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553 | serge | 1 | /**************************************************************************** |
2 | * |
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3 | * Open Watcom Project |
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4 | * |
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5 | * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. |
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6 | * |
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7 | * ======================================================================== |
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8 | * |
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9 | * This file contains Original Code and/or Modifications of Original |
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10 | * Code as defined in and that are subject to the Sybase Open Watcom |
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11 | * Public License version 1.0 (the 'License'). You may not use this file |
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12 | * except in compliance with the License. BY USING THIS FILE YOU AGREE TO |
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13 | * ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is |
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14 | * provided with the Original Code and Modifications, and is also |
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15 | * available at www.sybase.com/developer/opensource. |
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16 | * |
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17 | * The Original Code and all software distributed under the License are |
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18 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
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19 | * EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM |
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20 | * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
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21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR |
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22 | * NON-INFRINGEMENT. Please see the License for the specific language |
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23 | * governing rights and limitations under the License. |
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24 | * |
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25 | * ======================================================================== |
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26 | * |
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27 | * Description: Implementation of BSD style strlcpy() and wcslcpy(). |
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28 | * |
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29 | ****************************************************************************/ |
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30 | |||
31 | |||
32 | #include "variety.h" |
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33 | #include "widechar.h" |
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34 | #include |
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35 | |||
36 | |||
37 | _WCRTLINK size_t __F_NAME(strlcpy,wcslcpy)( CHAR_TYPE *dst, const CHAR_TYPE *src, size_t len ) |
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38 | { |
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39 | const CHAR_TYPE *s; |
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40 | size_t count; |
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41 | |||
42 | count = len; |
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43 | if( len ) { |
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44 | --len; // leave space for terminating null |
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45 | for( ; len; --len ) { |
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46 | if( *src == NULLCHAR ) { |
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47 | break; |
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48 | } |
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49 | *dst++ = *src++; |
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50 | } |
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51 | *dst = NULLCHAR; // terminate 'dst' |
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52 | } else { |
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53 | ++count; // account for not decrementing 'len' |
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54 | } |
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55 | |||
56 | if( !len ) { // source string was truncated |
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57 | s = src; |
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58 | while( *s != NULLCHAR ) { |
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59 | ++s; |
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60 | } |
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61 | count += s - src; // find out how long 'src' really is |
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62 | } |
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63 | return( count - len - 1 ); // final null doesn't count |
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64 | } |