cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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utf8n.h (1937B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright (c) 2014 SGI.
      4 * All rights reserved.
      5 */
      6
      7#ifndef UTF8NORM_H
      8#define UTF8NORM_H
      9
     10#include <linux/types.h>
     11#include <linux/export.h>
     12#include <linux/string.h>
     13#include <linux/module.h>
     14#include <linux/unicode.h>
     15
     16int utf8version_is_supported(const struct unicode_map *um, unsigned int version);
     17
     18/*
     19 * Determine the length of the normalized from of the string,
     20 * excluding any terminating NULL byte.
     21 * Returns 0 if only ignorable code points are present.
     22 * Returns -1 if the input is not valid UTF-8.
     23 */
     24ssize_t utf8nlen(const struct unicode_map *um, enum utf8_normalization n,
     25		const char *s, size_t len);
     26
     27/* Needed in struct utf8cursor below. */
     28#define UTF8HANGULLEAF	(12)
     29
     30/*
     31 * Cursor structure used by the normalizer.
     32 */
     33struct utf8cursor {
     34	const struct unicode_map *um;
     35	enum utf8_normalization n;
     36	const char	*s;
     37	const char	*p;
     38	const char	*ss;
     39	const char	*sp;
     40	unsigned int	len;
     41	unsigned int	slen;
     42	short int	ccc;
     43	short int	nccc;
     44	unsigned char	hangul[UTF8HANGULLEAF];
     45};
     46
     47/*
     48 * Initialize a utf8cursor to normalize a string.
     49 * Returns 0 on success.
     50 * Returns -1 on failure.
     51 */
     52int utf8ncursor(struct utf8cursor *u8c, const struct unicode_map *um,
     53		enum utf8_normalization n, const char *s, size_t len);
     54
     55/*
     56 * Get the next byte in the normalization.
     57 * Returns a value > 0 && < 256 on success.
     58 * Returns 0 when the end of the normalization is reached.
     59 * Returns -1 if the string being normalized is not valid UTF-8.
     60 */
     61extern int utf8byte(struct utf8cursor *u8c);
     62
     63struct utf8data {
     64	unsigned int maxage;
     65	unsigned int offset;
     66};
     67
     68struct utf8data_table {
     69	const unsigned int *utf8agetab;
     70	int utf8agetab_size;
     71
     72	const struct utf8data *utf8nfdicfdata;
     73	int utf8nfdicfdata_size;
     74
     75	const struct utf8data *utf8nfdidata;
     76	int utf8nfdidata_size;
     77
     78	const unsigned char *utf8data;
     79};
     80
     81extern struct utf8data_table utf8_data_table;
     82
     83#endif /* UTF8NORM_H */