/*

 * Copyright (c) 2020 Red Hat, Inc.

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston, MA

 * 02110-1301, USA. 

 *

 * $Id: //eng/uds-releases/jasper/kernelLinux/uds/stringLinuxKernel.c#1 $

 */

#include <linux/mm.h>

#include "errors.h"

#include "logger.h"

#include "stringUtils.h"

/**********************************************************************/

int stringToSignedLong(const char *nptr, long *num)

{

  while (*nptr == ' ') {

    nptr++;

  }

  return kstrtol(nptr, 10, num) ? UDS_INVALID_ARGUMENT : UDS_SUCCESS;

}

/**********************************************************************/

int stringToUnsignedLong(const char *nptr, unsigned long *num)

{

  while (*nptr == ' ') {

    nptr++;

  }

  if (*nptr == '+') {

    nptr++;

  }

  return kstrtoul(nptr, 10, num) ? UDS_INVALID_ARGUMENT : UDS_SUCCESS;

}

/*****************************************************************************/

char *nextToken(char *str, const char *delims, char **state)

{

  char *sp = str ? str : *state;

  while (*sp && strchr(delims, *sp)) {

    ++sp;

  }

  if (!*sp) {

    return NULL;

  }

  char *ep = sp;

  while (*ep && !strchr(delims, *ep)) {

    ++ep;

  }

  if (*ep) {

    *ep++ = '\0';

  }

  *state = ep;

  return sp;

}

/*****************************************************************************/

int parseUint64(const char *str, uint64_t *num)

{

  unsigned long value = *num;

  int result = stringToUnsignedLong(str, &value);

  *num = value;

  return result;

}