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//===--- XMLValidator.cpp - XML validation --------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#include "XMLValidator.h"
#ifdef SWIFT_HAVE_LIBXML
// libxml headers use their own variant of documentation comments that Clang
// does not understand well.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdocumentation"
#include <libxml/parser.h>
#include <libxml/relaxng.h>
#include <libxml/xmlerror.h>
#pragma clang diagnostic pop
using namespace swift;
struct XMLValidator::Implementation {
std::string SchemaFileName;
xmlRelaxNGParserCtxtPtr RNGParser;
xmlRelaxNGPtr Schema;
};
XMLValidator::XMLValidator() : Impl(new Implementation()) {}
XMLValidator::~XMLValidator() { delete Impl; }
void XMLValidator::setSchema(StringRef FileName) {
assert(Impl->SchemaFileName.empty());
Impl->SchemaFileName = FileName.str();
}
XMLValidator::Status XMLValidator::validate(const std::string &XML) {
if (Impl->SchemaFileName.empty())
return Status{ErrorCode::NoSchema, ""};
if (!Impl->RNGParser) {
Impl->RNGParser = xmlRelaxNGNewParserCtxt(Impl->SchemaFileName.c_str());
Impl->Schema = xmlRelaxNGParse(Impl->RNGParser);
}
if (!Impl->RNGParser)
return Status{ErrorCode::InternalError, ""};
if (!Impl->Schema)
return Status{ErrorCode::BadSchema, ""};
xmlDocPtr Doc = xmlParseDoc(reinterpret_cast<const xmlChar *>(XML.data()));
if (!Doc)
return Status{ErrorCode::NotWellFormed, xmlGetLastError()->message};
xmlRelaxNGValidCtxtPtr ValidationCtxt = xmlRelaxNGNewValidCtxt(Impl->Schema);
int ValidationStatus = xmlRelaxNGValidateDoc(ValidationCtxt, Doc);
Status Result;
if (ValidationStatus == 0) {
Result = Status{ErrorCode::Valid, ""};
} else if (ValidationStatus > 0) {
Result = Status{ErrorCode::NotValid, xmlGetLastError()->message};
} else
Result = Status{ErrorCode::InternalError, ""};
xmlRelaxNGFreeValidCtxt(ValidationCtxt);
xmlFreeDoc(Doc);
return Result;
}
#else // !SWIFT_HAVE_LIBXML
using namespace swift;
struct XMLValidator::Implementation {};
XMLValidator::XMLValidator() : Impl(new Implementation()) {}
XMLValidator::~XMLValidator() { delete Impl; }
void XMLValidator::setSchema(StringRef FileName) {}
XMLValidator::Status XMLValidator::validate(const std::string &XML) {
return Status{ErrorCode::NotCompiledIn, ""};
}
#endif // SWIFT_HAVE_LIBXML
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