string.c
2.56 KB
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999-2002, 2005-2008, 2010-2012, 2014-2017 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 <stdlib.h>
#include <sieve-priv.h>
size_t
mu_i_sv_string_create (mu_sieve_machine_t mach, char *str)
{
size_t n;
mu_sieve_string_t *s;
if (mach->stringcount == mach->stringmax)
{
mu_i_sv_2nrealloc (mach, (void**) &mach->stringspace,
&mach->stringmax,
sizeof mach->stringspace[0]);
}
n = mach->stringcount++;
s = &mach->stringspace[n];
memset (s, 0, sizeof *s);
s->orig = str;
return n;
}
mu_sieve_string_t *
mu_sieve_string_raw (mu_sieve_machine_t mach, mu_sieve_slice_t slice,
size_t i)
{
if (i >= slice->count)
abort ();
return mach->stringspace + slice->first + i;
}
char *
mu_sieve_string_get (mu_sieve_machine_t mach, mu_sieve_string_t *string)
{
char *exp;
int rc;
if (string->constant)
return string->orig;
rc = mu_i_sv_string_expand (string->orig, mu_i_sv_expand_variables, mach,
&exp);
switch (rc)
{
case 0:
if (string->exp == NULL)
{
string->changed = strcmp (string->orig, exp) != 0;
string->exp = mu_sieve_strdup (mach, exp);
free (exp);
}
else if (strcmp (exp, string->exp) == 0)
{
string->changed = 0;
free (exp);
}
else
{
string->changed = 1;
mu_sieve_free (mach, string->exp);
string->exp = mu_sieve_strdup (mach, exp);
free (exp);
}
break;
case MU_ERR_CANCELED:
string->changed = 0;
return string->orig;
default:
mu_sieve_error (mach, "error expanding variables: %s",
mu_strerror (rc));
mu_sieve_abort (mach);
}
return string->exp;
}
char *
mu_sieve_string (mu_sieve_machine_t mach, mu_sieve_slice_t slice,
size_t i)
{
return mu_sieve_string_get (mach, mu_sieve_string_raw (mach, slice, i));
}