gui/help.c

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/************************************************************************
*            Atrinik, a Multiplayer Online Role Playing Game            *
*                                                                       *
*    Copyright (C) 2009-2011 Alex Tokar and Atrinik Development Team    *
*                                                                       *
* Fork from Daimonin (Massive Multiplayer Online Role Playing Game)     *
* and Crossfire (Multiplayer game for X-windows).                       *
*                                                                       *
* 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 2 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 General Public License for more details.                          *
*                                                                       *
* You should have received a copy of the GNU General Public License     *
* along with this program; if not, write to the Free Software           *
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.             *
*                                                                       *
* The author can be reached at admin@atrinik.org                        *
************************************************************************/

#include <global.h>

void free_help_files()
{
    help_files_struct *help_file_tmp, *help_file = help_files;

    while (help_file)
    {
        help_file_tmp = help_file->next;
        free(help_file);
        help_file = help_file_tmp;
    }

    help_files = NULL;
}

void read_help_files()
{
    FILE *fp = server_file_open(SERVER_FILE_HFILES);
    char buf[HUGE_BUF], helpname[MAX_BUF], title[MAX_BUF], message[HUGE_BUF * 12];
    int end_marker = 0, dm_only = 0, autocomplete = 1;

    if (!fp)
    {
        return;
    }

    if (help_files)
    {
        free_help_files();
    }

    helpname[0] = title[0] = message[0] = '\0';

    /* Loop through the lines */
    while (fgets(buf, sizeof(buf), fp))
    {
        char *end = strchr(buf, '\n');

        if (!strncmp(buf, "Name: ", 6))
        {
            *end = '\0';
            strncpy(helpname, buf + 6, sizeof(helpname) - 1);
        }
        else if (!strncmp(buf, "Title: ", 7))
        {
            *end = '\0';
            strncpy(title, buf + 7, sizeof(title) - 1);
        }
        else if (!strcmp(buf, "DM: 1\n"))
        {
            dm_only = 1;
        }
        else if (!strcmp(buf, "Autocomplete: 0\n"))
        {
            autocomplete = 0;
        }
        else if (!strcmp(buf, "==========\n"))
        {
            end_marker = 1;
        }
        else
        {
            strncat(message, buf, sizeof(message) - strlen(message) - 1);
        }

        if (end_marker)
        {
            help_files_struct *help_files_tmp = (help_files_struct *) malloc(sizeof(help_files_struct));

            help_files_tmp->next = help_files;
            help_files = help_files_tmp;

            strncpy(help_files_tmp->helpname, helpname, sizeof(help_files_tmp->helpname) - 1);
            strncpy(help_files_tmp->title, title, sizeof(help_files_tmp->title) - 1);
            strncpy(help_files_tmp->message, message, sizeof(help_files_tmp->message) - 1);
            help_files_tmp->dm_only = dm_only;
            help_files_tmp->autocomplete = autocomplete;

            helpname[0] = title[0] = message[0] = '\0';
            dm_only = 0;
            autocomplete = 1;

            end_marker = 0;
        }
    }

    fclose(fp);
}

void show_help(const char *helpname)
{
    int len;
    unsigned char *data;
    char message[HUGE_BUF * 16];
    help_files_struct *help_files_tmp;

    /* This will be the default message if we don't find the help we want */
    snprintf(message, sizeof(message), "<book=Help not found><t t=\"The specified help file could not be found.\">\n");

    /* Loop through the linked list of help files */
    for (help_files_tmp = help_files; help_files_tmp; help_files_tmp = help_files_tmp->next)
    {
        /* If title or message are empty or helpname doesn't match, just continue to the next item */
        if (help_files_tmp->title[0] == '\0' || help_files_tmp->message[0] == '\0' || strcmp(help_files_tmp->helpname, helpname))
        {
            continue;
        }

        /* Got what we wanted, replace it with the default message */
        snprintf(message, sizeof(message), "<book>%s</book><title>%s</title>\n%s", help_files_tmp->helpname, help_files_tmp->title, help_files_tmp->message);
        break;
    }

    data = (uint8 *) message;

    len = (int) strlen((char *) data);

    book_load((char *) data, len);
}