accessor.h
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2010 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/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <mailutils/types.h>
#include <mailutils/errno.h>
#include <mailutils/util.h>
#include <mailutils/cstr.h>
#include <mailutils/sys/url.h>
/* General accessors: */
#define AC2(a,b) a ## b
#define METHOD(pfx,part) AC2(pfx,part)
#define AC4(a,b,c,d) a ## b ## c ## d
#define ACCESSOR(action,field) AC4(mu_url_,action,_,field)
/* Define a `static get' accessor */
int
ACCESSOR(sget,URL_PART) (mu_url_t url, char const **sptr)
{
if (url == NULL)
return EINVAL;
if (!url->URL_PART)
{
if (url->METHOD(_get_,URL_PART))
{
size_t n;
char *buf;
int status = url->METHOD(_get_,URL_PART) (url, NULL, 0, &n);
if (status)
return status;
buf = malloc (n + 1);
if (!buf)
return ENOMEM;
status = url->METHOD(_get_,URL_PART) (url, buf, n + 1, NULL);
if (status)
return status;
if (buf[0])
{
/* FIXME */
status = mu_str_url_decode (&url->URL_PART, buf);
if (status)
{
free (buf);
return status;
}
}
else
url->URL_PART = buf;
if (!url->URL_PART)
return ENOMEM;
}
else
return MU_ERR_NOENT;
}
*sptr = url->URL_PART;
return 0;
}
/* Define a `get' accessor */
int
ACCESSOR(get,URL_PART) (mu_url_t url, char *buf, size_t len, size_t *n)
{
size_t i;
const char *str;
int status = ACCESSOR(sget, URL_PART) (url, &str);
if (status)
return status;
i = mu_cpystr (buf, str, len);
if (n)
*n = i;
return 0;
}
/* Define an `allocated get' accessor */
int
ACCESSOR(aget, URL_PART) (mu_url_t url, char **buf)
{
const char *str;
int status = ACCESSOR(sget, URL_PART) (url, &str);
if (status)
return status;
if (str)
{
*buf = strdup (str);
if (!*buf)
status = ENOMEM;
}
else
*buf = NULL;
return status;
}
/* Define a comparator */
int
ACCESSOR(is_same,URL_PART) (mu_url_t url1, mu_url_t url2)
{
const char *s1, *s2;
int status1, status2;
status1 = ACCESSOR(sget, URL_PART) (url1, &s1);
if (status1 && status1 != MU_ERR_NOENT)
return 0;
status2 = ACCESSOR(sget, URL_PART) (url2, &s2);
if (status2 && status2 != MU_ERR_NOENT)
return 0;
if (status1 || status2)
return status1 == status2; /* Both fields are missing */
return mu_c_strcasecmp (s1, s2) == 0;
}