xref: /linux/scripts/kernel-doc (revision 1f3a66889c4c80c821f3eadf899c140e91452f8e)
1#!/usr/bin/perl -w
2
3use strict;
4
5## Copyright (c) 1998 Michael Zucchi, All Rights Reserved        ##
6## Copyright (C) 2000, 1  Tim Waugh <twaugh@redhat.com>          ##
7## Copyright (C) 2001  Simon Huggins                             ##
8## Copyright (C) 2005-2009  Randy Dunlap                         ##
9## 								 ##
10## #define enhancements by Armin Kuster <akuster@mvista.com>	 ##
11## Copyright (c) 2000 MontaVista Software, Inc.			 ##
12## 								 ##
13## This software falls under the GNU General Public License.     ##
14## Please read the COPYING file for more information             ##
15
16# 18/01/2001 - 	Cleanups
17# 		Functions prototyped as foo(void) same as foo()
18# 		Stop eval'ing where we don't need to.
19# -- huggie@earth.li
20
21# 27/06/2001 -  Allowed whitespace after initial "/**" and
22#               allowed comments before function declarations.
23# -- Christian Kreibich <ck@whoop.org>
24
25# Still to do:
26# 	- add perldoc documentation
27# 	- Look more closely at some of the scarier bits :)
28
29# 26/05/2001 - 	Support for separate source and object trees.
30#		Return error code.
31# 		Keith Owens <kaos@ocs.com.au>
32
33# 23/09/2001 - Added support for typedefs, structs, enums and unions
34#              Support for Context section; can be terminated using empty line
35#              Small fixes (like spaces vs. \s in regex)
36# -- Tim Jansen <tim@tjansen.de>
37
38
39#
40# This will read a 'c' file and scan for embedded comments in the
41# style of gnome comments (+minor extensions - see below).
42#
43
44# Note: This only supports 'c'.
45
46# usage:
47# kernel-doc [ -docbook | -html | -text | -man ] [ -no-doc-sections ]
48#           [ -function funcname [ -function funcname ...] ] c file(s)s > outputfile
49# or
50#           [ -nofunction funcname [ -function funcname ...] ] c file(s)s > outputfile
51#
52#  Set output format using one of -docbook -html -text or -man.  Default is man.
53#
54#  -no-doc-sections
55#	Do not output DOC: sections
56#
57#  -function funcname
58#	If set, then only generate documentation for the given function(s) or
59#	DOC: section titles.  All other functions and DOC: sections are ignored.
60#
61#  -nofunction funcname
62#	If set, then only generate documentation for the other function(s)/DOC:
63#	sections. Cannot be used together with -function (yes, that's a bug --
64#	perl hackers can fix it 8))
65#
66#  c files - list of 'c' files to process
67#
68#  All output goes to stdout, with errors to stderr.
69
70#
71# format of comments.
72# In the following table, (...)? signifies optional structure.
73#                         (...)* signifies 0 or more structure elements
74# /**
75#  * function_name(:)? (- short description)?
76# (* @parameterx: (description of parameter x)?)*
77# (* a blank line)?
78#  * (Description:)? (Description of function)?
79#  * (section header: (section description)? )*
80#  (*)?*/
81#
82# So .. the trivial example would be:
83#
84# /**
85#  * my_function
86#  */
87#
88# If the Description: header tag is omitted, then there must be a blank line
89# after the last parameter specification.
90# e.g.
91# /**
92#  * my_function - does my stuff
93#  * @my_arg: its mine damnit
94#  *
95#  * Does my stuff explained.
96#  */
97#
98#  or, could also use:
99# /**
100#  * my_function - does my stuff
101#  * @my_arg: its mine damnit
102#  * Description: Does my stuff explained.
103#  */
104# etc.
105#
106# Besides functions you can also write documentation for structs, unions,
107# enums and typedefs. Instead of the function name you must write the name
108# of the declaration;  the struct/union/enum/typedef must always precede
109# the name. Nesting of declarations is not supported.
110# Use the argument mechanism to document members or constants.
111# e.g.
112# /**
113#  * struct my_struct - short description
114#  * @a: first member
115#  * @b: second member
116#  *
117#  * Longer description
118#  */
119# struct my_struct {
120#     int a;
121#     int b;
122# /* private: */
123#     int c;
124# };
125#
126# All descriptions can be multiline, except the short function description.
127#
128# You can also add additional sections. When documenting kernel functions you
129# should document the "Context:" of the function, e.g. whether the functions
130# can be called form interrupts. Unlike other sections you can end it with an
131# empty line.
132# Example-sections should contain the string EXAMPLE so that they are marked
133# appropriately in DocBook.
134#
135# Example:
136# /**
137#  * user_function - function that can only be called in user context
138#  * @a: some argument
139#  * Context: !in_interrupt()
140#  *
141#  * Some description
142#  * Example:
143#  *    user_function(22);
144#  */
145# ...
146#
147#
148# All descriptive text is further processed, scanning for the following special
149# patterns, which are highlighted appropriately.
150#
151# 'funcname()' - function
152# '$ENVVAR' - environmental variable
153# '&struct_name' - name of a structure (up to two words including 'struct')
154# '@parameter' - name of a parameter
155# '%CONST' - name of a constant.
156
157my $errors = 0;
158my $warnings = 0;
159my $anon_struct_union = 0;
160
161# match expressions used to find embedded type information
162my $type_constant = '\%([-_\w]+)';
163my $type_func = '(\w+)\(\)';
164my $type_param = '\@(\w+)';
165my $type_struct = '\&((struct\s*)*[_\w]+)';
166my $type_struct_xml = '\\&amp;((struct\s*)*[_\w]+)';
167my $type_env = '(\$\w+)';
168
169# Output conversion substitutions.
170#  One for each output format
171
172# these work fairly well
173my %highlights_html = ( $type_constant, "<i>\$1</i>",
174			$type_func, "<b>\$1</b>",
175			$type_struct_xml, "<i>\$1</i>",
176			$type_env, "<b><i>\$1</i></b>",
177			$type_param, "<tt><b>\$1</b></tt>" );
178my $local_lt = "\\\\\\\\lt:";
179my $local_gt = "\\\\\\\\gt:";
180my $blankline_html = $local_lt . "p" . $local_gt;	# was "<p>"
181
182# XML, docbook format
183my %highlights_xml = ( "([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>",
184			$type_constant, "<constant>\$1</constant>",
185			$type_func, "<function>\$1</function>",
186			$type_struct_xml, "<structname>\$1</structname>",
187			$type_env, "<envar>\$1</envar>",
188			$type_param, "<parameter>\$1</parameter>" );
189my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n";
190
191# gnome, docbook format
192my %highlights_gnome = ( $type_constant, "<replaceable class=\"option\">\$1</replaceable>",
193			 $type_func, "<function>\$1</function>",
194			 $type_struct, "<structname>\$1</structname>",
195			 $type_env, "<envar>\$1</envar>",
196			 $type_param, "<parameter>\$1</parameter>" );
197my $blankline_gnome = "</para><para>\n";
198
199# these are pretty rough
200my %highlights_man = ( $type_constant, "\$1",
201		       $type_func, "\\\\fB\$1\\\\fP",
202		       $type_struct, "\\\\fI\$1\\\\fP",
203		       $type_param, "\\\\fI\$1\\\\fP" );
204my $blankline_man = "";
205
206# text-mode
207my %highlights_text = ( $type_constant, "\$1",
208			$type_func, "\$1",
209			$type_struct, "\$1",
210			$type_param, "\$1" );
211my $blankline_text = "";
212
213
214sub usage {
215    print "Usage: $0 [ -v ] [ -docbook | -html | -text | -man ] [ -no-doc-sections ]\n";
216    print "         [ -function funcname [ -function funcname ...] ]\n";
217    print "         [ -nofunction funcname [ -nofunction funcname ...] ]\n";
218    print "         c source file(s) > outputfile\n";
219    print "         -v : verbose output, more warnings & other info listed\n";
220    exit 1;
221}
222
223# read arguments
224if ($#ARGV == -1) {
225    usage();
226}
227
228my $verbose = 0;
229my $output_mode = "man";
230my $no_doc_sections = 0;
231my %highlights = %highlights_man;
232my $blankline = $blankline_man;
233my $modulename = "Kernel API";
234my $function_only = 0;
235my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
236		'July', 'August', 'September', 'October',
237		'November', 'December')[(localtime)[4]] .
238  " " . ((localtime)[5]+1900);
239
240# Essentially these are globals
241# They probably want to be tidied up, made more localised or something.
242# CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
243# could cause "use of undefined value" or other bugs.
244my ($function, %function_table, %parametertypes, $declaration_purpose);
245my ($type, $declaration_name, $return_type);
246my ($newsection, $newcontents, $prototype, $brcount, %source_map);
247
248if (defined($ENV{'KBUILD_VERBOSE'})) {
249	$verbose = "$ENV{'KBUILD_VERBOSE'}";
250}
251
252# Generated docbook code is inserted in a template at a point where
253# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
254# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
255# We keep track of number of generated entries and generate a dummy
256# if needs be to ensure the expanded template can be postprocessed
257# into html.
258my $section_counter = 0;
259
260my $lineprefix="";
261
262# states
263# 0 - normal code
264# 1 - looking for function name
265# 2 - scanning field start.
266# 3 - scanning prototype.
267# 4 - documentation block
268my $state;
269my $in_doc_sect;
270
271#declaration types: can be
272# 'function', 'struct', 'union', 'enum', 'typedef'
273my $decl_type;
274
275my $doc_special = "\@\%\$\&";
276
277my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
278my $doc_end = '\*/';
279my $doc_com = '\s*\*\s*';
280my $doc_decl = $doc_com . '(\w+)';
281my $doc_sect = $doc_com . '([' . $doc_special . ']?[\w\s]+):(.*)';
282my $doc_content = $doc_com . '(.*)';
283my $doc_block = $doc_com . 'DOC:\s*(.*)?';
284
285my %constants;
286my %parameterdescs;
287my @parameterlist;
288my %sections;
289my @sectionlist;
290my $sectcheck;
291my $struct_actual;
292
293my $contents = "";
294my $section_default = "Description";	# default section
295my $section_intro = "Introduction";
296my $section = $section_default;
297my $section_context = "Context";
298
299my $undescribed = "-- undescribed --";
300
301reset_state();
302
303while ($ARGV[0] =~ m/^-(.*)/) {
304    my $cmd = shift @ARGV;
305    if ($cmd eq "-html") {
306	$output_mode = "html";
307	%highlights = %highlights_html;
308	$blankline = $blankline_html;
309    } elsif ($cmd eq "-man") {
310	$output_mode = "man";
311	%highlights = %highlights_man;
312	$blankline = $blankline_man;
313    } elsif ($cmd eq "-text") {
314	$output_mode = "text";
315	%highlights = %highlights_text;
316	$blankline = $blankline_text;
317    } elsif ($cmd eq "-docbook") {
318	$output_mode = "xml";
319	%highlights = %highlights_xml;
320	$blankline = $blankline_xml;
321    } elsif ($cmd eq "-gnome") {
322	$output_mode = "gnome";
323	%highlights = %highlights_gnome;
324	$blankline = $blankline_gnome;
325    } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
326	$modulename = shift @ARGV;
327    } elsif ($cmd eq "-function") { # to only output specific functions
328	$function_only = 1;
329	$function = shift @ARGV;
330	$function_table{$function} = 1;
331    } elsif ($cmd eq "-nofunction") { # to only output specific functions
332	$function_only = 2;
333	$function = shift @ARGV;
334	$function_table{$function} = 1;
335    } elsif ($cmd eq "-v") {
336	$verbose = 1;
337    } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
338	usage();
339    } elsif ($cmd eq '-no-doc-sections') {
340	    $no_doc_sections = 1;
341    }
342}
343
344# get kernel version from env
345sub get_kernel_version() {
346    my $version = 'unknown kernel version';
347
348    if (defined($ENV{'KERNELVERSION'})) {
349	$version = $ENV{'KERNELVERSION'};
350    }
351    return $version;
352}
353my $kernelversion = get_kernel_version();
354
355# generate a sequence of code that will splice in highlighting information
356# using the s// operator.
357my $dohighlight = "";
358foreach my $pattern (keys %highlights) {
359#   print STDERR "scanning pattern:$pattern, highlight:($highlights{$pattern})\n";
360    $dohighlight .=  "\$contents =~ s:$pattern:$highlights{$pattern}:gs;\n";
361}
362
363##
364# dumps section contents to arrays/hashes intended for that purpose.
365#
366sub dump_section {
367    my $file = shift;
368    my $name = shift;
369    my $contents = join "\n", @_;
370
371    if ($name =~ m/$type_constant/) {
372	$name = $1;
373#	print STDERR "constant section '$1' = '$contents'\n";
374	$constants{$name} = $contents;
375    } elsif ($name =~ m/$type_param/) {
376#	print STDERR "parameter def '$1' = '$contents'\n";
377	$name = $1;
378	$parameterdescs{$name} = $contents;
379	$sectcheck = $sectcheck . $name . " ";
380    } elsif ($name eq "@\.\.\.") {
381#	print STDERR "parameter def '...' = '$contents'\n";
382	$name = "...";
383	$parameterdescs{$name} = $contents;
384	$sectcheck = $sectcheck . $name . " ";
385    } else {
386#	print STDERR "other section '$name' = '$contents'\n";
387	if (defined($sections{$name}) && ($sections{$name} ne "")) {
388		print STDERR "Error(${file}:$.): duplicate section name '$name'\n";
389		++$errors;
390	}
391	$sections{$name} = $contents;
392	push @sectionlist, $name;
393    }
394}
395
396##
397# dump DOC: section after checking that it should go out
398#
399sub dump_doc_section {
400    my $file = shift;
401    my $name = shift;
402    my $contents = join "\n", @_;
403
404    if ($no_doc_sections) {
405        return;
406    }
407
408    if (($function_only == 0) ||
409	( $function_only == 1 && defined($function_table{$name})) ||
410	( $function_only == 2 && !defined($function_table{$name})))
411    {
412	dump_section($file, $name, $contents);
413	output_blockhead({'sectionlist' => \@sectionlist,
414			  'sections' => \%sections,
415			  'module' => $modulename,
416			  'content-only' => ($function_only != 0), });
417    }
418}
419
420##
421# output function
422#
423# parameterdescs, a hash.
424#  function => "function name"
425#  parameterlist => @list of parameters
426#  parameterdescs => %parameter descriptions
427#  sectionlist => @list of sections
428#  sections => %section descriptions
429#
430
431sub output_highlight {
432    my $contents = join "\n",@_;
433    my $line;
434
435#   DEBUG
436#   if (!defined $contents) {
437#	use Carp;
438#	confess "output_highlight got called with no args?\n";
439#   }
440
441    if ($output_mode eq "html" || $output_mode eq "xml") {
442	$contents = local_unescape($contents);
443	# convert data read & converted thru xml_escape() into &xyz; format:
444	$contents =~ s/\\\\\\/&/g;
445    }
446#   print STDERR "contents b4:$contents\n";
447    eval $dohighlight;
448    die $@ if $@;
449#   print STDERR "contents af:$contents\n";
450
451    foreach $line (split "\n", $contents) {
452	if ($line eq ""){
453	    print $lineprefix, local_unescape($blankline);
454	} else {
455	    $line =~ s/\\\\\\/\&/g;
456	    if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
457		print "\\&$line";
458	    } else {
459		print $lineprefix, $line;
460	    }
461	}
462	print "\n";
463    }
464}
465
466#output sections in html
467sub output_section_html(%) {
468    my %args = %{$_[0]};
469    my $section;
470
471    foreach $section (@{$args{'sectionlist'}}) {
472	print "<h3>$section</h3>\n";
473	print "<blockquote>\n";
474	output_highlight($args{'sections'}{$section});
475	print "</blockquote>\n";
476    }
477}
478
479# output enum in html
480sub output_enum_html(%) {
481    my %args = %{$_[0]};
482    my ($parameter);
483    my $count;
484    print "<h2>enum " . $args{'enum'} . "</h2>\n";
485
486    print "<b>enum " . $args{'enum'} . "</b> {<br>\n";
487    $count = 0;
488    foreach $parameter (@{$args{'parameterlist'}}) {
489	print " <b>" . $parameter . "</b>";
490	if ($count != $#{$args{'parameterlist'}}) {
491	    $count++;
492	    print ",\n";
493	}
494	print "<br>";
495    }
496    print "};<br>\n";
497
498    print "<h3>Constants</h3>\n";
499    print "<dl>\n";
500    foreach $parameter (@{$args{'parameterlist'}}) {
501	print "<dt><b>" . $parameter . "</b>\n";
502	print "<dd>";
503	output_highlight($args{'parameterdescs'}{$parameter});
504    }
505    print "</dl>\n";
506    output_section_html(@_);
507    print "<hr>\n";
508}
509
510# output typedef in html
511sub output_typedef_html(%) {
512    my %args = %{$_[0]};
513    my ($parameter);
514    my $count;
515    print "<h2>typedef " . $args{'typedef'} . "</h2>\n";
516
517    print "<b>typedef " . $args{'typedef'} . "</b>\n";
518    output_section_html(@_);
519    print "<hr>\n";
520}
521
522# output struct in html
523sub output_struct_html(%) {
524    my %args = %{$_[0]};
525    my ($parameter);
526
527    print "<h2>" . $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "</h2>\n";
528    print "<b>" . $args{'type'} . " " . $args{'struct'} . "</b> {<br>\n";
529    foreach $parameter (@{$args{'parameterlist'}}) {
530	if ($parameter =~ /^#/) {
531		print "$parameter<br>\n";
532		next;
533	}
534	my $parameter_name = $parameter;
535	$parameter_name =~ s/\[.*//;
536
537	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
538	$type = $args{'parametertypes'}{$parameter};
539	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
540	    # pointer-to-function
541	    print "&nbsp; &nbsp; <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
542	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
543	    # bitfield
544	    print "&nbsp; &nbsp; <i>$1</i> <b>$parameter</b>$2;<br>\n";
545	} else {
546	    print "&nbsp; &nbsp; <i>$type</i> <b>$parameter</b>;<br>\n";
547	}
548    }
549    print "};<br>\n";
550
551    print "<h3>Members</h3>\n";
552    print "<dl>\n";
553    foreach $parameter (@{$args{'parameterlist'}}) {
554	($parameter =~ /^#/) && next;
555
556	my $parameter_name = $parameter;
557	$parameter_name =~ s/\[.*//;
558
559	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
560	print "<dt><b>" . $parameter . "</b>\n";
561	print "<dd>";
562	output_highlight($args{'parameterdescs'}{$parameter_name});
563    }
564    print "</dl>\n";
565    output_section_html(@_);
566    print "<hr>\n";
567}
568
569# output function in html
570sub output_function_html(%) {
571    my %args = %{$_[0]};
572    my ($parameter, $section);
573    my $count;
574
575    print "<h2>" . $args{'function'} . " - " . $args{'purpose'} . "</h2>\n";
576    print "<i>" . $args{'functiontype'} . "</i>\n";
577    print "<b>" . $args{'function'} . "</b>\n";
578    print "(";
579    $count = 0;
580    foreach $parameter (@{$args{'parameterlist'}}) {
581	$type = $args{'parametertypes'}{$parameter};
582	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
583	    # pointer-to-function
584	    print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
585	} else {
586	    print "<i>" . $type . "</i> <b>" . $parameter . "</b>";
587	}
588	if ($count != $#{$args{'parameterlist'}}) {
589	    $count++;
590	    print ",\n";
591	}
592    }
593    print ")\n";
594
595    print "<h3>Arguments</h3>\n";
596    print "<dl>\n";
597    foreach $parameter (@{$args{'parameterlist'}}) {
598	my $parameter_name = $parameter;
599	$parameter_name =~ s/\[.*//;
600
601	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
602	print "<dt><b>" . $parameter . "</b>\n";
603	print "<dd>";
604	output_highlight($args{'parameterdescs'}{$parameter_name});
605    }
606    print "</dl>\n";
607    output_section_html(@_);
608    print "<hr>\n";
609}
610
611# output DOC: block header in html
612sub output_blockhead_html(%) {
613    my %args = %{$_[0]};
614    my ($parameter, $section);
615    my $count;
616
617    foreach $section (@{$args{'sectionlist'}}) {
618	print "<h3>$section</h3>\n";
619	print "<ul>\n";
620	output_highlight($args{'sections'}{$section});
621	print "</ul>\n";
622    }
623    print "<hr>\n";
624}
625
626sub output_section_xml(%) {
627    my %args = %{$_[0]};
628    my $section;
629    # print out each section
630    $lineprefix="   ";
631    foreach $section (@{$args{'sectionlist'}}) {
632	print "<refsect1>\n";
633	print "<title>$section</title>\n";
634	if ($section =~ m/EXAMPLE/i) {
635	    print "<informalexample><programlisting>\n";
636	} else {
637	    print "<para>\n";
638	}
639	output_highlight($args{'sections'}{$section});
640	if ($section =~ m/EXAMPLE/i) {
641	    print "</programlisting></informalexample>\n";
642	} else {
643	    print "</para>\n";
644	}
645	print "</refsect1>\n";
646    }
647}
648
649# output function in XML DocBook
650sub output_function_xml(%) {
651    my %args = %{$_[0]};
652    my ($parameter, $section);
653    my $count;
654    my $id;
655
656    $id = "API-" . $args{'function'};
657    $id =~ s/[^A-Za-z0-9]/-/g;
658
659    print "<refentry id=\"$id\">\n";
660    print "<refentryinfo>\n";
661    print " <title>LINUX</title>\n";
662    print " <productname>Kernel Hackers Manual</productname>\n";
663    print " <date>$man_date</date>\n";
664    print "</refentryinfo>\n";
665    print "<refmeta>\n";
666    print " <refentrytitle><phrase>" . $args{'function'} . "</phrase></refentrytitle>\n";
667    print " <manvolnum>9</manvolnum>\n";
668    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
669    print "</refmeta>\n";
670    print "<refnamediv>\n";
671    print " <refname>" . $args{'function'} . "</refname>\n";
672    print " <refpurpose>\n";
673    print "  ";
674    output_highlight ($args{'purpose'});
675    print " </refpurpose>\n";
676    print "</refnamediv>\n";
677
678    print "<refsynopsisdiv>\n";
679    print " <title>Synopsis</title>\n";
680    print "  <funcsynopsis><funcprototype>\n";
681    print "   <funcdef>" . $args{'functiontype'} . " ";
682    print "<function>" . $args{'function'} . " </function></funcdef>\n";
683
684    $count = 0;
685    if ($#{$args{'parameterlist'}} >= 0) {
686	foreach $parameter (@{$args{'parameterlist'}}) {
687	    $type = $args{'parametertypes'}{$parameter};
688	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
689		# pointer-to-function
690		print "   <paramdef>$1<parameter>$parameter</parameter>)\n";
691		print "     <funcparams>$2</funcparams></paramdef>\n";
692	    } else {
693		print "   <paramdef>" . $type;
694		print " <parameter>$parameter</parameter></paramdef>\n";
695	    }
696	}
697    } else {
698	print "  <void/>\n";
699    }
700    print "  </funcprototype></funcsynopsis>\n";
701    print "</refsynopsisdiv>\n";
702
703    # print parameters
704    print "<refsect1>\n <title>Arguments</title>\n";
705    if ($#{$args{'parameterlist'}} >= 0) {
706	print " <variablelist>\n";
707	foreach $parameter (@{$args{'parameterlist'}}) {
708	    my $parameter_name = $parameter;
709	    $parameter_name =~ s/\[.*//;
710
711	    print "  <varlistentry>\n   <term><parameter>$parameter</parameter></term>\n";
712	    print "   <listitem>\n    <para>\n";
713	    $lineprefix="     ";
714	    output_highlight($args{'parameterdescs'}{$parameter_name});
715	    print "    </para>\n   </listitem>\n  </varlistentry>\n";
716	}
717	print " </variablelist>\n";
718    } else {
719	print " <para>\n  None\n </para>\n";
720    }
721    print "</refsect1>\n";
722
723    output_section_xml(@_);
724    print "</refentry>\n\n";
725}
726
727# output struct in XML DocBook
728sub output_struct_xml(%) {
729    my %args = %{$_[0]};
730    my ($parameter, $section);
731    my $id;
732
733    $id = "API-struct-" . $args{'struct'};
734    $id =~ s/[^A-Za-z0-9]/-/g;
735
736    print "<refentry id=\"$id\">\n";
737    print "<refentryinfo>\n";
738    print " <title>LINUX</title>\n";
739    print " <productname>Kernel Hackers Manual</productname>\n";
740    print " <date>$man_date</date>\n";
741    print "</refentryinfo>\n";
742    print "<refmeta>\n";
743    print " <refentrytitle><phrase>" . $args{'type'} . " " . $args{'struct'} . "</phrase></refentrytitle>\n";
744    print " <manvolnum>9</manvolnum>\n";
745    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
746    print "</refmeta>\n";
747    print "<refnamediv>\n";
748    print " <refname>" . $args{'type'} . " " . $args{'struct'} . "</refname>\n";
749    print " <refpurpose>\n";
750    print "  ";
751    output_highlight ($args{'purpose'});
752    print " </refpurpose>\n";
753    print "</refnamediv>\n";
754
755    print "<refsynopsisdiv>\n";
756    print " <title>Synopsis</title>\n";
757    print "  <programlisting>\n";
758    print $args{'type'} . " " . $args{'struct'} . " {\n";
759    foreach $parameter (@{$args{'parameterlist'}}) {
760	if ($parameter =~ /^#/) {
761	    print "$parameter\n";
762	    next;
763	}
764
765	my $parameter_name = $parameter;
766	$parameter_name =~ s/\[.*//;
767
768	defined($args{'parameterdescs'}{$parameter_name}) || next;
769	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
770	$type = $args{'parametertypes'}{$parameter};
771	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
772	    # pointer-to-function
773	    print "  $1 $parameter) ($2);\n";
774	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
775	    # bitfield
776	    print "  $1 $parameter$2;\n";
777	} else {
778	    print "  " . $type . " " . $parameter . ";\n";
779	}
780    }
781    print "};";
782    print "  </programlisting>\n";
783    print "</refsynopsisdiv>\n";
784
785    print " <refsect1>\n";
786    print "  <title>Members</title>\n";
787
788    if ($#{$args{'parameterlist'}} >= 0) {
789    print "  <variablelist>\n";
790    foreach $parameter (@{$args{'parameterlist'}}) {
791      ($parameter =~ /^#/) && next;
792
793      my $parameter_name = $parameter;
794      $parameter_name =~ s/\[.*//;
795
796      defined($args{'parameterdescs'}{$parameter_name}) || next;
797      ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
798      print "    <varlistentry>";
799      print "      <term>$parameter</term>\n";
800      print "      <listitem><para>\n";
801      output_highlight($args{'parameterdescs'}{$parameter_name});
802      print "      </para></listitem>\n";
803      print "    </varlistentry>\n";
804    }
805    print "  </variablelist>\n";
806    } else {
807	print " <para>\n  None\n </para>\n";
808    }
809    print " </refsect1>\n";
810
811    output_section_xml(@_);
812
813    print "</refentry>\n\n";
814}
815
816# output enum in XML DocBook
817sub output_enum_xml(%) {
818    my %args = %{$_[0]};
819    my ($parameter, $section);
820    my $count;
821    my $id;
822
823    $id = "API-enum-" . $args{'enum'};
824    $id =~ s/[^A-Za-z0-9]/-/g;
825
826    print "<refentry id=\"$id\">\n";
827    print "<refentryinfo>\n";
828    print " <title>LINUX</title>\n";
829    print " <productname>Kernel Hackers Manual</productname>\n";
830    print " <date>$man_date</date>\n";
831    print "</refentryinfo>\n";
832    print "<refmeta>\n";
833    print " <refentrytitle><phrase>enum " . $args{'enum'} . "</phrase></refentrytitle>\n";
834    print " <manvolnum>9</manvolnum>\n";
835    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
836    print "</refmeta>\n";
837    print "<refnamediv>\n";
838    print " <refname>enum " . $args{'enum'} . "</refname>\n";
839    print " <refpurpose>\n";
840    print "  ";
841    output_highlight ($args{'purpose'});
842    print " </refpurpose>\n";
843    print "</refnamediv>\n";
844
845    print "<refsynopsisdiv>\n";
846    print " <title>Synopsis</title>\n";
847    print "  <programlisting>\n";
848    print "enum " . $args{'enum'} . " {\n";
849    $count = 0;
850    foreach $parameter (@{$args{'parameterlist'}}) {
851	print "  $parameter";
852	if ($count != $#{$args{'parameterlist'}}) {
853	    $count++;
854	    print ",";
855	}
856	print "\n";
857    }
858    print "};";
859    print "  </programlisting>\n";
860    print "</refsynopsisdiv>\n";
861
862    print "<refsect1>\n";
863    print " <title>Constants</title>\n";
864    print "  <variablelist>\n";
865    foreach $parameter (@{$args{'parameterlist'}}) {
866      my $parameter_name = $parameter;
867      $parameter_name =~ s/\[.*//;
868
869      print "    <varlistentry>";
870      print "      <term>$parameter</term>\n";
871      print "      <listitem><para>\n";
872      output_highlight($args{'parameterdescs'}{$parameter_name});
873      print "      </para></listitem>\n";
874      print "    </varlistentry>\n";
875    }
876    print "  </variablelist>\n";
877    print "</refsect1>\n";
878
879    output_section_xml(@_);
880
881    print "</refentry>\n\n";
882}
883
884# output typedef in XML DocBook
885sub output_typedef_xml(%) {
886    my %args = %{$_[0]};
887    my ($parameter, $section);
888    my $id;
889
890    $id = "API-typedef-" . $args{'typedef'};
891    $id =~ s/[^A-Za-z0-9]/-/g;
892
893    print "<refentry id=\"$id\">\n";
894    print "<refentryinfo>\n";
895    print " <title>LINUX</title>\n";
896    print " <productname>Kernel Hackers Manual</productname>\n";
897    print " <date>$man_date</date>\n";
898    print "</refentryinfo>\n";
899    print "<refmeta>\n";
900    print " <refentrytitle><phrase>typedef " . $args{'typedef'} . "</phrase></refentrytitle>\n";
901    print " <manvolnum>9</manvolnum>\n";
902    print "</refmeta>\n";
903    print "<refnamediv>\n";
904    print " <refname>typedef " . $args{'typedef'} . "</refname>\n";
905    print " <refpurpose>\n";
906    print "  ";
907    output_highlight ($args{'purpose'});
908    print " </refpurpose>\n";
909    print "</refnamediv>\n";
910
911    print "<refsynopsisdiv>\n";
912    print " <title>Synopsis</title>\n";
913    print "  <synopsis>typedef " . $args{'typedef'} . ";</synopsis>\n";
914    print "</refsynopsisdiv>\n";
915
916    output_section_xml(@_);
917
918    print "</refentry>\n\n";
919}
920
921# output in XML DocBook
922sub output_blockhead_xml(%) {
923    my %args = %{$_[0]};
924    my ($parameter, $section);
925    my $count;
926
927    my $id = $args{'module'};
928    $id =~ s/[^A-Za-z0-9]/-/g;
929
930    # print out each section
931    $lineprefix="   ";
932    foreach $section (@{$args{'sectionlist'}}) {
933	if (!$args{'content-only'}) {
934		print "<refsect1>\n <title>$section</title>\n";
935	}
936	if ($section =~ m/EXAMPLE/i) {
937	    print "<example><para>\n";
938	} else {
939	    print "<para>\n";
940	}
941	output_highlight($args{'sections'}{$section});
942	if ($section =~ m/EXAMPLE/i) {
943	    print "</para></example>\n";
944	} else {
945	    print "</para>";
946	}
947	if (!$args{'content-only'}) {
948		print "\n</refsect1>\n";
949	}
950    }
951
952    print "\n\n";
953}
954
955# output in XML DocBook
956sub output_function_gnome {
957    my %args = %{$_[0]};
958    my ($parameter, $section);
959    my $count;
960    my $id;
961
962    $id = $args{'module'} . "-" . $args{'function'};
963    $id =~ s/[^A-Za-z0-9]/-/g;
964
965    print "<sect2>\n";
966    print " <title id=\"$id\">" . $args{'function'} . "</title>\n";
967
968    print "  <funcsynopsis>\n";
969    print "   <funcdef>" . $args{'functiontype'} . " ";
970    print "<function>" . $args{'function'} . " ";
971    print "</function></funcdef>\n";
972
973    $count = 0;
974    if ($#{$args{'parameterlist'}} >= 0) {
975	foreach $parameter (@{$args{'parameterlist'}}) {
976	    $type = $args{'parametertypes'}{$parameter};
977	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
978		# pointer-to-function
979		print "   <paramdef>$1 <parameter>$parameter</parameter>)\n";
980		print "     <funcparams>$2</funcparams></paramdef>\n";
981	    } else {
982		print "   <paramdef>" . $type;
983		print " <parameter>$parameter</parameter></paramdef>\n";
984	    }
985	}
986    } else {
987	print "  <void>\n";
988    }
989    print "  </funcsynopsis>\n";
990    if ($#{$args{'parameterlist'}} >= 0) {
991	print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
992	print "<tgroup cols=\"2\">\n";
993	print "<colspec colwidth=\"2*\">\n";
994	print "<colspec colwidth=\"8*\">\n";
995	print "<tbody>\n";
996	foreach $parameter (@{$args{'parameterlist'}}) {
997	    my $parameter_name = $parameter;
998	    $parameter_name =~ s/\[.*//;
999
1000	    print "  <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
1001	    print "   <entry>\n";
1002	    $lineprefix="     ";
1003	    output_highlight($args{'parameterdescs'}{$parameter_name});
1004	    print "    </entry></row>\n";
1005	}
1006	print " </tbody></tgroup></informaltable>\n";
1007    } else {
1008	print " <para>\n  None\n </para>\n";
1009    }
1010
1011    # print out each section
1012    $lineprefix="   ";
1013    foreach $section (@{$args{'sectionlist'}}) {
1014	print "<simplesect>\n <title>$section</title>\n";
1015	if ($section =~ m/EXAMPLE/i) {
1016	    print "<example><programlisting>\n";
1017	} else {
1018	}
1019	print "<para>\n";
1020	output_highlight($args{'sections'}{$section});
1021	print "</para>\n";
1022	if ($section =~ m/EXAMPLE/i) {
1023	    print "</programlisting></example>\n";
1024	} else {
1025	}
1026	print " </simplesect>\n";
1027    }
1028
1029    print "</sect2>\n\n";
1030}
1031
1032##
1033# output function in man
1034sub output_function_man(%) {
1035    my %args = %{$_[0]};
1036    my ($parameter, $section);
1037    my $count;
1038
1039    print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
1040
1041    print ".SH NAME\n";
1042    print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
1043
1044    print ".SH SYNOPSIS\n";
1045    if ($args{'functiontype'} ne "") {
1046	print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
1047    } else {
1048	print ".B \"" . $args{'function'} . "\n";
1049    }
1050    $count = 0;
1051    my $parenth = "(";
1052    my $post = ",";
1053    foreach my $parameter (@{$args{'parameterlist'}}) {
1054	if ($count == $#{$args{'parameterlist'}}) {
1055	    $post = ");";
1056	}
1057	$type = $args{'parametertypes'}{$parameter};
1058	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1059	    # pointer-to-function
1060	    print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
1061	} else {
1062	    $type =~ s/([^\*])$/$1 /;
1063	    print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
1064	}
1065	$count++;
1066	$parenth = "";
1067    }
1068
1069    print ".SH ARGUMENTS\n";
1070    foreach $parameter (@{$args{'parameterlist'}}) {
1071	my $parameter_name = $parameter;
1072	$parameter_name =~ s/\[.*//;
1073
1074	print ".IP \"" . $parameter . "\" 12\n";
1075	output_highlight($args{'parameterdescs'}{$parameter_name});
1076    }
1077    foreach $section (@{$args{'sectionlist'}}) {
1078	print ".SH \"", uc $section, "\"\n";
1079	output_highlight($args{'sections'}{$section});
1080    }
1081}
1082
1083##
1084# output enum in man
1085sub output_enum_man(%) {
1086    my %args = %{$_[0]};
1087    my ($parameter, $section);
1088    my $count;
1089
1090    print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
1091
1092    print ".SH NAME\n";
1093    print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
1094
1095    print ".SH SYNOPSIS\n";
1096    print "enum " . $args{'enum'} . " {\n";
1097    $count = 0;
1098    foreach my $parameter (@{$args{'parameterlist'}}) {
1099	print ".br\n.BI \"    $parameter\"\n";
1100	if ($count == $#{$args{'parameterlist'}}) {
1101	    print "\n};\n";
1102	    last;
1103	}
1104	else {
1105	    print ", \n.br\n";
1106	}
1107	$count++;
1108    }
1109
1110    print ".SH Constants\n";
1111    foreach $parameter (@{$args{'parameterlist'}}) {
1112	my $parameter_name = $parameter;
1113	$parameter_name =~ s/\[.*//;
1114
1115	print ".IP \"" . $parameter . "\" 12\n";
1116	output_highlight($args{'parameterdescs'}{$parameter_name});
1117    }
1118    foreach $section (@{$args{'sectionlist'}}) {
1119	print ".SH \"$section\"\n";
1120	output_highlight($args{'sections'}{$section});
1121    }
1122}
1123
1124##
1125# output struct in man
1126sub output_struct_man(%) {
1127    my %args = %{$_[0]};
1128    my ($parameter, $section);
1129
1130    print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
1131
1132    print ".SH NAME\n";
1133    print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
1134
1135    print ".SH SYNOPSIS\n";
1136    print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
1137
1138    foreach my $parameter (@{$args{'parameterlist'}}) {
1139	if ($parameter =~ /^#/) {
1140	    print ".BI \"$parameter\"\n.br\n";
1141	    next;
1142	}
1143	my $parameter_name = $parameter;
1144	$parameter_name =~ s/\[.*//;
1145
1146	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1147	$type = $args{'parametertypes'}{$parameter};
1148	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1149	    # pointer-to-function
1150	    print ".BI \"    " . $1 . "\" " . $parameter . " \") (" . $2 . ")" . "\"\n;\n";
1151	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1152	    # bitfield
1153	    print ".BI \"    " . $1 . "\ \" " . $parameter . $2 . " \"" . "\"\n;\n";
1154	} else {
1155	    $type =~ s/([^\*])$/$1 /;
1156	    print ".BI \"    " . $type . "\" " . $parameter . " \"" . "\"\n;\n";
1157	}
1158	print "\n.br\n";
1159    }
1160    print "};\n.br\n";
1161
1162    print ".SH Members\n";
1163    foreach $parameter (@{$args{'parameterlist'}}) {
1164	($parameter =~ /^#/) && next;
1165
1166	my $parameter_name = $parameter;
1167	$parameter_name =~ s/\[.*//;
1168
1169	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1170	print ".IP \"" . $parameter . "\" 12\n";
1171	output_highlight($args{'parameterdescs'}{$parameter_name});
1172    }
1173    foreach $section (@{$args{'sectionlist'}}) {
1174	print ".SH \"$section\"\n";
1175	output_highlight($args{'sections'}{$section});
1176    }
1177}
1178
1179##
1180# output typedef in man
1181sub output_typedef_man(%) {
1182    my %args = %{$_[0]};
1183    my ($parameter, $section);
1184
1185    print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
1186
1187    print ".SH NAME\n";
1188    print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
1189
1190    foreach $section (@{$args{'sectionlist'}}) {
1191	print ".SH \"$section\"\n";
1192	output_highlight($args{'sections'}{$section});
1193    }
1194}
1195
1196sub output_blockhead_man(%) {
1197    my %args = %{$_[0]};
1198    my ($parameter, $section);
1199    my $count;
1200
1201    print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
1202
1203    foreach $section (@{$args{'sectionlist'}}) {
1204	print ".SH \"$section\"\n";
1205	output_highlight($args{'sections'}{$section});
1206    }
1207}
1208
1209##
1210# output in text
1211sub output_function_text(%) {
1212    my %args = %{$_[0]};
1213    my ($parameter, $section);
1214    my $start;
1215
1216    print "Name:\n\n";
1217    print $args{'function'} . " - " . $args{'purpose'} . "\n";
1218
1219    print "\nSynopsis:\n\n";
1220    if ($args{'functiontype'} ne "") {
1221	$start = $args{'functiontype'} . " " . $args{'function'} . " (";
1222    } else {
1223	$start = $args{'function'} . " (";
1224    }
1225    print $start;
1226
1227    my $count = 0;
1228    foreach my $parameter (@{$args{'parameterlist'}}) {
1229	$type = $args{'parametertypes'}{$parameter};
1230	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1231	    # pointer-to-function
1232	    print $1 . $parameter . ") (" . $2;
1233	} else {
1234	    print $type . " " . $parameter;
1235	}
1236	if ($count != $#{$args{'parameterlist'}}) {
1237	    $count++;
1238	    print ",\n";
1239	    print " " x length($start);
1240	} else {
1241	    print ");\n\n";
1242	}
1243    }
1244
1245    print "Arguments:\n\n";
1246    foreach $parameter (@{$args{'parameterlist'}}) {
1247	my $parameter_name = $parameter;
1248	$parameter_name =~ s/\[.*//;
1249
1250	print $parameter . "\n\t" . $args{'parameterdescs'}{$parameter_name} . "\n";
1251    }
1252    output_section_text(@_);
1253}
1254
1255#output sections in text
1256sub output_section_text(%) {
1257    my %args = %{$_[0]};
1258    my $section;
1259
1260    print "\n";
1261    foreach $section (@{$args{'sectionlist'}}) {
1262	print "$section:\n\n";
1263	output_highlight($args{'sections'}{$section});
1264    }
1265    print "\n\n";
1266}
1267
1268# output enum in text
1269sub output_enum_text(%) {
1270    my %args = %{$_[0]};
1271    my ($parameter);
1272    my $count;
1273    print "Enum:\n\n";
1274
1275    print "enum " . $args{'enum'} . " - " . $args{'purpose'} . "\n\n";
1276    print "enum " . $args{'enum'} . " {\n";
1277    $count = 0;
1278    foreach $parameter (@{$args{'parameterlist'}}) {
1279	print "\t$parameter";
1280	if ($count != $#{$args{'parameterlist'}}) {
1281	    $count++;
1282	    print ",";
1283	}
1284	print "\n";
1285    }
1286    print "};\n\n";
1287
1288    print "Constants:\n\n";
1289    foreach $parameter (@{$args{'parameterlist'}}) {
1290	print "$parameter\n\t";
1291	print $args{'parameterdescs'}{$parameter} . "\n";
1292    }
1293
1294    output_section_text(@_);
1295}
1296
1297# output typedef in text
1298sub output_typedef_text(%) {
1299    my %args = %{$_[0]};
1300    my ($parameter);
1301    my $count;
1302    print "Typedef:\n\n";
1303
1304    print "typedef " . $args{'typedef'} . " - " . $args{'purpose'} . "\n";
1305    output_section_text(@_);
1306}
1307
1308# output struct as text
1309sub output_struct_text(%) {
1310    my %args = %{$_[0]};
1311    my ($parameter);
1312
1313    print $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "\n\n";
1314    print $args{'type'} . " " . $args{'struct'} . " {\n";
1315    foreach $parameter (@{$args{'parameterlist'}}) {
1316	if ($parameter =~ /^#/) {
1317	    print "$parameter\n";
1318	    next;
1319	}
1320
1321	my $parameter_name = $parameter;
1322	$parameter_name =~ s/\[.*//;
1323
1324	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1325	$type = $args{'parametertypes'}{$parameter};
1326	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1327	    # pointer-to-function
1328	    print "\t$1 $parameter) ($2);\n";
1329	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1330	    # bitfield
1331	    print "\t$1 $parameter$2;\n";
1332	} else {
1333	    print "\t" . $type . " " . $parameter . ";\n";
1334	}
1335    }
1336    print "};\n\n";
1337
1338    print "Members:\n\n";
1339    foreach $parameter (@{$args{'parameterlist'}}) {
1340	($parameter =~ /^#/) && next;
1341
1342	my $parameter_name = $parameter;
1343	$parameter_name =~ s/\[.*//;
1344
1345	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1346	print "$parameter\n\t";
1347	print $args{'parameterdescs'}{$parameter_name} . "\n";
1348    }
1349    print "\n";
1350    output_section_text(@_);
1351}
1352
1353sub output_blockhead_text(%) {
1354    my %args = %{$_[0]};
1355    my ($parameter, $section);
1356
1357    foreach $section (@{$args{'sectionlist'}}) {
1358	print " $section:\n";
1359	print "    -> ";
1360	output_highlight($args{'sections'}{$section});
1361    }
1362}
1363
1364##
1365# generic output function for all types (function, struct/union, typedef, enum);
1366# calls the generated, variable output_ function name based on
1367# functype and output_mode
1368sub output_declaration {
1369    no strict 'refs';
1370    my $name = shift;
1371    my $functype = shift;
1372    my $func = "output_${functype}_$output_mode";
1373    if (($function_only==0) ||
1374	( $function_only == 1 && defined($function_table{$name})) ||
1375	( $function_only == 2 && !defined($function_table{$name})))
1376    {
1377	&$func(@_);
1378	$section_counter++;
1379    }
1380}
1381
1382##
1383# generic output function - calls the right one based on current output mode.
1384sub output_blockhead {
1385    no strict 'refs';
1386    my $func = "output_blockhead_" . $output_mode;
1387    &$func(@_);
1388    $section_counter++;
1389}
1390
1391##
1392# takes a declaration (struct, union, enum, typedef) and
1393# invokes the right handler. NOT called for functions.
1394sub dump_declaration($$) {
1395    no strict 'refs';
1396    my ($prototype, $file) = @_;
1397    my $func = "dump_" . $decl_type;
1398    &$func(@_);
1399}
1400
1401sub dump_union($$) {
1402    dump_struct(@_);
1403}
1404
1405sub dump_struct($$) {
1406    my $x = shift;
1407    my $file = shift;
1408    my $nested;
1409
1410    if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
1411	#my $decl_type = $1;
1412	$declaration_name = $2;
1413	my $members = $3;
1414
1415	# ignore embedded structs or unions
1416	$members =~ s/({.*})//g;
1417	$nested = $1;
1418
1419	# ignore members marked private:
1420	$members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gos;
1421	$members =~ s/\/\*\s*private:.*//gos;
1422	# strip comments:
1423	$members =~ s/\/\*.*?\*\///gos;
1424	$nested =~ s/\/\*.*?\*\///gos;
1425	# strip kmemcheck_bitfield_{begin,end}.*;
1426	$members =~ s/kmemcheck_bitfield_.*?;//gos;
1427	# strip attributes
1428	$members =~ s/__aligned\s*\(\d+\)//gos;
1429
1430	create_parameterlist($members, ';', $file);
1431	check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);
1432
1433	output_declaration($declaration_name,
1434			   'struct',
1435			   {'struct' => $declaration_name,
1436			    'module' => $modulename,
1437			    'parameterlist' => \@parameterlist,
1438			    'parameterdescs' => \%parameterdescs,
1439			    'parametertypes' => \%parametertypes,
1440			    'sectionlist' => \@sectionlist,
1441			    'sections' => \%sections,
1442			    'purpose' => $declaration_purpose,
1443			    'type' => $decl_type
1444			   });
1445    }
1446    else {
1447	print STDERR "Error(${file}:$.): Cannot parse struct or union!\n";
1448	++$errors;
1449    }
1450}
1451
1452sub dump_enum($$) {
1453    my $x = shift;
1454    my $file = shift;
1455
1456    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
1457    $x =~ s/^#\s*define\s+.*$//; # strip #define macros inside enums
1458
1459    if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
1460	$declaration_name = $1;
1461	my $members = $2;
1462
1463	foreach my $arg (split ',', $members) {
1464	    $arg =~ s/^\s*(\w+).*/$1/;
1465	    push @parameterlist, $arg;
1466	    if (!$parameterdescs{$arg}) {
1467		$parameterdescs{$arg} = $undescribed;
1468		print STDERR "Warning(${file}:$.): Enum value '$arg' ".
1469		    "not described in enum '$declaration_name'\n";
1470	    }
1471
1472	}
1473
1474	output_declaration($declaration_name,
1475			   'enum',
1476			   {'enum' => $declaration_name,
1477			    'module' => $modulename,
1478			    'parameterlist' => \@parameterlist,
1479			    'parameterdescs' => \%parameterdescs,
1480			    'sectionlist' => \@sectionlist,
1481			    'sections' => \%sections,
1482			    'purpose' => $declaration_purpose
1483			   });
1484    }
1485    else {
1486	print STDERR "Error(${file}:$.): Cannot parse enum!\n";
1487	++$errors;
1488    }
1489}
1490
1491sub dump_typedef($$) {
1492    my $x = shift;
1493    my $file = shift;
1494
1495    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
1496    while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1497	$x =~ s/\(*.\)\s*;$/;/;
1498	$x =~ s/\[*.\]\s*;$/;/;
1499    }
1500
1501    if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1502	$declaration_name = $1;
1503
1504	output_declaration($declaration_name,
1505			   'typedef',
1506			   {'typedef' => $declaration_name,
1507			    'module' => $modulename,
1508			    'sectionlist' => \@sectionlist,
1509			    'sections' => \%sections,
1510			    'purpose' => $declaration_purpose
1511			   });
1512    }
1513    else {
1514	print STDERR "Error(${file}:$.): Cannot parse typedef!\n";
1515	++$errors;
1516    }
1517}
1518
1519sub save_struct_actual($) {
1520    my $actual = shift;
1521
1522    # strip all spaces from the actual param so that it looks like one string item
1523    $actual =~ s/\s*//g;
1524    $struct_actual = $struct_actual . $actual . " ";
1525}
1526
1527sub create_parameterlist($$$) {
1528    my $args = shift;
1529    my $splitter = shift;
1530    my $file = shift;
1531    my $type;
1532    my $param;
1533
1534    # temporarily replace commas inside function pointer definition
1535    while ($args =~ /(\([^\),]+),/) {
1536	$args =~ s/(\([^\),]+),/$1#/g;
1537    }
1538
1539    foreach my $arg (split($splitter, $args)) {
1540	# strip comments
1541	$arg =~ s/\/\*.*\*\///;
1542	# strip leading/trailing spaces
1543	$arg =~ s/^\s*//;
1544	$arg =~ s/\s*$//;
1545	$arg =~ s/\s+/ /;
1546
1547	if ($arg =~ /^#/) {
1548	    # Treat preprocessor directive as a typeless variable just to fill
1549	    # corresponding data structures "correctly". Catch it later in
1550	    # output_* subs.
1551	    push_parameter($arg, "", $file);
1552	} elsif ($arg =~ m/\(.+\)\s*\(/) {
1553	    # pointer-to-function
1554	    $arg =~ tr/#/,/;
1555	    $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
1556	    $param = $1;
1557	    $type = $arg;
1558	    $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1559	    save_struct_actual($param);
1560	    push_parameter($param, $type, $file);
1561	} elsif ($arg) {
1562	    $arg =~ s/\s*:\s*/:/g;
1563	    $arg =~ s/\s*\[/\[/g;
1564
1565	    my @args = split('\s*,\s*', $arg);
1566	    if ($args[0] =~ m/\*/) {
1567		$args[0] =~ s/(\*+)\s*/ $1/;
1568	    }
1569
1570	    my @first_arg;
1571	    if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1572		    shift @args;
1573		    push(@first_arg, split('\s+', $1));
1574		    push(@first_arg, $2);
1575	    } else {
1576		    @first_arg = split('\s+', shift @args);
1577	    }
1578
1579	    unshift(@args, pop @first_arg);
1580	    $type = join " ", @first_arg;
1581
1582	    foreach $param (@args) {
1583		if ($param =~ m/^(\*+)\s*(.*)/) {
1584		    save_struct_actual($2);
1585		    push_parameter($2, "$type $1", $file);
1586		}
1587		elsif ($param =~ m/(.*?):(\d+)/) {
1588		    if ($type ne "") { # skip unnamed bit-fields
1589			save_struct_actual($1);
1590			push_parameter($1, "$type:$2", $file)
1591		    }
1592		}
1593		else {
1594		    save_struct_actual($param);
1595		    push_parameter($param, $type, $file);
1596		}
1597	    }
1598	}
1599    }
1600}
1601
1602sub push_parameter($$$) {
1603	my $param = shift;
1604	my $type = shift;
1605	my $file = shift;
1606
1607	if (($anon_struct_union == 1) && ($type eq "") &&
1608	    ($param eq "}")) {
1609		return;		# ignore the ending }; from anon. struct/union
1610	}
1611
1612	$anon_struct_union = 0;
1613	my $param_name = $param;
1614	$param_name =~ s/\[.*//;
1615
1616	if ($type eq "" && $param =~ /\.\.\.$/)
1617	{
1618	    if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1619		$parameterdescs{$param} = "variable arguments";
1620	    }
1621	}
1622	elsif ($type eq "" && ($param eq "" or $param eq "void"))
1623	{
1624	    $param="void";
1625	    $parameterdescs{void} = "no arguments";
1626	}
1627	elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1628	# handle unnamed (anonymous) union or struct:
1629	{
1630		$type = $param;
1631		$param = "{unnamed_" . $param . "}";
1632		$parameterdescs{$param} = "anonymous\n";
1633		$anon_struct_union = 1;
1634	}
1635
1636	# warn if parameter has no description
1637	# (but ignore ones starting with # as these are not parameters
1638	# but inline preprocessor statements);
1639	# also ignore unnamed structs/unions;
1640	if (!$anon_struct_union) {
1641	if (!defined $parameterdescs{$param_name} && $param_name !~ /^#/) {
1642
1643	    $parameterdescs{$param_name} = $undescribed;
1644
1645	    if (($type eq 'function') || ($type eq 'enum')) {
1646		print STDERR "Warning(${file}:$.): Function parameter ".
1647		    "or member '$param' not " .
1648		    "described in '$declaration_name'\n";
1649	    }
1650	    print STDERR "Warning(${file}:$.):" .
1651			 " No description found for parameter '$param'\n";
1652	    ++$warnings;
1653	}
1654	}
1655
1656	# strip spaces from $param so that it is one continous string
1657	# on @parameterlist;
1658	# this fixes a problem where check_sections() cannot find
1659	# a parameter like "addr[6 + 2]" because it actually appears
1660	# as "addr[6", "+", "2]" on the parameter list;
1661	# but it's better to maintain the param string unchanged for output,
1662	# so just weaken the string compare in check_sections() to ignore
1663	# "[blah" in a parameter string;
1664	###$param =~ s/\s*//g;
1665	push @parameterlist, $param;
1666	$parametertypes{$param} = $type;
1667}
1668
1669sub check_sections($$$$$$) {
1670	my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck, $nested) = @_;
1671	my @sects = split ' ', $sectcheck;
1672	my @prms = split ' ', $prmscheck;
1673	my $err;
1674	my ($px, $sx);
1675	my $prm_clean;		# strip trailing "[array size]" and/or beginning "*"
1676
1677	foreach $sx (0 .. $#sects) {
1678		$err = 1;
1679		foreach $px (0 .. $#prms) {
1680			$prm_clean = $prms[$px];
1681			$prm_clean =~ s/\[.*\]//;
1682			$prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
1683			# ignore array size in a parameter string;
1684			# however, the original param string may contain
1685			# spaces, e.g.:  addr[6 + 2]
1686			# and this appears in @prms as "addr[6" since the
1687			# parameter list is split at spaces;
1688			# hence just ignore "[..." for the sections check;
1689			$prm_clean =~ s/\[.*//;
1690
1691			##$prm_clean =~ s/^\**//;
1692			if ($prm_clean eq $sects[$sx]) {
1693				$err = 0;
1694				last;
1695			}
1696		}
1697		if ($err) {
1698			if ($decl_type eq "function") {
1699				print STDERR "Warning(${file}:$.): " .
1700					"Excess function parameter " .
1701					"'$sects[$sx]' " .
1702					"description in '$decl_name'\n";
1703				++$warnings;
1704			} else {
1705				if ($nested !~ m/\Q$sects[$sx]\E/) {
1706				    print STDERR "Warning(${file}:$.): " .
1707					"Excess struct/union/enum/typedef member " .
1708					"'$sects[$sx]' " .
1709					"description in '$decl_name'\n";
1710				    ++$warnings;
1711				}
1712			}
1713		}
1714	}
1715}
1716
1717##
1718# takes a function prototype and the name of the current file being
1719# processed and spits out all the details stored in the global
1720# arrays/hashes.
1721sub dump_function($$) {
1722    my $prototype = shift;
1723    my $file = shift;
1724
1725    $prototype =~ s/^static +//;
1726    $prototype =~ s/^extern +//;
1727    $prototype =~ s/^asmlinkage +//;
1728    $prototype =~ s/^inline +//;
1729    $prototype =~ s/^__inline__ +//;
1730    $prototype =~ s/^__inline +//;
1731    $prototype =~ s/^__always_inline +//;
1732    $prototype =~ s/^noinline +//;
1733    $prototype =~ s/__devinit +//;
1734    $prototype =~ s/__init +//;
1735    $prototype =~ s/__init_or_module +//;
1736    $prototype =~ s/^#\s*define\s+//; #ak added
1737    $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//;
1738
1739    # Yes, this truly is vile.  We are looking for:
1740    # 1. Return type (may be nothing if we're looking at a macro)
1741    # 2. Function name
1742    # 3. Function parameters.
1743    #
1744    # All the while we have to watch out for function pointer parameters
1745    # (which IIRC is what the two sections are for), C types (these
1746    # regexps don't even start to express all the possibilities), and
1747    # so on.
1748    #
1749    # If you mess with these regexps, it's a good idea to check that
1750    # the following functions' documentation still comes out right:
1751    # - parport_register_device (function pointer parameters)
1752    # - atomic_set (macro)
1753    # - pci_match_device, __copy_to_user (long return type)
1754
1755    if ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1756	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1757	$prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1758	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1759	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1760	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1761	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1762	$prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1763	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1764	$prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1765	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1766	$prototype =~ m/^(\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1767	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1768	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1769	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1770	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1771	$prototype =~ m/^(\w+\s+\w+\s*\*\s*\w+\s*\*\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
1772	$return_type = $1;
1773	$declaration_name = $2;
1774	my $args = $3;
1775
1776	create_parameterlist($args, ',', $file);
1777    } else {
1778	print STDERR "Error(${file}:$.): cannot understand prototype: '$prototype'\n";
1779	++$errors;
1780	return;
1781    }
1782
1783	my $prms = join " ", @parameterlist;
1784	check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");
1785
1786    output_declaration($declaration_name,
1787		       'function',
1788		       {'function' => $declaration_name,
1789			'module' => $modulename,
1790			'functiontype' => $return_type,
1791			'parameterlist' => \@parameterlist,
1792			'parameterdescs' => \%parameterdescs,
1793			'parametertypes' => \%parametertypes,
1794			'sectionlist' => \@sectionlist,
1795			'sections' => \%sections,
1796			'purpose' => $declaration_purpose
1797		       });
1798}
1799
1800sub process_file($);
1801
1802# Read the file that maps relative names to absolute names for
1803# separate source and object directories and for shadow trees.
1804if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
1805	my ($relname, $absname);
1806	while(<SOURCE_MAP>) {
1807		chop();
1808		($relname, $absname) = (split())[0..1];
1809		$relname =~ s:^/+::;
1810		$source_map{$relname} = $absname;
1811	}
1812	close(SOURCE_MAP);
1813}
1814
1815foreach (@ARGV) {
1816    chomp;
1817    process_file($_);
1818}
1819if ($verbose && $errors) {
1820  print STDERR "$errors errors\n";
1821}
1822if ($verbose && $warnings) {
1823  print STDERR "$warnings warnings\n";
1824}
1825
1826exit($errors);
1827
1828sub reset_state {
1829    $function = "";
1830    %constants = ();
1831    %parameterdescs = ();
1832    %parametertypes = ();
1833    @parameterlist = ();
1834    %sections = ();
1835    @sectionlist = ();
1836    $sectcheck = "";
1837    $struct_actual = "";
1838    $prototype = "";
1839
1840    $state = 0;
1841}
1842
1843sub tracepoint_munge($) {
1844	my $file = shift;
1845	my $tracepointname = 0;
1846	my $tracepointargs = 0;
1847
1848	if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
1849		$tracepointname = $1;
1850	}
1851	if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
1852		$tracepointname = $1;
1853	}
1854	if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
1855		$tracepointname = $2;
1856	}
1857	$tracepointname =~ s/^\s+//; #strip leading whitespace
1858	if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
1859		$tracepointargs = $1;
1860	}
1861	if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
1862		print STDERR "Warning(${file}:$.): Unrecognized tracepoint format: \n".
1863			     "$prototype\n";
1864	} else {
1865		$prototype = "static inline void trace_$tracepointname($tracepointargs)";
1866	}
1867}
1868
1869sub syscall_munge() {
1870	my $void = 0;
1871
1872	$prototype =~ s@[\r\n\t]+@ @gos; # strip newlines/CR's/tabs
1873##	if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1874	if ($prototype =~ m/SYSCALL_DEFINE0/) {
1875		$void = 1;
1876##		$prototype = "long sys_$1(void)";
1877	}
1878
1879	$prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1880	if ($prototype =~ m/long (sys_.*?),/) {
1881		$prototype =~ s/,/\(/;
1882	} elsif ($void) {
1883		$prototype =~ s/\)/\(void\)/;
1884	}
1885
1886	# now delete all of the odd-number commas in $prototype
1887	# so that arg types & arg names don't have a comma between them
1888	my $count = 0;
1889	my $len = length($prototype);
1890	if ($void) {
1891		$len = 0;	# skip the for-loop
1892	}
1893	for (my $ix = 0; $ix < $len; $ix++) {
1894		if (substr($prototype, $ix, 1) eq ',') {
1895			$count++;
1896			if ($count % 2 == 1) {
1897				substr($prototype, $ix, 1) = ' ';
1898			}
1899		}
1900	}
1901}
1902
1903sub process_state3_function($$) {
1904    my $x = shift;
1905    my $file = shift;
1906
1907    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1908
1909    if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1910	# do nothing
1911    }
1912    elsif ($x =~ /([^\{]*)/) {
1913	$prototype .= $1;
1914    }
1915
1916    if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1917	$prototype =~ s@/\*.*?\*/@@gos;	# strip comments.
1918	$prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1919	$prototype =~ s@^\s+@@gos; # strip leading spaces
1920	if ($prototype =~ /SYSCALL_DEFINE/) {
1921		syscall_munge();
1922	}
1923	if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
1924	    $prototype =~ /DEFINE_SINGLE_EVENT/)
1925	{
1926		tracepoint_munge($file);
1927	}
1928	dump_function($prototype, $file);
1929	reset_state();
1930    }
1931}
1932
1933sub process_state3_type($$) {
1934    my $x = shift;
1935    my $file = shift;
1936
1937    $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1938    $x =~ s@^\s+@@gos; # strip leading spaces
1939    $x =~ s@\s+$@@gos; # strip trailing spaces
1940    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1941
1942    if ($x =~ /^#/) {
1943	# To distinguish preprocessor directive from regular declaration later.
1944	$x .= ";";
1945    }
1946
1947    while (1) {
1948	if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
1949	    $prototype .= $1 . $2;
1950	    ($2 eq '{') && $brcount++;
1951	    ($2 eq '}') && $brcount--;
1952	    if (($2 eq ';') && ($brcount == 0)) {
1953		dump_declaration($prototype, $file);
1954		reset_state();
1955		last;
1956	    }
1957	    $x = $3;
1958	} else {
1959	    $prototype .= $x;
1960	    last;
1961	}
1962    }
1963}
1964
1965# xml_escape: replace <, >, and & in the text stream;
1966#
1967# however, formatting controls that are generated internally/locally in the
1968# kernel-doc script are not escaped here; instead, they begin life like
1969# $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
1970# are converted to their mnemonic-expected output, without the 4 * '\' & ':',
1971# just before actual output; (this is done by local_unescape())
1972sub xml_escape($) {
1973	my $text = shift;
1974	if (($output_mode eq "text") || ($output_mode eq "man")) {
1975		return $text;
1976	}
1977	$text =~ s/\&/\\\\\\amp;/g;
1978	$text =~ s/\</\\\\\\lt;/g;
1979	$text =~ s/\>/\\\\\\gt;/g;
1980	return $text;
1981}
1982
1983# convert local escape strings to html
1984# local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
1985sub local_unescape($) {
1986	my $text = shift;
1987	if (($output_mode eq "text") || ($output_mode eq "man")) {
1988		return $text;
1989	}
1990	$text =~ s/\\\\\\\\lt:/</g;
1991	$text =~ s/\\\\\\\\gt:/>/g;
1992	return $text;
1993}
1994
1995sub process_file($) {
1996    my $file;
1997    my $identifier;
1998    my $func;
1999    my $descr;
2000    my $in_purpose = 0;
2001    my $initial_section_counter = $section_counter;
2002
2003    if (defined($ENV{'SRCTREE'})) {
2004	$file = "$ENV{'SRCTREE'}" . "/" . "@_";
2005    }
2006    else {
2007	$file = "@_";
2008    }
2009    if (defined($source_map{$file})) {
2010	$file = $source_map{$file};
2011    }
2012
2013    if (!open(IN,"<$file")) {
2014	print STDERR "Error: Cannot open file $file\n";
2015	++$errors;
2016	return;
2017    }
2018
2019    $. = 1;
2020
2021    $section_counter = 0;
2022    while (<IN>) {
2023	if ($state == 0) {
2024	    if (/$doc_start/o) {
2025		$state = 1;		# next line is always the function name
2026		$in_doc_sect = 0;
2027	    }
2028	} elsif ($state == 1) {	# this line is the function name (always)
2029	    if (/$doc_block/o) {
2030		$state = 4;
2031		$contents = "";
2032		if ( $1 eq "" ) {
2033			$section = $section_intro;
2034		} else {
2035			$section = $1;
2036		}
2037	    }
2038	    elsif (/$doc_decl/o) {
2039		$identifier = $1;
2040		if (/\s*([\w\s]+?)\s*-/) {
2041		    $identifier = $1;
2042		}
2043
2044		$state = 2;
2045		if (/-(.*)/) {
2046		    # strip leading/trailing/multiple spaces
2047		    $descr= $1;
2048		    $descr =~ s/^\s*//;
2049		    $descr =~ s/\s*$//;
2050		    $descr =~ s/\s+/ /;
2051		    $declaration_purpose = xml_escape($descr);
2052		    $in_purpose = 1;
2053		} else {
2054		    $declaration_purpose = "";
2055		}
2056
2057		if (($declaration_purpose eq "") && $verbose) {
2058			print STDERR "Warning(${file}:$.): missing initial short description on line:\n";
2059			print STDERR $_;
2060			++$warnings;
2061		}
2062
2063		if ($identifier =~ m/^struct/) {
2064		    $decl_type = 'struct';
2065		} elsif ($identifier =~ m/^union/) {
2066		    $decl_type = 'union';
2067		} elsif ($identifier =~ m/^enum/) {
2068		    $decl_type = 'enum';
2069		} elsif ($identifier =~ m/^typedef/) {
2070		    $decl_type = 'typedef';
2071		} else {
2072		    $decl_type = 'function';
2073		}
2074
2075		if ($verbose) {
2076		    print STDERR "Info(${file}:$.): Scanning doc for $identifier\n";
2077		}
2078	    } else {
2079		print STDERR "Warning(${file}:$.): Cannot understand $_ on line $.",
2080		" - I thought it was a doc line\n";
2081		++$warnings;
2082		$state = 0;
2083	    }
2084	} elsif ($state == 2) {	# look for head: lines, and include content
2085	    if (/$doc_sect/o) {
2086		$newsection = $1;
2087		$newcontents = $2;
2088
2089		if (($contents ne "") && ($contents ne "\n")) {
2090		    if (!$in_doc_sect && $verbose) {
2091			print STDERR "Warning(${file}:$.): contents before sections\n";
2092			++$warnings;
2093		    }
2094		    dump_section($file, $section, xml_escape($contents));
2095		    $section = $section_default;
2096		}
2097
2098		$in_doc_sect = 1;
2099		$in_purpose = 0;
2100		$contents = $newcontents;
2101		if ($contents ne "") {
2102		    while ((substr($contents, 0, 1) eq " ") ||
2103			substr($contents, 0, 1) eq "\t") {
2104			    $contents = substr($contents, 1);
2105		    }
2106		    $contents .= "\n";
2107		}
2108		$section = $newsection;
2109	    } elsif (/$doc_end/) {
2110
2111		if (($contents ne "") && ($contents ne "\n")) {
2112		    dump_section($file, $section, xml_escape($contents));
2113		    $section = $section_default;
2114		    $contents = "";
2115		}
2116		# look for doc_com + <text> + doc_end:
2117		if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2118		    print STDERR "Warning(${file}:$.): suspicious ending line: $_";
2119		    ++$warnings;
2120		}
2121
2122		$prototype = "";
2123		$state = 3;
2124		$brcount = 0;
2125#		print STDERR "end of doc comment, looking for prototype\n";
2126	    } elsif (/$doc_content/) {
2127		# miguel-style comment kludge, look for blank lines after
2128		# @parameter line to signify start of description
2129		if ($1 eq "") {
2130		    if ($section =~ m/^@/ || $section eq $section_context) {
2131			dump_section($file, $section, xml_escape($contents));
2132			$section = $section_default;
2133			$contents = "";
2134		    } else {
2135			$contents .= "\n";
2136		    }
2137		    $in_purpose = 0;
2138		} elsif ($in_purpose == 1) {
2139		    # Continued declaration purpose
2140		    chomp($declaration_purpose);
2141		    $declaration_purpose .= " " . xml_escape($1);
2142		} else {
2143		    $contents .= $1 . "\n";
2144		}
2145	    } else {
2146		# i dont know - bad line?  ignore.
2147		print STDERR "Warning(${file}:$.): bad line: $_";
2148		++$warnings;
2149	    }
2150	} elsif ($state == 3) {	# scanning for function '{' (end of prototype)
2151	    if ($decl_type eq 'function') {
2152		process_state3_function($_, $file);
2153	    } else {
2154		process_state3_type($_, $file);
2155	    }
2156	} elsif ($state == 4) {
2157		# Documentation block
2158		if (/$doc_block/) {
2159			dump_doc_section($file, $section, xml_escape($contents));
2160			$contents = "";
2161			$function = "";
2162			%constants = ();
2163			%parameterdescs = ();
2164			%parametertypes = ();
2165			@parameterlist = ();
2166			%sections = ();
2167			@sectionlist = ();
2168			$prototype = "";
2169			if ( $1 eq "" ) {
2170				$section = $section_intro;
2171			} else {
2172				$section = $1;
2173			}
2174		}
2175		elsif (/$doc_end/)
2176		{
2177			dump_doc_section($file, $section, xml_escape($contents));
2178			$contents = "";
2179			$function = "";
2180			%constants = ();
2181			%parameterdescs = ();
2182			%parametertypes = ();
2183			@parameterlist = ();
2184			%sections = ();
2185			@sectionlist = ();
2186			$prototype = "";
2187			$state = 0;
2188		}
2189		elsif (/$doc_content/)
2190		{
2191			if ( $1 eq "" )
2192			{
2193				$contents .= $blankline;
2194			}
2195			else
2196			{
2197				$contents .= $1 . "\n";
2198			}
2199		}
2200	}
2201    }
2202    if ($initial_section_counter == $section_counter) {
2203	print STDERR "Warning(${file}): no structured comments found\n";
2204	if ($output_mode eq "xml") {
2205	    # The template wants at least one RefEntry here; make one.
2206	    print "<refentry>\n";
2207	    print " <refnamediv>\n";
2208	    print "  <refname>\n";
2209	    print "   ${file}\n";
2210	    print "  </refname>\n";
2211	    print "  <refpurpose>\n";
2212	    print "   Document generation inconsistency\n";
2213	    print "  </refpurpose>\n";
2214	    print " </refnamediv>\n";
2215	    print " <refsect1>\n";
2216	    print "  <title>\n";
2217	    print "   Oops\n";
2218	    print "  </title>\n";
2219	    print "  <warning>\n";
2220	    print "   <para>\n";
2221	    print "    The template for this document tried to insert\n";
2222	    print "    the structured comment from the file\n";
2223	    print "    <filename>${file}</filename> at this point,\n";
2224	    print "    but none was found.\n";
2225	    print "    This dummy section is inserted to allow\n";
2226	    print "    generation to continue.\n";
2227	    print "   </para>\n";
2228	    print "  </warning>\n";
2229	    print " </refsect1>\n";
2230	    print "</refentry>\n";
2231	}
2232    }
2233}
2234