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#include "include_entity_resolver.h"
#include <xercesc/framework/LocalFileInputSource.hpp>
#include "boost/filesystem.hpp"
#include "support/xerces_string_guard.h"
namespace {
std::pair<bool, std::string> extractFilePath(const std::string& rawPath) {
const std::size_t leadingDelimiter = rawPath.find_first_of('[');
const std::size_t closingDelimiter = rawPath.find_last_of(']');
if ( leadingDelimiter != std::string::npos &&
closingDelimiter != std::string::npos &&
leadingDelimiter < closingDelimiter ) {
return std::make_pair(
true,
rawPath.substr(
leadingDelimiter + 1,
closingDelimiter - leadingDelimiter - 1
)
);
} else {
return std::make_pair(false, std::string());
}
}
}
namespace InputXSLT {
IncludeEntityResolver::IncludeEntityResolver(
const std::vector<std::string>& path):
path_() {
this->path_.reserve(path.size());
std::transform(
path.begin(),
path.end(),
std::back_inserter(this->path_),
[](const std::string& path) -> FilesystemContext {
return FilesystemContext(path);
}
);
}
xercesc::InputSource* IncludeEntityResolver::resolveEntity(
const XMLCh* const,
const XMLCh* const systemId
) {
if ( systemId != nullptr ) {
auto filePath = extractFilePath(*XercesStringGuard<char>(systemId));
if ( filePath.first ) {
auto resolvedPath = this->resolve(filePath.second);
if ( resolvedPath.first ) {
return new xercesc::LocalFileInputSource(
*XercesStringGuard<XMLCh>(resolvedPath.second.string())
);
} else {
return nullptr;
}
} else {
return nullptr;
}
} else {
return nullptr;
}
}
std::pair<bool, boost::filesystem::path> IncludeEntityResolver::resolve(
const std::string& filePath) {
for ( auto&& context : this->path_ ) {
const boost::filesystem::path resolvedPath(
context.resolve(filePath)
);
if ( boost::filesystem::exists(resolvedPath) &&
boost::filesystem::is_regular_file(resolvedPath) ) {
return std::make_pair(true, resolvedPath);
}
}
return std::make_pair(false, boost::filesystem::path());
}
}
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