alcove

/* Copyright (c) 2015, Michael Santos <michael.santos@gmail.com>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include "alcove.h"

#include <ctype.h>

static int alcove_encode_atom_to_lower(char *buf, size_t len, int *index,
                                       const char *p);

int alcove_encode_constant_id(char *buf, size_t len, int *index, long long val,
                              const alcove_constant_t *constants) {
  const alcove_constant_t *dp = NULL;

  for (dp = constants; dp->name != NULL; dp++) {
    if (val == dp->val)
      return alcove_encode_atom_to_lower(buf, len, index, dp->name);
  }

  return alcove_encode_atom(buf, len, index, "unknown");
}

static int alcove_encode_atom_to_lower(char *buf, size_t len, int *index,
                                       const char *p) {
  char atom[MAXATOMLEN] = {0};
  char *q = atom;

  for (; *p; p++, q++)
    *q = tolower((int)(unsigned char)*p);

  return alcove_encode_atom(buf, len, index, atom);
}