source/filetarget.cpp

   1 #include <msp/core/algorithm.h>
   2 #include <msp/fs/stat.h>
   3 #include <msp/fs/utils.h>
   4 #include <msp/strings/format.h>
   5 #include <msp/strings/utils.h>
   6 #include <msp/time/utils.h>
   7 #include "builder.h"
   8 #include "filetarget.h"
   9 #include "sourcepackage.h"
  10 #include "task.h"
  11 #include "tool.h"
  12
  13 using namespace std;
  14 using namespace Msp;
  15
  16 FileTarget::FileTarget(Builder &b, const FS::Path &a):
  17         FileTarget(b, 0, a)
  18 { }
  19
  20 FileTarget::FileTarget(Builder &b, const SourcePackage &p, const FS::Path &a):
  21         FileTarget(b, &p, a)
  22 { }
  23
  24 FileTarget::FileTarget(Builder &b, const SourcePackage *p, const FS::Path &a):
  25         Target(b, generate_name(b, p, a)),
  26         path(a)
  27 {
  28         package = p;
  29
  30         builder.get_vfs().register_path(path, this);
  31
  32         stat();
  33 }
  34
  35 void FileTarget::stat()
  36 {
  37         if(FS::Stat st = FS::lstat(path))
  38         {
  39                 mtime = st.get_modify_time();
  40                 size = st.get_size();
  41         }
  42 }
  43
  44 string FileTarget::generate_name(Builder &builder, const SourcePackage *pkg, const FS::Path &path)
  45 {
  46         if(pkg && FS::descendant_depth(path, pkg->get_source_directory())>=0)
  47         {
  48                 FS::Path relpath = FS::relative(path, pkg->get_source_directory());
  49                 return format("<%s>%s", pkg->get_name(), relpath.str().substr(1));
  50         }
  51         else if(FS::descendant_depth(path, builder.get_prefix())>=0)
  52         {
  53                 FS::Path relpath = FS::relative(path, builder.get_prefix());
  54                 return "<prefix>"+relpath.str().substr(1);
  55         }
  56
  57         return path.str();
  58 }
  59
  60 void FileTarget::touch()
  61 {
  62         mtime = Time::now();
  63         modified();
  64         signal_bubble_rebuild.emit();
  65 }
  66
  67 void FileTarget::check_rebuild()
  68 {
  69         if(!tool || needs_rebuild())
  70                 return;
  71
  72         if(!mtime)
  73                 mark_rebuild("Does not exist");
  74         else
  75         {
  76                 for(Target *d: depends)
  77                 {
  78                         FileTarget *ft = dynamic_cast<FileTarget *>(d);
  79                         if(ft && ft->get_mtime()>mtime)
  80                                 mark_rebuild(d->get_name()+" has changed");
  81                         else if(d->needs_rebuild())
  82                                 mark_rebuild(d->get_name()+" needs rebuilding");
  83                         if(needs_rebuild())
  84                                 break;
  85                 }
  86         }
  87
  88         if(!needs_rebuild())
  89         {
  90                 // Some side effects might not exist
  91                 auto i = find_if(side_effects, [](const Target *s){ return s->needs_rebuild(); });
  92                 if(i!=side_effects.end())
  93                         mark_rebuild((*i)->get_name()+" needs rebuilding");
  94         }
  95
  96         if(!needs_rebuild() && package)
  97         {
  98                 if(package->get_config().get_mtime()>mtime)
  99                         mark_rebuild("Package options changed");
 100
 101                 if(tool->get_executable())
 102                 {
 103                         string build_sig = create_build_signature();
 104                         if(package->get_cache().has_key(this, "build_sig"))
 105                         {
 106                                 if(package->get_cache().get_value(this, "build_sig")!=build_sig)
 107                                         mark_rebuild("Build signature changed");
 108                         }
 109                 }
 110         }
 111 }
 112
 113 string FileTarget::create_build_signature() const
 114 {
 115         if(!package)
 116                 return string();
 117
 118         const BuildInfo &binfo = (component ? component->get_build_info() : package->get_build_info());
 119         vector<string> sigs;
 120
 121         if(arch_in_build_sig)
 122                 if(const Architecture *arch = tool->get_architecture())
 123                         sigs.push_back(arch->get_name());
 124
 125         sigs.push_back(tool->create_build_signature(binfo));
 126
 127         if(nested_build_sig && component)
 128         {
 129                 vector<const Tool *> seen_tools;
 130                 vector<string> tool_sigs;
 131                 for(Target *d: depends)
 132                         if(const Tool *t = d->get_tool())
 133                                 if(d->get_component()==component && !any_equals(seen_tools, t))
 134                                 {
 135                                         seen_tools.push_back(t);
 136                                         tool_sigs.push_back(t->create_build_signature(binfo));
 137                                 }
 138
 139                 sort(tool_sigs);
 140                 sigs.insert(sigs.end(), make_move_iterator(tool_sigs.begin()), make_move_iterator(tool_sigs.end()));
 141         }
 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 }