/*
  Copyright 2011-2021 David Robillard <d@drobilla.net>

  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.

  THIS 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 "string_utils.h"

#include "serd/serd.h"

#include <stdint.h>
#include <stdlib.h>

void
serd_free(void* const ptr)
{
  free(ptr);
}

const char*
serd_strerror(const SerdStatus status)
{
  switch (status) {
  case SERD_SUCCESS:
    return "Success";
  case SERD_FAILURE:
    return "Non-fatal failure";
  case SERD_NO_DATA:
    return "Unexpected end of input";
  case SERD_UNKNOWN_ERROR:
    break;
  case SERD_OVERFLOW:
    return "Insufficient space";

  case SERD_BAD_ALLOC:
    return "Memory allocation failed";
  case SERD_BAD_ARG:
    return "Invalid argument";
  case SERD_BAD_CALL:
    return "Invalid call";
  case SERD_BAD_CURIE:
    return "Invalid CURIE or unknown namespace prefix";
  case SERD_BAD_CURSOR:
    return "Invalid cursor";
  case SERD_BAD_EVENT:
    return "Invalid event in stream";
  case SERD_BAD_INDEX:
    return "No optimal model index available";
  case SERD_BAD_LABEL:
    return "Clashing blank node label";
  case SERD_BAD_LITERAL:
    return "Invalid literal";
  case SERD_BAD_PATTERN:
    return "Invalid statement pattern";
  case SERD_BAD_READ:
    return "Error reading from file";
  case SERD_BAD_STACK:
    return "Stack overflow";
  case SERD_BAD_SYNTAX:
    return "Invalid syntax";
  case SERD_BAD_TEXT:
    return "Invalid text encoding";
  case SERD_BAD_URI:
    return "Invalid or unresolved URI";
  case SERD_BAD_WRITE:
    return "Error writing to file";
  }

  return "Unknown error";
}

int
serd_strncasecmp(const char* s1, const char* s2, size_t n)
{
  for (; n > 0 && *s2; s1++, s2++, --n) {
    if (serd_to_lower(*s1) != serd_to_lower(*s2)) {
      return ((*(const uint8_t*)s1 < *(const uint8_t*)s2) ? -1 : +1);
    }
  }

  return 0;
}