#include "agent.h" static voidgrow(String *s, int n){	if(n > s->m) {		s->s = erealloc(s->s, n);		s->m = n;	}} voidappend(String *s, char *b){	int on; 	on = s->n;	s->n += strlen(b);	grow(s, s->n);	strcpy(s->s+on-1, b);} voidappendn(String *s, char *b, int n){	int on; 	on = s->n;	s->n += n;	grow(s, s->n);	memmove(s->s+on-1, b, n);	s->s[s->n-1] = '\0';} voidresetstring(String *s){	s->n = 1;	grow(s, s->n);	s->s[0] = '\0';} String*mkstring(char *a){	String *s; 	s = emalloc(sizeof(*s));	s->n = strlen(a)+1;	grow(s, s->n);	strcpy(s->s, a);	s->ref = 1;	return s;} voidfreestring(String *s){	if(s == nil)		return; 	memset(s->s, 0xFF, s->m);	free(s->s);	s->ref = 0;	s->s = (char*)0xDeadBeef;	s->n = 100;	s->m = 100;	free(s);} String*copystring(String *s){	String *t; 	t = emalloc(sizeof(*t));	t->n = s->n;	grow(t, t->n);	t->ref = 1;	strcpy(t->s, s->s);	return t;}