1 '\" te 2 .\" Copyright 2014 Garrett D'Amore <garrett@damore.org> 3 .\" Copyright 1989 AT&T. Copyright (c) 2003, Sun Microsystems, Inc. All Rights Reserved. Portions Copyright (c) 1992, X/Open Company Limited. All Rights Reserved. 4 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at 5 .\" http://www.opengroup.org/bookstore/. 6 .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html. 7 .\" This notice shall appear on any product containing this material. 8 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License. 9 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License. 10 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] 11 .TH STRXFRM 3C "Jun 21, 2014" 12 .SH NAME 13 strxfrm, strxfrm_l \- string transformation 14 .SH SYNOPSIS 15 .LP 16 .nf 17 #include <string.h> 18 19 \fBsize_t\fR \fBstrxfrm\fR(\fBchar *restrict\fR \fIs1\fR, \fBconst char *restrict\fR \fIs2\fR, \fBsize_t\fR \fIn\fR); 20 .fi 21 .LP 22 .nf 23 \fBsize_t\fR \fBstrxfrm_l\fR(\fBchar *restrict\fR \fIs1\fR, \fBconst char *restrict\fR \fIs2\fR, \fBsize_t\fR \fIn\fR, 24 \fBlocale_t\fR \fIloc\fR); 25 .fi 26 .SH DESCRIPTION 27 .LP 28 The \fBstrxfrm()\fR function transforms the string pointed to by \fIs2\fR and 29 places the resulting string into the array pointed to by \fIs1\fR. The 30 transformation is such that if \fBstrcmp\fR(3C) is applied to two transformed 31 strings, it returns a value greater than, equal to or less than \fB0\fR, 32 corresponding to the result of \fBstrcoll\fR(3C) applied to the same two 33 original strings. No more than \fIn\fR bytes are placed into the resulting 34 array pointed to by \fIs1\fR, including the terminating null byte. If \fIn\fR 35 is \fB0\fR, \fIs1\fR is permitted to be a null pointer. If copying takes place 36 between objects that overlap, the behavior is undefined. 37 .LP 38 The \fBstrxfrm()\fR function does not change the setting of \fBerrno\fR if 39 successful. 40 .LP 41 Since no return value is reserved to indicate an error, an application wishing 42 to check for error situations should set \fBerrno\fR to 0, then call 43 \fBstrxfrm()\fR, then check \fBerrno\fR. 44 .LP 45 The \fBstrxfrm_l()\fR functions behaves identically to the function 46 \fBstrxfrm()\fR, except instead of operating in the current locale it 47 operates in the locale specified by the argument \fIloc\fR. 48 .SH RETURN VALUES 49 .LP 50 Upon successful completion, \fBstrxfrm()\fR returns the length of the 51 transformed string (not including the terminating null byte). If the value 52 returned is \fIn\fR or more, the contents of the array pointed to by \fIs1\fR 53 are indeterminate. 54 .LP 55 On error, \fBstrxfrm()\fR may set \fBerrno\fR but no return value is reserved 56 to indicate the error. 57 .SH USAGE 58 .LP 59 The transformation function is such that two transformed strings can be ordered 60 by \fBstrcmp\fR(3C) as appropriate to collating sequence information in the 61 locale (category \fBLC_COLLATE\fR). 62 .LP 63 The fact that when \fIn\fR is \fB0\fR, \fIs1\fR is permitted to be a null 64 pointer, is useful to determine the size of the \fIs1\fR array prior to making 65 the transformation. 66 .SH EXAMPLES 67 .LP 68 \fBExample 1 \fRA sample of using the \fBstrxfm()\fR function. 69 .LP 70 The value of the following expression is the size of the array needed to hold 71 the transformation of the string pointed to by \fIs\fR. 72 73 .sp 74 .in +2 75 .nf 76 1 + strxfrm(NULL, s, 0); 77 .fi 78 .in -2 79 80 .SH FILES 81 .IP \fB/usr/lib/locale/\fR\fIlocale\fR\fB/LC_COLLATE/* 82 collation database for \fIlocale\fR 83 .SH ATTRIBUTES 84 .LP 85 See \fBattributes\fR(5) for descriptions of the following attributes: 86 .TS 87 box; 88 c | c 89 l | l . 90 ATTRIBUTE TYPE ATTRIBUTE VALUE 91 _ 92 CSI Enabled 93 _ 94 Interface Stability Standard 95 _ 96 MT-Level MT-Safe 97 .TE 98 99 .SH SEE ALSO 100 .LP 101 \fBlocaledef\fR(1), \fBnewlocale\fR(3C), \fBsetlocale\fR(3C), \fBstrcmp\fR(3C), 102 \fBstrcoll\fR(3C), \fBuselocale\fR(3C), 103 \fBwscoll\fR(3C), \fBattributes\fR(5), \fBenviron\fR(5), \fBstandards\fR(5)