--- a
+++ b/src/internfile/mh_execm.h
@@ -0,0 +1,79 @@
+/*
+ * This program 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.
+ *
+ * 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 General Public License for more 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.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#ifndef _MH_EXECM_H_INCLUDED_
+#define _MH_EXECM_H_INCLUDED_
+/* @(#$Id: mh_exec.h,v 1.8 2008-10-06 06:22:46 dockes Exp $ (C) 2004 J.F.Dockes */
+
+#include "mh_exec.h"
+#include "execmd.h"
+
+/**
+ * Turn external document into internal one by executing an external filter.
+ *
+ * The command to execute, and its parameters, are stored in the "params"
+ * which is built in mimehandler.cpp out of data from the mimeconf file.
+ *
+ * This version uses persistent filters which can handle multiple requests
+ * without exiting, with a simple question/response protocol.
+ *
+ * The data is exchanged in TLV fashion, in a way that should be
+ * usable in most script languages. The basic unit has one line with a
+ * data type and a count, followed by the data. A 'message' ends with
+ * one empty line. A possible exchange:
+ *
+ * From recollindex (the message begins before 'Filename'):
+ *
+Filename: 24
+/my/home/mail/somefolderIpath: 2
+22
+<Message ends here: because of the empty line after '22'
+ *
+ * Example answer:
+ *
+Mimetype: 10
+text/plainData: 10
+0123456789
+<Message ends here because of empty line
+ *
+ * Until proven otherwise, this format is both extensible and
+ * reasonably easy to parse. While it's more destined for python or
+ * perl on the script side, it should even be sort of usable from the shell
+ * (ie: use dd to read the counted data). Most alternatives would need data
+ * encoding in some cases.
+ */
+class MimeHandlerExecMultiple : public MimeHandlerExec {
+ /////////
+ // Things not reset by "clear()", additionally to those in MimeHandlerExec
+ ExecCmd m_cmd;
+ /////// End un-cleared stuff.
+
+ public:
+ MimeHandlerExecMultiple(const string& mt)
+ : MimeHandlerExec(mt)
+ {}
+ // No resources to clean up, the ExecCmd destructor does it.
+ virtual ~MimeHandlerExecMultiple() {}
+ virtual bool next_document();
+ virtual void clear() {
+ MimeHandlerExec::clear();
+ }
+private:
+ bool startCmd();
+ bool readDataElement(string& name);
+};
+
+#endif /* _MH_EXECM_H_INCLUDED_ */