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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: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE |
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| 28 | * DESCRIBE IT HERE! |
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| 29 | * |
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| 30 | ****************************************************************************/ |
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| 31 | |||
| 32 | |||
| 33 | #include "variety.h" |
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| 34 | #include "widechar.h" |
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| 35 | #include |
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| 36 | #include |
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| 37 | #include "setbits.h" |
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| 38 | |||
| 39 | /* The strcspn function computes the length of the initial segment of the |
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| 40 | string pointed to by str which consists entirely of characters not from |
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| 41 | the string pointed to by charset. The terminating NULL character is not |
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| 42 | considered part of charset. |
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| 43 | */ |
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| 44 | |||
| 45 | |||
| 46 | _WCRTLINK size_t __F_NAME(strcspn,wcscspn) ( const CHAR_TYPE *str, const CHAR_TYPE *charset ) |
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| 47 | { |
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| 48 | #if defined(__WIDECHAR__) |
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| 49 | |||
| 50 | const CHAR_TYPE *p1; |
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| 51 | const CHAR_TYPE *p2; |
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| 52 | CHAR_TYPE tc1; |
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| 53 | CHAR_TYPE tc2; |
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| 54 | size_t len; |
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| 55 | |||
| 56 | len = 0; |
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| 57 | for( p1 = str; tc1 = *p1; p1++, len++ ) { |
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| 58 | for( p2 = charset; tc2 = *p2; p2++ ) { |
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| 59 | if( tc1 == tc2 ) break; |
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| 60 | } |
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| 61 | if( tc2 != NULLCHAR ) break; |
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| 62 | } |
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| 63 | return( len ); |
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| 64 | |||
| 65 | #else |
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| 66 | unsigned /*char*/ tc; |
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| 67 | unsigned char vector[32]; |
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| 68 | size_t len; |
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| 69 | |||
| 70 | __setbits( vector, charset ); |
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| 71 | len = 0; |
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| 72 | for( ; tc = (unsigned char) *str; ++len, ++str ) { |
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| 73 | /* quit if we find any char in charset */ |
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| 74 | if( ( vector[ tc >> 3 ] & _Bits[ tc & 0x07 ] ) != 0 ) break; |
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| 75 | } |
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| 76 | return( len ); |
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| 77 | #endif |
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| 78 | } |