CM-53667: improve ignore logging (#349)

Author: gotbadger

cycode/cli/files_collector/walk_ignore.py

@@ -1,9 +1,11 @@
 import os
 from collections.abc import Generator, Iterable
 
-from cycode.cli.logger import logger
+from cycode.cli.logger import get_logger
 from cycode.cli.utils.ignore_utils import IgnoreFilterManager
 
+logger = get_logger('Ignores')
+
 _SUPPORTED_IGNORE_PATTERN_FILES = {
     '.gitignore',
     '.cycodeignore',
@@ -30,7 +32,7 @@ def _collect_top_level_ignore_files(path: str) -> list[str]:
         for ignore_file in _SUPPORTED_IGNORE_PATTERN_FILES:
             ignore_file_path = os.path.join(dir_path, ignore_file)
             if os.path.exists(ignore_file_path):
-                logger.debug('Apply top level ignore file: %s', ignore_file_path)
+                logger.debug('Reading top level ignore file: %s', ignore_file_path)
                 ignore_files.append(ignore_file_path)
     return ignore_files
 
@@ -41,4 +43,17 @@ def walk_ignore(path: str) -> Generator[tuple[str, list[str], list[str]], None,
         global_ignore_file_paths=_collect_top_level_ignore_files(path),
         global_patterns=_DEFAULT_GLOBAL_IGNORE_PATTERNS,
     )
-    yield from ignore_filter_manager.walk()
+    for dirpath, dirnames, filenames, ignored_dirnames, ignored_filenames in ignore_filter_manager.walk_with_ignored():
+        rel_dirpath = '' if dirpath == path else os.path.relpath(dirpath, path)
+        display_dir = rel_dirpath or '.'
+        for is_dir, names in (
+            (True, ignored_dirnames),
+            (False, ignored_filenames),
+        ):
+            for name in names:
+                full_path = os.path.join(path, display_dir, name)
+                if is_dir:
+                    full_path = os.path.join(full_path, '*')
+                logger.debug('Ignoring match %s', full_path)
+
+        yield dirpath, dirnames, filenames

cycode/cli/utils/ignore_utils.py

@@ -388,19 +388,38 @@ def is_ignored(self, path: str) -> Optional[bool]:
             return matches[-1].is_exclude
         return None
 
-    def walk(self, **kwargs) -> Generator[tuple[str, list[str], list[str]], None, None]:
-        """Wrap os.walk() without ignored files and subdirectories and kwargs are passed to walk."""
+    def walk_with_ignored(
+        self, **kwargs
+    ) -> Generator[tuple[str, list[str], list[str], list[str], list[str]], None, None]:
+        """Wrap os.walk() and also return lists of ignored directories and files.
+
+        Yields tuples: (dirpath, included_dirnames, included_filenames, ignored_dirnames, ignored_filenames)
+        """
         for dirpath, dirnames, filenames in os.walk(self.path, topdown=True, **kwargs):
             rel_dirpath = '' if dirpath == self.path else os.path.relpath(dirpath, self.path)
 
+            original_dirnames = list(dirnames)
+            included_dirnames = []
+            ignored_dirnames = []
+            for d in original_dirnames:
+                if self.is_ignored(os.path.join(rel_dirpath, d)):
+                    ignored_dirnames.append(d)
+                else:
+                    included_dirnames.append(d)
+
             # decrease recursion depth of os.walk() by ignoring subdirectories because of topdown=True
             # slicing ([:]) is mandatory to change dict in-place!
-            dirnames[:] = [d for d in dirnames if not self.is_ignored(os.path.join(rel_dirpath, d))]
+            dirnames[:] = included_dirnames
 
-            # remove ignored files
-            filenames = [f for f in filenames if not self.is_ignored(os.path.join(rel_dirpath, f))]
+            included_filenames = []
+            ignored_filenames = []
+            for f in filenames:
+                if self.is_ignored(os.path.join(rel_dirpath, f)):
+                    ignored_filenames.append(f)
+                else:
+                    included_filenames.append(f)
 
-            yield dirpath, dirnames, filenames
+            yield dirpath, dirnames, included_filenames, ignored_dirnames, ignored_filenames
 
     @classmethod
     def build(