source/installedfile.cpp

   1 #include <msp/fs/stat.h>
   2 #include <msp/fs/utils.h>
   3 #include "builder.h"
   4 #include "installedfile.h"
   5 #include "sharedlibrary.h"
   6
   7 using namespace std;
   8 using namespace Msp;
   9
  10 InstalledFile::InstalledFile(Builder &b, const SourcePackage &p, FileTarget &s, const string &loc):
  11         FileTarget(b, p, generate_target_path(b.get_prefix(), s, loc)),
  12         source(s)
  13 {
  14         add_dependency(source);
  15 }
  16
  17 FS::Path InstalledFile::generate_target_path(const FS::Path &prefix, const FileTarget &tgt, const string &loc)
  18 {
  19         if(!tgt.is_installable() && loc.empty())
  20                 throw invalid_argument(tgt.get_name()+" is not installable");
  21
  22         FS::Path mid;
  23         if(!loc.empty())
  24                 mid = loc;
  25         else if(const Component *comp = tgt.get_component())
  26                 mid = comp->get_install_map().get_install_location(tgt);
  27         else
  28                 mid = tgt.get_install_location();
  29
  30         string fn = tgt.get_install_filename();
  31         if(fn.empty())
  32                 fn = FS::basename(tgt.get_path());
  33
  34         return prefix/mid/fn;
  35 }
  36
  37 void InstalledFile::set_symlink(const FS::Path &l)
  38 {
  39         FS::Path al = FS::dirname(path)/l;
  40         if(al==path)
  41                 throw invalid_argument("InstalledFile::set_symlink");
  42         link = FS::dirname(path)/l;
  43         builder.get_vfs().register_path(link, this);
  44 }
  45
  46 Target *InstalledFile::get_real_target()
  47 {
  48         return source.get_real_target();
  49 }
  50
  51 void InstalledFile::check_rebuild()
  52 {
  53         if(!mtime)
  54                 mark_rebuild("Does not exist");
  55         else if(source.get_mtime()>mtime || source.get_size()!=size)
  56                 mark_rebuild(source.get_name()+" has changed");
  57         else if(source.needs_rebuild())
  58                 mark_rebuild(source.get_name()+" needs rebuilding");
  59         if(!needs_rebuild() && !link.empty())
  60         {
  61                 if(!FS::exists(link))
  62                         mark_rebuild("Symlink does not exist");
  63                 else
  64                 {
  65                         FS::Path rel_path = FS::relative(path, FS::dirname(link));
  66                         if(FS::readlink(link)!=rel_path)
  67                                 mark_rebuild("Symlink needs updating");
  68                 }
  69         }
  70 }
  71
  72 void InstalledFile::clean()
  73 {
  74         if(!link.empty() && mtime)
  75                 FS::unlink(link);
  76         FileTarget::clean();
  77 }