66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
/* strpbrk.c - string search, string */
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/* Copyright 1992-1993 Wind River Systems, Inc. */
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/*
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modification history
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--------------------
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01c,25feb93,jdi documentation cleanup for 5.1.
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01b,20sep92,smb documentation additions
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01a,08jul92,smb written and documented.
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*/
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/*
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DESCRIPTION
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INCLUDE FILES: string.h
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SEE ALSO: American National Standard X3.159-1989
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NOMANUAL
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*/
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#include "vxWorks.h"
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#include "string.h"
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/*******************************************************************************
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*
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* strpbrk - find the first occurrence in a string of a character from a given set (ANSI)
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*
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* This routine locates the first occurrence in string <s1> of any character
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* from string <s2>.
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*
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* INCLUDE FILES: string.h
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*
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* RETURNS:
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* A pointer to the character found in <s1>, or
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* NULL if no character from <s2> occurs in <s1>.
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*
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* SEE ALSO: strcspn()
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*/
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char * strpbrk
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(
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const char * s1, /* string to search */
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const char * s2 /* set of characters to look for in <s1> */
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)
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{
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char *scanp;
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int c;
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int sc;
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while ((c = *s1++) != 0) /* wait until end of string */
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{
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/* loop, searching for character */
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for (scanp = CHAR_FROM_CONST(s2); (sc = *scanp++) != 0;)
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{
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if (sc == c)
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return (CHAR_FROM_CONST(s1 - 1));
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}
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}
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return (NULL);
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}
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