[docs-next PATCH v2 04/11] kernel-doc: abstract filename mapping

[Jani Nikula <jani.nikula@xxxxxxxxx>]

Reduce duplication in follow-up work. No functional changes.

Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
 scripts/kernel-doc | 27 ++++++++++++++++++---------
 1 file changed, 18 insertions(+), 9 deletions(-)

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index a6f82c812c15..516d95fcefb7 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -2730,26 +2730,35 @@ sub local_unescape($) {
 	return $text;
 }
 
-sub process_file($) {
+sub map_filename($) {
     my $file;
-    my $identifier;
-    my $func;
-    my $descr;
-    my $in_purpose = 0;
-    my $initial_section_counter = $section_counter;
     my ($orig_file) = @_;
-    my $leading_space;
 
     if (defined($ENV{'SRCTREE'})) {
 	$file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
-    }
-    else {
+    } else {
 	$file = $orig_file;
     }
+
     if (defined($source_map{$file})) {
 	$file = $source_map{$file};
     }
 
+    return $file;
+}
+
+sub process_file($) {
+    my $file;
+    my $identifier;
+    my $func;
+    my $descr;
+    my $in_purpose = 0;
+    my $initial_section_counter = $section_counter;
+    my ($orig_file) = @_;
+    my $leading_space;
+
+    $file = map_filename($orig_file);
+
     if (!open(IN,"<$file")) {
 	print STDERR "Error: Cannot open file $file\n";
 	++$errors;
-- 
2.1.4

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