linux/scripts/kernel-doc
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   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) 2005-2012  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 | -list ] [ -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#  The -list format is for internal use by docproc.
  54#
  55#  -no-doc-sections
  56#       Do not output DOC: sections
  57#
  58#  -function funcname
  59#       If set, then only generate documentation for the given function(s) or
  60#       DOC: section titles.  All other functions and DOC: sections are ignored.
  61#
  62#  -nofunction funcname
  63#       If set, then only generate documentation for the other function(s)/DOC:
  64#       sections. Cannot be used together with -function (yes, that's a bug --
  65#       perl hackers can fix it 8))
  66#
  67#  c files - list of 'c' files to process
  68#
  69#  All output goes to stdout, with errors to stderr.
  70
  71#
  72# format of comments.
  73# In the following table, (...)? signifies optional structure.
  74#                         (...)* signifies 0 or more structure elements
  75# /**
  76#  * function_name(:)? (- short description)?
  77# (* @parameterx: (description of parameter x)?)*
  78# (* a blank line)?
  79#  * (Description:)? (Description of function)?
  80#  * (section header: (section description)? )*
  81#  (*)?*/
  82#
  83# So .. the trivial example would be:
  84#
  85# /**
  86#  * my_function
  87#  */
  88#
  89# If the Description: header tag is omitted, then there must be a blank line
  90# after the last parameter specification.
  91# e.g.
  92# /**
  93#  * my_function - does my stuff
  94#  * @my_arg: its mine damnit
  95#  *
  96#  * Does my stuff explained.
  97#  */
  98#
  99#  or, could also use:
 100# /**
 101#  * my_function - does my stuff
 102#  * @my_arg: its mine damnit
 103#  * Description: Does my stuff explained.
 104#  */
 105# etc.
 106#
 107# Besides functions you can also write documentation for structs, unions,
 108# enums and typedefs. Instead of the function name you must write the name
 109# of the declaration;  the struct/union/enum/typedef must always precede
 110# the name. Nesting of declarations is not supported.
 111# Use the argument mechanism to document members or constants.
 112# e.g.
 113# /**
 114#  * struct my_struct - short description
 115#  * @a: first member
 116#  * @b: second member
 117#  *
 118#  * Longer description
 119#  */
 120# struct my_struct {
 121#     int a;
 122#     int b;
 123# /* private: */
 124#     int c;
 125# };
 126#
 127# All descriptions can be multiline, except the short function description.
 128#
 129# You can also add additional sections. When documenting kernel functions you
 130# should document the "Context:" of the function, e.g. whether the functions
 131# can be called form interrupts. Unlike other sections you can end it with an
 132# empty line.
 133# Example-sections should contain the string EXAMPLE so that they are marked
 134# appropriately in DocBook.
 135#
 136# Example:
 137# /**
 138#  * user_function - function that can only be called in user context
 139#  * @a: some argument
 140#  * Context: !in_interrupt()
 141#  *
 142#  * Some description
 143#  * Example:
 144#  *    user_function(22);
 145#  */
 146# ...
 147#
 148#
 149# All descriptive text is further processed, scanning for the following special
 150# patterns, which are highlighted appropriately.
 151#
 152# 'funcname()' - function
 153# '$ENVVAR' - environmental variable
 154# '&struct_name' - name of a structure (up to two words including 'struct')
 155# '@parameter' - name of a parameter
 156# '%CONST' - name of a constant.
 157
 158## init lots of data
 159
 160my $errors = 0;
 161my $warnings = 0;
 162my $anon_struct_union = 0;
 163
 164# match expressions used to find embedded type information
 165my $type_constant = '\%([-_\w]+)';
 166my $type_func = '(\w+)\(\)';
 167my $type_param = '\@(\w+)';
 168my $type_struct = '\&((struct\s*)*[_\w]+)';
 169my $type_struct_xml = '\\&amp;((struct\s*)*[_\w]+)';
 170my $type_env = '(\$\w+)';
 171
 172# Output conversion substitutions.
 173#  One for each output format
 174
 175# these work fairly well
 176my %highlights_html = ( $type_constant, "<i>\$1</i>",
 177                        $type_func, "<b>\$1</b>",
 178                        $type_struct_xml, "<i>\$1</i>",
 179                        $type_env, "<b><i>\$1</i></b>",
 180                        $type_param, "<tt><b>\$1</b></tt>" );
 181my $local_lt = "\\\\\\\\lt:";
 182my $local_gt = "\\\\\\\\gt:";
 183my $blankline_html = $local_lt . "p" . $local_gt;       # was "<p>"
 184
 185# XML, docbook format
 186my %highlights_xml = ( "([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>",
 187                        $type_constant, "<constant>\$1</constant>",
 188                        $type_func, "<function>\$1</function>",
 189                        $type_struct_xml, "<structname>\$1</structname>",
 190                        $type_env, "<envar>\$1</envar>",
 191                        $type_param, "<parameter>\$1</parameter>" );
 192my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n";
 193
 194# gnome, docbook format
 195my %highlights_gnome = ( $type_constant, "<replaceable class=\"option\">\$1</replaceable>",
 196                         $type_func, "<function>\$1</function>",
 197                         $type_struct, "<structname>\$1</structname>",
 198                         $type_env, "<envar>\$1</envar>",
 199                         $type_param, "<parameter>\$1</parameter>" );
 200my $blankline_gnome = "</para><para>\n";
 201
 202# these are pretty rough
 203my %highlights_man = ( $type_constant, "\$1",
 204                       $type_func, "\\\\fB\$1\\\\fP",
 205                       $type_struct, "\\\\fI\$1\\\\fP",
 206                       $type_param, "\\\\fI\$1\\\\fP" );
 207my $blankline_man = "";
 208
 209# text-mode
 210my %highlights_text = ( $type_constant, "\$1",
 211                        $type_func, "\$1",
 212                        $type_struct, "\$1",
 213                        $type_param, "\$1" );
 214my $blankline_text = "";
 215
 216# list mode
 217my %highlights_list = ( $type_constant, "\$1",
 218                        $type_func, "\$1",
 219                        $type_struct, "\$1",
 220                        $type_param, "\$1" );
 221my $blankline_list = "";
 222
 223# read arguments
 224if ($#ARGV == -1) {
 225    usage();
 226}
 227
 228my $kernelversion;
 229my $dohighlight = "";
 230
 231my $verbose = 0;
 232my $output_mode = "man";
 233my $no_doc_sections = 0;
 234my %highlights = %highlights_man;
 235my $blankline = $blankline_man;
 236my $modulename = "Kernel API";
 237my $function_only = 0;
 238my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
 239                'July', 'August', 'September', 'October',
 240                'November', 'December')[(localtime)[4]] .
 241  " " . ((localtime)[5]+1900);
 242
 243# Essentially these are globals.
 244# They probably want to be tidied up, made more localised or something.
 245# CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
 246# could cause "use of undefined value" or other bugs.
 247my ($function, %function_table, %parametertypes, $declaration_purpose);
 248my ($type, $declaration_name, $return_type);
 249my ($newsection, $newcontents, $prototype, $brcount, %source_map);
 250
 251if (defined($ENV{'KBUILD_VERBOSE'})) {
 252        $verbose = "$ENV{'KBUILD_VERBOSE'}";
 253}
 254
 255# Generated docbook code is inserted in a template at a point where
 256# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
 257# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
 258# We keep track of number of generated entries and generate a dummy
 259# if needs be to ensure the expanded template can be postprocessed
 260# into html.
 261my $section_counter = 0;
 262
 263my $lineprefix="";
 264
 265# states
 266# 0 - normal code
 267# 1 - looking for function name
 268# 2 - scanning field start.
 269# 3 - scanning prototype.
 270# 4 - documentation block
 271my $state;
 272my $in_doc_sect;
 273
 274#declaration types: can be
 275# 'function', 'struct', 'union', 'enum', 'typedef'
 276my $decl_type;
 277
 278my $doc_special = "\@\%\$\&";
 279
 280my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
 281my $doc_end = '\*/';
 282my $doc_com = '\s*\*\s*';
 283my $doc_decl = $doc_com . '(\w+)';
 284my $doc_sect = $doc_com . '([' . $doc_special . ']?[\w\s]+):(.*)';
 285my $doc_content = $doc_com . '(.*)';
 286my $doc_block = $doc_com . 'DOC:\s*(.*)?';
 287
 288my %constants;
 289my %parameterdescs;
 290my @parameterlist;
 291my %sections;
 292my @sectionlist;
 293my $sectcheck;
 294my $struct_actual;
 295
 296my $contents = "";
 297my $section_default = "Description";    # default section
 298my $section_intro = "Introduction";
 299my $section = $section_default;
 300my $section_context = "Context";
 301
 302my $undescribed = "-- undescribed --";
 303
 304reset_state();
 305
 306while ($ARGV[0] =~ m/^-(.*)/) {
 307    my $cmd = shift @ARGV;
 308    if ($cmd eq "-html") {
 309        $output_mode = "html";
 310        %highlights = %highlights_html;
 311        $blankline = $blankline_html;
 312    } elsif ($cmd eq "-man") {
 313        $output_mode = "man";
 314        %highlights = %highlights_man;
 315        $blankline = $blankline_man;
 316    } elsif ($cmd eq "-text") {
 317        $output_mode = "text";
 318        %highlights = %highlights_text;
 319        $blankline = $blankline_text;
 320    } elsif ($cmd eq "-docbook") {
 321        $output_mode = "xml";
 322        %highlights = %highlights_xml;
 323        $blankline = $blankline_xml;
 324    } elsif ($cmd eq "-list") {
 325        $output_mode = "list";
 326        %highlights = %highlights_list;
 327        $blankline = $blankline_list;
 328    } elsif ($cmd eq "-gnome") {
 329        $output_mode = "gnome";
 330        %highlights = %highlights_gnome;
 331        $blankline = $blankline_gnome;
 332    } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
 333        $modulename = shift @ARGV;
 334    } elsif ($cmd eq "-function") { # to only output specific functions
 335        $function_only = 1;
 336        $function = shift @ARGV;
 337        $function_table{$function} = 1;
 338    } elsif ($cmd eq "-nofunction") { # to only output specific functions
 339        $function_only = 2;
 340        $function = shift @ARGV;
 341        $function_table{$function} = 1;
 342    } elsif ($cmd eq "-v") {
 343        $verbose = 1;
 344    } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
 345        usage();
 346    } elsif ($cmd eq '-no-doc-sections') {
 347            $no_doc_sections = 1;
 348    }
 349}
 350
 351# continue execution near EOF;
 352
 353sub usage {
 354    print "Usage: $0 [ -v ] [ -docbook | -html | -text | -man | -list ]\n";
 355    print "         [ -no-doc-sections ]\n";
 356    print "         [ -function funcname [ -function funcname ...] ]\n";
 357    print "         [ -nofunction funcname [ -nofunction funcname ...] ]\n";
 358    print "         c source file(s) > outputfile\n";
 359    print "         -v : verbose output, more warnings & other info listed\n";
 360    exit 1;
 361}
 362
 363# get kernel version from env
 364sub get_kernel_version() {
 365    my $version = 'unknown kernel version';
 366
 367    if (defined($ENV{'KERNELVERSION'})) {
 368        $version = $ENV{'KERNELVERSION'};
 369    }
 370    return $version;
 371}
 372
 373##
 374# dumps section contents to arrays/hashes intended for that purpose.
 375#
 376sub dump_section {
 377    my $file = shift;
 378    my $name = shift;
 379    my $contents = join "\n", @_;
 380
 381    if ($name =~ m/$type_constant/) {
 382        $name = $1;
 383#       print STDERR "constant section '$1' = '$contents'\n";
 384        $constants{$name} = $contents;
 385    } elsif ($name =~ m/$type_param/) {
 386#       print STDERR "parameter def '$1' = '$contents'\n";
 387        $name = $1;
 388        $parameterdescs{$name} = $contents;
 389        $sectcheck = $sectcheck . $name . " ";
 390    } elsif ($name eq "@\.\.\.") {
 391#       print STDERR "parameter def '...' = '$contents'\n";
 392        $name = "...";
 393        $parameterdescs{$name} = $contents;
 394        $sectcheck = $sectcheck . $name . " ";
 395    } else {
 396#       print STDERR "other section '$name' = '$contents'\n";
 397        if (defined($sections{$name}) && ($sections{$name} ne "")) {
 398                print STDERR "Error(${file}:$.): duplicate section name '$name'\n";
 399                ++$errors;
 400        }
 401        $sections{$name} = $contents;
 402        push @sectionlist, $name;
 403    }
 404}
 405
 406##
 407# dump DOC: section after checking that it should go out
 408#
 409sub dump_doc_section {
 410    my $file = shift;
 411    my $name = shift;
 412    my $contents = join "\n", @_;
 413
 414    if ($no_doc_sections) {
 415        return;
 416    }
 417
 418    if (($function_only == 0) ||
 419        ( $function_only == 1 && defined($function_table{$name})) ||
 420        ( $function_only == 2 && !defined($function_table{$name})))
 421    {
 422        dump_section($file, $name, $contents);
 423        output_blockhead({'sectionlist' => \@sectionlist,
 424                          'sections' => \%sections,
 425                          'module' => $modulename,
 426                          'content-only' => ($function_only != 0), });
 427    }
 428}
 429
 430##
 431# output function
 432#
 433# parameterdescs, a hash.
 434#  function => "function name"
 435#  parameterlist => @list of parameters
 436#  parameterdescs => %parameter descriptions
 437#  sectionlist => @list of sections
 438#  sections => %section descriptions
 439#
 440
 441sub output_highlight {
 442    my $contents = join "\n",@_;
 443    my $line;
 444
 445#   DEBUG
 446#   if (!defined $contents) {
 447#       use Carp;
 448#       confess "output_highlight got called with no args?\n";
 449#   }
 450
 451    if ($output_mode eq "html" || $output_mode eq "xml") {
 452        $contents = local_unescape($contents);
 453        # convert data read & converted thru xml_escape() into &xyz; format:
 454        $contents =~ s/\\\\\\/\&/g;
 455    }
 456#   print STDERR "contents b4:$contents\n";
 457    eval $dohighlight;
 458    die $@ if $@;
 459#   print STDERR "contents af:$contents\n";
 460
 461    foreach $line (split "\n", $contents) {
 462        if ($line eq ""){
 463            print $lineprefix, local_unescape($blankline);
 464        } else {
 465            $line =~ s/\\\\\\/\&/g;
 466            if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
 467                print "\\&$line";
 468            } else {
 469                print $lineprefix, $line;
 470            }
 471        }
 472        print "\n";
 473    }
 474}
 475
 476#output sections in html
 477sub output_section_html(%) {
 478    my %args = %{$_[0]};
 479    my $section;
 480
 481    foreach $section (@{$args{'sectionlist'}}) {
 482        print "<h3>$section</h3>\n";
 483        print "<blockquote>\n";
 484        output_highlight($args{'sections'}{$section});
 485        print "</blockquote>\n";
 486    }
 487}
 488
 489# output enum in html
 490sub output_enum_html(%) {
 491    my %args = %{$_[0]};
 492    my ($parameter);
 493    my $count;
 494    print "<h2>enum " . $args{'enum'} . "</h2>\n";
 495
 496    print "<b>enum " . $args{'enum'} . "</b> {<br>\n";
 497    $count = 0;
 498    foreach $parameter (@{$args{'parameterlist'}}) {
 499        print " <b>" . $parameter . "</b>";
 500        if ($count != $#{$args{'parameterlist'}}) {
 501            $count++;
 502            print ",\n";
 503        }
 504        print "<br>";
 505    }
 506    print "};<br>\n";
 507
 508    print "<h3>Constants</h3>\n";
 509    print "<dl>\n";
 510    foreach $parameter (@{$args{'parameterlist'}}) {
 511        print "<dt><b>" . $parameter . "</b>\n";
 512        print "<dd>";
 513        output_highlight($args{'parameterdescs'}{$parameter});
 514    }
 515    print "</dl>\n";
 516    output_section_html(@_);
 517    print "<hr>\n";
 518}
 519
 520# output typedef in html
 521sub output_typedef_html(%) {
 522    my %args = %{$_[0]};
 523    my ($parameter);
 524    my $count;
 525    print "<h2>typedef " . $args{'typedef'} . "</h2>\n";
 526
 527    print "<b>typedef " . $args{'typedef'} . "</b>\n";
 528    output_section_html(@_);
 529    print "<hr>\n";
 530}
 531
 532# output struct in html
 533sub output_struct_html(%) {
 534    my %args = %{$_[0]};
 535    my ($parameter);
 536
 537    print "<h2>" . $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "</h2>\n";
 538    print "<b>" . $args{'type'} . " " . $args{'struct'} . "</b> {<br>\n";
 539    foreach $parameter (@{$args{'parameterlist'}}) {
 540        if ($parameter =~ /^#/) {
 541                print "$parameter<br>\n";
 542                next;
 543        }
 544        my $parameter_name = $parameter;
 545        $parameter_name =~ s/\[.*//;
 546
 547        ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 548        $type = $args{'parametertypes'}{$parameter};
 549        if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 550            # pointer-to-function
 551            print "&nbsp; &nbsp; <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
 552        } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
 553            # bitfield
 554            print "&nbsp; &nbsp; <i>$1</i> <b>$parameter</b>$2;<br>\n";
 555        } else {
 556            print "&nbsp; &nbsp; <i>$type</i> <b>$parameter</b>;<br>\n";
 557        }
 558    }
 559    print "};<br>\n";
 560
 561    print "<h3>Members</h3>\n";
 562    print "<dl>\n";
 563    foreach $parameter (@{$args{'parameterlist'}}) {
 564        ($parameter =~ /^#/) && next;
 565
 566        my $parameter_name = $parameter;
 567        $parameter_name =~ s/\[.*//;
 568
 569        ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 570        print "<dt><b>" . $parameter . "</b>\n";
 571        print "<dd>";
 572        output_highlight($args{'parameterdescs'}{$parameter_name});
 573    }
 574    print "</dl>\n";
 575    output_section_html(@_);
 576    print "<hr>\n";
 577}
 578
 579# output function in html
 580sub output_function_html(%) {
 581    my %args = %{$_[0]};
 582    my ($parameter, $section);
 583    my $count;
 584
 585    print "<h2>" . $args{'function'} . " - " . $args{'purpose'} . "</h2>\n";
 586    print "<i>" . $args{'functiontype'} . "</i>\n";
 587    print "<b>" . $args{'function'} . "</b>\n";
 588    print "(";
 589    $count = 0;
 590    foreach $parameter (@{$args{'parameterlist'}}) {
 591        $type = $args{'parametertypes'}{$parameter};
 592        if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 593            # pointer-to-function
 594            print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
 595        } else {
 596            print "<i>" . $type . "</i> <b>" . $parameter . "</b>";
 597        }
 598        if ($count != $#{$args{'parameterlist'}}) {
 599            $count++;
 600            print ",\n";
 601        }
 602    }
 603    print ")\n";
 604
 605    print "<h3>Arguments</h3>\n";
 606    print "<dl>\n";
 607    foreach $parameter (@{$args{'parameterlist'}}) {
 608        my $parameter_name = $parameter;
 609        $parameter_name =~ s/\[.*//;
 610
 611        ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 612        print "<dt><b>" . $parameter . "</b>\n";
 613        print "<dd>";
 614        output_highlight($args{'parameterdescs'}{$parameter_name});
 615    }
 616    print "</dl>\n";
 617    output_section_html(@_);
 618    print "<hr>\n";
 619}
 620
 621# output DOC: block header in html
 622sub output_blockhead_html(%) {
 623    my %args = %{$_[0]};
 624    my ($parameter, $section);
 625    my $count;
 626
 627    foreach $section (@{$args{'sectionlist'}}) {
 628        print "<h3>$section</h3>\n";
 629        print "<ul>\n";
 630        output_highlight($args{'sections'}{$section});
 631        print "</ul>\n";
 632    }
 633    print "<hr>\n";
 634}
 635
 636sub output_section_xml(%) {
 637    my %args = %{$_[0]};
 638    my $section;
 639    # print out each section
 640    $lineprefix="   ";
 641    foreach $section (@{$args{'sectionlist'}}) {
 642        print "<refsect1>\n";
 643        print "<title>$section</title>\n";
 644        if ($section =~ m/EXAMPLE/i) {
 645            print "<informalexample><programlisting>\n";
 646        } else {
 647            print "<para>\n";
 648        }
 649        output_highlight($args{'sections'}{$section});
 650        if ($section =~ m/EXAMPLE/i) {
 651            print "</programlisting></informalexample>\n";
 652        } else {
 653            print "</para>\n";
 654        }
 655        print "</refsect1>\n";
 656    }
 657}
 658
 659# output function in XML DocBook
 660sub output_function_xml(%) {
 661    my %args = %{$_[0]};
 662    my ($parameter, $section);
 663    my $count;
 664    my $id;
 665
 666    $id = "API-" . $args{'function'};
 667    $id =~ s/[^A-Za-z0-9]/-/g;
 668
 669    print "<refentry id=\"$id\">\n";
 670    print "<refentryinfo>\n";
 671    print " <title>LINUX</title>\n";
 672    print " <productname>Kernel Hackers Manual</productname>\n";
 673    print " <date>$man_date</date>\n";
 674    print "</refentryinfo>\n";
 675    print "<refmeta>\n";
 676    print " <refentrytitle><phrase>" . $args{'function'} . "</phrase></refentrytitle>\n";
 677    print " <manvolnum>9</manvolnum>\n";
 678    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 679    print "</refmeta>\n";
 680    print "<refnamediv>\n";
 681    print " <refname>" . $args{'function'} . "</refname>\n";
 682    print " <refpurpose>\n";
 683    print "  ";
 684    output_highlight ($args{'purpose'});
 685    print " </refpurpose>\n";
 686    print "</refnamediv>\n";
 687
 688    print "<refsynopsisdiv>\n";
 689    print " <title>Synopsis</title>\n";
 690    print "  <funcsynopsis><funcprototype>\n";
 691    print "   <funcdef>" . $args{'functiontype'} . " ";
 692    print "<function>" . $args{'function'} . " </function></funcdef>\n";
 693
 694    $count = 0;
 695    if ($#{$args{'parameterlist'}} >= 0) {
 696        foreach $parameter (@{$args{'parameterlist'}}) {
 697            $type = $args{'parametertypes'}{$parameter};
 698            if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 699                # pointer-to-function
 700                print "   <paramdef>$1<parameter>$parameter</parameter>)\n";
 701                print "     <funcparams>$2</funcparams></paramdef>\n";
 702            } else {
 703                print "   <paramdef>" . $type;
 704                print " <parameter>$parameter</parameter></paramdef>\n";
 705            }
 706        }
 707    } else {
 708        print "  <void/>\n";
 709    }
 710    print "  </funcprototype></funcsynopsis>\n";
 711    print "</refsynopsisdiv>\n";
 712
 713    # print parameters
 714    print "<refsect1>\n <title>Arguments</title>\n";
 715    if ($#{$args{'parameterlist'}} >= 0) {
 716        print " <variablelist>\n";
 717        foreach $parameter (@{$args{'parameterlist'}}) {
 718            my $parameter_name = $parameter;
 719            $parameter_name =~ s/\[.*//;
 720
 721            print "  <varlistentry>\n   <term><parameter>$parameter</parameter></term>\n";
 722            print "   <listitem>\n    <para>\n";
 723            $lineprefix="     ";
 724            output_highlight($args{'parameterdescs'}{$parameter_name});
 725            print "    </para>\n   </listitem>\n  </varlistentry>\n";
 726        }
 727        print " </variablelist>\n";
 728    } else {
 729        print " <para>\n  None\n </para>\n";
 730    }
 731    print "</refsect1>\n";
 732
 733    output_section_xml(@_);
 734    print "</refentry>\n\n";
 735}
 736
 737# output struct in XML DocBook
 738sub output_struct_xml(%) {
 739    my %args = %{$_[0]};
 740    my ($parameter, $section);
 741    my $id;
 742
 743    $id = "API-struct-" . $args{'struct'};
 744    $id =~ s/[^A-Za-z0-9]/-/g;
 745
 746    print "<refentry id=\"$id\">\n";
 747    print "<refentryinfo>\n";
 748    print " <title>LINUX</title>\n";
 749    print " <productname>Kernel Hackers Manual</productname>\n";
 750    print " <date>$man_date</date>\n";
 751    print "</refentryinfo>\n";
 752    print "<refmeta>\n";
 753    print " <refentrytitle><phrase>" . $args{'type'} . " " . $args{'struct'} . "</phrase></refentrytitle>\n";
 754    print " <manvolnum>9</manvolnum>\n";
 755    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 756    print "</refmeta>\n";
 757    print "<refnamediv>\n";
 758    print " <refname>" . $args{'type'} . " " . $args{'struct'} . "</refname>\n";
 759    print " <refpurpose>\n";
 760    print "  ";
 761    output_highlight ($args{'purpose'});
 762    print " </refpurpose>\n";
 763    print "</refnamediv>\n";
 764
 765    print "<refsynopsisdiv>\n";
 766    print " <title>Synopsis</title>\n";
 767    print "  <programlisting>\n";
 768    print $args{'type'} . " " . $args{'struct'} . " {\n";
 769    foreach $parameter (@{$args{'parameterlist'}}) {
 770        if ($parameter =~ /^#/) {
 771            my $prm = $parameter;
 772            # convert data read & converted thru xml_escape() into &xyz; format:
 773            # This allows us to have #define macros interspersed in a struct.
 774            $prm =~ s/\\\\\\/\&/g;
 775            print "$prm\n";
 776            next;
 777        }
 778
 779        my $parameter_name = $parameter;
 780        $parameter_name =~ s/\[.*//;
 781
 782        defined($args{'parameterdescs'}{$parameter_name}) || next;
 783        ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 784        $type = $args{'parametertypes'}{$parameter};
 785        if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 786            # pointer-to-function
 787            print "  $1 $parameter) ($2);\n";
 788        } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
 789            # bitfield
 790            print "  $1 $parameter$2;\n";
 791        } else {
 792            print "  " . $type . " " . $parameter . ";\n";
 793        }
 794    }
 795    print "};";
 796    print "  </programlisting>\n";
 797    print "</refsynopsisdiv>\n";
 798
 799    print " <refsect1>\n";
 800    print "  <title>Members</title>\n";
 801
 802    if ($#{$args{'parameterlist'}} >= 0) {
 803    print "  <variablelist>\n";
 804    foreach $parameter (@{$args{'parameterlist'}}) {
 805      ($parameter =~ /^#/) && next;
 806
 807      my $parameter_name = $parameter;
 808      $parameter_name =~ s/\[.*//;
 809
 810      defined($args{'parameterdescs'}{$parameter_name}) || next;
 811      ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 812      print "    <varlistentry>";
 813      print "      <term>$parameter</term>\n";
 814      print "      <listitem><para>\n";
 815      output_highlight($args{'parameterdescs'}{$parameter_name});
 816      print "      </para></listitem>\n";
 817      print "    </varlistentry>\n";
 818    }
 819    print "  </variablelist>\n";
 820    } else {
 821        print " <para>\n  None\n </para>\n";
 822    }
 823    print " </refsect1>\n";
 824
 825    output_section_xml(@_);
 826
 827    print "</refentry>\n\n";
 828}
 829
 830# output enum in XML DocBook
 831sub output_enum_xml(%) {
 832    my %args = %{$_[0]};
 833    my ($parameter, $section);
 834    my $count;
 835    my $id;
 836
 837    $id = "API-enum-" . $args{'enum'};
 838    $id =~ s/[^A-Za-z0-9]/-/g;
 839
 840    print "<refentry id=\"$id\">\n";
 841    print "<refentryinfo>\n";
 842    print " <title>LINUX</title>\n";
 843    print " <productname>Kernel Hackers Manual</productname>\n";
 844    print " <date>$man_date</date>\n";
 845    print "</refentryinfo>\n";
 846    print "<refmeta>\n";
 847    print " <refentrytitle><phrase>enum " . $args{'enum'} . "</phrase></refentrytitle>\n";
 848    print " <manvolnum>9</manvolnum>\n";
 849    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 850    print "</refmeta>\n";
 851    print "<refnamediv>\n";
 852    print " <refname>enum " . $args{'enum'} . "</refname>\n";
 853    print " <refpurpose>\n";
 854    print "  ";
 855    output_highlight ($args{'purpose'});
 856    print " </refpurpose>\n";
 857    print "</refnamediv>\n";
 858
 859    print "<refsynopsisdiv>\n";
 860    print " <title>Synopsis</title>\n";
 861    print "  <programlisting>\n";
 862    print "enum " . $args{'enum'} . " {\n";
 863    $count = 0;
 864    foreach $parameter (@{$args{'parameterlist'}}) {
 865        print "  $parameter";
 866        if ($count != $#{$args{'parameterlist'}}) {
 867            $count++;
 868            print ",";
 869        }
 870        print "\n";
 871    }
 872    print "};";
 873    print "  </programlisting>\n";
 874    print "</refsynopsisdiv>\n";
 875
 876    print "<refsect1>\n";
 877    print " <title>Constants</title>\n";
 878    print "  <variablelist>\n";
 879    foreach $parameter (@{$args{'parameterlist'}}) {
 880      my $parameter_name = $parameter;
 881      $parameter_name =~ s/\[.*//;
 882
 883      print "    <varlistentry>";
 884      print "      <term>$parameter</term>\n";
 885      print "      <listitem><para>\n";
 886      output_highlight($args{'parameterdescs'}{$parameter_name});
 887      print "      </para></listitem>\n";
 888      print "    </varlistentry>\n";
 889    }
 890    print "  </variablelist>\n";
 891    print "</refsect1>\n";
 892
 893    output_section_xml(@_);
 894
 895    print "</refentry>\n\n";
 896}
 897
 898# output typedef in XML DocBook
 899sub output_typedef_xml(%) {
 900    my %args = %{$_[0]};
 901    my ($parameter, $section);
 902    my $id;
 903
 904    $id = "API-typedef-" . $args{'typedef'};
 905    $id =~ s/[^A-Za-z0-9]/-/g;
 906
 907    print "<refentry id=\"$id\">\n";
 908    print "<refentryinfo>\n";
 909    print " <title>LINUX</title>\n";
 910    print " <productname>Kernel Hackers Manual</productname>\n";
 911    print " <date>$man_date</date>\n";
 912    print "</refentryinfo>\n";
 913    print "<refmeta>\n";
 914    print " <refentrytitle><phrase>typedef " . $args{'typedef'} . "</phrase></refentrytitle>\n";
 915    print " <manvolnum>9</manvolnum>\n";
 916    print "</refmeta>\n";
 917    print "<refnamediv>\n";
 918    print " <refname>typedef " . $args{'typedef'} . "</refname>\n";
 919    print " <refpurpose>\n";
 920    print "  ";
 921    output_highlight ($args{'purpose'});
 922    print " </refpurpose>\n";
 923    print "</refnamediv>\n";
 924
 925    print "<refsynopsisdiv>\n";
 926    print " <title>Synopsis</title>\n";
 927    print "  <synopsis>typedef " . $args{'typedef'} . ";</synopsis>\n";
 928    print "</refsynopsisdiv>\n";
 929
 930    output_section_xml(@_);
 931
 932    print "</refentry>\n\n";
 933}
 934
 935# output in XML DocBook
 936sub output_blockhead_xml(%) {
 937    my %args = %{$_[0]};
 938    my ($parameter, $section);
 939    my $count;
 940
 941    my $id = $args{'module'};
 942    $id =~ s/[^A-Za-z0-9]/-/g;
 943
 944    # print out each section
 945    $lineprefix="   ";
 946    foreach $section (@{$args{'sectionlist'}}) {
 947        if (!$args{'content-only'}) {
 948                print "<refsect1>\n <title>$section</title>\n";
 949        }
 950        if ($section =~ m/EXAMPLE/i) {
 951            print "<example><para>\n";
 952        } else {
 953            print "<para>\n";
 954        }
 955        output_highlight($args{'sections'}{$section});
 956        if ($section =~ m/EXAMPLE/i) {
 957            print "</para></example>\n";
 958        } else {
 959            print "</para>";
 960        }
 961        if (!$args{'content-only'}) {
 962                print "\n</refsect1>\n";
 963        }
 964    }
 965
 966    print "\n\n";
 967}
 968
 969# output in XML DocBook
 970sub output_function_gnome {
 971    my %args = %{$_[0]};
 972    my ($parameter, $section);
 973    my $count;
 974    my $id;
 975
 976    $id = $args{'module'} . "-" . $args{'function'};
 977    $id =~ s/[^A-Za-z0-9]/-/g;
 978
 979    print "<sect2>\n";
 980    print " <title id=\"$id\">" . $args{'function'} . "</title>\n";
 981
 982    print "  <funcsynopsis>\n";
 983    print "   <funcdef>" . $args{'functiontype'} . " ";
 984    print "<function>" . $args{'function'} . " ";
 985    print "</function></funcdef>\n";
 986
 987    $count = 0;
 988    if ($#{$args{'parameterlist'}} >= 0) {
 989        foreach $parameter (@{$args{'parameterlist'}}) {
 990            $type = $args{'parametertypes'}{$parameter};
 991            if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 992                # pointer-to-function
 993                print "   <paramdef>$1 <parameter>$parameter</parameter>)\n";
 994                print "     <funcparams>$2</funcparams></paramdef>\n";
 995            } else {
 996                print "   <paramdef>" . $type;
 997                print " <parameter>$parameter</parameter></paramdef>\n";
 998            }
 999        }
1000    } else {
1001        print "  <void>\n";
1002    }
1003    print "  </funcsynopsis>\n";
1004    if ($#{$args{'parameterlist'}} >= 0) {
1005        print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
1006        print "<tgroup cols=\"2\">\n";
1007        print "<colspec colwidth=\"2*\">\n";
1008        print "<colspec colwidth=\"8*\">\n";
1009        print "<tbody>\n";
1010        foreach $parameter (@{$args{'parameterlist'}}) {
1011            my $parameter_name = $parameter;
1012            $parameter_name =~ s/\[.*//;
1013
1014            print "  <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
1015            print "   <entry>\n";
1016            $lineprefix="     ";
1017            output_highlight($args{'parameterdescs'}{$parameter_name});
1018            print "    </entry></row>\n";
1019        }
1020        print " </tbody></tgroup></informaltable>\n";
1021    } else {
1022        print " <para>\n  None\n </para>\n";
1023    }
1024
1025    # print out each section
1026    $lineprefix="   ";
1027    foreach $section (@{$args{'sectionlist'}}) {
1028        print "<simplesect>\n <title>$section</title>\n";
1029        if ($section =~ m/EXAMPLE/i) {
1030            print "<example><programlisting>\n";
1031        } else {
1032        }
1033        print "<para>\n";
1034        output_highlight($args{'sections'}{$section});
1035        print "</para>\n";
1036        if ($section =~ m/EXAMPLE/i) {
1037            print "</programlisting></example>\n";
1038        } else {
1039        }
1040        print " </simplesect>\n";
1041    }
1042
1043    print "</sect2>\n\n";
1044}
1045
1046##
1047# output function in man
1048sub output_function_man(%) {
1049    my %args = %{$_[0]};
1050    my ($parameter, $section);
1051    my $count;
1052
1053    print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
1054
1055    print ".SH NAME\n";
1056    print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
1057
1058    print ".SH SYNOPSIS\n";
1059    if ($args{'functiontype'} ne "") {
1060        print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
1061    } else {
1062        print ".B \"" . $args{'function'} . "\n";
1063    }
1064    $count = 0;
1065    my $parenth = "(";
1066    my $post = ",";
1067    foreach my $parameter (@{$args{'parameterlist'}}) {
1068        if ($count == $#{$args{'parameterlist'}}) {
1069            $post = ");";
1070        }
1071        $type = $args{'parametertypes'}{$parameter};
1072        if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1073            # pointer-to-function
1074            print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
1075        } else {
1076            $type =~ s/([^\*])$/$1 /;
1077            print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
1078        }
1079        $count++;
1080        $parenth = "";
1081    }
1082
1083    print ".SH ARGUMENTS\n";
1084    foreach $parameter (@{$args{'parameterlist'}}) {
1085        my $parameter_name = $parameter;
1086        $parameter_name =~ s/\[.*//;
1087
1088        print ".IP \"" . $parameter . "\" 12\n";
1089        output_highlight($args{'parameterdescs'}{$parameter_name});
1090    }
1091    foreach $section (@{$args{'sectionlist'}}) {
1092        print ".SH \"", uc $section, "\"\n";
1093        output_highlight($args{'sections'}{$section});
1094    }
1095}
1096
1097##
1098# output enum in man
1099sub output_enum_man(%) {
1100    my %args = %{$_[0]};
1101    my ($parameter, $section);
1102    my $count;
1103
1104    print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
1105
1106    print ".SH NAME\n";
1107    print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
1108
1109    print ".SH SYNOPSIS\n";
1110    print "enum " . $args{'enum'} . " {\n";
1111    $count = 0;
1112    foreach my $parameter (@{$args{'parameterlist'}}) {
1113        print ".br\n.BI \"    $parameter\"\n";
1114        if ($count == $#{$args{'parameterlist'}}) {
1115            print "\n};\n";
1116            last;
1117        }
1118        else {
1119            print ", \n.br\n";
1120        }
1121        $count++;
1122    }
1123
1124    print ".SH Constants\n";
1125    foreach $parameter (@{$args{'parameterlist'}}) {
1126        my $parameter_name = $parameter;
1127        $parameter_name =~ s/\[.*//;
1128
1129        print ".IP \"" . $parameter . "\" 12\n";
1130        output_highlight($args{'parameterdescs'}{$parameter_name});
1131    }
1132    foreach $section (@{$args{'sectionlist'}}) {
1133        print ".SH \"$section\"\n";
1134        output_highlight($args{'sections'}{$section});
1135    }
1136}
1137
1138##
1139# output struct in man
1140sub output_struct_man(%) {
1141    my %args = %{$_[0]};
1142    my ($parameter, $section);
1143
1144    print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
1145
1146    print ".SH NAME\n";
1147    print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
1148
1149    print ".SH SYNOPSIS\n";
1150    print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
1151
1152    foreach my $parameter (@{$args{'parameterlist'}}) {
1153        if ($parameter =~ /^#/) {
1154            print ".BI \"$parameter\"\n.br\n";
1155            next;
1156        }
1157        my $parameter_name = $parameter;
1158        $parameter_name =~ s/\[.*//;
1159
1160        ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1161        $type = $args{'parametertypes'}{$parameter};
1162        if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1163            # pointer-to-function
1164            print ".BI \"    " . $1 . "\" " . $parameter . " \") (" . $2 . ")" . "\"\n;\n";
1165        } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1166            # bitfield
1167            print ".BI \"    " . $1 . "\ \" " . $parameter . $2 . " \"" . "\"\n;\n";
1168        } else {
1169            $type =~ s/([^\*])$/$1 /;
1170            print ".BI \"    " . $type . "\" " . $parameter . " \"" . "\"\n;\n";
1171        }
1172        print "\n.br\n";
1173    }
1174    print "};\n.br\n";
1175
1176    print ".SH Members\n";
1177    foreach $parameter (@{$args{'parameterlist'}}) {
1178        ($parameter =~ /^#/) && next;
1179
1180        my $parameter_name = $parameter;
1181        $parameter_name =~ s/\[.*//;
1182
1183        ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1184        print ".IP \"" . $parameter . "\" 12\n";
1185        output_highlight($args{'parameterdescs'}{$parameter_name});
1186    }
1187    foreach $section (@{$args{'sectionlist'}}) {
1188        print ".SH \"$section\"\n";
1189        output_highlight($args{'sections'}{$section});
1190    }
1191}
1192
1193##
1194# output typedef in man
1195sub output_typedef_man(%) {
1196    my %args = %{$_[0]};
1197    my ($parameter, $section);
1198
1199    print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
1200
1201    print ".SH NAME\n";
1202    print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
1203
1204    foreach $section (@{$args{'sectionlist'}}) {
1205        print ".SH \"$section\"\n";
1206        output_highlight($args{'sections'}{$section});
1207    }
1208}
1209
1210sub output_blockhead_man(%) {
1211    my %args = %{$_[0]};
1212    my ($parameter, $section);
1213    my $count;
1214
1215    print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
1216
1217    foreach $section (@{$args{'sectionlist'}}) {
1218        print ".SH \"$section\"\n";
1219        output_highlight($args{'sections'}{$section});
1220    }
1221}
1222
1223##
1224# output in text
1225sub output_function_text(%) {
1226    my %args = %{$_[0]};
1227    my ($parameter, $section);
1228    my $start;
1229
1230    print "Name:\n\n";
1231    print $args{'function'} . " - " . $args{'purpose'} . "\n";
1232
1233    print "\nSynopsis:\n\n";
1234    if ($args{'functiontype'} ne "") {
1235        $start = $args{'functiontype'} . " " . $args{'function'} . " (";
1236    } else {
1237        $start = $args{'function'} . " (";
1238    }
1239    print $start;
1240
1241    my $count = 0;
1242    foreach my $parameter (@{$args{'parameterlist'}}) {
1243        $type = $args{'parametertypes'}{$parameter};
1244        if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1245            # pointer-to-function
1246            print $1 . $parameter . ") (" . $2;
1247        } else {
1248            print $type . " " . $parameter;
1249        }
1250        if ($count != $#{$args{'parameterlist'}}) {
1251            $count++;
1252            print ",\n";
1253            print " " x length($start);
1254        } else {
1255            print ");\n\n";
1256        }
1257    }
1258
1259    print "Arguments:\n\n";
1260    foreach $parameter (@{$args{'parameterlist'}}) {
1261        my $parameter_name = $parameter;
1262        $parameter_name =~ s/\[.*//;
1263
1264        print $parameter . "\n\t" . $args{'parameterdescs'}{$parameter_name} . "\n";
1265    }
1266    output_section_text(@_);
1267}
1268
1269#output sections in text
1270sub output_section_text(%) {
1271    my %args = %{$_[0]};
1272    my $section;
1273
1274    print "\n";
1275    foreach $section (@{$args{'sectionlist'}}) {
1276        print "$section:\n\n";
1277        output_highlight($args{'sections'}{$section});
1278    }
1279    print "\n\n";
1280}
1281
1282# output enum in text
1283sub output_enum_text(%) {
1284    my %args = %{$_[0]};
1285    my ($parameter);
1286    my $count;
1287    print "Enum:\n\n";
1288
1289    print "enum " . $args{'enum'} . " - " . $args{'purpose'} . "\n\n";
1290    print "enum " . $args{'enum'} . " {\n";
1291    $count = 0;
1292    foreach $parameter (@{$args{'parameterlist'}}) {
1293        print "\t$parameter";
1294        if ($count != $#{$args{'parameterlist'}}) {
1295            $count++;
1296            print ",";
1297        }
1298        print "\n";
1299    }
1300    print "};\n\n";
1301
1302    print "Constants:\n\n";
1303    foreach $parameter (@{$args{'parameterlist'}}) {
1304        print "$parameter\n\t";
1305        print $args{'parameterdescs'}{$parameter} . "\n";
1306    }
1307
1308    output_section_text(@_);
1309}
1310
1311# output typedef in text
1312sub output_typedef_text(%) {
1313    my %args = %{$_[0]};
1314    my ($parameter);
1315    my $count;
1316    print "Typedef:\n\n";
1317
1318    print "typedef " . $args{'typedef'} . " - " . $args{'purpose'} . "\n";
1319    output_section_text(@_);
1320}
1321
1322# output struct as text
1323sub output_struct_text(%) {
1324    my %args = %{$_[0]};
1325    my ($parameter);
1326
1327    print $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "\n\n";
1328    print $args{'type'} . " " . $args{'struct'} . " {\n";
1329    foreach $parameter (@{$args{'parameterlist'}}) {
1330        if ($parameter =~ /^#/) {
1331            print "$parameter\n";
1332            next;
1333        }
1334
1335        my $parameter_name = $parameter;
1336        $parameter_name =~ s/\[.*//;
1337
1338        ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1339        $type = $args{'parametertypes'}{$parameter};
1340        if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1341            # pointer-to-function
1342            print "\t$1 $parameter) ($2);\n";
1343        } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1344            # bitfield
1345            print "\t$1 $parameter$2;\n";
1346        } else {
1347            print "\t" . $type . " " . $parameter . ";\n";
1348        }
1349    }
1350    print "};\n\n";
1351
1352    print "Members:\n\n";
1353    foreach $parameter (@{$args{'parameterlist'}}) {
1354        ($parameter =~ /^#/) && next;
1355
1356        my $parameter_name = $parameter;
1357        $parameter_name =~ s/\[.*//;
1358
1359        ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1360        print "$parameter\n\t";
1361        print $args{'parameterdescs'}{$parameter_name} . "\n";
1362    }
1363    print "\n";
1364    output_section_text(@_);
1365}
1366
1367sub output_blockhead_text(%) {
1368    my %args = %{$_[0]};
1369    my ($parameter, $section);
1370
1371    foreach $section (@{$args{'sectionlist'}}) {
1372        print " $section:\n";
1373        print "    -> ";
1374        output_highlight($args{'sections'}{$section});
1375    }
1376}
1377
1378## list mode output functions
1379
1380sub output_function_list(%) {
1381    my %args = %{$_[0]};
1382
1383    print $args{'function'} . "\n";
1384}
1385
1386# output enum in list
1387sub output_enum_list(%) {
1388    my %args = %{$_[0]};
1389    print $args{'enum'} . "\n";
1390}
1391
1392# output typedef in list
1393sub output_typedef_list(%) {
1394    my %args = %{$_[0]};
1395    print $args{'typedef'} . "\n";
1396}
1397
1398# output struct as list
1399sub output_struct_list(%) {
1400    my %args = %{$_[0]};
1401
1402    print $args{'struct'} . "\n";
1403}
1404
1405sub output_blockhead_list(%) {
1406    my %args = %{$_[0]};
1407    my ($parameter, $section);
1408
1409    foreach $section (@{$args{'sectionlist'}}) {
1410        print "DOC: $section\n";
1411    }
1412}
1413
1414##
1415# generic output function for all types (function, struct/union, typedef, enum);
1416# calls the generated, variable output_ function name based on
1417# functype and output_mode
1418sub output_declaration {
1419    no strict 'refs';
1420    my $name = shift;
1421    my $functype = shift;
1422    my $func = "output_${functype}_$output_mode";
1423    if (($function_only==0) ||
1424        ( $function_only == 1 && defined($function_table{$name})) ||
1425        ( $function_only == 2 && !defined($function_table{$name})))
1426    {
1427        &$func(@_);
1428        $section_counter++;
1429    }
1430}
1431
1432##
1433# generic output function - calls the right one based on current output mode.
1434sub output_blockhead {
1435    no strict 'refs';
1436    my $func = "output_blockhead_" . $output_mode;
1437    &$func(@_);
1438    $section_counter++;
1439}
1440
1441##
1442# takes a declaration (struct, union, enum, typedef) and
1443# invokes the right handler. NOT called for functions.
1444sub dump_declaration($$) {
1445    no strict 'refs';
1446    my ($prototype, $file) = @_;
1447    my $func = "dump_" . $decl_type;
1448    &$func(@_);
1449}
1450
1451sub dump_union($$) {
1452    dump_struct(@_);
1453}
1454
1455sub dump_struct($$) {
1456    my $x = shift;
1457    my $file = shift;
1458    my $nested;
1459
1460    if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
1461        #my $decl_type = $1;
1462        $declaration_name = $2;
1463        my $members = $3;
1464
1465        # ignore embedded structs or unions
1466        $members =~ s/({.*})//g;
1467        $nested = $1;
1468
1469        # ignore members marked private:
1470        $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gos;
1471        $members =~ s/\/\*\s*private:.*//gos;
1472        # strip comments:
1473        $members =~ s/\/\*.*?\*\///gos;
1474        $nested =~ s/\/\*.*?\*\///gos;
1475        # strip kmemcheck_bitfield_{begin,end}.*;
1476        $members =~ s/kmemcheck_bitfield_.*?;//gos;
1477        # strip attributes
1478        $members =~ s/__aligned\s*\(\d+\)//gos;
1479
1480        create_parameterlist($members, ';', $file);
1481        check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);
1482
1483        output_declaration($declaration_name,
1484                           'struct',
1485                           {'struct' => $declaration_name,
1486                            'module' => $modulename,
1487                            'parameterlist' => \@parameterlist,
1488                            'parameterdescs' => \%parameterdescs,
1489                            'parametertypes' => \%parametertypes,
1490                            'sectionlist' => \@sectionlist,
1491                            'sections' => \%sections,
1492                            'purpose' => $declaration_purpose,
1493                            'type' => $decl_type
1494                           });
1495    }
1496    else {
1497        print STDERR "Error(${file}:$.): Cannot parse struct or union!\n";
1498        ++$errors;
1499    }
1500}
1501
1502sub dump_enum($$) {
1503    my $x = shift;
1504    my $file = shift;
1505
1506    $x =~ s@/\*.*?\*/@@gos;     # strip comments.
1507    $x =~ s/^#\s*define\s+.*$//; # strip #define macros inside enums
1508
1509    if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
1510        $declaration_name = $1;
1511        my $members = $2;
1512
1513        foreach my $arg (split ',', $members) {
1514            $arg =~ s/^\s*(\w+).*/$1/;
1515            push @parameterlist, $arg;
1516            if (!$parameterdescs{$arg}) {
1517                $parameterdescs{$arg} = $undescribed;
1518                print STDERR "Warning(${file}:$.): Enum value '$arg' ".
1519                    "not described in enum '$declaration_name'\n";
1520            }
1521
1522        }
1523
1524        output_declaration($declaration_name,
1525                           'enum',
1526                           {'enum' => $declaration_name,
1527                            'module' => $modulename,
1528                            'parameterlist' => \@parameterlist,
1529                            'parameterdescs' => \%parameterdescs,
1530                            'sectionlist' => \@sectionlist,
1531                            'sections' => \%sections,
1532                            'purpose' => $declaration_purpose
1533                           });
1534    }
1535    else {
1536        print STDERR "Error(${file}:$.): Cannot parse enum!\n";
1537        ++$errors;
1538    }
1539}
1540
1541sub dump_typedef($$) {
1542    my $x = shift;
1543    my $file = shift;
1544
1545    $x =~ s@/\*.*?\*/@@gos;     # strip comments.
1546    while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1547        $x =~ s/\(*.\)\s*;$/;/;
1548        $x =~ s/\[*.\]\s*;$/;/;
1549    }
1550
1551    if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1552        $declaration_name = $1;
1553
1554        output_declaration($declaration_name,
1555                           'typedef',
1556                           {'typedef' => $declaration_name,
1557                            'module' => $modulename,
1558                            'sectionlist' => \@sectionlist,
1559                            'sections' => \%sections,
1560                            'purpose' => $declaration_purpose
1561                           });
1562    }
1563    else {
1564        print STDERR "Error(${file}:$.): Cannot parse typedef!\n";
1565        ++$errors;
1566    }
1567}
1568
1569sub save_struct_actual($) {
1570    my $actual = shift;
1571
1572    # strip all spaces from the actual param so that it looks like one string item
1573    $actual =~ s/\s*//g;
1574    $struct_actual = $struct_actual . $actual . " ";
1575}
1576
1577sub create_parameterlist($$$) {
1578    my $args = shift;
1579    my $splitter = shift;
1580    my $file = shift;
1581    my $type;
1582    my $param;
1583
1584    # temporarily replace commas inside function pointer definition
1585    while ($args =~ /(\([^\),]+),/) {
1586        $args =~ s/(\([^\),]+),/$1#/g;
1587    }
1588
1589    foreach my $arg (split($splitter, $args)) {
1590        # strip comments
1591        $arg =~ s/\/\*.*\*\///;
1592        # strip leading/trailing spaces
1593        $arg =~ s/^\s*//;
1594        $arg =~ s/\s*$//;
1595        $arg =~ s/\s+/ /;
1596
1597        if ($arg =~ /^#/) {
1598            # Treat preprocessor directive as a typeless variable just to fill
1599            # corresponding data structures "correctly". Catch it later in
1600            # output_* subs.
1601            push_parameter($arg, "", $file);
1602        } elsif ($arg =~ m/\(.+\)\s*\(/) {
1603            # pointer-to-function
1604            $arg =~ tr/#/,/;
1605            $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
1606            $param = $1;
1607            $type = $arg;
1608            $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1609            save_struct_actual($param);
1610            push_parameter($param, $type, $file);
1611        } elsif ($arg) {
1612            $arg =~ s/\s*:\s*/:/g;
1613            $arg =~ s/\s*\[/\[/g;
1614
1615            my @args = split('\s*,\s*', $arg);
1616            if ($args[0] =~ m/\*/) {
1617                $args[0] =~ s/(\*+)\s*/ $1/;
1618            }
1619
1620            my @first_arg;
1621            if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1622                    shift @args;
1623                    push(@first_arg, split('\s+', $1));
1624                    push(@first_arg, $2);
1625            } else {
1626                    @first_arg = split('\s+', shift @args);
1627            }
1628
1629            unshift(@args, pop @first_arg);
1630            $type = join " ", @first_arg;
1631
1632            foreach $param (@args) {
1633                if ($param =~ m/^(\*+)\s*(.*)/) {
1634                    save_struct_actual($2);
1635                    push_parameter($2, "$type $1", $file);
1636                }
1637                elsif ($param =~ m/(.*?):(\d+)/) {
1638                    if ($type ne "") { # skip unnamed bit-fields
1639                        save_struct_actual($1);
1640                        push_parameter($1, "$type:$2", $file)
1641                    }
1642                }
1643                else {
1644                    save_struct_actual($param);
1645                    push_parameter($param, $type, $file);
1646                }
1647            }
1648        }
1649    }
1650}
1651
1652sub push_parameter($$$) {
1653        my $param = shift;
1654        my $type = shift;
1655        my $file = shift;
1656
1657        if (($anon_struct_union == 1) && ($type eq "") &&
1658            ($param eq "}")) {
1659                return;         # ignore the ending }; from anon. struct/union
1660        }
1661
1662        $anon_struct_union = 0;
1663        my $param_name = $param;
1664        $param_name =~ s/\[.*//;
1665
1666        if ($type eq "" && $param =~ /\.\.\.$/)
1667        {
1668            if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1669                $parameterdescs{$param} = "variable arguments";
1670            }
1671        }
1672        elsif ($type eq "" && ($param eq "" or $param eq "void"))
1673        {
1674            $param="void";
1675            $parameterdescs{void} = "no arguments";
1676        }
1677        elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1678        # handle unnamed (anonymous) union or struct:
1679        {
1680                $type = $param;
1681                $param = "{unnamed_" . $param . "}";
1682                $parameterdescs{$param} = "anonymous\n";
1683                $anon_struct_union = 1;
1684        }
1685
1686        # warn if parameter has no description
1687        # (but ignore ones starting with # as these are not parameters
1688        # but inline preprocessor statements);
1689        # also ignore unnamed structs/unions;
1690        if (!$anon_struct_union) {
1691        if (!defined $parameterdescs{$param_name} && $param_name !~ /^#/) {
1692
1693            $parameterdescs{$param_name} = $undescribed;
1694
1695            if (($type eq 'function') || ($type eq 'enum')) {
1696                print STDERR "Warning(${file}:$.): Function parameter ".
1697                    "or member '$param' not " .
1698                    "described in '$declaration_name'\n";
1699            }
1700            print STDERR "Warning(${file}:$.):" .
1701                         " No description found for parameter '$param'\n";
1702            ++$warnings;
1703        }
1704        }
1705
1706        $param = xml_escape($param);
1707
1708        # strip spaces from $param so that it is one continuous string
1709        # on @parameterlist;
1710        # this fixes a problem where check_sections() cannot find
1711        # a parameter like "addr[6 + 2]" because it actually appears
1712        # as "addr[6", "+", "2]" on the parameter list;
1713        # but it's better to maintain the param string unchanged for output,
1714        # so just weaken the string compare in check_sections() to ignore
1715        # "[blah" in a parameter string;
1716        ###$param =~ s/\s*//g;
1717        push @parameterlist, $param;
1718        $parametertypes{$param} = $type;
1719}
1720
1721sub check_sections($$$$$$) {
1722        my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck, $nested) = @_;
1723        my @sects = split ' ', $sectcheck;
1724        my @prms = split ' ', $prmscheck;
1725        my $err;
1726        my ($px, $sx);
1727        my $prm_clean;          # strip trailing "[array size]" and/or beginning "*"
1728
1729        foreach $sx (0 .. $#sects) {
1730                $err = 1;
1731                foreach $px (0 .. $#prms) {
1732                        $prm_clean = $prms[$px];
1733                        $prm_clean =~ s/\[.*\]//;
1734                        $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
1735                        # ignore array size in a parameter string;
1736                        # however, the original param string may contain
1737                        # spaces, e.g.:  addr[6 + 2]
1738                        # and this appears in @prms as "addr[6" since the
1739                        # parameter list is split at spaces;
1740                        # hence just ignore "[..." for the sections check;
1741                        $prm_clean =~ s/\[.*//;
1742
1743                        ##$prm_clean =~ s/^\**//;
1744                        if ($prm_clean eq $sects[$sx]) {
1745                                $err = 0;
1746                                last;
1747                        }
1748                }
1749                if ($err) {
1750                        if ($decl_type eq "function") {
1751                                print STDERR "Warning(${file}:$.): " .
1752                                        "Excess function parameter " .
1753                                        "'$sects[$sx]' " .
1754                                        "description in '$decl_name'\n";
1755                                ++$warnings;
1756                        } else {
1757                                if ($nested !~ m/\Q$sects[$sx]\E/) {
1758                                    print STDERR "Warning(${file}:$.): " .
1759                                        "Excess struct/union/enum/typedef member " .
1760                                        "'$sects[$sx]' " .
1761                                        "description in '$decl_name'\n";
1762                                    ++$warnings;
1763                                }
1764                        }
1765                }
1766        }
1767}
1768
1769##
1770# takes a function prototype and the name of the current file being
1771# processed and spits out all the details stored in the global
1772# arrays/hashes.
1773sub dump_function($$) {
1774    my $prototype = shift;
1775    my $file = shift;
1776
1777    $prototype =~ s/^static +//;
1778    $prototype =~ s/^extern +//;
1779    $prototype =~ s/^asmlinkage +//;
1780    $prototype =~ s/^inline +//;
1781    $prototype =~ s/^__inline__ +//;
1782    $prototype =~ s/^__inline +//;
1783    $prototype =~ s/^__always_inline +//;
1784    $prototype =~ s/^noinline +//;
1785    $prototype =~ s/__devinit +//;
1786    $prototype =~ s/__init +//;
1787    $prototype =~ s/__init_or_module +//;
1788    $prototype =~ s/__must_check +//;
1789    $prototype =~ s/__weak +//;
1790    $prototype =~ s/^#\s*define\s+//; #ak added
1791    $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//;
1792
1793    # Yes, this truly is vile.  We are looking for:
1794    # 1. Return type (may be nothing if we're looking at a macro)
1795    # 2. Function name
1796    # 3. Function parameters.
1797    #
1798    # All the while we have to watch out for function pointer parameters
1799    # (which IIRC is what the two sections are for), C types (these
1800    # regexps don't even start to express all the possibilities), and
1801    # so on.
1802    #
1803    # If you mess with these regexps, it's a good idea to check that
1804    # the following functions' documentation still comes out right:
1805    # - parport_register_device (function pointer parameters)
1806    # - atomic_set (macro)
1807    # - pci_match_device, __copy_to_user (long return type)
1808
1809    if ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1810        $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1811        $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1812        $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1813        $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1814        $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1815        $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1816        $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1817        $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1818        $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1819        $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1820        $prototype =~ m/^(\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1821        $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1822        $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1823        $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1824        $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1825        $prototype =~ m/^(\w+\s+\w+\s*\*\s*\w+\s*\*\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
1826        $return_type = $1;
1827        $declaration_name = $2;
1828        my $args = $3;
1829
1830        create_parameterlist($args, ',', $file);
1831    } else {
1832        print STDERR "Error(${file}:$.): cannot understand prototype: '$prototype'\n";
1833        ++$errors;
1834        return;
1835    }
1836
1837        my $prms = join " ", @parameterlist;
1838        check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");
1839
1840    output_declaration($declaration_name,
1841                       'function',
1842                       {'function' => $declaration_name,
1843                        'module' => $modulename,
1844                        'functiontype' => $return_type,
1845                        'parameterlist' => \@parameterlist,
1846                        'parameterdescs' => \%parameterdescs,
1847                        'parametertypes' => \%parametertypes,
1848                        'sectionlist' => \@sectionlist,
1849                        'sections' => \%sections,
1850                        'purpose' => $declaration_purpose
1851                       });
1852}
1853
1854sub reset_state {
1855    $function = "";
1856    %constants = ();
1857    %parameterdescs = ();
1858    %parametertypes = ();
1859    @parameterlist = ();
1860    %sections = ();
1861    @sectionlist = ();
1862    $sectcheck = "";
1863    $struct_actual = "";
1864    $prototype = "";
1865
1866    $state = 0;
1867}
1868
1869sub tracepoint_munge($) {
1870        my $file = shift;
1871        my $tracepointname = 0;
1872        my $tracepointargs = 0;
1873
1874        if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
1875                $tracepointname = $1;
1876        }
1877        if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
1878                $tracepointname = $1;
1879        }
1880        if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
1881                $tracepointname = $2;
1882        }
1883        $tracepointname =~ s/^\s+//; #strip leading whitespace
1884        if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
1885                $tracepointargs = $1;
1886        }
1887        if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
1888                print STDERR "Warning(${file}:$.): Unrecognized tracepoint format: \n".
1889                             "$prototype\n";
1890        } else {
1891                $prototype = "static inline void trace_$tracepointname($tracepointargs)";
1892        }
1893}
1894
1895sub syscall_munge() {
1896        my $void = 0;
1897
1898        $prototype =~ s@[\r\n\t]+@ @gos; # strip newlines/CR's/tabs
1899##      if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1900        if ($prototype =~ m/SYSCALL_DEFINE0/) {
1901                $void = 1;
1902##              $prototype = "long sys_$1(void)";
1903        }
1904
1905        $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1906        if ($prototype =~ m/long (sys_.*?),/) {
1907                $prototype =~ s/,/\(/;
1908        } elsif ($void) {
1909                $prototype =~ s/\)/\(void\)/;
1910        }
1911
1912        # now delete all of the odd-number commas in $prototype
1913        # so that arg types & arg names don't have a comma between them
1914        my $count = 0;
1915        my $len = length($prototype);
1916        if ($void) {
1917                $len = 0;       # skip the for-loop
1918        }
1919        for (my $ix = 0; $ix < $len; $ix++) {
1920                if (substr($prototype, $ix, 1) eq ',') {
1921                        $count++;
1922                        if ($count % 2 == 1) {
1923                                substr($prototype, $ix, 1) = ' ';
1924                        }
1925                }
1926        }
1927}
1928
1929sub process_state3_function($$) {
1930    my $x = shift;
1931    my $file = shift;
1932
1933    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1934
1935    if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1936        # do nothing
1937    }
1938    elsif ($x =~ /([^\{]*)/) {
1939        $prototype .= $1;
1940    }
1941
1942    if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1943        $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
1944        $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1945        $prototype =~ s@^\s+@@gos; # strip leading spaces
1946        if ($prototype =~ /SYSCALL_DEFINE/) {
1947                syscall_munge();
1948        }
1949        if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
1950            $prototype =~ /DEFINE_SINGLE_EVENT/)
1951        {
1952                tracepoint_munge($file);
1953        }
1954        dump_function($prototype, $file);
1955        reset_state();
1956    }
1957}
1958
1959sub process_state3_type($$) {
1960    my $x = shift;
1961    my $file = shift;
1962
1963    $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1964    $x =~ s@^\s+@@gos; # strip leading spaces
1965    $x =~ s@\s+$@@gos; # strip trailing spaces
1966    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1967
1968    if ($x =~ /^#/) {
1969        # To distinguish preprocessor directive from regular declaration later.
1970        $x .= ";";
1971    }
1972
1973    while (1) {
1974        if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
1975            $prototype .= $1 . $2;
1976            ($2 eq '{') && $brcount++;
1977            ($2 eq '}') && $brcount--;
1978            if (($2 eq ';') && ($brcount == 0)) {
1979                dump_declaration($prototype, $file);
1980                reset_state();
1981                last;
1982            }
1983            $x = $3;
1984        } else {
1985            $prototype .= $x;
1986            last;
1987        }
1988    }
1989}
1990
1991# xml_escape: replace <, >, and & in the text stream;
1992#
1993# however, formatting controls that are generated internally/locally in the
1994# kernel-doc script are not escaped here; instead, they begin life like
1995# $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
1996# are converted to their mnemonic-expected output, without the 4 * '\' & ':',
1997# just before actual output; (this is done by local_unescape())
1998sub xml_escape($) {
1999        my $text = shift;
2000        if (($output_mode eq "text") || ($output_mode eq "man")) {
2001                return $text;
2002        }
2003        $text =~ s/\&/\\\\\\amp;/g;
2004        $text =~ s/\</\\\\\\lt;/g;
2005        $text =~ s/\>/\\\\\\gt;/g;
2006        return $text;
2007}
2008
2009# convert local escape strings to html
2010# local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
2011sub local_unescape($) {
2012        my $text = shift;
2013        if (($output_mode eq "text") || ($output_mode eq "man")) {
2014                return $text;
2015        }
2016        $text =~ s/\\\\\\\\lt:/</g;
2017        $text =~ s/\\\\\\\\gt:/>/g;
2018        return $text;
2019}
2020
2021sub process_file($) {
2022    my $file;
2023    my $identifier;
2024    my $func;
2025    my $descr;
2026    my $in_purpose = 0;
2027    my $initial_section_counter = $section_counter;
2028
2029    if (defined($ENV{'SRCTREE'})) {
2030        $file = "$ENV{'SRCTREE'}" . "/" . "@_";
2031    }
2032    else {
2033        $file = "@_";
2034    }
2035    if (defined($source_map{$file})) {
2036        $file = $source_map{$file};
2037    }
2038
2039    if (!open(IN,"<$file")) {
2040        print STDERR "Error: Cannot open file $file\n";
2041        ++$errors;
2042        return;
2043    }
2044
2045    $. = 1;
2046
2047    $section_counter = 0;
2048    while (<IN>) {
2049        if ($state == 0) {
2050            if (/$doc_start/o) {
2051                $state = 1;             # next line is always the function name
2052                $in_doc_sect = 0;
2053            }
2054        } elsif ($state == 1) { # this line is the function name (always)
2055            if (/$doc_block/o) {
2056                $state = 4;
2057                $contents = "";
2058                if ( $1 eq "" ) {
2059                        $section = $section_intro;
2060                } else {
2061                        $section = $1;
2062                }
2063            }
2064            elsif (/$doc_decl/o) {
2065                $identifier = $1;
2066                if (/\s*([\w\s]+?)\s*-/) {
2067                    $identifier = $1;
2068                }
2069
2070                $state = 2;
2071                if (/-(.*)/) {
2072                    # strip leading/trailing/multiple spaces
2073                    $descr= $1;
2074                    $descr =~ s/^\s*//;
2075                    $descr =~ s/\s*$//;
2076                    $descr =~ s/\s+/ /;
2077                    $declaration_purpose = xml_escape($descr);
2078                    $in_purpose = 1;
2079                } else {
2080                    $declaration_purpose = "";
2081                }
2082
2083                if (($declaration_purpose eq "") && $verbose) {
2084                        print STDERR "Warning(${file}:$.): missing initial short description on line:\n";
2085                        print STDERR $_;
2086                        ++$warnings;
2087                }
2088
2089                if ($identifier =~ m/^struct/) {
2090                    $decl_type = 'struct';
2091                } elsif ($identifier =~ m/^union/) {
2092                    $decl_type = 'union';
2093                } elsif ($identifier =~ m/^enum/) {
2094                    $decl_type = 'enum';
2095                } elsif ($identifier =~ m/^typedef/) {
2096                    $decl_type = 'typedef';
2097                } else {
2098                    $decl_type = 'function';
2099                }
2100
2101                if ($verbose) {
2102                    print STDERR "Info(${file}:$.): Scanning doc for $identifier\n";
2103                }
2104            } else {
2105                print STDERR "Warning(${file}:$.): Cannot understand $_ on line $.",
2106                " - I thought it was a doc line\n";
2107                ++$warnings;
2108                $state = 0;
2109            }
2110        } elsif ($state == 2) { # look for head: lines, and include content
2111            if (/$doc_sect/o) {
2112                $newsection = $1;
2113                $newcontents = $2;
2114
2115                if (($contents ne "") && ($contents ne "\n")) {
2116                    if (!$in_doc_sect && $verbose) {
2117                        print STDERR "Warning(${file}:$.): contents before sections\n";
2118                        ++$warnings;
2119                    }
2120                    dump_section($file, $section, xml_escape($contents));
2121                    $section = $section_default;
2122                }
2123
2124                $in_doc_sect = 1;
2125                $in_purpose = 0;
2126                $contents = $newcontents;
2127                if ($contents ne "") {
2128                    while ((substr($contents, 0, 1) eq " ") ||
2129                        substr($contents, 0, 1) eq "\t") {
2130                            $contents = substr($contents, 1);
2131                    }
2132                    $contents .= "\n";
2133                }
2134                $section = $newsection;
2135            } elsif (/$doc_end/) {
2136
2137                if (($contents ne "") && ($contents ne "\n")) {
2138                    dump_section($file, $section, xml_escape($contents));
2139                    $section = $section_default;
2140                    $contents = "";
2141                }
2142                # look for doc_com + <text> + doc_end:
2143                if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2144                    print STDERR "Warning(${file}:$.): suspicious ending line: $_";
2145                    ++$warnings;
2146                }
2147
2148                $prototype = "";
2149                $state = 3;
2150                $brcount = 0;
2151#               print STDERR "end of doc comment, looking for prototype\n";
2152            } elsif (/$doc_content/) {
2153                # miguel-style comment kludge, look for blank lines after
2154                # @parameter line to signify start of description
2155                if ($1 eq "") {
2156                    if ($section =~ m/^@/ || $section eq $section_context) {
2157                        dump_section($file, $section, xml_escape($contents));
2158                        $section = $section_default;
2159                        $contents = "";
2160                    } else {
2161                        $contents .= "\n";
2162                    }
2163                    $in_purpose = 0;
2164                } elsif ($in_purpose == 1) {
2165                    # Continued declaration purpose
2166                    chomp($declaration_purpose);
2167                    $declaration_purpose .= " " . xml_escape($1);
2168                } else {
2169                    $contents .= $1 . "\n";
2170                }
2171            } else {
2172                # i dont know - bad line?  ignore.
2173                print STDERR "Warning(${file}:$.): bad line: $_";
2174                ++$warnings;
2175            }
2176        } elsif ($state == 3) { # scanning for function '{' (end of prototype)
2177            if ($decl_type eq 'function') {
2178                process_state3_function($_, $file);
2179            } else {
2180                process_state3_type($_, $file);
2181            }
2182        } elsif ($state == 4) {
2183                # Documentation block
2184                if (/$doc_block/) {
2185                        dump_doc_section($file, $section, xml_escape($contents));
2186                        $contents = "";
2187                        $function = "";
2188                        %constants = ();
2189                        %parameterdescs = ();
2190                        %parametertypes = ();
2191                        @parameterlist = ();
2192                        %sections = ();
2193                        @sectionlist = ();
2194                        $prototype = "";
2195                        if ( $1 eq "" ) {
2196                                $section = $section_intro;
2197                        } else {
2198                                $section = $1;
2199                        }
2200                }
2201                elsif (/$doc_end/)
2202                {
2203                        dump_doc_section($file, $section, xml_escape($contents));
2204                        $contents = "";
2205                        $function = "";
2206                        %constants = ();
2207                        %parameterdescs = ();
2208                        %parametertypes = ();
2209                        @parameterlist = ();
2210                        %sections = ();
2211                        @sectionlist = ();
2212                        $prototype = "";
2213                        $state = 0;
2214                }
2215                elsif (/$doc_content/)
2216                {
2217                        if ( $1 eq "" )
2218                        {
2219                                $contents .= $blankline;
2220                        }
2221                        else
2222                        {
2223                                $contents .= $1 . "\n";
2224                        }
2225                }
2226        }
2227    }
2228    if ($initial_section_counter == $section_counter) {
2229        print STDERR "Warning(${file}): no structured comments found\n";
2230        if ($output_mode eq "xml") {
2231            # The template wants at least one RefEntry here; make one.
2232            print "<refentry>\n";
2233            print " <refnamediv>\n";
2234            print "  <refname>\n";
2235            print "   ${file}\n";
2236            print "  </refname>\n";
2237            print "  <refpurpose>\n";
2238            print "   Document generation inconsistency\n";
2239            print "  </refpurpose>\n";
2240            print " </refnamediv>\n";
2241            print " <refsect1>\n";
2242            print "  <title>\n";
2243            print "   Oops\n";
2244            print "  </title>\n";
2245            print "  <warning>\n";
2246            print "   <para>\n";
2247            print "    The template for this document tried to insert\n";
2248            print "    the structured comment from the file\n";
2249            print "    <filename>${file}</filename> at this point,\n";
2250            print "    but none was found.\n";
2251            print "    This dummy section is inserted to allow\n";
2252            print "    generation to continue.\n";
2253            print "   </para>\n";
2254            print "  </warning>\n";
2255            print " </refsect1>\n";
2256            print "</refentry>\n";
2257        }
2258    }
2259}
2260
2261
2262$kernelversion = get_kernel_version();
2263
2264# generate a sequence of code that will splice in highlighting information
2265# using the s// operator.
2266foreach my $pattern (keys %highlights) {
2267#   print STDERR "scanning pattern:$pattern, highlight:($highlights{$pattern})\n";
2268    $dohighlight .=  "\$contents =~ s:$pattern:$highlights{$pattern}:gs;\n";
2269}
2270
2271# Read the file that maps relative names to absolute names for
2272# separate source and object directories and for shadow trees.
2273if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
2274        my ($relname, $absname);
2275        while(<SOURCE_MAP>) {
2276                chop();
2277                ($relname, $absname) = (split())[0..1];
2278                $relname =~ s:^/+::;
2279                $source_map{$relname} = $absname;
2280        }
2281        close(SOURCE_MAP);
2282}
2283
2284foreach (@ARGV) {
2285    chomp;
2286    process_file($_);
2287}
2288if ($verbose && $errors) {
2289  print STDERR "$errors errors\n";
2290}
2291if ($verbose && $warnings) {
2292  print STDERR "$warnings warnings\n";
2293}
2294
2295exit($errors);
2296
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