[PATCH 18/27] scripts/kernel-doc.py: move file lists to the parser function

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Instead of setting file lists at __init__ time, move it to
the actual parsing function. This allows adding more files
to be parsed in real time, by calling parse function multiple
times.

With the new way, the export_files logic was rewritten to
avoid parsing twice EXPORT_SYMBOL for partial matches.

Please notice that, with this logic, it can still read the
same file twice when export_file is used.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
 scripts/kernel-doc.py          |  7 +++----
 scripts/lib/kdoc/kdoc_files.py | 37 ++++++++++++++++------------------
 2 files changed, 20 insertions(+), 24 deletions(-)

diff --git a/scripts/kernel-doc.py b/scripts/kernel-doc.py
index 6c3179a2da65..a687a7abb3b9 100755
--- a/scripts/kernel-doc.py
+++ b/scripts/kernel-doc.py
@@ -199,14 +199,13 @@ def main():
     else:
         out_style = RestFormat()
 
-    kfiles = KernelFiles(files=args.files, verbose=args.verbose,
+    kfiles = KernelFiles(verbose=args.verbose,
                          out_style=out_style, werror=args.werror,
                          wreturn=args.wreturn, wshort_desc=args.wshort_desc,
                          wcontents_before_sections=args.wcontents_before_sections,
-                         modulename=args.modulename,
-                         export_file=args.export_file)
+                         modulename=args.modulename)
 
-    kfiles.parse()
+    kfiles.parse(args.files, export_file=args.export_file)
 
     for t in kfiles.msg(enable_lineno=args.enable_lineno, export=args.export,
                           internal=args.internal, symbol=args.symbol,
diff --git a/scripts/lib/kdoc/kdoc_files.py b/scripts/lib/kdoc/kdoc_files.py
index 434fc66a9dad..4a6e75dbdbdd 100755
--- a/scripts/lib/kdoc/kdoc_files.py
+++ b/scripts/lib/kdoc/kdoc_files.py
@@ -123,7 +123,7 @@ class KernelFiles():
         self.config.log.error("Cannot find file %s", fname)
         self.config.errors += 1
 
-    def __init__(self, files=None, verbose=False, out_style=None,
+    def __init__(self, verbose=False, out_style=None,
                  werror=False, wreturn=False, wshort_desc=False,
                  wcontents_before_sections=False,
                  logger=None, modulename=None, export_file=None):
@@ -180,51 +180,48 @@ class KernelFiles():
         self.config.src_tree = os.environ.get("SRCTREE", None)
 
         self.out_style = out_style
-        self.export_file = export_file
 
         # Initialize internal variables
 
         self.config.errors = 0
         self.results = []
 
-        self.file_list = files
         self.files = set()
+        self.export_files = set()
 
-    def parse(self):
+    def parse(self, file_list, export_file=None):
         """
         Parse all files
         """
 
         glob = GlobSourceFiles(srctree=self.config.src_tree)
 
-        # Let's use a set here to avoid duplicating files
+        # Prevent parsing the same file twice to speedup parsing and
+        # avoid reporting errors multiple times
 
-        for fname in glob.parse_files(self.file_list, self.file_not_found_cb):
+        for fname in glob.parse_files(file_list, self.file_not_found_cb):
             if fname in self.files:
                 continue
 
-            self.files.add(fname)
-
             res = self.parse_file(fname)
+
             self.results.append((res.fname, res.entries))
-
-        if not self.files:
-            sys.exit(1)
+            self.files.add(fname)
 
         # If a list of export files was provided, parse EXPORT_SYMBOL*
-        # from the ones not already parsed
+        # from files that weren't fully parsed
 
-        if self.export_file:
-            files = self.files
+        if not export_file:
+            return
 
-            glob = GlobSourceFiles(srctree=self.config.src_tree)
+        self.export_files |= self.files
 
-            for fname in glob.parse_files(self.export_file,
-                                          self.file_not_found_cb):
-                if fname not in files:
-                    files.add(fname)
+        glob = GlobSourceFiles(srctree=self.config.src_tree)
 
-                    self.process_export_file(fname)
+        for fname in glob.parse_files(export_file, self.file_not_found_cb):
+            if fname not in self.export_files:
+                self.process_export_file(fname)
+                self.export_files.add(fname)
 
     def out_msg(self, fname, name, arg):
         """
-- 
2.48.1





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