1 /* 2 * linux/fs/hfs/trans.c 3 * 4 * Copyright (C) 1995-1997 Paul H. Hargrove 5 * This file may be distributed under the terms of the GNU General Public License. 6 * 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. 10 */ 11 12 #include "hfs_fs.h" 13 14 /*================ Global functions ================*/ 15 16 /* 17 * hfs_mac2triv() 18 * 19 * Given a 'Pascal String' (a string preceded by a length byte) in 20 * the Macintosh character set produce the corresponding filename using 21 * the 'trivial' name-mangling scheme, returning the length of the 22 * mangled filename. Note that the output string is not NULL 23 * terminated. 24 * 25 * The name-mangling works as follows: 26 * The character '/', which is illegal in Linux filenames is replaced 27 * by ':' which never appears in HFS filenames. All other characters 28 * are passed unchanged from input to output. 29 */ 30 int hfs_mac2triv(char *out, const struct hfs_name *in) 31 { 32 const char *p; 33 char c; 34 int i, len; 35 36 len = in->len; 37 p = in->name; 38 for (i = 0; i < len; i++) { 39 c = *p++; 40 *out++ = c == '/' ? ':' : c; 41 } 42 return i; 43 } 44 45 /* 46 * hfs_triv2mac() 47 * 48 * Given an ASCII string (not null-terminated) and its length, 49 * generate the corresponding filename in the Macintosh character set 50 * using the 'trivial' name-mangling scheme, returning the length of 51 * the mangled filename. Note that the output string is not NULL 52 * terminated. 53 * 54 * This routine is a inverse to hfs_mac2triv(). 55 * A ':' is replaced by a '/'. 56 */ 57 void hfs_triv2mac(struct hfs_name *out, struct qstr *in) 58 { 59 const char *src; 60 char *dst, c; 61 int i, len; 62 63 out->len = len = min((unsigned int)HFS_NAMELEN, in->len); 64 src = in->name; 65 dst = out->name; 66 for (i = 0; i < len; i++) { 67 c = *src++; 68 *dst++ = c == ':' ? '/' : c; 69 } 70 for (; i < HFS_NAMELEN; i++) 71 *dst++ = 0; 72 } 73