* merged from main
[apt.git] / apt-pkg / clean.cc
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1// -*- mode: cpp; mode: fold -*-
2// Description /*{{{*/
b2e465d6 3// $Id: clean.cc,v 1.4 2001/02/20 07:03:17 jgg Exp $
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4/* ######################################################################
5
6 Clean - Clean out downloaded directories
7
8 ##################################################################### */
9 /*}}}*/
10// Includes /*{{{*/
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11#include <apt-pkg/clean.h>
12#include <apt-pkg/strutl.h>
13#include <apt-pkg/error.h>
c98b1307 14#include <apt-pkg/configuration.h>
1bc849af 15
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16#include <apti18n.h>
17
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18#include <dirent.h>
19#include <sys/stat.h>
20#include <unistd.h>
21 /*}}}*/
22
23// ArchiveCleaner::Go - Perform smart cleanup of the archive /*{{{*/
24// ---------------------------------------------------------------------
25/* Scan the directory for files to erase, we check the version information
26 against our database to see if it is interesting */
27bool pkgArchiveCleaner::Go(string Dir,pkgCache &Cache)
28{
c98b1307 29 bool CleanInstalled = _config->FindB("APT::Clean-Installed",true);
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30 string MyArch = _config->Find("APT::Architecture");
31
32 DIR *D = opendir(Dir.c_str());
1bc849af 33 if (D == 0)
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34 return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str());
35
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36 string StartDir = SafeGetCWD();
37 if (chdir(Dir.c_str()) != 0)
38 {
39 closedir(D);
b2e465d6 40 return _error->Errno("chdir",_("Unable to change to %s"),Dir.c_str());
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41 }
42
43 for (struct dirent *Dir = readdir(D); Dir != 0; Dir = readdir(D))
44 {
45 // Skip some files..
46 if (strcmp(Dir->d_name,"lock") == 0 ||
47 strcmp(Dir->d_name,"partial") == 0 ||
48 strcmp(Dir->d_name,".") == 0 ||
49 strcmp(Dir->d_name,"..") == 0)
50 continue;
51
52 struct stat St;
53 if (stat(Dir->d_name,&St) != 0)
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54 {
55 chdir(StartDir.c_str());
56 closedir(D);
57 return _error->Errno("stat",_("Unable to stat %s."),Dir->d_name);
58 }
59
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60 // Grab the package name
61 const char *I = Dir->d_name;
62 for (; *I != 0 && *I != '_';I++);
63 if (*I != '_')
64 continue;
65 string Pkg = DeQuoteString(string(Dir->d_name,I-Dir->d_name));
66
67 // Grab the version
68 const char *Start = I + 1;
69 for (I = Start; *I != 0 && *I != '_';I++);
70 if (*I != '_')
71 continue;
72 string Ver = DeQuoteString(string(Start,I-Start));
73
74 // Grab the arch
75 Start = I + 1;
76 for (I = Start; *I != 0 && *I != '.' ;I++);
77 if (*I != '.')
78 continue;
79 string Arch = DeQuoteString(string(Start,I-Start));
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80
81 if (Arch != "all" && Arch != MyArch)
82 continue;
83
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84 // Lookup the package
85 pkgCache::PkgIterator P = Cache.FindPkg(Pkg);
86 if (P.end() != true)
87 {
88 pkgCache::VerIterator V = P.VersionList();
89 for (; V.end() == false; V++)
90 {
91 // See if we can fetch this version at all
92 bool IsFetchable = false;
93 for (pkgCache::VerFileIterator J = V.FileList();
94 J.end() == false; J++)
95 {
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96 if (CleanInstalled == true &&
97 (J.File()->Flags & pkgCache::Flag::NotSource) != 0)
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98 continue;
99 IsFetchable = true;
100 break;
101 }
102
103 // See if this verison matches the file
104 if (IsFetchable == true && Ver == V.VerStr())
105 break;
106 }
107
108 // We found a match, keep the file
109 if (V.end() == false)
110 continue;
111 }
112
113 Erase(Dir->d_name,Pkg,Ver,St);
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114 };
115
116 chdir(StartDir.c_str());
117 closedir(D);
118 return true;
119}
120 /*}}}*/