From 2bef60864abfaff561f782d61f2f43323451a37a Mon Sep 17 00:00:00 2001
From: BiksG <4414427+bikashgupta11@users.noreply.github.com>
Date: Sat, 23 Nov 2019 19:57:25 +0530
Subject: [PATCH] Index out of range in Lattice Parser

If a content of a table spills outside of the bounding line then it gets index of error. As table cell dosent have the index which is getting accessed due to spilling of table hence we are getting Index Out of range
---
 camelot/parsers/lattice.py | 38 ++++++++++++++++++++------------------
 1 file changed, 20 insertions(+), 18 deletions(-)

diff --git a/camelot/parsers/lattice.py b/camelot/parsers/lattice.py
index 197ff9f..7fcefb6 100644
--- a/camelot/parsers/lattice.py
+++ b/camelot/parsers/lattice.py
@@ -155,23 +155,24 @@ class Lattice(BaseParser):
         """
         indices = []
         for r_idx, c_idx, text in idx:
-            for d in shift_text:
-                if d == "l":
-                    if t.cells[r_idx][c_idx].hspan:
-                        while not t.cells[r_idx][c_idx].left:
-                            c_idx -= 1
-                if d == "r":
-                    if t.cells[r_idx][c_idx].hspan:
-                        while not t.cells[r_idx][c_idx].right:
-                            c_idx += 1
-                if d == "t":
-                    if t.cells[r_idx][c_idx].vspan:
-                        while not t.cells[r_idx][c_idx].top:
-                            r_idx -= 1
-                if d == "b":
-                    if t.cells[r_idx][c_idx].vspan:
-                        while not t.cells[r_idx][c_idx].bottom:
-                            r_idx += 1
+            if r_idx in t.cells:
+                for d in shift_text:
+                    if d == "l":
+                        if t.cells[r_idx][c_idx].hspan:
+                            while not t.cells[r_idx][c_idx].left:
+                                c_idx -= 1
+                    if d == "r":
+                        if t.cells[r_idx][c_idx].hspan:
+                            while not t.cells[r_idx][c_idx].right:
+                                c_idx += 1
+                    if d == "t":
+                        if t.cells[r_idx][c_idx].vspan:
+                            while not t.cells[r_idx][c_idx].top:
+                                r_idx -= 1
+                    if d == "b":
+                        if t.cells[r_idx][c_idx].vspan:
+                            while not t.cells[r_idx][c_idx].bottom:
+                                r_idx += 1
             indices.append((r_idx, c_idx, text))
         return indices
 
@@ -355,7 +356,8 @@ class Lattice(BaseParser):
                         table, indices, shift_text=self.shift_text
                     )
                     for r_idx, c_idx, text in indices:
-                        table.cells[r_idx][c_idx].text = text
+                        if r_idx in table.cells:
+                            table.cells[r_idx][c_idx].text = text
         accuracy = compute_accuracy([[100, pos_errors]])
 
         if self.copy_text is not None: