// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *   Some of the source code in this file came from fs/cifs/uniupr.h
 *   Copyright (c) International Business Machines  Corp., 2000,2002
 *
 *   Some of the source code in this file came from fs/cifs/cifs_unicode.c
 *
 *   Copyright (c) International Business Machines  Corp., 2000,2009
 *   Modified by Steve French (sfrench@us.ibm.com)
 *   Modified by Namjae Jeon (linkinjeon@kernel.org)
 *
 */
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/unaligned.h>
#include "nls_ucs2_utils.h"

MODULE_DESCRIPTION("NLS UCS-2");
MODULE_LICENSE("GPL");

/*
 * Latin upper case
 */
signed char NlsUniUpperTable[512] = {
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 000-00f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 010-01f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 020-02f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 030-03f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 040-04f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 050-05f */
        0, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32,
                                -32, -32, -32, -32, -32,        /* 060-06f */
        -32, -32, -32, -32, -32, -32, -32, -32, -32, -32,
                                -32, 0, 0, 0, 0, 0,     /* 070-07f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 080-08f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 090-09f */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0a0-0af */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0b0-0bf */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0c0-0cf */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0d0-0df */
        -32, -32, -32, -32, -32, -32, -32, -32, -32, -32,
                         -32, -32, -32, -32, -32, -32,  /* 0e0-0ef */
        -32, -32, -32, -32, -32, -32, -32, 0, -32, -32,
                         -32, -32, -32, -32, -32, 121,  /* 0f0-0ff */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 100-10f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 110-11f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 120-12f */
        0, 0, 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, -1, 0, -1, 0,   /* 130-13f */
        -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, -1, 0, -1, /* 140-14f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 150-15f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 160-16f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, -1, 0, -1, 0,  /* 170-17f */
        0, 0, 0, -1, 0, -1, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0,     /* 180-18f */
        0, 0, -1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0,       /* 190-19f */
        0, -1, 0, -1, 0, -1, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0,    /* 1a0-1af */
        -1, 0, 0, 0, -1, 0, -1, 0, 0, -1, 0, 0, 0, -1, 0, 0,    /* 1b0-1bf */
        0, 0, 0, 0, 0, -1, -2, 0, -1, -2, 0, -1, -2, 0, -1, 0,  /* 1c0-1cf */
        -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, -79, 0, -1, /* 1d0-1df */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e0-1ef */
        0, 0, -1, -2, 0, -1, 0, 0, 0, -1, 0, -1, 0, -1, 0, -1,  /* 1f0-1ff */
};
EXPORT_SYMBOL_GPL(NlsUniUpperTable);

/* Upper case range - Greek */
static signed char UniCaseRangeU03a0[47] = {
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -38, -37, -37, -37, /* 3a0-3af */
        0, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32,
                                         -32, -32, -32, -32,    /* 3b0-3bf */
        -32, -32, -31, -32, -32, -32, -32, -32, -32, -32, -32, -32, -64,
        -63, -63,
};

/* Upper case range - Cyrillic */
static signed char UniCaseRangeU0430[48] = {
        -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32,
                                         -32, -32, -32, -32,    /* 430-43f */
        -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32,
                                         -32, -32, -32, -32,    /* 440-44f */
        0, -80, -80, -80, -80, -80, -80, -80, -80, -80, -80,
                                         -80, -80, 0, -80, -80, /* 450-45f */
};

/* Upper case range - Extended cyrillic */
static signed char UniCaseRangeU0490[61] = {
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 490-49f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 4a0-4af */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 4b0-4bf */
        0, 0, -1, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1,
};

/* Upper case range - Extended latin and greek */
static signed char UniCaseRangeU1e00[509] = {
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e00-1e0f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e10-1e1f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e20-1e2f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e30-1e3f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e40-1e4f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e50-1e5f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e60-1e6f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e70-1e7f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e80-1e8f */
        0, -1, 0, -1, 0, -1, 0, 0, 0, 0, 0, -59, 0, -1, 0, -1,  /* 1e90-1e9f */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ea0-1eaf */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1eb0-1ebf */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ec0-1ecf */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ed0-1edf */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ee0-1eef */
        0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, 0, 0, 0, 0, 0,    /* 1ef0-1eff */
        8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f00-1f0f */
        8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f10-1f1f */
        8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f20-1f2f */
        8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f30-1f3f */
        8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f40-1f4f */
        0, 8, 0, 8, 0, 8, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f50-1f5f */
        8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f60-1f6f */
        74, 74, 86, 86, 86, 86, 100, 100, 0, 0, 112, 112,
                                 126, 126, 0, 0,        /* 1f70-1f7f */
        8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f80-1f8f */
        8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f90-1f9f */
        8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fa0-1faf */
        8, 8, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fb0-1fbf */
        0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fc0-1fcf */
        8, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fd0-1fdf */
        8, 8, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fe0-1fef */
        0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};

/* Upper case range - Wide latin */
static signed char UniCaseRangeUff40[27] = {
        0, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32,
                         -32, -32, -32, -32, -32,       /* ff40-ff4f */
        -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32,
};

/*
 * Upper Case Range
 */
const struct UniCaseRange NlsUniUpperRange[] = {
        {0x03a0, 0x03ce, UniCaseRangeU03a0},
        {0x0430, 0x045f, UniCaseRangeU0430},
        {0x0490, 0x04cc, UniCaseRangeU0490},
        {0x1e00, 0x1ffc, UniCaseRangeU1e00},
        {0xff40, 0xff5a, UniCaseRangeUff40},
        {0}
};
EXPORT_SYMBOL_GPL(NlsUniUpperRange);