xref: /openbmc/linux/scripts/kernel-doc (revision fd589a8f)
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# w.o. 03-11-2000: added the '-filelist' option.
17
18# 18/01/2001 - 	Cleanups
19# 		Functions prototyped as foo(void) same as foo()
20# 		Stop eval'ing where we don't need to.
21# -- huggie@earth.li
22
23# 27/06/2001 -  Allowed whitespace after initial "/**" and
24#               allowed comments before function declarations.
25# -- Christian Kreibich <ck@whoop.org>
26
27# Still to do:
28# 	- add perldoc documentation
29# 	- Look more closely at some of the scarier bits :)
30
31# 26/05/2001 - 	Support for separate source and object trees.
32#		Return error code.
33# 		Keith Owens <kaos@ocs.com.au>
34
35# 23/09/2001 - Added support for typedefs, structs, enums and unions
36#              Support for Context section; can be terminated using empty line
37#              Small fixes (like spaces vs. \s in regex)
38# -- Tim Jansen <tim@tjansen.de>
39
40
41#
42# This will read a 'c' file and scan for embedded comments in the
43# style of gnome comments (+minor extensions - see below).
44#
45
46# Note: This only supports 'c'.
47
48# usage:
49# kernel-doc [ -docbook | -html | -text | -man ] [ -no-doc-sections ]
50#           [ -function funcname [ -function funcname ...] ] c file(s)s > outputfile
51# or
52#           [ -nofunction funcname [ -function funcname ...] ] c file(s)s > outputfile
53#
54#  Set output format using one of -docbook -html -text or -man.  Default is man.
55#
56#  -no-doc-sections
57#	Do not output DOC: sections
58#
59#  -function funcname
60#	If set, then only generate documentation for the given function(s) or
61#	DOC: section titles.  All other functions and DOC: sections are ignored.
62#
63#  -nofunction funcname
64#	If set, then only generate documentation for the other function(s)/DOC:
65#	sections. Cannot be used together with -function (yes, that's a bug --
66#	perl hackers can fix it 8))
67#
68#  c files - list of 'c' files to process
69#
70#  All output goes to stdout, with errors to stderr.
71
72#
73# format of comments.
74# In the following table, (...)? signifies optional structure.
75#                         (...)* signifies 0 or more structure elements
76# /**
77#  * function_name(:)? (- short description)?
78# (* @parameterx: (description of parameter x)?)*
79# (* a blank line)?
80#  * (Description:)? (Description of function)?
81#  * (section header: (section description)? )*
82#  (*)?*/
83#
84# So .. the trivial example would be:
85#
86# /**
87#  * my_function
88#  */
89#
90# If the Description: header tag is omitted, then there must be a blank line
91# after the last parameter specification.
92# e.g.
93# /**
94#  * my_function - does my stuff
95#  * @my_arg: its mine damnit
96#  *
97#  * Does my stuff explained.
98#  */
99#
100#  or, could also use:
101# /**
102#  * my_function - does my stuff
103#  * @my_arg: its mine damnit
104#  * Description: Does my stuff explained.
105#  */
106# etc.
107#
108# Besides functions you can also write documentation for structs, unions,
109# enums and typedefs. Instead of the function name you must write the name
110# of the declaration;  the struct/union/enum/typedef must always precede
111# the name. Nesting of declarations is not supported.
112# Use the argument mechanism to document members or constants.
113# e.g.
114# /**
115#  * struct my_struct - short description
116#  * @a: first member
117#  * @b: second member
118#  *
119#  * Longer description
120#  */
121# struct my_struct {
122#     int a;
123#     int b;
124# /* private: */
125#     int c;
126# };
127#
128# All descriptions can be multiline, except the short function description.
129#
130# You can also add additional sections. When documenting kernel functions you
131# should document the "Context:" of the function, e.g. whether the functions
132# can be called form interrupts. Unlike other sections you can end it with an
133# empty line.
134# Example-sections should contain the string EXAMPLE so that they are marked
135# appropriately in DocBook.
136#
137# Example:
138# /**
139#  * user_function - function that can only be called in user context
140#  * @a: some argument
141#  * Context: !in_interrupt()
142#  *
143#  * Some description
144#  * Example:
145#  *    user_function(22);
146#  */
147# ...
148#
149#
150# All descriptive text is further processed, scanning for the following special
151# patterns, which are highlighted appropriately.
152#
153# 'funcname()' - function
154# '$ENVVAR' - environmental variable
155# '&struct_name' - name of a structure (up to two words including 'struct')
156# '@parameter' - name of a parameter
157# '%CONST' - name of a constant.
158
159my $errors = 0;
160my $warnings = 0;
161my $anon_struct_union = 0;
162
163# match expressions used to find embedded type information
164my $type_constant = '\%([-_\w]+)';
165my $type_func = '(\w+)\(\)';
166my $type_param = '\@(\w+)';
167my $type_struct = '\&((struct\s*)*[_\w]+)';
168my $type_struct_xml = '\\&amp;((struct\s*)*[_\w]+)';
169my $type_env = '(\$\w+)';
170
171# Output conversion substitutions.
172#  One for each output format
173
174# these work fairly well
175my %highlights_html = ( $type_constant, "<i>\$1</i>",
176			$type_func, "<b>\$1</b>",
177			$type_struct_xml, "<i>\$1</i>",
178			$type_env, "<b><i>\$1</i></b>",
179			$type_param, "<tt><b>\$1</b></tt>" );
180my $local_lt = "\\\\\\\\lt:";
181my $local_gt = "\\\\\\\\gt:";
182my $blankline_html = $local_lt . "p" . $local_gt;	# was "<p>"
183
184# XML, docbook format
185my %highlights_xml = ( "([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>",
186			$type_constant, "<constant>\$1</constant>",
187			$type_func, "<function>\$1</function>",
188			$type_struct_xml, "<structname>\$1</structname>",
189			$type_env, "<envar>\$1</envar>",
190			$type_param, "<parameter>\$1</parameter>" );
191my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n";
192
193# gnome, docbook format
194my %highlights_gnome = ( $type_constant, "<replaceable class=\"option\">\$1</replaceable>",
195			 $type_func, "<function>\$1</function>",
196			 $type_struct, "<structname>\$1</structname>",
197			 $type_env, "<envar>\$1</envar>",
198			 $type_param, "<parameter>\$1</parameter>" );
199my $blankline_gnome = "</para><para>\n";
200
201# these are pretty rough
202my %highlights_man = ( $type_constant, "\$1",
203		       $type_func, "\\\\fB\$1\\\\fP",
204		       $type_struct, "\\\\fI\$1\\\\fP",
205		       $type_param, "\\\\fI\$1\\\\fP" );
206my $blankline_man = "";
207
208# text-mode
209my %highlights_text = ( $type_constant, "\$1",
210			$type_func, "\$1",
211			$type_struct, "\$1",
212			$type_param, "\$1" );
213my $blankline_text = "";
214
215
216sub usage {
217    print "Usage: $0 [ -v ] [ -docbook | -html | -text | -man ] [ -no-doc-sections ]\n";
218    print "         [ -function funcname [ -function funcname ...] ]\n";
219    print "         [ -nofunction funcname [ -nofunction funcname ...] ]\n";
220    print "         c source file(s) > outputfile\n";
221    print "         -v : verbose output, more warnings & other info listed\n";
222    exit 1;
223}
224
225# read arguments
226if ($#ARGV == -1) {
227    usage();
228}
229
230my $verbose = 0;
231my $output_mode = "man";
232my $no_doc_sections = 0;
233my %highlights = %highlights_man;
234my $blankline = $blankline_man;
235my $modulename = "Kernel API";
236my $function_only = 0;
237my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
238		'July', 'August', 'September', 'October',
239		'November', 'December')[(localtime)[4]] .
240  " " . ((localtime)[5]+1900);
241
242# Essentially these are globals
243# They probably want to be tidied up, made more localised or something.
244# CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
245# could cause "use of undefined value" or other bugs.
246my ($function, %function_table, %parametertypes, $declaration_purpose);
247my ($type, $declaration_name, $return_type);
248my ($newsection, $newcontents, $prototype, $filelist, $brcount, %source_map);
249
250if (defined($ENV{'KBUILD_VERBOSE'})) {
251	$verbose = "$ENV{'KBUILD_VERBOSE'}";
252}
253
254# Generated docbook code is inserted in a template at a point where
255# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
256# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
257# We keep track of number of generated entries and generate a dummy
258# if needs be to ensure the expanded template can be postprocessed
259# into html.
260my $section_counter = 0;
261
262my $lineprefix="";
263
264# states
265# 0 - normal code
266# 1 - looking for function name
267# 2 - scanning field start.
268# 3 - scanning prototype.
269# 4 - documentation block
270my $state;
271my $in_doc_sect;
272
273#declaration types: can be
274# 'function', 'struct', 'union', 'enum', 'typedef'
275my $decl_type;
276
277my $doc_special = "\@\%\$\&";
278
279my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
280my $doc_end = '\*/';
281my $doc_com = '\s*\*\s*';
282my $doc_decl = $doc_com . '(\w+)';
283my $doc_sect = $doc_com . '([' . $doc_special . ']?[\w\s]+):(.*)';
284my $doc_content = $doc_com . '(.*)';
285my $doc_block = $doc_com . 'DOC:\s*(.*)?';
286
287my %constants;
288my %parameterdescs;
289my @parameterlist;
290my %sections;
291my @sectionlist;
292my $sectcheck;
293my $struct_actual;
294
295my $contents = "";
296my $section_default = "Description";	# default section
297my $section_intro = "Introduction";
298my $section = $section_default;
299my $section_context = "Context";
300
301my $undescribed = "-- undescribed --";
302
303reset_state();
304
305while ($ARGV[0] =~ m/^-(.*)/) {
306    my $cmd = shift @ARGV;
307    if ($cmd eq "-html") {
308	$output_mode = "html";
309	%highlights = %highlights_html;
310	$blankline = $blankline_html;
311    } elsif ($cmd eq "-man") {
312	$output_mode = "man";
313	%highlights = %highlights_man;
314	$blankline = $blankline_man;
315    } elsif ($cmd eq "-text") {
316	$output_mode = "text";
317	%highlights = %highlights_text;
318	$blankline = $blankline_text;
319    } elsif ($cmd eq "-docbook") {
320	$output_mode = "xml";
321	%highlights = %highlights_xml;
322	$blankline = $blankline_xml;
323    } elsif ($cmd eq "-gnome") {
324	$output_mode = "gnome";
325	%highlights = %highlights_gnome;
326	$blankline = $blankline_gnome;
327    } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
328	$modulename = shift @ARGV;
329    } elsif ($cmd eq "-function") { # to only output specific functions
330	$function_only = 1;
331	$function = shift @ARGV;
332	$function_table{$function} = 1;
333    } elsif ($cmd eq "-nofunction") { # to only output specific functions
334	$function_only = 2;
335	$function = shift @ARGV;
336	$function_table{$function} = 1;
337    } elsif ($cmd eq "-v") {
338	$verbose = 1;
339    } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
340	usage();
341    } elsif ($cmd eq '-filelist') {
342	    $filelist = shift @ARGV;
343    } elsif ($cmd eq '-no-doc-sections') {
344	    $no_doc_sections = 1;
345    }
346}
347
348# get kernel version from env
349sub get_kernel_version() {
350    my $version = 'unknown kernel version';
351
352    if (defined($ENV{'KERNELVERSION'})) {
353	$version = $ENV{'KERNELVERSION'};
354    }
355    return $version;
356}
357my $kernelversion = get_kernel_version();
358
359# generate a sequence of code that will splice in highlighting information
360# using the s// operator.
361my $dohighlight = "";
362foreach my $pattern (keys %highlights) {
363#   print STDERR "scanning pattern:$pattern, highlight:($highlights{$pattern})\n";
364    $dohighlight .=  "\$contents =~ s:$pattern:$highlights{$pattern}:gs;\n";
365}
366
367##
368# dumps section contents to arrays/hashes intended for that purpose.
369#
370sub dump_section {
371    my $file = shift;
372    my $name = shift;
373    my $contents = join "\n", @_;
374
375    if ($name =~ m/$type_constant/) {
376	$name = $1;
377#	print STDERR "constant section '$1' = '$contents'\n";
378	$constants{$name} = $contents;
379    } elsif ($name =~ m/$type_param/) {
380#	print STDERR "parameter def '$1' = '$contents'\n";
381	$name = $1;
382	$parameterdescs{$name} = $contents;
383	$sectcheck = $sectcheck . $name . " ";
384    } elsif ($name eq "@\.\.\.") {
385#	print STDERR "parameter def '...' = '$contents'\n";
386	$name = "...";
387	$parameterdescs{$name} = $contents;
388	$sectcheck = $sectcheck . $name . " ";
389    } else {
390#	print STDERR "other section '$name' = '$contents'\n";
391	if (defined($sections{$name}) && ($sections{$name} ne "")) {
392		print STDERR "Error(${file}:$.): duplicate section name '$name'\n";
393		++$errors;
394	}
395	$sections{$name} = $contents;
396	push @sectionlist, $name;
397    }
398}
399
400##
401# dump DOC: section after checking that it should go out
402#
403sub dump_doc_section {
404    my $file = shift;
405    my $name = shift;
406    my $contents = join "\n", @_;
407
408    if ($no_doc_sections) {
409        return;
410    }
411
412    if (($function_only == 0) ||
413	( $function_only == 1 && defined($function_table{$name})) ||
414	( $function_only == 2 && !defined($function_table{$name})))
415    {
416	dump_section($file, $name, $contents);
417	output_blockhead({'sectionlist' => \@sectionlist,
418			  'sections' => \%sections,
419			  'module' => $modulename,
420			  'content-only' => ($function_only != 0), });
421    }
422}
423
424##
425# output function
426#
427# parameterdescs, a hash.
428#  function => "function name"
429#  parameterlist => @list of parameters
430#  parameterdescs => %parameter descriptions
431#  sectionlist => @list of sections
432#  sections => %section descriptions
433#
434
435sub output_highlight {
436    my $contents = join "\n",@_;
437    my $line;
438
439#   DEBUG
440#   if (!defined $contents) {
441#	use Carp;
442#	confess "output_highlight got called with no args?\n";
443#   }
444
445    if ($output_mode eq "html" || $output_mode eq "xml") {
446	$contents = local_unescape($contents);
447	# convert data read & converted thru xml_escape() into &xyz; format:
448	$contents =~ s/\\\\\\/&/g;
449    }
450#   print STDERR "contents b4:$contents\n";
451    eval $dohighlight;
452    die $@ if $@;
453#   print STDERR "contents af:$contents\n";
454
455    foreach $line (split "\n", $contents) {
456	if ($line eq ""){
457	    print $lineprefix, local_unescape($blankline);
458	} else {
459	    $line =~ s/\\\\\\/\&/g;
460	    if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
461		print "\\&$line";
462	    } else {
463		print $lineprefix, $line;
464	    }
465	}
466	print "\n";
467    }
468}
469
470#output sections in html
471sub output_section_html(%) {
472    my %args = %{$_[0]};
473    my $section;
474
475    foreach $section (@{$args{'sectionlist'}}) {
476	print "<h3>$section</h3>\n";
477	print "<blockquote>\n";
478	output_highlight($args{'sections'}{$section});
479	print "</blockquote>\n";
480    }
481}
482
483# output enum in html
484sub output_enum_html(%) {
485    my %args = %{$_[0]};
486    my ($parameter);
487    my $count;
488    print "<h2>enum " . $args{'enum'} . "</h2>\n";
489
490    print "<b>enum " . $args{'enum'} . "</b> {<br>\n";
491    $count = 0;
492    foreach $parameter (@{$args{'parameterlist'}}) {
493	print " <b>" . $parameter . "</b>";
494	if ($count != $#{$args{'parameterlist'}}) {
495	    $count++;
496	    print ",\n";
497	}
498	print "<br>";
499    }
500    print "};<br>\n";
501
502    print "<h3>Constants</h3>\n";
503    print "<dl>\n";
504    foreach $parameter (@{$args{'parameterlist'}}) {
505	print "<dt><b>" . $parameter . "</b>\n";
506	print "<dd>";
507	output_highlight($args{'parameterdescs'}{$parameter});
508    }
509    print "</dl>\n";
510    output_section_html(@_);
511    print "<hr>\n";
512}
513
514# output typedef in html
515sub output_typedef_html(%) {
516    my %args = %{$_[0]};
517    my ($parameter);
518    my $count;
519    print "<h2>typedef " . $args{'typedef'} . "</h2>\n";
520
521    print "<b>typedef " . $args{'typedef'} . "</b>\n";
522    output_section_html(@_);
523    print "<hr>\n";
524}
525
526# output struct in html
527sub output_struct_html(%) {
528    my %args = %{$_[0]};
529    my ($parameter);
530
531    print "<h2>" . $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "</h2>\n";
532    print "<b>" . $args{'type'} . " " . $args{'struct'} . "</b> {<br>\n";
533    foreach $parameter (@{$args{'parameterlist'}}) {
534	if ($parameter =~ /^#/) {
535		print "$parameter<br>\n";
536		next;
537	}
538	my $parameter_name = $parameter;
539	$parameter_name =~ s/\[.*//;
540
541	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
542	$type = $args{'parametertypes'}{$parameter};
543	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
544	    # pointer-to-function
545	    print "&nbsp; &nbsp; <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
546	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
547	    # bitfield
548	    print "&nbsp; &nbsp; <i>$1</i> <b>$parameter</b>$2;<br>\n";
549	} else {
550	    print "&nbsp; &nbsp; <i>$type</i> <b>$parameter</b>;<br>\n";
551	}
552    }
553    print "};<br>\n";
554
555    print "<h3>Members</h3>\n";
556    print "<dl>\n";
557    foreach $parameter (@{$args{'parameterlist'}}) {
558	($parameter =~ /^#/) && next;
559
560	my $parameter_name = $parameter;
561	$parameter_name =~ s/\[.*//;
562
563	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
564	print "<dt><b>" . $parameter . "</b>\n";
565	print "<dd>";
566	output_highlight($args{'parameterdescs'}{$parameter_name});
567    }
568    print "</dl>\n";
569    output_section_html(@_);
570    print "<hr>\n";
571}
572
573# output function in html
574sub output_function_html(%) {
575    my %args = %{$_[0]};
576    my ($parameter, $section);
577    my $count;
578
579    print "<h2>" . $args{'function'} . " - " . $args{'purpose'} . "</h2>\n";
580    print "<i>" . $args{'functiontype'} . "</i>\n";
581    print "<b>" . $args{'function'} . "</b>\n";
582    print "(";
583    $count = 0;
584    foreach $parameter (@{$args{'parameterlist'}}) {
585	$type = $args{'parametertypes'}{$parameter};
586	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
587	    # pointer-to-function
588	    print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
589	} else {
590	    print "<i>" . $type . "</i> <b>" . $parameter . "</b>";
591	}
592	if ($count != $#{$args{'parameterlist'}}) {
593	    $count++;
594	    print ",\n";
595	}
596    }
597    print ")\n";
598
599    print "<h3>Arguments</h3>\n";
600    print "<dl>\n";
601    foreach $parameter (@{$args{'parameterlist'}}) {
602	my $parameter_name = $parameter;
603	$parameter_name =~ s/\[.*//;
604
605	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
606	print "<dt><b>" . $parameter . "</b>\n";
607	print "<dd>";
608	output_highlight($args{'parameterdescs'}{$parameter_name});
609    }
610    print "</dl>\n";
611    output_section_html(@_);
612    print "<hr>\n";
613}
614
615# output DOC: block header in html
616sub output_blockhead_html(%) {
617    my %args = %{$_[0]};
618    my ($parameter, $section);
619    my $count;
620
621    foreach $section (@{$args{'sectionlist'}}) {
622	print "<h3>$section</h3>\n";
623	print "<ul>\n";
624	output_highlight($args{'sections'}{$section});
625	print "</ul>\n";
626    }
627    print "<hr>\n";
628}
629
630sub output_section_xml(%) {
631    my %args = %{$_[0]};
632    my $section;
633    # print out each section
634    $lineprefix="   ";
635    foreach $section (@{$args{'sectionlist'}}) {
636	print "<refsect1>\n";
637	print "<title>$section</title>\n";
638	if ($section =~ m/EXAMPLE/i) {
639	    print "<informalexample><programlisting>\n";
640	} else {
641	    print "<para>\n";
642	}
643	output_highlight($args{'sections'}{$section});
644	if ($section =~ m/EXAMPLE/i) {
645	    print "</programlisting></informalexample>\n";
646	} else {
647	    print "</para>\n";
648	}
649	print "</refsect1>\n";
650    }
651}
652
653# output function in XML DocBook
654sub output_function_xml(%) {
655    my %args = %{$_[0]};
656    my ($parameter, $section);
657    my $count;
658    my $id;
659
660    $id = "API-" . $args{'function'};
661    $id =~ s/[^A-Za-z0-9]/-/g;
662
663    print "<refentry id=\"$id\">\n";
664    print "<refentryinfo>\n";
665    print " <title>LINUX</title>\n";
666    print " <productname>Kernel Hackers Manual</productname>\n";
667    print " <date>$man_date</date>\n";
668    print "</refentryinfo>\n";
669    print "<refmeta>\n";
670    print " <refentrytitle><phrase>" . $args{'function'} . "</phrase></refentrytitle>\n";
671    print " <manvolnum>9</manvolnum>\n";
672    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
673    print "</refmeta>\n";
674    print "<refnamediv>\n";
675    print " <refname>" . $args{'function'} . "</refname>\n";
676    print " <refpurpose>\n";
677    print "  ";
678    output_highlight ($args{'purpose'});
679    print " </refpurpose>\n";
680    print "</refnamediv>\n";
681
682    print "<refsynopsisdiv>\n";
683    print " <title>Synopsis</title>\n";
684    print "  <funcsynopsis><funcprototype>\n";
685    print "   <funcdef>" . $args{'functiontype'} . " ";
686    print "<function>" . $args{'function'} . " </function></funcdef>\n";
687
688    $count = 0;
689    if ($#{$args{'parameterlist'}} >= 0) {
690	foreach $parameter (@{$args{'parameterlist'}}) {
691	    $type = $args{'parametertypes'}{$parameter};
692	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
693		# pointer-to-function
694		print "   <paramdef>$1<parameter>$parameter</parameter>)\n";
695		print "     <funcparams>$2</funcparams></paramdef>\n";
696	    } else {
697		print "   <paramdef>" . $type;
698		print " <parameter>$parameter</parameter></paramdef>\n";
699	    }
700	}
701    } else {
702	print "  <void/>\n";
703    }
704    print "  </funcprototype></funcsynopsis>\n";
705    print "</refsynopsisdiv>\n";
706
707    # print parameters
708    print "<refsect1>\n <title>Arguments</title>\n";
709    if ($#{$args{'parameterlist'}} >= 0) {
710	print " <variablelist>\n";
711	foreach $parameter (@{$args{'parameterlist'}}) {
712	    my $parameter_name = $parameter;
713	    $parameter_name =~ s/\[.*//;
714
715	    print "  <varlistentry>\n   <term><parameter>$parameter</parameter></term>\n";
716	    print "   <listitem>\n    <para>\n";
717	    $lineprefix="     ";
718	    output_highlight($args{'parameterdescs'}{$parameter_name});
719	    print "    </para>\n   </listitem>\n  </varlistentry>\n";
720	}
721	print " </variablelist>\n";
722    } else {
723	print " <para>\n  None\n </para>\n";
724    }
725    print "</refsect1>\n";
726
727    output_section_xml(@_);
728    print "</refentry>\n\n";
729}
730
731# output struct in XML DocBook
732sub output_struct_xml(%) {
733    my %args = %{$_[0]};
734    my ($parameter, $section);
735    my $id;
736
737    $id = "API-struct-" . $args{'struct'};
738    $id =~ s/[^A-Za-z0-9]/-/g;
739
740    print "<refentry id=\"$id\">\n";
741    print "<refentryinfo>\n";
742    print " <title>LINUX</title>\n";
743    print " <productname>Kernel Hackers Manual</productname>\n";
744    print " <date>$man_date</date>\n";
745    print "</refentryinfo>\n";
746    print "<refmeta>\n";
747    print " <refentrytitle><phrase>" . $args{'type'} . " " . $args{'struct'} . "</phrase></refentrytitle>\n";
748    print " <manvolnum>9</manvolnum>\n";
749    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
750    print "</refmeta>\n";
751    print "<refnamediv>\n";
752    print " <refname>" . $args{'type'} . " " . $args{'struct'} . "</refname>\n";
753    print " <refpurpose>\n";
754    print "  ";
755    output_highlight ($args{'purpose'});
756    print " </refpurpose>\n";
757    print "</refnamediv>\n";
758
759    print "<refsynopsisdiv>\n";
760    print " <title>Synopsis</title>\n";
761    print "  <programlisting>\n";
762    print $args{'type'} . " " . $args{'struct'} . " {\n";
763    foreach $parameter (@{$args{'parameterlist'}}) {
764	if ($parameter =~ /^#/) {
765	    print "$parameter\n";
766	    next;
767	}
768
769	my $parameter_name = $parameter;
770	$parameter_name =~ s/\[.*//;
771
772	defined($args{'parameterdescs'}{$parameter_name}) || next;
773	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
774	$type = $args{'parametertypes'}{$parameter};
775	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
776	    # pointer-to-function
777	    print "  $1 $parameter) ($2);\n";
778	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
779	    # bitfield
780	    print "  $1 $parameter$2;\n";
781	} else {
782	    print "  " . $type . " " . $parameter . ";\n";
783	}
784    }
785    print "};";
786    print "  </programlisting>\n";
787    print "</refsynopsisdiv>\n";
788
789    print " <refsect1>\n";
790    print "  <title>Members</title>\n";
791
792    if ($#{$args{'parameterlist'}} >= 0) {
793    print "  <variablelist>\n";
794    foreach $parameter (@{$args{'parameterlist'}}) {
795      ($parameter =~ /^#/) && next;
796
797      my $parameter_name = $parameter;
798      $parameter_name =~ s/\[.*//;
799
800      defined($args{'parameterdescs'}{$parameter_name}) || next;
801      ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
802      print "    <varlistentry>";
803      print "      <term>$parameter</term>\n";
804      print "      <listitem><para>\n";
805      output_highlight($args{'parameterdescs'}{$parameter_name});
806      print "      </para></listitem>\n";
807      print "    </varlistentry>\n";
808    }
809    print "  </variablelist>\n";
810    } else {
811	print " <para>\n  None\n </para>\n";
812    }
813    print " </refsect1>\n";
814
815    output_section_xml(@_);
816
817    print "</refentry>\n\n";
818}
819
820# output enum in XML DocBook
821sub output_enum_xml(%) {
822    my %args = %{$_[0]};
823    my ($parameter, $section);
824    my $count;
825    my $id;
826
827    $id = "API-enum-" . $args{'enum'};
828    $id =~ s/[^A-Za-z0-9]/-/g;
829
830    print "<refentry id=\"$id\">\n";
831    print "<refentryinfo>\n";
832    print " <title>LINUX</title>\n";
833    print " <productname>Kernel Hackers Manual</productname>\n";
834    print " <date>$man_date</date>\n";
835    print "</refentryinfo>\n";
836    print "<refmeta>\n";
837    print " <refentrytitle><phrase>enum " . $args{'enum'} . "</phrase></refentrytitle>\n";
838    print " <manvolnum>9</manvolnum>\n";
839    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
840    print "</refmeta>\n";
841    print "<refnamediv>\n";
842    print " <refname>enum " . $args{'enum'} . "</refname>\n";
843    print " <refpurpose>\n";
844    print "  ";
845    output_highlight ($args{'purpose'});
846    print " </refpurpose>\n";
847    print "</refnamediv>\n";
848
849    print "<refsynopsisdiv>\n";
850    print " <title>Synopsis</title>\n";
851    print "  <programlisting>\n";
852    print "enum " . $args{'enum'} . " {\n";
853    $count = 0;
854    foreach $parameter (@{$args{'parameterlist'}}) {
855	print "  $parameter";
856	if ($count != $#{$args{'parameterlist'}}) {
857	    $count++;
858	    print ",";
859	}
860	print "\n";
861    }
862    print "};";
863    print "  </programlisting>\n";
864    print "</refsynopsisdiv>\n";
865
866    print "<refsect1>\n";
867    print " <title>Constants</title>\n";
868    print "  <variablelist>\n";
869    foreach $parameter (@{$args{'parameterlist'}}) {
870      my $parameter_name = $parameter;
871      $parameter_name =~ s/\[.*//;
872
873      print "    <varlistentry>";
874      print "      <term>$parameter</term>\n";
875      print "      <listitem><para>\n";
876      output_highlight($args{'parameterdescs'}{$parameter_name});
877      print "      </para></listitem>\n";
878      print "    </varlistentry>\n";
879    }
880    print "  </variablelist>\n";
881    print "</refsect1>\n";
882
883    output_section_xml(@_);
884
885    print "</refentry>\n\n";
886}
887
888# output typedef in XML DocBook
889sub output_typedef_xml(%) {
890    my %args = %{$_[0]};
891    my ($parameter, $section);
892    my $id;
893
894    $id = "API-typedef-" . $args{'typedef'};
895    $id =~ s/[^A-Za-z0-9]/-/g;
896
897    print "<refentry id=\"$id\">\n";
898    print "<refentryinfo>\n";
899    print " <title>LINUX</title>\n";
900    print " <productname>Kernel Hackers Manual</productname>\n";
901    print " <date>$man_date</date>\n";
902    print "</refentryinfo>\n";
903    print "<refmeta>\n";
904    print " <refentrytitle><phrase>typedef " . $args{'typedef'} . "</phrase></refentrytitle>\n";
905    print " <manvolnum>9</manvolnum>\n";
906    print "</refmeta>\n";
907    print "<refnamediv>\n";
908    print " <refname>typedef " . $args{'typedef'} . "</refname>\n";
909    print " <refpurpose>\n";
910    print "  ";
911    output_highlight ($args{'purpose'});
912    print " </refpurpose>\n";
913    print "</refnamediv>\n";
914
915    print "<refsynopsisdiv>\n";
916    print " <title>Synopsis</title>\n";
917    print "  <synopsis>typedef " . $args{'typedef'} . ";</synopsis>\n";
918    print "</refsynopsisdiv>\n";
919
920    output_section_xml(@_);
921
922    print "</refentry>\n\n";
923}
924
925# output in XML DocBook
926sub output_blockhead_xml(%) {
927    my %args = %{$_[0]};
928    my ($parameter, $section);
929    my $count;
930
931    my $id = $args{'module'};
932    $id =~ s/[^A-Za-z0-9]/-/g;
933
934    # print out each section
935    $lineprefix="   ";
936    foreach $section (@{$args{'sectionlist'}}) {
937	if (!$args{'content-only'}) {
938		print "<refsect1>\n <title>$section</title>\n";
939	}
940	if ($section =~ m/EXAMPLE/i) {
941	    print "<example><para>\n";
942	} else {
943	    print "<para>\n";
944	}
945	output_highlight($args{'sections'}{$section});
946	if ($section =~ m/EXAMPLE/i) {
947	    print "</para></example>\n";
948	} else {
949	    print "</para>";
950	}
951	if (!$args{'content-only'}) {
952		print "\n</refsect1>\n";
953	}
954    }
955
956    print "\n\n";
957}
958
959# output in XML DocBook
960sub output_function_gnome {
961    my %args = %{$_[0]};
962    my ($parameter, $section);
963    my $count;
964    my $id;
965
966    $id = $args{'module'} . "-" . $args{'function'};
967    $id =~ s/[^A-Za-z0-9]/-/g;
968
969    print "<sect2>\n";
970    print " <title id=\"$id\">" . $args{'function'} . "</title>\n";
971
972    print "  <funcsynopsis>\n";
973    print "   <funcdef>" . $args{'functiontype'} . " ";
974    print "<function>" . $args{'function'} . " ";
975    print "</function></funcdef>\n";
976
977    $count = 0;
978    if ($#{$args{'parameterlist'}} >= 0) {
979	foreach $parameter (@{$args{'parameterlist'}}) {
980	    $type = $args{'parametertypes'}{$parameter};
981	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
982		# pointer-to-function
983		print "   <paramdef>$1 <parameter>$parameter</parameter>)\n";
984		print "     <funcparams>$2</funcparams></paramdef>\n";
985	    } else {
986		print "   <paramdef>" . $type;
987		print " <parameter>$parameter</parameter></paramdef>\n";
988	    }
989	}
990    } else {
991	print "  <void>\n";
992    }
993    print "  </funcsynopsis>\n";
994    if ($#{$args{'parameterlist'}} >= 0) {
995	print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
996	print "<tgroup cols=\"2\">\n";
997	print "<colspec colwidth=\"2*\">\n";
998	print "<colspec colwidth=\"8*\">\n";
999	print "<tbody>\n";
1000	foreach $parameter (@{$args{'parameterlist'}}) {
1001	    my $parameter_name = $parameter;
1002	    $parameter_name =~ s/\[.*//;
1003
1004	    print "  <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
1005	    print "   <entry>\n";
1006	    $lineprefix="     ";
1007	    output_highlight($args{'parameterdescs'}{$parameter_name});
1008	    print "    </entry></row>\n";
1009	}
1010	print " </tbody></tgroup></informaltable>\n";
1011    } else {
1012	print " <para>\n  None\n </para>\n";
1013    }
1014
1015    # print out each section
1016    $lineprefix="   ";
1017    foreach $section (@{$args{'sectionlist'}}) {
1018	print "<simplesect>\n <title>$section</title>\n";
1019	if ($section =~ m/EXAMPLE/i) {
1020	    print "<example><programlisting>\n";
1021	} else {
1022	}
1023	print "<para>\n";
1024	output_highlight($args{'sections'}{$section});
1025	print "</para>\n";
1026	if ($section =~ m/EXAMPLE/i) {
1027	    print "</programlisting></example>\n";
1028	} else {
1029	}
1030	print " </simplesect>\n";
1031    }
1032
1033    print "</sect2>\n\n";
1034}
1035
1036##
1037# output function in man
1038sub output_function_man(%) {
1039    my %args = %{$_[0]};
1040    my ($parameter, $section);
1041    my $count;
1042
1043    print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
1044
1045    print ".SH NAME\n";
1046    print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
1047
1048    print ".SH SYNOPSIS\n";
1049    if ($args{'functiontype'} ne "") {
1050	print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
1051    } else {
1052	print ".B \"" . $args{'function'} . "\n";
1053    }
1054    $count = 0;
1055    my $parenth = "(";
1056    my $post = ",";
1057    foreach my $parameter (@{$args{'parameterlist'}}) {
1058	if ($count == $#{$args{'parameterlist'}}) {
1059	    $post = ");";
1060	}
1061	$type = $args{'parametertypes'}{$parameter};
1062	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1063	    # pointer-to-function
1064	    print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
1065	} else {
1066	    $type =~ s/([^\*])$/$1 /;
1067	    print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
1068	}
1069	$count++;
1070	$parenth = "";
1071    }
1072
1073    print ".SH ARGUMENTS\n";
1074    foreach $parameter (@{$args{'parameterlist'}}) {
1075	my $parameter_name = $parameter;
1076	$parameter_name =~ s/\[.*//;
1077
1078	print ".IP \"" . $parameter . "\" 12\n";
1079	output_highlight($args{'parameterdescs'}{$parameter_name});
1080    }
1081    foreach $section (@{$args{'sectionlist'}}) {
1082	print ".SH \"", uc $section, "\"\n";
1083	output_highlight($args{'sections'}{$section});
1084    }
1085}
1086
1087##
1088# output enum in man
1089sub output_enum_man(%) {
1090    my %args = %{$_[0]};
1091    my ($parameter, $section);
1092    my $count;
1093
1094    print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
1095
1096    print ".SH NAME\n";
1097    print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
1098
1099    print ".SH SYNOPSIS\n";
1100    print "enum " . $args{'enum'} . " {\n";
1101    $count = 0;
1102    foreach my $parameter (@{$args{'parameterlist'}}) {
1103	print ".br\n.BI \"    $parameter\"\n";
1104	if ($count == $#{$args{'parameterlist'}}) {
1105	    print "\n};\n";
1106	    last;
1107	}
1108	else {
1109	    print ", \n.br\n";
1110	}
1111	$count++;
1112    }
1113
1114    print ".SH Constants\n";
1115    foreach $parameter (@{$args{'parameterlist'}}) {
1116	my $parameter_name = $parameter;
1117	$parameter_name =~ s/\[.*//;
1118
1119	print ".IP \"" . $parameter . "\" 12\n";
1120	output_highlight($args{'parameterdescs'}{$parameter_name});
1121    }
1122    foreach $section (@{$args{'sectionlist'}}) {
1123	print ".SH \"$section\"\n";
1124	output_highlight($args{'sections'}{$section});
1125    }
1126}
1127
1128##
1129# output struct in man
1130sub output_struct_man(%) {
1131    my %args = %{$_[0]};
1132    my ($parameter, $section);
1133
1134    print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
1135
1136    print ".SH NAME\n";
1137    print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
1138
1139    print ".SH SYNOPSIS\n";
1140    print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
1141
1142    foreach my $parameter (@{$args{'parameterlist'}}) {
1143	if ($parameter =~ /^#/) {
1144	    print ".BI \"$parameter\"\n.br\n";
1145	    next;
1146	}
1147	my $parameter_name = $parameter;
1148	$parameter_name =~ s/\[.*//;
1149
1150	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1151	$type = $args{'parametertypes'}{$parameter};
1152	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1153	    # pointer-to-function
1154	    print ".BI \"    " . $1 . "\" " . $parameter . " \") (" . $2 . ")" . "\"\n;\n";
1155	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1156	    # bitfield
1157	    print ".BI \"    " . $1 . "\ \" " . $parameter . $2 . " \"" . "\"\n;\n";
1158	} else {
1159	    $type =~ s/([^\*])$/$1 /;
1160	    print ".BI \"    " . $type . "\" " . $parameter . " \"" . "\"\n;\n";
1161	}
1162	print "\n.br\n";
1163    }
1164    print "};\n.br\n";
1165
1166    print ".SH Members\n";
1167    foreach $parameter (@{$args{'parameterlist'}}) {
1168	($parameter =~ /^#/) && next;
1169
1170	my $parameter_name = $parameter;
1171	$parameter_name =~ s/\[.*//;
1172
1173	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1174	print ".IP \"" . $parameter . "\" 12\n";
1175	output_highlight($args{'parameterdescs'}{$parameter_name});
1176    }
1177    foreach $section (@{$args{'sectionlist'}}) {
1178	print ".SH \"$section\"\n";
1179	output_highlight($args{'sections'}{$section});
1180    }
1181}
1182
1183##
1184# output typedef in man
1185sub output_typedef_man(%) {
1186    my %args = %{$_[0]};
1187    my ($parameter, $section);
1188
1189    print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
1190
1191    print ".SH NAME\n";
1192    print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
1193
1194    foreach $section (@{$args{'sectionlist'}}) {
1195	print ".SH \"$section\"\n";
1196	output_highlight($args{'sections'}{$section});
1197    }
1198}
1199
1200sub output_blockhead_man(%) {
1201    my %args = %{$_[0]};
1202    my ($parameter, $section);
1203    my $count;
1204
1205    print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
1206
1207    foreach $section (@{$args{'sectionlist'}}) {
1208	print ".SH \"$section\"\n";
1209	output_highlight($args{'sections'}{$section});
1210    }
1211}
1212
1213##
1214# output in text
1215sub output_function_text(%) {
1216    my %args = %{$_[0]};
1217    my ($parameter, $section);
1218    my $start;
1219
1220    print "Name:\n\n";
1221    print $args{'function'} . " - " . $args{'purpose'} . "\n";
1222
1223    print "\nSynopsis:\n\n";
1224    if ($args{'functiontype'} ne "") {
1225	$start = $args{'functiontype'} . " " . $args{'function'} . " (";
1226    } else {
1227	$start = $args{'function'} . " (";
1228    }
1229    print $start;
1230
1231    my $count = 0;
1232    foreach my $parameter (@{$args{'parameterlist'}}) {
1233	$type = $args{'parametertypes'}{$parameter};
1234	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1235	    # pointer-to-function
1236	    print $1 . $parameter . ") (" . $2;
1237	} else {
1238	    print $type . " " . $parameter;
1239	}
1240	if ($count != $#{$args{'parameterlist'}}) {
1241	    $count++;
1242	    print ",\n";
1243	    print " " x length($start);
1244	} else {
1245	    print ");\n\n";
1246	}
1247    }
1248
1249    print "Arguments:\n\n";
1250    foreach $parameter (@{$args{'parameterlist'}}) {
1251	my $parameter_name = $parameter;
1252	$parameter_name =~ s/\[.*//;
1253
1254	print $parameter . "\n\t" . $args{'parameterdescs'}{$parameter_name} . "\n";
1255    }
1256    output_section_text(@_);
1257}
1258
1259#output sections in text
1260sub output_section_text(%) {
1261    my %args = %{$_[0]};
1262    my $section;
1263
1264    print "\n";
1265    foreach $section (@{$args{'sectionlist'}}) {
1266	print "$section:\n\n";
1267	output_highlight($args{'sections'}{$section});
1268    }
1269    print "\n\n";
1270}
1271
1272# output enum in text
1273sub output_enum_text(%) {
1274    my %args = %{$_[0]};
1275    my ($parameter);
1276    my $count;
1277    print "Enum:\n\n";
1278
1279    print "enum " . $args{'enum'} . " - " . $args{'purpose'} . "\n\n";
1280    print "enum " . $args{'enum'} . " {\n";
1281    $count = 0;
1282    foreach $parameter (@{$args{'parameterlist'}}) {
1283	print "\t$parameter";
1284	if ($count != $#{$args{'parameterlist'}}) {
1285	    $count++;
1286	    print ",";
1287	}
1288	print "\n";
1289    }
1290    print "};\n\n";
1291
1292    print "Constants:\n\n";
1293    foreach $parameter (@{$args{'parameterlist'}}) {
1294	print "$parameter\n\t";
1295	print $args{'parameterdescs'}{$parameter} . "\n";
1296    }
1297
1298    output_section_text(@_);
1299}
1300
1301# output typedef in text
1302sub output_typedef_text(%) {
1303    my %args = %{$_[0]};
1304    my ($parameter);
1305    my $count;
1306    print "Typedef:\n\n";
1307
1308    print "typedef " . $args{'typedef'} . " - " . $args{'purpose'} . "\n";
1309    output_section_text(@_);
1310}
1311
1312# output struct as text
1313sub output_struct_text(%) {
1314    my %args = %{$_[0]};
1315    my ($parameter);
1316
1317    print $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "\n\n";
1318    print $args{'type'} . " " . $args{'struct'} . " {\n";
1319    foreach $parameter (@{$args{'parameterlist'}}) {
1320	if ($parameter =~ /^#/) {
1321	    print "$parameter\n";
1322	    next;
1323	}
1324
1325	my $parameter_name = $parameter;
1326	$parameter_name =~ s/\[.*//;
1327
1328	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1329	$type = $args{'parametertypes'}{$parameter};
1330	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1331	    # pointer-to-function
1332	    print "\t$1 $parameter) ($2);\n";
1333	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1334	    # bitfield
1335	    print "\t$1 $parameter$2;\n";
1336	} else {
1337	    print "\t" . $type . " " . $parameter . ";\n";
1338	}
1339    }
1340    print "};\n\n";
1341
1342    print "Members:\n\n";
1343    foreach $parameter (@{$args{'parameterlist'}}) {
1344	($parameter =~ /^#/) && next;
1345
1346	my $parameter_name = $parameter;
1347	$parameter_name =~ s/\[.*//;
1348
1349	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1350	print "$parameter\n\t";
1351	print $args{'parameterdescs'}{$parameter_name} . "\n";
1352    }
1353    print "\n";
1354    output_section_text(@_);
1355}
1356
1357sub output_blockhead_text(%) {
1358    my %args = %{$_[0]};
1359    my ($parameter, $section);
1360
1361    foreach $section (@{$args{'sectionlist'}}) {
1362	print " $section:\n";
1363	print "    -> ";
1364	output_highlight($args{'sections'}{$section});
1365    }
1366}
1367
1368##
1369# generic output function for all types (function, struct/union, typedef, enum);
1370# calls the generated, variable output_ function name based on
1371# functype and output_mode
1372sub output_declaration {
1373    no strict 'refs';
1374    my $name = shift;
1375    my $functype = shift;
1376    my $func = "output_${functype}_$output_mode";
1377    if (($function_only==0) ||
1378	( $function_only == 1 && defined($function_table{$name})) ||
1379	( $function_only == 2 && !defined($function_table{$name})))
1380    {
1381	&$func(@_);
1382	$section_counter++;
1383    }
1384}
1385
1386##
1387# generic output function - calls the right one based on current output mode.
1388sub output_blockhead {
1389    no strict 'refs';
1390    my $func = "output_blockhead_" . $output_mode;
1391    &$func(@_);
1392    $section_counter++;
1393}
1394
1395##
1396# takes a declaration (struct, union, enum, typedef) and
1397# invokes the right handler. NOT called for functions.
1398sub dump_declaration($$) {
1399    no strict 'refs';
1400    my ($prototype, $file) = @_;
1401    my $func = "dump_" . $decl_type;
1402    &$func(@_);
1403}
1404
1405sub dump_union($$) {
1406    dump_struct(@_);
1407}
1408
1409sub dump_struct($$) {
1410    my $x = shift;
1411    my $file = shift;
1412    my $nested;
1413
1414    if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
1415	#my $decl_type = $1;
1416	$declaration_name = $2;
1417	my $members = $3;
1418
1419	# ignore embedded structs or unions
1420	$members =~ s/({.*})//g;
1421	$nested = $1;
1422
1423	# ignore members marked private:
1424	$members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gos;
1425	$members =~ s/\/\*\s*private:.*//gos;
1426	# strip comments:
1427	$members =~ s/\/\*.*?\*\///gos;
1428	$nested =~ s/\/\*.*?\*\///gos;
1429	# strip kmemcheck_bitfield_{begin,end}.*;
1430	$members =~ s/kmemcheck_bitfield_.*?;//gos;
1431
1432	create_parameterlist($members, ';', $file);
1433	check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);
1434
1435	output_declaration($declaration_name,
1436			   'struct',
1437			   {'struct' => $declaration_name,
1438			    'module' => $modulename,
1439			    'parameterlist' => \@parameterlist,
1440			    'parameterdescs' => \%parameterdescs,
1441			    'parametertypes' => \%parametertypes,
1442			    'sectionlist' => \@sectionlist,
1443			    'sections' => \%sections,
1444			    'purpose' => $declaration_purpose,
1445			    'type' => $decl_type
1446			   });
1447    }
1448    else {
1449	print STDERR "Error(${file}:$.): Cannot parse struct or union!\n";
1450	++$errors;
1451    }
1452}
1453
1454sub dump_enum($$) {
1455    my $x = shift;
1456    my $file = shift;
1457
1458    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
1459    if ($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\(\)]*\)\)//;
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/^#\s*define\s+//; #ak added
1736    $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//;
1737
1738    # Yes, this truly is vile.  We are looking for:
1739    # 1. Return type (may be nothing if we're looking at a macro)
1740    # 2. Function name
1741    # 3. Function parameters.
1742    #
1743    # All the while we have to watch out for function pointer parameters
1744    # (which IIRC is what the two sections are for), C types (these
1745    # regexps don't even start to express all the possibilities), and
1746    # so on.
1747    #
1748    # If you mess with these regexps, it's a good idea to check that
1749    # the following functions' documentation still comes out right:
1750    # - parport_register_device (function pointer parameters)
1751    # - atomic_set (macro)
1752    # - pci_match_device, __copy_to_user (long return type)
1753
1754    if ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1755	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1756	$prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1757	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1758	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1759	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1760	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1761	$prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1762	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1763	$prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1764	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1765	$prototype =~ m/^(\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1766	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1767	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1768	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1769	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1770	$prototype =~ m/^(\w+\s+\w+\s*\*\s*\w+\s*\*\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
1771	$return_type = $1;
1772	$declaration_name = $2;
1773	my $args = $3;
1774
1775	create_parameterlist($args, ',', $file);
1776    } else {
1777	print STDERR "Error(${file}:$.): cannot understand prototype: '$prototype'\n";
1778	++$errors;
1779	return;
1780    }
1781
1782	my $prms = join " ", @parameterlist;
1783	check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");
1784
1785    output_declaration($declaration_name,
1786		       'function',
1787		       {'function' => $declaration_name,
1788			'module' => $modulename,
1789			'functiontype' => $return_type,
1790			'parameterlist' => \@parameterlist,
1791			'parameterdescs' => \%parameterdescs,
1792			'parametertypes' => \%parametertypes,
1793			'sectionlist' => \@sectionlist,
1794			'sections' => \%sections,
1795			'purpose' => $declaration_purpose
1796		       });
1797}
1798
1799sub process_file($);
1800
1801# Read the file that maps relative names to absolute names for
1802# separate source and object directories and for shadow trees.
1803if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
1804	my ($relname, $absname);
1805	while(<SOURCE_MAP>) {
1806		chop();
1807		($relname, $absname) = (split())[0..1];
1808		$relname =~ s:^/+::;
1809		$source_map{$relname} = $absname;
1810	}
1811	close(SOURCE_MAP);
1812}
1813
1814if ($filelist) {
1815	open(FLIST,"<$filelist") or die "Can't open file list $filelist";
1816	while(<FLIST>) {
1817		chop;
1818		process_file($_);
1819	}
1820}
1821
1822foreach (@ARGV) {
1823    chomp;
1824    process_file($_);
1825}
1826if ($verbose && $errors) {
1827  print STDERR "$errors errors\n";
1828}
1829if ($verbose && $warnings) {
1830  print STDERR "$warnings warnings\n";
1831}
1832
1833exit($errors);
1834
1835sub reset_state {
1836    $function = "";
1837    %constants = ();
1838    %parameterdescs = ();
1839    %parametertypes = ();
1840    @parameterlist = ();
1841    %sections = ();
1842    @sectionlist = ();
1843    $sectcheck = "";
1844    $struct_actual = "";
1845    $prototype = "";
1846
1847    $state = 0;
1848}
1849
1850sub tracepoint_munge($) {
1851	my $file = shift;
1852	my $tracepointname = 0;
1853	my $tracepointargs = 0;
1854
1855	if($prototype =~ m/TRACE_EVENT\((.*?),/) {
1856		$tracepointname = $1;
1857	}
1858	if($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($$) {
1904    my $x = shift;
1905    my $file = shift;
1906
1907    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1908
1909    if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1910	# do nothing
1911    }
1912    elsif ($x =~ /([^\{]*)/) {
1913	$prototype .= $1;
1914    }
1915
1916    if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1917	$prototype =~ s@/\*.*?\*/@@gos;	# strip comments.
1918	$prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1919	$prototype =~ s@^\s+@@gos; # strip leading spaces
1920	if ($prototype =~ /SYSCALL_DEFINE/) {
1921		syscall_munge();
1922	}
1923	if ($prototype =~ /TRACE_EVENT/) {
1924		tracepoint_munge($file);
1925	}
1926	dump_function($prototype, $file);
1927	reset_state();
1928    }
1929}
1930
1931sub process_state3_type($$) {
1932    my $x = shift;
1933    my $file = shift;
1934
1935    $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1936    $x =~ s@^\s+@@gos; # strip leading spaces
1937    $x =~ s@\s+$@@gos; # strip trailing spaces
1938    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1939
1940    if ($x =~ /^#/) {
1941	# To distinguish preprocessor directive from regular declaration later.
1942	$x .= ";";
1943    }
1944
1945    while (1) {
1946	if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
1947	    $prototype .= $1 . $2;
1948	    ($2 eq '{') && $brcount++;
1949	    ($2 eq '}') && $brcount--;
1950	    if (($2 eq ';') && ($brcount == 0)) {
1951		dump_declaration($prototype, $file);
1952		reset_state();
1953		last;
1954	    }
1955	    $x = $3;
1956	} else {
1957	    $prototype .= $x;
1958	    last;
1959	}
1960    }
1961}
1962
1963# xml_escape: replace <, >, and & in the text stream;
1964#
1965# however, formatting controls that are generated internally/locally in the
1966# kernel-doc script are not escaped here; instead, they begin life like
1967# $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
1968# are converted to their mnemonic-expected output, without the 4 * '\' & ':',
1969# just before actual output; (this is done by local_unescape())
1970sub xml_escape($) {
1971	my $text = shift;
1972	if (($output_mode eq "text") || ($output_mode eq "man")) {
1973		return $text;
1974	}
1975	$text =~ s/\&/\\\\\\amp;/g;
1976	$text =~ s/\</\\\\\\lt;/g;
1977	$text =~ s/\>/\\\\\\gt;/g;
1978	return $text;
1979}
1980
1981# convert local escape strings to html
1982# local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
1983sub local_unescape($) {
1984	my $text = shift;
1985	if (($output_mode eq "text") || ($output_mode eq "man")) {
1986		return $text;
1987	}
1988	$text =~ s/\\\\\\\\lt:/</g;
1989	$text =~ s/\\\\\\\\gt:/>/g;
1990	return $text;
1991}
1992
1993sub process_file($) {
1994    my $file;
1995    my $identifier;
1996    my $func;
1997    my $descr;
1998    my $in_purpose = 0;
1999    my $initial_section_counter = $section_counter;
2000
2001    if (defined($ENV{'SRCTREE'})) {
2002	$file = "$ENV{'SRCTREE'}" . "/" . "@_";
2003    }
2004    else {
2005	$file = "@_";
2006    }
2007    if (defined($source_map{$file})) {
2008	$file = $source_map{$file};
2009    }
2010
2011    if (!open(IN,"<$file")) {
2012	print STDERR "Error: Cannot open file $file\n";
2013	++$errors;
2014	return;
2015    }
2016
2017    $section_counter = 0;
2018    while (<IN>) {
2019	if ($state == 0) {
2020	    if (/$doc_start/o) {
2021		$state = 1;		# next line is always the function name
2022		$in_doc_sect = 0;
2023	    }
2024	} elsif ($state == 1) {	# this line is the function name (always)
2025	    if (/$doc_block/o) {
2026		$state = 4;
2027		$contents = "";
2028		if ( $1 eq "" ) {
2029			$section = $section_intro;
2030		} else {
2031			$section = $1;
2032		}
2033	    }
2034	    elsif (/$doc_decl/o) {
2035		$identifier = $1;
2036		if (/\s*([\w\s]+?)\s*-/) {
2037		    $identifier = $1;
2038		}
2039
2040		$state = 2;
2041		if (/-(.*)/) {
2042		    # strip leading/trailing/multiple spaces
2043		    $descr= $1;
2044		    $descr =~ s/^\s*//;
2045		    $descr =~ s/\s*$//;
2046		    $descr =~ s/\s+/ /;
2047		    $declaration_purpose = xml_escape($descr);
2048		    $in_purpose = 1;
2049		} else {
2050		    $declaration_purpose = "";
2051		}
2052
2053		if (($declaration_purpose eq "") && $verbose) {
2054			print STDERR "Warning(${file}:$.): missing initial short description on line:\n";
2055			print STDERR $_;
2056			++$warnings;
2057		}
2058
2059		if ($identifier =~ m/^struct/) {
2060		    $decl_type = 'struct';
2061		} elsif ($identifier =~ m/^union/) {
2062		    $decl_type = 'union';
2063		} elsif ($identifier =~ m/^enum/) {
2064		    $decl_type = 'enum';
2065		} elsif ($identifier =~ m/^typedef/) {
2066		    $decl_type = 'typedef';
2067		} else {
2068		    $decl_type = 'function';
2069		}
2070
2071		if ($verbose) {
2072		    print STDERR "Info(${file}:$.): Scanning doc for $identifier\n";
2073		}
2074	    } else {
2075		print STDERR "Warning(${file}:$.): Cannot understand $_ on line $.",
2076		" - I thought it was a doc line\n";
2077		++$warnings;
2078		$state = 0;
2079	    }
2080	} elsif ($state == 2) {	# look for head: lines, and include content
2081	    if (/$doc_sect/o) {
2082		$newsection = $1;
2083		$newcontents = $2;
2084
2085		if (($contents ne "") && ($contents ne "\n")) {
2086		    if (!$in_doc_sect && $verbose) {
2087			print STDERR "Warning(${file}:$.): contents before sections\n";
2088			++$warnings;
2089		    }
2090		    dump_section($file, $section, xml_escape($contents));
2091		    $section = $section_default;
2092		}
2093
2094		$in_doc_sect = 1;
2095		$in_purpose = 0;
2096		$contents = $newcontents;
2097		if ($contents ne "") {
2098		    while ((substr($contents, 0, 1) eq " ") ||
2099			substr($contents, 0, 1) eq "\t") {
2100			    $contents = substr($contents, 1);
2101		    }
2102		    $contents .= "\n";
2103		}
2104		$section = $newsection;
2105	    } elsif (/$doc_end/) {
2106
2107		if ($contents ne "") {
2108		    dump_section($file, $section, xml_escape($contents));
2109		    $section = $section_default;
2110		    $contents = "";
2111		}
2112		# look for doc_com + <text> + doc_end:
2113		if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2114		    print STDERR "Warning(${file}:$.): suspicious ending line: $_";
2115		    ++$warnings;
2116		}
2117
2118		$prototype = "";
2119		$state = 3;
2120		$brcount = 0;
2121#		print STDERR "end of doc comment, looking for prototype\n";
2122	    } elsif (/$doc_content/) {
2123		# miguel-style comment kludge, look for blank lines after
2124		# @parameter line to signify start of description
2125		if ($1 eq "") {
2126		    if ($section =~ m/^@/ || $section eq $section_context) {
2127			dump_section($file, $section, xml_escape($contents));
2128			$section = $section_default;
2129			$contents = "";
2130		    } else {
2131			$contents .= "\n";
2132		    }
2133		    $in_purpose = 0;
2134		} elsif ($in_purpose == 1) {
2135		    # Continued declaration purpose
2136		    chomp($declaration_purpose);
2137		    $declaration_purpose .= " " . xml_escape($1);
2138		} else {
2139		    $contents .= $1 . "\n";
2140		}
2141	    } else {
2142		# i dont know - bad line?  ignore.
2143		print STDERR "Warning(${file}:$.): bad line: $_";
2144		++$warnings;
2145	    }
2146	} elsif ($state == 3) {	# scanning for function '{' (end of prototype)
2147	    if ($decl_type eq 'function') {
2148		process_state3_function($_, $file);
2149	    } else {
2150		process_state3_type($_, $file);
2151	    }
2152	} elsif ($state == 4) {
2153		# Documentation block
2154		if (/$doc_block/) {
2155			dump_doc_section($file, $section, xml_escape($contents));
2156			$contents = "";
2157			$function = "";
2158			%constants = ();
2159			%parameterdescs = ();
2160			%parametertypes = ();
2161			@parameterlist = ();
2162			%sections = ();
2163			@sectionlist = ();
2164			$prototype = "";
2165			if ( $1 eq "" ) {
2166				$section = $section_intro;
2167			} else {
2168				$section = $1;
2169			}
2170		}
2171		elsif (/$doc_end/)
2172		{
2173			dump_doc_section($file, $section, xml_escape($contents));
2174			$contents = "";
2175			$function = "";
2176			%constants = ();
2177			%parameterdescs = ();
2178			%parametertypes = ();
2179			@parameterlist = ();
2180			%sections = ();
2181			@sectionlist = ();
2182			$prototype = "";
2183			$state = 0;
2184		}
2185		elsif (/$doc_content/)
2186		{
2187			if ( $1 eq "" )
2188			{
2189				$contents .= $blankline;
2190			}
2191			else
2192			{
2193				$contents .= $1 . "\n";
2194			}
2195		}
2196	}
2197    }
2198    if ($initial_section_counter == $section_counter) {
2199	print STDERR "Warning(${file}): no structured comments found\n";
2200	if ($output_mode eq "xml") {
2201	    # The template wants at least one RefEntry here; make one.
2202	    print "<refentry>\n";
2203	    print " <refnamediv>\n";
2204	    print "  <refname>\n";
2205	    print "   ${file}\n";
2206	    print "  </refname>\n";
2207	    print "  <refpurpose>\n";
2208	    print "   Document generation inconsistency\n";
2209	    print "  </refpurpose>\n";
2210	    print " </refnamediv>\n";
2211	    print " <refsect1>\n";
2212	    print "  <title>\n";
2213	    print "   Oops\n";
2214	    print "  </title>\n";
2215	    print "  <warning>\n";
2216	    print "   <para>\n";
2217	    print "    The template for this document tried to insert\n";
2218	    print "    the structured comment from the file\n";
2219	    print "    <filename>${file}</filename> at this point,\n";
2220	    print "    but none was found.\n";
2221	    print "    This dummy section is inserted to allow\n";
2222	    print "    generation to continue.\n";
2223	    print "   </para>\n";
2224	    print "  </warning>\n";
2225	    print " </refsect1>\n";
2226	    print "</refentry>\n";
2227	}
2228    }
2229}
2230