SerializableXmlFile.h

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/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * Written (W) 2010 Soeren Sonnenburg
 * Copyright (C) 2010 Berlin Institute of Technology
 */
#ifndef __SERIALIZABLE_XML_FILE_H__
#define __SERIALIZABLE_XML_FILE_H__

#include <shogun/lib/config.h>

#ifdef HAVE_XML

#include <shogun/io/SerializableFile.h>
#include <shogun/base/DynArray.h>

#include <libxml/parser.h>
#include <libxml/tree.h>

#define STR_TRUE                   "true"
#define STR_FALSE                  "false"

#define STR_ITEM                   "i"
#define STR_STRING                 "s"
#define STR_SPARSE                 "r"

#define STR_PROP_TYPE              "type"
#define STR_PROP_IS_NULL           "is_null"
#define STR_PROP_INSTANCE_NAME     "instance_name"
#define STR_PROP_GENERIC_NAME      "generic_name"
#define STR_PROP_FEATINDEX         "feat_index"

namespace shogun
{
class CSerializableXmlFile
    :public CSerializableFile
{
    friend class SerializableXmlReader00;

    DynArray<xmlNode*> m_stack_stream;
    xmlDocPtr m_doc;
    bool m_format;

    void init(bool format);
    bool push_node(const xmlChar* name);
    bool join_node(const xmlChar* name);
    bool next_node(const xmlChar* name);
    void pop_node();

protected:
    virtual TSerializableReader* new_reader(
        char* dest_version, size_t n);

    virtual bool write_scalar_wrapped(
        const TSGDataType* type, const void* param);

    virtual bool write_cont_begin_wrapped(
        const TSGDataType* type, index_t len_real_y,
        index_t len_real_x);
    virtual bool write_cont_end_wrapped(
        const TSGDataType* type, index_t len_real_y,
        index_t len_real_x);

    virtual bool write_string_begin_wrapped(
        const TSGDataType* type, index_t length);
    virtual bool write_string_end_wrapped(
        const TSGDataType* type, index_t length);

    virtual bool write_stringentry_begin_wrapped(
        const TSGDataType* type, index_t y);
    virtual bool write_stringentry_end_wrapped(
        const TSGDataType* type, index_t y);

    virtual bool write_sparse_begin_wrapped(
        const TSGDataType* type, index_t length);
    virtual bool write_sparse_end_wrapped(
        const TSGDataType* type, index_t length);

    virtual bool write_sparseentry_begin_wrapped(
        const TSGDataType* type, const SGSparseVectorEntry<char>* first_entry,
        index_t feat_index, index_t y);
    virtual bool write_sparseentry_end_wrapped(
        const TSGDataType* type, const SGSparseVectorEntry<char>* first_entry,
        index_t feat_index, index_t y);

    virtual bool write_item_begin_wrapped(
        const TSGDataType* type, index_t y, index_t x);
    virtual bool write_item_end_wrapped(
        const TSGDataType* type, index_t y, index_t x);

    virtual bool write_sgserializable_begin_wrapped(
        const TSGDataType* type, const char* sgserializable_name,
        EPrimitiveType generic);
    virtual bool write_sgserializable_end_wrapped(
        const TSGDataType* type, const char* sgserializable_name,
        EPrimitiveType generic);

    virtual bool write_type_begin_wrapped(
        const TSGDataType* type, const char* name,
        const char* prefix);
    virtual bool write_type_end_wrapped(
        const TSGDataType* type, const char* name,
        const char* prefix);

public:
    explicit CSerializableXmlFile();

    explicit CSerializableXmlFile(const char* fname, char rw='r',
                                  bool format=false);

    virtual ~CSerializableXmlFile();

    virtual const char* get_name() const {
        return "SerializableXmlFile";
    }

    virtual void close();
    virtual bool is_opened();
};
}
#endif /* HAVE_XML  */
#endif /* __SERIALIZABLE_XML_FILE_H__  */