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

#include "ftsbench.h"

void 
sb_add(StringBuf *b, char *s, int length)
{
	if ( length <=0 )
		length = strlen(s);

	if ( b->strlen + length + 1 >= b->length ) {
		if ( b->str == NULL || b->length == 0 ) {
			b->length = (length + 1)*4;
			b->str = (char*)malloc( sizeof(char) * b->length );
		} else {
			do 
				b->length *= 2;
			while( b->strlen + length + 1 >= b->length );
			b->str = (char*)realloc( b->str, sizeof(char) * b->length );
		}

		if (!b->str) {
			fprintf(stderr,"Not enough memory (%d bytes)\n", b->length);
			exit(1);
		}
	}

	memcpy(b->str + b->strlen, s, length);
	b->strlen += length;
	b->str[ b->strlen ] = '\0';
}