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// vim: set tabstop=4 shiftwidth=4 noexpandtab:
/*
A KIPI plugin to generate HTML image galleries
Copyright 2006 by Aurelien Gateau <aurelien dot gateau at free.fr>
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., 51 Franklin Street, Fifth Floor, Cambridge, MA 02110-1301, USA.
*/
#ifndef XMLUTILS_H
#define XMLUTILS_H
#include <kdebug.h>
#include <libxml/xmlwriter.h>
namespace KIPIHTMLExport {
/**
* A simple wrapper for a C structure pointed to by @Ptr, which must be freed
* with @freeFcn
*/
template <class Ptr, void(*freeFcn)(Ptr)>
class CWrapper {
public:
CWrapper() : mPtr(0) {}
CWrapper(Ptr ptr)
: mPtr(ptr) {}
~CWrapper() {
freeFcn(mPtr);
}
operator Ptr() const {
return mPtr;
}
bool operator!() const {
return !mPtr;
}
void assign(Ptr ptr) {
if (mPtr) freeFcn(mPtr);
mPtr=ptr;
}
private:
Ptr mPtr;
};
/**
* Simple wrapper around xmlTextWriter
*/
class XMLWriter {
public:
bool open(const TQString& name) {
xmlTextWriterPtr ptr=xmlNewTextWriterFilename(name.local8Bit(), 0);
if (!ptr) return false;
mWriter.assign(ptr);
int rc=xmlTextWriterStartDocument(ptr, NULL, "UTF-8", NULL);
if (rc<0) {
mWriter.assign(0);
return false;
}
xmlTextWriterSetIndent(ptr, 1);
return true;
}
operator xmlTextWriterPtr() const {
return mWriter;
}
void writeElement(const char* element, const TQString& value) {
xmlTextWriterWriteElement(mWriter, BAD_CAST element, BAD_CAST value.utf8().data());
}
void writeElement(const char* element, int value) {
writeElement(element, TQString::number(value));
}
private:
CWrapper<xmlTextWriterPtr,xmlFreeTextWriter> mWriter;
};
/**
* A list of attributes for an XML element. To be used with @ref XMLElement
*/
class XMLAttributeList {
typedef TQMap<TQString, TQString> Map;
public:
void write(XMLWriter& writer) const {
Map::const_iterator it=mMap.begin();
Map::const_iterator end=mMap.end();
for (; it!=end; ++it) {
xmlTextWriterWriteAttribute(writer,
BAD_CAST it.key().ascii(),
BAD_CAST it.data().utf8().data());
}
}
void append(const TQString& key, const TQString& value) {
mMap[key]=value;
}
void append(const TQString& key, int value) {
mMap[key]=TQString::number(value);
}
private:
Map mMap;
};
/**
* A class to generate an XML element
*/
class XMLElement {
public:
XMLElement(XMLWriter& writer, const TQString& element, const XMLAttributeList* attributeList=0)
: mWriter(writer)
{
xmlTextWriterStartElement(writer, BAD_CAST element.ascii());
if (attributeList) {
attributeList->write(writer);
}
}
~XMLElement() {
xmlTextWriterEndElement(mWriter);
}
private:
XMLWriter& mWriter;
};
} // namespace
#endif /* XMLUTILS_H */
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