Create token_consistency.yaml

Author: aditya0by0

.github/workflows/token_consistency.yaml

@@ -0,0 +1,60 @@
+name: Check consistency of tokens.txt file
+
+on:  [push, pull_request]
+
+jobs:
+  check_tokens:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Get previous tokens.txt version
+        run: |
+          git fetch origin main
+          git diff origin/main -- chebai/preprocessing/bin/smiles_token/tokens.txt > tokens_diff.txt || echo "No previous tokens.txt found"
+
+      - name: Check for deleted or added lines in tokens.txt
+        run: |
+          if [ -f tokens_diff.txt ]; then
+
+            # Check for deleted lines (lines starting with '-')
+            deleted_lines=$(grep '^-' tokens_diff.txt | grep -v '^---' | sed 's/^-//' || true)
+            if [ -n "$deleted_lines" ]; then
+              echo "Error: Lines have been deleted from tokens.txt. file"
+              echo -e "Deleted Lines: \n$deleted_lines"
+              exit 1
+            fi
+
+            # Check for added lines (lines starting with '+')
+            added_lines=$(grep '^+' tokens_diff.txt | grep -v '^+++' | sed 's/^+//' || true)
+            if [ -n "$added_lines" ]; then
+
+              # Count how many lines have been added
+              num_added_lines=$(echo "$added_lines" | wc -l)
+
+              # Get last `n` lines (equal to num_added_lines) of tokens.tx
+              last_lines=$(tail -n "$num_added_lines" chebai/preprocessing/bin/smiles_token/tokens.txt)
+
+              # Check if the added lines are at the end of the file
+              if [ "$added_lines" != "$last_lines" ]; then
+
+                # Find lines that were added but not appended at the end of the file
+                non_appended_lines=$(diff <(echo "$added_lines") <(echo "$last_lines") | grep '^<' | sed 's/^< //')
+
+                echo "Error: New lines have been added, but they are not at the end of tokens.txt."
+                echo -e "Added lines that are not at end of file: \n$non_appended_lines"
+                exit 1
+              fi
+            fi
+
+            if [ "$added_lines" == "" ]; then
+                echo "tokens.txt validation successful: No lines were deleted, and no new lines were added."
+            else
+                echo "tokens.txt validation successful: No lines were deleted, and new lines were correctly appended at the end."
+            fi
+
+          else
+            echo "No previous version of tokens.txt found."
+          fi