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-rw-r--r--apt-pkg/clean.cc111
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diff --git a/apt-pkg/clean.cc b/apt-pkg/clean.cc
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+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+// $Id: clean.cc,v 1.1 1999/02/01 08:11:57 jgg Exp $
+/* ######################################################################
+
+ Clean - Clean out downloaded directories
+
+ ##################################################################### */
+ /*}}}*/
+// Includes /*{{{*/
+#ifdef __GNUG__
+#pragma implementation "apt-pkg/clean.h"
+#endif
+
+#include <apt-pkg/clean.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/error.h>
+
+#include <dirent.h>
+#include <sys/stat.h>
+#include <unistd.h>
+ /*}}}*/
+
+// ArchiveCleaner::Go - Perform smart cleanup of the archive /*{{{*/
+// ---------------------------------------------------------------------
+/* Scan the directory for files to erase, we check the version information
+ against our database to see if it is interesting */
+bool pkgArchiveCleaner::Go(string Dir,pkgCache &Cache)
+{
+ DIR *D = opendir(Dir.c_str());
+ if (D == 0)
+ return _error->Errno("opendir","Unable to read %s",Dir.c_str());
+
+ string StartDir = SafeGetCWD();
+ if (chdir(Dir.c_str()) != 0)
+ {
+ closedir(D);
+ return _error->Errno("chdir","Unable to change to ",Dir.c_str());
+ }
+
+ for (struct dirent *Dir = readdir(D); Dir != 0; Dir = readdir(D))
+ {
+ // Skip some files..
+ if (strcmp(Dir->d_name,"lock") == 0 ||
+ strcmp(Dir->d_name,"partial") == 0 ||
+ strcmp(Dir->d_name,".") == 0 ||
+ strcmp(Dir->d_name,"..") == 0)
+ continue;
+
+ struct stat St;
+ if (stat(Dir->d_name,&St) != 0)
+ return _error->Errno("stat","Unable to stat %s.",Dir->d_name);
+
+ // Grab the package name
+ const char *I = Dir->d_name;
+ for (; *I != 0 && *I != '_';I++);
+ if (*I != '_')
+ continue;
+ string Pkg = DeQuoteString(string(Dir->d_name,I-Dir->d_name));
+
+ // Grab the version
+ const char *Start = I + 1;
+ for (I = Start; *I != 0 && *I != '_';I++);
+ if (*I != '_')
+ continue;
+ string Ver = DeQuoteString(string(Start,I-Start));
+
+ // Grab the arch
+ Start = I + 1;
+ for (I = Start; *I != 0 && *I != '.' ;I++);
+ if (*I != '.')
+ continue;
+ string Arch = DeQuoteString(string(Start,I-Start));
+
+ // Lookup the package
+ pkgCache::PkgIterator P = Cache.FindPkg(Pkg);
+ if (P.end() != true)
+ {
+ pkgCache::VerIterator V = P.VersionList();
+ for (; V.end() == false; V++)
+ {
+ // See if we can fetch this version at all
+ bool IsFetchable = false;
+ for (pkgCache::VerFileIterator J = V.FileList();
+ J.end() == false; J++)
+ {
+ if ((J.File()->Flags & pkgCache::Flag::NotSource) != 0)
+ continue;
+ IsFetchable = true;
+ break;
+ }
+
+ // See if this verison matches the file
+ if (IsFetchable == true && Ver == V.VerStr())
+ break;
+ }
+
+ // We found a match, keep the file
+ if (V.end() == false)
+ continue;
+ }
+
+ Erase(Dir->d_name,Pkg,Ver,St);
+ unlink(Dir->d_name);
+ };
+
+ chdir(StartDir.c_str());
+ closedir(D);
+ return true;
+}
+ /*}}}*/