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 { 00029 void *d; 00030 00031 protected: 00032 00033 MMap *Map; 00034 pkgCache *Cache; 00035 pkgDepCache *DCache; 00036 pkgSourceList *SrcList; 00037 00038 public: 00039 pkgPolicy *Policy; 00040 00041 // We look pretty much exactly like a pointer to a dep cache 00042 inline operator pkgCache &() {return *Cache;}; 00043 inline operator pkgCache *() {return Cache;}; 00044 inline operator pkgDepCache &() {return *DCache;}; 00045 inline operator pkgDepCache *() {return DCache;}; 00046 inline operator pkgPolicy &() {return *Policy;}; 00047 inline operator pkgPolicy *() {return Policy;}; 00048 inline operator pkgSourceList &() {return *SrcList;}; 00049 inline operator pkgSourceList *() {return SrcList;}; 00050 inline pkgDepCache *operator ->() {return DCache;}; 00051 inline pkgDepCache &operator *() {return *DCache;}; 00052 inline pkgDepCache::StateCache &operator [](pkgCache::PkgIterator const &I) {return (*DCache)[I];}; 00053 inline unsigned char &operator [](pkgCache::DepIterator const &I) {return (*DCache)[I];}; 00054 00055 bool BuildCaches(OpProgress *Progress = NULL,bool WithLock = true); 00056 __deprecated bool BuildCaches(OpProgress &Progress,bool const &WithLock = true) { return BuildCaches(&Progress, WithLock); }; 00057 bool BuildSourceList(OpProgress *Progress = NULL); 00058 bool BuildPolicy(OpProgress *Progress = NULL); 00059 bool BuildDepCache(OpProgress *Progress = NULL); 00060 bool Open(OpProgress *Progress = NULL, bool WithLock = true); 00061 inline bool ReadOnlyOpen(OpProgress *Progress = NULL) { return Open(Progress, false); }; 00062 __deprecated bool Open(OpProgress &Progress,bool const &WithLock = true) { return Open(&Progress, WithLock); }; 00063 void Close(); 00064 00065 inline pkgCache* GetPkgCache() { BuildCaches(NULL, false); return Cache; }; 00066 inline pkgDepCache* GetDepCache() { BuildDepCache(); return DCache; }; 00067 inline pkgPolicy* GetPolicy() { BuildPolicy(); return Policy; }; 00068 inline pkgSourceList* GetSourceList() { BuildSourceList(); return SrcList; }; 00069 00070 inline bool IsPkgCacheBuilt() const { return (Cache != NULL); }; 00071 inline bool IsDepCacheBuilt() const { return (DCache != NULL); }; 00072 inline bool IsPolicyBuilt() const { return (Policy != NULL); }; 00073 inline bool IsSrcListBuilt() const { return (SrcList != NULL); }; 00074 00075 pkgCacheFile(); 00076 virtual ~pkgCacheFile(); 00077 }; 00078 00079 #endif