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/*
Log and info output ports for Guile.
This file is part of GNU Anubis.
Copyright (C) 2003-2020 The Anubis Team.
GNU Anubis 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 3 of the License, or (at your
option) any later version.
GNU Anubis 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 GNU Anubis. If not, see <http://www.gnu.org/licenses/>.
*/
#include "headers.h"
#include "extern.h"
#include "rcfile.h"
#ifdef WITH_GUILE
static scm_t_port_type *scm_anubis_log_port_type;
#define GET_LOG_PORT(x) ((struct anubis_log_port *) SCM_STREAM (x))
enum { PORT_LOG_INFO, PORT_LOG_ERROR };
struct anubis_log_port {
int type;
int flag; /* For error ports: -1 if error, >=0 if warning;
For info ports: verbosity level */
};
static size_t
log_port_write (SCM port, SCM src, size_t start, size_t count)
{
struct anubis_log_port *lp = GET_LOG_PORT (port);
signed char *str = SCM_BYTEVECTOR_CONTENTS (src) + start;
int n = count;
if (str[n-1] == '\n')
n--;
switch (lp->type)
{
case PORT_LOG_INFO:
info (lp->flag, "%*.*s", n, n, str);
break;
case PORT_LOG_ERROR:
if (lp->flag == -1)
anubis_error (0, 0, "%*.*s", n, n, str);
else
anubis_warning (0, "%*.*s", n, n, str);
break;
}
return count;
}
static int
log_port_print (SCM exp, SCM port, scm_print_state *pstate)
{
scm_puts ("#<Anubis log port>", port);
return 1;
}
void
guile_init_anubis_log_port (void)
{
scm_anubis_log_port_type = scm_make_port_type ("anubis-log",
NULL, log_port_write);
scm_set_port_print (scm_anubis_log_port_type, log_port_print);
scm_set_port_needs_close_on_gc (scm_anubis_log_port_type, 1);
}
static SCM
_make_anubis_log_port (int type, int flag)
{
struct anubis_log_port *lp;
lp = scm_gc_typed_calloc (struct anubis_log_port);
lp->type = type;
lp->flag = flag;
return scm_c_make_port (scm_anubis_log_port_type,
SCM_WRTNG | SCM_BUFLINE, (scm_t_bits) lp);
}
SCM
guile_make_anubis_error_port (int err)
{
return _make_anubis_log_port (PORT_LOG_ERROR, err);
}
SCM
guile_make_anubis_info_port (void)
{
return _make_anubis_log_port (PORT_LOG_INFO, NORMAL);
}
#endif
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