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         Target(b, generate_name(b, 0, a)),
  18         path(a)
  19 {
  20         init(0);
  21 }
  22
  23 FileTarget::FileTarget(Builder &b, const SourcePackage &p, const FS::Path &a):
  24         Target(b, generate_name(b, &p, a)),
  25         path(a)
  26 {
  27         init(&p);
  28 }
  29
  30 void FileTarget::init(const SourcePackage *p)
  31 {
  32         size = 0;
  33         package = p;
  34         nested_build_sig = false;
  35         arch_in_build_sig = false;
  36
  37         builder.get_vfs().register_path(path, this);
  38
  39         stat();
  40 }
  41
  42 void FileTarget::stat()
  43 {
  44         if(FS::Stat st = FS::lstat(path))
  45         {
  46                 mtime = st.get_modify_time();
  47                 size = st.get_size();
  48         }
  49 }
  50
  51 string FileTarget::generate_name(Builder &builder, const SourcePackage *pkg, const FS::Path &path)
  52 {
  53         if(pkg && FS::descendant_depth(path, pkg->get_source_directory())>=0)
  54         {
  55                 FS::Path relpath = FS::relative(path, pkg->get_source_directory());
  56                 return format("<%s>%s", pkg->get_name(), relpath.str().substr(1));
  57         }
  58         else if(FS::descendant_depth(path, builder.get_prefix())>=0)
  59         {
  60                 FS::Path relpath = FS::relative(path, builder.get_prefix());
  61                 return "<prefix>"+relpath.str().substr(1);
  62         }
  63
  64         return path.str();
  65 }
  66
  67 void FileTarget::touch()
  68 {
  69         mtime = Time::now();
  70         modified();
  71         signal_bubble_rebuild.emit();
  72 }
  73
  74 void FileTarget::check_rebuild()
  75 {
  76         if(!tool || needs_rebuild())
  77                 return;
  78
  79         if(!mtime)
  80                 mark_rebuild("Does not exist");
  81         else
  82         {
  83                 for(Target *d: depends)
  84                 {
  85                         FileTarget *ft = dynamic_cast<FileTarget *>(d);
  86                         if(ft && ft->get_mtime()>mtime)
  87                                 mark_rebuild(d->get_name()+" has changed");
  88                         else if(d->needs_rebuild())
  89                                 mark_rebuild(d->get_name()+" needs rebuilding");
  90                         if(needs_rebuild())
  91                                 break;
  92                 }
  93         }
  94
  95         if(!needs_rebuild())
  96         {
  97                 // Some side effects might not exist
  98                 auto i = find_if(side_effects, [](const Target *s){ return s->needs_rebuild(); });
  99                 if(i!=side_effects.end())
 100                         mark_rebuild((*i)->get_name()+" needs rebuilding");
 101         }
 102
 103         if(!needs_rebuild() && package)
 104         {
 105                 if(package->get_config().get_mtime()>mtime)
 106                         mark_rebuild("Package options changed");
 107
 108                 if(tool->get_executable())
 109                 {
 110                         string build_sig = create_build_signature();
 111                         if(package->get_cache().has_key(this, "build_sig"))
 112                         {
 113                                 if(package->get_cache().get_value(this, "build_sig")!=build_sig)
 114                                         mark_rebuild("Build signature changed");
 115                         }
 116                 }
 117         }
 118 }
 119
 120 string FileTarget::create_build_signature() const
 121 {
 122         if(!package)
 123                 return string();
 124
 125         const BuildInfo &binfo = (component ? component->get_build_info() : package->get_build_info());
 126         list<string> sigs;
 127         if(nested_build_sig && component)
 128         {
 129                 set<const Tool *> depend_tools;
 130                 for(Target *d: depends)
 131                         if(d->get_component()==component && d->get_tool())
 132                                 depend_tools.insert(d->get_tool());
 133
 134                 for(const Tool *t: depend_tools)
 135                         sigs.push_back(t->create_build_signature(binfo));
 136                 sigs.sort();
 137                 sigs.push_front(tool->create_build_signature(binfo));
 138         }
 139         else
 140                 sigs.push_back(tool->create_build_signature(binfo));
 141
 142         if(arch_in_build_sig)
 143                 if(const Architecture *arch = tool->get_architecture())
 144                         sigs.push_front(arch->get_name());
 145
 146         return join(sigs.begin(), sigs.end(), ";");
 147 }
 148
 149 void FileTarget::build(Task &task)
 150 {
 151         task.add_file(path);
 152         task.set_unlink(true);
 153 }
 154
 155 void FileTarget::build_finished(bool success)
 156 {
 157         if(success)
 158         {
 159                 stat();
 160                 if(package)
 161                 {
 162                         string build_sig = create_build_signature();
 163                         if(!build_sig.empty())
 164                                 package->get_cache().set_value(this, "build_sig", build_sig);
 165                 }
 166         }
 167
 168         Target::build_finished(success);
 169 }
 170
 171 void FileTarget::clean()
 172 {
 173         if(mtime)
 174         {
 175                 FS::unlink(path);
 176                 mtime = Time::TimeStamp();
 177                 size = 0;
 178                 check_rebuild();
 179         }
 180 }