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/*
 * Copyright (C) 1996-8 Michael R. Elkins <[email protected]>
 * 
 *     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 "mutt.h"
#include "mutt_menu.h"
#include "mutt_curses.h"
#include "sort.h"

#include <string.h>
#include <ctype.h>
#include <unistd.h>

static char *get_sort_str (char *buf, size_t buflen, int method)
{
  snprintf (buf, buflen, "%s%s%s",
	    (method & SORT_REVERSE) ? "reverse-" : "",
	    (method & SORT_LAST) ? "last-" : "",
	    mutt_getnamebyvalue (method & SORT_MASK, SortMethods));
  return buf;
}

/* %b = number of incoming folders with unread messages [option]
 * %d = number of deleted messages [option]
 * %f = full mailbox path
 * %F = number of flagged messages [option]
 * %h = hostname
 * %l = length of mailbox (in bytes) [option]
 * %m = total number of messages [option]
 * %M = number of messages shown (virutal message count when limiting) [option]
 * %n = number of new messages [option]
 * %p = number of postponed messages [option]
 * %P = percent of way through index
 * %r = readonly/wontwrite/changed flag
 * %s = current sorting method ($sort)
 * %S = current aux sorting method ($sort_aux)
 * %t = # of tagged messages [option]
 * %v = Mutt version 
 * %V = currently active limit pattern [option] */
static const char *
status_format_str (char *buf, size_t buflen, char op, const char *src,
		   const char *prefix, const char *ifstring,
		   const char *elsestring,
		   unsigned long data, format_flag flags)
{
  char fmt[SHORT_STRING], tmp[SHORT_STRING], *cp;
  int count, optional = (flags & M_FORMAT_OPTIONAL);
  MUTTMENU *menu = (MUTTMENU *) data;

  *buf = 0;
  switch (op)
  {
    case 'b':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (buf, buflen, fmt, mutt_buffy_check (0));
      }
      else if (!mutt_buffy_check (0))
	optional = 0;
      break;

    case 'd':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (buf, buflen, fmt, Context ? Context->deleted : 0);
      }
      else if (!Context || !Context->deleted)
	optional = 0;
      break;

    case 'h':
      snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
      snprintf (buf, buflen, fmt, Hostname);
      break;

    case 'f':
      snprintf (fmt, sizeof(fmt), "%%%ss", prefix);
      if (Context && Context->path)
      {
	strfcpy (tmp, Context->path, sizeof (tmp));
	mutt_pretty_mailbox (tmp);
      }
      else
	strfcpy (tmp, "(no mailbox)", sizeof (tmp));
      snprintf (buf, buflen, fmt, tmp);
      break;

    case 'F':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (buf, buflen, fmt, Context ? Context->flagged : 0);
      }
      else if (!Context || !Context->flagged)
	optional = 0;
      break;

    case 'l':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
	mutt_pretty_size (tmp, sizeof (tmp), Context ? Context->size : 0);
	snprintf (buf, buflen, fmt, tmp);
      }
      else if (!Context || !Context->size)
	optional = 0;
      break;

    case 'L':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
	mutt_pretty_size (tmp, sizeof (tmp), Context ? Context->vsize: 0);
	snprintf (buf, buflen, fmt, tmp);
      }
      else if (!Context || !Context->pattern)
	optional = 0;
      break;

    case 'm':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (buf, buflen, fmt, Context ? Context->msgcount : 0);
      }
      else if (!Context || !Context->msgcount)
	optional = 0;
      break;

    case 'M':
      if (!optional)
      {
	snprintf (fmt, sizeof(fmt), "%%%sd", prefix);
	snprintf (buf, buflen, fmt, Context ? Context->vcount : 0);
      }
      else if (!Context || !Context->pattern)
	optional = 0;
      break;

    case 'n':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (buf, buflen, fmt, Context ? Context->new : 0);
      }
      else if (!Context || !Context->new)
	optional = 0;
      break;

    case 'o':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (buf, buflen, fmt, Context ? Context->unread - Context->new : 0);
      }
      else if (!Context || !(Context->unread - Context->new))
	optional = 0;
      break;

    case 'p':
      count = mutt_num_postponed ();
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (buf, buflen, fmt, count);
      }
      else if (!count)
	optional = 0;
      break;

    case 'P':
      if (menu->top + menu->pagelen >= menu->max)
	cp = menu->top ? "end" : "all";
      else
      {
	count = (100 * (menu->top + menu->pagelen)) / menu->max;
	snprintf (tmp, sizeof (tmp), "%d%%", count);
	cp = tmp;
      }
      snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
      snprintf (buf, buflen, fmt, cp);
      break;

    case 'r':
      if (Context)
	buf[0] = (Context->readonly || Context->dontwrite) ? StChars[2] :
	  (Context->changed || Context->deleted) ? StChars[1] : StChars[0];
      else
	buf[0] = StChars[0];
      buf[1] = 0;
      break;

    case 's':
      snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
      snprintf (buf, buflen, fmt,
		get_sort_str (tmp, sizeof (tmp), Sort));
      break;

    case 'S':
      snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
      snprintf (buf, buflen, fmt,
		get_sort_str (tmp, sizeof (tmp), SortAux));
      break;

    case 't':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (buf, buflen, fmt, Context ? Context->tagged : 0);
      }
      else if (!Context || !Context->tagged)
	optional = 0;
      break;

    case 'u':
      if (!optional)
      {
	snprintf (fmt, sizeof (fmt), "%%%sd", prefix);
	snprintf (buf, buflen, fmt, Context ? Context->unread : 0);
      }
      else if (!Context || !Context->unread)
	optional = 0;
      break;

    case 'v':
      snprintf (fmt, sizeof (fmt), "Mutt %%s");
      snprintf (buf, buflen, fmt, VERSION);
      break;

    case 'V':
      if (!optional)
      {
	snprintf (fmt, sizeof(fmt), "%%%ss", prefix);
	snprintf (buf, buflen, fmt, Context ? Context->pattern : 0);
      }
      else if (!Context || !Context->pattern)
	optional = 0;
      break;

    case 0:
      *buf = 0;
      return (src);

    default:
      snprintf (buf, buflen, "%%%s%c", prefix, op);
      break;
  }

  if (optional)
    menu_status_line (buf, buflen, menu, ifstring);
  else if (flags & M_FORMAT_OPTIONAL)
    menu_status_line (buf, buflen, menu, elsestring);

  return (src);
}

void menu_status_line (char *buf, size_t buflen, MUTTMENU *menu, const char *p)
{
  mutt_FormatString (buf, buflen, p, status_format_str, (unsigned long) menu, 0);
}