apt @VERSION@
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00001 // -*- mode: cpp; mode: fold -*- 00002 // Description /*{{{*/ 00003 // $Id: cachefile.h,v 1.5 2002/04/27 04:28:04 jgg Exp $ 00004 /* ###################################################################### 00005 00006 CacheFile - Simple wrapper class for opening, generating and whatnot 00007 00008 This class implements a simple 2 line mechanism to open various sorts 00009 of caches. It can operate as root, as not root, show progress and so on, 00010 it transparently handles everything necessary. 00011 00012 This means it can rebuild caches from the source list and instantiates 00013 and prepares the standard policy mechanism. 00014 00015 ##################################################################### */ 00016 /*}}}*/ 00017 #ifndef PKGLIB_CACHEFILE_H 00018 #define PKGLIB_CACHEFILE_H 00019 00020 00021 #include <apt-pkg/depcache.h> 00022 #include <apt-pkg/acquire.h> 00023 #include <apt-pkg/policy.h> 00024 #include <apt-pkg/sourcelist.h> 00025 00026 class pkgCacheFile 00027 { 00028 protected: 00029 00030 MMap *Map; 00031 pkgCache *Cache; 00032 pkgDepCache *DCache; 00033 pkgSourceList *SrcList; 00034 00035 public: 00036 pkgPolicy *Policy; 00037 00038 // We look pretty much exactly like a pointer to a dep cache 00039 inline operator pkgCache &() {return *Cache;}; 00040 inline operator pkgCache *() {return Cache;}; 00041 inline operator pkgDepCache &() {return *DCache;}; 00042 inline operator pkgDepCache *() {return DCache;}; 00043 inline operator pkgPolicy &() {return *Policy;}; 00044 inline operator pkgPolicy *() {return Policy;}; 00045 inline operator pkgSourceList &() {return *SrcList;}; 00046 inline operator pkgSourceList *() {return SrcList;}; 00047 inline pkgDepCache *operator ->() {return DCache;}; 00048 inline pkgDepCache &operator *() {return *DCache;}; 00049 inline pkgDepCache::StateCache &operator [](pkgCache::PkgIterator const &I) {return (*DCache)[I];}; 00050 inline unsigned char &operator [](pkgCache::DepIterator const &I) {return (*DCache)[I];}; 00051 00052 bool BuildCaches(OpProgress *Progress = NULL,bool WithLock = true); 00053 __deprecated bool BuildCaches(OpProgress &Progress,bool const &WithLock = true) { return BuildCaches(&Progress, WithLock); }; 00054 bool BuildSourceList(OpProgress *Progress = NULL); 00055 bool BuildPolicy(OpProgress *Progress = NULL); 00056 bool BuildDepCache(OpProgress *Progress = NULL); 00057 bool Open(OpProgress *Progress = NULL, bool WithLock = true); 00058 inline bool ReadOnlyOpen(OpProgress *Progress = NULL) { return Open(Progress, false); }; 00059 __deprecated bool Open(OpProgress &Progress,bool const &WithLock = true) { return Open(&Progress, WithLock); }; 00060 void Close(); 00061 00062 inline pkgCache* GetPkgCache() { BuildCaches(NULL, false); return Cache; }; 00063 inline pkgDepCache* GetDepCache() { BuildDepCache(); return DCache; }; 00064 inline pkgPolicy* GetPolicy() { BuildPolicy(); return Policy; }; 00065 inline pkgSourceList* GetSourceList() { BuildSourceList(); return SrcList; }; 00066 00067 inline bool IsPkgCacheBuilt() const { return (Cache != NULL); }; 00068 inline bool IsDepCacheBuilt() const { return (DCache != NULL); }; 00069 inline bool IsPolicyBuilt() const { return (Policy != NULL); }; 00070 inline bool IsSrcListBuilt() const { return (SrcList != NULL); }; 00071 00072 pkgCacheFile(); 00073 virtual ~pkgCacheFile(); 00074 }; 00075 00076 #endif