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f3a9b3758e
Use the UCS-2 upper case tables from nls, that are shared with smb. This code in JFS is hard to test, so we're only reusing the same tables (which are identical), not trying to reuse the rest of the helper functions. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Reviewed-by: Dave Kleikamp <dave.kleikamp@oracle.com> Signed-off-by: Steve French <stfrench@microsoft.com>
136 lines
3 KiB
C
136 lines
3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) International Business Machines Corp., 2000-2002
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* Portions Copyright (C) Christoph Hellwig, 2001-2002
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*/
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#ifndef _H_JFS_UNICODE
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#define _H_JFS_UNICODE
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#include <linux/slab.h>
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#include <asm/byteorder.h>
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#include "../nls/nls_ucs2_data.h"
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#include "jfs_types.h"
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extern int get_UCSname(struct component_name *, struct dentry *);
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extern int jfs_strfromUCS_le(char *, const __le16 *, int, struct nls_table *);
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#define free_UCSname(COMP) kfree((COMP)->name)
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/*
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* UniStrcpy: Copy a string
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*/
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static inline wchar_t *UniStrcpy(wchar_t * ucs1, const wchar_t * ucs2)
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{
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wchar_t *anchor = ucs1; /* save the start of result string */
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while ((*ucs1++ = *ucs2++));
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return anchor;
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}
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/*
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* UniStrncpy: Copy length limited string with pad
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*/
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static inline __le16 *UniStrncpy_le(__le16 * ucs1, const __le16 * ucs2,
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size_t n)
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{
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__le16 *anchor = ucs1;
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while (n-- && *ucs2) /* Copy the strings */
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*ucs1++ = *ucs2++;
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n++;
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while (n--) /* Pad with nulls */
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*ucs1++ = 0;
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return anchor;
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}
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/*
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* UniStrncmp_le: Compare length limited string - native to little-endian
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*/
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static inline int UniStrncmp_le(const wchar_t * ucs1, const __le16 * ucs2,
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size_t n)
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{
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if (!n)
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return 0; /* Null strings are equal */
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while ((*ucs1 == __le16_to_cpu(*ucs2)) && *ucs1 && --n) {
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ucs1++;
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ucs2++;
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}
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return (int) *ucs1 - (int) __le16_to_cpu(*ucs2);
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}
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/*
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* UniStrncpy_to_le: Copy length limited string with pad to little-endian
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*/
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static inline __le16 *UniStrncpy_to_le(__le16 * ucs1, const wchar_t * ucs2,
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size_t n)
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{
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__le16 *anchor = ucs1;
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while (n-- && *ucs2) /* Copy the strings */
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*ucs1++ = cpu_to_le16(*ucs2++);
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n++;
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while (n--) /* Pad with nulls */
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*ucs1++ = 0;
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return anchor;
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}
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/*
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* UniStrncpy_from_le: Copy length limited string with pad from little-endian
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*/
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static inline wchar_t *UniStrncpy_from_le(wchar_t * ucs1, const __le16 * ucs2,
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size_t n)
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{
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wchar_t *anchor = ucs1;
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while (n-- && *ucs2) /* Copy the strings */
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*ucs1++ = __le16_to_cpu(*ucs2++);
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n++;
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while (n--) /* Pad with nulls */
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*ucs1++ = 0;
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return anchor;
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}
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/*
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* UniToupper: Convert a unicode character to upper case
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*/
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static inline wchar_t UniToupper(wchar_t uc)
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{
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const struct UniCaseRange *rp;
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if (uc < sizeof(NlsUniUpperTable)) { /* Latin characters */
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return uc + NlsUniUpperTable[uc]; /* Use base tables */
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} else {
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rp = NlsUniUpperRange; /* Use range tables */
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while (rp->start) {
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if (uc < rp->start) /* Before start of range */
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return uc; /* Uppercase = input */
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if (uc <= rp->end) /* In range */
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return uc + rp->table[uc - rp->start];
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rp++; /* Try next range */
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}
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}
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return uc; /* Past last range */
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}
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/*
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* UniStrupr: Upper case a unicode string
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*/
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static inline wchar_t *UniStrupr(wchar_t * upin)
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{
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wchar_t *up;
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up = upin;
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while (*up) { /* For all characters */
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*up = UniToupper(*up);
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up++;
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}
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return upin; /* Return input pointer */
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}
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#endif /* !_H_JFS_UNICODE */
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