#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "query.h"

void
setqs()
{
	qs = getenv("QUERY_STRING");
	if(!qs){
		fprintf(stderr, "no QUERY_STRING\n");
		exit(1);
	}
}

char *
query(char *key)
{
	char *w;
	int n;
	
	for(w = strtok(qs, "&"); w; w = strtok(NULL, "&")){
		n = strcspn(w, "=");
		if(strncmp(w, key, n) == 0)
			return w + n + (w[n] == '=');
	}
	
	return NULL;
}