41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/* strspn.c -- return numbers of chars at start of string in a class
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Copyright (C) 1987, 1990 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#if defined(HAVE_STRING_H)
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#include <string.h>
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#else
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#include <strings.h>
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#ifndef strchr
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#define strchr index
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#endif
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#endif
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int
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strspn (str, class)
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char *str, *class;
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{
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register char *st = str;
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while (*st && strchr (class, *st))
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++st;
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return st - str;
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}
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