ident.c
1.61 KB
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#include <stdlib.h>
#include <mailutils/types.h>
#include <mailutils/assoc.h>
#include <mailutils/locus.h>
#include <mailutils/error.h>
#include <mailutils/errno.h>
#include <mailutils/diag.h>
#include <mailutils/list.h>
struct mu_ident_ref
{
size_t count;
};
static mu_assoc_t nametab;
int
mu_ident_ref (char const *name, char const **refname)
{
int rc;
struct mu_ident_ref *ref, **refptr;
if (!name)
return EINVAL;
if (!refname)
return MU_ERR_OUT_PTR_NULL;
if (!nametab)
{
rc = mu_assoc_create (&nametab, 0);
if (rc)
{
mu_diag_funcall (MU_DIAG_ERROR, "mu_assoc_create", NULL, rc);
return rc;
}
mu_assoc_set_destroy_item (nametab, mu_list_free_item);
}
rc = mu_assoc_install_ref2 (nametab, name, &refptr, refname);
switch (rc)
{
case 0:
ref = malloc (sizeof *ref);
if (!ref)
{
rc = errno;
mu_assoc_remove (nametab, name);
return rc;
}
ref->count = 0;
break;
case MU_ERR_EXISTS:
ref = *refptr;
break;
default:
mu_diag_funcall (MU_DIAG_ERROR, "mu_assoc_install_ref2", name, rc);
return rc;
}
ref->count++;
return 0;
}
int
mu_ident_deref (char const *name)
{
struct mu_ident_ref *ref;
int rc;
if (!name)
return EINVAL;
if (!nametab)
return 0;
rc = mu_assoc_lookup (nametab, name, &ref);
switch (rc)
{
case 0:
if (--ref->count == 0)
mu_assoc_remove (nametab, name);
break;
case MU_ERR_NOENT:
break;
default:
mu_diag_funcall (MU_DIAG_ERROR, "mu_assoc_lookup", name, rc);
return rc;
}
return 0;
}