msgscan.c
2.52 KB
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2009, 2010 Free Software Foundation, Inc.
GNU Mailutils 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, or (at your option)
any later version.
GNU Mailutils 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 Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <stdlib.h>
#include <mailutils/types.h>
#include <mailutils/stream.h>
#include <mailutils/message.h>
#include <mailutils/attribute.h>
#include <mailutils/cstr.h>
int
mu_stream_scan_message (mu_stream_t stream, struct mu_message_scan *sp)
{
char buf[1024];
mu_off_t off;
size_t n;
int status;
int in_header = 1;
size_t hlines = 0;
size_t blines = 0;
size_t body_start = 0;
int attr_flags = 0;
unsigned long uidvalidity = 0;
if (sp->flags & MU_SCAN_SEEK)
{
status = mu_stream_seek (stream, sp->message_start, MU_SEEK_SET, NULL);
if (status)
return status;
}
off = 0;
while (1)
{
size_t rdsize;
status = mu_stream_readline (stream, buf, sizeof (buf), &n);
if (status || n == 0)
break;
if (sp->flags & MU_SCAN_SIZE)
{
rdsize = sp->message_size - off;
if (n > rdsize)
n = rdsize;
}
if (in_header)
{
if (buf[0] == '\n')
{
in_header = 0;
body_start = off + 1;
}
if (buf[n - 1] == '\n')
hlines++;
/* Process particular attributes */
if (mu_c_strncasecmp (buf, "status:", 7) == 0)
mu_string_to_flags (buf, &attr_flags);
else if (mu_c_strncasecmp (buf, "x-imapbase:", 11) == 0)
{
char *p;
uidvalidity = strtoul (buf + 11, &p, 10);
/* second number is next uid. Ignored */
}
}
else
{
if (buf[n - 1] == '\n')
blines++;
}
off += n;
}
if (status == 0)
{
if (!body_start)
body_start = off;
sp->body_start = body_start;
sp->body_end = off;
sp->header_lines = hlines;
sp->body_lines = blines;
sp->attr_flags = attr_flags;
sp->uidvalidity = uidvalidity;
}
return status;
}