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WebSVN – planix.SVN – Blame – /os/branches/feature_posix/sys/src/cmd/unix/drawterm/gui-win32/wstrtoutf.c – Rev 2

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#include <u.h>
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#include <libc.h>
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int
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wstrutflen(Rune *s)
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{
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	int n;
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	for(n=0; *s; n+=runelen(*s),s++)
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		;
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	return n;
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}
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int
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wstrtoutf(char *s, Rune *t, int n)
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{
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	int i;
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	char *s0;
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	s0 = s;
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	if(n <= 0)
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		return wstrutflen(t)+1;
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	while(*t) {
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		if(n < UTFmax+1 && n < runelen(*t)+1) {
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			*s = 0;
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			return i+wstrutflen(t)+1;
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		}
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		i = runetochar(s, t);
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		s += i;
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		n -= i;
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		t++;
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	}
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	*s = 0;
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	return s-s0;
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}