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- /*
- Copyright (C) 2017 Timo Wischer
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- This program 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 Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- */
-
- #include <fstream>
- #include "JackInternalSessionLoader.h"
- #include "JackLockedEngine.h"
-
-
- namespace Jack
- {
-
- JackInternalSessionLoader::JackInternalSessionLoader(JackServer* const server) :
- fServer(server)
- {
- }
-
- int JackInternalSessionLoader::Load(const char* file)
- {
- std::ifstream infile(file);
-
- if (!infile.is_open()) {
- jack_error("JACK internal session file %s does not exist or cannot be opened for reading.", file);
- return -1;
- }
-
- std::string line;
- int linenr = -1;
- while (std::getline(infile, line))
- {
- linenr++;
-
- std::istringstream iss(line);
-
- std::string command;
- if ( !(iss >> command) ) {
- /* ignoring empty line or line only filled with spaces */
- continue;
- }
-
- /* convert command to lower case to accept any case of the letters in the command */
- std::transform(command.begin(), command.end(), command.begin(), ::tolower);
-
- if ( (command.compare("c") == 0) || (command.compare("con") == 0) ) {
- ConnectPorts(iss, linenr);
- } else if ( (command.compare("l") == 0) || (command.compare("load") == 0) ) {
- LoadClient(iss, linenr);
- #if 0
- /* NOTE: c++11 only */
- } else if (command.front() == '#') {
- #else
- } else if (command[0] == '#') {
- #endif
- /* ignoring commented lines.
- * The # can be followed by non spaces.
- * Therefore only compare the first letter of the command.
- */
- } else {
- jack_error("JACK internal session file %s line %u contains unknown command '%s'. Ignoring the line!", file, linenr, line.c_str());
- }
- }
-
- return 0;
- }
-
- void JackInternalSessionLoader::LoadClient(std::istringstream& iss, const int linenr)
- {
- std::string client_name;
- if ( !(iss >> client_name) ) {
- jack_error("Cannot read client name from internal session file line %u '%s'. Ignoring the line!", linenr, iss.str().c_str());
- return;
- }
-
- std::string lib_name;
- if ( !(iss >> lib_name) ) {
- jack_error("Cannot read client library name from internal session file line %u '%s'. Ignoring the line!", linenr, iss.str().c_str());
- return;
- }
-
- /* get the rest of the line */
- std::string parameters;
- if ( std::getline(iss, parameters) ) {
- /* remove the leading spaces */
- const std::size_t start = parameters.find_first_not_of(" \t");
- if (start == std::string::npos) {
- /* Parameters containing only spaces.
- * Use empty parameter string.
- */
- parameters = "";
- } else {
- parameters = parameters.substr(start);
- }
- }
-
-
- /* jackctl_server_load_internal() can not be used
- * because it calls jack_internal_initialize()
- * instead of jack_initialize()
- */
- int status = 0;
- int refnum = 0;
- if (fServer->InternalClientLoad1(client_name.c_str(), lib_name.c_str(), parameters.c_str(), (JackLoadName|JackUseExactName|JackLoadInit), &refnum, -1, &status) < 0) {
- /* Due to the JackUseExactName option JackNameNotUnique will always handled as a failure.
- * See JackEngine::ClientCheck().
- */
- if (status & JackNameNotUnique) {
- jack_error("Internal client name `%s' not unique", client_name.c_str());
- }
- /* An error message for JackVersionError will already
- * be printed by JackInternalClient::Open().
- * Therefore no need to handle it here.
- */
-
- jack_error("Cannot load client %s from internal session file line %u. Ignoring the line!", client_name.c_str(), linenr);
- return;
- }
-
- /* status has not to be checked for JackFailure
- * because JackServer::InternalClientLoad1() will return a value < 0
- * and this is handled by the previous if-clause.
- */
-
- jack_info("Internal client %s successfully loaded", client_name.c_str());
- }
-
- void JackInternalSessionLoader::ConnectPorts(std::istringstream& iss, const int linenr)
- {
- std::string src_port;
- if ( !(iss >> src_port) ) {
- jack_error("Cannot read first port from internal session file line %u '%s'. Ignoring the line!",
- linenr, iss.str().c_str());
- return;
- }
-
- std::string dst_port;
- if ( !(iss >> dst_port) ) {
- jack_error("Cannot read second port from internal session file line %u '%s'. Ignoring the line!",
- linenr, iss.str().c_str());
- return;
- }
-
- /* use the client reference of the source port */
- const jack_port_id_t src_port_index = fServer->GetGraphManager()->GetPort(src_port.c_str());
- if (src_port_index >= NO_PORT) {
- jack_error("Source port %s does not exist! Ignoring internal session file line %u '%s'.",
- src_port.c_str(), linenr, iss.str().c_str());
- return;
- }
- const int src_refnum = fServer->GetGraphManager()->GetOutputRefNum(src_port_index);
-
- if (fServer->GetEngine()->PortConnect(src_refnum, src_port.c_str(), dst_port.c_str()) < 0) {
- jack_error("Cannot connect ports of internal session file line %u '%s'.\n"
- "Possibly the destination port does not exist. Ignoring the line!",
- linenr, iss.str().c_str());
- return;
- }
-
- jack_info("Ports connected: %s -> %s", src_port.c_str(), dst_port.c_str());
- }
-
- }
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