[PATCH 01/33] scripts: get_abi.pl: change script to allow parsing in ReST mode

Mauro Carvalho Chehab
2020-10-29T00:57:22Z

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

Right now, several ABI files won't parse as ReST, as they
contain severe violations to the spec, with makes the script
to crash.

So, the code has a sanity logic with escapes bad code and
cleans tags that can cause Sphinx to crash.

Add support for disabling this mode.

Right now, as enabling rst-mode causes crash, it is disabled
by default.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
scripts/get_abi.pl | 74 ++++++++++++++++++++++++++++++----------------
1 file changed, 48 insertions(+), 26 deletions(-)

diff --git a/scripts/get_abi.pl b/scripts/get_abi.pl
index c738cb795514..107672cdacb3 100755
--- a/scripts/get_abi.pl
+++ b/scripts/get_abi.pl
@@ -12,8 +12,14 @@ my $man;
my $debug;
my $prefix="Documentation/ABI";

+#
+# If true, assumes that the description is formatted with ReST
+#
+my $description_is_rst = 0;
+
GetOptions(
"debug|d+" => \$debug,
+ "rst-source!" => \$description_is_rst,
"dir=s" => \$prefix,
'help|?' => \$help,
man => \$man
@@ -137,14 +143,15 @@ sub parse_abi {
next;
}
if ($tag eq "description") {
- next if ($content =~ m/^\s*$/);
- if ($content =~ m/^(\s*)(.*)/) {
- my $new_content = $2;
- $space = $new_tag . $sep . $1;
- while ($space =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
- $space =~ s/./ /g;
- $data{$what}->{$tag} .= "$new_content\n";
+ # Preserve initial spaces for the first line
+ $content = ' ' x length($new_tag) . $sep . $content;
+ $content =~ s,^(\s*):,$1 ,;
+ if ($content =~ m/^(\s*)(.*)$/) {
+ $space = $1;
+ $content = $2;
}
+ while ($space =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
+ $data{$what}->{$tag} .= $content;
} else {
$data{$what}->{$tag} = $content;
}
@@ -160,11 +167,15 @@ sub parse_abi {

if ($tag eq "description") {
if (!$data{$what}->{description}) {
- next if (m/^\s*\n/);
+ s/^($space)//;
if (m/^(\s*)(.*)/) {
- $space = $1;
- while ($space =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
- $data{$what}->{$tag} .= "$2\n";
+ my $sp = $1;
+ while ($sp =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
+ my $content = "$sp$2";
+
+ $content =~ s/^($space)//;
+
+ $data{$what}->{$tag} .= "$content";
}
} else {
my $content = $_;
@@ -274,23 +285,27 @@ sub output_rest {
print "Defined on file :ref:`$file <$fileref>`\n\n" if ($type ne "File");

my $desc = $data{$what}->{description};
- $desc =~ s/^\s+//;
-
- # Remove title markups from the description, as they won't work
- $desc =~ s/\n[\-\*\=\^\~]+\n/\n/g;

if (!($desc =~ /^\s*$/)) {
- if ($desc =~ m/\:\n/ || $desc =~ m/\n[\t ]+/ || $desc =~ m/[\x00-\x08\x0b-\x1f\x7b-\xff]/) {
- # put everything inside a code block
- $desc =~ s/\n/\n /g;
-
- print "::\n\n";
- print " $desc\n\n";
- } else {
- # Escape any special chars from description
- $desc =~s/([\x00-\x08\x0b-\x1f\x21-\x2a\x2d\x2f\x3c-\x40\x5c\x5e-\x60\x7b-\xff])/\\$1/g;
-
+ if ($description_is_rst) {
print "$desc\n\n";
+ } else {
+ $desc =~ s/^\s+//;
+
+ # Remove title markups from the description, as they won't work
+ $desc =~ s/\n[\-\*\=\^\~]+\n/\n\n/g;
+
+ if ($desc =~ m/\:\n/ || $desc =~ m/\n[\t ]+/ || $desc =~ m/[\x00-\x08\x0b-\x1f\x7b-\xff]/) {
+ # put everything inside a code block
+ $desc =~ s/\n/\n /g;
+
+ print "::\n\n";
+ print " $desc\n\n";
+ } else {
+ # Escape any special chars from description
+ $desc =~s/([\x00-\x08\x0b-\x1f\x21-\x2a\x2d\x2f\x3c-\x40\x5c\x5e-\x60\x7b-\xff])/\\$1/g;
+ print "$desc\n\n";
+ }
}
} else {
print "DESCRIPTION MISSING for $what\n\n" if (!$data{$what}->{is_file});
@@ -382,7 +397,7 @@ abi_book.pl - parse the Linux ABI files and produce a ReST book.

=head1 SYNOPSIS

-B<abi_book.pl> [--debug] [--man] [--help] [--dir= ] <COMAND> [<ARGUMENT>]
+B<abi_book.pl> [--debug] [--man] [--help] --[(no-)rst-source] [--dir= ] <COMAND> [<ARGUMENT>]

Where <COMMAND> can be:

@@ -405,6 +420,13 @@ B<validate> - validate the ABI contents
Changes the location of the ABI search. By default, it uses
the Documentation/ABI directory.

+=item B<--rst-source> and B<--no-rst-source>
+
+The input file may be using ReST syntax or not. Those two options allow
+selecting between a rst-compliant source ABI (--rst-source), or a
+plain text that may be violating ReST spec, so it requres some escaping
+logic (--no-rst-source).
+
=item B<--debug>

Put the script in verbose mode, useful for debugging. Can be called multiple
--
2.26.2