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authorDimitri van Heesch <dimitri@stack.nl>2001-12-29 18:30:48 (GMT)
committerDimitri van Heesch <dimitri@stack.nl>2001-12-29 18:30:48 (GMT)
commitad53b7bebd3042598e5a11b1f3ef29468815138b (patch)
tree048517043e4c90dcc686bc038b480825fe32886c /addon/doxmlparser/src/basehandler.h
parent7e4d434c3650bb9f7e5f460b1dbf6fed8be04a5f (diff)
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Release-1.2.13
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diff --git a/addon/doxmlparser/src/basehandler.h b/addon/doxmlparser/src/basehandler.h
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+/******************************************************************************
+ *
+ * $Id$
+ *
+ *
+ * Copyright (C) 1997-2001 by Dimitri van Heesch.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation under the terms of the GNU General Public License is hereby
+ * granted. No representations are made about the suitability of this software
+ * for any purpose. It is provided "as is" without express or implied warranty.
+ * See the GNU General Public License for more details.
+ *
+ */
+
+#ifndef _BASEHANDLER_H
+#define _BASEHANDLER_H
+
+#include <qxml.h>
+#include <qdict.h>
+#include <qstring.h>
+
+class IBaseHandler
+{
+ public:
+ virtual void setDelegate(QXmlDefaultHandler *delegate) = 0;
+ virtual QXmlDefaultHandler *delegate() const = 0;
+};
+
+class IFallBackHandler
+{
+ public:
+ virtual bool handleStartElement(const QString & name,
+ const QXmlAttributes & attrib) = 0;
+ virtual bool handleEndElement(const QString &name) = 0;
+};
+
+template<class T> class ElementMapper
+{
+ class StartElementHandler
+ {
+ typedef void (T::*Handler)(const QXmlAttributes &attrib);
+ public:
+ StartElementHandler() : m_parent(0) {}
+ StartElementHandler(T *parent, Handler h)
+ : m_parent(parent), m_handler(h) {}
+ void operator()(const QXmlAttributes &attrib)
+ { if (m_parent) (m_parent->*m_handler)(attrib); }
+ private:
+ T *m_parent;
+ Handler m_handler;
+ };
+
+ class EndElementHandler
+ {
+ typedef void (T::*Handler)();
+ public:
+ EndElementHandler() : m_parent(0) {}
+ EndElementHandler(T *parent, Handler h)
+ : m_parent(parent), m_handler(h) {}
+ void operator()()
+ { if (m_parent) (m_parent->*m_handler)(); }
+ private:
+ T *m_parent;
+ Handler m_handler;
+ };
+
+ typedef StartElementHandler<T> StartElementHandlerT;
+ typedef EndElementHandler<T> EndElementHandlerT;
+
+ public:
+ ElementMapper() : m_startHandlers(67), m_endHandlers(67)
+ {
+ m_startHandlers.setAutoDelete(TRUE);
+ m_endHandlers.setAutoDelete(TRUE);
+ }
+ virtual ~ElementMapper()
+ {
+ }
+
+ void addStartHandler(const char *key)
+ {
+ m_startHandlers.insert(key,new StartElementHandlerT);
+ }
+
+ void addStartHandler(const char *key, T *obj, void (T::*handler)(const QXmlAttributes &))
+ {
+ m_startHandlers.insert(key,new StartElementHandlerT(obj,handler));
+ }
+
+ void addEndHandler(const char *key)
+ {
+ m_endHandlers.insert(key,new EndElementHandlerT);
+ }
+
+ void addEndHandler(const char *key, T *obj, void (T::*handler)())
+ {
+ m_endHandlers.insert(key,new EndElementHandlerT(obj,handler));
+ }
+
+
+ protected:
+ QDict<StartElementHandlerT> m_startHandlers;
+ QDict<EndElementHandlerT> m_endHandlers;
+};
+
+template<class T> class BaseHandler : public IBaseHandler,
+ public QXmlDefaultHandler,
+ public ElementMapper<T>
+{
+ public:
+ BaseHandler() : m_delegateHandler(0), m_fallBackHandler(0)
+ {
+ }
+
+ virtual ~BaseHandler()
+ {
+ ASSERT(m_delegateHandler==0);
+ }
+
+ virtual bool startDocument()
+ {
+ return TRUE;
+ }
+
+ virtual bool startElement( const QString & namespaceURI,
+ const QString & localName,
+ const QString & name,
+ const QXmlAttributes & attrib
+ )
+ {
+ if (m_delegateHandler)
+ {
+ return m_delegateHandler->startElement(namespaceURI,localName,name,attrib);
+ }
+ if (!m_skipUntil.isEmpty()) // skip mode
+ {
+ if (m_skipUntil==name) m_skipCount++;
+ printf("skipping start tag %s count=%d\n",name.data(),m_skipCount);
+ return TRUE;
+ }
+
+ StartElementHandlerT *handler = m_startHandlers[name];
+ if (handler)
+ {
+ (*handler)(attrib);
+ //printf("found start tag %s\n",name.data());
+ }
+ else if (!m_fallBackHandler ||
+ !m_fallBackHandler->handleStartElement(name,attrib)
+ )
+ {
+ printf("found unexpected tag `%s', skipping until matching end tag\n",name.data());
+ m_skipUntil = name;
+ m_skipCount=1;
+ }
+ return TRUE;
+ }
+
+ virtual bool endElement( const QString& namespaceURI, const QString& localName, const QString& name )
+ {
+ if (m_delegateHandler)
+ {
+ return m_delegateHandler->endElement(namespaceURI,localName,name);
+ }
+
+ if (name==m_skipUntil)
+ {
+ m_skipCount--;
+ printf("skipping end tag %s count=%d\n",name.data(),m_skipCount);
+ if (m_skipCount==0)
+ {
+ m_skipUntil="";
+ }
+ //printf("found end tag %s\n",name.data());
+ }
+ else if (m_skipUntil.isEmpty())
+ {
+ EndElementHandlerT *handler = m_endHandlers[name];
+ if (handler)
+ {
+ (*handler)();
+ //printf("found end tag %s\n",name.data());
+ }
+ else if (m_fallBackHandler)
+ {
+ m_fallBackHandler->handleEndElement(name);
+ }
+ }
+ m_curString="";
+ return TRUE;
+ }
+
+ bool skippedEntity ( const QString &s )
+ {
+ if (m_delegateHandler)
+ {
+ return m_delegateHandler->skippedEntity(s);
+ }
+
+ printf("Skipped unhandled entity %s\n",s.data());
+ return TRUE;
+ }
+
+ /*! called when a number of characters are received by the parser.
+ * \param ch the characters.
+ */
+ virtual bool characters ( const QString & ch )
+ {
+ if (m_delegateHandler)
+ {
+ return m_delegateHandler->characters(ch);
+ }
+
+ //printf("Found characters \"%s\"\n",ch.data());
+ m_curString+=ch;
+ return TRUE;
+ }
+
+ void setDelegate(QXmlDefaultHandler *delegate)
+ {
+ m_delegateHandler = delegate;
+ }
+
+ QXmlDefaultHandler *delegate() const
+ {
+ return m_delegateHandler;
+ }
+
+ void setFallBackHandler(IFallBackHandler *h)
+ {
+ m_fallBackHandler = h;
+ }
+
+ IFallBackHandler *fallBackHandler() const
+ {
+ return m_fallBackHandler;
+ }
+
+ protected:
+ QString m_curString;
+ QString m_skipUntil;
+ int m_skipCount;
+ QXmlDefaultHandler *m_delegateHandler;
+ IFallBackHandler *m_fallBackHandler;
+};
+
+template<class T> class BaseFallBackHandler : public ElementMapper<T>,
+ public IFallBackHandler
+{
+ public:
+ BaseFallBackHandler()
+ {
+ }
+ virtual ~BaseFallBackHandler()
+ {
+ }
+ bool handleStartElement(const QString & name,
+ const QXmlAttributes & attrib)
+ {
+ StartElementHandlerT *handler = m_startHandlers[name];
+ if (handler)
+ {
+ (*handler)(attrib);
+ return TRUE;
+ }
+ return FALSE;
+ }
+ bool handleEndElement(const QString &name)
+ {
+ EndElementHandlerT *handler = m_endHandlers[name];
+ if (handler)
+ {
+ (*handler)();
+ return TRUE;
+ }
+ return FALSE;
+ }
+};
+
+
+#endif