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WebSVN – planix.SVN – Blame – /os/branches/feature_unix/sys/src/libdraw/subfontname.c – Rev 2

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#include <u.h>
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#include <libc.h>
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#include <draw.h>
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/*
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 * Default version: convert to file name
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 */
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char*
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subfontname(char *cfname, char *fname, int maxdepth)
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{
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	char *t, *u, *tmp1, *tmp2;
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	int i;
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	t = strdup(cfname);  /* t is the return string */
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	if(strcmp(cfname, "*default*") == 0)
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		return t;
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	if(t[0] != '/'){
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		tmp2 = strdup(fname);
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		u = utfrrune(tmp2, '/');
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		if(u)
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			u[0] = 0;
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		else
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			strcpy(tmp2, ".");
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		tmp1 = smprint("%s/%s", tmp2, t);
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		free(tmp2);
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		free(t);
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		t = tmp1;
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	}
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	if(maxdepth > 8)
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		maxdepth = 8;
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	for(i=3; i>=0; i--){
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		if((1<<i) > maxdepth)
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			continue;
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		/* try i-bit grey */
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		tmp2 = smprint("%s.%d", t, i);
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		if(access(tmp2, AREAD) == 0) {
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			free(t);
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			return tmp2;
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		}
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		free(tmp2);
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	}
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	/* try default */
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	if(access(t, AREAD) == 0)
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		return t;
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	free(t);
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	return nil;
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}