/*
 * Based on an implementation by Brad Conroy (technosaurus) 
 * published on the Puppy Linux forums.
 *
 * This work is released to the Public Domain.
 * In locales that do not recognize public domain it is:
 * Copyright Brad Conroy 2012, permission is hereby granted to use this work in
 * accordance with any license approved by the Open Source Initiative for any 
 * purpose without restriction in perpetuity.
 */
#include <string.h>

int strverscmp(const char *l, const char *r)
{
	int ret=0, buf=0;
	while ( *l && *r && l[0]==r[0] ) {
		l++;
		r++;
	}
	do {
		ret=(10 * ret) + l++[0] - '0'; 
	} while ( '0' <= l[0] && l[0] <= '9') ;
	do {
		buf=(10 * buf) + r++[0] - '0'; 
	} while ( '0' <= r[0] && r[0] <= '9');
	return ret - buf;
}