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Allow to save/load XML to/from buffer

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This commit is contained in:
wmayer 2013-04-26 17:05:40 +02:00
parent 06df5daa26
commit 1a81658d5e
2 changed files with 54 additions and 88 deletions
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134
src/Base/Parameter.cpp
View File

@ -37,6 +37,7 @@
# endif
# include <xercesc/framework/StdOutFormatTarget.hpp>
# include <xercesc/framework/LocalFileFormatTarget.hpp>
# include <xercesc/framework/LocalFileInputSource.hpp>
# include <xercesc/parsers/XercesDOMParser.hpp>
# include <xercesc/util/XMLUni.hpp>
# include <xercesc/util/XMLUniDefs.hpp>
@ -1080,7 +1081,23 @@ bool ParameterManager::LoadOrCreateDocument(const char* sFileName)
int ParameterManager::LoadDocument(const char* sFileName)
{
Base::FileInfo file(sFileName);
try {
#if defined (FC_OS_WIN32)
LocalFileInputSource inputSource((XMLCh*)file.toStdWString().c_str());
#else
LocalFileInputSource inputSource(XStr(file.filePath().c_str()).unicodeForm());
#endif
return LoadDocument(inputSource);
}
catch (...) {
std::cerr << "An error occurred during parsing\n " << std::endl;
return 0;
}
}
int ParameterManager::LoadDocument(const XERCES_CPP_NAMESPACE_QUALIFIER InputSource& inputSource)
{
//
// Create our parser, then attach an error handler to the parser.
// The parser will call back to methods of the ErrorHandler if it
@ -1102,11 +1119,7 @@ int ParameterManager::LoadDocument(const char* sFileName)
//
bool errorsOccured = false;
try {
#if defined (FC_OS_WIN32)
parser->parse((XMLCh*)file.toStdWString().c_str());
#else
parser->parse(file.filePath().c_str());
#endif
parser->parse(inputSource);
}
catch (const XMLException& e) {
@ -1152,10 +1165,36 @@ int ParameterManager::LoadDocument(const char* sFileName)
}
void ParameterManager::SaveDocument(const char* sFileName) const
{
Base::FileInfo file(sFileName);
try {
//
// Plug in a format target to receive the resultant
// XML stream from the serializer.
//
// LocalFileFormatTarget prints the resultant XML stream
// to a file once it receives any thing from the serializer.
//
#if defined (FC_OS_WIN32)
XMLFormatTarget *myFormTarget = new LocalFileFormatTarget ((XMLCh*)file.toStdWString().c_str());
#else
XMLFormatTarget *myFormTarget = new LocalFileFormatTarget (file.filePath().c_str());
#endif
SaveDocument(myFormTarget);
delete myFormTarget;
}
catch (XMLException& e) {
std::cerr << "An error occurred during creation of output transcoder. Msg is:"
<< std::endl
<< StrX(e.getMessage()) << std::endl;
}
}
void ParameterManager::SaveDocument(XMLFormatTarget* pFormatTarget) const
{
#if (XERCES_VERSION_MAJOR == 2)
DOMPrintFilter *myFilter = 0;
Base::FileInfo file(sFileName);
try {
// get a serializer, an instance of DOMWriter
@ -1199,31 +1238,17 @@ void ParameterManager::SaveDocument(const char* sFileName) const
if (theSerializer->canSetFeature(XMLUni::fgDOMWRTFormatPrettyPrint, gFormatPrettyPrint))
theSerializer->setFeature(XMLUni::fgDOMWRTFormatPrettyPrint, gFormatPrettyPrint);
//
// Plug in a format target to receive the resultant
// XML stream from the serializer.
//
// LocalFileFormatTarget prints the resultant XML stream
// to a file once it receives any thing from the serializer.
//
#if defined (FC_OS_WIN32)
XMLFormatTarget *myFormTarget = new LocalFileFormatTarget ((XMLCh*)file.toStdWString().c_str());
#else
XMLFormatTarget *myFormTarget = new LocalFileFormatTarget (file.filePath().c_str());
#endif
//
// do the serialization through DOMWriter::writeNode();
//
theSerializer->writeNode(myFormTarget, *_pDocument);
theSerializer->writeNode(pFormatTarget, *_pDocument);
delete theSerializer;
//
// Filter, formatTarget and error handler
// Filter and error handler
// are NOT owned by the serializer.
//
delete myFormTarget;
delete myErrorHandler;
if (gUseFilter)
@ -1236,8 +1261,6 @@ void ParameterManager::SaveDocument(const char* sFileName) const
<< StrX(e.getMessage()) << std::endl;
}
#else
Base::FileInfo file(sFileName);
try {
// get a serializer, an instance of DOMWriter
XMLCh tempStr[100];
@ -1250,70 +1273,15 @@ void ParameterManager::SaveDocument(const char* sFileName) const
DOMConfiguration* config = theSerializer->getDomConfig();
config->setParameter(XStr("format-pretty-print").unicodeForm(),true);
// plug in user's own filter
if (gUseFilter) {
// even we say to show attribute, but the DOMWriter
// will not show attribute nodes to the filter as
// the specs explicitly says that DOMWriter shall
// NOT show attributes to DOMWriterFilter.
//
// so DOMNodeFilter::SHOW_ATTRIBUTE has no effect.
// same DOMNodeFilter::SHOW_DOCUMENT_TYPE, no effect.
//
// myFilter = new DOMPrintFilter(DOMNodeFilter::SHOW_ELEMENT |
// DOMNodeFilter::SHOW_ATTRIBUTE |
// DOMNodeFilter::SHOW_DOCUMENT_TYPE
// );
// theSerializer->setFilter(myFilter);
}
// plug in user's own error handler
DOMErrorHandler *myErrorHandler = new DOMPrintErrorHandler();
// theSerializer->setErrorHandler(myErrorHandler);
// set feature if the serializer supports the feature/mode
// if (theSerializer->canSetFeature(XMLUni::fgDOMWRTSplitCdataSections, gSplitCdataSections))
// theSerializer->setFeature(XMLUni::fgDOMWRTSplitCdataSections, gSplitCdataSections);
// if (theSerializer->canSetFeature(XMLUni::fgDOMWRTDiscardDefaultContent, gDiscardDefaultContent))
// theSerializer->setFeature(XMLUni::fgDOMWRTDiscardDefaultContent, gDiscardDefaultContent);
// if (theSerializer->canSetFeature(XMLUni::fgDOMWRTFormatPrettyPrint, gFormatPrettyPrint))
// theSerializer->setFeature(XMLUni::fgDOMWRTFormatPrettyPrint, gFormatPrettyPrint);
//
// Plug in a format target to receive the resultant
// XML stream from the serializer.
//
// LocalFileFormatTarget prints the resultant XML stream
// to a file once it receives any thing from the serializer.
//
#if defined (FC_OS_WIN32)
XMLFormatTarget *myFormTarget = new LocalFileFormatTarget ((XMLCh*)file.toStdWString().c_str());
#else
XMLFormatTarget *myFormTarget = new LocalFileFormatTarget (file.filePath().c_str());
#endif
//
// do the serialization through DOMWriter::writeNode();
//
DOMLSOutput *theOutput = ((DOMImplementationLS*)impl)->createLSOutput();
theOutput->setEncoding(gOutputEncoding);
theOutput->setByteStream(myFormTarget);
theOutput->setByteStream(pFormatTarget);
theSerializer->write(_pDocument, theOutput);
delete theSerializer;
//
// Filter, formatTarget and error handler
// are NOT owned by the serializer.
//
delete myFormTarget;
delete myErrorHandler;
// if (gUseFilter)
// delete myFilter;
}
catch (XMLException& e) {
std::cerr << "An error occurred during creation of output transcoder. Msg is:"
@ -1327,6 +1295,7 @@ void ParameterManager::CreateDocument(void)
{
// creating a document from screatch
DOMImplementation* impl = DOMImplementationRegistry::getDOMImplementation(XStr("Core").unicodeForm());
delete _pDocument;
_pDocument = impl->createDocument(
0, // root element namespace URI.
XStr("FCParameters").unicodeForm(), // root element name
@ -1337,11 +1306,8 @@ void ParameterManager::CreateDocument(void)
_pGroupNode = _pDocument->createElement(XStr("FCParamGroup").unicodeForm());
((DOMElement*)_pGroupNode)->setAttribute(XStr("Name").unicodeForm(), XStr("Root").unicodeForm());
rootElem->appendChild(_pGroupNode);
}
void ParameterManager::CheckDocument() const
{

8
src/Base/Parameter.h
View File

@ -60,6 +60,8 @@ XERCES_CPP_NAMESPACE_BEGIN
class DOMNode;
class DOMElement;
class DOMDocument;
class XMLFormatTarget;
class InputSource;
XERCES_CPP_NAMESPACE_END
class ParameterManager;
@ -266,13 +268,11 @@ public:
static void Init(void);
int LoadDocument(const char* sFileName);
int LoadDocument(const XERCES_CPP_NAMESPACE_QUALIFIER InputSource&);
bool LoadOrCreateDocument(const char* sFileName);
void SaveDocument(const char* sFileName) const;
void SaveDocument(XERCES_CPP_NAMESPACE_QUALIFIER XMLFormatTarget* pFormatTarget) const;
void CreateDocument(void);
void CheckDocument() const;
private: