int is_dir_empty(const char path[]) { DIR *dir; struct dirent *d; if((dir = os_opendir(path)) == NULL) { return 0; } while((d = os_readdir(dir)) != NULL) { if(!is_builtin_dir(d->d_name)) { break; } } os_closedir(dir); return d == NULL; }
/* Traverses passed directory recursively and adds it and all found * subdirectories to PATH environment variable. */ static void add_dirs_to_path(const char *path) { DIR *dir; struct dirent *dentry; const char *slash = ""; dir = os_opendir(path); if(dir == NULL) return; slash = ends_with_slash(path) ? "" : "/"; add_to_path(path); while((dentry = os_readdir(dir)) != NULL) { char buf[PATH_MAX]; if(is_builtin_dir(dentry->d_name)) { continue; } snprintf(buf, sizeof(buf), "%s%s%s", path, slash, dentry->d_name); #ifndef _WIN32 if(dentry->d_type == DT_DIR) #else if(is_dir(buf)) #endif { add_dirs_to_path(buf); } } os_closedir(dir); }
/* A generic subtree traversing. Returns zero on success, otherwise non-zero is * returned. */ static int traverse_subtree(const char path[], subtree_visitor visitor, void *param) { DIR *dir; struct dirent *d; int result; VisitResult enter_result; dir = os_opendir(path); if(dir == NULL) { return 1; } enter_result = visitor(path, VA_DIR_ENTER, param); if(enter_result == VR_ERROR) { (void)os_closedir(dir); return 1; } result = 0; while((d = os_readdir(dir)) != NULL) { char *full_path; if(is_builtin_dir(d->d_name)) { continue; } full_path = join_paths(path, d->d_name); if(entry_is_link(full_path, d)) { /* Treat symbolic links to directories as files as well. */ result = visitor(full_path, VA_FILE, param); } else if(entry_is_dir(full_path, d)) { result = traverse_subtree(full_path, visitor, param); } else { result = visitor(full_path, VA_FILE, param); } free(full_path); if(result != 0) { break; } } (void)os_closedir(dir); if(result == 0 && enter_result != VR_SKIP_DIR_LEAVE && enter_result != VR_CANCELLED) { result = visitor(path, VA_DIR_LEAVE, param); } return result; }