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 "task.h"
  10 #include "tool.h"
  11
  12 using namespace std;
  13 using namespace Msp;
  14
  15 FileTarget::FileTarget(Builder &b, const FS::Path &a):
  16         Target(b, generate_name(b, 0, a)),
  17         path(a)
  18 {
  19         init(0);
  20 }
  21
  22 FileTarget::FileTarget(Builder &b, const SourcePackage &p, const FS::Path &a):
  23         Target(b, generate_name(b, &p, a)),
  24         path(a)
  25 {
  26         init(&p);
  27 }
  28
  29 void FileTarget::init(const SourcePackage *p)
  30 {
  31         size = 0;
  32         package = p;
  33
  34         builder.get_vfs().register_path(path, this);
  35
  36         stat();
  37 }
  38
  39 void FileTarget::stat()
  40 {
  41         if(FS::Stat st = FS::lstat(path))
  42         {
  43                 mtime = st.get_modify_time();
  44                 size = st.get_size();
  45         }
  46 }
  47
  48 string FileTarget::generate_name(Builder &builder, const SourcePackage *pkg, const FS::Path &path)
  49 {
  50         if(pkg && FS::descendant_depth(path, pkg->get_source_directory())>=0)
  51         {
  52                 FS::Path relpath = FS::relative(path, pkg->get_source_directory());
  53                 return format("<%s>%s", pkg->get_name(), relpath.str().substr(1));
  54         }
  55         else if(FS::descendant_depth(path, builder.get_prefix())>=0)
  56         {
  57                 FS::Path relpath = FS::relative(path, builder.get_prefix());
  58                 return "<prefix>"+relpath.str().substr(1);
  59         }
  60
  61         return path.str();
  62 }
  63
  64 void FileTarget::touch()
  65 {
  66         mtime = Time::now();
  67         modified();
  68         signal_bubble_rebuild.emit();
  69 }
  70
  71 void FileTarget::check_rebuild()
  72 {
  73         if(!tool || needs_rebuild())
  74                 return;
  75
  76         if(!mtime)
  77                 mark_rebuild("Does not exist");
  78         else
  79         {
  80                 for(Dependencies::iterator i=depends.begin(); (i!=depends.end() && !needs_rebuild()); ++i)
  81                 {
  82                         FileTarget *ft = dynamic_cast<FileTarget *>(*i);
  83                         if(ft && ft->get_mtime()>mtime)
  84                                 mark_rebuild((*i)->get_name()+" has changed");
  85                         else if((*i)->needs_rebuild())
  86                                 mark_rebuild((*i)->get_name()+" needs rebuilding");
  87                 }
  88         }
  89
  90         if(!needs_rebuild())
  91         {
  92                 // Some side effects might not exist
  93                 for(Dependencies::iterator i=side_effects.begin(); (i!=side_effects.end() && !needs_rebuild()); ++i)
  94                         if((*i)->needs_rebuild())
  95                                 mark_rebuild((*i)->get_name()+" needs rebuilding");
  96         }
  97
  98         if(!needs_rebuild() && package)
  99         {
 100                 if(package->get_config().get_mtime()>mtime)
 101                         mark_rebuild("Package options changed");
 102
 103                 if(tool->get_executable())
 104                 {
 105                         string build_sig = create_build_signature();
 106                         if(package->get_cache().has_key(this, "build_sig"))
 107                         {
 108                                 if(package->get_cache().get_value(this, "build_sig")!=build_sig)
 109                                         mark_rebuild("Build signature changed");
 110                         }
 111                 }
 112         }
 113 }
 114
 115 string FileTarget::create_build_signature() const
 116 {
 117         if(!package)
 118                 return string();
 119
 120         const BuildInfo &binfo = (component ? component->get_build_info() : package->get_build_info());
 121         return tool->create_build_signature(binfo);
 122 }
 123
 124 Task *FileTarget::build()
 125 {
 126         Task *task = Target::build();
 127         task->set_file(path);
 128         task->set_unlink(true);
 129         return task;
 130 }
 131
 132 void FileTarget::build_finished(bool success)
 133 {
 134         if(success)
 135         {
 136                 stat();
 137                 if(package)
 138                 {
 139                         string build_sig = create_build_signature();
 140                         if(!build_sig.empty())
 141                                 package->get_cache().set_value(this, "build_sig", build_sig);
 142                 }
 143         }
 144
 145         Target::build_finished(success);
 146 }
 147
 148 void FileTarget::clean()
 149 {
 150         if(mtime)
 151         {
 152                 FS::unlink(path);
 153                 mtime = Time::TimeStamp();
 154                 size = 0;
 155                 check_rebuild();
 156         }
 157 }