4 * Copyright (C) 1995-1997 Paul H. Hargrove
5 * This file may be distributed under the terms of the GNU General Public License.
7 * This file contains routines for converting between the Macintosh
8 * character set and various other encodings. This includes dealing
9 * with ':' vs. '/' as the path-element separator.
12 #include <linux/types.h>
13 #include <linux/nls.h>
17 /*================ Global functions ================*/
22 * Given a 'Pascal String' (a string preceded by a length byte) in
23 * the Macintosh character set produce the corresponding filename using
24 * the 'trivial' name-mangling scheme, returning the length of the
25 * mangled filename. Note that the output string is not NULL
28 * The name-mangling works as follows:
29 * The character '/', which is illegal in Linux filenames is replaced
30 * by ':' which never appears in HFS filenames. All other characters
31 * are passed unchanged from input to output.
33 int hfs_mac2asc(struct super_block
*sb
, char *out
, const struct hfs_name
*in
)
35 struct nls_table
*nls_disk
= HFS_SB(sb
)->nls_disk
;
36 struct nls_table
*nls_io
= HFS_SB(sb
)->nls_io
;
39 int srclen
, dstlen
, size
;
43 if (srclen
> HFS_NAMELEN
)
46 dstlen
= HFS_MAX_NAMELEN
;
52 size
= nls_disk
->char2uni(src
, srclen
, &ch
);
65 size
= nls_io
->uni2char(ch
, dst
, dstlen
);
67 if (size
== -ENAMETOOLONG
)
79 *dst
++ = (ch
= *src
++) == '/' ? ':' : ch
;
88 * Given an ASCII string (not null-terminated) and its length,
89 * generate the corresponding filename in the Macintosh character set
90 * using the 'trivial' name-mangling scheme, returning the length of
91 * the mangled filename. Note that the output string is not NULL
94 * This routine is a inverse to hfs_mac2triv().
95 * A ':' is replaced by a '/'.
97 void hfs_asc2mac(struct super_block
*sb
, struct hfs_name
*out
, struct qstr
*in
)
99 struct nls_table
*nls_disk
= HFS_SB(sb
)->nls_disk
;
100 struct nls_table
*nls_io
= HFS_SB(sb
)->nls_io
;
103 int srclen
, dstlen
, size
;
108 dstlen
= HFS_NAMELEN
;
113 size
= nls_io
->char2uni(src
, srclen
, &ch
);
123 size
= nls_disk
->uni2char(ch
, dst
, dstlen
);
125 if (size
== -ENAMETOOLONG
)
133 *dst
++ = ch
> 0xff ? '?' : ch
;
142 while (--dstlen
>= 0)
143 *dst
++ = (ch
= *src
++) == ':' ? '/' : ch
;
146 out
->len
= dst
- (char *)out
->name
;
147 dstlen
= HFS_NAMELEN
- out
->len
;
148 while (--dstlen
>= 0)
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