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docs: kernel-doc: Get rid of xml_escape() and friends 

XML escaping is a worry that came with DocBook, which we no longer have any
dealings with.  So get rid of the useless xml_escape()/xml_unescape()
functions.  No change to the generated output.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jonathan Corbet 2018-02-05 12:40:15 -07:00
parent 35277995e1
commit 0bba924ce9
1 changed files with 9 additions and 56 deletions
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65
scripts/kernel-doc
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@ -553,10 +553,9 @@ sub output_highlight {
}
if ($line eq ""){
if (! $output_preformatted) {
print $lineprefix, local_unescape($blankline);
print $lineprefix, $blankline;
}
} else {
$line =~ s/\\\\\\/\&/g;
if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
print "\\&$line";
} else {
@ -751,9 +750,6 @@ sub output_highlight_rst {
my $contents = join "\n",@_;
my $line;
# undo the evil effects of xml_escape() earlier
$contents = xml_unescape($contents);
eval $dohighlight;
die $@ if $@;
@ -1422,8 +1418,6 @@ sub push_parameter($$$$) {
}
}
$param = xml_escape($param);
# strip spaces from $param so that it is one continuous string
# on @parameterlist;
# this fixes a problem where check_sections() cannot find
@ -1748,47 +1742,6 @@ sub process_proto_type($$) {
}
}
# xml_escape: replace <, >, and & in the text stream;
#
# however, formatting controls that are generated internally/locally in the
# kernel-doc script are not escaped here; instead, they begin life like
# $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
# are converted to their mnemonic-expected output, without the 4 * '\' & ':',
# just before actual output; (this is done by local_unescape())
sub xml_escape($) {
my $text = shift;
if ($output_mode eq "man") {
return $text;
}
$text =~ s/\&/\\\\\\amp;/g;
$text =~ s/\</\\\\\\lt;/g;
$text =~ s/\>/\\\\\\gt;/g;
return $text;
}
# xml_unescape: reverse the effects of xml_escape
sub xml_unescape($) {
my $text = shift;
if ($output_mode eq "man") {
return $text;
}
$text =~ s/\\\\\\amp;/\&/g;
$text =~ s/\\\\\\lt;/</g;
$text =~ s/\\\\\\gt;/>/g;
return $text;
}
# convert local escape strings to html
# local escape strings look like: '\\\\menmonic:' (that's 4 backslashes)
sub local_unescape($) {
my $text = shift;
if ($output_mode eq "man") {
return $text;
}
$text =~ s/\\\\\\\\lt:/</g;
$text =~ s/\\\\\\\\gt:/>/g;
return $text;
}
sub map_filename($) {
my $file;
@ -1889,7 +1842,7 @@ sub process_file($) {
$descr =~ s/^\s*//;
$descr =~ s/\s*$//;
$descr =~ s/\s+/ /g;
$declaration_purpose = xml_escape($descr);
$declaration_purpose = $descr;
$in_purpose = 1;
} else {
$declaration_purpose = "";
@ -1944,7 +1897,7 @@ sub process_file($) {
print STDERR "${file}:$.: warning: contents before sections\n";
++$warnings;
}
dump_section($file, $section, xml_escape($contents));
dump_section($file, $section, $contents);
$section = $section_default;
}
@ -1962,7 +1915,7 @@ sub process_file($) {
$leading_space = undef;
} elsif (/$doc_end/) {
if (($contents ne "") && ($contents ne "\n")) {
dump_section($file, $section, xml_escape($contents));
dump_section($file, $section, $contents);
$section = $section_default;
$contents = "";
}
@ -1981,7 +1934,7 @@ sub process_file($) {
# @parameter line to signify start of description
if ($1 eq "") {
if ($section =~ m/^@/ || $section eq $section_context) {
dump_section($file, $section, xml_escape($contents));
dump_section($file, $section, $contents);
$section = $section_default;
$contents = "";
$new_start_line = $.;
@ -1992,7 +1945,7 @@ sub process_file($) {
} elsif ($in_purpose == 1) {
# Continued declaration purpose
chomp($declaration_purpose);
$declaration_purpose .= " " . xml_escape($1);
$declaration_purpose .= " " . $1;
$declaration_purpose =~ s/\s+/ /g;
} else {
my $cont = $1;
@ -2030,7 +1983,7 @@ sub process_file($) {
# Documentation block end */
} elsif (/$doc_inline_end/) {
if (($contents ne "") && ($contents ne "\n")) {
dump_section($file, $section, xml_escape($contents));
dump_section($file, $section, $contents);
$section = $section_default;
$contents = "";
}
@ -2057,7 +2010,7 @@ sub process_file($) {
$contents = $2;
if ($contents ne "") {
$contents .= "\n";
dump_section($file, $section, xml_escape($contents));
dump_section($file, $section, $contents);
$section = $section_default;
$contents = "";
}
@ -2072,7 +2025,7 @@ sub process_file($) {
} elsif ($state == STATE_DOCBLOCK) {
if (/$doc_end/)
{
dump_doc_section($file, $section, xml_escape($contents));
dump_doc_section($file, $section, $contents);
$section = $section_default;
$contents = "";
$function = "";