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/* dtdvalidator.cpp
* libxml++ and this file are copyright (C) 2000 by Ari Johnson
* (C) 2002-2004 by the libxml dev team and
* are covered by the GNU Lesser General Public License, which should be
* included with libxml++ as the file COPYING.
*/
#include <libxml++config.h> // LIBXMLXX_DISABLE_DEPRECATED
#ifndef LIBXMLXX_DISABLE_DEPRECATED
#include "libxml++/validators/schemavalidator.h"
#include "libxml++/schema.h"
#include <libxml/xmlschemas.h>
#include <libxml/xmlschemastypes.h>
#include <sstream>
#include <iostream>
namespace
{
// This class simply holds a xmlSchemaParserCtxtPtr and releases it on
// destruction. This way, we make sure we don't leak it in either case,
// even when an exception is thrown.
class XmlSchemaParserContextHolder
{
public:
XmlSchemaParserContextHolder(xmlSchemaParserCtxtPtr ptr): ptr_(ptr) {}
~XmlSchemaParserContextHolder() { xmlSchemaFreeParserCtxt(ptr_); }
private:
xmlSchemaParserCtxtPtr ptr_;
};
}
namespace xmlpp
{
SchemaValidator::SchemaValidator()
: schema_(nullptr)
, embbeded_shema_(false)
, ctxt_(nullptr)
{
}
SchemaValidator::SchemaValidator(const Glib::ustring& file)
: schema_(nullptr)
, embbeded_shema_(false)
, ctxt_(nullptr)
{
parse_file( file );
}
SchemaValidator::SchemaValidator(Document& document)
: schema_(nullptr)
, embbeded_shema_(false)
, ctxt_(nullptr)
{
parse_document( document );
}
SchemaValidator::SchemaValidator(Schema* schema)
: schema_(schema)
, embbeded_shema_(false)
, ctxt_(nullptr)
{
}
SchemaValidator::~SchemaValidator()
{
release_underlying();
Validator::release_underlying();
}
void SchemaValidator::parse_context(_xmlSchemaParserCtxt* context)
{
if (!context)
throw parse_error("Could not create schema parser context\n" + format_xml_error());
release_underlying(); // Free any existing schema.
auto schema = xmlSchemaParse( context );
if ( ! schema )
throw parse_error("Schema could not be parsed\n" + format_xml_error());
schema->_private = new Schema(schema);
schema_ = static_cast<Schema*>(schema->_private);
embbeded_shema_ = true;
}
void SchemaValidator::parse_file(const Glib::ustring& filename)
{
xmlResetLastError();
auto ctx = xmlSchemaNewParserCtxt( filename.c_str() );
XmlSchemaParserContextHolder holder(ctx);
parse_context( ctx );
}
void SchemaValidator::parse_memory(const Glib::ustring& contents)
{
xmlResetLastError();
auto ctx = xmlSchemaNewMemParserCtxt( contents.c_str(), contents.bytes() );
XmlSchemaParserContextHolder holder(ctx);
parse_context( ctx );
}
void SchemaValidator::parse_document(Document& document)
{
xmlResetLastError();
auto ctx = xmlSchemaNewDocParserCtxt( document.cobj() );
XmlSchemaParserContextHolder holder(ctx);
parse_context( ctx );
}
void SchemaValidator::set_schema(Schema* schema)
{
release_underlying();
schema_ = schema;
embbeded_shema_ = false;
}
void SchemaValidator::release_underlying()
{
if(ctxt_)
{
xmlSchemaFreeValidCtxt( ctxt_ );
ctxt_ = nullptr;
}
if(schema_)
{
if(embbeded_shema_)
delete schema_;
schema_ = nullptr;
}
}
SchemaValidator::operator bool() const
{
return schema_ != nullptr;
}
Schema* SchemaValidator::get_schema()
{
return schema_;
}
const Schema* SchemaValidator::get_schema() const
{
return schema_;
}
void SchemaValidator::initialize_valid()
{
xmlSchemaSetValidErrors(ctxt_, &callback_validity_error, &callback_validity_warning, this);
Validator::initialize_valid();
}
bool SchemaValidator::validate(const Document* doc)
{
if (!doc)
throw internal_error("Document pointer cannot be 0");
if (!schema_)
throw internal_error("Must have a schema to validate document");
// A context is required at this stage only
if (!ctxt_)
ctxt_ = xmlSchemaNewValidCtxt( schema_->cobj() );
if(!ctxt_)
{
throw internal_error("Couldn't create validating context");
}
xmlResetLastError();
initialize_valid();
const int res = xmlSchemaValidateDoc( ctxt_, (xmlDoc*)doc->cobj() );
if(res != 0)
{
check_for_exception();
auto error_str = format_xml_error();
if (error_str.empty())
error_str = "Error code from xmlSchemaValidateDoc(): " + Glib::ustring::format(res);
throw validity_error("Document failed schema validation\n" + error_str);
}
return res == 0;
}
bool SchemaValidator::validate(const Glib::ustring& file)
{
if (file.empty())
throw internal_error("File path must not be empty");
if (!schema_)
throw internal_error("Must have a schema to validate document");
// A context is required at this stage only
if (!ctxt_)
ctxt_ = xmlSchemaNewValidCtxt( schema_->cobj() );
if(!ctxt_)
{
throw internal_error("Couldn't create validating context");
}
xmlResetLastError();
initialize_valid();
const int res = xmlSchemaValidateFile( ctxt_, file.c_str(), 0 );
if(res != 0)
{
check_for_exception();
auto error_str = format_xml_error();
if (error_str.empty())
error_str = "Error code from xmlSchemaValidateFile(): " + Glib::ustring::format(res);
throw validity_error("Document failed schema validation\n" + error_str);
}
return res == 0;
}
} // namespace xmlpp
#endif // LIBXMLXX_DISABLE_DEPRECATED
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