source/filetarget.cpp

   1 #include <msp/fs/stat.h>
   2 #include <msp/fs/utils.h>
   3 #include <msp/strings/format.h>
   4 #include <msp/strings/utils.h>
   5 #include <msp/time/utils.h>
   6 #include "builder.h"
   7 #include "filetarget.h"
   8 #include "sourcepackage.h"
   9 #include "tool.h"
  10
  11 using namespace std;
  12 using namespace Msp;
  13
  14 FileTarget::FileTarget(Builder &b, const FS::Path &a):
  15         Target(b, generate_name(b, 0, a)),
  16         path(a)
  17 {
  18         init(0);
  19 }
  20
  21 FileTarget::FileTarget(Builder &b, const SourcePackage &p, const FS::Path &a):
  22         Target(b, generate_name(b, &p, a)),
  23         path(a)
  24 {
  25         init(&p);
  26 }
  27
  28 void FileTarget::init(const SourcePackage *p)
  29 {
  30         size = 0;
  31         package = p;
  32
  33         builder.get_vfs().register_path(path, this);
  34
  35         stat();
  36 }
  37
  38 void FileTarget::stat()
  39 {
  40         if(FS::Stat st = FS::lstat(path))
  41         {
  42                 mtime = st.get_modify_time();
  43                 size = st.get_size();
  44         }
  45 }
  46
  47 string FileTarget::generate_name(Builder &builder, const SourcePackage *pkg, const FS::Path &path)
  48 {
  49         if(pkg && FS::descendant_depth(path, pkg->get_source_directory())>=0)
  50         {
  51                 FS::Path relpath = FS::relative(path, pkg->get_source_directory());
  52                 return format("<%s>%s", pkg->get_name(), relpath.str().substr(1));
  53         }
  54         else if(FS::descendant_depth(path, builder.get_prefix())>=0)
  55         {
  56                 FS::Path relpath = FS::relative(path, builder.get_prefix());
  57                 return "<prefix>"+relpath.str().substr(1);
  58         }
  59
  60         return path.str();
  61 }
  62
  63 void FileTarget::touch()
  64 {
  65         mtime = Time::now();
  66         signal_bubble_rebuild.emit();
  67 }
  68
  69 void FileTarget::check_rebuild()
  70 {
  71         if(!tool)
  72                 return;
  73
  74         if(!mtime)
  75                 mark_rebuild("Does not exist");
  76         else
  77         {
  78                 for(Dependencies::iterator i=depends.begin(); (i!=depends.end() && !needs_rebuild()); ++i)
  79                 {
  80                         FileTarget *ft = dynamic_cast<FileTarget *>(*i);
  81                         if(ft && ft->get_mtime()>mtime)
  82                                 mark_rebuild((*i)->get_name()+" has changed");
  83                         else if((*i)->needs_rebuild())
  84                                 mark_rebuild((*i)->get_name()+" needs rebuilding");
  85                 }
  86         }
  87
  88         if(!needs_rebuild() && package)
  89         {
  90                 if(package->get_config().get_mtime()>mtime)
  91                         mark_rebuild("Package options changed");
  92
  93                 string build_sig = create_build_signature();
  94                 if(package->get_cache().has_key(this, "build_sig"))
  95                 {
  96                         if(package->get_cache().get_value(this, "build_sig")!=build_sig)
  97                                 mark_rebuild("Build signature changed");
  98                 }
  99         }
 100 }
 101
 102 string FileTarget::create_build_signature() const
 103 {
 104         if(!package)
 105                 return string();
 106
 107         const BuildInfo &binfo = (component ? component->get_build_info() : package->get_build_info());
 108         return tool->create_build_signature(binfo);
 109 }
 110
 111 Task *FileTarget::build()
 112 {
 113         if(tool && !builder.get_dry_run() && mtime)
 114                 FS::unlink(path);
 115
 116         return Target::build();
 117 }
 118
 119 void FileTarget::build_finished(bool success)
 120 {
 121         if(success)
 122         {
 123                 stat();
 124                 if(package)
 125                 {
 126                         string build_sig = create_build_signature();
 127                         if(!build_sig.empty())
 128                                 package->get_cache().set_value(this, "build_sig", build_sig);
 129                 }
 130         }
 131
 132         Target::build_finished(success);
 133 }