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#include "read_file.h"
#include <xercesc/dom/DOMDocument.hpp>
#include <xercesc/dom/DOMImplementation.hpp>
#include <xercesc/dom/DOMElement.hpp>
#include <xercesc/dom/DOMText.hpp>
#include "boost/filesystem/fstream.hpp"
#include "support/xerces_string_guard.h"
#include "support/filesystem_context.h"
namespace {
inline std::string readFile(const boost::filesystem::path& filePath) {
boost::filesystem::ifstream file(filePath);
return std::string(
(std::istreambuf_iterator<char>(file)),
(std::istreambuf_iterator<char>())
);
}
}
namespace InputXSLT {
FunctionReadFile::FunctionReadFile():
document_cache_(std::make_shared<DomDocumentCache>()) { }
xalan::XObjectPtr FunctionReadFile::execute(
xalan::XPathExecutionContext& executionContext,
xalan::XalanNode*,
const xalan::XObjectPtr argument,
const xalan::Locator* locator
) const {
const FilesystemContext fs_context(
boost::filesystem::path(
*XercesStringGuard<char>(
xercesc::XMLString::transcode(
locator->getSystemId() + 7
)
)
).parent_path().string()
);
const boost::filesystem::path filePath(
fs_context.resolve(argument->str())
);
DomDocumentCache::optional_item optionalCachedDocument(
this->document_cache_->get(filePath.string())
);
if ( !optionalCachedDocument.first ) {
xercesc::DOMDocument* const domDocument(
xercesc::DOMImplementation::getImplementation()->createDocument(
nullptr,
*XercesStringGuard<XMLCh>("content"),
nullptr
)
);
xercesc::DOMNode* const rootNode(
domDocument->getDocumentElement()
);
if ( boost::filesystem::is_regular_file(filePath) ) {
xercesc::DOMElement* const resultNode(
domDocument->createElement(*XercesStringGuard<XMLCh>("result"))
);
resultNode->setAttribute(
*XercesStringGuard<XMLCh>("name"),
*XercesStringGuard<XMLCh>(filePath.filename().string())
);
xercesc::DOMText* const resultTextNode(
domDocument->createTextNode(
*XercesStringGuard<XMLCh>(readFile(filePath))
)
);
resultNode->appendChild(resultTextNode);
rootNode->appendChild(resultNode);
} else {
xercesc::DOMElement* const resultNode(
domDocument->createElement(*XercesStringGuard<XMLCh>("error"))
);
rootNode->appendChild(resultNode);
}
optionalCachedDocument = this->document_cache_->create(
filePath.string(),
domDocument
);
}
xalan::XPathExecutionContext::BorrowReturnMutableNodeRefList nodeList(
executionContext
);
nodeList->addNodes(
*optionalCachedDocument.second->getXalanDocument()
->getDocumentElement()
->getChildNodes()
);
return executionContext.getXObjectFactory().createNodeSet(nodeList);
}
FunctionReadFile* FunctionReadFile::clone(
xalan::MemoryManager& manager) const {
return xalan::XalanCopyConstruct(manager, *this);
}
const xalan::XalanDOMString& FunctionReadFile::getError(
xalan::XalanDOMString& result) const {
result.assign("The read-file() function expects one argument of type string.");
return result;
}
}
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