Improve design db file syntax.

diff --git a/bricksplom.py b/bricksplom.py
index a8fe53c2ae0f2c5e6da764fed81a4b753d3b67e7..914285be7a65ad19e57af145d1bb62f3f17f624d 100755 (executable)
--- a/bricksplom.py
+++ b/bricksplom.py
@@ -16,7 +16,9 @@ CHAR_NEWLINE = '\n'
 CHAR_SEP_TOKEN = ' '
 CHAR_COMMENT = '#'
 CHAR_DESIGN_ALT = '='
-CHAR_DESIGN_DESC = '_'
+CHAR_ATTR_EQ = '='
+SEP_DESIGN_DESC = ' #'
+SEP_DESIGN_ATTR = ' |'
 CHAR_COLL_INDENT = ' '
 CHAR_COLL_IN = '+'
 CHAR_COLL_OUT = '-'
@@ -296,16 +298,21 @@ class BrickDesign(Textfiled, Lookupable):
                                 for line in cls.lines_of(path)]:
             assert design_id not in collected, design_id
             assert len(body) > 1
-            char_type, body = body[0], body[1:]
-            assert char_type in {CHAR_DESIGN_ALT, CHAR_DESIGN_DESC}
-            if char_type == CHAR_DESIGN_ALT:
-                alts[body] = alts.get(body, set())
-                alts[body].add(design_id)
+            if body[0] == CHAR_DESIGN_ALT:
+                alt_id = body[1:]
+                alts[alt_id] = alts.get(alt_id, set())
+                alts[alt_id].add(design_id)
                 collected[design_id] = cls(design_id)
             else:
-                n_studs_str, desc = cls.tokify(body, 2)
-                n_studs = int(n_studs_str) if n_studs_str.isdigit() else -1
-                collected[design_id] = cls(design_id, n_studs, desc)
+                assert SEP_DESIGN_DESC in body
+                metadata, desc = body.split(SEP_DESIGN_DESC, maxsplit=1)
+                kwargs: dict[str, str | int] = {'description': desc}
+                for attr in metadata.split(SEP_DESIGN_ATTR):
+                    assert CHAR_ATTR_EQ in attr
+                    a_key, a_val_str = attr.split(CHAR_ATTR_EQ, maxsplit=1)
+                    assert a_val_str.isdigit()
+                    kwargs[a_key] = int(a_val_str)
+                collected[design_id] = cls(design_id, **kwargs)
         for id_, alternate_ids in alts.items():
             collected[id_].alternate_ids = alternate_ids
             for alt_id in alternate_ids:
@@ -315,11 +322,12 @@ class BrickDesign(Textfiled, Lookupable):
     def raw(
             self
             ) -> str:
-        return (f'{self.id_indented()} '
-                + (f'={self.alternate_to.id_}' if self.alternate_to
-                   else (CHAR_DESIGN_DESC
-                         + ('?' if self._n_studs < 0 else str(self._n_studs))
-                         + f' {self._description}')))
+        return (
+            f'{self.id_indented()} '
+            + (f'{CHAR_DESIGN_ALT}{self.alternate_to.id_}' if self.alternate_to
+               else (('' if self._n_studs < 0
+                      else f'n_studs{CHAR_ATTR_EQ}{self._n_studs}')
+                     + f'{SEP_DESIGN_DESC}{self._description}')))
 
 
 class Brick(Textfiled, WithDb, Lookupable):