serval-dna/strbuf_helpers.c
Andrew Bettison c7488de510 Add strbuf_helpers.[ch]
Functions to help assemble strbuf contents.
2012-07-11 14:11:59 +09:30

64 lines
1.6 KiB
C

/*
Serval string buffer helper functions.
Copyright (C) 2012 The Serval Project
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "strbuf_helpers.h"
#include <poll.h>
strbuf strbuf_append_poll_events(strbuf sb, short events)
{
static struct { short flags; const char *name; } symbols[] = {
{ POLLIN, "IN" },
{ POLLPRI, "PRI" },
{ POLLOUT, "OUT" },
{ POLLERR, "ERR" },
{ POLLHUP, "HUP" },
{ POLLNVAL, "NVAL" },
{ POLLRDNORM, "RDNORM" },
{ POLLRDBAND, "RDBAND" },
#ifdef POLLWRNORM
{ POLLWRNORM, "WRNORM" },
#endif
#ifdef POLLWRBAND
{ POLLWRBAND, "WRBAND" },
#endif
#ifdef POLLMSG
{ POLLMSG, "MSG" },
#endif
#ifdef POLLREMOVE
{ POLLREMOVE, "REMOVE" },
#endif
#ifdef POLLRDHUP
{ POLLRDHUP, "RDHUP" },
#endif
{ 0, NULL }
}, *sp;
int n = 0;
for (sp = symbols; sp->name; ++sp) {
if (events & sp->flags) {
if (n)
strbuf_putc(sb, '|');
strbuf_puts(sb, sp->name);
++n;
}
}
if (!n)
strbuf_putc(sb, '0');
return sb;
}