33bc08290d2d9f 100644 (file)
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
 #include <apt-pkg/pkgcache.h>
-#include <apt-pkg/indexfile.h>
+#include <apt-pkg/policy.h>
 #include <apt-pkg/version.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/macros.h>
 
 #include <apti18n.h>
     
@@ -34,7 +36,6 @@
 #include <unistd.h>
 
 #include <ctype.h>
-#include <system.h>
                                                                        /*}}}*/
 
 using std::string;
@@ -49,11 +50,12 @@ pkgCache::Header::Header()
    
    /* Whenever the structures change the major version should be bumped,
       whenever the generator changes the minor version should be bumped. */
-   MajorVersion = 7;
+   MajorVersion = 8;
    MinorVersion = 0;
    Dirty = false;
    
    HeaderSz = sizeof(pkgCache::Header);
+   GroupSz = sizeof(pkgCache::Group);
    PackageSz = sizeof(pkgCache::Package);
    PackageFileSz = sizeof(pkgCache::PackageFile);
    VersionSz = sizeof(pkgCache::Version);
@@ -63,6 +65,7 @@ pkgCache::Header::Header()
    VerFileSz = sizeof(pkgCache::VerFile);
    DescFileSz = sizeof(pkgCache::DescFile);
    
+   GroupCount = 0;
    PackageCount = 0;
    VersionCount = 0;
    DescriptionCount = 0;
@@ -78,7 +81,8 @@ pkgCache::Header::Header()
    StringList = 0;
    VerSysName = 0;
    Architecture = 0;
-   memset(HashTable,0,sizeof(HashTable));
+   memset(PkgHashTable,0,sizeof(PkgHashTable));
+   memset(GrpHashTable,0,sizeof(GrpHashTable));
    memset(Pools,0,sizeof(Pools));
 }
                                                                        /*}}}*/
@@ -88,6 +92,7 @@ pkgCache::Header::Header()
 bool pkgCache::Header::CheckSizes(Header &Against) const
 {
    if (HeaderSz == Against.HeaderSz &&
+       GroupSz == Against.GroupSz &&
        PackageSz == Against.PackageSz &&
        PackageFileSz == Against.PackageFileSz &&
        VersionSz == Against.VersionSz &&
@@ -106,6 +111,7 @@ bool pkgCache::Header::CheckSizes(Header &Against) const
 /* */
 pkgCache::pkgCache(MMap *Map, bool DoMap) : Map(*Map)
 {
+   MultiArchEnabled = APT::Configuration::getArchitectures().size() > 1;
    if (DoMap == true)
       ReMap();
 }
@@ -117,6 +123,7 @@ bool pkgCache::ReMap()
 {
    // Apply the typecasts.
    HeaderP = (Header *)Map.Data();
+   GrpP = (Group *)Map.Data();
    PkgP = (Package *)Map.Data();
    VerFileP = (VerFile *)Map.Data();
    DescFileP = (DescFile *)Map.Data();
@@ -163,35 +170,91 @@ unsigned long pkgCache::sHash(const string &Str) const
 {
    unsigned long Hash = 0;
    for (string::const_iterator I = Str.begin(); I != Str.end(); I++)
-      Hash = 5*Hash + tolower(*I);
-   return Hash % _count(HeaderP->HashTable);
+      Hash = 5*Hash + tolower_ascii(*I);
+   return Hash % _count(HeaderP->PkgHashTable);
 }
 
 unsigned long pkgCache::sHash(const char *Str) const
 {
    unsigned long Hash = 0;
    for (const char *I = Str; *I != 0; I++)
-      Hash = 5*Hash + tolower(*I);
-   return Hash % _count(HeaderP->HashTable);
+      Hash = 5*Hash + tolower_ascii(*I);
+   return Hash % _count(HeaderP->PkgHashTable);
 }
 
                                                                        /*}}}*/
-// Cache::FindPkg - Locate a package by name                           /*{{{*/
+// Cache::SingleArchFindPkg - Locate a package by name                 /*{{{*/
 // ---------------------------------------------------------------------
-/* Returns 0 on error, pointer to the package otherwise */
-pkgCache::PkgIterator pkgCache::FindPkg(const string &Name)
+/* Returns 0 on error, pointer to the package otherwise
+   The multiArch enabled methods will fallback to this one as it is (a bit)
+   faster for single arch environments and realworld is mostly singlearch… */
+pkgCache::PkgIterator pkgCache::SingleArchFindPkg(const string &Name)
 {
    // Look at the hash bucket
-   Package *Pkg = PkgP + HeaderP->HashTable[Hash(Name)];
+   Package *Pkg = PkgP + HeaderP->PkgHashTable[Hash(Name)];
    for (; Pkg != PkgP; Pkg = PkgP + Pkg->NextPackage)
    {
       if (Pkg->Name != 0 && StrP[Pkg->Name] == Name[0] &&
-         stringcasecmp(Name,StrP + Pkg->Name) == 0)
-        return PkgIterator(*this,Pkg);
+          stringcasecmp(Name,StrP + Pkg->Name) == 0)
+         return PkgIterator(*this,Pkg);
    }
    return PkgIterator(*this,0);
 }
                                                                        /*}}}*/
+// Cache::FindPkg - Locate a package by name                           /*{{{*/
+// ---------------------------------------------------------------------
+/* Returns 0 on error, pointer to the package otherwise */
+pkgCache::PkgIterator pkgCache::FindPkg(const string &Name) {
+       if (MultiArchCache() == false)
+               return SingleArchFindPkg(Name);
+       size_t const found = Name.find(':');
+       if (found == string::npos)
+               return FindPkg(Name, "native");
+       string const Arch = Name.substr(found+1);
+       if (Arch == "any")
+               return FindPkg(Name, "any");
+       return FindPkg(Name.substr(0, found), Arch);
+}
+                                                                       /*}}}*/
+// Cache::FindPkg - Locate a package by name                           /*{{{*/
+// ---------------------------------------------------------------------
+/* Returns 0 on error, pointer to the package otherwise */
+pkgCache::PkgIterator pkgCache::FindPkg(const string &Name, string const &Arch) {
+       if (MultiArchCache() == false) {
+               if (Arch == "native" || Arch == "all" || Arch == "any" ||
+                   Arch == _config->Find("APT::Architecture"))
+                       return SingleArchFindPkg(Name);
+               else
+                       return PkgIterator(*this,0);
+       }
+       /* We make a detour via the GrpIterator here as
+          on a multi-arch environment a group is easier to
+          find than a package (less entries in the buckets) */
+       pkgCache::GrpIterator Grp = FindGrp(Name);
+       if (Grp.end() == true)
+               return PkgIterator(*this,0);
+
+       return Grp.FindPkg(Arch);
+}
+                                                                       /*}}}*/
+// Cache::FindGrp - Locate a group by name                             /*{{{*/
+// ---------------------------------------------------------------------
+/* Returns End-Pointer on error, pointer to the group otherwise */
+pkgCache::GrpIterator pkgCache::FindGrp(const string &Name) {
+       if (unlikely(Name.empty() == true))
+               return GrpIterator(*this,0);
+
+       // Look at the hash bucket for the group
+       Group *Grp = GrpP + HeaderP->GrpHashTable[sHash(Name)];
+       for (; Grp != GrpP; Grp = GrpP + Grp->Next) {
+               if (Grp->Name != 0 && StrP[Grp->Name] == Name[0] &&
+                   stringcasecmp(Name, StrP + Grp->Name) == 0)
+                       return GrpIterator(*this, Grp);
+       }
+
+       return GrpIterator(*this,0);
+}
+                                                                       /*}}}*/
 // Cache::CompTypeDeb - Return a string describing the compare type    /*{{{*/
 // ---------------------------------------------------------------------
 /* This returns a string representation of the dependency compare 
@@ -223,7 +286,7 @@ const char *pkgCache::DepType(unsigned char Type)
 {
    const char *Types[] = {"",_("Depends"),_("PreDepends"),_("Suggests"),
                           _("Recommends"),_("Conflicts"),_("Replaces"),
-                          _("Obsoletes"),_("Breaks")};
+                          _("Obsoletes"),_("Breaks"), _("Enhances")};
    if (Type < sizeof(Types)/sizeof(*Types))
       return Types[Type];
    return "";
@@ -241,11 +304,77 @@ const char *pkgCache::Priority(unsigned char Prio)
    return 0;
 }
                                                                        /*}}}*/
-// Bases for iterator classes                                          /*{{{*/
-void pkgCache::VerIterator::_dummy() {}
-void pkgCache::DepIterator::_dummy() {}
-void pkgCache::PrvIterator::_dummy() {}
-void pkgCache::DescIterator::_dummy() {}
+// GrpIterator::FindPkg - Locate a package by arch                     /*{{{*/
+// ---------------------------------------------------------------------
+/* Returns an End-Pointer on error, pointer to the package otherwise */
+pkgCache::PkgIterator pkgCache::GrpIterator::FindPkg(string Arch) {
+       if (unlikely(IsGood() == false || S->FirstPackage == 0))
+               return PkgIterator(*Owner, 0);
+
+       static string const myArch = _config->Find("APT::Architecture");
+       /* Most of the time the package for our native architecture is
+          the one we add at first to the cache, but this would be the
+          last one we check, so we do it now. */
+       if (Arch == "native" || Arch == myArch) {
+               Arch = myArch;
+               pkgCache::Package *Pkg = Owner->PkgP + S->LastPackage;
+               if (stringcasecmp(Arch, Owner->StrP + Pkg->Arch) == 0)
+                       return PkgIterator(*Owner, Pkg);
+       }
+
+       /* If we accept any package we simply return the "first"
+          package in this group (the last one added). */
+       if (Arch == "any")
+               return PkgIterator(*Owner, Owner->PkgP + S->FirstPackage);
+
+       /* Iterate over the list to find the matching arch
+          unfortunately this list includes "package noise"
+          (= different packages with same calculated hash),
+          so we need to check the name also */
+       for (pkgCache::Package *Pkg = PackageList(); Pkg != Owner->PkgP;
+            Pkg = Owner->PkgP + Pkg->NextPackage) {
+               if (S->Name == Pkg->Name &&
+                   stringcasecmp(Arch, Owner->StrP + Pkg->Arch) == 0)
+                       return PkgIterator(*Owner, Pkg);
+               if ((Owner->PkgP + S->LastPackage) == Pkg)
+                       break;
+       }
+
+       return PkgIterator(*Owner, 0);
+}
+                                                                       /*}}}*/
+// GrpIterator::NextPkg - Locate the next package in the group         /*{{{*/
+// ---------------------------------------------------------------------
+/* Returns an End-Pointer on error, pointer to the package otherwise.
+   We can't simply ++ to the next as the next package of the last will
+   be from a different group (with the same hash value) */
+pkgCache::PkgIterator pkgCache::GrpIterator::NextPkg(pkgCache::PkgIterator const &LastPkg) {
+       if (unlikely(IsGood() == false || S->FirstPackage == 0 ||
+           LastPkg.end() == true))
+               return PkgIterator(*Owner, 0);
+
+       if (S->LastPackage == LastPkg.Index())
+               return PkgIterator(*Owner, 0);
+
+       return PkgIterator(*Owner, Owner->PkgP + LastPkg->NextPackage);
+}
+                                                                       /*}}}*/
+// GrpIterator::operator ++ - Postfix incr                             /*{{{*/
+// ---------------------------------------------------------------------
+/* This will advance to the next logical group in the hash table. */
+void pkgCache::GrpIterator::operator ++(int) 
+{
+   // Follow the current links
+   if (S != Owner->GrpP)
+      S = Owner->GrpP + S->Next;
+
+   // Follow the hash table
+   while (S == Owner->GrpP && (HashIndex+1) < (signed)_count(Owner->HeaderP->GrpHashTable))
+   {
+      HashIndex++;
+      S = Owner->GrpP + Owner->HeaderP->GrpHashTable[HashIndex];
+   }
+};
                                                                        /*}}}*/
 // PkgIterator::operator ++ - Postfix incr                             /*{{{*/
 // ---------------------------------------------------------------------
@@ -253,14 +382,14 @@ void pkgCache::DescIterator::_dummy() {}
 void pkgCache::PkgIterator::operator ++(int) 
 {
    // Follow the current links
-   if (Pkg != Owner->PkgP)
-      Pkg = Owner->PkgP + Pkg->NextPackage;
+   if (S != Owner->PkgP)
+      S = Owner->PkgP + S->NextPackage;
 
    // Follow the hash table
-   while (Pkg == Owner->PkgP && (HashIndex+1) < (signed)_count(Owner->HeaderP->HashTable))
+   while (S == Owner->PkgP && (HashIndex+1) < (signed)_count(Owner->HeaderP->PkgHashTable))
    {
       HashIndex++;
-      Pkg = Owner->PkgP + Owner->HeaderP->HashTable[HashIndex];
+      S = Owner->PkgP + Owner->HeaderP->PkgHashTable[HashIndex];
    }
 };
                                                                        /*}}}*/
@@ -269,34 +398,100 @@ void pkgCache::PkgIterator::operator ++(int)
 /* By this we mean if it is either cleanly installed or cleanly removed. */
 pkgCache::PkgIterator::OkState pkgCache::PkgIterator::State() const
 {  
-   if (Pkg->InstState == pkgCache::State::ReInstReq ||
-       Pkg->InstState == pkgCache::State::HoldReInstReq)
+   if (S->InstState == pkgCache::State::ReInstReq ||
+       S->InstState == pkgCache::State::HoldReInstReq)
       return NeedsUnpack;
    
-   if (Pkg->CurrentState == pkgCache::State::UnPacked ||
-       Pkg->CurrentState == pkgCache::State::HalfConfigured ||
-       Pkg->CurrentState == pkgCache::State::TriggersPending ||
-       Pkg->CurrentState == pkgCache::State::TriggersAwaited)
+   if (S->CurrentState == pkgCache::State::UnPacked ||
+       S->CurrentState == pkgCache::State::HalfConfigured)
+      // we leave triggers alone complettely. dpkg deals with
+      // them in a hard-to-predict manner and if they get 
+      // resolved by dpkg before apt run dpkg --configure on 
+      // the TriggersPending package dpkg returns a error
+      //Pkg->CurrentState == pkgCache::State::TriggersAwaited
+      //Pkg->CurrentState == pkgCache::State::TriggersPending)
       return NeedsConfigure;
    
-   if (Pkg->CurrentState == pkgCache::State::HalfInstalled ||
-       Pkg->InstState != pkgCache::State::Ok)
+   if (S->CurrentState == pkgCache::State::HalfInstalled ||
+       S->InstState != pkgCache::State::Ok)
       return NeedsUnpack;
       
    return NeedsNothing;
 }
                                                                        /*}}}*/
+// PkgIterator::CandVersion - Returns the candidate version string     /*{{{*/
+// ---------------------------------------------------------------------
+/* Return string representing of the candidate version. */
+const char *
+pkgCache::PkgIterator::CandVersion() const 
+{
+  //TargetVer is empty, so don't use it.
+  VerIterator version = pkgPolicy(Owner).GetCandidateVer(*this);
+  if (version.IsGood())
+    return version.VerStr();
+  return 0;
+};
+                                                                       /*}}}*/
+// PkgIterator::CurVersion - Returns the current version string                /*{{{*/
+// ---------------------------------------------------------------------
+/* Return string representing of the current version. */
+const char *
+pkgCache::PkgIterator::CurVersion() const 
+{
+  VerIterator version = CurrentVer();
+  if (version.IsGood())
+    return CurrentVer().VerStr();
+  return 0;
+};
+                                                                       /*}}}*/
+// ostream operator to handle string representation of a package       /*{{{*/
+// ---------------------------------------------------------------------
+/* Output name < cur.rent.version -> candid.ate.version | new.est.version > (section)
+   Note that the characters <|>() are all literal above. Versions will be ommited
+   if they provide no new information (e.g. there is no newer version than candidate)
+   If no version and/or section can be found "none" is used. */
+std::ostream& 
+operator<<(ostream& out, pkgCache::PkgIterator Pkg) 
+{
+   if (Pkg.end() == true)
+      return out << "invalid package";
+
+   string current = string(Pkg.CurVersion() == 0 ? "none" : Pkg.CurVersion());
+   string candidate = string(Pkg.CandVersion() == 0 ? "none" : Pkg.CandVersion());
+   string newest = string(Pkg.VersionList().end() ? "none" : Pkg.VersionList().VerStr());
+
+   out << Pkg.Name() << " [ " << Pkg.Arch() << " ] < " << current;
+   if (current != candidate)
+      out << " -> " << candidate;
+   if ( newest != "none" && candidate != newest)
+      out << " | " << newest;
+   out << " > ( " << string(Pkg.Section()==0?"none":Pkg.Section()) << " )";
+   return out;
+}
+                                                                       /*}}}*/
+// PkgIterator::FullName - Returns Name and (maybe) Architecture       /*{{{*/
+// ---------------------------------------------------------------------
+/* Returns a name:arch string */
+std::string pkgCache::PkgIterator::FullName(bool const &Pretty) const
+{
+   string fullname = Name();
+   if (Pretty == false ||
+       (strcmp(Arch(), "all") != 0 && _config->Find("APT::Architecture") != Arch()))
+      return fullname.append(":").append(Arch());
+   return fullname;
+}
+                                                                       /*}}}*/
 // DepIterator::IsCritical - Returns true if the dep is important      /*{{{*/
 // ---------------------------------------------------------------------
 /* Currently critical deps are defined as depends, predepends and
    conflicts (including dpkg's Breaks fields). */
 bool pkgCache::DepIterator::IsCritical()
 {
-   if (Dep->Type == pkgCache::Dep::Conflicts ||
-       Dep->Type == pkgCache::Dep::DpkgBreaks ||
-       Dep->Type == pkgCache::Dep::Obsoletes ||
-       Dep->Type == pkgCache::Dep::Depends ||
-       Dep->Type == pkgCache::Dep::PreDepends)
+   if (S->Type == pkgCache::Dep::Conflicts ||
+       S->Type == pkgCache::Dep::DpkgBreaks ||
+       S->Type == pkgCache::Dep::Obsoletes ||
+       S->Type == pkgCache::Dep::Depends ||
+       S->Type == pkgCache::Dep::PreDepends)
       return true;
    return false;
 }
@@ -375,12 +570,12 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets()
       // Walk along the actual package providing versions
       for (VerIterator I = DPkg.VersionList(); I.end() == false; I++)
       {
-        if (Owner->VS->CheckDep(I.VerStr(),Dep->CompareOp,TargetVer()) == false)
+        if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false)
            continue;
 
-        if ((Dep->Type == pkgCache::Dep::Conflicts ||
-             Dep->Type == pkgCache::Dep::DpkgBreaks ||
-             Dep->Type == pkgCache::Dep::Obsoletes) &&
+        if ((S->Type == pkgCache::Dep::Conflicts ||
+             S->Type == pkgCache::Dep::DpkgBreaks ||
+             S->Type == pkgCache::Dep::Obsoletes) &&
             ParentPkg() == I.ParentPkg())
            continue;
         
@@ -392,12 +587,12 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets()
       // Follow all provides
       for (PrvIterator I = DPkg.ProvidesList(); I.end() == false; I++)
       {
-        if (Owner->VS->CheckDep(I.ProvideVersion(),Dep->CompareOp,TargetVer()) == false)
+        if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false)
            continue;
         
-        if ((Dep->Type == pkgCache::Dep::Conflicts ||
-             Dep->Type == pkgCache::Dep::DpkgBreaks ||
-             Dep->Type == pkgCache::Dep::Obsoletes) &&
+        if ((S->Type == pkgCache::Dep::Conflicts ||
+             S->Type == pkgCache::Dep::DpkgBreaks ||
+             S->Type == pkgCache::Dep::Obsoletes) &&
             ParentPkg() == I.OwnerPkg())
            continue;
         
@@ -435,7 +630,7 @@ void pkgCache::DepIterator::GlobOr(DepIterator &Start,DepIterator &End)
    End = *this;
    for (bool LastOR = true; end() == false && LastOR == true;)
    {
-      LastOR = (Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
+      LastOR = (S->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
       (*this)++;
       if (LastOR == true)
         End = (*this);
@@ -490,6 +685,23 @@ bool pkgCache::VerIterator::Automatic() const
    return false;
 }
                                                                        /*}}}*/
+// VerIterator::Pseudo - Check if this version is a pseudo one         /*{{{*/
+// ---------------------------------------------------------------------
+/* Sometimes you have the need to express dependencies with versions
+   which doesn't really exist or exist multiply times for "different"
+   packages. We need these versions for dependency resolution but they
+   are a problem everytime we need to download/install something. */
+bool pkgCache::VerIterator::Pseudo() const
+{
+   if (S->MultiArch == pkgCache::Version::All &&
+          strcmp(Arch(true),"all") != 0)
+   {
+          GrpIterator const Grp = ParentPkg().Group();
+          return (Grp->LastPackage != Grp->FirstPackage);
+   }
+   return false;
+}
+                                                                       /*}}}*/
 // VerIterator::NewestFile - Return the newest file version relation   /*{{{*/
 // ---------------------------------------------------------------------
 /* This looks at the version numbers associated with all of the sources
@@ -570,7 +782,9 @@ string pkgCache::VerIterator::RelStr()
         else
            Res += File.Site();
       }      
-   }   
+   }
+   if (S->ParentPkg != 0)
+      Res.append(" [").append(Arch()).append("]");
    return Res;
 }
                                                                        /*}}}*/
@@ -585,7 +799,7 @@ bool pkgCache::PkgFileIterator::IsOk()
    if (stat(FileName(),&Buf) != 0)
       return false;
 
-   if (Buf.st_size != (signed)File->Size || Buf.st_mtime != File->mtime)
+   if (Buf.st_size != (signed)S->Size || Buf.st_mtime != S->mtime)
       return false;
 
    return true;
@@ -603,10 +817,14 @@ string pkgCache::PkgFileIterator::RelStr()
       Res = Res + (Res.empty() == true?"o=":",o=")  + Origin();
    if (Archive() != 0)
       Res = Res + (Res.empty() == true?"a=":",a=")  + Archive();
+   if (Codename() != 0)
+      Res = Res + (Res.empty() == true?"n=":",n=")  + Codename();
    if (Label() != 0)
       Res = Res + (Res.empty() == true?"l=":",l=")  + Label();
    if (Component() != 0)
       Res = Res + (Res.empty() == true?"c=":",c=")  + Component();
+   if (Architecture() != 0)
+      Res = Res + (Res.empty() == true?"b=":",b=")  + Architecture();
    return Res;
 }
                                                                        /*}}}*/
@@ -617,14 +835,22 @@ string pkgCache::PkgFileIterator::RelStr()
  */
 pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const
 {
-   pkgCache::DescIterator DescDefault = DescriptionList();
-   pkgCache::DescIterator Desc = DescDefault;
-   for (; Desc.end() == false; Desc++)
-      if (pkgIndexFile::LanguageCode() == Desc.LanguageCode())
-        break;
-   if (Desc.end() == true) 
-      Desc = DescDefault;
-   return Desc;
+   std::vector<string> const lang = APT::Configuration::getLanguages();
+   for (std::vector<string>::const_iterator l = lang.begin();
+       l != lang.end(); l++)
+   {
+      pkgCache::DescIterator DescDefault = DescriptionList();
+      pkgCache::DescIterator Desc = DescDefault;
+
+      for (; Desc.end() == false; Desc++)
+        if (*l == Desc.LanguageCode())
+           break;
+      if (Desc.end() == true) 
+        Desc = DescDefault;
+      return Desc;
+   }
+
+   return DescriptionList();
 };
 
                                                                        /*}}}*/