methods/copy.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: copy.cc,v 1.4 1998/10/30 07:53:51 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(string Message,URI Get);
  24
  25    public:
  26
  27    CopyMethod() : pkgAcqMethod("1.0",SingleInstance) {};
  28 };
  29
  30 // CopyMethod::Fetch - Fetch a file                                     /*{{{*/
  31 // ---------------------------------------------------------------------
  32 /* */
  33 bool CopyMethod::Fetch(string Message,URI Get)
  34 {
  35    string File = Get.Path;
  36
  37    // See if the file exists
  38    FileFd From(File,FileFd::ReadOnly);
  39    FileFd To(DestFile,FileFd::WriteEmpty);
  40    To.EraseOnFailure();
  41    if (_error->PendingError() == true)
  42       return false;
  43
  44    // Copy the file
  45    if (CopyFile(From,To) == false)
  46       return false;
  47
  48    From.Close();
  49    To.Close();
  50
  51    // Transfer the modification times
  52    struct stat Buf;
  53    if (stat(File.c_str(),&Buf) != 0)
  54    {
  55       To.OpFail();
  56       return _error->Errno("stat","Failed to stat");
  57    }
  58
  59    struct utimbuf TimeBuf;
  60    TimeBuf.actime = Buf.st_atime;
  61    TimeBuf.modtime = Buf.st_mtime;
  62    if (utime(DestFile.c_str(),&TimeBuf) != 0)
  63    {
  64       To.OpFail();
  65       return _error->Errno("utime","Failed to set modification time");
  66    }
  67
  68    // Forumulate a result
  69    FetchResult Res;
  70    Res.Size = Buf.st_size;
  71    Res.Filename = DestFile;
  72    Res.LastModified = Buf.st_mtime;
  73    Res.IMSHit = false;
  74
  75    URIDone(Res);
  76    return true;
  77 }
  78                                                                         /*}}}*/
  79
  80 int main()
  81 {
  82    CopyMethod Mth;
  83    return Mth.Run();
  84 }