source/copy.cpp

   1 /* $Id$
   2
   3 This file is part of builder
   4 Copyright © 2006-2009  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <errno.h>
   9 #include <msp/fs/dir.h>
  10 #include <msp/fs/stat.h>
  11 #include <msp/fs/utils.h>
  12 #include <msp/io/file.h>
  13 #include <msp/io/print.h>
  14 #include "builder.h"
  15 #include "copy.h"
  16 #include "package.h"
  17
  18 using namespace std;
  19 using namespace Msp;
  20
  21 Copy::Copy(Builder &b, const Package &pkg, const FS::Path &s, const FS::Path &d):
  22         InternalAction(b),
  23         src(s),
  24         dest(d)
  25 {
  26         announce(pkg.get_name(), "COPY", dest[-1]);
  27         if(builder.get_verbose()>=2)
  28                 IO::print("%s -> %s\n", s, d);
  29
  30         if(!builder.get_dry_run())
  31                 worker=new Worker(*this);
  32 }
  33
  34
  35 Copy::Worker::Worker(Copy &c):
  36         copy(c)
  37 {
  38         launch();
  39 }
  40
  41 void Copy::Worker::main()
  42 {
  43         FS::mkpath(FS::dirname(copy.dest), 0755);
  44
  45         try
  46         {
  47                 // Remove old file.  Not doing this would cause Bad Stuff when installing libraries.
  48                 unlink(copy.dest);
  49         }
  50         catch(const SystemError &e)
  51         {
  52                 if(e.get_error_code()!=ENOENT)
  53                 {
  54                         IO::print(IO::cerr, "%s\n", e.what());
  55                         done=error=true;
  56                         return;
  57                 }
  58         }
  59
  60         try
  61         {
  62                 IO::File in(copy.src.str());
  63                 IO::File out(copy.dest.str(), IO::M_WRITE);
  64
  65                 // Actual transfer loop
  66                 char buf[16384];
  67                 while(!in.eof())
  68                 {
  69                         unsigned len=in.read(buf, sizeof(buf));
  70                         out.write(buf, len);
  71                 }
  72         }
  73         catch(const Exception &e)
  74         {
  75                 IO::print(IO::cerr, "%s\n", e.what());
  76                 done=error=true;
  77                 return;
  78         }
  79
  80         // Preserve file permissions
  81         struct stat st=FS::stat(copy.src);
  82         chmod(copy.dest.str().c_str(), st.st_mode&0777);
  83
  84         done=true;
  85 }