source/lib/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                 if(primary_target && primary_target->needs_rebuild())
  95                         mark_rebuild(primary_target->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         vector<string> sigs;
 122
 123         if(arch_in_build_sig)
 124                 if(const Architecture *arch = tool->get_architecture())
 125                         sigs.push_back(arch->get_name());
 126
 127         sigs.push_back(tool->create_build_signature(binfo));
 128
 129         if(nested_build_sig && component)
 130         {
 131                 vector<const Tool *> seen_tools;
 132                 vector<string> tool_sigs;
 133                 for(Target *d: depends)
 134                         if(const Tool *t = d->get_tool())
 135                                 if(d->get_component()==component && !any_equals(seen_tools, t))
 136                                 {
 137                                         seen_tools.push_back(t);
 138                                         tool_sigs.push_back(t->create_build_signature(binfo));
 139                                 }
 140
 141                 sort(tool_sigs);
 142                 sigs.insert(sigs.end(), make_move_iterator(tool_sigs.begin()), make_move_iterator(tool_sigs.end()));
 143         }
 144
 145         return join(sigs.begin(), sigs.end(), ";");
 146 }
 147
 148 void FileTarget::build(Task &task)
 149 {
 150         task.add_target(*this);
 151         task.set_unlink(true);
 152 }
 153
 154 void FileTarget::build_finished(bool success)
 155 {
 156         if(success)
 157         {
 158                 stat();
 159                 if(package)
 160                 {
 161                         string build_sig = create_build_signature();
 162                         if(!build_sig.empty())
 163                                 package->get_cache().set_value(this, "build_sig", build_sig);
 164                 }
 165         }
 166
 167         Target::build_finished(success);
 168 }
 169
 170 void FileTarget::clean()
 171 {
 172         if(mtime)
 173         {
 174                 FS::unlink(path);
 175                 mtime = Time::TimeStamp();
 176                 size = 0;
 177                 check_rebuild();
 178         }
 179 }