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hinote.c

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/*
 * $Id: hinote.c,v 1.22 2006-10-12 14:21:22 desrod Exp $
 *
 * hinote.c:  Translate Hi-Note data formats
 *
 * Copyright 1997 Bill Goodman
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Library General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This library 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 Library
 * General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "pi-hinote.h"

/***********************************************************************
 *
 * Function:    free_HiNoteNote
 *
 * Summary:     frees HiNoteNote_t members
 *
 * Parameters:  HiNoteNote_t*
 *
 * Returns:     void
 *
 ***********************************************************************/
void
free_HiNoteNote(HiNoteNote_t *hinote)
{
        if (hinote->text != NULL) {
                free(hinote->text);
                hinote->text = NULL;
        }
}

/***********************************************************************
 *
 * Function:    unpack_HiNoteNote
 *
 * Summary:     Unpack a HiNote record
 *
 * Parameters:  HiNoteNote_t*, char* to buffer, buffer length
 *
 * Returns:     effective buffer length
 *
 ***********************************************************************/
int
unpack_HiNoteNote(HiNoteNote_t *hinote, unsigned char *buffer, int len)
{
        if (len < 3)
                return 0;

        hinote->flags   = buffer[0];
        hinote->level   = buffer[1];
        hinote->text    = strdup((char *) &buffer[2]);

        return strlen((char *) &buffer[2]) + 3;
}

/***********************************************************************
 *
 * Function:    pack_HiNoteNote
 *
 * Summary:     Pack a HiNote record
 *
 * Parameters:  HiNoteNote_t*
 *
 * Returns:     Nothing
 *
 ***********************************************************************/
int
pack_HiNoteNote(HiNoteNote_t *hinote, unsigned char *buffer, int len)
{
        int     destlen;

        destlen = 3;
        if (hinote->text)
                destlen += strlen(hinote->text);

        if (!buffer)
                return destlen;
        if (len < destlen)
                return 0;

        buffer[0] = hinote->flags;
        buffer[1] = hinote->level;

        if (hinote->text)
                strcpy((char *) &buffer[2], hinote->text);
        else {
                buffer[2] = 0;
        }
        return destlen;
}


/***********************************************************************
 *
 * Function:    unpack_HiNoteAppInfo
 *
 * Summary:     Unpack the HiNote AppInfo block
 *
 * Parameters:  HiNoteAppInfo_t*, char* to record, record length
 *
 * Returns:     effective buffer length
 *
 ***********************************************************************/
int
unpack_HiNoteAppInfo(HiNoteAppInfo_t *appinfo, unsigned char *record, size_t len)
{
        int     i,
                idx;
        unsigned char *start;

        start = record;
        i = unpack_CategoryAppInfo(&appinfo->category, record, len);
        if (!i)
                return i;
        record += i;
        len -= i;
        if (len < 48)
                return 0;
        for (idx = 0; i < 48; i++)
                appinfo->reserved[i] = *record++;
        return (record - start);
}


/***********************************************************************
 *
 * Function:    pack_HiNoteAppInfo
 *
 * Summary:     Pack the HiNote AppInfo block
 *
 * Parameters:  HiNoteAppInfo_t*, char* record, length of record
 *
 * Returns:     effective record length
 *
 ***********************************************************************/
int
pack_HiNoteAppInfo(HiNoteAppInfo_t *appinfo, unsigned char *record, size_t len)
{
        int     i,
                idx;
        unsigned char *start = record;

        i = pack_CategoryAppInfo(&appinfo->category, record, len);
        if (i == 0)             /* category pack failed */
                return 0;
        if (!record)
                return i + 48;
        record += i;
        len -= i;
        if (len < 48)
                return (record - start);
        for (idx = 0; i < 48; i++)
                *record++ = appinfo->reserved[i];

        return (record - start);
}

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