source/copy.cpp

   1 #ifndef _WIN32
   2 #include <unistd.h>
   3 #include <sys/stat.h>
   4 #endif
   5 #include <msp/fs/dir.h>
   6 #include <msp/fs/stat.h>
   7 #include <msp/fs/utils.h>
   8 #include <msp/io/file.h>
   9 #include <msp/io/print.h>
  10 #include "builder.h"
  11 #include "copy.h"
  12 #include "installedfile.h"
  13
  14 using namespace std;
  15 using namespace Msp;
  16
  17 Target *Copy::create_target(const vector<Target *> &sources, const string &arg)
  18 {
  19         FileTarget &file_tgt = dynamic_cast<FileTarget &>(*sources.front());
  20         InstalledFile *inst = new InstalledFile(builder, *file_tgt.get_package(), file_tgt, arg);
  21         inst->set_tool(*this);
  22         return inst;
  23 }
  24
  25 Task *Copy::run(const Target &target) const
  26 {
  27         const InstalledFile &install = dynamic_cast<const InstalledFile &>(target);
  28         Worker *worker = new Worker(install);
  29         InternalTask *task = new InternalTask(worker);
  30         task->add_file(install.get_path());
  31         task->set_unlink();
  32         return task;
  33 }
  34
  35
  36 void Copy::Worker::main()
  37 {
  38         const FileTarget &source = target.get_source();
  39         const FS::Path &src_path = source.get_path();
  40         const FS::Path &dst_path = target.get_path();
  41
  42         try
  43         {
  44                 IO::File in(src_path.str());
  45                 IO::File out(dst_path.str(), IO::M_WRITE);
  46
  47                 // Actual transfer loop
  48                 char buf[16384];
  49                 while(!in.eof())
  50                 {
  51                         unsigned len = in.read(buf, sizeof(buf));
  52                         out.write(buf, len);
  53                 }
  54         }
  55         catch(const exception &e)
  56         {
  57                 IO::print(IO::cerr, "%s\n", e.what());
  58                 status = Task::ERROR;
  59                 return;
  60         }
  61
  62 #ifndef _WIN32
  63         // Preserve file permissions
  64         struct stat st;
  65         if(stat(src_path.str().c_str(), &st)==0)
  66                 chmod(dst_path.str().c_str(), st.st_mode&0777);
  67
  68         const FS::Path &link = target.get_symlink();
  69         if(!link.empty())
  70         {
  71                 FS::Path relpath = FS::relative(dst_path, FS::dirname(link));
  72                 if(FS::exists(link))
  73                         FS::unlink(link);
  74                 symlink(relpath.str().c_str(), link.str().c_str());
  75         }
  76 #endif
  77
  78         status = Task::SUCCESS;
  79 }