first commit

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/rag_cut/parsers/ppt_parser.py

@@ -0,0 +1,30 @@
+"""PPT/PPTX parser: convert to PDF, then reuse PdfParser."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+from rag_cut.models import Block
+from rag_cut.parsers.base import BaseParser
+from rag_cut.parsers.office_to_pdf import convert_to_pdf
+from rag_cut.parsers.pdf_parser import PdfParser
+
+
+class PptParser(BaseParser):
+    """Parse presentations by converting to PDF and delegating to PdfParser."""
+
+    def __init__(self) -> None:
+        self._pdf_parser = PdfParser()
+
+    def parse(self, path: Path, assets_dir: Path) -> list[Block]:
+        assets_dir.mkdir(parents=True, exist_ok=True)
+        pdf_dir = assets_dir / "_conversion"
+        pdf_path = convert_to_pdf(path, pdf_dir)
+
+        blocks = self._pdf_parser.parse(pdf_path, assets_dir)
+        source_fmt = path.suffix.lower().lstrip(".")
+        for block in blocks:
+            block.meta.setdefault("source_format", source_fmt)
+            if page := block.meta.get("page"):
+                block.meta["slide"] = page
+        return blocks