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// file : bpkg/pkg-unpack.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <bpkg/pkg-unpack>
#include <memory> // shared_ptr
#include <butl/process>
#include <bpkg/manifest>
#include <bpkg/types>
#include <bpkg/package>
#include <bpkg/package-odb>
#include <bpkg/utility>
#include <bpkg/database>
#include <bpkg/diagnostics>
#include <bpkg/pkg-verify>
using namespace std;
using namespace butl;
namespace bpkg
{
static shared_ptr<package>
pkg_unpack (database& db, const dir_path& c, const dir_path& d, bool purge)
{
tracer trace ("pkg_unpack(dir)");
if (!exists (d))
fail << "package directory " << d << " does not exist";
// Verify the directory is a package and get its manifest.
//
package_manifest m (pkg_verify (d));
level4 ([&]{trace << d << ": " << m.name << " " << m.version;});
const auto& n (m.name);
transaction t (db.begin ());
// See if this package already exists in this configuration.
//
if (shared_ptr<package> p = db.find<package> (n))
fail << "package " << n << " already exists in configuration " << c <<
info << "version: " << p->version << ", state: " << p->state;
// Make the package and configuration paths absolute and normalized.
// If the package is inside the configuration, use the relative path.
// This way we can move the configuration around.
//
dir_path ac (c), ad (d);
ac.complete ().normalize ();
ad.complete ().normalize ();
if (ad.sub (ac))
ad = ad.leaf (ac);
// Add the package to the configuration.
//
shared_ptr<package> p (new package {
move (m.name),
move (m.version),
state::unpacked,
optional<path> (), // No archive
false, // Don't purge archive.
move (ad),
purge,
optional<dir_path> () // No output directory yet.
});
db.persist (p);
t.commit ();
return p;
}
static shared_ptr<package>
pkg_unpack (database& db, const dir_path& c, const string& name)
{
tracer trace ("pkg_unpack(pkg)");
transaction t (db.begin ());
shared_ptr<package> p (db.find<package> (name));
if (p == nullptr)
fail << "package " << name << " does not exist in configuration " << c;
if (p->state != state::fetched)
fail << "package " << name << " is " << p->state <<
info << "expected it to be fetched";
level4 ([&]{trace << p->name << " " << p->version;});
assert (p->archive); // Should have archive in the fetched state.
// If the archive path is not absolute, then it must be relative
// to the configuration.
//
path a (p->archive->absolute () ? *p->archive : c / *p->archive);
level4 ([&]{trace << "archive: " << a;});
// Extract the package directory. Currently we always extract it
// into the configuration directory. But once we support package
// cache, this will need to change.
//
// Also, since we must have verified the archive during fetch,
// here we can just assume what the resulting directory will be.
//
dir_path d (c / dir_path (p->name + '-' + p->version.string ()));
if (exists (d))
fail << "package directory " << d << " already exists";
const char* args[] {
"tar",
"-C", c.string ().c_str (), // -C/--directory -- change to directory.
"-xf",
a.string ().c_str (),
nullptr};
if (verb >= 2)
print_process (args);
// What should we do if tar or something after it fails? Cleaning
// up the package directory sounds like the right thing to do.
//
auto dg (
make_exception_guard (
[&d]()
{
if (exists (d))
rm_r (d);
}));
try
{
process pr (args);
// While it is reasonable to assuming the child process issued
// diagnostics, tar, specifically, doesn't mention the archive
// name.
//
if (!pr.wait ())
fail << "unable to extract package archive " << a;
}
catch (const process_error& e)
{
error << "unable to execute " << args[0] << ": " << e.what ();
if (e.child ())
exit (1);
throw failed ();
}
p->src_root = d.leaf (); // For now assuming to be in configuration.
p->purge_src = true;
p->state = state::unpacked;
db.update (p);
t.commit ();
return p;
}
void
pkg_unpack (const pkg_unpack_options& o, cli::scanner& args)
{
tracer trace ("pkg_unpack");
const dir_path& c (o.directory ());
level4 ([&]{trace << "configuration: " << c;});
database db (open (c));
shared_ptr<package> p;
if (o.existing ())
{
// The package directory case.
//
if (!args.more ())
fail << "package directory argument expected" <<
info << "run 'bpkg help pkg-unpack' for more information";
p = pkg_unpack (db, c, dir_path (args.next ()), o.purge ());
}
else
{
// The package name case.
//
if (!args.more ())
fail << "package name argument expected" <<
info << "run 'bpkg help pkg-unpack' for more information";
p = pkg_unpack (db, c, args.next ());
}
if (verb)
text << "unpacked " << p->name << " " << p->version;
}
}
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