/* xa65 - 65xx/65816 cross-assembler and utility suite
 *
 * Copyright (C) 1989-1997 André Fachat (a.fachat@physik.tu-chemnitz.de)
 *
 * Options module (handles pass options and writing them out to disk)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

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

#include "xah.h"
#include "xar.h"
#include "xa.h"
#include "xat.h"
#include "xao.h"

/*
static Fopt 	*olist =NULL;
static int 	mlist  =0;
static int 	nlist  =0;
*/

/* sets file option after pass 1 */
void set_fopt(int l, signed char *buf, int reallen) {
/*printf("set_fopt(%s, l=%d\n",buf,l);*/
	while(afile->fo.mlist<=afile->fo.nlist) {
	  afile->fo.mlist +=5;
	  afile->fo.olist = realloc(afile->fo.olist, afile->fo.mlist*sizeof(Fopt));
	  if(!afile->fo.olist) {	
	    fprintf(stderr, "Fatal: Couldn't alloc memory (%lu bytes) for fopt list!\n",
						(unsigned long)(
					afile->fo.mlist*sizeof(Fopt)));
	    exit(1);
	  }
	}
	afile->fo.olist[afile->fo.nlist].text=malloc(l);
	if(!afile->fo.olist[afile->fo.nlist].text) {
	  fprintf(stderr, "Fatal: Couldn't alloc memory (%d bytes) for fopt!\n",l);
	  exit(1);
	}
	memcpy(afile->fo.olist[afile->fo.nlist].text, buf, l);
	afile->fo.olist[afile->fo.nlist++].len = reallen;
}

/* writes file options to a file */
void o_write(FILE *fp) {
	int i,j,l,afl;
	signed char *t;

	for(i=0;i<afile->fo.nlist;i++) {
	  l=afile->fo.olist[i].len;
	  t=afile->fo.olist[i].text;
/* do not optimize */
	  t_p2(t, &l, 1, &afl);
	
	  if(l>254) {
	    errout(E_OPTLEN);
	  } else {
	    fputc((l+1)&0xff,fp);
	  }
          for(j=0;j<l;j++) { 
	    fputc(t[j],fp);
	    /*printf("%02x ", t[j]); */
	  }
	  /*printf("\n");*/
	}
	fputc(0,fp);		/* end option list */

	for(i=0;i<afile->fo.nlist;i++) {
	  free(afile->fo.olist[i].text);
	}
	free(afile->fo.olist);
	afile->fo.olist = NULL;
	afile->fo.nlist = 0;
	afile->fo.mlist = 0;
}

size_t o_length(void) {
	int i;
	size_t n = 0;
	for(i=0;i<afile->fo.nlist;i++) {
/*printf("found option: %s, len=%d, n=%d\n", afile->fo.olist[i].text, afile->fo.olist[i].len,n);*/
	  n += afile->fo.olist[i].len +1;
	}
	return ++n;
}