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#include "external_text_formatter.h"
#include <xalanc/XSLT/XSLTInputSource.hpp>
#include <xercesc/parsers/XercesDOMParser.hpp>
#include <boost/process.hpp>
#include <sstream>
#include "support/xerces_string_guard.h"
#include "support/dom/result_node_facade.h"
namespace {
using InputXSLT::XercesStringGuard;
inline xercesc::DOMNode* importDocumentElement(
boost::process::pistream& outputStream,
xercesc::DOMDocument* const domDocument
) {
std::stringstream xmlStream(
"<output>" + std::string(
(std::istreambuf_iterator<char>(outputStream)),
(std::istreambuf_iterator<char>())
) + "</output>"
);
xercesc::XercesDOMParser parser;
parser.parse(xalan::XSLTInputSource(xmlStream));
return domDocument->importNode(
parser.getDocument()->getDocumentElement(),
true
);
}
}
namespace InputXSLT {
DomDocumentCache::document_ptr FunctionExternalTextFormatter::constructDocument(
std::string formatterCommand,
std::string stdinText
) const {
DomDocumentCache::document_ptr domDocument(
DomDocumentCache::createDocument("content")
);
boost::process::context context;
context.environment = boost::process::self::get_environment();
context.stdout_behavior = boost::process::capture_stream();
context.stdin_behavior = boost::process::capture_stream();
boost::process::child formatterProcess(
boost::process::launch_shell(
formatterCommand,
context
)
);
boost::process::postream& inputStream = formatterProcess.get_stdin();
boost::process::pistream& outputStream = formatterProcess.get_stdout();
inputStream << stdinText;
inputStream.close();
boost::process::status status = formatterProcess.wait();
ResultNodeFacade result(domDocument.get(), "output");
result.setAttribute("formatter", formatterCommand);
result.setAttribute("code", std::to_string(status.exit_status()));
if ( status.exited() ) {
try {
result.setContent(
importDocumentElement(
outputStream,
domDocument.get()
)->getChildNodes()
);
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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