source/filetarget.cpp

   1 #include <msp/fs/stat.h>
   2 #include <msp/fs/utils.h>
   3 #include <msp/strings/format.h>
   4 #include <msp/time/utils.h>
   5 #include "builder.h"
   6 #include "filetarget.h"
   7 #include "sourcepackage.h"
   8
   9 using namespace std;
  10 using namespace Msp;
  11
  12 FileTarget::FileTarget(Builder &b, const FS::Path &a):
  13         Target(b, generate_name(b, 0, a)),
  14         path(a)
  15 {
  16         init(0);
  17 }
  18
  19 FileTarget::FileTarget(Builder &b, const SourcePackage &p, const FS::Path &a):
  20         Target(b, generate_name(b, &p, a)),
  21         path(a)
  22 {
  23         init(&p);
  24 }
  25
  26 void FileTarget::init(const SourcePackage *p)
  27 {
  28         size = 0;
  29         package = p;
  30
  31         builder.get_vfs().register_path(path, this);
  32
  33         if(FS::Stat st = FS::lstat(path))
  34         {
  35                 mtime = st.get_modify_time();
  36                 size = st.get_size();
  37         }
  38 }
  39
  40 string FileTarget::generate_name(Builder &builder, const SourcePackage *pkg, const FS::Path &path)
  41 {
  42         if(pkg && FS::descendant_depth(path, pkg->get_source_directory())>=0)
  43         {
  44                 FS::Path relpath = FS::relative(path, pkg->get_source_directory());
  45                 return format("<%s>%s", pkg->get_name(), relpath.str().substr(1));
  46         }
  47         else if(FS::descendant_depth(path, builder.get_prefix())>=0)
  48         {
  49                 FS::Path relpath = FS::relative(path, builder.get_prefix());
  50                 builder.get_logger().log("debug", format("%s %s %s", path, builder.get_prefix(), relpath));
  51                 return "<prefix>"+relpath.str().substr(1);
  52         }
  53
  54         return path.str();
  55 }
  56
  57 void FileTarget::touch()
  58 {
  59         mtime = Time::now();
  60         signal_bubble_rebuild.emit();
  61 }
  62
  63 void FileTarget::check_rebuild()
  64 {
  65         if(!tool)
  66                 return;
  67
  68         if(!mtime)
  69                 mark_rebuild("Does not exist");
  70         else
  71         {
  72                 for(Dependencies::iterator i=depends.begin(); (i!=depends.end() && !needs_rebuild()); ++i)
  73                 {
  74                         FileTarget *ft = dynamic_cast<FileTarget *>(*i);
  75                         if(ft && ft->get_mtime()>mtime)
  76                                 mark_rebuild((*i)->get_name()+" has changed");
  77                         else if((*i)->needs_rebuild())
  78                                 mark_rebuild((*i)->get_name()+" needs rebuilding");
  79                 }
  80         }
  81
  82         if(!needs_rebuild() && package && package->get_config().get_mtime()>mtime)
  83                 mark_rebuild("Package options changed");
  84 }
  85
  86 Task *FileTarget::build()
  87 {
  88         if(tool && !builder.get_dry_run() && mtime)
  89                 FS::unlink(path);
  90
  91         return Target::build();
  92 }