-#include <msp/path/utils.h>
+/* $Id$
+
+This file is part of builder
+Copyright © 2006-2007 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 "package.h"
+#include "sourcepackage.h"
#include "target.h"
using namespace std;
using namespace Msp;
+/**
+Tries to locate a target that will help getting this target built. If all
+dependencies are up-to-date, returns this target. If there are no targets
+ready to be built (maybe because they are being built right now), returns 0.
+*/
Target *Target::get_buildable_target()
{
- bool self_ok=true;
+ if(!rebuild)
+ return 0;
+
+ bool self_ok=!building;
for(TargetList::iterator i=depends.begin(); i!=depends.end(); ++i)
{
Target *tgt=(*i)->get_buildable_target();
self_ok=false;
}
- if(self_ok && rebuild && !building)
+ 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);
}
+/**
+Prepares the target by recursively preparing dependencies, then checking
+whether rebuilding is needed. A flag is used to prevent unnecessary
+executions.
+*/
void Target::prepare()
{
if(prepared)
return;
+ prepared=true;
for(TargetList::iterator i=depends.begin(); i!=depends.end(); ++i)
(*i)->prepare();
check_rebuild();
+
}
+Action *Target::build()
+{
+ if(!buildable)
+ {
+ rebuild=false;
+ return 0;
+ }
+
+ if(!builder.get_dry_run() && FS::exists(name))
+ FS::unlink(name);
+
+ Action *action=create_action();
+ if(action)
+ {
+ action->signal_done.connect(sigc::mem_fun(this, &Target::build_done));
+
+ building=true;
+ }
+
+ return action;
+}
+
+/**
+Returns the number of targets that need to be rebuilt in order to get this
+target up-to-date.
+*/
unsigned Target::count_rebuild()
{
if(counted)
return count;
}
+/**
+Changes the mtime of the target to the current time.
+*/
void Target::touch()
{
mtime=Time::now();
prepared(false),
counted(false)
{
+ builder.add_target(this);
+
struct stat st;
- if(!Path::stat(name, st))
+ if(!FS::stat(name, st))
mtime=Time::TimeStamp::from_unixtime(st.st_mtime);
}
rebuild_reason=reason;
}
+/**
+Checks if this target needs to be rebuilt and why.
+*/
void Target::check_rebuild()
{
if(!buildable)
for(TargetList::iterator i=depends.begin(); (i!=depends.end() && !rebuild); ++i)
{
if((*i)->get_mtime()>mtime)
- mark_rebuild(Path::basename((*i)->get_name())+" has changed");
+ mark_rebuild(FS::basename((*i)->get_name())+" has changed");
else if((*i)->get_rebuild())
- mark_rebuild(Path::basename((*i)->get_name())+" needs rebuilding");
+ mark_rebuild(FS::basename((*i)->get_name())+" needs rebuilding");
}
}
- if(!rebuild && package && package->get_config().get_mtime()>mtime)
- mark_rebuild("Package options changed");
-}
-Action *Target::build(Action *action)
-{
- building=true;
- action->signal_done.connect(sigc::mem_fun(this, &Target::build_done));
- return action;
+ const SourcePackage *spkg=dynamic_cast<const SourcePackage *>(package);
+ if(!rebuild && spkg && spkg->get_config().get_mtime()>mtime)
+ mark_rebuild("Package options changed");
}
+/**
+Handles for the build_done signal of Action.
+*/
void Target::build_done()
{
building=false;