source/copy.cpp

   1 #include <errno.h>
   2 #include <fstream>
   3 #include <msp/path/utils.h>
   4 #include "builder.h"
   5 #include "copy.h"
   6 #include "package.h"
   7
   8 using namespace std;
   9 using namespace Msp;
  10
  11 Copy::Copy(Builder &b, const Package &pkg, const Path::Path &s, const Path::Path &d):
  12         Action(b),
  13         src(s),
  14         dest(d),
  15         worker(*this)
  16 {
  17         announce(pkg.get_name(), "INST", dest[-1]);
  18         if(builder.get_verbose()>=2)
  19                 cout<<s<<" -> "<<d<<'\n';
  20 }
  21
  22 int Copy::check()
  23 {
  24         if(worker.get_done())
  25         {
  26                 signal_done.emit();
  27                 worker.join();
  28                 return worker.get_error()?1:0;
  29         }
  30         return -1;
  31 }
  32
  33 void Copy::Worker::main()
  34 {
  35         Path::mkpath(copy.dest.subpath(0, copy.dest.size()-1), 0755);
  36
  37         if(unlink(copy.dest.str().c_str())<0 && errno!=ENOENT)
  38         {
  39                 int err=errno;
  40                 cerr<<"Can't unlink "<<copy.dest<<": "<<strerror(err)<<'\n';
  41                 done=error=true;
  42                 return;
  43         }
  44
  45         ifstream in(copy.src.str().c_str());
  46         if(!in)
  47         {
  48                 cerr<<"Can't open "<<copy.src<<" for reading\n";
  49                 done=error=true;
  50                 return;
  51         }
  52
  53         ofstream out(copy.dest.str().c_str());
  54         if(!out)
  55         {
  56                 cerr<<"Can't open "<<copy.dest<<" for writing\n";
  57                 done=error=true;
  58                 return;
  59         }
  60
  61         char buf[16384];
  62         while(!in.eof())
  63         {
  64                 in.read(buf, sizeof(buf));
  65                 out.write(buf, in.gcount());
  66         }
  67
  68         struct stat st;
  69         Path::stat(copy.src, st);
  70         chmod(copy.dest.str().c_str(), st.st_mode&0777);
  71
  72         done=true;
  73 }