// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: orderlist.h,v 1.2 1998/07/12 23:58:29 jgg Exp $ /* ###################################################################### Order List - Represents and Manipulates an ordered list of packages. A list of packages can be ordered by a number of conflicting criteria each given a specific priority. Each package also has a set of flags indicating some usefull things about it that are derived in the course of sorting. The pkgPackageManager class uses this class for all of it's installation ordering needs. ##################################################################### */ /*}}}*/ // Header section: pkglib #ifndef PKGLIB_ORDERLIST_H #define PKGLIB_ORDERLIST_H #ifdef __GNUG__ #pragma interface "apt-pkg/orderlist.h" #endif #include <apt-pkg/pkgcache.h> class pkgDepCache; class pkgOrderList { protected: pkgDepCache &Cache; // Bring some usefull types into the local scope typedef pkgCache::PkgIterator PkgIterator; typedef pkgCache::VerIterator VerIterator; typedef pkgCache::DepIterator DepIterator; typedef pkgCache::PrvIterator PrvIterator; typedef pkgCache::Package Package; typedef pkgCache::Version Version; typedef bool (pkgOrderList::*DepFunc)(DepIterator D); // These are the currently selected ordering functions DepFunc Primary; DepFunc Secondary; DepFunc RevDepends; DepFunc Remove; // State Package **End; Package **List; DepIterator Loops[20]; int LoopCount; int Depth; unsigned char *Flags; // Main visit function bool VisitNode(PkgIterator Pkg); bool VisitDeps(DepFunc F,PkgIterator Pkg); bool VisitRDeps(DepFunc F,PkgIterator Pkg); bool VisitRProvides(DepFunc F,VerIterator Ver); bool VisitProvides(DepIterator Pkg); // Dependency checking functions. bool DepUnPackCrit(DepIterator D); bool DepUnPackPreD(DepIterator D); bool DepUnPackPre(DepIterator D); bool DepUnPackDep(DepIterator D); bool DepConfigure(DepIterator D); bool DepRemove(DepIterator D); // Analysis helpers bool AddLoop(DepIterator D); bool CheckDep(DepIterator D); bool DoRun(); // For pre sorting static pkgOrderList *Me; static int OrderCompareA(const void *a, const void *b); static int OrderCompareB(const void *a, const void *b); int FileCmp(PkgIterator A,PkgIterator B); public: typedef Package **iterator; // State flags enum Flags {Added = (1 << 0), AddPending = (1 << 1), Immediate = (1 << 2), Loop = (1 << 3), UnPacked = (1 << 4), Configured = (1 << 5), Removed = (1 << 6), InList = (1 << 7), States = (UnPacked | Configured | Removed)}; // Flag manipulators inline bool IsFlag(PkgIterator Pkg,unsigned long F) {return (Flags[Pkg->ID] & F) == F;}; inline bool IsFlag(Package *Pkg,unsigned long F) {return (Flags[Pkg->ID] & F) == F;}; void Flag(PkgIterator Pkg,unsigned long State, unsigned long F) {Flags[Pkg->ID] = (Flags[Pkg->ID] & (~F)) | State;}; inline void Flag(PkgIterator Pkg,unsigned long F) {Flags[Pkg->ID] |= F;}; inline void Flag(Package *Pkg,unsigned long F) {Flags[Pkg->ID] |= F;}; inline bool IsNow(PkgIterator Pkg) {return (Flags[Pkg->ID] & States) == 0;}; void WipeFlags(unsigned long F); // Accessors inline iterator begin() {return List;}; inline iterator end() {return End;}; inline void push_back(Package *Pkg) {*(End++) = Pkg;}; inline void push_back(PkgIterator Pkg) {*(End++) = Pkg;}; inline void pop_back() {End--;}; inline bool empty() {return End == List;}; inline unsigned int size() {return End - List;}; // Ordering modes bool OrderCritical(); bool OrderUnpack(); bool OrderConfigure(); int Score(PkgIterator Pkg); pkgOrderList(pkgDepCache &Cache); ~pkgOrderList(); }; #endif