diff options
Diffstat (limited to 'apt-pkg/clean.cc')
| -rw-r--r-- | apt-pkg/clean.cc | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/apt-pkg/clean.cc b/apt-pkg/clean.cc new file mode 100644 index 000000000..fe57c26a2 --- /dev/null +++ b/apt-pkg/clean.cc @@ -0,0 +1,142 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +// $Id: clean.cc,v 1.4 2001/02/20 07:03:17 jgg Exp $ +/* ###################################################################### + + Clean - Clean out downloaded directories + + ##################################################################### */ + /*}}}*/ +// Includes /*{{{*/ +#include<config.h> + +#include <apt-pkg/clean.h> +#include <apt-pkg/strutl.h> +#include <apt-pkg/error.h> +#include <apt-pkg/configuration.h> +#include <apt-pkg/aptconfiguration.h> +#include <apt-pkg/fileutl.h> +#include <apt-pkg/pkgcache.h> +#include <apt-pkg/cacheiterators.h> + +#include <string> +#include <string.h> +#include <dirent.h> +#include <sys/stat.h> +#include <unistd.h> + +#include <apti18n.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(std::string Dir,pkgCache &Cache) +{ + bool CleanInstalled = _config->FindB("APT::Clean-Installed",true); + + if(Dir == "/") + return _error->Error(_("Clean of %s is not supported"), Dir.c_str()); + + // non-existing directories are always clean + // we do not check for a directory explicitly to support symlinks + if (FileExists(Dir) == false) + return true; + + DIR *D = opendir(Dir.c_str()); + if (D == 0) + return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str()); + + std::string StartDir = SafeGetCWD(); + if (chdir(Dir.c_str()) != 0) + { + closedir(D); + return _error->Errno("chdir",_("Unable to change to %s"),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,"lost+found") == 0 || + strcmp(Dir->d_name,".") == 0 || + strcmp(Dir->d_name,"..") == 0) + continue; + + struct stat St; + if (stat(Dir->d_name,&St) != 0) + { + _error->Errno("stat",_("Unable to stat %s."),Dir->d_name); + closedir(D); + if (chdir(StartDir.c_str()) != 0) + return _error->Errno("chdir", _("Unable to change to %s"), StartDir.c_str()); + return false; + } + + // Grab the package name + const char *I = Dir->d_name; + for (; *I != 0 && *I != '_';I++); + if (*I != '_') + continue; + std::string Pkg = DeQuoteString(std::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; + std::string Ver = DeQuoteString(std::string(Start,I-Start)); + + // Grab the arch + Start = I + 1; + for (I = Start; *I != 0 && *I != '.' ;I++); + if (*I != '.') + continue; + std::string const Arch = DeQuoteString(std::string(Start,I-Start)); + + // ignore packages of unconfigured architectures + if (APT::Configuration::checkArchitecture(Arch) == false) + continue; + + // Lookup the package + pkgCache::PkgIterator P = Cache.FindPkg(Pkg, Arch); + 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 (CleanInstalled == true && + J.File().Flagged(pkgCache::Flag::NotSource)) + continue; + IsFetchable = true; + break; + } + + // See if this version 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); + }; + + closedir(D); + if (chdir(StartDir.c_str()) != 0) + return _error->Errno("chdir", _("Unable to change to %s"), StartDir.c_str()); + return true; +} + /*}}}*/ + +pkgArchiveCleaner::pkgArchiveCleaner() : d(NULL) {} +APT_CONST pkgArchiveCleaner::~pkgArchiveCleaner() {} |