Subversion Repositories planix.SVN

#include <u.h>

#include <libc.h>

#include "String.h"

/* grow a String's allocation by at least `incr' bytes */

extern String*

s_grow(String *s, int incr)	

{

	char *cp;

	int size;

	if(s->fixed)

		sysfatal("s_grow of constant string");

	s = s_unique(s);

	/*

	 *  take a larger increment to avoid mallocing too often

	 */

	size = s->end-s->base;

	if(size/2 < incr)

		size += incr;

	else

		size += size/2;

	cp = realloc(s->base, size);

	if (cp == 0)

		sysfatal("s_grow: %r");

	s->ptr = (s->ptr - s->base) + cp;

	s->end = cp + size;

	s->base = cp;

	return s;

}