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Commit	Line	Data
	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	// $Id: orderlist.h,v 1.9 2001/02/20 07:03:17 jgg Exp $
	4	/* ######################################################################
	5
	6	Order List - Represents and Manipulates an ordered list of packages.
	7
	8	A list of packages can be ordered by a number of conflicting criteria
	9	each given a specific priority. Each package also has a set of flags
	10	indicating some useful things about it that are derived in the
	11	course of sorting. The pkgPackageManager class uses this class for
	12	all of it's installation ordering needs.
	13
	14	##################################################################### */
	15	/}}}/
	16	#ifndef PKGLIB_ORDERLIST_H
	17	#define PKGLIB_ORDERLIST_H
	18
	19
	20	#include <apt-pkg/pkgcache.h>
	21
	22	class pkgDepCache;
	23	class pkgOrderList : protected pkgCache::Namespace
	24	{
	25	protected:
	26
	27	pkgDepCache &Cache;
	28	typedef bool (pkgOrderList::*DepFunc)(DepIterator D);
	29
	30	// These are the currently selected ordering functions
	31	DepFunc Primary;
	32	DepFunc Secondary;
	33	DepFunc RevDepends;
	34	DepFunc Remove;
	35
	36	// State
	37	Package **End;
	38	Package **List;
	39	Package **AfterEnd;
	40	string *FileList;
	41	DepIterator Loops[20];
	42	int LoopCount;
	43	int Depth;
	44	unsigned short *Flags;
	45	bool Debug;
	46
	47	// Main visit function
	48	bool VisitNode(PkgIterator Pkg);
	49	bool VisitDeps(DepFunc F,PkgIterator Pkg);
	50	bool VisitRDeps(DepFunc F,PkgIterator Pkg);
	51	bool VisitRProvides(DepFunc F,VerIterator Ver);
	52	bool VisitProvides(DepIterator Pkg,bool Critical);
	53
	54	// Dependency checking functions.
	55	bool DepUnPackCrit(DepIterator D);
	56	bool DepUnPackPreD(DepIterator D);
	57	bool DepUnPackPre(DepIterator D);
	58	bool DepUnPackDep(DepIterator D);
	59	bool DepConfigure(DepIterator D);
	60	bool DepRemove(DepIterator D);
	61
	62	// Analysis helpers
	63	bool AddLoop(DepIterator D);
	64	bool CheckDep(DepIterator D);
	65	bool DoRun();
	66
	67	// For pre sorting
	68	static pkgOrderList *Me;
	69	static int OrderCompareA(const void a, const void b);
	70	static int OrderCompareB(const void a, const void b);
	71	int FileCmp(PkgIterator A,PkgIterator B);
	72
	73	public:
	74
	75	typedef Package **iterator;
	76
	77	// State flags
	78	enum Flags {Added = (1 << 0), AddPending = (1 << 1),
	79	Immediate = (1 << 2), Loop = (1 << 3),
	80	UnPacked = (1 << 4), Configured = (1 << 5),
	81	Removed = (1 << 6), // Early Remove
	82	InList = (1 << 7),
	83	After = (1 << 8),
	84	States = (UnPacked \| Configured \| Removed)};
	85
	86	// Flag manipulators
	87	inline bool IsFlag(PkgIterator Pkg,unsigned long F) {return (Flags[Pkg->ID] & F) == F;};
	88	inline bool IsFlag(Package *Pkg,unsigned long F) {return (Flags[Pkg->ID] & F) == F;};
	89	void Flag(PkgIterator Pkg,unsigned long State, unsigned long F) {Flags[Pkg->ID] = (Flags[Pkg->ID] & (~F)) \| State;};
	90	inline void Flag(PkgIterator Pkg,unsigned long F) {Flags[Pkg->ID] \|= F;};
	91	inline void Flag(Package *Pkg,unsigned long F) {Flags[Pkg->ID] \|= F;};
	92	inline bool IsNow(PkgIterator Pkg) {return (Flags[Pkg->ID] & (States & (~Removed))) == 0;};
	93	bool IsMissing(PkgIterator Pkg);
	94	void WipeFlags(unsigned long F);
	95	void SetFileList(string *FileList) {this->FileList = FileList;};
	96
	97	// Accessors
	98	inline iterator begin() {return List;};
	99	inline iterator end() {return End;};
	100	inline void push_back(Package Pkg) {(End++) = Pkg;};
	101	inline void push_back(PkgIterator Pkg) {*(End++) = Pkg;};
	102	inline void pop_back() {End--;};
	103	inline bool empty() {return End == List;};
	104	inline unsigned int size() {return End - List;};
	105
	106	// Ordering modes
	107	bool OrderCritical();
	108	bool OrderUnpack(string *FileList = 0);
	109	bool OrderConfigure();
	110
	111	int Score(PkgIterator Pkg);
	112
	113	pkgOrderList(pkgDepCache *Cache);
	114	~pkgOrderList();
	115	};
	116
	117	#endif