+/* Assign a linkdatas trg_set */\r
+void ir_linkdata_assign_set\r
+( union ir_setdata_t* link, struct ir_set_t* set )\r
+{ assert_link(link);\r
+ link->link.trg_set = set;\r
+}\r
+\r
+/* Assign a linkdatas type */\r
+void ir_linkdata_assign_type\r
+( union ir_setdata_t* link, enum ltype type )\r
+{ assert_link(link);\r
+ link->link.type = type;\r
+}\r
+\r
+/* Get, or generate, the fully qualified name of the link's target set */\r
+uint8_t*\r
+ir_linkdata_dlink_name\r
+( union ir_setdata_t* link )\r
+{ struct ir_namelist_t* namelist_iter;\r
+ struct ir_setld_t* setld;\r
+ struct ir_classld_t* classld;\r
+ uint8_t* bytep;\r
+ size_t bytes;\r
+ char setpass;\r
+ uint8_t delimiter;\r
+ static const uint8_t dlink_prefix[] = { '/', '.', '.', '/' };\r
+# define dlink_prefix_len 4\r
+ assert_link(link);\r
+ if (link->link.dlink != NULL)\r
+ return link->link.dlink;\r
+ bytes = 0;\r
+ setld = link->link.setld;\r
+ if (setld == NULL)\r
+ eprintf("No setld in dlink\n");\r
+ classld = setld->classld;\r
+ if (classld == NULL)\r
+ eprintf("No classld in dlink\n");\r
+ if (classld->root_class != NULL)\r
+ eprintf("Cannot dlink local class \"%s\"\n", classld->root_class->name);\r
+ namelist_iter = classld->namelist;\r
+ setpass = 0;\r
+ count_bytes_in_namelist:\r
+ while (namelist_iter != NULL)\r
+ { bytep = namelist_iter->name;\r
+ while (*bytep++);\r
+ bytes += (bytep - namelist_iter->name);\r
+ namelist_iter = namelist_iter->nextsib;\r
+ }\r
+ if (setpass == 0)\r
+ { setpass = 1;\r
+ namelist_iter = setld->namelist;\r
+ goto count_bytes_in_namelist;\r
+ }\r
+ bytes += dlink_prefix_len;\r
+ link->link.dlink = stack_alloc(&namepages, bytes);\r
+ for (bytes = 0; bytes < dlink_prefix_len; bytes++)\r
+ link->link.dlink[bytes] = dlink_prefix[bytes];\r
+ namelist_iter = classld->namelist;\r
+ setpass = 0;\r
+ delimiter = APC_CLASS_DELIMITER;\r
+ copy_bytes_in_namelist:\r
+ while (namelist_iter != NULL)\r
+ { bytep = namelist_iter->name;\r
+ while (*bytep)\r
+ link->link.dlink[bytes++] = *bytep++;\r
+ link->link.dlink[bytes++] = delimiter;\r
+ namelist_iter = namelist_iter->nextsib;\r
+ }\r
+ if (setpass == 0)\r
+ { setpass = 1;\r
+ namelist_iter = setld->namelist;\r
+ delimiter = APC_SET_DELIMITER;\r
+ link->link.dlink[bytes - 1] = delimiter; //overwrite last delimiter\r
+ goto copy_bytes_in_namelist;\r
+ }\r
+ link->link.dlink[bytes] = '\0'; //tailing '\0' null termination\r
+ return link->link.dlink;\r
+}\r
+\r
+/* Get a setdata's next sibling */\r
+union ir_setdata_t* ir_setdata_nextsib\r
+( union ir_setdata_t* setdata )\r
+{ return setdata->header.nextsib; }\r
+\r
+/* Get a setdata's name */\r
+uint8_t* ir_setdata_name\r
+( union ir_setdata_t* setdata )\r
+{ return setdata->header.data_name; }\r
+\r
+/* Get a setdata's filename */\r
+uint8_t* ir_setdata_filename\r
+( union ir_setdata_t* setdata )\r
+{ return setdata->header.src_filename; }\r
+\r
+/* Get a setdata's file position */\r
+long ir_setdata_fpos\r
+( union ir_setdata_t* setdata )\r
+{ return setdata->header.filepos; }\r
+\r
+/* Set a setdata's file position */\r
+void ir_setdata_assign_fpos\r
+( union ir_setdata_t* setdata,\r
+ long newpos\r
+)\r
+{ setdata->header.filepos = newpos; }\r
+\r
+/* Assign a setdatas name */\r
+void ir_setdata_assign_name\r
+( union ir_setdata_t* setdata, uint8_t* name )\r
+{ setdata->header.data_name = name;}\r
+\r
+/* Return a framebox's specified framesheet */\r
+union ir_setdata_t* ir_framebox_framesheet\r
+( union ir_setdata_t* fbox,\r
+ apc_facing facing\r
+)\r
+{ if (fbox->header.type != FBDAT)\r
+ eprintf("Data %s is not a framebox\n", fbox->header.data_name);\r
+ return (union ir_setdata_t*) &fbox->framebox.framesheets[facing];\r
+}\r
+\r
+/* Return a framebox's specified mapsheet */\r
+union ir_setdata_t* ir_framebox_mapsheet\r
+( union ir_setdata_t* fbox,\r
+ apc_facing facing\r
+)\r
+{ if (fbox->header.type != FBDAT)\r
+ eprintf("Data %s is not a framebox\n", fbox->header.data_name);\r
+ return (union ir_setdata_t*) &fbox->framebox.mapsheets[facing];\r
+}\r
+\r
+/* Return a framedata's frame info */\r
+struct ir_frameinfo_t* ir_framedata_frameinfo\r
+( union ir_setdata_t* framedata )\r
+{ if (framedata->header.type != MSDAT && framedata->header.type != FSDAT)\r
+ eprintf("Data %s is not a framedata\n", framedata->header.data_name);\r
+ return &framedata->mapsheet.frameinfo;\r