feat(anki): basic export

src/anki/parser.py

@@ -0,0 +1,57 @@
+from typing import List
+
+import tree_sitter
+from tree_sitter_language_pack import get_language, get_parser
+
+from .file_handler import FileHandler
+from .flashcard import Flashcard
+
+ts_flashcard_query = """
+(call 
+  item: [
+    (call 
+      item: (call 
+        item: (ident) @fncall
+        (group 
+          (number) @id))
+      (content) @front)
+    (call
+      item: (ident) @fncall
+      (group
+        (number) @id
+        (string) @front))
+    ]
+    (#eq? @fncall "flashcard")
+  ((content) @back
+) @flashcard)
+"""
+
+
+class FlashcardParser:
+    typst_language: tree_sitter.Language
+    typst_parser: tree_sitter.Parser
+    flashcard_query: tree_sitter.Query
+
+    def __init__(self):
+        self.typst_language = get_language("typst")
+        self.typst_parser = get_parser("typst")
+        self.flashcard_query = self.typst_language.query(ts_flashcard_query)
+
+    def parse_file(self, file: FileHandler) -> List[Flashcard]:
+        cards = []
+        tree = self.typst_parser.parse(file.get_bytes(), encoding="utf8")
+        captures = self.flashcard_query.captures(tree.root_node)
+
+        n = len(captures["flashcard"]) if captures else 0
+        for idx in range(n):
+            note_id = captures["id"][idx]
+            front = captures["front"][idx]
+            back = captures["back"][idx]
+            card = Flashcard(
+                file.get_node_content(front, True),
+                file.get_node_content(back, True),
+                note_id=int(file.get_node_content(note_id))
+            )
+            card.set_ts_nodes(front, back, note_id)
+            cards.append(card)
+        return cards