From 2c468dc8a2f8a13f34b7a02067fcd1d46dba6cb1 Mon Sep 17 00:00:00 2001
From: David Huggins-Daines <dhd@ecolingui.ca>
Date: Thu, 19 Sep 2024 10:02:08 -0400
Subject: [PATCH] fix: handle some invalid PDF cases

---
 playa/pdfparser.py | 7 ++++++-
 playa/utils.py     | 4 +++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/playa/pdfparser.py b/playa/pdfparser.py
index efd2a02..41b327f 100644
--- a/playa/pdfparser.py
+++ b/playa/pdfparser.py
@@ -142,7 +142,12 @@ def flush(self) -> None:
     def do_keyword(self, pos: int, token: PSKeyword) -> None:
         if token is KEYWORD_R:
             # reference to indirect object
-            (_, _object_id), _ = self.pop(2)
+            try:
+                (_, _object_id), _ = self.pop(2)
+            except ValueError:
+                raise PDFSyntaxError(
+                    "Expected generation and object id in indirect object reference"
+                )
             object_id = safe_int(_object_id)
             if object_id is not None:
                 obj = PDFObjRef(self.doc, object_id)
diff --git a/playa/utils.py b/playa/utils.py
index 418887e..cc0f5a2 100644
--- a/playa/utils.py
+++ b/playa/utils.py
@@ -23,7 +23,7 @@
     cast,
 )
 
-from playa.exceptions import PDFTypeError, PDFValueError
+from playa.exceptions import PDFSyntaxError, PDFTypeError, PDFValueError
 
 if TYPE_CHECKING:
     from playa.layout import LTComponent
@@ -246,6 +246,8 @@ def parse_rect(o: Any) -> Rect:
         return float(x0), float(y0), float(x1), float(y1)
     except ValueError:
         raise PDFValueError("Could not parse rectangle")
+    except TypeError:
+        raise PDFSyntaxError("Rectangle contains non-numeric values")
 
 
 def mult_matrix(m1: Matrix, m0: Matrix) -> Matrix: