doc: dump_cfg_defs.pl: support for docbook output

Added support for generating docbook output (by using the
--docbook option).

doc/scripts/cdefs2doc/dump_cfg_defs.pl

@@ -72,8 +72,12 @@ my @cfg_default; # filled with config var defaults
 my ($cfg_grp_name, $def_cfg_name, $cfg_var_name);
 
 my ($opt_help, $opt_txt, $opt_is_tu, $dbg, $opt_grp_name, $opt_patch);
-my $opt_force_grp_name;
+my ($opt_force_grp_name, $opt_docbook);
 
+# default output formats
+my $output_format_header="HEADER";
+my $output_format_footer="FOOTER";
+my $output_format_varline="VARLINE2";
 
 
 sub show_patch
@@ -121,6 +125,7 @@ Options:
                                  is autodetected (see also -g).
          --gcc     gcc_name    - run gcc_name instead of gcc.
          -t | --txt            - text mode output.
+         --docbook | --xml     - docbook output (xml).
          -T | --tu             - the input file is in raw gcc translation
                                  unit format (as produced by
                                    gcc -fdump-translation-unit -c ). If not
@@ -136,6 +141,37 @@ Options:
 
 }
 
+
+
+# escape a string for xml use
+# params: string to be escaped
+# return: escaped string
+sub xml_escape{
+	my $s=shift;
+	my %escapes = (
+		'"' => '"',
+		"'" => ''',
+		'&' => '&',
+		'<' => '&lt;',
+		'>' => '&gt;'
+	);
+	
+	$s=~s/(["'&<>])/$escapes{$1}/g;
+	return $s;
+}
+
+
+
+# escape a string according with the output requirements
+# params: string to be escaped
+# return: escaped string
+sub output_esc{
+	return xml_escape(shift) if defined $opt_docbook;
+	return shift;
+}
+
+
+
 # eliminate casts and expressions.
 # (always go on the first operand)
 # params: node (GCC::Node)
@@ -157,6 +193,7 @@ sub expr_op0{
 if ($#ARGV < 0 || ! GetOptions(	'help|h|?' => \$opt_help,
 								'file|f=s' => \$file,
 								'txt|t' => \$opt_txt,
+								'docbook|xml' => \$opt_docbook,
 								'tu|T' => \$opt_is_tu,
 								'source|src|s=s' => \$src_fname,
 								'defs|d=s'=>\$c_defs,
@@ -176,6 +213,16 @@ if ($#ARGV < 0 || ! GetOptions(	'help|h|?' => \$opt_help,
 do { show_patch(); exit 0; } if (defined $opt_patch);
 do { select(STDERR); help(); exit 1 } if (!defined $file);
 
+if (defined $opt_txt){
+	$output_format_header="HEADER";
+	$output_format_footer="FOOTER";
+	$output_format_varline="VARLINE2";
+}elsif (defined $opt_docbook){
+	$output_format_header="DOCBOOK_HEADER";
+	$output_format_footer="DOCBOOK_FOOTER";
+	$output_format_varline="DOCBOOK_VARLINE";
+}
+
 if (! defined $opt_is_tu){
 	# file is not a gcc translation-unit dump
 	# => we have to create one
@@ -342,17 +389,17 @@ if (@cfg_defs > 0){
 	}
 	# dump the configuration in txt mode
 	if (defined $opt_force_grp_name) {
-		$cfg_grp_name=$opt_force_grp_name;
+		$cfg_grp_name=output_esc($opt_force_grp_name);
 	}elsif (!defined $cfg_grp_name && defined $opt_grp_name) {
-		$cfg_grp_name=$opt_grp_name;
+		$cfg_grp_name=output_esc($opt_grp_name);
 	}
-	$~ = "HEADER"; write;
-	$~ = "VARLINE2" ;
+	$~ = $output_format_header; write;
+	$~ = $output_format_varline ;
 	for $l (@cfg_defs){
 		($name, $flags, $min, $max, $desc)=@{$l};
 		$type="";
 		$extra_txt="";
-		$default= ($no>0) ? $cfg_default[$i] : "";
+		$default= ($no>0) ? output_esc($cfg_default[$i]) : "";
 		
 		$i++;
 		if ($min==0 && $max==0) {
@@ -373,10 +420,13 @@ if (@cfg_defs > 0){
 		}
 		
 		$extra_txt.="Read-only." if ($flags & 128 );
-		$desc.=".";
+		$extra_txt=output_esc($extra_txt);
+		$desc=output_esc($desc . ".");
+		$name=output_esc($name);
 		# generate txt description
 		write;
 	}
+	$~ = $output_format_footer; write;
 }else{
 	die "no configuration variables found in $file\n";
 }
@@ -401,6 +451,9 @@ Configuration Variables@*
 
 .
 
+format FOOTER =
+.
+
 format VARLINE =
 @>. @<<<<<<<<<<<<<<<<<<< - ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 $i, $name,                 $desc
@@ -432,3 +485,43 @@ $i, (valid_grp_name $cfg_grp_name)?$cfg_grp_name . "." . $name : $name
         $extra_txt
 
 .
+
+format DOCBOOK_HEADER =
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- this file is autogenerated, do not edit! -->
+<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+	"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<chapter id="config_vars@*">
+(valid_grp_name $cfg_grp_name) ? "." . $cfg_grp_name : ""
+	<title> Configuration Variables@*</title>
+(valid_grp_name $cfg_grp_name) ? " for " . $cfg_grp_name : ""
+
+
+.
+
+format DOCBOOK_FOOTER =
+</chapter>
+.
+
+format DOCBOOK_VARLINE =
+<section id="@*">
+    (valid_grp_name $cfg_grp_name)?$cfg_grp_name . "." . $name : $name
+    <title>@*</title>
+    (valid_grp_name $cfg_grp_name)?$cfg_grp_name . "." . $name : $name
+    <para>
+~~      ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+        $desc
+    </para>
+~   <para>Default value: @*.</para>
+        $default
+~   <para>Range: @* - @*.</para>
+            $min, $max
+~   <para>Type: @*.</para>
+            $type
+    <para>
+~~      ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+        $extra_txt
+    </para>
+</section>
+
+.