diff --git a/src/output/xpip.cpp b/src/output/xpip.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..e9a836e2ec215676d8917fa098c4b65acc831f1c
--- /dev/null
+++ b/src/output/xpip.cpp
@@ -0,0 +1,150 @@
+/**
+ * \file output/xpip.cpp
+ * \date 13/4/2017
+ * \author Olivier Langella
+ * \brief XPIP writer
+ */
+
+/*******************************************************************************
+* Copyright (c) 2017 Olivier Langella <olivier.langella@u-psud.fr>.
+*
+* This file is part of XTPcpp.
+*
+* XTPcpp 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 3 of the License, or
+* (at your option) any later version.
+*
+* XTPcpp 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 XTPcpp. If not, see <http://www.gnu.org/licenses/>.
+*
+* Contributors:
+* Olivier Langella <olivier.langella@u-psud.fr> - initial API and implementation
+******************************************************************************/
+
+#include "xpip.h"
+#include <pappsomspp/pappsoexception.h>
+
+Xpip::Xpip(const QString & out_filename)
+{
+ //_p_digestion_pipeline = p_digestion_pipeline;
+
+ //_mzidentml = "http://psidev.info/psi/pi/mzIdentML/1.1";
+ QString complete_out_filename = out_filename;
+ _output_file = new QFile(complete_out_filename);
+
+ if (_output_file->open(QIODevice::WriteOnly))
+ {
+ _output_stream = new QXmlStreamWriter();
+ _output_stream->setDevice(_output_file);
+ } else
+ {
+ throw pappso::PappsoException(QObject::tr("error : cannot open the XPIP output file : %1\n").arg(out_filename));
+ }
+
+ _output_stream->setAutoFormatting(true);
+ _output_stream->writeStartDocument("1.0");
+
+
+}
+
+Xpip::~Xpip()
+{
+ delete _output_file;
+ delete _output_stream;
+}
+
+void Xpip::close() {
+ _output_stream->writeEndDocument();
+ _output_file->close();
+}
+
+void Xpip::write(ProjectSp sp_project) {
+
+ _sp_project = sp_project;
+ if (_sp_project.get() == nullptr) {
+ throw pappso::PappsoException(QObject::tr("Error writing XPIP :\n project is empty"));
+ }
+
+//<xtandem_pipeline version="3.3.5">
+ _output_stream->writeStartElement("xpip");
+ _output_stream->writeAttribute("version","4.0");
+ //_output_stream->writeAttribute("creationDate", QDateTime::currentDateTime().toString( Qt::ISODate));
+ _output_stream->writeNamespace("http://www.w3.org/2001/XMLSchema-instance","xsi");
+ //_output_stream->writeNamespace("http://www.w3.org/2001/XMLSchema-instance","xsi");
+ _output_stream->writeAttribute("xmlns","http://pappso.inra.fr/xsd/xpip/4.0");
+ //xsi:schemaLocation="http://psidev.info/psi/pi/mzIdentML/1.1 http://www.psidev.info/files/mzIdentML1.1.0.xsd"
+ _output_stream->writeAttribute("http://www.w3.org/2001/XMLSchema-instance","schemaLocation","http://pappso.inra.fr/xsd/xpip/4.0 http://pappso.inra.fr/xsd/xpip-4.0.xsd");
+
+
+ //<information Data_Type="combi" match_number="6807"/>
+ // _output_stream->writeStartElement("information");
+ // _output_stream->writeAttribute("Data_Type","combi");
+ // _output_stream->writeEndElement();
+
+ //<filter_params pep_evalue="0.01" prot_evalue="-2.0" pep_number="2" filter_to_all="false" database_filter="/gorgone/pappso/jouy/raw/2013_Orbitrap/2013_07_04_Chanat/contaminants_standarts.fasta"/>
+ _output_stream->writeStartElement("filter_params");
+ _output_stream->writeAttribute("pep_evalue","combi");
+ _output_stream->writeAttribute("prot_evalue","combi");
+ _output_stream->writeAttribute("pep_number","combi");
+ _output_stream->writeAttribute("filter_to_all","combi");
+ _output_stream->writeEndElement();
+
+ <identifications>
+ <identification>
+ <modifs_list_mass>
+ <modifs_mass modvalue="-18.01056"/>
+ <modifs_mass modvalue="-17.02655"/>
+ <modifs_mass modvalue="15.99491"/>
+ <modifs_mass modvalue="42.01057"/>
+ <modifs_mass modvalue="42.01056"/>
+ <modifs_mass modvalue="57.02146"/>
+ </modifs_list_mass>
+ <samples>
+ <sample value="20120906_balliau_extract_1_A01_urnb-1"/>
+ <sample value="20120906_balliau_extract_1_A02_urzb-1"/>
+ </samples>
+ //<masschroq>
+ // <rawdata><!-- time_values_dir="directory" to read retention time corrections-->
+ _output_stream->writeStartElement("rawdata");
+ _output_stream->writeComment("time_values_dir=\"directory\" to read retention time corrections");
+
+ std::vector<MsRunSp> msrun_list = _sp_project.get()->getMsRunStore().getMsRunList();
+ for (MsRunSp & msrun : msrun_list) {
+
+ //<data_file id="samp0" format="mzxml" path="bsa1.mzXML" type="centroid" />
+ _output_stream->writeStartElement("data_file");
+ _output_stream->writeAttribute("id",msrun.get()->getXmlId());
+ if(msrun.get()->getMzFormat() == MzFormat::mzXML) {
+ _output_stream->writeAttribute("format","mzxml");
+ }
+ _output_stream->writeAttribute("path",msrun.get()->getFilename());
+ _output_stream->writeAttribute("type","centroid");
+ // <data_file id="samp1" format="mzxml" path="bsa2.mzXML" type="profile" />
+ _output_stream->writeEndElement();
+ }
+ // <data_file id="samp2" format="mzml" path="/home/user/bsa3.mzml" type="profile" />
+//<data_file id="samp3" format="mzml" path="/home/user/bsa4.mzml" type="profile" />
+ // _output_stream.writeEndElement();
+ // </rawdata>
+ _output_stream->writeEndElement();
+
+
+ writeGroups();
+ writeProteinList();
+ writePeptideList();
+ writeIsotopeLabelList();
+ writeAlignments();
+ writeQuantificationMethods();
+ _output_stream->writeStartElement("quantification");
+ writeQuantificationResults();
+ writeQuantificationTraces();
+ writeQuantify();
+ _output_stream->writeEndElement();
+}
+
diff --git a/src/output/xpip.h b/src/output/xpip.h
new file mode 100644
index 0000000000000000000000000000000000000000..2e2f190c55a9c5232a55f328295c6516ce8c0717
--- /dev/null
+++ b/src/output/xpip.h
@@ -0,0 +1,54 @@
+/**
+ * \file output/xpip.h
+ * \date 13/4/2017
+ * \author Olivier Langella
+ * \brief XPIP writer
+ */
+
+/*******************************************************************************
+* Copyright (c) 2017 Olivier Langella <olivier.langella@u-psud.fr>.
+*
+* This file is part of XTPcpp.
+*
+* XTPcpp 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 3 of the License, or
+* (at your option) any later version.
+*
+* XTPcpp 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 XTPcpp. If not, see <http://www.gnu.org/licenses/>.
+*
+* Contributors:
+* Olivier Langella <olivier.langella@u-psud.fr> - initial API and implementation
+******************************************************************************/
+
+#ifndef XPIP_H
+#define XPIP_H
+
+#include <QXmlStreamWriter>
+#include <QFile>
+#include <QString>
+#include "../core/project.h"
+
+class Xpip
+{
+ public:
+ Xpip(const QString & out_filename);
+ ~Xpip();
+
+ void write(ProjectSp sp_project);
+ void close();
+
+private :
+ QFile * _output_file;
+ QXmlStreamWriter * _output_stream;
+ ProjectSp _sp_project;
+
+};
+
+#endif // XPIP_H