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(scm_c_register_extension): Allow NULL as library

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name.
(load_extension): Ignore NULL library names when comparing.
This commit is contained in:
Marius Vollmer 2001-06-04 22:16:27 +00:00
parent 0e9eeb6cc9
commit bef38a17c4
1 changed files with 14 additions and 2 deletions
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14
libguile/extensions.c
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@ -59,13 +59,25 @@ typedef struct extension_t
static extension_t *registered_extensions;
/* Register a LIB/INIT pair for use by `scm_load_extension'. LIB is
allowed to be NULL and then only INIT is used to identify the
registered entry. This is useful when you don't know the library
name (which isn't really relevant anyway in a completely linked
program) and you are sure that INIT is unique (which it must be for
static linking). Hmm, given this reasoning, what use is LIB
anyway?
*/
void
scm_c_register_extension (const char *lib, const char *init,
void (*func) (void *), void *data)
{
extension_t *ext = scm_must_malloc (sizeof(extension_t),
"scm_register_extension");
if (lib)
ext->lib = scm_must_strdup (lib);
else
ext->lib = NULL;
ext->init = scm_must_strdup (init);
ext->func = func;
ext->data = data;
@ -82,7 +94,7 @@ load_extension (SCM lib, SCM init)
extension_t *ext;
for (ext = registered_extensions; ext; ext = ext->next)
if (!strcmp (ext->lib, SCM_STRING_CHARS (lib))
if ((ext->lib == NULL || !strcmp (ext->lib, SCM_STRING_CHARS (lib)))
&& !strcmp (ext->init, SCM_STRING_CHARS (init)))
{
ext->func (ext->data);