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         nested_build_sig = false;
  34         arch_in_build_sig = false;
  35
  36         builder.get_vfs().register_path(path, this);
  37
  38         stat();
  39 }
  40
  41 void FileTarget::stat()
  42 {
  43         if(FS::Stat st = FS::lstat(path))
  44         {
  45                 mtime = st.get_modify_time();
  46                 size = st.get_size();
  47         }
  48 }
  49
  50 string FileTarget::generate_name(Builder &builder, const SourcePackage *pkg, const FS::Path &path)
  51 {
  52         if(pkg && FS::descendant_depth(path, pkg->get_source_directory())>=0)
  53         {
  54                 FS::Path relpath = FS::relative(path, pkg->get_source_directory());
  55                 return format("<%s>%s", pkg->get_name(), relpath.str().substr(1));
  56         }
  57         else if(FS::descendant_depth(path, builder.get_prefix())>=0)
  58         {
  59                 FS::Path relpath = FS::relative(path, builder.get_prefix());
  60                 return "<prefix>"+relpath.str().substr(1);
  61         }
  62
  63         return path.str();
  64 }
  65
  66 void FileTarget::touch()
  67 {
  68         mtime = Time::now();
  69         modified();
  70         signal_bubble_rebuild.emit();
  71 }
  72
  73 void FileTarget::check_rebuild()
  74 {
  75         if(!tool || needs_rebuild())
  76                 return;
  77
  78         if(!mtime)
  79                 mark_rebuild("Does not exist");
  80         else
  81         {
  82                 for(Dependencies::iterator i=depends.begin(); (i!=depends.end() && !needs_rebuild()); ++i)
  83                 {
  84                         FileTarget *ft = dynamic_cast<FileTarget *>(*i);
  85                         if(ft && ft->get_mtime()>mtime)
  86                                 mark_rebuild((*i)->get_name()+" has changed");
  87                         else if((*i)->needs_rebuild())
  88                                 mark_rebuild((*i)->get_name()+" needs rebuilding");
  89                 }
  90         }
  91
  92         if(!needs_rebuild())
  93         {
  94                 // Some side effects might not exist
  95                 for(Dependencies::iterator i=side_effects.begin(); (i!=side_effects.end() && !needs_rebuild()); ++i)
  96                         if((*i)->needs_rebuild())
  97                                 mark_rebuild((*i)->get_name()+" needs rebuilding");
  98         }
  99
 100         if(!needs_rebuild() && package)
 101         {
 102                 if(package->get_config().get_mtime()>mtime)
 103                         mark_rebuild("Package options changed");
 104
 105                 if(tool->get_executable())
 106                 {
 107                         string build_sig = create_build_signature();
 108                         if(package->get_cache().has_key(this, "build_sig"))
 109                         {
 110                                 if(package->get_cache().get_value(this, "build_sig")!=build_sig)
 111                                         mark_rebuild("Build signature changed");
 112                         }
 113                 }
 114         }
 115 }
 116
 117 string FileTarget::create_build_signature() const
 118 {
 119         if(!package)
 120                 return string();
 121
 122         const BuildInfo &binfo = (component ? component->get_build_info() : package->get_build_info());
 123         list<string> sigs;
 124         if(nested_build_sig && component)
 125         {
 126                 set<const Tool *> depend_tools;
 127                 for(Dependencies::const_iterator i=depends.begin(); i!=depends.end(); ++i)
 128                         if((*i)->get_component()==component && (*i)->get_tool())
 129                                 depend_tools.insert((*i)->get_tool());
 130
 131                 for(set<const Tool *>::const_iterator i=depend_tools.begin(); i!=depend_tools.end(); ++i)
 132                         sigs.push_back((*i)->create_build_signature(binfo));
 133                 sigs.sort();
 134                 sigs.push_front(tool->create_build_signature(binfo));
 135         }
 136         else
 137                 sigs.push_back(tool->create_build_signature(binfo));
 138
 139         if(arch_in_build_sig)
 140                 if(const Architecture *arch = tool->get_architecture())
 141                         sigs.push_front(arch->get_name());
 142
 143         return join(sigs.begin(), sigs.end(), ";");
 144 }
 145
 146 void FileTarget::build(Task &task)
 147 {
 148         task.add_file(path);
 149         task.set_unlink(true);
 150 }
 151
 152 void FileTarget::build_finished(bool success)
 153 {
 154         if(success)
 155         {
 156                 stat();
 157                 if(package)
 158                 {
 159                         string build_sig = create_build_signature();
 160                         if(!build_sig.empty())
 161                                 package->get_cache().set_value(this, "build_sig", build_sig);
 162                 }
 163         }
 164
 165         Target::build_finished(success);
 166 }
 167
 168 void FileTarget::clean()
 169 {
 170         if(mtime)
 171         {
 172                 FS::unlink(path);
 173                 mtime = Time::TimeStamp();
 174                 size = 0;
 175                 check_rebuild();
 176         }
 177 }