author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 02:01:42 +0200 | |
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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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* <<strncpy>>---counted copy string |
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* INDEX |
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* strncpy |
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* ANSI_SYNOPSIS |
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* #include <string.h> |
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* char *strncpy(char *<[dst]>, const char *<[src]>, size_t <[length]>); |
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* TRAD_SYNOPSIS |
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* #include <string.h> |
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* char *strncpy(<[dst]>, <[src]>, <[length]>) |
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* char *<[dst]>; |
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* char *<[src]>; |
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* size_t <[length]>; |
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* <<strncpy>> copies not more than <[length]> characters from the |
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* the string pointed to by <[src]> (including the terminating |
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* null character) to the array pointed to by <[dst]>. If the |
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* string pointed to by <[src]> is shorter than <[length]> |
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* characters, null characters are appended to the destination |
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* array until a total of <[length]> characters have been |
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* RETURNS |
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* This function returns the initial value of <[dst]>. |
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* PORTABILITY |
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* <<strncpy>> is ANSI C. |
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* <<strncpy>> requires no supporting OS subroutines. |
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* QUICKREF |
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* strncpy 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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Copy characters from one string to another. |
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Copies the first num characters of src to dest. |
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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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@return dst is returned. |
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@param dst Destination string. Space allocated should be at least |
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num characters long. |
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@param src Null-terminated string. |
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@param n Number of characters to be copied. |
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*/ |
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EXPORT_C char *strncpy (char *dst, const char *src, size_t n) |
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{ |
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char *dscan; |
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const char *sscan; |
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size_t count; |
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|
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dscan = dst; |
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sscan = src; |
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count = n; |
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while (count > 0) |
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{ |
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--count; |
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if ((*dscan++ = *sscan++) == '\0') |
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break; |
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} |
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while (count-- > 0) |
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*dscan++ = '\0'; |
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return dst; |
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} |