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Commit	Line	Data
	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	// $Id: pkgcachegen.h,v 1.18 2001/02/20 07:03:17 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	bool NewPackage(pkgCache::PkgIterator &Pkg,string Pkg);
	54	bool NewFileVer(pkgCache::VerIterator &Ver,ListParser &List);
	55	unsigned long NewVersion(pkgCache::VerIterator &Ver,string VerStr,unsigned long Next);
	56
	57	public:
	58
	59	unsigned long WriteUniqString(const char *S,unsigned int Size);
	60	inline unsigned long WriteUniqString(string S) {return WriteUniqString(S.c_str(),S.length());};
	61
	62	void DropProgress() {Progress = 0;};
	63	bool SelectFile(string File,string Site,pkgIndexFile const &Index,
	64	unsigned long Flags = 0);
	65	bool MergeList(ListParser &List,pkgCache::VerIterator *Ver = 0);
	66	inline pkgCache &GetCache() {return Cache;};
	67	inline pkgCache::PkgFileIterator GetCurFile()
	68	{return pkgCache::PkgFileIterator(Cache,CurrentFile);};
	69
	70	pkgCacheGenerator(DynamicMMap Map,OpProgress Progress);
	71	~pkgCacheGenerator();
	72	};
	73
	74	// This is the abstract package list parser class.
	75	class pkgCacheGenerator::ListParser
	76	{
	77	pkgCacheGenerator *Owner;
	78	friend class pkgCacheGenerator;
	79
	80	// Some cache items
	81	pkgCache::VerIterator OldDepVer;
	82	map_ptrloc *OldDepLast;
	83
	84	protected:
	85
	86	inline unsigned long WriteUniqString(string S) {return Owner->WriteUniqString(S);};
	87	inline unsigned long WriteUniqString(const char *S,unsigned int Size) {return Owner->WriteUniqString(S,Size);};
	88	inline unsigned long WriteString(string S) {return Owner->Map.WriteString(S);};
	89	inline unsigned long WriteString(const char *S,unsigned int Size) {return Owner->Map.WriteString(S,Size);};
	90	bool NewDepends(pkgCache::VerIterator Ver,string Package,
	91	string Version,unsigned int Op,
	92	unsigned int Type);
	93	bool NewProvides(pkgCache::VerIterator Ver,string Package,string Version);
	94
	95	public:
	96
	97	// These all operate against the current section
	98	virtual string Package() = 0;
	99	virtual string Version() = 0;
	100	virtual bool NewVersion(pkgCache::VerIterator Ver) = 0;
	101	virtual unsigned short VersionHash() = 0;
	102	virtual bool UsePackage(pkgCache::PkgIterator Pkg,
	103	pkgCache::VerIterator Ver) = 0;
	104	virtual unsigned long Offset() = 0;
	105	virtual unsigned long Size() = 0;
	106
	107	virtual bool Step() = 0;
	108
	109	virtual ~ListParser() {};
	110	};
	111
	112	bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
	113	MMap **OutMap = 0,bool AllowMem = false);
	114	bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap);
	115
	116	#ifdef APT_COMPATIBILITY
	117	#if APT_COMPATIBILITY != 986
	118	#warning "Using APT_COMPATIBILITY"
	119	#endif
	120	MMap *pkgMakeStatusCacheMem(pkgSourceList &List,OpProgress &Progress)
	121	{
	122	MMap *Map = 0;
	123	if (pkgMakeStatusCache(List,Progress,&Map,true) == false)
	124	return 0;
	125	return Map;
	126	}
	127	#endif
	128
	129	#endif