feat(scanner): add filename scanning support

Author: chalmerlowe

scripts/version_scanner/tests/unit/test_version_scanner.py

@@ -67,6 +67,30 @@ def test_scan_file_ignores_pragma(tmp_path):
     results = scan_file(str(test_file), rules)
     assert len(results) == 0
 
+def test_scan_file_ignores_next_line(tmp_path):
+    test_file = tmp_path / "test.py"
+    test_file.write_text("# version-scanner: ignore-next-line\npython_requires = '>=3.7'\n")
+    
+    rules = [
+        {"name": "python_requires_check", "pattern": re.compile(r"python_requires\s*=\s*['\"]>=3\.7['\"]")}
+    ]
+    
+    results = scan_file(str(test_file), rules)
+    assert len(results) == 0
+
+def test_scan_repository_flags_filename(tmp_path):
+    test_file = tmp_path / "test-3.9.txt"
+    test_file.write_text("clean content\n")
+    
+    rules = []
+    
+    from version_scanner import scan_repository
+    results = scan_repository(str(tmp_path), rules, version_string="3.9")
+    
+    assert len(results) == 1
+    assert results[0]["rule_name"] == "filename_match"
+    assert results[0]["matched_string"] == "3.9"
+
 # Test directory scan simulation
 def test_directory_scan(tmp_path):
     # Create dummy files

scripts/version_scanner/version_scanner.py

@@ -106,7 +106,14 @@ def scan_file(file_path: str, compiled_rules: List[Dict[str, re.Pattern]]) -> Li
 
     try:
         with open(file_path, 'r', encoding='utf-8', errors='ignore') as f:
+            skip_next = False
             for line_num, line in enumerate(f, 1):
+                if skip_next:
+                    skip_next = False
+                    continue
+                if "version-scanner: ignore-next-line" in line:
+                    skip_next = True
+                    continue
                 if "version-scanner: ignore" in line:
                     continue
                 for rule in compiled_rules:
@@ -339,7 +346,8 @@ def scan_repository(
     root_path: str,
     rules: List[Dict[str, str]],
     target_packages: List[str] = None,
-    ignore_dirs: List[str] = None
+    ignore_dirs: List[str] = None,
+    version_string: str = None
 ) -> List[Dict[str, str]]:
     """
     Scan repository for matching patterns.
@@ -398,6 +406,15 @@ def scan_repository(
             file_path = os.path.join(root, file)
             matches = scan_file(file_path, compiled_rules)
 
+            # Add filename match if applicable
+            if version_string and version_string in file:
+                matches.append({
+                    "rule_name": "filename_match",
+                    "line_number": 0,
+                    "matched_string": version_string,
+                    "context_line": f"Filename contains {version_string}"
+                })
+            
             # Compute display path and package name
             rel_file_path = os.path.relpath(file_path, root_path)
 
@@ -528,7 +545,7 @@ def main():
         print(f"Loaded {len(ignore_dirs)} ignore patterns from {ignore_file_path}")
 
     # Scan repository
-    all_matches = scan_repository(args.path, rules, target_packages, ignore_dirs)
+    all_matches = scan_repository(args.path, rules, target_packages, ignore_dirs, version_string=args.version)
 
     print(f"\nFound {len(all_matches)} matches.")
     for m in all_matches[:10]: # Show first 10