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143 lines
3.1 KiB
143 lines
3.1 KiB
/* 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 "jfs_types.h" |
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typedef struct { |
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wchar_t start; |
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wchar_t end; |
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signed char *table; |
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} UNICASERANGE; |
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extern signed char UniUpperTable[512]; |
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extern UNICASERANGE UniUpperRange[]; |
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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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UNICASERANGE *rp; |
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if (uc < sizeof(UniUpperTable)) { /* Latin characters */ |
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return uc + UniUpperTable[uc]; /* Use base tables */ |
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} else { |
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rp = UniUpperRange; /* 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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