file based filter

Author: xinzhengzhang

refresh.template.py

@@ -828,7 +828,9 @@ def _get_commands(target: str, flags: str):
     # Log clear completion messages
     log_info(f">>> Analyzing commands used in {target}")
 
-    additional_flags = shlex.split(flags) + sys.argv[1:]
+    additional_flags = shlex.split(flags) + [arg for arg in sys.argv[1:] if not arg.startswith('--file=')]
+    file_flags = [arg for arg in sys.argv[1:] if arg.startswith('--file=')]
+    assert len(file_flags) < 2, f"Only one or zero --file is supported current args = {sys.argv[1:]}"
 
     # Detect anything that looks like a build target in the flags, and issue a warning.
     # Note that positional arguments after -- are all interpreted as target patterns. (If it's at the end, then no worries.)
@@ -851,6 +853,18 @@ def _get_commands(target: str, flags: str):
     if {exclude_external_sources}:
         # For efficiency, have bazel filter out external targets (and therefore actions) before they even get turned into actions or serialized and sent to us. Note: this is a different mechanism than is used for excluding just external headers.
         target_statment = f"filter('^(//|@//)',{target_statment})"
+    if (len(file_flags) == 1):
+        # Strip --file=
+        file_path = file_flags[0][7:]
+        # Query escape
+        file_path = file_path.replace("+", "\+").replace("-", "\-")
+        # For header file we try to find from hdrs and srcs to get the targets
+        if file_path.endswith('.h'):
+            # Since attr function can't query with full path, get the file name to query
+            head, tail = os.path.split(file_path)
+            target_statment = f"attr(hdrs, '{tail}', {target_statment}) + attr(srcs, '{tail}', {target_statment})"
+        else:
+            target_statment = f"inputs('{file_path}', {target_statment})"
     aquery_args = [
         'bazel',
         'aquery',