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1 // -*- mode: cpp; mode: fold -*-
2 // Description /*{{{*/
3 // $Id: packagemanager.h,v 1.14 2001/05/07 04:24:08 jgg Exp $
4 /* ######################################################################
5
6 Package Manager - Abstacts the package manager
7
8 Three steps are
9 - Aquiration of archives (stores the list of final file names)
10 - Sorting of operations
11 - Invokation of package manager
12
13 This is the final stage when the package cache entities get converted
14 into file names and the state stored in a DepCache is transformed
15 into a series of operations.
16
17 In the final scheme of things this may serve as a director class to
18 access the actual install methods based on the file type being
19 installed.
20
21 ##################################################################### */
22 /*}}}*/
23 #ifndef PKGLIB_PACKAGEMANAGER_H
24 #define PKGLIB_PACKAGEMANAGER_H
25
26
27 #include <string>
28 #include <iostream>
29 #include <apt-pkg/pkgcache.h>
30 #include <apt-pkg/depcache.h>
31
32 using std::string;
33
34 class pkgAcquire;
35 class pkgDepCache;
36 class pkgSourceList;
37 class pkgOrderList;
38 class pkgRecords;
39 class pkgPackageManager : protected pkgCache::Namespace
40 {
41 public:
42
43 enum OrderResult {Completed,Failed,Incomplete};
44
45 protected:
46 string *FileNames;
47 pkgDepCache &Cache;
48 pkgOrderList *List;
49 bool Debug;
50
51 bool DepAdd(pkgOrderList &Order,PkgIterator P,int Depth = 0);
52 void ImmediateAdd(PkgIterator P, bool UseInstallVer);
53 virtual OrderResult OrderInstall();
54 bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
55 bool CreateOrderList();
56
57 // Analysis helpers
58 bool DepAlwaysTrue(DepIterator D);
59
60 // Install helpers
61 bool ConfigureAll();
62 bool SmartConfigure(PkgIterator Pkg);
63 bool SmartUnPack(PkgIterator Pkg);
64 bool SmartRemove(PkgIterator Pkg);
65 bool EarlyRemove(PkgIterator Pkg);
66
67 // The Actual installation implementation
68 virtual bool Install(PkgIterator /*Pkg*/,string /*File*/) {return false;};
69 virtual bool Configure(PkgIterator /*Pkg*/) {return false;};
70 virtual bool Remove(PkgIterator /*Pkg*/,bool /*Purge*/=false) {return false;};
71 virtual bool Go(int statusFd=-1) {return true;};
72 virtual void Reset() {};
73
74 // the result of the operation
75 OrderResult Res;
76
77 public:
78
79 // Main action members
80 bool GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
81 pkgRecords *Recs);
82
83 // Do the installation
84 OrderResult DoInstall(int statusFd=-1);
85
86 // stuff that needs to be done before the fork() of a library that
87 // uses apt
88 OrderResult DoInstallPreFork() {
89 Res = OrderInstall();
90 return Res;
91 };
92
93 // stuff that needs to be done after the fork
94 OrderResult DoInstallPostFork(int statusFd=-1);
95 bool FixMissing();
96
97 pkgPackageManager(pkgDepCache *Cache);
98 virtual ~pkgPackageManager();
99 };
100
101 #endif