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#include "read_file.h"
#include <xercesc/parsers/XercesDOMParser.hpp>
#include <xercesc/framework/LocalFileInputSource.hpp>
#include <boost/optional.hpp>
#include <boost/filesystem/fstream.hpp>
#include "support/xerces_string_guard.h"
#include "support/dom/result_node_facade.h"
namespace {
inline bool isXmlFile(const boost::filesystem::path& filePath) {
return filePath.extension() == ".xml"
|| filePath.extension() == ".xsl";
}
boost::optional<xercesc::DOMNode*> readXmlFile(
const boost::filesystem::path& filePath,
xercesc::DOMDocument* const domDocument
) {
const xercesc::LocalFileInputSource file{
*InputXSLT::XercesStringGuard<XMLCh>(filePath.string())
};
xercesc::XercesDOMParser parser;
parser.setDoNamespaces(true);
parser.parse(file);
if ( parser.getErrorCount() == 0 ) {
return boost::make_optional(
domDocument->importNode(
parser.getDocument()->getDocumentElement(),
true
)
);
} else {
return boost::optional<xercesc::DOMNode*>();
}
}
boost::optional<std::string> readPlainFile(
const boost::filesystem::path& filePath) {
boost::filesystem::ifstream file(filePath);
if ( file.is_open() ) {
return boost::make_optional(
std::string(
(std::istreambuf_iterator<char>(file)),
(std::istreambuf_iterator<char>())
)
);
} else {
return boost::optional<std::string>();
}
}
}
namespace InputXSLT {
DomDocumentCache::document_ptr FunctionReadFile::constructDocument(
const FilesystemContext&,
boost::filesystem::path filePath
) const {
DomDocumentCache::document_ptr domDocument(
DomDocumentCache::createDocument("content")
);
ResultNodeFacade result(domDocument.get(), "file");
result.setAttribute("name", filePath.filename().string());
result.setAttribute("base", filePath.parent_path().string());
if ( boost::filesystem::is_regular_file(filePath) ) {
try {
if ( isXmlFile(filePath) ) {
result.setAttribute("type", "xml");
if ( auto importedNode = readXmlFile(
filePath,
domDocument.get()
) ) {
result.setContent(*importedNode);
result.setAttribute("result", "success");
} else {
result.setAttribute("result", "error");
}
} else {
result.setAttribute("type", "plain");
if ( auto plainContent = readPlainFile(filePath) ) {
result.setContent(*plainContent);
result.setAttribute("result", "success");
} else {
result.setAttribute("result", "error");
}
result.setAttribute("result", "success");
}
}
catch ( const xercesc::DOMException& exception ) {
result.setAttribute("result", "error");
result.setValueNode(
"error",
*XercesStringGuard<char>(exception.msg)
);
}
} else {
result.setAttribute("result", "error");
}
return domDocument;
}
}
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