From b07aeb1a6e24825e534167a737043441e871de9f Mon Sep 17 00:00:00 2001 From: David Kalnischkies Date: Fri, 12 Jun 2015 02:08:53 +0200 Subject: store Release files data in the Cache We used to read the Release file for each Packages file and store the data in the PackageFile struct even through potentially many Packages (and Translation-*) files could use the same data. The point of the exercise isn't the duplicated data through. Having the Release files as first-class citizens in the Cache allows us to properly track their state as well as allows us to use the information also for files which aren't in the cache, but where we know to which Release file they belong (Sources are an example for this). This modifies the pkgCache structs, especially the PackagesFile struct which depending on how libapt users access the data in these structs can mean huge breakage or no visible change. As a single data point: aptitude seems to be fine with this. Even if there is breakage it is trivial to fix in a backportable way while avoiding breakage for everyone would be a huge pain for us. Note that not all PackageFile structs have a corresponding ReleaseFile. In particular the dpkg/status file as well as *.deb files have not. As these have only a Archive property need, the Component property takes over this duty and the ReleaseFile remains zero. This is also the reason why it isn't needed nor particularily recommended to change from PackagesFile to ReleaseFile blindly. Sticking with the earlier is usually the better option. --- apt-pkg/cacheiterators.h | 46 ++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 40 insertions(+), 6 deletions(-) (limited to 'apt-pkg/cacheiterators.h') diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h index fe798799c..301da6fc4 100644 --- a/apt-pkg/cacheiterators.h +++ b/apt-pkg/cacheiterators.h @@ -367,27 +367,61 @@ class pkgCache::PrvIterator : public Iterator { } }; /*}}}*/ -// Package file /*{{{*/ -class pkgCache::PkgFileIterator : public Iterator { +// Release file /*{{{*/ +class pkgCache::RlsFileIterator : public Iterator { protected: - inline PackageFile* OwnerPointer() const { - return (Owner != 0) ? Owner->PkgFileP : 0; + inline ReleaseFile* OwnerPointer() const { + return (Owner != 0) ? Owner->RlsFileP : 0; } public: // Iteration - void operator ++(int) {if (S != Owner->PkgFileP) S = Owner->PkgFileP + S->NextFile;} + void operator ++(int) {if (S != Owner->RlsFileP) S = Owner->RlsFileP + S->NextFile;} inline void operator ++() {operator ++(0);} // Accessors inline const char *FileName() const {return S->FileName == 0?0:Owner->StrP + S->FileName;} inline const char *Archive() const {return S->Archive == 0?0:Owner->StrP + S->Archive;} - inline const char *Component() const {return S->Component == 0?0:Owner->StrP + S->Component;} inline const char *Version() const {return S->Version == 0?0:Owner->StrP + S->Version;} inline const char *Origin() const {return S->Origin == 0?0:Owner->StrP + S->Origin;} inline const char *Codename() const {return S->Codename ==0?0:Owner->StrP + S->Codename;} inline const char *Label() const {return S->Label == 0?0:Owner->StrP + S->Label;} inline const char *Site() const {return S->Site == 0?0:Owner->StrP + S->Site;} + inline bool Flagged(pkgCache::Flag::ReleaseFileFlags const flag) const {return (S->Flags & flag) == flag; } + + bool IsOk(); + std::string RelStr(); + + // Constructors + inline RlsFileIterator() : Iterator() {} + inline RlsFileIterator(pkgCache &Owner) : Iterator(Owner, Owner.RlsFileP) {} + inline RlsFileIterator(pkgCache &Owner,ReleaseFile *Trg) : Iterator(Owner, Trg) {} +}; + /*}}}*/ +// Package file /*{{{*/ +class pkgCache::PkgFileIterator : public Iterator { + protected: + inline PackageFile* OwnerPointer() const { + return (Owner != 0) ? Owner->PkgFileP : 0; + } + + public: + // Iteration + void operator ++(int) {if (S != Owner->PkgFileP) S = Owner->PkgFileP + S->NextFile;} + inline void operator ++() {operator ++(0);} + + // Accessors + inline const char *FileName() const {return S->FileName == 0?0:Owner->StrP + S->FileName;} + inline pkgCache::RlsFileIterator ReleaseFile() const {return RlsFileIterator(*Owner, Owner->RlsFileP + S->Release);} + inline const char *Archive() const {return S->Release == 0 ? Component() : ReleaseFile().Archive();} + inline const char *Version() const {return S->Release == 0 ? NULL : ReleaseFile().Version();} + inline const char *Origin() const {return S->Release == 0 ? NULL : ReleaseFile().Origin();} + inline const char *Codename() const {return S->Release == 0 ? NULL : ReleaseFile().Codename();} + inline const char *Label() const {return S->Release == 0 ? NULL : ReleaseFile().Label();} + inline const char *Site() const {return S->Release == 0 ? NULL : ReleaseFile().Site();} + inline bool Flagged(pkgCache::Flag::ReleaseFileFlags const flag) const {return S->Release== 0 ? false : ReleaseFile().Flagged(flag);} + inline bool Flagged(pkgCache::Flag::PkgFFlags const flag) const {return (S->Flags & flag) == flag;} + inline const char *Component() const {return S->Component == 0?0:Owner->StrP + S->Component;} inline const char *Architecture() const {return S->Architecture == 0?0:Owner->StrP + S->Architecture;} inline const char *IndexType() const {return S->IndexType == 0?0:Owner->StrP + S->IndexType;} -- cgit v1.2.3