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Commit	Line	Data
	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	// $Id: pkgcachegen.h,v 1.19 2002/07/08 03:13:30 jgg Exp $
	4	/* ######################################################################
	5
	6	Package Cache Generator - Generator for the cache structure.
	7
	8	This builds the cache structure from the abstract package list parser.
	9	Each archive source has it's own list parser that is instantiated by
	10	the caller to provide data for the generator.
	11
	12	Parts of the cache are created by this generator class while other
	13	parts are created by the list parser. The list parser is responsible
	14	for creating version, depends and provides structures, and some of
	15	their contents
	16
	17	##################################################################### */
	18	/}}}/
	19	#ifndef PKGLIB_PKGCACHEGEN_H
	20	#define PKGLIB_PKGCACHEGEN_H
	21
	22	#ifdef __GNUG__
	23	#pragma interface "apt-pkg/pkgcachegen.h"
	24	#endif
	25
	26	#include <apt-pkg/pkgcache.h>
	27
	28	class pkgSourceList;
	29	class OpProgress;
	30	class MMap;
	31	class pkgIndexFile;
	32
	33	class pkgCacheGenerator
	34	{
	35	private:
	36
	37	pkgCache::StringItem *UniqHash[26];
	38
	39	public:
	40
	41	class ListParser;
	42	friend class ListParser;
	43
	44	protected:
	45
	46	DynamicMMap &Map;
	47	pkgCache Cache;
	48	OpProgress *Progress;
	49
	50	string PkgFileName;
	51	pkgCache::PackageFile *CurrentFile;
	52
	53	// Flag file dependencies
	54	bool FoundFileDeps;
	55
	56	bool NewPackage(pkgCache::PkgIterator &Pkg,const string &Pkg);
	57	bool NewFileVer(pkgCache::VerIterator &Ver,ListParser &List);
	58	unsigned long NewVersion(pkgCache::VerIterator &Ver,const string &VerStr,unsigned long Next);
	59
	60	public:
	61
	62	unsigned long WriteUniqString(const char *S,unsigned int Size);
	63	inline unsigned long WriteUniqString(const string &S) {return WriteUniqString(S.c_str(),S.length());};
	64
	65	void DropProgress() {Progress = 0;};
	66	bool SelectFile(const string &File,const string &Site,pkgIndexFile const &Index,
	67	unsigned long Flags = 0);
	68	bool MergeList(ListParser &List,pkgCache::VerIterator *Ver = 0);
	69	inline pkgCache &GetCache() {return Cache;};
	70	inline pkgCache::PkgFileIterator GetCurFile()
	71	{return pkgCache::PkgFileIterator(Cache,CurrentFile);};
	72
	73	bool HasFileDeps() {return FoundFileDeps;};
	74	bool MergeFileProvides(ListParser &List);
	75
	76	pkgCacheGenerator(DynamicMMap Map,OpProgress Progress);
	77	~pkgCacheGenerator();
	78	};
	79
	80	// This is the abstract package list parser class.
	81	class pkgCacheGenerator::ListParser
	82	{
	83	pkgCacheGenerator *Owner;
	84	friend class pkgCacheGenerator;
	85
	86	// Some cache items
	87	pkgCache::VerIterator OldDepVer;
	88	map_ptrloc *OldDepLast;
	89
	90	// Flag file dependencies
	91	bool FoundFileDeps;
	92
	93	protected:
	94
	95	inline unsigned long WriteUniqString(string S) {return Owner->WriteUniqString(S);};
	96	inline unsigned long WriteUniqString(const char *S,unsigned int Size) {return Owner->WriteUniqString(S,Size);};
	97	inline unsigned long WriteString(const string &S) {return Owner->Map.WriteString(S);};
	98	inline unsigned long WriteString(const char *S,unsigned int Size) {return Owner->Map.WriteString(S,Size);};
	99	bool NewDepends(pkgCache::VerIterator Ver,const string &Package,
	100	const string &Version,unsigned int Op,
	101	unsigned int Type);
	102	bool NewProvides(pkgCache::VerIterator Ver,const string &Package,
	103	const string &Version);
	104
	105	public:
	106
	107	// These all operate against the current section
	108	virtual string Package() = 0;
	109	virtual string Version() = 0;
	110	virtual bool NewVersion(pkgCache::VerIterator Ver) = 0;
	111	virtual unsigned short VersionHash() = 0;
	112	virtual bool UsePackage(pkgCache::PkgIterator Pkg,
	113	pkgCache::VerIterator Ver) = 0;
	114	virtual unsigned long Offset() = 0;
	115	virtual unsigned long Size() = 0;
	116
	117	virtual bool Step() = 0;
	118
	119	inline bool HasFileDeps() {return FoundFileDeps;};
	120	virtual bool CollectFileProvides(pkgCache &Cache,
	121	pkgCache::VerIterator Ver) {return true;};
	122
	123	ListParser() : FoundFileDeps(false) {};
	124	virtual ~ListParser() {};
	125	};
	126
	127	bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
	128	MMap **OutMap = 0,bool AllowMem = false);
	129	bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap);
	130
	131	#ifdef APT_COMPATIBILITY
	132	#if APT_COMPATIBILITY != 986
	133	#warning "Using APT_COMPATIBILITY"
	134	#endif
	135	MMap *pkgMakeStatusCacheMem(pkgSourceList &List,OpProgress &Progress)
	136	{
	137	MMap *Map = 0;
	138	if (pkgMakeStatusCache(List,Progress,&Map,true) == false)
	139	return 0;
	140	return Map;
	141	}
	142	#endif
	143
	144	#endif