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Diffstat (limited to 'src/libs/serialisation/Serialiser.cpp')
-rw-r--r-- | src/libs/serialisation/Serialiser.cpp | 434 |
1 files changed, 434 insertions, 0 deletions
diff --git a/src/libs/serialisation/Serialiser.cpp b/src/libs/serialisation/Serialiser.cpp new file mode 100644 index 00000000..15b7f753 --- /dev/null +++ b/src/libs/serialisation/Serialiser.cpp @@ -0,0 +1,434 @@ +/* This file is part of Ingen. + * Copyright (C) 2007 Dave Robillard <http://drobilla.net> + * + * Ingen 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. + * + * Ingen 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 details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <algorithm> +#include <cassert> +#include <cmath> +#include <cstdlib> // atof +#include <cstring> +#include <fstream> +#include <iostream> +#include <locale.h> +#include <stdexcept> +#include <string> +#include <utility> // pair, make_pair +#include <vector> +#include <raul/Atom.hpp> +#include <raul/AtomRedland.hpp> +#include <raul/Path.hpp> +#include <raul/RDFModel.hpp> +#include <raul/RDFNode.hpp> +#include <raul/RDFWorld.hpp> +#include <raul/TableImpl.hpp> +#include "interface/EngineInterface.hpp" +#include "interface/Plugin.hpp" +#include "interface/Patch.hpp" +#include "interface/Node.hpp" +#include "interface/Port.hpp" +#include "interface/Connection.hpp" +#include "Serialiser.hpp" + +using namespace std; +using namespace Raul; +using namespace Raul::RDF; +using namespace Ingen; +using namespace Ingen::Shared; + +namespace Ingen { +namespace Serialisation { + + +Serialiser::Serialiser(Raul::RDF::World& world) + : _world(world) +{ +} + +void +Serialiser::to_file(SharedPtr<GraphObject> object, const string& filename) +{ + _root_object = object; + start_to_filename(filename); + serialize(object); + finish(); +} + + +string +Serialiser::to_string(SharedPtr<GraphObject> object) +{ + _root_object = object; + start_to_string(); + serialize(object); + return finish(); +} + + +/** Begin a serialization to a file. + * + * This must be called before any serializing methods. + */ +void +Serialiser::start_to_filename(const string& filename) +{ + setlocale(LC_NUMERIC, "C"); + + _base_uri = "file://" + filename; + _model = new RDF::Model(_world); + _mode = TO_FILE; +} + + +/** Begin a serialization to a string. + * + * This must be called before any serializing methods. + * + * The results of the serialization will be returned by the finish() method after + * the desired objects have been serialized. + */ +void +Serialiser::start_to_string() +{ + setlocale(LC_NUMERIC, "C"); + + _base_uri = ""; + _model = new RDF::Model(_world); + _mode = TO_STRING; +} + + +/** Finish a serialization. + * + * If this was a serialization to a string, the serialization output + * will be returned, otherwise the empty string is returned. + */ +string +Serialiser::finish() +{ + string ret = ""; + + if (_mode == TO_FILE) + _model->serialize_to_file(_base_uri); + else + ret = _model->serialize_to_string(); + + _base_uri = ""; + _node_map.clear(); + + return ret; +} + + +/** Convert a path to an RDF blank node ID for serializing. + */ +RDF::Node +Serialiser::path_to_node_id(const Path& path) +{ + assert(_model); + /*string ret = path.substr(1); + + for (size_t i=0; i < ret.length(); ++i) { + if (ret[i] == '/') + ret[i] = '_'; + } + + return RDF::Node(Node::BLANK, ret); + */ + + NodeMap::iterator i = _node_map.find(path); + if (i != _node_map.end()) { + assert(i->second); + assert(i->second.get_node()); + return i->second; + } else { + RDF::Node id = _world.blank_id(); + assert(id); + _node_map[path] = id; + return id; + } +} + + +#if 0 +/** Searches for the filename passed in the path, returning the full + * path of the file, or the empty string if not found. + * + * This function tries to be as friendly a black box as possible - if the path + * passed is an absolute path and the file is found there, it will return + * that path, etc. + * + * additional_path is a list (colon delimeted as usual) of additional + * directories to look in. ie the directory the parent patch resides in would + * be a good idea to pass as additional_path, in the case of a subpatch. + */ +string +Serialiser::find_file(const string& filename, const string& additional_path) +{ + string search_path = additional_path + ":" + _patch_search_path; + + // Try to open the raw filename first + std::ifstream is(filename.c_str(), std::ios::in); + if (is.good()) { + is.close(); + return filename; + } + + string directory; + string full_patch_path = ""; + + while (search_path != "") { + directory = search_path.substr(0, search_path.find(':')); + if (search_path.find(':') != string::npos) + search_path = search_path.substr(search_path.find(':')+1); + else + search_path = ""; + + full_patch_path = directory +"/"+ filename; + + std::ifstream is; + is.open(full_patch_path.c_str(), std::ios::in); + + if (is.good()) { + is.close(); + return full_patch_path; + } else { + cerr << "[Serialiser] Could not find patch file " << full_patch_path << endl; + } + } + + return ""; +} +#endif + +void +Serialiser::serialize(SharedPtr<GraphObject> object) throw (std::logic_error) +{ + if (!_model) + throw std::logic_error("serialize called without serialization in progress"); + + SharedPtr<Shared::Patch> patch = PtrCast<Shared::Patch>(object); + if (patch) { + serialize_patch(patch); + return; + } + + SharedPtr<Shared::Node> node = PtrCast<Shared::Node>(object); + if (node) { + serialize_node(node, path_to_node_id(node->path())); + return; + } + + SharedPtr<Shared::Port> port = PtrCast<Shared::Port>(object); + if (port) { + serialize_port(port.get(), path_to_node_id(port->path())); + return; + } + + cerr << "[Serialiser] WARNING: Unsupported object type, " + << object->path() << " not serialized." << endl; +} + + +RDF::Node +Serialiser::patch_path_to_rdf_id(const Path& path) +{ + if (path == _root_object->path()) { + return RDF::Node(_model->world(), RDF::Node::RESOURCE, _base_uri); + } else { + assert(path.length() > _root_object->path().length()); + return RDF::Node(_model->world(), RDF::Node::RESOURCE, + _base_uri + string("#") + path.substr(_root_object->path().length())); + } +} + + +void +Serialiser::serialize_patch(SharedPtr<Shared::Patch> patch) +{ + assert(_model); + + const RDF::Node patch_id = patch_path_to_rdf_id(patch->path()); + + _model->add_statement( + patch_id, + "rdf:type", + RDF::Node(_model->world(), RDF::Node::RESOURCE, "http://drobilla.net/ns/ingen#Patch")); + + if (patch->path().name().length() > 0) { + _model->add_statement( + patch_id, "ingen:name", + Atom(patch->path().name().c_str())); + } + + _model->add_statement( + patch_id, + "ingen:polyphony", + Atom((int)patch->internal_polyphony())); + + _model->add_statement( + patch_id, + "ingen:enabled", + Atom(patch->enabled())); + + for (GraphObject::MetadataMap::const_iterator m = patch->metadata().begin(); + m != patch->metadata().end(); ++m) { + if (m->first.find(":") != string::npos) { + _model->add_statement( + patch_id, + m->first.c_str(), + m->second); + } + } + + for (GraphObject::const_iterator n = patch->children_begin(); n != patch->children_end(); ++n) { + SharedPtr<Shared::Patch> patch = PtrCast<Shared::Patch>(n->second); + SharedPtr<Shared::Node> node = PtrCast<Shared::Node>(n->second); + if (patch) { + _model->add_statement(patch_id, "ingen:node", patch_path_to_rdf_id(patch->path())); + serialize_patch(patch); + } else if (node) { + const RDF::Node node_id = path_to_node_id(n->second->path()); + _model->add_statement(patch_id, "ingen:node", node_id); + serialize_node(node, node_id); + } + } + + for (uint32_t i=0; i < patch->num_ports(); ++i) { + Port* p = patch->port(i); + const RDF::Node port_id = path_to_node_id(p->path()); + _model->add_statement(patch_id, "ingen:port", port_id); + serialize_port(p, port_id); + } + + for (Shared::Patch::Connections::const_iterator c = patch->connections().begin(); + c != patch->connections().end(); ++c) { + serialize_connection(*c); + } +} + + +void +Serialiser::serialize_plugin(SharedPtr<Shared::Plugin> plugin) +{ + assert(_model); + + const RDF::Node plugin_id = RDF::Node(_model->world(), RDF::Node::RESOURCE, plugin->uri()); + + _model->add_statement( + plugin_id, + "rdf:type", + RDF::Node(_model->world(), RDF::Node::RESOURCE, plugin->type_uri())); +} + + +void +Serialiser::serialize_node(SharedPtr<Shared::Node> node, const RDF::Node& node_id) +{ + const RDF::Node plugin_id + = RDF::Node(_model->world(), RDF::Node::RESOURCE, node->plugin()->uri()); + + _model->add_statement( + node_id, + "rdf:type", + RDF::Node(_model->world(), RDF::Node::RESOURCE, "ingen:Node")); + + _model->add_statement( + node_id, + "ingen:name", + node->path().name()); + + _model->add_statement( + node_id, + "ingen:plugin", + plugin_id); + + _model->add_statement( + node_id, + "ingen:polyphonic", + node->polyphonic()); + + //serialize_plugin(node->plugin()); + + for (uint32_t i=0; i < node->num_ports(); ++i) { + Port* p = node->port(i); + assert(p); + const RDF::Node port_id = path_to_node_id(p->path()); + serialize_port(p, port_id); + _model->add_statement(node_id, "ingen:port", port_id); + } + + for (GraphObject::MetadataMap::const_iterator m = node->metadata().begin(); + m != node->metadata().end(); ++m) { + if (m->first.find(":") != string::npos) { + _model->add_statement( + node_id, + m->first, + m->second); + } + } +} + +/** Writes a port subject with various information only if there are some + * predicate/object pairs to go with it (eg if the port has metadata, or a value, or..). + * Audio output ports with no metadata will not be written, for example. + */ +void +Serialiser::serialize_port(const Port* port, const RDF::Node& port_id) +{ + if (port->is_input()) + _model->add_statement(port_id, "rdf:type", + RDF::Node(_model->world(), RDF::Node::RESOURCE, "ingen:InputPort")); + else + _model->add_statement(port_id, "rdf:type", + RDF::Node(_model->world(), RDF::Node::RESOURCE, "ingen:OutputPort")); + + _model->add_statement(port_id, "ingen:name", Atom(port->path().name().c_str())); + + _model->add_statement(port_id, "rdf:type", + RDF::Node(_model->world(), RDF::Node::RESOURCE, port->type().uri())); + + if (port->type() == DataType::CONTROL && port->is_input()) + _model->add_statement(port_id, "ingen:value", port->value()); + + if (port->metadata().size() > 0) { + for (GraphObject::MetadataMap::const_iterator m = port->metadata().begin(); + m != port->metadata().end(); ++m) { + if (m->first.find(":") != string::npos) { + _model->add_statement( + port_id, + m->first, + m->second); + } + } + } +} + + +void +Serialiser::serialize_connection(SharedPtr<Connection> connection) throw (std::logic_error) +{ + if (!_model) + throw std::logic_error("serialize_connection called without serialization in progress"); + + const RDF::Node src_node = path_to_node_id(connection->src_port_path()); + const RDF::Node dst_node = path_to_node_id(connection->dst_port_path()); + + _model->add_statement(dst_node, "ingen:connectedTo", src_node); +} + + +} // namespace Serialisation +} // namespace Ingen |