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1// -*- mode: cpp; mode: fold -*-
2// Description /*{{{*/
0a843901 3// $Id: packagemanager.h,v 1.14 2001/05/07 04:24:08 jgg Exp $
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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
6fc33863 11 - Invokation of package manager
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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 /*}}}*/
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23#ifndef PKGLIB_PACKAGEMANAGER_H
24#define PKGLIB_PACKAGEMANAGER_H
25
26#ifdef __GNUG__
094a497d 27#pragma interface "apt-pkg/packagemanager.h"
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28#endif
29
30#include <string>
094a497d 31#include <apt-pkg/pkgcache.h>
3c9b111f 32#include <apt-pkg/depcache.h>
6c139d6e 33
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34using std::string;
35
03e39e59 36class pkgAcquire;
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37class pkgDepCache;
38class pkgSourceList;
39class pkgOrderList;
03e39e59 40class pkgRecords;
b2e465d6 41class pkgPackageManager : protected pkgCache::Namespace
6c139d6e 42{
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43 public:
44
45 enum OrderResult {Completed,Failed,Incomplete};
46
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47 protected:
48 string *FileNames;
49 pkgDepCache &Cache;
50 pkgOrderList *List;
30e1eab5 51 bool Debug;
b2e465d6 52
6c139d6e 53 bool DepAdd(pkgOrderList &Order,PkgIterator P,int Depth = 0);
756458fb 54 virtual OrderResult OrderInstall();
6c139d6e 55 bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
7a1b1f8b 56 bool CreateOrderList();
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57
58 // Analysis helpers
59 bool DepAlwaysTrue(DepIterator D);
60
61 // Install helpers
62 bool ConfigureAll();
63 bool SmartConfigure(PkgIterator Pkg);
64 bool SmartUnPack(PkgIterator Pkg);
65 bool SmartRemove(PkgIterator Pkg);
66 bool EarlyRemove(PkgIterator Pkg);
67
b2e465d6 68 // The Actual installation implementation
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69 virtual bool Install(PkgIterator /*Pkg*/,string /*File*/) {return false;};
70 virtual bool Configure(PkgIterator /*Pkg*/) {return false;};
71 virtual bool Remove(PkgIterator /*Pkg*/,bool /*Purge*/=false) {return false;};
007dc9e0 72 virtual bool Go(int statusFd=-1) {return true;};
281daf46 73 virtual void Reset() {};
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74
75 // the result of the operation
76 OrderResult Res;
77
6c139d6e 78 public:
281daf46 79
b50b2c97 80 // Main action members
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81 bool GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
82 pkgRecords *Recs);
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83
84 // Do the installation
85 OrderResult DoInstall() {
86 if(DoInstallPreFork() == Failed)
87 return Failed;
88
89 return DoInstallPostFork();
90 }
91
92 // stuff that needs to be done before the fork() of a library that
93 // uses apt
94 OrderResult DoInstallPreFork() {
95 Res = OrderInstall();
96 return Res;
97 };
98
99 // stuff that needs to be done after the fork
100 OrderResult DoInstallPostFork(int statusFd=-1) {
101 bool goResult = Go(statusFd);
102 if(goResult == false)
103 return Failed;
104
105 // if all was fine update the state file
106 if(Res == Completed)
107 Cache.writeStateFile(NULL);
108
109 return Res;
110 };
111
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112 bool FixMissing();
113
b2e465d6 114 pkgPackageManager(pkgDepCache *Cache);
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115 virtual ~pkgPackageManager();
116};
117
118#endif