gem-graph-server/include/xml.h

//=-------------------------------------------------------------------------=//
//  XML management tools                                                     //
//                                                                           //
//  Copyright © 2021 The Gem-graph Project                                   //
//                                                                           //
//  This file is part of gem-graph.                                          //
//                                                                           //
//  This program is free software: you can redistribute it and/or modify     //
//  it under the terms of the GNU Affero General Public License as           //
//  published by the Free Software Foundation, either version 3 of the       //
//  License, or (at your option) any later version.                          //
//                                                                           //
//  This program is distributed in the hope that it will be useful,          //
//  but WITHOUT ANY WARRANTY; without even the implied warranty of           //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            //
//  GNU Affero General Public License for more details.                      //
//                                                                           //
//  You should have received a copy of the GNU Affero General Public License //
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.   //
//=-------------------------------------------------------------------------=//

#ifndef BASE_H
    #include "../include/base.h"
#endif

#include <string.h>
#include <stdlib.h>
#include <libxml2/libxml/xmlmemory.h>
#include <libxml2/libxml/parser.h>

static xmlDocPtr currentDocument = NULL;
static xmlNodePtr currentDocumentRoot = NULL;

void setCurrentDocument(char *filename)
{
    currentDocument = xmlParseFile(filename);

    if (currentDocument == NULL ) {
        printLog("%s not parsed successfully.\n", filename);
        xmlFreeDoc(currentDocument);
        currentDocument = NULL;
    }

    currentDocumentRoot = xmlDocGetRootElement(currentDocument);

    if (currentDocumentRoot == NULL ) {
        printLog("%s is invalid (no root)\n", filename);
        xmlFreeDoc(currentDocument);
        currentDocument = NULL;
        currentDocumentRoot = NULL;
    }
}

void delCurrentDocument(void)
{
    currentDocument = xmlFreeDoc(currentDocument);
    currentDocumentRoot = NULL;
    currentDocument = NULL;
}