36 lines
829 B
C
36 lines
829 B
C
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/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#include <u.h>
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#include <libc.h>
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/*
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* Return pointer to first occurrence of s2 in s1,
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* 0 if none
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*/
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char*
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utfutf(const char *s1, const char *s2)
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{
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const char *p;
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int32_t f, n1, n2;
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Rune r;
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n1 = chartorune(&r, s2);
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f = r;
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if(f <= Runesync) /* represents self */
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return strstr(s1, s2);
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n2 = strlen(s2);
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for(p=s1; p=utfrune(p, f); p+=n1)
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if(strncmp(p, s2, n2) == 0)
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return (char*)p;
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return 0;
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}
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