+/* Return string "prefix" + "id"; malloc()'s string, remember to call free()! */
+static char * string_prefixed_id(struct World * world, char * prefix, char id);
+
+
+
+/* Create Winconf, init ->view/height_type/width_type to 0, ->id to "id". */
+static void create_winconf(struct World * world, char id, struct WinConf * wcp);
+
+/* Initialize Winconf of "id" from appropriate config file.*/
+static void init_winconf_from_file(struct World * world, char id);
+
+/* Wrapper around init_win() called with values from Winconf of "id". */
+static void init_win_from_winconf(struct World * world, char id);
+
+/* Save title, draw function, size of window identified by "id" to conffile. */
+static void save_win_config(struct World * world, char id);
+
+/* Free data pointed to inside WinConf struct. */
+static void free_winconf_data(struct World * world, char id);
+
+
+
+/* Write geometry of a window to its WinConf, as positive or negative values
+ * (dependent on state ofWinConf->height_type / WinConf->width_type).
+ */
+static void set_winconf_geometry(struct World * world, char id);
+
+
+
+/* Get WinConf by "id"; get id of WinConf mothering "win". */
+static struct WinConf * get_winconf_by_id(struct World * world, char id);
+
+/* Get (Win->draw) function identified by "c"; NULL if c not mapped to one. */
+static void * get_drawfunc_by_char(char c);
+
+/* Iterate over bytes of world->winconf_ids array. Re-start after null byte. */
+static char get_next_winconf_id(struct World * world);
+
+
+
+static char * string_prefixed_id(struct World * world, char * prefix, char id)
+{
+ uint8_t size = strlen(prefix) + 2;
+ char * path = try_malloc(size, world, "string_prefixed_id()");
+ sprintf(path, "%s_", prefix);
+ path[size - 2] = id;
+ return path;
+}
+
+
+
+static void create_winconf(struct World * world, char id, struct WinConf * wcp)
+{
+ wcp->id = id;
+ wcp->view = 0;
+ wcp->height_type = 0;
+ wcp->width_type = 0;
+ wcp->kb.edit = 0;
+ wcp->kb.select = 0;
+}
+
+
+
+static void init_winconf_from_file(struct World * world, char id)
+{
+ char * tmp = "init_winconf_from_file() on window id '_'";
+ char * context = try_malloc(strlen(tmp) + 1, world,
+ "init_winconf_from_file()");
+ memcpy(context, tmp, strlen(tmp) + 1);
+ context[strlen(tmp) - 2] = id;
+
+ char * path = string_prefixed_id(world, "config/windows/Win_", id);
+ FILE * file = try_fopen(path, "r", world, context);
+ free(path);
+ uint16_t linemax = get_linemax(file, world, context);
+ char line[linemax + 1];
+
+ struct WinConf * winconf = get_winconf_by_id(world, id);
+ try_fgets(line, linemax + 1, file, world, context);
+ winconf->title = try_malloc(strlen(line), world, context);
+ memcpy(winconf->title, line, strlen(line) - 1); /* Eliminate newline char */
+ winconf->title[strlen(line) - 1] = '\0'; /* char at end of string. */
+
+ try_fgets(line, linemax + 1, file, world, context);
+ winconf->draw = line[0];
+
+ try_fgets(line, linemax + 1, file, world, context);
+ winconf->height = atoi(line);
+ if (0 >= winconf->height)
+ {
+ winconf->height_type = 1;
+ }
+ try_fgets(line, linemax + 1, file, world, context);
+ winconf->width = atoi(line);
+ if (0 >= winconf->width)
+ {
+ winconf->width_type = 1;
+ }
+
+ char command[linemax + 1];
+ char * cmdptr;
+ struct KeyBinding ** loc_last_ptr = &winconf->kb.kbs;
+ * loc_last_ptr = 0;
+ while (fgets(command, linemax + 1, file))
+ {
+ if ('\n' == command[0] || 0 == command[0])
+ {
+ break;
+ }
+ * loc_last_ptr = try_malloc(sizeof(struct KeyBinding), world, context);
+ struct KeyBinding * kb_p = * loc_last_ptr;
+ kb_p->next = 0;
+ kb_p->key = atoi(command);
+ cmdptr = strchr(command, ' ') + 1;
+ kb_p->name = try_malloc(strlen(cmdptr), world, context);
+ memcpy(kb_p->name, cmdptr, strlen(cmdptr) - 1);
+ kb_p->name[strlen(cmdptr) - 1] = '\0';
+ loc_last_ptr = & kb_p->next;
+ }
+
+ try_fclose(file, world, context);
+ free(context);
+}
+
+
+
+static void init_win_from_winconf(struct World * world, char id)
+{
+ char * tmp = "Trouble in init_win_from_file() with init_win() (win id: _).";
+ char * err = try_malloc(strlen(tmp) + 1, world, "init_win_from_file()");
+ memcpy(err, tmp, strlen(tmp) + 1);
+ err[strlen(tmp) - 3] = id;
+ struct WinConf * winconf = get_winconf_by_id(world, id);
+ void * f = get_drawfunc_by_char(winconf->draw);
+ exit_err(NULL == f, world, err);
+ exit_err(init_win(world->wmeta, &winconf->win, winconf->title,
+ winconf->height, winconf->width, world, f),
+ world, err);
+ free(err);
+}
+
+
+
+static void save_win_config(struct World * world, char id)