* apt-pkg/deb/deblistparser.cc:

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

diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc
index 862d053483efa6ed32f6e71cfd9227efaa1d9d11..f694a237e2435c446fef9cd0c413f6868c3b1829 100644 (file)
--- a/apt-pkg/pkgcache.cc
+++ b/apt-pkg/pkgcache.cc
@@ -20,6 +20,8 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/

+#include<config.h>
+

 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/policy.h>
 #include <apt-pkg/version.h>
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/policy.h>
 #include <apt-pkg/version.h>


@@ -29,13 +31,12 @@
 #include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/macros.h>
 
 #include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/macros.h>
 

-#include <apti18n.h>
-    

 #include <string>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <string>
 #include <sys/stat.h>
 #include <unistd.h>

-

 #include <ctype.h>
 #include <ctype.h>

+
+#include <apti18n.h>

                                                                        /*}}}*/
 
 using std::string;
                                                                        /*}}}*/
 
 using std::string;


@@ -84,6 +85,8 @@ pkgCache::Header::Header()
    memset(PkgHashTable,0,sizeof(PkgHashTable));
    memset(GrpHashTable,0,sizeof(GrpHashTable));
    memset(Pools,0,sizeof(Pools));
    memset(PkgHashTable,0,sizeof(PkgHashTable));
    memset(GrpHashTable,0,sizeof(GrpHashTable));
    memset(Pools,0,sizeof(Pools));

+
+   CacheFileSize = 0;

 }
                                                                        /*}}}*/
 // Cache::Header::CheckSizes - Check if the two headers have same *sz  /*{{{*/
 }
                                                                        /*}}}*/
 // Cache::Header::CheckSizes - Check if the two headers have same *sz  /*{{{*/


@@ -155,6 +158,9 @@ bool pkgCache::ReMap(bool const &Errorchecks)
        HeaderP->CheckSizes(DefHeader) == false)
       return _error->Error(_("The package cache file is an incompatible version"));
 
        HeaderP->CheckSizes(DefHeader) == false)
       return _error->Error(_("The package cache file is an incompatible version"));
 

+   if (Map.Size() < HeaderP->CacheFileSize)
+      return _error->Error(_("The package cache file is corrupted, it is too small"));
+

    // Locate our VS..
    if (HeaderP->VerSysName == 0 ||
        (VS = pkgVersioningSystem::GetVS(StrP + HeaderP->VerSysName)) == 0)
    // Locate our VS..
    if (HeaderP->VerSysName == 0 ||
        (VS = pkgVersioningSystem::GetVS(StrP + HeaderP->VerSysName)) == 0)


@@ -175,7 +181,7 @@ bool pkgCache::ReMap(bool const &Errorchecks)
 unsigned long pkgCache::sHash(const string &Str) const
 {
    unsigned long Hash = 0;
 unsigned long pkgCache::sHash(const string &Str) const
 {
    unsigned long Hash = 0;

-   for (string::const_iterator I = Str.begin(); I != Str.end(); I++)
+   for (string::const_iterator I = Str.begin(); I != Str.end(); ++I)

       Hash = 5*Hash + tolower_ascii(*I);
    return Hash % _count(HeaderP->PkgHashTable);
 }
       Hash = 5*Hash + tolower_ascii(*I);
    return Hash % _count(HeaderP->PkgHashTable);
 }


@@ -183,7 +189,7 @@ unsigned long pkgCache::sHash(const string &Str) const
 unsigned long pkgCache::sHash(const char *Str) const
 {
    unsigned long Hash = 0;
 unsigned long pkgCache::sHash(const char *Str) const
 {
    unsigned long Hash = 0;

-   for (const char *I = Str; *I != 0; I++)
+   for (const char *I = Str; *I != 0; ++I)

       Hash = 5*Hash + tolower_ascii(*I);
    return Hash % _count(HeaderP->PkgHashTable);
 }
       Hash = 5*Hash + tolower_ascii(*I);
    return Hash % _count(HeaderP->PkgHashTable);
 }


@@ -484,7 +490,7 @@ pkgCache::PkgIterator::CurVersion() const
    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& 
    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) 
+operator<<(std::ostream& out, pkgCache::PkgIterator Pkg) 

 {
    if (Pkg.end() == true)
       return out << "invalid package";
 {
    if (Pkg.end() == true)
       return out << "invalid package";


@@ -521,15 +527,24 @@ std::string pkgCache::PkgIterator::FullName(bool const &Pretty) const
    conflicts (including dpkg's Breaks fields). */
 bool pkgCache::DepIterator::IsCritical() const
 {
    conflicts (including dpkg's Breaks fields). */
 bool pkgCache::DepIterator::IsCritical() const
 {

-   if (S->Type == pkgCache::Dep::Conflicts ||
-       S->Type == pkgCache::Dep::DpkgBreaks ||
-       S->Type == pkgCache::Dep::Obsoletes ||
+   if (IsNegative() == true ||

        S->Type == pkgCache::Dep::Depends ||
        S->Type == pkgCache::Dep::PreDepends)
       return true;
    return false;
 }
                                                                        /*}}}*/
        S->Type == pkgCache::Dep::Depends ||
        S->Type == pkgCache::Dep::PreDepends)
       return true;
    return false;
 }
                                                                        /*}}}*/

+// DepIterator::IsNegative - Returns true if the dep is a negative one /*{{{*/
+// ---------------------------------------------------------------------
+/* Some dependencies are positive like Depends and Recommends, others
+   are negative like Conflicts which can and should be handled differently */
+bool pkgCache::DepIterator::IsNegative() const
+{
+   return S->Type == Dep::DpkgBreaks ||
+         S->Type == Dep::Conflicts ||
+         S->Type == Dep::Obsoletes;
+}
+                                                                       /*}}}*/

 // DepIterator::SmartTargetPkg - Resolve dep target pointers w/provides        /*{{{*/
 // ---------------------------------------------------------------------
 /* This intellegently looks at dep target packages and tries to figure
 // DepIterator::SmartTargetPkg - Resolve dep target pointers w/provides        /*{{{*/
 // ---------------------------------------------------------------------
 /* This intellegently looks at dep target packages and tries to figure


@@ -560,7 +575,7 @@ bool pkgCache::DepIterator::SmartTargetPkg(PkgIterator &Result) const
       virtual package libc-dev which is provided by libc5-dev and libc6-dev
       we must ignore libc5-dev when considering the provides list. */ 
    PrvIterator PStart = Result.ProvidesList();
       virtual package libc-dev which is provided by libc5-dev and libc6-dev
       we must ignore libc5-dev when considering the provides list. */ 
    PrvIterator PStart = Result.ProvidesList();

-   for (; PStart.end() != true && PStart.OwnerPkg() == ParentPkg(); PStart++);
+   for (; PStart.end() != true && PStart.OwnerPkg() == ParentPkg(); ++PStart);

 
    // Nothing but indirect self provides
    if (PStart.end() == true)
 
    // Nothing but indirect self provides
    if (PStart.end() == true)


@@ -568,7 +583,7 @@ bool pkgCache::DepIterator::SmartTargetPkg(PkgIterator &Result) const
    
    // Check for single packages in the provides list
    PrvIterator P = PStart;
    
    // Check for single packages in the provides list
    PrvIterator P = PStart;

-   for (; P.end() != true; P++)
+   for (; P.end() != true; ++P)

    {
       // Skip over self provides
       if (P.OwnerPkg() == ParentPkg())
    {
       // Skip over self provides
       if (P.OwnerPkg() == ParentPkg())


@@ -602,34 +617,28 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets() const
       PkgIterator DPkg = TargetPkg();
 
       // Walk along the actual package providing versions
       PkgIterator DPkg = TargetPkg();
 
       // Walk along the actual package providing versions

-      for (VerIterator I = DPkg.VersionList(); I.end() == false; I++)
+      for (VerIterator I = DPkg.VersionList(); I.end() == false; ++I)

       {
       {

-        if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false)
+        if (IsIgnorable(I.ParentPkg()) == true)

            continue;
 
            continue;
 

-        if ((S->Type == pkgCache::Dep::Conflicts ||
-             S->Type == pkgCache::Dep::DpkgBreaks ||
-             S->Type == pkgCache::Dep::Obsoletes) &&
-            ParentPkg() == I.ParentPkg())
+        if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false)

            continue;
            continue;

-        
+

         Size++;
         if (Res != 0)
            *End++ = I;
       }
       
       // Follow all provides
         Size++;
         if (Res != 0)
            *End++ = I;
       }
       
       // Follow all provides

-      for (PrvIterator I = DPkg.ProvidesList(); I.end() == false; I++)
+      for (PrvIterator I = DPkg.ProvidesList(); I.end() == false; ++I)

       {
       {

-        if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false)
+        if (IsIgnorable(I) == true)

            continue;
            continue;

-        
-        if ((S->Type == pkgCache::Dep::Conflicts ||
-             S->Type == pkgCache::Dep::DpkgBreaks ||
-             S->Type == pkgCache::Dep::Obsoletes) &&
-            ParentPkg() == I.OwnerPkg())
+
+        if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false)

            continue;
            continue;

-        
+

         Size++;
         if (Res != 0)
            *End++ = I.OwnerVer();
         Size++;
         if (Res != 0)
            *End++ = I.OwnerVer();


@@ -671,10 +680,53 @@ void pkgCache::DepIterator::GlobOr(DepIterator &Start,DepIterator &End)
    }
 }
                                                                        /*}}}*/
    }
 }
                                                                        /*}}}*/

+// DepIterator::IsIgnorable - should this packag/providr be ignored?   /*{{{*/
+// ---------------------------------------------------------------------
+/* Deps like self-conflicts should be ignored as well as implicit conflicts
+   on virtual packages. */
+bool pkgCache::DepIterator::IsIgnorable(PkgIterator const &Pkg) const
+{
+   if (ParentPkg() == TargetPkg())
+      return IsNegative();
+
+   return false;
+}
+bool pkgCache::DepIterator::IsIgnorable(PrvIterator const &Prv) const
+{
+   if (IsNegative() == false)
+      return false;
+
+   PkgIterator const Pkg = ParentPkg();
+   /* Provides may never be applied against the same package (or group)
+      if it is a conflicts. See the comment above. */
+   if (Prv.OwnerPkg()->Group == Pkg->Group)
+      return true;
+   // Implicit group-conflicts should not be applied on providers of other groups
+   if (Pkg->Group == TargetPkg()->Group && Prv.OwnerPkg()->Group != Pkg->Group)
+      return true;
+
+   return false;
+}
+                                                                       /*}}}*/
+// DepIterator::IsMultiArchImplicit - added by the cache generation    /*{{{*/
+// ---------------------------------------------------------------------
+/* MultiArch can be translated to SingleArch for an resolver and we did so,
+   by adding dependencies to help the resolver understand the problem, but
+   sometimes it is needed to identify these to ignore them… */
+bool pkgCache::DepIterator::IsMultiArchImplicit() const
+{
+   if (ParentPkg()->Arch != TargetPkg()->Arch &&
+       (S->Type == pkgCache::Dep::Replaces ||
+       S->Type == pkgCache::Dep::DpkgBreaks ||
+       S->Type == pkgCache::Dep::Conflicts))
+      return true;
+   return false;
+}
+                                                                       /*}}}*/

 // ostream operator to handle string representation of a dependecy     /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // ostream operator to handle string representation of a dependecy     /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-std::ostream& operator<<(ostream& out, pkgCache::DepIterator D)
+std::ostream& operator<<(std::ostream& out, pkgCache::DepIterator D)

 {
    if (D.end() == true)
       return out << "invalid dependency";
 {
    if (D.end() == true)
       return out << "invalid dependency";


@@ -712,7 +764,7 @@ int pkgCache::VerIterator::CompareVer(const VerIterator &B) const
    /* Start at A and look for B. If B is found then A > B otherwise
       B was before A so A < B */
    VerIterator I = *this;
    /* Start at A and look for B. If B is found then A > B otherwise
       B was before A so A < B */
    VerIterator I = *this;

-   for (;I.end() == false; I++)
+   for (;I.end() == false; ++I)

       if (I == B)
         return 1;
    return -1;
       if (I == B)
         return 1;
    return -1;


@@ -724,7 +776,7 @@ int pkgCache::VerIterator::CompareVer(const VerIterator &B) const
 bool pkgCache::VerIterator::Downloadable() const
 {
    VerFileIterator Files = FileList();
 bool pkgCache::VerIterator::Downloadable() const
 {
    VerFileIterator Files = FileList();

-   for (; Files.end() == false; Files++)
+   for (; Files.end() == false; ++Files)

       if ((Files.File()->Flags & pkgCache::Flag::NotSource) != pkgCache::Flag::NotSource)
         return true;
    return false;
       if ((Files.File()->Flags & pkgCache::Flag::NotSource) != pkgCache::Flag::NotSource)
         return true;
    return false;


@@ -737,16 +789,13 @@ bool pkgCache::VerIterator::Downloadable() const
 bool pkgCache::VerIterator::Automatic() const
 {
    VerFileIterator Files = FileList();
 bool pkgCache::VerIterator::Automatic() const
 {
    VerFileIterator Files = FileList();

-   for (; Files.end() == false; Files++)
+   for (; Files.end() == false; ++Files)

       // Do not check ButAutomaticUpgrades here as it is kind of automatic…
       if ((Files.File()->Flags & pkgCache::Flag::NotAutomatic) != pkgCache::Flag::NotAutomatic)
         return true;
    return false;
 }
                                                                        /*}}}*/
       // Do not check ButAutomaticUpgrades here as it is kind of automatic…
       if ((Files.File()->Flags & pkgCache::Flag::NotAutomatic) != pkgCache::Flag::NotAutomatic)
         return true;
    return false;
 }
                                                                        /*}}}*/

-// VerIterator::Pseudo - deprecated no-op method                       /*{{{*/
-bool pkgCache::VerIterator::Pseudo() const { return false; }
-                                                                       /*}}}*/

 // VerIterator::NewestFile - Return the newest file version relation   /*{{{*/
 // ---------------------------------------------------------------------
 /* This looks at the version numbers associated with all of the sources
 // VerIterator::NewestFile - Return the newest file version relation   /*{{{*/
 // ---------------------------------------------------------------------
 /* This looks at the version numbers associated with all of the sources


@@ -755,7 +804,7 @@ pkgCache::VerFileIterator pkgCache::VerIterator::NewestFile() const
 {
    VerFileIterator Files = FileList();
    VerFileIterator Highest = Files;
 {
    VerFileIterator Files = FileList();
    VerFileIterator Highest = Files;

-   for (; Files.end() == false; Files++)
+   for (; Files.end() == false; ++Files)

    {
       if (Owner->VS->CmpReleaseVer(Files.File().Version(),Highest.File().Version()) > 0)
         Highest = Files;
    {
       if (Owner->VS->CmpReleaseVer(Files.File().Version(),Highest.File().Version()) > 0)
         Highest = Files;


@@ -772,7 +821,7 @@ string pkgCache::VerIterator::RelStr() const
 {
    bool First = true;
    string Res;
 {
    bool First = true;
    string Res;

-   for (pkgCache::VerFileIterator I = this->FileList(); I.end() == false; I++)
+   for (pkgCache::VerFileIterator I = this->FileList(); I.end() == false; ++I)

    {
       // Do not print 'not source' entries'
       pkgCache::PkgFileIterator File = I.File();
    {
       // Do not print 'not source' entries'
       pkgCache::PkgFileIterator File = I.File();


@@ -781,7 +830,7 @@ string pkgCache::VerIterator::RelStr() const
 
       // See if we have already printed this out..
       bool Seen = false;
 
       // See if we have already printed this out..
       bool Seen = false;

-      for (pkgCache::VerFileIterator J = this->FileList(); I != J; J++)
+      for (pkgCache::VerFileIterator J = this->FileList(); I != J; ++J)

       {
         pkgCache::PkgFileIterator File2 = J.File();
         if (File2->Label == 0 || File->Label == 0)
       {
         pkgCache::PkgFileIterator File2 = J.File();
         if (File2->Label == 0 || File->Label == 0)


@@ -882,15 +931,26 @@ pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const
 {
    std::vector<string> const lang = APT::Configuration::getLanguages();
    for (std::vector<string>::const_iterator l = lang.begin();
 {
    std::vector<string> const lang = APT::Configuration::getLanguages();
    for (std::vector<string>::const_iterator l = lang.begin();

-       l != lang.end(); l++)
+       l != lang.end(); ++l)

    {
       pkgCache::DescIterator Desc = DescriptionList();
       for (; Desc.end() == false; ++Desc)
    {
       pkgCache::DescIterator Desc = DescriptionList();
       for (; Desc.end() == false; ++Desc)

-        if (*l == Desc.LanguageCode() ||
-            (*l == "en" && strcmp(Desc.LanguageCode(),"") == 0))
+        if (*l == Desc.LanguageCode())

            break;
       if (Desc.end() == true)
            break;
       if (Desc.end() == true)

-        continue;
+      {
+        if (*l == "en")
+        {
+           Desc = DescriptionList();
+           for (; Desc.end() == false; ++Desc)
+              if (strcmp(Desc.LanguageCode(), "") == 0)
+                 break;
+           if (Desc.end() == true)
+              continue;
+        }
+        else
+           continue;
+      }

       return Desc;
    }
    for (pkgCache::DescIterator Desc = DescriptionList();
       return Desc;
    }
    for (pkgCache::DescIterator Desc = DescriptionList();


@@ -901,3 +961,17 @@ pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const
 };
 
                                                                        /*}}}*/
 };
 
                                                                        /*}}}*/

+// PrvIterator::IsMultiArchImplicit - added by the cache generation    /*{{{*/
+// ---------------------------------------------------------------------
+/* MultiArch can be translated to SingleArch for an resolver and we did so,
+   by adding provides to help the resolver understand the problem, but
+   sometimes it is needed to identify these to ignore them… */
+bool pkgCache::PrvIterator::IsMultiArchImplicit() const
+{
+   pkgCache::PkgIterator const Owner = OwnerPkg();
+   pkgCache::PkgIterator const Parent = ParentPkg();
+   if (Owner->Arch != Parent->Arch || Owner->Name == Parent->Name)
+      return true;
+   return false;
+}
+                                                                       /*}}}*/