/*
   OSC2MIDI

   OSC2MIDI is a heavily extended port of https://github.com/tadas-s/OSC2Midi

   (c)2020 H. Wirtz <wirtz@parasitstudio.de>

   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.

   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
*/

#include "OSC2Midi.h"
#include <string.h>
#include <stdlib.h>

/*
   TODO: this will return rather unpredictable numbers when
   given strings with numbers > 255.
*/
uint8_t getVar(const char *str, int index)
{
  const char *offset = str;

  // skip the first /
  if (strncmp(str, "/", strlen("/")) == 0)
  {
    offset++;
  }

  if (index == -1)
  {
    return atoi(offset);
  }

  while (index > 0)
  {
    const char *new_offset = strstr(offset, "/");
    if (new_offset) {
      offset = new_offset + 1;
    } else {
      return 0;
    }

    index--;
  }

  return atoi(offset);
}

uint8_t getCC(const char *str)
{
  return getVar(str, 1);
}

uint8_t getMIDIChannel(const char *str)
{
  return getVar(str, 0);
}