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         stat();
  34 }
  35
  36 void FileTarget::stat()
  37 {
  38         if(FS::Stat st = FS::lstat(path))
  39         {
  40                 mtime = st.get_modify_time();
  41                 size = st.get_size();
  42         }
  43 }
  44
  45 string FileTarget::generate_name(Builder &builder, const SourcePackage *pkg, const FS::Path &path)
  46 {
  47         if(pkg && FS::descendant_depth(path, pkg->get_source_directory())>=0)
  48         {
  49                 FS::Path relpath = FS::relative(path, pkg->get_source_directory());
  50                 return format("<%s>%s", pkg->get_name(), relpath.str().substr(1));
  51         }
  52         else if(FS::descendant_depth(path, builder.get_prefix())>=0)
  53         {
  54                 FS::Path relpath = FS::relative(path, builder.get_prefix());
  55                 builder.get_logger().log("debug", format("%s %s %s", path, builder.get_prefix(), relpath));
  56                 return "<prefix>"+relpath.str().substr(1);
  57         }
  58
  59         return path.str();
  60 }
  61
  62 void FileTarget::touch()
  63 {
  64         mtime = Time::now();
  65         signal_bubble_rebuild.emit();
  66 }
  67
  68 void FileTarget::check_rebuild()
  69 {
  70         if(!tool)
  71                 return;
  72
  73         if(!mtime)
  74                 mark_rebuild("Does not exist");
  75         else
  76         {
  77                 for(Dependencies::iterator i=depends.begin(); (i!=depends.end() && !needs_rebuild()); ++i)
  78                 {
  79                         FileTarget *ft = dynamic_cast<FileTarget *>(*i);
  80                         if(ft && ft->get_mtime()>mtime)
  81                                 mark_rebuild((*i)->get_name()+" has changed");
  82                         else if((*i)->needs_rebuild())
  83                                 mark_rebuild((*i)->get_name()+" needs rebuilding");
  84                 }
  85         }
  86
  87         if(!needs_rebuild() && package && package->get_config().get_mtime()>mtime)
  88                 mark_rebuild("Package options changed");
  89 }
  90
  91 Task *FileTarget::build()
  92 {
  93         if(tool && !builder.get_dry_run() && mtime)
  94                 FS::unlink(path);
  95
  96         return Target::build();
  97 }
  98
  99 void FileTarget::build_finished(bool success)
 100 {
 101         if(success)
 102                 stat();
 103
 104         Target::build_finished(success);
 105 }