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169 lines
5.9 KiB
169 lines
5.9 KiB
/*
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Generic XML Transformation Filter Processing class.
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-------------------
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Copyright:
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(C) 2005 by Gary Cramblitt <garycramblitt@comcast.net>
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-------------------
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Original author: Gary Cramblitt <garycramblitt@comcast.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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******************************************************************************/
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#ifndef _XMLTRANSFORMERPROC_H_
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#define _XMLTRANSFORMERPROC_H_
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// TQt includes.
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#include <tqobject.h>
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#include <tqstringlist.h>
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// KTTS includes.
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#include "filterproc.h"
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class TDEProcess;
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class XmlTransformerProc : virtual public KttsFilterProc
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{
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Q_OBJECT
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public:
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/**
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* Constructor.
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*/
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XmlTransformerProc( TQObject *parent, const char *name, const TQStringList &args = TQStringList() );
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/**
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* Destructor.
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*/
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virtual ~XmlTransformerProc();
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/**
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* Initialize the filter.
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* @param config Settings object.
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* @param configGroup Settings Group.
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* @return False if filter is not ready to filter.
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*
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* Note: The parameters are for reading from kttsdrc file. Plugins may wish to maintain
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* separate configuration files of their own.
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*/
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virtual bool init(TDEConfig *config, const TQString &configGroup);
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/**
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* Returns True if the plugin supports asynchronous processing,
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* i.e., supports asyncConvert method.
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* @return True if this plugin supports asynchronous processing.
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*
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* If the plugin returns True, it must also implement @ref getState .
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* It must also emit @ref filteringFinished when filtering is completed.
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* If the plugin returns True, it must also implement @ref stopFiltering .
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* It must also emit @ref filteringStopped when filtering has been stopped.
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*/
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virtual bool supportsAsync();
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/**
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* Convert input, returning output.
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* @param inputText Input text.
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* @param talkerCode TalkerCode structure for the talker that KTTSD intends to
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* use for synthing the text. Useful for extracting hints about
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* how to filter the text. For example, languageCode.
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* @param appId The DCOP appId of the application that queued the text.
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* Also useful for hints about how to do the filtering.
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*/
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virtual TQString convert(const TQString& inputText, TalkerCode* talkerCode, const TQCString& appId);
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/**
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* Convert input. Runs asynchronously.
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* @param inputText Input text.
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* @param talkerCode TalkerCode structure for the talker that KTTSD intends to
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* use for synthing the text. Useful for extracting hints about
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* how to filter the text. For example, languageCode.
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* @param appId The DCOP appId of the application that queued the text.
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* Also useful for hints about how to do the filtering.
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* @return False if the filter cannot perform the conversion.
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*
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* When conversion is completed, emits signal @ref filteringFinished. Calling
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* program may then call @ref getOutput to retrieve converted text. Calling
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* program must call @ref ackFinished to acknowledge the conversion.
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*/
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virtual bool asyncConvert(const TQString& inputText, TalkerCode* talkerCode, const TQCString& appId);
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/**
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* Waits for a previous call to asyncConvert to finish.
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*/
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virtual void waitForFinished();
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/**
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* Returns the state of the Filter.
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*/
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virtual int getState();
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/**
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* Returns the filtered output.
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*/
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virtual TQString getOutput();
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/**
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* Acknowledges the finished filtering.
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*/
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virtual void ackFinished();
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/**
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* Stops filtering. The filteringStopped signal will emit when filtering
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* has in fact stopped and state returns to fsIdle;
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*/
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virtual void stopFiltering();
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/**
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* Did this filter do anything? If the filter returns the input as output
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* unmolested, it should return False when this method is called.
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*/
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virtual bool wasModified();
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private slots:
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void slotProcessExited(TDEProcess*);
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void slotReceivedStdout(TDEProcess* proc, char* buffer, int buflen);
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void slotReceivedStderr(TDEProcess* proc, char* buffer, int buflen);
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private:
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// Process output when xsltproc exits.
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void processOutput();
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// If not empty, only apply to text queued by an applications containing one of these strings.
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TQStringList m_appIdList;
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// If not empty, only apply to XML that has the specified root element.
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TQStringList m_rootElementList;
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// If not empty, only apply to XML that has the specified DOCTYPE spec.
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TQStringList m_doctypeList;
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// The text that is being filtered.
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TQString m_text;
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// Processing state.
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int m_state;
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// xsltproc process.
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TDEProcess* m_xsltProc;
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// Input and Output filenames.
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TQString m_inFilename;
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TQString m_outFilename;
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// User's name for the filter.
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TQString m_UserFilterName;
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// XSLT file.
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TQString m_xsltFilePath;
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// Path to xsltproc processor.
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TQString m_xsltprocPath;
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// Did this filter modify the text?
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bool m_wasModified;
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};
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#endif // _XMLTRANSFORMERPROC_H_
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