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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ * sessionheaderparser.h
+ *
+ * Thu Aug 9 09:06:32 CEST 2012
+ * Copyright 2012 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of Pracro.
+ *
+ * Pracro 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.
+ *
+ * Pracro 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 Pracro; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#ifndef __PRACRO_SESSIONHEADERPARSER_H__
+#define __PRACRO_SESSIONHEADERPARSER_H__
+
+#include "saxparser.h"
+
+/**
+ * Partial session parser.
+ * This class is used to parse only the first tag of a session xml file.
+ * The parser will run about 10 times faster than the one parsing the entire
+ * file (see the SessionParser class) and can be used to find a
+ * patientid/template match.
+ * This class inherits the SAXParser baseclass.
+ * Use the parse() method to run the parser, and collect the result via the
+ * getPatientID() and getTemplate() methods.
+ * If the file does not contain a session, or the file is not a valid xml file,
+ * an Exception is thrown.
+ */
+class SessionHeaderParser : public SAXParser {
+public:
+ /**
+ * Constructor.
+ * @param sessionfile A std::string containing the name of the file to parse.
+ */
+ SessionHeaderParser(std::string sessionfile);
+
+ /**
+ * Destructor.
+ */
+ ~SessionHeaderParser();
+
+ /**
+ * Overloaded parser callback method.
+ */
+ void startTag(std::string name, attributes_t &attr);
+
+ /**
+ * Overloaded parser callback method.
+ */
+ void parseError(const char *buf, size_t len, std::string error, int lineno);
+
+ /**
+ * Get a pointer to the parsed macro.
+ * NOTE: The allocated memory for the macro is owned by the parser, and will be
+ * freed upon parser deletion.
+ * @return A pointer to the macro or NULL on error.
+ */
+ std::string getPatientID();
+ std::string getTemplate();
+
+protected:
+ /**
+ * Overloaded parser callback method.
+ */
+ int readData(char *data, size_t size);
+
+private:
+ int fd;
+
+ bool done;
+
+ std::string patientid;
+ std::string templ;
+
+ std::string file;
+ // Error callback function.
+ void error(const char* fmt, ...);
+};
+
+#endif/*__PRACRO_SESSIONHEADERPARSER_H__*/