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 SourcePackage *p, const FS::Path &a):
  17         Target(b, generate_name(b, p, a)),
  18         path(a)
  19 {
  20         package = p;
  21
  22         builder.get_vfs().register_path(path, this);
  23
  24         stat();
  25 }
  26
  27 void FileTarget::stat()
  28 {
  29         if(FS::Stat st = FS::lstat(path))
  30         {
  31                 mtime = st.get_modify_time();
  32                 size = st.get_size();
  33         }
  34 }
  35
  36 string FileTarget::generate_name(Builder &builder, const SourcePackage *pkg, const FS::Path &path)
  37 {
  38         if(pkg && FS::descendant_depth(path, pkg->get_source_directory())>=0)
  39         {
  40                 FS::Path relpath = FS::relative(path, pkg->get_source_directory());
  41                 return format("<%s>%s", pkg->get_name(), relpath.str().substr(1));
  42         }
  43         else if(FS::descendant_depth(path, builder.get_prefix())>=0)
  44         {
  45                 FS::Path relpath = FS::relative(path, builder.get_prefix());
  46                 return "<prefix>"+relpath.str().substr(1);
  47         }
  48
  49         return path.str();
  50 }
  51
  52 void FileTarget::touch()
  53 {
  54         mtime = Time::now();
  55         modified();
  56         signal_bubble_rebuild.emit();
  57 }
  58
  59 void FileTarget::check_rebuild()
  60 {
  61         if(!tool || needs_rebuild())
  62                 return;
  63
  64         if(!mtime)
  65                 mark_rebuild("Does not exist");
  66         else
  67         {
  68                 for(Target *d: depends)
  69                 {
  70                         FileTarget *ft = dynamic_cast<FileTarget *>(d);
  71                         if(ft && ft->get_mtime()>mtime)
  72                                 mark_rebuild(d->get_name()+" has changed");
  73                         else if(d->needs_rebuild())
  74                                 mark_rebuild(d->get_name()+" needs rebuilding");
  75                         if(needs_rebuild())
  76                                 break;
  77                 }
  78         }
  79
  80         if(!needs_rebuild())
  81         {
  82                 // Some side effects might not exist
  83                 auto i = find_if(side_effects, [](const Target *s){ return s->needs_rebuild(); });
  84                 if(i!=side_effects.end())
  85                         mark_rebuild((*i)->get_name()+" needs rebuilding");
  86         }
  87
  88         if(!needs_rebuild() && package)
  89         {
  90                 if(package->get_config().get_mtime()>mtime)
  91                         mark_rebuild("Package options changed");
  92
  93                 if(tool->get_executable())
  94                 {
  95                         string build_sig = create_build_signature();
  96                         if(package->get_cache().has_key(this, "build_sig"))
  97                         {
  98                                 if(package->get_cache().get_value(this, "build_sig")!=build_sig)
  99                                         mark_rebuild("Build signature changed");
 100                         }
 101                 }
 102         }
 103 }
 104
 105 string FileTarget::create_build_signature() const
 106 {
 107         if(!package)
 108                 return string();
 109
 110         const BuildInfo &binfo = (component ? component->get_build_info() : package->get_build_info());
 111         vector<string> sigs;
 112
 113         if(arch_in_build_sig)
 114                 if(const Architecture *arch = tool->get_architecture())
 115                         sigs.push_back(arch->get_name());
 116
 117         sigs.push_back(tool->create_build_signature(binfo));
 118
 119         if(nested_build_sig && component)
 120         {
 121                 vector<const Tool *> seen_tools;
 122                 vector<string> tool_sigs;
 123                 for(Target *d: depends)
 124                         if(const Tool *t = d->get_tool())
 125                                 if(d->get_component()==component && !any_equals(seen_tools, t))
 126                                 {
 127                                         seen_tools.push_back(t);
 128                                         tool_sigs.push_back(t->create_build_signature(binfo));
 129                                 }
 130
 131                 sort(tool_sigs);
 132                 sigs.insert(sigs.end(), make_move_iterator(tool_sigs.begin()), make_move_iterator(tool_sigs.end()));
 133         }
 134
 135         return join(sigs.begin(), sigs.end(), ";");
 136 }
 137
 138 void FileTarget::build(Task &task)
 139 {
 140         task.add_file(path);
 141         task.set_unlink(true);
 142 }
 143
 144 void FileTarget::build_finished(bool success)
 145 {
 146         if(success)
 147         {
 148                 stat();
 149                 if(package)
 150                 {
 151                         string build_sig = create_build_signature();
 152                         if(!build_sig.empty())
 153                                 package->get_cache().set_value(this, "build_sig", build_sig);
 154                 }
 155         }
 156
 157         Target::build_finished(success);
 158 }
 159
 160 void FileTarget::clean()
 161 {
 162         if(mtime)
 163         {
 164                 FS::unlink(path);
 165                 mtime = Time::TimeStamp();
 166                 size = 0;
 167                 check_rebuild();
 168         }
 169 }