methods/copy.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: copy.cc,v 1.5 1998/11/01 05:27:40 jgg Exp $
   4 /* ######################################################################
   5
   6    Copy URI - This method takes a uri like a file: uri and copies it
   7    to the destination file.
   8
   9    ##################################################################### */
  10                                                                         /*}}}*/
  11 // Include Files                                                        /*{{{*/
  12 #include <apt-pkg/fileutl.h>
  13 #include <apt-pkg/acquire-method.h>
  14 #include <apt-pkg/error.h>
  15
  16 #include <sys/stat.h>
  17 #include <utime.h>
  18 #include <unistd.h>
  19                                                                         /*}}}*/
  20
  21 class CopyMethod : public pkgAcqMethod
  22 {
  23    virtual bool Fetch(FetchItem *Itm);
  24
  25    public:
  26
  27    CopyMethod() : pkgAcqMethod("1.0",SingleInstance) {};
  28 };
  29
  30 // CopyMethod::Fetch - Fetch a file                                     /*{{{*/
  31 // ---------------------------------------------------------------------
  32 /* */
  33 bool CopyMethod::Fetch(FetchItem *Itm)
  34 {
  35    URI Get = Itm->Uri;
  36    string File = Get.Path;
  37
  38    // See if the file exists
  39    FileFd From(File,FileFd::ReadOnly);
  40    FileFd To(Itm->DestFile,FileFd::WriteEmpty);
  41    To.EraseOnFailure();
  42    if (_error->PendingError() == true)
  43       return false;
  44
  45    // Copy the file
  46    if (CopyFile(From,To) == false)
  47       return false;
  48
  49    From.Close();
  50    To.Close();
  51
  52    // Transfer the modification times
  53    struct stat Buf;
  54    if (stat(File.c_str(),&Buf) != 0)
  55    {
  56       To.OpFail();
  57       return _error->Errno("stat","Failed to stat");
  58    }
  59
  60    struct utimbuf TimeBuf;
  61    TimeBuf.actime = Buf.st_atime;
  62    TimeBuf.modtime = Buf.st_mtime;
  63    if (utime(Itm->DestFile.c_str(),&TimeBuf) != 0)
  64    {
  65       To.OpFail();
  66       return _error->Errno("utime","Failed to set modification time");
  67    }
  68
  69    // Forumulate a result
  70    FetchResult Res;
  71    Res.Size = Buf.st_size;
  72    Res.Filename = Itm->DestFile;
  73    Res.LastModified = Buf.st_mtime;
  74    Res.IMSHit = false;
  75
  76    URIDone(Res);
  77    return true;
  78 }
  79                                                                         /*}}}*/
  80
  81 int main()
  82 {
  83    CopyMethod Mth;
  84    return Mth.Run();
  85 }