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 &global_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 prefix;
  23         FS::Path mid;
  24         if(!loc.compare(0, 2, "//"))
  25         {
  26                 if(!tgt.get_package())
  27                         throw invalid_argument("No private install location for "+tgt.get_name());
  28
  29                 prefix = tgt.get_package()->get_temp_directory();
  30                 mid = loc.substr(2);
  31         }
  32         else
  33         {
  34                 prefix = global_prefix;
  35
  36                 if(!loc.empty())
  37                         mid = loc;
  38                 else if(const Component *comp = tgt.get_component())
  39                         mid = comp->get_install_map().get_install_location(tgt);
  40         }
  41
  42         if(mid.empty())
  43                 mid = tgt.get_install_location();
  44
  45         string fn = tgt.get_install_filename();
  46         if(fn.empty())
  47                 fn = FS::basename(tgt.get_path());
  48
  49         return prefix/mid/fn;
  50 }
  51
  52 void InstalledFile::set_symlink(const FS::Path &l)
  53 {
  54         FS::Path al = FS::dirname(path)/l;
  55         if(al==path)
  56                 throw invalid_argument("InstalledFile::set_symlink");
  57         link = FS::dirname(path)/l;
  58         builder.get_vfs().register_path(link, this);
  59 }
  60
  61 Target *InstalledFile::get_real_target()
  62 {
  63         return source.get_real_target();
  64 }
  65
  66 void InstalledFile::check_rebuild()
  67 {
  68         if(!mtime)
  69                 mark_rebuild("Does not exist");
  70         else if(source.get_mtime()>mtime || source.get_size()!=size)
  71                 mark_rebuild(source.get_name()+" has changed");
  72         else if(source.needs_rebuild())
  73                 mark_rebuild(source.get_name()+" needs rebuilding");
  74         if(!needs_rebuild() && !link.empty())
  75         {
  76                 if(!FS::exists(link))
  77                         mark_rebuild("Symlink does not exist");
  78                 else
  79                 {
  80                         FS::Path rel_path = FS::relative(path, FS::dirname(link));
  81                         if(FS::readlink(link)!=rel_path)
  82                                 mark_rebuild("Symlink needs updating");
  83                 }
  84         }
  85 }
  86
  87 void InstalledFile::clean()
  88 {
  89         if(!link.empty() && mtime)
  90                 FS::unlink(link);
  91         FileTarget::clean();
  92 }