author | Peter Fordham <peter.fordham@gmail.com> |
Mon, 22 Mar 2010 12:54:15 -0700 | |
branch | CompilerCompatibility |
changeset 11 | 8d1ef0d13f16 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* FUNCTION |
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* <<strxfrm>>---transform string |
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* INDEX |
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* strxfrm |
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* ANSI_SYNOPSIS |
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* #include <string.h> |
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* size_t strxfrm(char *<[s1]>, const char *<[s2]>, size_t <[n]>); |
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* TRAD_SYNOPSIS |
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* #include <string.h> |
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* size_t strxfrm(<[s1]>, <[s2]>, <[n]>); |
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* char *<[s1]>; |
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* char *<[s2]>; |
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* size_t <[n]>; |
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* This function transforms the string pointed to by <[s2]> and |
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* places the resulting string into the array pointed to by |
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* <[s1]>. The transformation is such that if the <<strcmp>> |
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* function is applied to the two transformed strings, it returns |
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* a value greater than, equal to, or less than zero, |
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* correspoinding to the result of a <<strcoll>> function applied |
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* to the same two original strings. |
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* No more than <[n]> characters are placed into the resulting |
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* array pointed to by <[s1]>, including the terminating null |
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* character. If <[n]> is zero, <[s1]> may be a null pointer. If |
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* copying takes place between objects that overlap, the behavior |
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* is undefined. |
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* With a C locale, this function just copies. |
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* RETURNS |
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* The <<strxfrm>> function returns the length of the transformed string |
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* (not including the terminating null character). If the value returned |
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* is <[n]> or more, the contents of the array pointed to by |
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* <[s1]> are indeterminate. |
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* PORTABILITY |
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* <<strxfrm>> is ANSI C. |
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* <<strxfrm>> requires no supporting OS subroutines. |
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* QUICKREF |
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* strxfrm ansi pure |
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* |
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* |
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*/ |
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|
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|
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|
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#include <string.h> |
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|
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/** |
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Transform string using locale settings. |
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Copies the first num characters of src to dest performing the apropiate |
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transformations for the current locale settings if needed. |
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No null-character is implicitly appended to dest after copying process. |
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So dest may not be null-terminated if no null-caracters are copied from src. |
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If num is greater than the length of src, dest is padded with zeros until num. |
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The behavor of this function is the same as strncpy but performing locale |
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character transformations. |
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@return The length of the transformed string without the null-character terminator. |
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@param s1 Destination string. Space allocated should be at least num characters long. |
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@param s2 Null-terminated string containing string to be transformed. |
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@param n Number of characters to be transformed and stored in dest. |
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*/ |
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EXPORT_C size_t |
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strxfrm (char *s1, const char *s2, size_t n) |
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{ |
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size_t res; |
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res = 0; |
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while (n-- > 0 && *s2) |
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{ |
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*s1++ = *s2++; |
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res++; |
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} |
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while (*s2) |
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{ |
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s2++; |
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res++; |
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} |
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|
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return res; |
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} |