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Commit	Line	Data
	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	// $Id: pkgcachegen.h,v 1.15 1999/05/23 22:55:54 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	// Header section: pkglib
	20	#ifndef PKGLIB_PKGCACHEGEN_H
	21	#define PKGLIB_PKGCACHEGEN_H
	22
	23	#ifdef __GNUG__
	24	#pragma interface "apt-pkg/pkgcachegen.h"
	25	#endif
	26
	27	#include <apt-pkg/pkgcache.h>
	28
	29	class pkgSourceList;
	30	class OpProgress;
	31	class MMap;
	32
	33	class pkgCacheGenerator
	34	{
	35	private:
	36
	37	pkgCache::StringItem *UniqHash[26];
	38
	39	public:
	40
	41	class ListParser;
	42	friend 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	unsigned long WriteUniqString(const char *S,unsigned int Size);
	58	inline unsigned long WriteUniqString(string S) {return WriteUniqString(S.c_str(),S.length());};
	59
	60	public:
	61
	62	bool SelectFile(string File,unsigned long Flags = 0);
	63	bool MergeList(ListParser &List);
	64	inline pkgCache &GetCache() {return Cache;};
	65	inline pkgCache::PkgFileIterator GetCurFile()
	66	{return pkgCache::PkgFileIterator(Cache,CurrentFile);};
	67
	68	pkgCacheGenerator(DynamicMMap &Map,OpProgress &Progress);
	69	~pkgCacheGenerator();
	70	};
	71
	72	bool pkgSrcCacheCheck(pkgSourceList &List);
	73	bool pkgPkgCacheCheck(string CacheFile);
	74	bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress);
	75	MMap *pkgMakeStatusCacheMem(pkgSourceList &List,OpProgress &Progress);
	76
	77	// This is the abstract package list parser class.
	78	class pkgCacheGenerator::ListParser
	79	{
	80	pkgCacheGenerator *Owner;
	81	friend pkgCacheGenerator;
	82
	83	// Some cache items
	84	pkgCache::VerIterator OldDepVer;
	85	__apt_ptrloc *OldDepLast;
	86
	87	protected:
	88
	89	inline unsigned long WriteUniqString(string S) {return Owner->WriteUniqString(S);};
	90	inline unsigned long WriteUniqString(const char *S,unsigned int Size) {return Owner->WriteUniqString(S,Size);};
	91	inline unsigned long WriteString(string S) {return Owner->Map.WriteString(S);};
	92	inline unsigned long WriteString(const char *S,unsigned int Size) {return Owner->Map.WriteString(S,Size);};
	93	bool NewDepends(pkgCache::VerIterator Ver,string Package,
	94	string Version,unsigned int Op,
	95	unsigned int Type);
	96	bool NewProvides(pkgCache::VerIterator Ver,string Package,string Version);
	97
	98	public:
	99
	100	// These all operate against the current section
	101	virtual string Package() = 0;
	102	virtual string Version() = 0;
	103	virtual bool NewVersion(pkgCache::VerIterator Ver) = 0;
	104	virtual unsigned short VersionHash() = 0;
	105	virtual bool UsePackage(pkgCache::PkgIterator Pkg,
	106	pkgCache::VerIterator Ver) = 0;
	107	virtual unsigned long Offset() = 0;
	108	virtual unsigned long Size() = 0;
	109
	110	virtual bool Step() = 0;
	111
	112	virtual ~ListParser() {};
	113	};
	114
	115	#endif