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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	#include <apt-pkg/macros.h>
	22
	23	class pkgDepCache;
	24	class pkgOrderList : protected pkgCache::Namespace
	25	{
	26	protected:
	27
	28	pkgDepCache &Cache;
	29	typedef bool (pkgOrderList::*DepFunc)(DepIterator D);
	30
	31	// These are the currently selected ordering functions
	32	DepFunc Primary;
	33	DepFunc Secondary;
	34	DepFunc RevDepends;
	35	DepFunc Remove;
	36
	37	// State
	38	Package **End;
	39	Package **List;
	40	Package **AfterEnd;
	41	std::string *FileList;
	42	DepIterator Loops[20];
	43	int LoopCount;
	44	int Depth;
	45	unsigned short *Flags;
	46	bool Debug;
	47
	48	// Main visit function
	49	__deprecated bool VisitNode(PkgIterator Pkg) { return VisitNode(Pkg, "UNKNOWN"); };
	50	bool VisitNode(PkgIterator Pkg, char const* from);
	51	bool VisitDeps(DepFunc F,PkgIterator Pkg);
	52	bool VisitRDeps(DepFunc F,PkgIterator Pkg);
	53	bool VisitRProvides(DepFunc F,VerIterator Ver);
	54	bool VisitProvides(DepIterator Pkg,bool Critical);
	55
	56	// Dependency checking functions.
	57	bool DepUnPackCrit(DepIterator D);
	58	bool DepUnPackPreD(DepIterator D);
	59	bool DepUnPackPre(DepIterator D);
	60	bool DepUnPackDep(DepIterator D);
	61	bool DepConfigure(DepIterator D);
	62	bool DepRemove(DepIterator D);
	63
	64	// Analysis helpers
	65	bool AddLoop(DepIterator D);
	66	bool CheckDep(DepIterator D);
	67	bool DoRun();
	68
	69	// For pre sorting
	70	static pkgOrderList *Me;
	71	static int OrderCompareA(const void a, const void b);
	72	static int OrderCompareB(const void a, const void b);
	73	int FileCmp(PkgIterator A,PkgIterator B);
	74
	75	public:
	76
	77	typedef Package **iterator;
	78
	79	/* State flags
	80	The Loop flag can be set on a package that is currently being processed by either SmartConfigure or
	81	SmartUnPack. This allows the package manager to tell when a loop has been formed as it will try to
	82	SmartUnPack or SmartConfigure a package with the Loop flag set. It will then either stop (as it knows
	83	that the operation is unnecessary as its already in process), or in the case of the conflicts resolution
	84	in SmartUnPack, use EarlyRemove to resolve the situation. */
	85	enum Flags {Added = (1 << 0), AddPending = (1 << 1),
	86	Immediate = (1 << 2), Loop = (1 << 3),
	87	UnPacked = (1 << 4), Configured = (1 << 5),
	88	Removed = (1 << 6), // Early Remove
	89	InList = (1 << 7),
	90	After = (1 << 8),
	91	States = (UnPacked \| Configured \| Removed)};
	92
	93	// Flag manipulators
	94	inline bool IsFlag(PkgIterator Pkg,unsigned long F) {return (Flags[Pkg->ID] & F) == F;};
	95	inline bool IsFlag(Package *Pkg,unsigned long F) {return (Flags[Pkg->ID] & F) == F;};
	96	void Flag(PkgIterator Pkg,unsigned long State, unsigned long F) {Flags[Pkg->ID] = (Flags[Pkg->ID] & (~F)) \| State;};
	97	inline void Flag(PkgIterator Pkg,unsigned long F) {Flags[Pkg->ID] \|= F;};
	98	inline void Flag(Package *Pkg,unsigned long F) {Flags[Pkg->ID] \|= F;};
	99	// RmFlag removes a flag from a package
	100	inline void RmFlag(Package *Pkg,unsigned long F) {Flags[Pkg->ID] &= ~F;};
	101	// IsNow will return true if the Pkg has been not been either configured or unpacked
	102	inline bool IsNow(PkgIterator Pkg) {return (Flags[Pkg->ID] & (States & (~Removed))) == 0;};
	103	bool IsMissing(PkgIterator Pkg);
	104	void WipeFlags(unsigned long F);
	105	void SetFileList(std::string *FileList) {this->FileList = FileList;};
	106
	107	// Accessors
	108	inline iterator begin() {return List;};
	109	inline iterator end() {return End;};
	110	inline void push_back(Package Pkg) {(End++) = Pkg;};
	111	inline void push_back(PkgIterator Pkg) {*(End++) = Pkg;};
	112	inline void pop_back() {End--;};
	113	inline bool empty() {return End == List;};
	114	inline unsigned int size() {return End - List;};
	115
	116	// Ordering modes
	117	bool OrderCritical();
	118	bool OrderUnpack(std::string *FileList = 0);
	119	bool OrderConfigure();
	120
	121	int Score(PkgIterator Pkg);
	122
	123	pkgOrderList(pkgDepCache *Cache);
	124	~pkgOrderList();
	125	};
	126
	127	#endif