/*
 * Author: Jean-Marc Lienher ( http://oksid.ch )
 * Copyright 2000-2010 by O'ksi'D.
 *
 * This library is free software. Distribution and use rights are outlined in
 * the file "COPYING" which should have been included with this file.  If this
 * file is missing or damaged, see the license at:
 *
 *     https://www.fltk.org/COPYING.php
 *
 * Please see the following page on how to report bugs and issues:
 *
 *     https://www.fltk.org/bugs.php
 */

/*
 * This file is required on all platforms for UTF-8 support
 */

#include "../utf8_internal.h"
#include <stdlib.h>

/* include UCS tables */
#include "headers/case.h"

int
XUtf8Tolower(int ucs) {
  int ret;
  if (ucs <= 0x02B6) {
    if (ucs >= 0x0041) {
      ret = ucs_table_0041[ucs - 0x0041];
      if (ret > 0) return ret;
    }
    return ucs;
  }

  if (ucs <= 0x0556) {
    if (ucs >= 0x0386) {
      ret = ucs_table_0386[ucs - 0x0386];
      if (ret > 0) return ret;
    }
    return ucs;
  }

  if (ucs <= 0x10C5) {
    if (ucs >= 0x10A0) {
      ret = ucs_table_10A0[ucs - 0x10A0];
      if (ret > 0) return ret;
    }
    return ucs;
  }

  if (ucs <= 0x1FFC) {
    if (ucs >= 0x1E00) {
      ret = ucs_table_1E00[ucs - 0x1E00];
      if (ret > 0) return ret;
    }
    return ucs;
  }

  if (ucs <= 0x2133) {
    if (ucs >= 0x2102) {
      ret = ucs_table_2102[ucs - 0x2102];
      if (ret > 0) return ret;
    }
    return ucs;
  }

  if (ucs <= 0x24CF) {
    if (ucs >= 0x24B6) {
      ret = ucs_table_24B6[ucs - 0x24B6];
      if (ret > 0) return ret;
    }
    return ucs;
  }

  if (ucs <= 0x33CE) {
    if (ucs >= 0x33CE) {
      ret = ucs_table_33CE[ucs - 0x33CE];
      if (ret > 0) return ret;
    }
    return ucs;
  }

  if (ucs <= 0xFF3A) {
    if (ucs >= 0xFF21) {
      ret = ucs_table_FF21[ucs - 0xFF21];
      if (ret > 0) return ret;
    }
    return ucs;
  }

  return ucs;
}

int
XUtf8Toupper(int ucs) {
  int i;
  static unsigned short *table = NULL;

  if (!table) {
    table = (unsigned short*) malloc(sizeof(unsigned short) * 0x10000);
    for (i = 0; i < 0x10000; i++) {
      table[i] = (unsigned short) i;
    }
    for (i = 0; i < 0x10000; i++) {
      int l;
      l = XUtf8Tolower(i);
      if (l != i) table[l] = (unsigned short) i;
    }
  }
  if (ucs >= 0x10000 || ucs < 0) return ucs;
  return table[ucs];
}
