X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/cdcc6d34b0256aa5efe159351bb24b2e28ed143b..2b154e536a0df3afb318ddcf9b7daf9337de3c23:/cmdline/apt-cache.cc diff --git a/cmdline/apt-cache.cc b/cmdline/apt-cache.cc index 8f6a40e27..8a3a63695 100644 --- a/cmdline/apt-cache.cc +++ b/cmdline/apt-cache.cc @@ -1,6 +1,6 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: apt-cache.cc,v 1.22 1999/01/27 02:48:53 jgg Exp $ +// $Id: apt-cache.cc,v 1.28 1999/02/19 08:57:41 jgg Exp $ /* ###################################################################### apt-cache - Manages the cache files @@ -23,9 +23,13 @@ #include #include #include +#include +#include #include -#include +#include +#include +#include /*}}}*/ pkgCache *GCache = 0; @@ -327,6 +331,26 @@ bool Dump(CommandLine &Cmd) return true; } /*}}}*/ +// GetCandidateVer - Returns the Candidate install version /*{{{*/ +// --------------------------------------------------------------------- +/* This should really use the DepCache or something.. Copied from there. */ +static pkgCache::VerIterator GetCandidateVer(pkgCache::PkgIterator Pkg) +{ + /* Not source/not automatic versions cannot be a candidate version + unless they are already installed */ + for (pkgCache::VerIterator I = Pkg.VersionList(); I.end() == false; I++) + { + if (Pkg.CurrentVer() == I) + return I; + for (pkgCache::VerFileIterator J = I.FileList(); J.end() == false; J++) + if ((J.File()->Flags & pkgCache::Flag::NotSource) == 0 && + (J.File()->Flags & pkgCache::Flag::NotAutomatic) == 0) + return I; + } + + return pkgCache::VerIterator(*GCache,0); +} + /*}}}*/ // DumpAvail - Print out the available list /*{{{*/ // --------------------------------------------------------------------- /* This is needed to make dpkg --merge happy */ @@ -357,22 +381,20 @@ bool DumpAvail(CommandLine &Cmd) structure to find them */ for (pkgCache::PkgIterator P = Cache.PkgBegin(); P.end() == false; P++) { - for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; V++) + // Find the proper version to use. We should probably use the DepCache. + pkgCache::VerIterator V = GetCandidateVer(P); + + if (V.end() == true || V.FileList().File() != I) + continue; + + // Read the record and then write it out again. + if (PkgF.Seek(V.FileList()->Offset) == false || + PkgF.Read(Buffer,V.FileList()->Size) == false || + write(STDOUT_FILENO,Buffer,V.FileList()->Size) != V.FileList()->Size) { - if (V->FileList == 0) - continue; - if (V.FileList().File() != I) - continue; - - // Read the record and then write it out again. - if (PkgF.Seek(V.FileList()->Offset) == false || - PkgF.Read(Buffer,V.FileList()->Size) == false || - write(STDOUT_FILENO,Buffer,V.FileList()->Size) != V.FileList()->Size) - { - delete [] Buffer; - return false; - } - } + delete [] Buffer; + return false; + } } } @@ -425,6 +447,119 @@ bool DoAdd(CommandLine &CmdL) GCache = &Gen.GetCache(); Stats(CmdL); + return true; +} + /*}}}*/ +// DisplayRecord - Displays the complete record for the package /*{{{*/ +// --------------------------------------------------------------------- +/* This displays the package record from the proper package index file. + It is not used by DumpAvail for performance reasons. */ +bool DisplayRecord(pkgCache::VerIterator V) +{ + // Find an appropriate file + pkgCache::VerFileIterator Vf = V.FileList(); + for (; Vf.end() == false; Vf++) + if ((Vf.File()->Flags & pkgCache::Flag::NotSource) == 0) + break; + if (Vf.end() == true) + Vf = V.FileList(); + + // Check and load the package list file + pkgCache::PkgFileIterator I = Vf.File(); + if (I.IsOk() == false) + return _error->Error("Package file %s is out of sync.",I.FileName()); + + FileFd PkgF(I.FileName(),FileFd::ReadOnly); + if (_error->PendingError() == true) + return false; + + // Read the record and then write it out again. + unsigned char *Buffer = new unsigned char[GCache->HeaderP->MaxVerFileSize]; + if (PkgF.Seek(V.FileList()->Offset) == false || + PkgF.Read(Buffer,V.FileList()->Size) == false || + write(STDOUT_FILENO,Buffer,V.FileList()->Size) != V.FileList()->Size) + { + delete [] Buffer; + return false; + } + + delete [] Buffer; + + return true; +} + /*}}}*/ +// Search - Perform a search /*{{{*/ +// --------------------------------------------------------------------- +/* This searches the package names and pacakge descriptions for a pattern */ +bool Search(CommandLine &CmdL) +{ + pkgCache &Cache = *GCache; + bool ShowFull = _config->FindB("APT::Cache::ShowFull",false); + bool NamesOnly = _config->FindB("APT::Cache::NamesOnly",false); + + // Make sure there is at least one argument + if (CmdL.FileSize() != 2) + return _error->Error("You must give exactly one pattern"); + + // Compile the regex pattern + regex_t Pattern; + if (regcomp(&Pattern,CmdL.FileList[1],REG_EXTENDED | REG_ICASE | + REG_NOSUB) != 0) + return _error->Error("Regex compilation error"); + + // Create the text record parser + pkgRecords Recs(Cache); + if (_error->PendingError() == true) + return false; + + // Search package names + pkgCache::PkgIterator I = Cache.PkgBegin(); + for (;I.end() != true; I++) + { + // We search against the install version as that makes the most sense.. + pkgCache::VerIterator V = GetCandidateVer(I); + if (V.end() == true) + continue; + + pkgRecords::Parser &P = Recs.Lookup(V.FileList()); + + if (regexec(&Pattern,I.Name(),0,0,0) == 0 || + (NamesOnly == false && + regexec(&Pattern,P.LongDesc().c_str(),0,0,0) == 0)) + { + if (ShowFull == true) + DisplayRecord(V); + else + cout << I.Name() << " - " << P.ShortDesc() << endl; + } + } + + regfree(&Pattern); + return true; +} + /*}}}*/ +// ShowPackage - Dump the package record to the screen /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool ShowPackage(CommandLine &CmdL) +{ + pkgCache &Cache = *GCache; + for (const char **I = CmdL.FileList + 1; *I != 0; I++) + { + pkgCache::PkgIterator Pkg = Cache.FindPkg(*I); + if (Pkg.end() == true) + { + _error->Warning("Unable to locate package %s",*I); + continue; + } + + // Find the proper version to use. We should probably use the DepCache. + pkgCache::VerIterator V = GetCandidateVer(Pkg); + if (V.end() == true || V.FileList().end() == true) + continue; + if (DisplayRecord(V) == false) + return false; + } return true; } /*}}}*/ @@ -447,6 +582,8 @@ bool ShowHelp(CommandLine &Cmd) { cout << PACKAGE << ' ' << VERSION << " for " << ARCHITECTURE << " compiled on " << __DATE__ << " " << __TIME__ << endl; + if (_config->FindB("version") == true) + return 100; cout << "Usage: apt-cache [options] command" << endl; cout << " apt-cache [options] add file1 [file1 ...]" << endl; @@ -465,6 +602,8 @@ bool ShowHelp(CommandLine &Cmd) cout << " dumpavail - Print an available file to stdout" << endl; cout << " unmet - Show unmet dependencies" << endl; cout << " check - Check the cache a bit" << endl; + cout << " search - Search the package list for a regex pattern" << endl; + cout << " show - Show a readable record for the package" << endl; cout << endl; cout << "Options:" << endl; cout << " -h This help text." << endl; @@ -492,10 +631,13 @@ int main(int argc,const char *argv[]) { CommandLine::Args Args[] = { {'h',"help","help",0}, + {'v',"version","version",0}, {'p',"pkg-cache","Dir::Cache::pkgcache",CommandLine::HasArg}, {'s',"src-cache","Dir::Cache::srcpkgcache",CommandLine::HasArg}, {'q',"quiet","quiet",CommandLine::IntLevel}, {'i',"important","APT::Cache::Important",0}, + {'f',"full","APT::Cache::ShowFull",0}, + {0,"names-only","APT::Cache::NamesOnly",0}, {'c',"config-file",0,CommandLine::ConfigFile}, {'o',"option",0,CommandLine::ArbItem}, {0,0,0,0}}; @@ -509,6 +651,8 @@ int main(int argc,const char *argv[]) {"dumpavail",&DumpAvail}, {"unmet",&UnMet}, {"check",&Check}, + {"search",&Search}, + {"show",&ShowPackage}, {0,0}}; CacheInitialize();