-/* $Id$
-
-This file is part of builder
-Copyright © 2006-2009 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include <msp/fs/stat.h>
-#include <msp/fs/utils.h>
-#include <msp/time/utils.h>
-#include "action.h"
-#include "builder.h"
-#include "filetarget.h"
-#include "package.h"
-#include "sourcepackage.h"
-#include "target.h"
-
-using namespace std;
-using namespace Msp;
-
-Target::Target(Builder &b, const Package *p, const string &n):
- builder(b),
- package(p),
- name(n),
- buildable(false),
- building(false),
- rebuild(false),
- deps_ready(false),
- preparing(false),
- prepared(false)
-{
- builder.add_target(this);
-}
-
-Target *Target::get_buildable_target()
-{
- if(!rebuild)
- return 0;
-
- bool self_ok = !building;
- for(TargetList::iterator i=depends.begin(); i!=depends.end(); ++i)
- {
- Target *tgt = (*i)->get_buildable_target();
- if(tgt)
- return tgt;
- else if((*i)->get_rebuild())
- self_ok = false;
- }
-
- if(self_ok)
- return this;
-
- return 0;
-}
-
-void Target::add_depend(Target *dep)
-{
- if(dep==this)
- throw InvalidParameterValue("A target can't depend on itself");
- depends.push_back(dep);
- dep->rdepends.push_back(this);
-}
-
-void Target::prepare()
-{
- if(prepared)
- return;
- if(preparing)
- {
- builder.problem((package ? package->get_name() : string()), "Dependency cycle detected at "+name);
- return;
- }
-
- preparing = true;
- for(TargetList::iterator i=depends.begin(); i!=depends.end(); ++i)
- (*i)->prepare();
-
- check_rebuild();
- preparing = false;
- prepared = true;
-}
-
-Action *Target::build()
-{
- if(!buildable)
- {
- rebuild = false;
- return 0;
- }
-
- if(FileTarget *ft = dynamic_cast<FileTarget *>(this))
- if(!builder.get_dry_run() && FS::exists(ft->get_path()))
- FS::unlink(ft->get_path());
-
- Action *action = create_action();
- if(action)
- {
- action->signal_done.connect(sigc::mem_fun(this, &Target::build_done));
-
- building = true;
- }
-
- return action;
-}
-
-void Target::touch()
-{
- mtime = Time::now();
-}
-
-void Target::mark_rebuild(const std::string &reason)
-{
- rebuild = true;
- rebuild_reason = reason;
-}
-
-void Target::check_rebuild()
-{
- if(!buildable)
- return;
-
- if(builder.get_build_all())
- mark_rebuild("Rebuilding everything");
- else if(!mtime)
- mark_rebuild("Does not exist");
- else
- {
- for(TargetList::iterator i=depends.begin(); (i!=depends.end() && !rebuild); ++i)
- {
- if((*i)->get_mtime()>mtime)
- mark_rebuild(FS::basename((*i)->get_name())+" has changed");
- else if((*i)->get_rebuild())
- mark_rebuild(FS::basename((*i)->get_name())+" needs rebuilding");
- }
- }
-
- const SourcePackage *spkg = dynamic_cast<const SourcePackage *>(package);
- if(!rebuild && spkg && spkg->get_config().get_mtime()>mtime)
- mark_rebuild("Package options changed");
-}
-
-void Target::build_done()
-{
- building = false;
- rebuild = false;
-}