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Diffstat (limited to 'cmdline/apt-sortpkgs.cc')
| -rw-r--r-- | cmdline/apt-sortpkgs.cc | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/cmdline/apt-sortpkgs.cc b/cmdline/apt-sortpkgs.cc new file mode 100644 index 000000000..bacaf01dd --- /dev/null +++ b/cmdline/apt-sortpkgs.cc @@ -0,0 +1,201 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +// $Id: apt-sortpkgs.cc,v 1.2 2001/02/20 07:03:17 jgg Exp $ +/* ###################################################################### + + APT Sort Packages - Program to sort Package and Source files + + This program is quite simple, it just sorts the package files by + package and sorts the fields inside by the internal APT sort order. + Input is taken from a named file and sent to stdout. + + ##################################################################### */ + /*}}}*/ +// Include Files /*{{{*/ +#include <apt-pkg/tagfile.h> +#include <apt-pkg/error.h> +#include <apt-pkg/configuration.h> +#include <apt-pkg/cmndline.h> +#include <apt-pkg/init.h> +#include <apt-pkg/strutl.h> + +#include <config.h> +#include <apti18n.h> + +#include <vector> +#include <algorithm> + +#include <unistd.h> + /*}}}*/ + +struct PkgName +{ + string Name; + string Ver; + string Arch; + unsigned long Offset; + unsigned long Length; + + inline int Compare3(const PkgName &x) const + { + int A = stringcasecmp(Name,x.Name); + if (A == 0) + { + A = stringcasecmp(Ver,x.Ver); + if (A == 0) + A = stringcasecmp(Arch,x.Arch); + } + return A; + } + + bool operator <(const PkgName &x) const {return Compare3(x) < 0;}; + bool operator >(const PkgName &x) const {return Compare3(x) > 0;}; + bool operator ==(const PkgName &x) const {return Compare3(x) == 0;}; +}; + +// DoIt - Sort a single file /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool DoIt(string InFile) +{ + FileFd Fd(InFile,FileFd::ReadOnly); + pkgTagFile Tags(&Fd); + if (_error->PendingError() == true) + return false; + + // Parse. + vector<PkgName> List; + pkgTagSection Section; + unsigned long Largest = 0; + unsigned long Offset = Tags.Offset(); + bool Source = _config->FindB("APT::SortPkgs::Source",false); + while (Tags.Step(Section) == true) + { + PkgName Tmp; + + /* Fetch the name, auto-detecting if this is a source file or a + package file */ + Tmp.Name = Section.FindS("Package"); + Tmp.Ver = Section.FindS("Version"); + Tmp.Arch = Section.FindS("Architecture"); + + if (Tmp.Name.empty() == true) + return _error->Error(_("Unknown package record!")); + + Tmp.Offset = Offset; + Tmp.Length = Section.size(); + if (Largest < Tmp.Length) + Largest = Tmp.Length; + + List.push_back(Tmp); + + Offset = Tags.Offset(); + } + if (_error->PendingError() == true) + return false; + + // Sort it + sort(List.begin(),List.end()); + + const char **Order = TFRewritePackageOrder; + if (Source == true) + Order = TFRewriteSourceOrder; + + // Emit + unsigned char *Buffer = new unsigned char[Largest+1]; + for (vector<PkgName>::iterator I = List.begin(); I != List.end(); I++) + { + // Read in the Record. + if (Fd.Seek(I->Offset) == false || Fd.Read(Buffer,I->Length) == false) + { + delete [] Buffer; + return false; + } + + Buffer[I->Length] = '\n'; + if (Section.Scan((char *)Buffer,I->Length+1) == false) + { + delete [] Buffer; + return _error->Error("Internal error, failed to scan buffer"); + } + + // Sort the section + if (TFRewrite(stdout,Section,Order,0) == false) + { + delete [] Buffer; + return _error->Error("Internal error, failed to sort fields"); + } + + fputc('\n',stdout); + } + + delete [] Buffer; + return true; +} + /*}}}*/ +// ShowHelp - Show the help text /*{{{*/ +// --------------------------------------------------------------------- +/* */ +int ShowHelp() +{ + ioprintf(cout,_("%s %s for %s %s compiled on %s %s\n"),PACKAGE,VERSION, + COMMON_OS,COMMON_CPU,__DATE__,__TIME__); + if (_config->FindB("version") == true) + return 0; + + cout << + _("Usage: apt-sortpkgs [options] file1 [file2 ...]\n" + "\n" + "apt-sortpkgs is a simple tool to sort package files. The -s option is used\n" + "to indicate what kind of file it is.\n" + "\n" + "Options:\n" + " -h This help text\n" + " -s Use source file sorting\n" + " -c=? Read this configuration file\n" + " -o=? Set an arbitary configuration option, eg -o dir::cache=/tmp\n"); + + return 0; +} + /*}}}*/ + +int main(unsigned int argc,const char *argv[]) +{ + CommandLine::Args Args[] = { + {'h',"help","help",0}, + {'v',"version","version",0}, + {'s',"source","APT::SortPkgs::Source",0}, + {'c',"config-file",0,CommandLine::ConfigFile}, + {'o',"option",0,CommandLine::ArbItem}, + {0,0,0,0}}; + + // Parse the command line and initialize the package library + CommandLine CmdL(Args,_config); + if (pkgInitConfig(*_config) == false || + CmdL.Parse(argc,argv) == false || + pkgInitSystem(*_config,_system) == false) + { + _error->DumpErrors(); + return 100; + } + + // See if the help should be shown + if (_config->FindB("help") == true || + CmdL.FileSize() == 0) + return ShowHelp(); + + // Match the operation + for (unsigned int I = 0; I != CmdL.FileSize(); I++) + if (DoIt(CmdL.FileList[I]) == false) + break; + + // Print any errors or warnings found during parsing + if (_error->empty() == false) + { + bool Errors = _error->PendingError(); + _error->DumpErrors(); + return Errors == true?100:0; + } + + return 0; +} |