1 /* 2 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 3 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> 4 * at Electronni Visti IA, Kiev, Ukraine. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "lint.h" 30 #include <stdlib.h> 31 #include <string.h> 32 #include <errno.h> 33 #include <wchar.h> 34 #include <assert.h> 35 #include "collate.h" 36 37 size_t 38 strxfrm(char *_RESTRICT_KYWD xf, const char *_RESTRICT_KYWD src, size_t dlen) 39 { 40 size_t slen; 41 size_t xlen; 42 wchar_t *wcs = NULL; 43 44 if (!*src) { 45 if (dlen > 0) 46 *xf = '\0'; 47 return (0); 48 } 49 50 /* 51 * The conversion from multibyte to wide character strings is 52 * strictly reducing (one byte of an mbs cannot expand to more 53 * than one wide character.) 54 */ 55 slen = strlen(src); 56 57 if (_collate_load_error) 58 goto error; 59 60 if ((wcs = malloc((slen + 1) * sizeof (wchar_t))) == NULL) 61 goto error; 62 63 if (mbstowcs(wcs, src, slen + 1) == (size_t)-1) 64 goto error; 65 66 if ((xlen = _collate_sxfrm(wcs, xf, dlen)) == (size_t)-1) 67 goto error; 68 69 if (wcs) 70 free(wcs); 71 72 if (dlen > xlen) { 73 xf[xlen] = 0; 74 } else if (dlen) { 75 xf[dlen-1] = 0; 76 } 77 78 return (xlen); 79 80 error: 81 /* errno should be set to ENOMEM if malloc failed */ 82 if (wcs) 83 free(wcs); 84 (void) strlcpy(xf, src, dlen); 85 86 return (slen); 87 } 88