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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999-2001, 2005-2007, 2010-2012 Free Software
Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library. If not, see
<http://www.gnu.org/licenses/>. */
#include "mu_scm.h"
static scm_t_bits body_tag;
struct mu_body
{
mu_body_t body; /* Message body */
mu_stream_t stream; /* Associated stream */
char *buffer; /* I/O buffer */
size_t bufsize; /* Size of allocated buffer */
SCM msg; /* Message the body belongs to */
};
/* Initial buffer size */
#define BUF_SIZE 64
/* SMOB functions: */
static SCM
mu_scm_body_mark (SCM body_smob)
{
struct mu_body *mbp = (struct mu_body *) SCM_CDR (body_smob);
return mbp->msg;
}
static scm_sizet
mu_scm_body_free (SCM body_smob)
{
struct mu_body *mbp = (struct mu_body *) SCM_CDR (body_smob);
if (mbp->buffer)
free (mbp->buffer);
mu_stream_unref (mbp->stream);
free (mbp);
return 0;
}
static int
mu_scm_body_print (SCM body_smob, SCM port, scm_print_state * pstate)
{
struct mu_body *mbp = (struct mu_body *) SCM_CDR (body_smob);
size_t b_size = 0, b_lines = 0;
char buffer[512];
mu_body_size (mbp->body, &b_size);
mu_body_lines (mbp->body, &b_lines);
scm_puts ("#<body ", port);
snprintf (buffer, sizeof (buffer), "%3lu %-5lu",
(unsigned long) b_lines, (unsigned long) b_size);
scm_puts (buffer, port);
scm_puts (">", port);
return 1;
}
/* Internal functions: */
int
mu_scm_is_body (SCM scm)
{
return SCM_NIMP (scm) && (long) SCM_CAR (scm) == body_tag;
}
SCM
mu_scm_body_create (SCM msg, mu_body_t body)
{
struct mu_body *mbp;
mbp = scm_gc_malloc (sizeof (struct mu_body), "body");
mbp->msg = msg;
mbp->body = body;
mbp->stream = NULL;
mbp->buffer = NULL;
mbp->bufsize = 0;
SCM_RETURN_NEWSMOB (body_tag, mbp);
}
/* ************************************************************************* */
/* Guile primitives */
SCM_DEFINE_PUBLIC (scm_mu_body_p, "mu-body?", 1, 0, 0,
(SCM scm),
"Return @code{true} if @var{scm} is a Mailutils message body object.\n")
#define FUNC_NAME s_scm_mu_body_p
{
return scm_from_bool (mu_scm_is_body (scm));
}
#undef FUNC_NAME
SCM_DEFINE_PUBLIC (scm_mu_body_read_line, "mu-body-read-line", 1, 0, 0,
(SCM body),
"Read next line from the @var{body}.")
#define FUNC_NAME s_scm_mu_body_read_line
{
struct mu_body *mbp;
size_t nread;
int status;
SCM_ASSERT (mu_scm_is_body (body), body, SCM_ARG1, FUNC_NAME);
mbp = (struct mu_body *) SCM_CDR (body);
if (!mbp->stream)
{
status = mu_body_get_streamref (mbp->body, &mbp->stream);
if (status)
mu_scm_error (FUNC_NAME, status,
"Cannot get body stream",
SCM_BOOL_F);
}
if (!mbp->buffer)
{
mbp->bufsize = BUF_SIZE;
mbp->buffer = malloc (mbp->bufsize);
if (!mbp->buffer)
mu_scm_error (FUNC_NAME, ENOMEM, "Cannot allocate memory", SCM_BOOL_F);
}
status = mu_stream_getline (mbp->stream, (char**)&mbp->buffer, &mbp->bufsize,
&nread);
if (status)
mu_scm_error (FUNC_NAME, status,
"Error reading from stream", SCM_BOOL_F);
if (nread == 0)
return SCM_EOF_VAL;
return scm_from_locale_string (mbp->buffer);
}
#undef FUNC_NAME
SCM_DEFINE_PUBLIC (scm_mu_body_write, "mu-body-write", 2, 0, 0,
(SCM body, SCM text),
"Append @var{text} to message @var{body}.")
#define FUNC_NAME s_scm_mu_body_write
{
char *ptr;
size_t len;
struct mu_body *mbp;
int status;
SCM_ASSERT (mu_scm_is_body (body), body, SCM_ARG1, FUNC_NAME);
mbp = (struct mu_body *) SCM_CDR (body);
SCM_ASSERT (scm_is_string (text), text, SCM_ARG2, FUNC_NAME);
if (!mbp->stream)
{
status = mu_body_get_streamref (mbp->body, &mbp->stream);
if (status)
mu_scm_error (FUNC_NAME, status,
"Cannot get body stream", SCM_BOOL_F);
}
ptr = scm_to_locale_string (text);
len = strlen (ptr);
status = mu_stream_write (mbp->stream, ptr, len, NULL);
free (ptr);
if (status)
mu_scm_error (FUNC_NAME, status,
"Error writing to stream", SCM_BOOL_F);
return SCM_BOOL_T;
}
#undef FUNC_NAME
/* Initialize the module */
void
mu_scm_body_init ()
{
body_tag = scm_make_smob_type ("body", sizeof (struct mu_body));
scm_set_smob_mark (body_tag, mu_scm_body_mark);
scm_set_smob_free (body_tag, mu_scm_body_free);
scm_set_smob_print (body_tag, mu_scm_body_print);
#include "mu_body.x"
}
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