forked from mirrors/linux
		
	kernel-doc: produce RestructuredText output
If given the -rst flag, output will now be in RestructuredText. Various glitches to be worked out yet. In the end I decided not to use RST section headings within the kerneldoc comments. gpu.tmpl already has headings five levels deep; adding more is not going to bring clarity. This is really just Jani Nikula's asciidoc change with the serial numbers filed off. It's a hack job that doubtless needs a lot of cleaning up. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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					 1 changed files with 233 additions and 0 deletions
				
			
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			@ -55,6 +55,7 @@ Output format selection (mutually exclusive):
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  -html5		Output HTML5 format.
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  -list			Output symbol list format. This is for use by docproc.
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  -man			Output troff manual page format. This is the default.
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  -rst			Output reStructuredText format.
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  -text			Output plain text format.
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Output selection (mutually exclusive):
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			@ -203,6 +204,8 @@ my $type_param = '\@(\w+)';
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my $type_struct = '\&((struct\s*)*[_\w]+)';
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my $type_struct_xml = '\\&((struct\s*)*[_\w]+)';
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my $type_env = '(\$\w+)';
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my $type_enum_full = '\&(enum)\s*([_\w]+)';
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my $type_struct_full = '\&(struct)\s*([_\w]+)';
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# Output conversion substitutions.
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#  One for each output format
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			@ -268,6 +271,17 @@ my @highlights_text = (
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		      );
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my $blankline_text = "";
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# rst-mode
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my @highlights_rst = (
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                       [$type_constant, "``\$1``"],
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                       [$type_func, "\\:c\\:func\\:`\$1`"],
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                       [$type_struct_full, "\\:ref\\:`\$1 \$2`"],
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                       [$type_enum_full, "\\:ref\\:`\$1 \$2`"],
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                       [$type_struct, "\\:ref\\:`struct \$1`"],
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                       [$type_param, "**\$1**"]
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		      );
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my $blankline_rst = "\n";
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# list mode
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my @highlights_list = (
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                       [$type_constant, "\$1"],
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			@ -404,6 +418,10 @@ while ($ARGV[0] =~ m/^-(.*)/) {
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	$output_mode = "text";
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	@highlights = @highlights_text;
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	$blankline = $blankline_text;
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    } elsif ($cmd eq "-rst") {
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	$output_mode = "rst";
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	@highlights = @highlights_rst;
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	$blankline = $blankline_rst;
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    } elsif ($cmd eq "-docbook") {
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	$output_mode = "xml";
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	@highlights = @highlights_xml;
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			@ -1704,6 +1722,209 @@ sub output_blockhead_text(%) {
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    }
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}
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##
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# output in restructured text
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#
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#
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# This could use some work; it's used to output the DOC: sections, and
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# starts by putting out the name of the doc section itself, but that tends
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# to duplicate a header already in the template file.
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#
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sub output_blockhead_rst(%) {
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    my %args = %{$_[0]};
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    my ($parameter, $section);
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    foreach $section (@{$args{'sectionlist'}}) {
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	print "**$section**\n\n";
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	output_highlight_rst($args{'sections'}{$section});
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	print "\n";
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    }
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}
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sub output_highlight_rst {
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    my $contents = join "\n",@_;
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    my $line;
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    # undo the evil effects of xml_escape() earlier
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    $contents = xml_unescape($contents);
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    eval $dohighlight;
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    die $@ if $@;
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    foreach $line (split "\n", $contents) {
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	if ($line eq "") {
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	    print $lineprefix, $blankline;
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	} else {
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	    $line =~ s/\\\\\\/\&/g;
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	    print $lineprefix, $line;
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	}
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	print "\n";
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    }
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}
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sub output_function_rst(%) {
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    my %args = %{$_[0]};
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    my ($parameter, $section);
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    my $start;
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    print ".. c:function:: ";
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    if ($args{'functiontype'} ne "") {
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	$start = $args{'functiontype'} . " " . $args{'function'} . " (";
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    } else {
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	$start = $args{'function'} . " (";
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    }
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    print $start;
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    my $count = 0;
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    foreach my $parameter (@{$args{'parameterlist'}}) {
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	if ($count ne 0) {
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	    print ", ";
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	}
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	$count++;
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	$type = $args{'parametertypes'}{$parameter};
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	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
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	    # pointer-to-function
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	    print $1 . $parameter . ") (" . $2;
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	} else {
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	    print $type . " " . $parameter;
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	}
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    }
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    print ")\n\n    " . $args{'purpose'} . "\n\n";
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    print ":Parameters:\n\n";
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    foreach $parameter (@{$args{'parameterlist'}}) {
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	my $parameter_name = $parameter;
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	#$parameter_name =~ s/\[.*//;
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	$type = $args{'parametertypes'}{$parameter};
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	if ($type ne "") {
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	    print "      ``$type $parameter``\n";
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	} else {
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	    print "      ``$parameter``\n";
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	}
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	if ($args{'parameterdescs'}{$parameter_name} ne $undescribed) {
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	    my $oldprefix = $lineprefix;
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	    $lineprefix = "        ";
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	    output_highlight_rst($args{'parameterdescs'}{$parameter_name});
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	    $lineprefix = $oldprefix;
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	} else {
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	    print "\n        _undescribed_\n";
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	}
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	print "\n";
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    }
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    output_section_rst(@_);
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}
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sub output_section_rst(%) {
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    my %args = %{$_[0]};
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    my $section;
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    my $oldprefix = $lineprefix;
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    $lineprefix = "        ";
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    foreach $section (@{$args{'sectionlist'}}) {
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	print ":$section:\n\n";
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	output_highlight_rst($args{'sections'}{$section});
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	print "\n";
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    }
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    print "\n";
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    $lineprefix = $oldprefix;
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}
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sub output_enum_rst(%) {
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    my %args = %{$_[0]};
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    my ($parameter);
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    my $count;
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    my $name = "enum " . $args{'enum'};
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    print ".. _" . $name . ":\n\n";
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    print "**$name**\n\n";
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    print "    " . $args{'purpose'} . "\n\n";
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    print "..\n\n:Constants:\n\n";
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    my $oldprefix = $lineprefix;
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    $lineprefix = "    ";
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    foreach $parameter (@{$args{'parameterlist'}}) {
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	print "  `$parameter`\n";
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	if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
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	    output_highlight_rst($args{'parameterdescs'}{$parameter});
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	} else {
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	    print "    undescribed\n";
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	}
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	print "\n";
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    }
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    $lineprefix = $oldprefix;
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    output_section_rst(@_);
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}
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sub output_typedef_rst(%) {
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    my %args = %{$_[0]};
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    my ($parameter);
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    my $count;
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    my $name = "typedef " . $args{'typedef'};
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    print "**$name**\n\n";
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    print $args{'purpose'} . "\n\n";
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    output_section_rst(@_);
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}
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sub output_struct_rst(%) {
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    my %args = %{$_[0]};
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    my ($parameter);
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    my $name = $args{'type'} . " " . $args{'struct'};
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    print ".. _" . $name . ":\n\n";
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    print "**$name**\n\n";
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    print "    " . $args{'purpose'} . "\n\n";
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    print ":Definition:\n\n";
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    print " ::\n\n";
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    print "  " . $args{'type'} . " " . $args{'struct'} . " {\n";
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    foreach $parameter (@{$args{'parameterlist'}}) {
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	if ($parameter =~ /^#/) {
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	    print "    " . "$parameter\n";
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	    next;
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	}
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	my $parameter_name = $parameter;
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	$parameter_name =~ s/\[.*//;
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	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
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	$type = $args{'parametertypes'}{$parameter};
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	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
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	    # pointer-to-function
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	    print "    $1 $parameter) ($2);\n";
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	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
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	    # bitfield
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	    print "    $1 $parameter$2;\n";
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	} else {
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	    print "    " . $type . " " . $parameter . ";\n";
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	}
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    }
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    print "  };\n\n";
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    print ":Members:\n\n";
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    foreach $parameter (@{$args{'parameterlist'}}) {
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	($parameter =~ /^#/) && next;
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	my $parameter_name = $parameter;
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	$parameter_name =~ s/\[.*//;
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	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
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	$type = $args{'parametertypes'}{$parameter};
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	print "      `$type $parameter`" . "\n";
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	my $oldprefix = $lineprefix;
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	$lineprefix = "        ";
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	output_highlight_rst($args{'parameterdescs'}{$parameter_name});
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	$lineprefix = $oldprefix;
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	print "\n";
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    }
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    print "\n";
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    output_section_rst(@_);
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}
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## list mode output functions
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sub output_function_list(%) {
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			@ -2405,6 +2626,18 @@ sub xml_escape($) {
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	return $text;
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}
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# xml_unescape: reverse the effects of xml_escape
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sub xml_unescape($) {
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	my $text = shift;
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	if (($output_mode eq "text") || ($output_mode eq "man")) {
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		return $text;
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	}
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	$text =~ s/\\\\\\amp;/\&/g;
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	$text =~ s/\\\\\\lt;/</g;
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	$text =~ s/\\\\\\gt;/>/g;
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	return $text;
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}
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# convert local escape strings to html
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# local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
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sub local_unescape($) {
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