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         /* XXX Ideally, the tool should handle this (symlinks are not necessary for
  17         windows dlls).  However, the tool that created the target being installed
  18         knows nothing about the InstalledFile. */
  19         string base_fn = FS::basename(source.get_path());
  20         const string &inst_fn = source.get_install_filename();
  21         if(!inst_fn.empty() && inst_fn!=base_fn)
  22         {
  23                 link = FS::dirname(path)/base_fn;
  24                 builder.get_vfs().register_path(link, this);
  25         }
  26 }
  27
  28 FS::Path InstalledFile::generate_target_path(const FS::Path &prefix, const FileTarget &tgt, const string &loc)
  29 {
  30         if(!tgt.is_installable() && loc.empty())
  31                 throw invalid_argument(tgt.get_name()+" is not installable");
  32
  33         FS::Path mid;
  34         if(!loc.empty())
  35                 mid = loc;
  36         else if(const Component *comp = tgt.get_component())
  37                 mid = comp->get_install_map().get_install_location(tgt);
  38         else
  39                 mid = tgt.get_install_location();
  40
  41         string fn = tgt.get_install_filename();
  42         if(fn.empty())
  43                 fn = FS::basename(tgt.get_path());
  44
  45         return prefix/mid/fn;
  46 }
  47
  48 Target *InstalledFile::get_real_target()
  49 {
  50         return source.get_real_target();
  51 }
  52
  53 void InstalledFile::check_rebuild()
  54 {
  55         if(!mtime)
  56                 mark_rebuild("Does not exist");
  57         else if(source.get_mtime()>mtime || source.get_size()!=size)
  58                 mark_rebuild(source.get_name()+" has changed");
  59         else if(source.needs_rebuild())
  60                 mark_rebuild(source.get_name()+" needs rebuilding");
  61         if(!needs_rebuild() && !link.empty())
  62         {
  63                 if(!FS::exists(link))
  64                         mark_rebuild("Symlink does not exist");
  65                 else
  66                 {
  67                         FS::Path rel_path = FS::relative(path, FS::dirname(link));
  68                         if(FS::readlink(link)!=rel_path)
  69                                 mark_rebuild("Symlink needs updating");
  70                 }
  71         }
  72 }
  73
  74 void InstalledFile::clean()
  75 {
  76         if(!link.empty() && mtime)
  77                 FS::unlink(link);
  78         FileTarget::clean();
  79 }