# HG changeset patch
# User wycc
# Date 1229519887 -28800
# Node ID 25bc0e753b883633d76a900788f218ec025b1765
# Parent  a6e559fb76d78b34f1f0e20ca79f4d164dc6446c
Add dynamic loading function

diff -r a6e559fb76d7 -r 25bc0e753b88 src/sprite.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/sprite.c	Wed Dec 17 21:18:07 2008 +0800
@@ -0,0 +1,71 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <cairo.h>
+#include <dlfcn.h>
+#include <sys/stat.h>
+#include "mb_types.h"
+#include "mb_shapes.h"
+#include "mb_tools.h"
+#include "mb_redraw_man.h"
+#include "mb_observer.h"
+#include "mb_prop.h"
+
+static char *Sprite_Search_Path=NULL;
+static int sprite_search_so(char *path, int len, const char *name)
+{
+	struct stat st;
+
+	if (Sprite_Search_Path == NULL) {
+		Sprite_Search_Path = strdup("/usr/share/madbutterffly");
+	}
+
+	snprintf(path, len, "./%s.so", name);
+	if (stat(path, &st)==0) {
+		return 0;
+	}
+	snprintf(path, len, "%s/%s.so", Sprite_Search_Path, name);
+	if (stat(path, &st)==0) {
+		return 0;
+	} else {
+		return -1;
+	}
+}
+
+void sprite_set_search_path(char *path)
+{
+	if (Sprite_Search_Path)
+		free(Sprite_Search_Path);
+	Sprite_Search_Path = strdup(path);
+}
+
+mb_sprite_t *sprite_load(const char *name, redraw_man_t *rdman, coord_t *root)
+{
+	char path[1024];
+	const char *s;
+	void *handle;
+	mb_sprite_t *(*new)(redraw_man_t *, coord_t *);
+	mb_sprite_t *obj;
+
+	if (sprite_search_so(path, sizeof(path),name)) {
+		fprintf(stderr," can not find %s in search path\n", name);
+		return NULL;
+	}
+	handle = dlopen(path,RTLD_LAZY);
+	if (handle == NULL) {
+		fprintf(stderr, "can not load object %s\n", path);
+		return NULL;
+	}
+	s = name + strlen(name)-1;
+	while((s != name) && *s != '/') s--;
+	snprintf(path,sizeof(path), "%s_new", s);
+	new = dlsym(handle,path);
+	if (new == NULL) {
+		fprintf(stderr," Can not find symbol %s at module\n", path);
+		return NULL;
+	}
+	obj = new(rdman, root);
+	return obj;
+}
+
+/* vim: set ts=4 */