enter.c

mutt-1.5.12 源代码。linux 下邮件接受的工具。

	case OP_EDITOR_FORWARD_WORD:
	  if (state->curpos == state->lastchar)
	    BEEP ();
	  else
	  {
	    while (state->curpos < state->lastchar && iswspace (state->wbuf[state->curpos]))
	      ++state->curpos;
	    while (state->curpos < state->lastchar && !iswspace (state->wbuf[state->curpos]))
	      ++state->curpos;
	  }
	  break;

	case OP_EDITOR_CAPITALIZE_WORD:
	case OP_EDITOR_UPCASE_WORD:
	case OP_EDITOR_DOWNCASE_WORD:
	  if (state->curpos == state->lastchar)
	  {
	    BEEP ();
	    break;
	  }
	  while (state->curpos && !iswspace (state->wbuf[state->curpos]))
	    --state->curpos;
	  while (state->curpos < state->lastchar && iswspace (state->wbuf[state->curpos]))
	    ++state->curpos;
	  while (state->curpos < state->lastchar && !iswspace (state->wbuf[state->curpos]))
	  {
	    if (ch == OP_EDITOR_DOWNCASE_WORD)
	      state->wbuf[state->curpos] = towlower (state->wbuf[state->curpos]);
	    else
	    {
	      state->wbuf[state->curpos] = towupper (state->wbuf[state->curpos]);
	      if (ch == OP_EDITOR_CAPITALIZE_WORD)
		ch = OP_EDITOR_DOWNCASE_WORD;
	    }
	    state->curpos++;
	  }
	  break;

	case OP_EDITOR_DELETE_CHAR:
	  if (state->curpos == state->lastchar)
	    BEEP ();
	  else
	  {
	    i = state->curpos;
	    while (i < state->lastchar && COMB_CHAR (state->wbuf[i]))
	      ++i;
	    if (i < state->lastchar)
	      ++i;
	    while (i < state->lastchar && COMB_CHAR (state->wbuf[i]))
	      ++i;
	    memmove (state->wbuf + state->curpos, state->wbuf + i, (state->lastchar - i) * sizeof (wchar_t));
	    state->lastchar -= i - state->curpos;
	  }
	  break;

	case OP_EDITOR_KILL_WORD:
	  /* delete to begining of word */
	  if (state->curpos != 0)
	  {
	    i = state->curpos;
	    while (i && iswspace (state->wbuf[i - 1]))
	      --i;
	    if (i)
	    {
	      if (iswalnum (state->wbuf[i - 1]))
	      {
		for (--i; i && iswalnum (state->wbuf[i - 1]); i--)
		  ;
	      }
	      else
		--i;
	    }
	    memmove (state->wbuf + i, state->wbuf + state->curpos,
		     (state->lastchar - state->curpos) * sizeof (wchar_t));
	    state->lastchar += i - state->curpos;
	    state->curpos = i;
	  }
	  break;

	case OP_EDITOR_KILL_EOW:
	  /* delete to end of word */
	  for (i = state->curpos;
	       i < state->lastchar && iswspace (state->wbuf[i]); i++)
	    ;
	  for (; i < state->lastchar && !iswspace (state->wbuf[i]); i++)
	    ;
	  memmove (state->wbuf + state->curpos, state->wbuf + i,
		   (state->lastchar - i) * sizeof (wchar_t));
	  state->lastchar += state->curpos - i;
	  break;

	case OP_EDITOR_BUFFY_CYCLE:
	  if (flags & M_EFILE)
	  {
	    first = 1; /* clear input if user types a real key later */
	    my_wcstombs (buf, buflen, state->wbuf, state->curpos);
	    mutt_buffy (buf, buflen);
	    state->curpos = state->lastchar = my_mbstowcs (&state->wbuf, &state->wbuflen, 0, buf);
	    break;
	  }
	  else if (!(flags & M_FILE))
	    goto self_insert;
	  /* fall through to completion routine (M_FILE) */

	case OP_EDITOR_COMPLETE:
	case OP_EDITOR_COMPLETE_QUERY:
	  state->tabs++;
	  if (flags & M_CMD)
	  {
	    for (i = state->curpos; i && state->wbuf[i-1] != ' '; i--)
	      ;
	    my_wcstombs (buf, buflen, state->wbuf + i, state->curpos - i);
	    if (tempbuf && templen == state->lastchar - i &&
		!memcmp (tempbuf, state->wbuf + i, (state->lastchar - i) * sizeof (wchar_t)))
	    {
	      mutt_select_file (buf, buflen, (flags & M_EFILE) ? M_SEL_FOLDER : 0);
	      set_option (OPTNEEDREDRAW);
	      if (*buf)
		replace_part (state, i, buf);
	      rv = 1; 
	      goto bye;
	    }
	    if (!mutt_complete (buf, buflen))
	    {
	      templen = state->lastchar - i;
	      safe_realloc (&tempbuf, templen * sizeof (wchar_t));
	    }
	    else
	      BEEP ();

	    replace_part (state, i, buf);
	  }
	  else if (flags & M_ALIAS && ch == OP_EDITOR_COMPLETE)
	  {
	    /* invoke the alias-menu to get more addresses */
	    for (i = state->curpos; i && state->wbuf[i-1] != ',' && 
		 state->wbuf[i-1] != ':'; i--)
	      ;
	    for (; i < state->lastchar && state->wbuf[i] == ' '; i++)
	      ;
	    my_wcstombs (buf, buflen, state->wbuf + i, state->curpos - i);
	    r = mutt_alias_complete (buf, buflen);
	    replace_part (state, i, buf);
	    if (!r)
	    {
	      rv = 1;
	      goto bye;
	    }
	    break;
	  }
	  else if (flags & M_ALIAS && ch == OP_EDITOR_COMPLETE_QUERY)
	  {
	    /* invoke the query-menu to get more addresses */
	    if ((i = state->curpos))
	    {
	      for (; i && state->wbuf[i - 1] != ','; i--)
		;
	      for (; i < state->curpos && state->wbuf[i] == ' '; i++)
		;
	    }

	    my_wcstombs (buf, buflen, state->wbuf + i, state->curpos - i);
	    mutt_query_complete (buf, buflen);
	    replace_part (state, i, buf);

	    rv = 1; 
	    goto bye;
	  }
	  else if (flags & M_COMMAND)
	  {
	    my_wcstombs (buf, buflen, state->wbuf, state->curpos);
	    i = strlen (buf);
	    if (i && buf[i - 1] == '=' &&
		mutt_var_value_complete (buf, buflen, i))
	      state->tabs = 0;
	    else if (!mutt_command_complete (buf, buflen, i, state->tabs))
	      BEEP ();
	    replace_part (state, 0, buf);
	  }
	  else if (flags & (M_FILE | M_EFILE))
	  {
	    my_wcstombs (buf, buflen, state->wbuf, state->curpos);

	    /* see if the path has changed from the last time */
	    if ((!tempbuf && !state->lastchar) || (tempbuf && templen == state->lastchar &&
		!memcmp (tempbuf, state->wbuf, state->lastchar * sizeof (wchar_t))))
	    {
	      _mutt_select_file (buf, buflen, 
				 ((flags & M_EFILE) ? M_SEL_FOLDER : 0) | (multiple ? M_SEL_MULTI : 0), 
				 files, numfiles);
	      set_option (OPTNEEDREDRAW);
	      if (*buf)
	      {
		mutt_pretty_mailbox (buf);
		if (!pass)
		  mutt_history_add (hclass, buf);
		rv = 0;
		goto bye;
	      }

	      /* file selection cancelled */
	      rv = 1;
	      goto bye;
	    }

	    if (!mutt_complete (buf, buflen))
	    {
	      templen = state->lastchar;
	      safe_realloc (&tempbuf, templen * sizeof (wchar_t));
	      memcpy (tempbuf, state->wbuf, templen * sizeof (wchar_t));
	    }
	    else
	      BEEP (); /* let the user know that nothing matched */
	    replace_part (state, 0, buf);
	  }
	  else
	    goto self_insert;
	  break;

	case OP_EDITOR_QUOTE_CHAR:
	  {
	    event_t event;
	    /*ADDCH (LastKey);*/
	    event = mutt_getch ();
	    if (event.ch != -1)
	    {
	      LastKey = event.ch;
	      goto self_insert;
	    }
	  }

	case OP_EDITOR_TRANSPOSE_CHARS:
	  if (state->lastchar < 2)
	    BEEP ();
	  else
	{
	    wchar_t t;

	    if (state->curpos == 0)
	      state->curpos = 2;
	    else if (state->curpos < state->lastchar)
	      ++state->curpos;

	    t = state->wbuf[state->curpos - 2];
	    state->wbuf[state->curpos - 2] = state->wbuf[state->curpos - 1];
	    state->wbuf[state->curpos - 1] = t;
	  }
	  break;

	default:
	  BEEP ();
      }
    }
    else
    {
      
self_insert:

      state->tabs = 0;
      /* use the raw keypress */
      ch = LastKey;

#ifdef KEY_ENTER
      /* treat ENTER the same as RETURN */
      if (ch == KEY_ENTER)
	ch = '\r';
#endif

      /* quietly ignore all other function keys */
      if (ch & ~0xff)
	continue;

      /* gather the octets into a wide character */
      {
	char c;
	size_t k;

	c = ch;
	k = mbrtowc (&wc, &c, 1, &mbstate);
	if (k == (size_t)(-2))
	  continue;
	else if (k && k != 1)
	{
	  memset (&mbstate, 0, sizeof (mbstate));
	  continue;
	}
      }

      if (first && (flags & M_CLEAR))
      {
	first = 0;
	if (IsWPrint (wc)) /* why? */
	  state->curpos = state->lastchar = 0;
      }

      if (wc == '\r' || wc == '\n')
      {
	/* Convert from wide characters */
	my_wcstombs (buf, buflen, state->wbuf, state->lastchar);
	if (!pass)
	  mutt_history_add (hclass, buf);

	if (multiple)
	{
	  char **tfiles;
	  *numfiles = 1;
	  tfiles = safe_calloc (*numfiles, sizeof (char *));
	  mutt_expand_path (buf, buflen);
	  tfiles[0] = safe_strdup (buf);
	  *files = tfiles;
	}
	rv = 0; 
	goto bye;
      }
      else if (wc && (wc < ' ' || IsWPrint (wc))) /* why? */
      {
	if (state->lastchar >= state->wbuflen)
	{
	  state->wbuflen = state->lastchar + 20;
	  safe_realloc (&state->wbuf, state->wbuflen * sizeof (wchar_t));
	}
	memmove (state->wbuf + state->curpos + 1, state->wbuf + state->curpos, (state->lastchar - state->curpos) * sizeof (wchar_t));
	state->wbuf[state->curpos++] = wc;
	state->lastchar++;
      }
      else
      {
	mutt_flushinp ();
	BEEP ();
      }
    }
  }
  
  bye:
  
  FREE (&tempbuf);
  return rv;
}

void mutt_free_enter_state (ENTER_STATE **esp)
{
  if (!esp) return;
  
  FREE (&(*esp)->wbuf);
  FREE (esp);		/* __FREE_CHECKED__ */
}

/*
 * TODO:
 * very narrow screen might crash it
 * sort out the input side
 * unprintable chars
 */