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Commit	Line	Data
	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	// $Id: orderlist.h,v 1.8 2000/01/16 08:45:47 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 usefull 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	// Header section: pkglib
	17	#ifndef PKGLIB_ORDERLIST_H
	18	#define PKGLIB_ORDERLIST_H
	19
	20	#ifdef __GNUG__
	21	#pragma interface "apt-pkg/orderlist.h"
	22	#endif
	23
	24	#include <apt-pkg/pkgcache.h>
	25
	26	class pkgDepCache;
	27	class pkgOrderList
	28	{
	29	protected:
	30
	31	pkgDepCache &Cache;
	32
	33	// Bring some usefull types into the local scope
	34	typedef pkgCache::PkgIterator PkgIterator;
	35	typedef pkgCache::VerIterator VerIterator;
	36	typedef pkgCache::DepIterator DepIterator;
	37	typedef pkgCache::PrvIterator PrvIterator;
	38	typedef pkgCache::Package Package;
	39	typedef pkgCache::Version Version;
	40	typedef bool (pkgOrderList::*DepFunc)(DepIterator D);
	41
	42	// These are the currently selected ordering functions
	43	DepFunc Primary;
	44	DepFunc Secondary;
	45	DepFunc RevDepends;
	46	DepFunc Remove;
	47
	48	// State
	49	Package **End;
	50	Package **List;
	51	Package **AfterList;
	52	Package **AfterEnd;
	53	string *FileList;
	54	DepIterator Loops[20];
	55	int LoopCount;
	56	int Depth;
	57	unsigned short *Flags;
	58
	59	// Main visit function
	60	bool VisitNode(PkgIterator Pkg);
	61	bool VisitDeps(DepFunc F,PkgIterator Pkg);
	62	bool VisitRDeps(DepFunc F,PkgIterator Pkg);
	63	bool VisitRProvides(DepFunc F,VerIterator Ver);
	64	bool VisitProvides(DepIterator Pkg,bool Critical);
	65
	66	// Dependency checking functions.
	67	bool DepUnPackCrit(DepIterator D);
	68	bool DepUnPackPreD(DepIterator D);
	69	bool DepUnPackPre(DepIterator D);
	70	bool DepUnPackDep(DepIterator D);
	71	bool DepConfigure(DepIterator D);
	72	bool DepRemove(DepIterator D);
	73
	74	// Analysis helpers
	75	bool AddLoop(DepIterator D);
	76	bool CheckDep(DepIterator D);
	77	bool DoRun();
	78
	79	// For pre sorting
	80	static pkgOrderList *Me;
	81	static int OrderCompareA(const void a, const void b);
	82	static int OrderCompareB(const void a, const void b);
	83	int FileCmp(PkgIterator A,PkgIterator B);
	84
	85	public:
	86
	87	typedef Package **iterator;
	88
	89	// State flags
	90	enum Flags {Added = (1 << 0), AddPending = (1 << 1),
	91	Immediate = (1 << 2), Loop = (1 << 3),
	92	UnPacked = (1 << 4), Configured = (1 << 5),
	93	Removed = (1 << 6), // Early Remove
	94	InList = (1 << 7),
	95	After = (1 << 8),
	96	States = (UnPacked \| Configured \| Removed)};
	97
	98	// Flag manipulators
	99	inline bool IsFlag(PkgIterator Pkg,unsigned long F) {return (Flags[Pkg->ID] & F) == F;};
	100	inline bool IsFlag(Package *Pkg,unsigned long F) {return (Flags[Pkg->ID] & F) == F;};
	101	void Flag(PkgIterator Pkg,unsigned long State, unsigned long F) {Flags[Pkg->ID] = (Flags[Pkg->ID] & (~F)) \| State;};
	102	inline void Flag(PkgIterator Pkg,unsigned long F) {Flags[Pkg->ID] \|= F;};
	103	inline void Flag(Package *Pkg,unsigned long F) {Flags[Pkg->ID] \|= F;};
	104	inline bool IsNow(PkgIterator Pkg) {return (Flags[Pkg->ID] & (States & (~Removed))) == 0;};
	105	bool IsMissing(PkgIterator Pkg);
	106	void WipeFlags(unsigned long F);
	107	void SetFileList(string *FileList) {this->FileList = FileList;};
	108
	109	// Accessors
	110	inline iterator begin() {return List;};
	111	inline iterator end() {return End;};
	112	inline void push_back(Package Pkg) {(End++) = Pkg;};
	113	inline void push_back(PkgIterator Pkg) {*(End++) = Pkg;};
	114	inline void pop_back() {End--;};
	115	inline bool empty() {return End == List;};
	116	inline unsigned int size() {return End - List;};
	117
	118	// Ordering modes
	119	bool OrderCritical();
	120	bool OrderUnpack(string *FileList = 0);
	121	bool OrderConfigure();
	122
	123	int Score(PkgIterator Pkg);
	124
	125	pkgOrderList(pkgDepCache &Cache);
	126	~pkgOrderList();
	127	};
	128
	129	#endif