| /* |

| * Copyright (C) 1999-2001, 2016 Free Software Foundation, Inc. |

| * This file is part of the GNU LIBICONV Library. |

| * |

| * The GNU LIBICONV Library is free software; you can redistribute it |

| * and/or modify it under the terms of the GNU Lesser General Public |

| * License as published by the Free Software Foundation; either version 2.1 |

| * of the License, or (at your option) any later version. |

| * |

| * The GNU LIBICONV Library 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 |

| * Lesser General Public License for more details. |

| * |

| * You should have received a copy of the GNU Lesser General Public |

| * License along with the GNU LIBICONV Library; see the file COPYING.LIB. |

| * If not, see <https://www.gnu.org/licenses/>. |

| */ |

| |

| /* |

| * UCS-2-SWAPPED = UCS-2-INTERNAL with inverted endianness |

| */ |

| |

| static int |

| ucs2swapped_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n) |

| { |

| /* This function assumes that 'unsigned short' has exactly 16 bits. */ |

| if (sizeof(unsigned short) != 2) abort(); |

| |

| if (n >= 2) { |

| unsigned short x = *(const unsigned short *)s; |

| x = (x >> 8) | (x << 8); |

| if (x >= 0xd800 && x < 0xe000) { |

| return RET_ILSEQ; |

| } else { |

| *pwc = x; |

| return 2; |

| } |

| } |

| return RET_TOOFEW(0); |

| } |

| |

| static int |

| ucs2swapped_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n) |

| { |

| /* This function assumes that 'unsigned short' has exactly 16 bits. */ |

| if (sizeof(unsigned short) != 2) abort(); |

| |

| if (wc < 0x10000 && !(wc >= 0xd800 && wc < 0xe000)) { |

| if (n >= 2) { |

| unsigned short x = wc; |

| x = (x >> 8) | (x << 8); |

| *(unsigned short *)r = x; |

| return 2; |

| } else |

| return RET_TOOSMALL; |

| } else |

| return RET_ILUNI; |

| } |