Move code to find CPLs in directories out of DCP-o-matic.

This adds find_and_resolve_cpls().

3 files changed, 130 insertions, 0 deletions

diff --git a/src/search.cc b/src/search.cc
new file mode 100644
index 00000000..dc0f92a0
--- /dev/null
+++ b/src/search.cc
@@ -0,0 +1,88 @@
+/*
+    Copyright (C) 2022 Carl Hetherington <cth@carlh.net>
+
+    This file is part of libdcp.
+
+    libdcp is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    libdcp is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with libdcp.  If not, see <http://www.gnu.org/licenses/>.
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of portions of this program with the
+    OpenSSL library under certain conditions as described in each
+    individual source file, and distribute linked combinations
+    including the two.
+
+    You must obey the GNU General Public License in all respects
+    for all of the code used other than OpenSSL.  If you modify
+    file(s) with this exception, you may extend this exception to your
+    version of the file(s), but you are not obligated to do so.  If you
+    do not wish to do so, delete this exception statement from your
+    version.  If you delete this exception statement from all source
+    files in the program, then also delete it here.
+*/
+
+
+#include "dcp.h"
+#include "decrypted_kdm.h"
+#include "exceptions.h"
+#include "search.h"
+
+
+using std::make_shared;
+using std::shared_ptr;
+using std::vector;
+using namespace dcp;
+
+
+/** Find all the CPLs in some directories and resolve any assets that are found */
+vector<shared_ptr<dcp::CPL>>
+dcp::find_and_resolve_cpls (vector<boost::filesystem::path> const& directories, bool tolerant)
+{
+	vector<shared_ptr<dcp::CPL>> cpls;
+
+	/** We accept and ignore some warnings / errors but everything else is bad */
+	vector<dcp::VerificationNote::Code> const ignore = {
+		dcp::VerificationNote::Code::EMPTY_ASSET_PATH,
+		dcp::VerificationNote::Code::EXTERNAL_ASSET,
+		dcp::VerificationNote::Code::THREED_ASSET_MARKED_AS_TWOD,
+	};
+
+	vector<shared_ptr<dcp::DCP>> dcps;
+	for (auto i: directories) {
+		auto dcp = make_shared<dcp::DCP>(i);
+		vector<dcp::VerificationNote> notes;
+		dcp->read (&notes, true);
+		if (!tolerant) {
+			for (auto j: notes) {
+				if (std::find(ignore.begin(), ignore.end(), j.code()) == ignore.end()) {
+					boost::throw_exception(dcp::ReadError(dcp::note_to_string(j)));
+				}
+			}
+		}
+		dcps.push_back (dcp);
+		for (auto i: dcp->cpls()) {
+			cpls.push_back (i);
+		}
+	}
+
+	for (auto i: dcps) {
+		for (auto j: dcps) {
+			if (i != j) {
+				i->resolve_refs(j->assets());
+			}
+		}
+	}
+
+	return cpls;
+}
+
diff --git a/src/search.h b/src/search.h
new file mode 100644
index 00000000..c7199d44
--- /dev/null
+++ b/src/search.h
@@ -0,0 +1,40 @@
+/*
+    Copyright (C) 2022 Carl Hetherington <cth@carlh.net>
+
+    This file is part of libdcp.
+
+    libdcp is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    libdcp is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with libdcp.  If not, see <http://www.gnu.org/licenses/>.
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of portions of this program with the
+    OpenSSL library under certain conditions as described in each
+    individual source file, and distribute linked combinations
+    including the two.
+
+    You must obey the GNU General Public License in all respects
+    for all of the code used other than OpenSSL.  If you modify
+    file(s) with this exception, you may extend this exception to your
+    version of the file(s), but you are not obligated to do so.  If you
+    do not wish to do so, delete this exception statement from your
+    version.  If you delete this exception statement from all source
+    files in the program, then also delete it here.
+*/
+
+
+namespace dcp {
+
+extern std::vector<std::shared_ptr<dcp::CPL>> find_and_resolve_cpls (std::vector<boost::filesystem::path> const& directories, bool tolerant);
+
+}
+
diff --git a/src/wscript b/src/wscript
index ecd434d6..da4d0d1e 100644
--- a/src/wscript
+++ b/src/wscript
@@ -98,6 +98,7 @@ def build(bld):
              ref.cc
              rgb_xyz.cc
              s_gamut3_transfer_function.cc
+             search.cc
              smpte_load_font_node.cc
              smpte_subtitle_asset.cc
              sound_asset.cc
@@ -191,6 +192,7 @@ def build(bld):
               reel_subtitle_asset.h
               ref.h
               s_gamut3_transfer_function.h
+              search.h
               smpte_load_font_node.h
               smpte_subtitle_asset.h
               sound_frame.h