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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
	23	#include <apt-pkg/pkgcache.h>
	24	#include <apt-pkg/md5.h>
	25
	26	class pkgSourceList;
	27	class OpProgress;
	28	class MMap;
	29	class pkgIndexFile;
	30
	31	class pkgCacheGenerator
	32	{
	33	private:
	34
	35	pkgCache::StringItem *UniqHash[26];
	36
	37	public:
	38
	39	class ListParser;
	40	friend class ListParser;
	41
	42	protected:
	43
	44	DynamicMMap &Map;
	45	pkgCache Cache;
	46	OpProgress *Progress;
	47
	48	string PkgFileName;
	49	pkgCache::PackageFile *CurrentFile;
	50
	51	// Flag file dependencies
	52	bool FoundFileDeps;
	53
	54	bool NewPackage(pkgCache::PkgIterator &Pkg,const string &Pkg);
	55	bool NewFileVer(pkgCache::VerIterator &Ver,ListParser &List);
	56	bool NewFileDesc(pkgCache::DescIterator &Desc,ListParser &List);
	57	unsigned long NewVersion(pkgCache::VerIterator &Ver,const string &VerStr,unsigned long Next);
	58	map_ptrloc NewDescription(pkgCache::DescIterator &Desc,const string &Lang,const MD5SumValue &md5sum,map_ptrloc 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 string Description() = 0;
	112	virtual string DescriptionLanguage() = 0;
	113	virtual MD5SumValue Description_md5() = 0;
	114	virtual unsigned short VersionHash() = 0;
	115	virtual bool UsePackage(pkgCache::PkgIterator Pkg,
	116	pkgCache::VerIterator Ver) = 0;
	117	virtual unsigned long Offset() = 0;
	118	virtual unsigned long Size() = 0;
	119
	120	virtual bool Step() = 0;
	121
	122	inline bool HasFileDeps() {return FoundFileDeps;};
	123	virtual bool CollectFileProvides(pkgCache &Cache,
	124	pkgCache::VerIterator Ver) {return true;};
	125
	126	ListParser() : FoundFileDeps(false) {};
	127	virtual ~ListParser() {};
	128	};
	129
	130	bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
	131	MMap **OutMap = 0,bool AllowMem = false);
	132	bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap);
	133
	134	#ifdef APT_COMPATIBILITY
	135	#if APT_COMPATIBILITY != 986
	136	#warning "Using APT_COMPATIBILITY"
	137	#endif
	138	MMap *pkgMakeStatusCacheMem(pkgSourceList &List,OpProgress &Progress)
	139	{
	140	MMap *Map = 0;
	141	if (pkgMakeStatusCache(List,Progress,&Map,true) == false)
	142	return 0;
	143	return Map;
	144	}
	145	#endif
	146
	147	#endif