/*

 * LIBOIL - Library of Optimized Inner Loops

 * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,

 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <liboil/liboilfunction.h>

#include <liboil/liboildebug.h>

#include <liboil/liboilutils.h>

#ifdef HAVE_UNISTD_H

#include <unistd.h>

#endif

#include <fcntl.h>

#include <stdlib.h>

#include <string.h>

int

get_file_int (const char *file, int *value)

{

  char buffer[20];

  char *endptr;

  int fd;

  int n;

  fd = open (file, O_RDONLY);

  if (fd < 0) return 0;

  n = read(fd, buffer, 19);

  close(fd);

  if (n < 0) {

    return 0;

  }

  buffer[n] = 0;

  *value = strtol (buffer, &endptr, 0);

  if (endptr[0] == 0 || endptr[0] == '\n') return 1;

  return 0;

}

char *

get_file (const char *filename)

{

  char *cpuinfo;

  int fd;

  int n;

  cpuinfo = malloc(4096);

  if (cpuinfo == NULL) return NULL;

  fd = open(filename, O_RDONLY);

  if (fd < 0) {

    free (cpuinfo);

    return NULL;

  }

  n = read(fd, cpuinfo, 4095);

  if (n < 0) {

    free (cpuinfo);

    close (fd);

    return NULL;

  }

  cpuinfo[n] = 0;

  close (fd);

  return cpuinfo;

}

char *

get_cpuinfo_line (char *cpuinfo, const char *tag)

{

  char *flags;

  char *end;

  char *colon;

  flags = strstr(cpuinfo,tag);

  if (flags == NULL) return NULL;

  end = strchr(flags, '\n');

  if (end == NULL) return NULL;

  colon = strchr (flags, ':');

  if (colon == NULL) return NULL;

  colon++;

  if(colon >= end) return NULL;

  return _strndup (colon, end-colon);

}

char *

_strndup (const char *s, int n)

{

  char *r;

  r = malloc (n+1);

  memcpy(r,s,n);

  r[n]=0;

  return r;

}

char **

strsplit (char *s)

{

  char **list = NULL;

  char *tok;

  int n = 0;

  while (*s == ' ') s++;

  list = malloc (1 * sizeof(char *));

  while (*s) {

    tok = s;

    while (*s && *s != ' ') s++;

    list[n] = _strndup (tok, s - tok);

    while (*s && *s == ' ') s++;

    list = realloc (list, (n + 2) * sizeof(char *));

    n++;

  }

  list[n] = NULL;

  return list;

}

char *

get_tag_value (char *s, const char *tag)

{

  char *flags;

  char *end;

  char *colon;

  flags = strstr(s,tag);

  if (flags == NULL) return NULL;

  end = strchr(flags, '\n');

  if (end == NULL) return NULL;

  colon = strchr (flags, ':');

  if (colon == NULL) return NULL;

  colon++;

  if(colon >= end) return NULL;

  return _strndup (colon, end-colon);

}