Update README.md

README.md

@@ -33,3 +33,57 @@ configs:
   - split: train
     path: data/train-*
 ---
+```python
+import re
+import json
+from datasets import load_dataset
+
+
+ds = load_dataset("rasdani/github-patches-10k-sample-sorted", split="train")
+
+
+def normalize_diff(diff_text: str) -> str:
+    diff_text = re.sub(r'(?m)^index [^\n]*\n', '', diff_text)
+    diff_text = re.sub(r'(?m)^(@@[^@]*@@).*', r'\1', diff_text)
+    return diff_text
+
+def filter_diff_by_files(diff: str, touched_files: set) -> str:
+    """Filter a git diff to only include changes for specific files."""
+    if not touched_files:
+        return diff
+    
+    lines = diff.split('\n')
+    filtered_lines = []
+    include_section = False
+    
+    for line in lines:
+        if line.startswith('diff --git'):
+            # Check if this file should be included
+            # Extract the file path from "diff --git a/path b/path"
+            match = re.match(r'diff --git a/(.*?) b/', line)
+            if match:
+                file_path = match.group(1)
+                include_section = file_path in touched_files
+            else:
+                include_section = False
+        
+        if include_section:
+            filtered_lines.append(line)
+    
+    return '\n'.join(filtered_lines)
+
+def create_golden_diff(example):
+    before_paths = [b["path"] for b in example["before_files"]]
+    after_paths = [a["path"] for a in example["after_files"]]
+    touched_files = set(before_paths) | set(after_paths)
+    filtered_diff = filter_diff_by_files(example["pr_diff"], touched_files)
+    golden_diff = normalize_diff(filtered_diff)
+    for path in touched_files:
+        assert path in golden_diff, f"Path {path} not found in golden diff {golden_diff}"
+    verification_info = json.dumps({"golden_diff": golden_diff})
+    return {"golden_diff": golden_diff, "verification_info": verification_info}
+
+
+ds_gen = ds.map(create_golden_diff, num_proc=10)
+ds_gen.push_to_hub("rasdani/github-patches-genesys-debug")
+```