top.c
1.55 KB
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
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, 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 "mail.h"
/*
* to[p] [msglist]
*/
int
mail_top (int argc, char **argv)
{
if (argc > 1)
return util_msglist_command (mail_top, argc, argv, 1);
else
{
message_t msg;
stream_t stream;
char buf[512];
size_t n;
off_t off;
int lines = strtol ((util_find_env("toplines"))->value, NULL, 10);
if (lines < 0)
return 1;
if (mailbox_get_message (mbox, cursor, &msg) != 0)
return 1;
if (util_isdeleted (cursor))
return 1;
message_get_stream (msg, &stream);
for (n = 0, off = 0; lines > 0; lines--, off += n)
{
int status = stream_readline (stream, buf, sizeof (buf), off, &n);
if (status != 0 || n == 0)
break;
fprintf (ofile, "%s", buf);
}
return 0;
}
return 1;
}