/*----------------------------------------------------------------------*/
/*		LHarc List Command					*/
/*		This is part of LHarc UNIX Archiver Driver		*/
/*									*/
/*		Copyright(C) MCMLXXXIX  Yooichi.Tagawa			*/
/*									*/
/*  V0.00  Original				1988.05.23  Y.Tagawa	*/
/*  V1.00  Fixed				1989.09.22  Y.Tagawa	*/
/*  V1.01  Bug Fix for month name		1989.12.25  Y.Tagawa	*/
/*----------------------------------------------------------------------*/

#include "lharc.h"

static long packed_size_total;
static long original_size_total;
static int list_files;

/*----------------------------------------------------------------------*/
/*				Print Stuff				*/
/*----------------------------------------------------------------------*/

/* need 14 or 22 (when verbose_listing is TRUE) column spaces */
static void
print_size (packed_size, original_size)
     long packed_size, original_size;
{
  if (verbose_listing)
    printf ("%7d ", packed_size);

  printf ("%7d ", original_size);

  if (original_size == 0L)
    printf ("******");
  else
    printf ("%3d.%1d%%",
	    (int)((packed_size * 100L) / original_size),
	    (int)((packed_size * 1000L) / original_size) % 10);
}

/* need 12 or 17 (when verbose_listing is TRUE) column spaces */
static void
print_stamp (t)
     time_t t;
{
  static boolean got_now = FALSE;
  static time_t now;
  static unsigned int threshold;
  static char t_month[12*3+1] = "JanFebMarAprMayJunJulAugSepOctNovDec";
  struct tm *p;

  if (t == 0)
    {
	printf ("            "); /* 12 spaces */
      return;
    }

  if (!got_now)
    {
      now = time ((time_t*)0);
      p = localtime (&now);
      threshold = p->tm_year * 12 + p->tm_mon - 6;
      got_now = TRUE;
    }

  p = localtime (&t);

  if (p->tm_year * 12 + p->tm_mon > threshold)
	printf ("%.3s %2d %02d:%02d",
		&t_month[p->tm_mon * 3], p->tm_mday, p->tm_hour, p->tm_min);
  else
	printf ("%.3s %2d  %04d",
		&t_month[p->tm_mon * 3], p->tm_mday, p->tm_year + 1900);
}

static void
print_bar ()
{
  char *p, *q;
  /* 17+1+(0 or 7+1)+7+1+6+1+(0 or 1+4)+(12 or 17)+1+20 */
  /*       12345678901234567_  1234567_123456  _123456789012   1234 */

  if (verbose_listing)
    {
      p = "- ------ ---------- ";
      q = " -------------";
    }
  else
    {
      p = " ";
      q = " --------------------";
    }

  if (verbose)
    q = "";

  printf ("----------------- ------- ------%s------------%s\n", p, q);
}


/*----------------------------------------------------------------------*/
/*									*/
/*----------------------------------------------------------------------*/

static void
list_header ()
{
  char *p, *q;

  if (verbose_listing)
    {
      p = "PACKED    SIZE  RATIO        CRC   ";
      q = "       NAME";
    }
  else
    {
      p = "  SIZE  RATIO";
      q = "    NAME";
    }

  if (verbose)
    q = "";

  printf (" PERMSSN  UID GID  %s     STAMP%s\n", p, q);
#if 0
  printf (" PERMSSN  UID GID %s   SIZE  RATIO%s %s    STAMP%s%s\n",
	  verbose_listing ? " PACKED " : "",	/* 8,0 */
	  verbose_listing ? "  CRC" : "",	/* 5,0 */
	  verbose_listing ? "  " : "",		/* 2,0 */
	  verbose_listing ? "      " : "   ",		/* 6,3 */
	  verbose ? "" : " NAME");
#endif
  print_bar ();
}

static void
list_one (hdr)
     register LzHeader *hdr;
{
  register int mode;
  register char *p;
  char method[6];

  if (verbose)
    printf ("%s\n", hdr->name);

  strncpy(method,hdr->method,5);
  method[5]='\0';

  switch ( mode=hdr->extend_type )
  {
  	case EXTEND_UNIX:
  	  mode=hdr->unix_mode;
      printf ("%c%c%c%c%c%c%c%c%c%4d/%-4d",
	      ((mode & UNIX_OWNER_READ_PERM)  ? 'r' : '-'),
	      ((mode & UNIX_OWNER_WRITE_PERM) ? 'w' : '-'),
	      ((mode & UNIX_OWNER_EXEC_PERM)  ? 'x' : '-'),
	      ((mode & UNIX_GROUP_READ_PERM)  ? 'r' : '-'),
	      ((mode & UNIX_GROUP_WRITE_PERM) ? 'w' : '-'),
	      ((mode & UNIX_GROUP_EXEC_PERM)  ? 'x' : '-'),
	      ((mode & UNIX_OTHER_READ_PERM)  ? 'r' : '-'),
	      ((mode & UNIX_OTHER_WRITE_PERM) ? 'w' : '-'),
	      ((mode & UNIX_OTHER_EXEC_PERM)  ? 'x' : '-'),
	      hdr->unix_uid, hdr->unix_gid);
	  break;
	case EXTEND_OS68K:
/**/	case EXTEND_XOSK: /**/
  	  mode=hdr->unix_mode;
	  printf ("%c%c%c%c%c%c%c%c %4d/%-4d",
	      ((mode & OSK_DIRECTORY_PERM)	?	'd' : '-'),
	      ((mode & OSK_SHARED_PERM) 	? 	's' : '-'),
	      ((mode & OSK_OTHER_EXEC_PERM)	? 	'e' : '-'),
	      ((mode & OSK_OTHER_WRITE_PERM)? 	'w' : '-'),
	      ((mode & OSK_OTHER_READ_PERM)	? 	'r' : '-'),
	      ((mode & OSK_OWNER_EXEC_PERM)	? 	'e' : '-'),
	      ((mode & OSK_OWNER_WRITE_PERM)? 	'w' : '-'),
	      ((mode & OSK_OWNER_READ_PERM)	? 	'r' : '-'),
	      hdr->unix_uid, hdr->unix_gid);
	  break;
    default:
      switch (hdr->extend_type)
		{			/* max 18 characters */
		case EXTEND_GENERIC:p = "[generic]"; break;
		case EXTEND_CPM:	p = "[CP/M]"; break;
		case EXTEND_FLEX:	p = "[FLEX]"; break;
		case EXTEND_OS9:	p = "[OS-9]"; break;
		case EXTEND_OS68K:	p = "[OS-9/68K]"; break;
		case EXTEND_MSDOS:	p = "[MS-DOS]"; break;
		case EXTEND_MACOS:	p = "[Mac OS]"; break;
		case EXTEND_OS2:	p = "[OS/2]"; break;
		case EXTEND_HUMAN:	p = "[Human68K]"; break;
		case EXTEND_OS386:	p = "[OS-386]"; break;
		case EXTEND_RUNSER:	p = "[Runser]"; break;
#ifdef EXTEND_TOWNSOS
	  	/* This ID isn't fixed */
		case EXTEND_TOWNSOS:	p = "[TownsOS]"; break;
#endif
	  	/* Ouch!  Please customize it's ID.  */
		default: 		p = "[unknown]"; break;
		}
      printf ("%-18.18s", p);
      break;
    }
  
  print_size (hdr->packed_size, hdr->original_size);

  if (verbose_listing)
    if (hdr->has_crc)
      printf (" %s %04x", method,hdr->crc);
    else
      printf (" %s ****",method);
  
  printf (" ");
  print_stamp (hdr->unix_last_modified_stamp);

  if (!verbose)
    printf (" %s", hdr->name);

  printf ("\n");
}

static void
list_tailer ()
{
  struct stat stbuf;

  print_bar ();

  printf (" Total %4d file%c ",
	  list_files, (list_files == 1) ? ' ' : 's');
  print_size (packed_size_total, original_size_total);
  printf (" ");

  if (verbose_listing)
    printf ("           ");

  if (stat (archive_name, &stbuf) < 0)
    print_stamp ((time_t)0);
  else
    print_stamp (stbuf.st_mtime);

  printf ("\n");
}

/*----------------------------------------------------------------------*/
/*		LIST COMMAND MAIN					*/
/*----------------------------------------------------------------------*/

void
cmd_list ()
{
  FILE *afp;
  LzHeader hdr;
  int i;

  /* initialize total count */
  packed_size_total = 0L;
  original_size_total = 0L;
  list_files = 0;

  /* open archive file */
  if ((afp = open_old_archive ()) == NULL)
    fatal_error (archive_name);
  if (archive_is_msdos_sfx1 (archive_name))
    skip_msdos_sfx1_code (afp);

  /* print header message */
  if (!quiet)
    list_header ();

  /* print each file information */
  while (get_header (afp, &hdr))
    {
      if (need_file (hdr.name))
	{
	  list_one (&hdr);
	  list_files ++;
	  packed_size_total += hdr.packed_size;
	  original_size_total += hdr.original_size;
	}

      if (afp != stdin)
	  fseek (afp, hdr.packed_size, SEEK_CUR);
      else
	{
	  i = hdr.packed_size;
	  while(i--) fgetc(afp);
	}
    }

  /* close archive file */
  fclose (afp);

  /* print tailer message */
  if (!quiet)
    list_tailer ();

  return;
}