#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
#include <glib-object.h>
#include <ltdl.h>
#include "module.h"
+#include "avl.h"
static unsigned initialized;
+static struct avl_table *package_tree;
+
+static char *str_cpy_lower(char *dst, const char *src)
+{
+ size_t i;
+
+ for (i = 0; src[i]; i++)
+ dst[i] = tolower(src[i]);
+ dst[i] = 0;
+
+ return dst;
+}
+
+G_DEFINE_TYPE(UPkgModule, upkg_module, G_TYPE_TYPE_MODULE);
static void dl_print_errors(const char *prefix)
{
const char *err;
while (err = lt_dlerror()) {
if (prefix) fprintf(stderr, "%s: ", prefix);
- puts(lt_dlerror());
+ puts(err);
+ }
+}
+
+static gboolean module_load(GTypeModule *m)
+{
+ UPkgModule *mod = UPKG_MODULE(m);
+ int (*init_func)(GTypeModule *);
+
+ mod->dl = lt_dlopenext(G_TYPE_MODULE(m)->name);
+ if (!mod->dl) {
+ dl_print_errors(__func__);
+ return FALSE;
+ }
+
+ init_func = lt_dlsym(mod->dl, "init");
+ if (!init_func || init_func(m) != 0) {
+ dl_print_errors(__func__);
+ lt_dlclose(mod->dl);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static void module_unload(GTypeModule *m)
+{
+ UPkgModule *mod = UPKG_MODULE(m);
+
+ if (lt_dlclose(mod->dl) != 0) {
+ dl_print_errors(__func__);
+ }
+}
+
+static void upkg_module_init(UPkgModule *mod)
+{
+}
+
+static void upkg_module_class_init(UPkgModuleClass *class)
+{
+ GTypeModuleClass *modclass = G_TYPE_MODULE_CLASS(class);
+
+ modclass->load = module_load;
+ modclass->unload = module_unload;
+}
+
+UPkgModule *upkg_module_new(const char *name)
+{
+ char *name2;
+
+ if (!name) {
+ return NULL;
+ }
+
+ name2 = malloc(strlen(name)+1);
+ if (!name2) {
+ return NULL;
}
+
+ UPkgModule *mod = g_object_new(UPKG_MODULE_TYPE, NULL);
+ if (!mod) {
+ free(name2);
+ return NULL;
+ }
+
+ G_TYPE_MODULE(mod)->name = str_cpy_lower(name2, name);
+ return mod;
+}
+
+static int modcmp(const void *a, const void *b, void *_data)
+{
+ GTypeModule *ma = G_TYPE_MODULE(a);
+ GTypeModule *mb = G_TYPE_MODULE(b);
+
+ return strcmp(ma->name, mb->name);
}
int module_init(void)
{
if (!initialized) {
+ package_tree = avl_create(modcmp, NULL, NULL);
+ if (!package_tree) {
+ fprintf(stderr, "%s: failed to create package tree.\n", __func__);
+ return -1;
+ }
+
if (lt_dlinit() != 0) {
+ avl_destroy(package_tree, NULL);
dl_print_errors(__func__);
return -1;
}
return -1;
}
}
+
+GType module_get_class(const char *package, const char *class)
+{
+ char buf[strlen(package) + strlen(class) + 1];
+ GTypeModule search = { .name = str_cpy_lower(buf, package) };
+
+ GTypeModule *mod = avl_find(package_tree, &search);
+ if (!mod) {
+ void **p;
+
+ mod = G_TYPE_MODULE(upkg_module_new(package));
+ if (!mod) {
+ return 0;
+ }
+
+ p = avl_probe(package_tree, mod);
+ if (!p) {
+ g_object_unref(mod);
+ return 0;
+ }
+ }
+
+ if (!g_type_module_use(mod))
+ return 0;
+
+ str_cpy_lower(buf+strlen(package), class);
+ buf[0] = toupper(buf[0]);
+ buf[strlen(package)] = toupper(buf[strlen(package)]);
+ return g_type_from_name(buf);
+}