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// file : build/context.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
// license : MIT; see accompanying LICENSE file
#include <build/context>
#include <ostream>
#include <cassert>
#include <build/scope>
using namespace std;
namespace build
{
path work;
path home;
unordered_set<string> meta_operations;
unordered_set<string> operations;
path
src_out (const path& out, scope& s)
{
return src_out (out,
s["out_root"].as<const path&> (),
s["src_root"].as<const path&> ());
}
path
out_src (const path& src, scope& s)
{
return out_src (src,
s["out_root"].as<const path&> (),
s["src_root"].as<const path&> ());
}
path
src_out (const path& o, const path& out_root, const path& src_root)
{
assert (o.sub (out_root));
return src_root / o.leaf (out_root);
}
path
out_src (const path& s, const path& out_root, const path& src_root)
{
assert (s.sub (src_root));
return out_root / s.leaf (src_root);
}
path
relative_work (const path& p)
{
if (p.sub (work))
return p.leaf (work);
// If work is a sub-path of {src,out}_root and this path is also a
// sub-path of it, then use '..' to form a relative path.
//
// Don't think this is a good heuristic. For example, why shouldn't
// we display paths from imported projects as relative if they are
// more readable than absolute?
//
/*
if ((work.sub (src_root) && p.sub (src_root)) ||
(work.sub (out_root) && p.sub (out_root)))
return p.relative (work);
*/
if (p.root_directory () == work.root_directory ())
{
path r (p.relative (work));
if (r.string ().size () < p.string ().size ())
return r;
}
return p;
}
}
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