linux-kernel - [PATCH 02/33] scripts: get_abi.pl: fix parsing on ReST mode

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Message-Id: <c24fbeb384b36e00c34786a5a3686a83981f067d.1603893146.git.mchehab+huawei@kernel.org>
Date:   Wed, 28 Oct 2020 15:23:00 +0100
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        "Jonathan Corbet" <corbet@....net>,
        "Mauro Carvalho Chehab" <mchehab+huawei@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 02/33] scripts: get_abi.pl: fix parsing on ReST mode

From: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>

When the source ABI file is using ReST notation, the script
should handle whitespaces and lines with care, as otherwise
the file won't be properly recognized.

Address the bugs that are on such part of the script.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 scripts/get_abi.pl | 30 ++++++++++++++----------------
 1 file changed, 14 insertions(+), 16 deletions(-)

diff --git a/scripts/get_abi.pl b/scripts/get_abi.pl
index 107672cdacb3..0c403af86fd5 100755
--- a/scripts/get_abi.pl
+++ b/scripts/get_abi.pl
@@ -151,7 +151,8 @@ sub parse_abi {
 						$content = $2;
 					}
 					while ($space =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
-					$data{$what}->{$tag} .= $content;
+
+					$data{$what}->{$tag} .= "$content\n" if ($content);
 				} else {
 					$data{$what}->{$tag} = $content;
 				}
@@ -166,31 +167,28 @@ sub parse_abi {
 		}
 
 		if ($tag eq "description") {
+			my $content = $_;
+			while ($content =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
 			if (!$data{$what}->{description}) {
-				s/^($space)//;
-				if (m/^(\s*)(.*)/) {
-					my $sp = $1;
-					while ($sp =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
-					my $content = "$sp$2";
-
-					$content =~ s/^($space)//;
-
-					$data{$what}->{$tag} .= "$content";
+				# Preserve initial spaces for the first line
+				if ($content =~ m/^(\s*)(.*)$/) {
+					$space = $1;
+					$content = $2;
 				}
+
+				$data{$what}->{$tag} .= "$content\n" if ($content);
 			} else {
-				my $content = $_;
 				if (m/^\s*\n/) {
 					$data{$what}->{$tag} .= $content;
 					next;
 				}
 
-				while ($content =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
 				$space = "" if (!($content =~ s/^($space)//));
 
-				# Compress spaces with tabs
-				$content =~ s<^ {8}> <\t>;
-				$content =~ s<^ {1,7}\t> <\t>;
-				$content =~ s< {1,7}\t> <\t>;
+#				# Compress spaces with tabs
+#				$content =~ s<^ {8}> <\t>;
+#				$content =~ s<^ {1,7}\t> <\t>;
+#				$content =~ s< {1,7}\t> <\t>;
 				$data{$what}->{$tag} .= $content;
 			}
 			next;
-- 
2.26.2