string.c


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#include<u.h>
#include<libc.h>
#include<mheap.h>

const char *
hprint(char *fmt, ...)
{
	char *buf, *hbuf;
	int len, n;
	va_list args;
	
	/* Initial buffer */
	len = 512;
	buf = nil;
	
	do{
		len <<= 1;
		buf = realloc(buf, len);
		if(buf == nil)
			sysfatal("hsprint: %r");
		
		va_start(args, fmt);
		n = vsnprint(buf, len, fmt, args) + 1;
		va_end(args);
	}while(n == len);
	
	hbuf = halloc(n);
	memmove(hbuf, buf, n);
	free(buf);
	
	return hbuf;
}

const char *
hstrdup(char *s)
{
	char *u;
	
	u = halloc(strlen(s) + 1);
	memmove(u, s, strlen(s) + 1);
	return u;
}