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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2020-2025 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/>. */
/*
* Functions for dealing with message part coordinates.
*/
#include <config.h>
#include <stdlib.h>
#include <errno.h>
#include <mailutils/message.h>
int
mu_coord_alloc (mu_coord_t *ptr, size_t n)
{
mu_coord_t p = calloc (n + 1, sizeof (p[0]));
if (!p)
return errno;
p[0] = n;
*ptr = p;
return 0;
}
int
mu_coord_realloc (mu_coord_t *ptr, size_t n)
{
if (!ptr)
return EINVAL;
if (!*ptr)
return mu_coord_alloc (ptr, n);
else
{
size_t i = mu_coord_length (*ptr);
if (i != n)
{
mu_coord_t nc = realloc (*ptr, (n + 1) * sizeof (nc[0]));
if (nc == NULL)
return ENOMEM;
while (++i <= n)
nc[i] = 0;
nc[0] = n;
*ptr = nc;
}
}
return 0;
}
int
mu_coord_dup (mu_coord_t orig, mu_coord_t *copy)
{
size_t i, n = mu_coord_length (orig);
int rc = mu_coord_alloc (copy, n);
if (rc)
return rc;
for (i = 1; i <= n; i++)
(*copy)[i] = orig[i];
return 0;
}
static void
revstr (char *s, char *e)
{
while (s < e)
{
char t = *s;
*s++ = *--e;
*e = t;
}
}
char *
mu_coord_part_string (mu_coord_t c, size_t dim)
{
size_t len = 0;
size_t i;
char *result, *p;
for (i = 1; i <= dim; i++)
{
size_t n = c[i];
do
len++;
while (n /= 10);
len++;
}
result = malloc (len);
if (!result)
return NULL;
p = result;
for (i = 1; i <= dim; i++)
{
char *s;
size_t n = c[i];
if (i > 1)
*p++ = '.';
s = p;
do
{
unsigned x = n % 10;
*p++ = x + '0';
}
while (n /= 10);
revstr(s, p);
}
*p = 0;
return result;
}
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