scripts/kernel-doc

   1 #!/usr/bin/perl -w
   2
   3 use strict;
   4
   5 ## Copyright (c) 1998 Michael Zucchi, All Rights Reserved        ##
   6 ## Copyright (C) 2000, 1  Tim Waugh <twaugh@redhat.com>          ##
   7 ## Copyright (C) 2001  Simon Huggins                             ##
   8 ## Copyright (C) 2005-2009  Randy Dunlap                         ##
   9 ##                                                               ##
  10 ## #define enhancements by Armin Kuster <akuster@mvista.com>     ##
  11 ## Copyright (c) 2000 MontaVista Software, Inc.                  ##
  12 ##                                                               ##
  13 ## This software falls under the GNU General Public License.     ##
  14 ## Please read the COPYING file for more information             ##
  15
  16 # 18/01/2001 -  Cleanups
  17 #               Functions prototyped as foo(void) same as foo()
  18 #               Stop eval'ing where we don't need to.
  19 # -- huggie@earth.li
  20
  21 # 27/06/2001 -  Allowed whitespace after initial "/**" and
  22 #               allowed comments before function declarations.
  23 # -- Christian Kreibich <ck@whoop.org>
  24
  25 # Still to do:
  26 #       - add perldoc documentation
  27 #       - Look more closely at some of the scarier bits :)
  28
  29 # 26/05/2001 -  Support for separate source and object trees.
  30 #               Return error code.
  31 #               Keith Owens <kaos@ocs.com.au>
  32
  33 # 23/09/2001 - Added support for typedefs, structs, enums and unions
  34 #              Support for Context section; can be terminated using empty line
  35 #              Small fixes (like spaces vs. \s in regex)
  36 # -- Tim Jansen <tim@tjansen.de>
  37
  38
  39 #
  40 # This will read a 'c' file and scan for embedded comments in the
  41 # style of gnome comments (+minor extensions - see below).
  42 #
  43
  44 # Note: This only supports 'c'.
  45
  46 # usage:
  47 # kernel-doc [ -docbook | -html | -text | -man | -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 my $errors = 0;
 159 my $warnings = 0;
 160 my $anon_struct_union = 0;
 161
 162 # match expressions used to find embedded type information
 163 my $type_constant = '\%([-_\w]+)';
 164 my $type_func = '(\w+)\(\)';
 165 my $type_param = '\@(\w+)';
 166 my $type_struct = '\&((struct\s*)*[_\w]+)';
 167 my $type_struct_xml = '\\&amp;((struct\s*)*[_\w]+)';
 168 my $type_env = '(\$\w+)';
 169
 170 # Output conversion substitutions.
 171 #  One for each output format
 172
 173 # these work fairly well
 174 my %highlights_html = ( $type_constant, "<i>\$1</i>",
 175                         $type_func, "<b>\$1</b>",
 176                         $type_struct_xml, "<i>\$1</i>",
 177                         $type_env, "<b><i>\$1</i></b>",
 178                         $type_param, "<tt><b>\$1</b></tt>" );
 179 my $local_lt = "\\\\\\\\lt:";
 180 my $local_gt = "\\\\\\\\gt:";
 181 my $blankline_html = $local_lt . "p" . $local_gt;       # was "<p>"
 182
 183 # XML, docbook format
 184 my %highlights_xml = ( "([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>",
 185                         $type_constant, "<constant>\$1</constant>",
 186                         $type_func, "<function>\$1</function>",
 187                         $type_struct_xml, "<structname>\$1</structname>",
 188                         $type_env, "<envar>\$1</envar>",
 189                         $type_param, "<parameter>\$1</parameter>" );
 190 my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n";
 191
 192 # gnome, docbook format
 193 my %highlights_gnome = ( $type_constant, "<replaceable class=\"option\">\$1</replaceable>",
 194                          $type_func, "<function>\$1</function>",
 195                          $type_struct, "<structname>\$1</structname>",
 196                          $type_env, "<envar>\$1</envar>",
 197                          $type_param, "<parameter>\$1</parameter>" );
 198 my $blankline_gnome = "</para><para>\n";
 199
 200 # these are pretty rough
 201 my %highlights_man = ( $type_constant, "\$1",
 202                        $type_func, "\\\\fB\$1\\\\fP",
 203                        $type_struct, "\\\\fI\$1\\\\fP",
 204                        $type_param, "\\\\fI\$1\\\\fP" );
 205 my $blankline_man = "";
 206
 207 # text-mode
 208 my %highlights_text = ( $type_constant, "\$1",
 209                         $type_func, "\$1",
 210                         $type_struct, "\$1",
 211                         $type_param, "\$1" );
 212 my $blankline_text = "";
 213
 214 # list mode
 215 my %highlights_list = ( $type_constant, "\$1",
 216                         $type_func, "\$1",
 217                         $type_struct, "\$1",
 218                         $type_param, "\$1" );
 219 my $blankline_list = "";
 220
 221 sub usage {
 222     print "Usage: $0 [ -v ] [ -docbook | -html | -text | -man | -list ]\n";
 223     print "         [ -no-doc-sections ]\n";
 224     print "         [ -function funcname [ -function funcname ...] ]\n";
 225     print "         [ -nofunction funcname [ -nofunction funcname ...] ]\n";
 226     print "         c source file(s) > outputfile\n";
 227     print "         -v : verbose output, more warnings & other info listed\n";
 228     exit 1;
 229 }
 230
 231 # read arguments
 232 if ($#ARGV == -1) {
 233     usage();
 234 }
 235
 236 my $verbose = 0;
 237 my $output_mode = "man";
 238 my $no_doc_sections = 0;
 239 my %highlights = %highlights_man;
 240 my $blankline = $blankline_man;
 241 my $modulename = "Kernel API";
 242 my $function_only = 0;
 243 my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
 244                 'July', 'August', 'September', 'October',
 245                 'November', 'December')[(localtime)[4]] .
 246   " " . ((localtime)[5]+1900);
 247
 248 # Essentially these are globals
 249 # They probably want to be tidied up, made more localised or something.
 250 # CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
 251 # could cause "use of undefined value" or other bugs.
 252 my ($function, %function_table, %parametertypes, $declaration_purpose);
 253 my ($type, $declaration_name, $return_type);
 254 my ($newsection, $newcontents, $prototype, $brcount, %source_map);
 255
 256 if (defined($ENV{'KBUILD_VERBOSE'})) {
 257         $verbose = "$ENV{'KBUILD_VERBOSE'}";
 258 }
 259
 260 # Generated docbook code is inserted in a template at a point where
 261 # docbook v3.1 requires a non-zero sequence of RefEntry's; see:
 262 # http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
 263 # We keep track of number of generated entries and generate a dummy
 264 # if needs be to ensure the expanded template can be postprocessed
 265 # into html.
 266 my $section_counter = 0;
 267
 268 my $lineprefix="";
 269
 270 # states
 271 # 0 - normal code
 272 # 1 - looking for function name
 273 # 2 - scanning field start.
 274 # 3 - scanning prototype.
 275 # 4 - documentation block
 276 my $state;
 277 my $in_doc_sect;
 278
 279 #declaration types: can be
 280 # 'function', 'struct', 'union', 'enum', 'typedef'
 281 my $decl_type;
 282
 283 my $doc_special = "\@\%\$\&";
 284
 285 my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
 286 my $doc_end = '\*/';
 287 my $doc_com = '\s*\*\s*';
 288 my $doc_decl = $doc_com . '(\w+)';
 289 my $doc_sect = $doc_com . '([' . $doc_special . ']?[\w\s]+):(.*)';
 290 my $doc_content = $doc_com . '(.*)';
 291 my $doc_block = $doc_com . 'DOC:\s*(.*)?';
 292
 293 my %constants;
 294 my %parameterdescs;
 295 my @parameterlist;
 296 my %sections;
 297 my @sectionlist;
 298 my $sectcheck;
 299 my $struct_actual;
 300
 301 my $contents = "";
 302 my $section_default = "Description";    # default section
 303 my $section_intro = "Introduction";
 304 my $section = $section_default;
 305 my $section_context = "Context";
 306
 307 my $undescribed = "-- undescribed --";
 308
 309 reset_state();
 310
 311 while ($ARGV[0] =~ m/^-(.*)/) {
 312     my $cmd = shift @ARGV;
 313     if ($cmd eq "-html") {
 314         $output_mode = "html";
 315         %highlights = %highlights_html;
 316         $blankline = $blankline_html;
 317     } elsif ($cmd eq "-man") {
 318         $output_mode = "man";
 319         %highlights = %highlights_man;
 320         $blankline = $blankline_man;
 321     } elsif ($cmd eq "-text") {
 322         $output_mode = "text";
 323         %highlights = %highlights_text;
 324         $blankline = $blankline_text;
 325     } elsif ($cmd eq "-docbook") {
 326         $output_mode = "xml";
 327         %highlights = %highlights_xml;
 328         $blankline = $blankline_xml;
 329     } elsif ($cmd eq "-list") {
 330         $output_mode = "list";
 331         %highlights = %highlights_list;
 332         $blankline = $blankline_list;
 333     } elsif ($cmd eq "-gnome") {
 334         $output_mode = "gnome";
 335         %highlights = %highlights_gnome;
 336         $blankline = $blankline_gnome;
 337     } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
 338         $modulename = shift @ARGV;
 339     } elsif ($cmd eq "-function") { # to only output specific functions
 340         $function_only = 1;
 341         $function = shift @ARGV;
 342         $function_table{$function} = 1;
 343     } elsif ($cmd eq "-nofunction") { # to only output specific functions
 344         $function_only = 2;
 345         $function = shift @ARGV;
 346         $function_table{$function} = 1;
 347     } elsif ($cmd eq "-v") {
 348         $verbose = 1;
 349     } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
 350         usage();
 351     } elsif ($cmd eq '-no-doc-sections') {
 352             $no_doc_sections = 1;
 353     }
 354 }
 355
 356 # get kernel version from env
 357 sub get_kernel_version() {
 358     my $version = 'unknown kernel version';
 359
 360     if (defined($ENV{'KERNELVERSION'})) {
 361         $version = $ENV{'KERNELVERSION'};
 362     }
 363     return $version;
 364 }
 365 my $kernelversion = get_kernel_version();
 366
 367 # generate a sequence of code that will splice in highlighting information
 368 # using the s// operator.
 369 my $dohighlight = "";
 370 foreach my $pattern (keys %highlights) {
 371 #   print STDERR "scanning pattern:$pattern, highlight:($highlights{$pattern})\n";
 372     $dohighlight .=  "\$contents =~ s:$pattern:$highlights{$pattern}:gs;\n";
 373 }
 374
 375 ##
 376 # dumps section contents to arrays/hashes intended for that purpose.
 377 #
 378 sub dump_section {
 379     my $file = shift;
 380     my $name = shift;
 381     my $contents = join "\n", @_;
 382
 383     if ($name =~ m/$type_constant/) {
 384         $name = $1;
 385 #       print STDERR "constant section '$1' = '$contents'\n";
 386         $constants{$name} = $contents;
 387     } elsif ($name =~ m/$type_param/) {
 388 #       print STDERR "parameter def '$1' = '$contents'\n";
 389         $name = $1;
 390         $parameterdescs{$name} = $contents;
 391         $sectcheck = $sectcheck . $name . " ";
 392     } elsif ($name eq "@\.\.\.") {
 393 #       print STDERR "parameter def '...' = '$contents'\n";
 394         $name = "...";
 395         $parameterdescs{$name} = $contents;
 396         $sectcheck = $sectcheck . $name . " ";
 397     } else {
 398 #       print STDERR "other section '$name' = '$contents'\n";
 399         if (defined($sections{$name}) && ($sections{$name} ne "")) {
 400                 print STDERR "Error(${file}:$.): duplicate section name '$name'\n";
 401                 ++$errors;
 402         }
 403         $sections{$name} = $contents;
 404         push @sectionlist, $name;
 405     }
 406 }
 407
 408 ##
 409 # dump DOC: section after checking that it should go out
 410 #
 411 sub dump_doc_section {
 412     my $file = shift;
 413     my $name = shift;
 414     my $contents = join "\n", @_;
 415
 416     if ($no_doc_sections) {
 417         return;
 418     }
 419
 420     if (($function_only == 0) ||
 421         ( $function_only == 1 && defined($function_table{$name})) ||
 422         ( $function_only == 2 && !defined($function_table{$name})))
 423     {
 424         dump_section($file, $name, $contents);
 425         output_blockhead({'sectionlist' => \@sectionlist,
 426                           'sections' => \%sections,
 427                           'module' => $modulename,
 428                           'content-only' => ($function_only != 0), });
 429     }
 430 }
 431
 432 ##
 433 # output function
 434 #
 435 # parameterdescs, a hash.
 436 #  function => "function name"
 437 #  parameterlist => @list of parameters
 438 #  parameterdescs => %parameter descriptions
 439 #  sectionlist => @list of sections
 440 #  sections => %section descriptions
 441 #
 442
 443 sub output_highlight {
 444     my $contents = join "\n",@_;
 445     my $line;
 446
 447 #   DEBUG
 448 #   if (!defined $contents) {
 449 #       use Carp;
 450 #       confess "output_highlight got called with no args?\n";
 451 #   }
 452
 453     if ($output_mode eq "html" || $output_mode eq "xml") {
 454         $contents = local_unescape($contents);
 455         # convert data read & converted thru xml_escape() into &xyz; format:
 456         $contents =~ s/\\\\\\/&/g;
 457     }
 458 #   print STDERR "contents b4:$contents\n";
 459     eval $dohighlight;
 460     die $@ if $@;
 461 #   print STDERR "contents af:$contents\n";
 462
 463     foreach $line (split "\n", $contents) {
 464         if ($line eq ""){
 465             print $lineprefix, local_unescape($blankline);
 466         } else {
 467             $line =~ s/\\\\\\/\&/g;
 468             if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
 469                 print "\\&$line";
 470             } else {
 471                 print $lineprefix, $line;
 472             }
 473         }
 474         print "\n";
 475     }
 476 }
 477
 478 #output sections in html
 479 sub output_section_html(%) {
 480     my %args = %{$_[0]};
 481     my $section;
 482
 483     foreach $section (@{$args{'sectionlist'}}) {
 484         print "<h3>$section</h3>\n";
 485         print "<blockquote>\n";
 486         output_highlight($args{'sections'}{$section});
 487         print "</blockquote>\n";
 488     }
 489 }
 490
 491 # output enum in html
 492 sub output_enum_html(%) {
 493     my %args = %{$_[0]};
 494     my ($parameter);
 495     my $count;
 496     print "<h2>enum " . $args{'enum'} . "</h2>\n";
 497
 498     print "<b>enum " . $args{'enum'} . "</b> {<br>\n";
 499     $count = 0;
 500     foreach $parameter (@{$args{'parameterlist'}}) {
 501         print " <b>" . $parameter . "</b>";
 502         if ($count != $#{$args{'parameterlist'}}) {
 503             $count++;
 504             print ",\n";
 505         }
 506         print "<br>";
 507     }
 508     print "};<br>\n";
 509
 510     print "<h3>Constants</h3>\n";
 511     print "<dl>\n";
 512     foreach $parameter (@{$args{'parameterlist'}}) {
 513         print "<dt><b>" . $parameter . "</b>\n";
 514         print "<dd>";
 515         output_highlight($args{'parameterdescs'}{$parameter});
 516     }
 517     print "</dl>\n";
 518     output_section_html(@_);
 519     print "<hr>\n";
 520 }
 521
 522 # output typedef in html
 523 sub output_typedef_html(%) {
 524     my %args = %{$_[0]};
 525     my ($parameter);
 526     my $count;
 527     print "<h2>typedef " . $args{'typedef'} . "</h2>\n";
 528
 529     print "<b>typedef " . $args{'typedef'} . "</b>\n";
 530     output_section_html(@_);
 531     print "<hr>\n";
 532 }
 533
 534 # output struct in html
 535 sub output_struct_html(%) {
 536     my %args = %{$_[0]};
 537     my ($parameter);
 538
 539     print "<h2>" . $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "</h2>\n";
 540     print "<b>" . $args{'type'} . " " . $args{'struct'} . "</b> {<br>\n";
 541     foreach $parameter (@{$args{'parameterlist'}}) {
 542         if ($parameter =~ /^#/) {
 543                 print "$parameter<br>\n";
 544                 next;
 545         }
 546         my $parameter_name = $parameter;
 547         $parameter_name =~ s/\[.*//;
 548
 549         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 550         $type = $args{'parametertypes'}{$parameter};
 551         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 552             # pointer-to-function
 553             print "&nbsp; &nbsp; <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
 554         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
 555             # bitfield
 556             print "&nbsp; &nbsp; <i>$1</i> <b>$parameter</b>$2;<br>\n";
 557         } else {
 558             print "&nbsp; &nbsp; <i>$type</i> <b>$parameter</b>;<br>\n";
 559         }
 560     }
 561     print "};<br>\n";
 562
 563     print "<h3>Members</h3>\n";
 564     print "<dl>\n";
 565     foreach $parameter (@{$args{'parameterlist'}}) {
 566         ($parameter =~ /^#/) && next;
 567
 568         my $parameter_name = $parameter;
 569         $parameter_name =~ s/\[.*//;
 570
 571         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 572         print "<dt><b>" . $parameter . "</b>\n";
 573         print "<dd>";
 574         output_highlight($args{'parameterdescs'}{$parameter_name});
 575     }
 576     print "</dl>\n";
 577     output_section_html(@_);
 578     print "<hr>\n";
 579 }
 580
 581 # output function in html
 582 sub output_function_html(%) {
 583     my %args = %{$_[0]};
 584     my ($parameter, $section);
 585     my $count;
 586
 587     print "<h2>" . $args{'function'} . " - " . $args{'purpose'} . "</h2>\n";
 588     print "<i>" . $args{'functiontype'} . "</i>\n";
 589     print "<b>" . $args{'function'} . "</b>\n";
 590     print "(";
 591     $count = 0;
 592     foreach $parameter (@{$args{'parameterlist'}}) {
 593         $type = $args{'parametertypes'}{$parameter};
 594         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 595             # pointer-to-function
 596             print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
 597         } else {
 598             print "<i>" . $type . "</i> <b>" . $parameter . "</b>";
 599         }
 600         if ($count != $#{$args{'parameterlist'}}) {
 601             $count++;
 602             print ",\n";
 603         }
 604     }
 605     print ")\n";
 606
 607     print "<h3>Arguments</h3>\n";
 608     print "<dl>\n";
 609     foreach $parameter (@{$args{'parameterlist'}}) {
 610         my $parameter_name = $parameter;
 611         $parameter_name =~ s/\[.*//;
 612
 613         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 614         print "<dt><b>" . $parameter . "</b>\n";
 615         print "<dd>";
 616         output_highlight($args{'parameterdescs'}{$parameter_name});
 617     }
 618     print "</dl>\n";
 619     output_section_html(@_);
 620     print "<hr>\n";
 621 }
 622
 623 # output DOC: block header in html
 624 sub output_blockhead_html(%) {
 625     my %args = %{$_[0]};
 626     my ($parameter, $section);
 627     my $count;
 628
 629     foreach $section (@{$args{'sectionlist'}}) {
 630         print "<h3>$section</h3>\n";
 631         print "<ul>\n";
 632         output_highlight($args{'sections'}{$section});
 633         print "</ul>\n";
 634     }
 635     print "<hr>\n";
 636 }
 637
 638 sub output_section_xml(%) {
 639     my %args = %{$_[0]};
 640     my $section;
 641     # print out each section
 642     $lineprefix="   ";
 643     foreach $section (@{$args{'sectionlist'}}) {
 644         print "<refsect1>\n";
 645         print "<title>$section</title>\n";
 646         if ($section =~ m/EXAMPLE/i) {
 647             print "<informalexample><programlisting>\n";
 648         } else {
 649             print "<para>\n";
 650         }
 651         output_highlight($args{'sections'}{$section});
 652         if ($section =~ m/EXAMPLE/i) {
 653             print "</programlisting></informalexample>\n";
 654         } else {
 655             print "</para>\n";
 656         }
 657         print "</refsect1>\n";
 658     }
 659 }
 660
 661 # output function in XML DocBook
 662 sub output_function_xml(%) {
 663     my %args = %{$_[0]};
 664     my ($parameter, $section);
 665     my $count;
 666     my $id;
 667
 668     $id = "API-" . $args{'function'};
 669     $id =~ s/[^A-Za-z0-9]/-/g;
 670
 671     print "<refentry id=\"$id\">\n";
 672     print "<refentryinfo>\n";
 673     print " <title>LINUX</title>\n";
 674     print " <productname>Kernel Hackers Manual</productname>\n";
 675     print " <date>$man_date</date>\n";
 676     print "</refentryinfo>\n";
 677     print "<refmeta>\n";
 678     print " <refentrytitle><phrase>" . $args{'function'} . "</phrase></refentrytitle>\n";
 679     print " <manvolnum>9</manvolnum>\n";
 680     print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 681     print "</refmeta>\n";
 682     print "<refnamediv>\n";
 683     print " <refname>" . $args{'function'} . "</refname>\n";
 684     print " <refpurpose>\n";
 685     print "  ";
 686     output_highlight ($args{'purpose'});
 687     print " </refpurpose>\n";
 688     print "</refnamediv>\n";
 689
 690     print "<refsynopsisdiv>\n";
 691     print " <title>Synopsis</title>\n";
 692     print "  <funcsynopsis><funcprototype>\n";
 693     print "   <funcdef>" . $args{'functiontype'} . " ";
 694     print "<function>" . $args{'function'} . " </function></funcdef>\n";
 695
 696     $count = 0;
 697     if ($#{$args{'parameterlist'}} >= 0) {
 698         foreach $parameter (@{$args{'parameterlist'}}) {
 699             $type = $args{'parametertypes'}{$parameter};
 700             if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 701                 # pointer-to-function
 702                 print "   <paramdef>$1<parameter>$parameter</parameter>)\n";
 703                 print "     <funcparams>$2</funcparams></paramdef>\n";
 704             } else {
 705                 print "   <paramdef>" . $type;
 706                 print " <parameter>$parameter</parameter></paramdef>\n";
 707             }
 708         }
 709     } else {
 710         print "  <void/>\n";
 711     }
 712     print "  </funcprototype></funcsynopsis>\n";
 713     print "</refsynopsisdiv>\n";
 714
 715     # print parameters
 716     print "<refsect1>\n <title>Arguments</title>\n";
 717     if ($#{$args{'parameterlist'}} >= 0) {
 718         print " <variablelist>\n";
 719         foreach $parameter (@{$args{'parameterlist'}}) {
 720             my $parameter_name = $parameter;
 721             $parameter_name =~ s/\[.*//;
 722
 723             print "  <varlistentry>\n   <term><parameter>$parameter</parameter></term>\n";
 724             print "   <listitem>\n    <para>\n";
 725             $lineprefix="     ";
 726             output_highlight($args{'parameterdescs'}{$parameter_name});
 727             print "    </para>\n   </listitem>\n  </varlistentry>\n";
 728         }
 729         print " </variablelist>\n";
 730     } else {
 731         print " <para>\n  None\n </para>\n";
 732     }
 733     print "</refsect1>\n";
 734
 735     output_section_xml(@_);
 736     print "</refentry>\n\n";
 737 }
 738
 739 # output struct in XML DocBook
 740 sub output_struct_xml(%) {
 741     my %args = %{$_[0]};
 742     my ($parameter, $section);
 743     my $id;
 744
 745     $id = "API-struct-" . $args{'struct'};
 746     $id =~ s/[^A-Za-z0-9]/-/g;
 747
 748     print "<refentry id=\"$id\">\n";
 749     print "<refentryinfo>\n";
 750     print " <title>LINUX</title>\n";
 751     print " <productname>Kernel Hackers Manual</productname>\n";
 752     print " <date>$man_date</date>\n";
 753     print "</refentryinfo>\n";
 754     print "<refmeta>\n";
 755     print " <refentrytitle><phrase>" . $args{'type'} . " " . $args{'struct'} . "</phrase></refentrytitle>\n";
 756     print " <manvolnum>9</manvolnum>\n";
 757     print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 758     print "</refmeta>\n";
 759     print "<refnamediv>\n";
 760     print " <refname>" . $args{'type'} . " " . $args{'struct'} . "</refname>\n";
 761     print " <refpurpose>\n";
 762     print "  ";
 763     output_highlight ($args{'purpose'});
 764     print " </refpurpose>\n";
 765     print "</refnamediv>\n";
 766
 767     print "<refsynopsisdiv>\n";
 768     print " <title>Synopsis</title>\n";
 769     print "  <programlisting>\n";
 770     print $args{'type'} . " " . $args{'struct'} . " {\n";
 771     foreach $parameter (@{$args{'parameterlist'}}) {
 772         if ($parameter =~ /^#/) {
 773             print "$parameter\n";
 774             next;
 775         }
 776
 777         my $parameter_name = $parameter;
 778         $parameter_name =~ s/\[.*//;
 779
 780         defined($args{'parameterdescs'}{$parameter_name}) || next;
 781         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 782         $type = $args{'parametertypes'}{$parameter};
 783         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 784             # pointer-to-function
 785             print "  $1 $parameter) ($2);\n";
 786         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
 787             # bitfield
 788             print "  $1 $parameter$2;\n";
 789         } else {
 790             print "  " . $type . " " . $parameter . ";\n";
 791         }
 792     }
 793     print "};";
 794     print "  </programlisting>\n";
 795     print "</refsynopsisdiv>\n";
 796
 797     print " <refsect1>\n";
 798     print "  <title>Members</title>\n";
 799
 800     if ($#{$args{'parameterlist'}} >= 0) {
 801     print "  <variablelist>\n";
 802     foreach $parameter (@{$args{'parameterlist'}}) {
 803       ($parameter =~ /^#/) && next;
 804
 805       my $parameter_name = $parameter;
 806       $parameter_name =~ s/\[.*//;
 807
 808       defined($args{'parameterdescs'}{$parameter_name}) || next;
 809       ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 810       print "    <varlistentry>";
 811       print "      <term>$parameter</term>\n";
 812       print "      <listitem><para>\n";
 813       output_highlight($args{'parameterdescs'}{$parameter_name});
 814       print "      </para></listitem>\n";
 815       print "    </varlistentry>\n";
 816     }
 817     print "  </variablelist>\n";
 818     } else {
 819         print " <para>\n  None\n </para>\n";
 820     }
 821     print " </refsect1>\n";
 822
 823     output_section_xml(@_);
 824
 825     print "</refentry>\n\n";
 826 }
 827
 828 # output enum in XML DocBook
 829 sub output_enum_xml(%) {
 830     my %args = %{$_[0]};
 831     my ($parameter, $section);
 832     my $count;
 833     my $id;
 834
 835     $id = "API-enum-" . $args{'enum'};
 836     $id =~ s/[^A-Za-z0-9]/-/g;
 837
 838     print "<refentry id=\"$id\">\n";
 839     print "<refentryinfo>\n";
 840     print " <title>LINUX</title>\n";
 841     print " <productname>Kernel Hackers Manual</productname>\n";
 842     print " <date>$man_date</date>\n";
 843     print "</refentryinfo>\n";
 844     print "<refmeta>\n";
 845     print " <refentrytitle><phrase>enum " . $args{'enum'} . "</phrase></refentrytitle>\n";
 846     print " <manvolnum>9</manvolnum>\n";
 847     print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 848     print "</refmeta>\n";
 849     print "<refnamediv>\n";
 850     print " <refname>enum " . $args{'enum'} . "</refname>\n";
 851     print " <refpurpose>\n";
 852     print "  ";
 853     output_highlight ($args{'purpose'});
 854     print " </refpurpose>\n";
 855     print "</refnamediv>\n";
 856
 857     print "<refsynopsisdiv>\n";
 858     print " <title>Synopsis</title>\n";
 859     print "  <programlisting>\n";
 860     print "enum " . $args{'enum'} . " {\n";
 861     $count = 0;
 862     foreach $parameter (@{$args{'parameterlist'}}) {
 863         print "  $parameter";
 864         if ($count != $#{$args{'parameterlist'}}) {
 865             $count++;
 866             print ",";
 867         }
 868         print "\n";
 869     }
 870     print "};";
 871     print "  </programlisting>\n";
 872     print "</refsynopsisdiv>\n";
 873
 874     print "<refsect1>\n";
 875     print " <title>Constants</title>\n";
 876     print "  <variablelist>\n";
 877     foreach $parameter (@{$args{'parameterlist'}}) {
 878       my $parameter_name = $parameter;
 879       $parameter_name =~ s/\[.*//;
 880
 881       print "    <varlistentry>";
 882       print "      <term>$parameter</term>\n";
 883       print "      <listitem><para>\n";
 884       output_highlight($args{'parameterdescs'}{$parameter_name});
 885       print "      </para></listitem>\n";
 886       print "    </varlistentry>\n";
 887     }
 888     print "  </variablelist>\n";
 889     print "</refsect1>\n";
 890
 891     output_section_xml(@_);
 892
 893     print "</refentry>\n\n";
 894 }
 895
 896 # output typedef in XML DocBook
 897 sub output_typedef_xml(%) {
 898     my %args = %{$_[0]};
 899     my ($parameter, $section);
 900     my $id;
 901
 902     $id = "API-typedef-" . $args{'typedef'};
 903     $id =~ s/[^A-Za-z0-9]/-/g;
 904
 905     print "<refentry id=\"$id\">\n";
 906     print "<refentryinfo>\n";
 907     print " <title>LINUX</title>\n";
 908     print " <productname>Kernel Hackers Manual</productname>\n";
 909     print " <date>$man_date</date>\n";
 910     print "</refentryinfo>\n";
 911     print "<refmeta>\n";
 912     print " <refentrytitle><phrase>typedef " . $args{'typedef'} . "</phrase></refentrytitle>\n";
 913     print " <manvolnum>9</manvolnum>\n";
 914     print "</refmeta>\n";
 915     print "<refnamediv>\n";
 916     print " <refname>typedef " . $args{'typedef'} . "</refname>\n";
 917     print " <refpurpose>\n";
 918     print "  ";
 919     output_highlight ($args{'purpose'});
 920     print " </refpurpose>\n";
 921     print "</refnamediv>\n";
 922
 923     print "<refsynopsisdiv>\n";
 924     print " <title>Synopsis</title>\n";
 925     print "  <synopsis>typedef " . $args{'typedef'} . ";</synopsis>\n";
 926     print "</refsynopsisdiv>\n";
 927
 928     output_section_xml(@_);
 929
 930     print "</refentry>\n\n";
 931 }
 932
 933 # output in XML DocBook
 934 sub output_blockhead_xml(%) {
 935     my %args = %{$_[0]};
 936     my ($parameter, $section);
 937     my $count;
 938
 939     my $id = $args{'module'};
 940     $id =~ s/[^A-Za-z0-9]/-/g;
 941
 942     # print out each section
 943     $lineprefix="   ";
 944     foreach $section (@{$args{'sectionlist'}}) {
 945         if (!$args{'content-only'}) {
 946                 print "<refsect1>\n <title>$section</title>\n";
 947         }
 948         if ($section =~ m/EXAMPLE/i) {
 949             print "<example><para>\n";
 950         } else {
 951             print "<para>\n";
 952         }
 953         output_highlight($args{'sections'}{$section});
 954         if ($section =~ m/EXAMPLE/i) {
 955             print "</para></example>\n";
 956         } else {
 957             print "</para>";
 958         }
 959         if (!$args{'content-only'}) {
 960                 print "\n</refsect1>\n";
 961         }
 962     }
 963
 964     print "\n\n";
 965 }
 966
 967 # output in XML DocBook
 968 sub output_function_gnome {
 969     my %args = %{$_[0]};
 970     my ($parameter, $section);
 971     my $count;
 972     my $id;
 973
 974     $id = $args{'module'} . "-" . $args{'function'};
 975     $id =~ s/[^A-Za-z0-9]/-/g;
 976
 977     print "<sect2>\n";
 978     print " <title id=\"$id\">" . $args{'function'} . "</title>\n";
 979
 980     print "  <funcsynopsis>\n";
 981     print "   <funcdef>" . $args{'functiontype'} . " ";
 982     print "<function>" . $args{'function'} . " ";
 983     print "</function></funcdef>\n";
 984
 985     $count = 0;
 986     if ($#{$args{'parameterlist'}} >= 0) {
 987         foreach $parameter (@{$args{'parameterlist'}}) {
 988             $type = $args{'parametertypes'}{$parameter};
 989             if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 990                 # pointer-to-function
 991                 print "   <paramdef>$1 <parameter>$parameter</parameter>)\n";
 992                 print "     <funcparams>$2</funcparams></paramdef>\n";
 993             } else {
 994                 print "   <paramdef>" . $type;
 995                 print " <parameter>$parameter</parameter></paramdef>\n";
 996             }
 997         }
 998     } else {
 999         print "  <void>\n";
1000     }
1001     print "  </funcsynopsis>\n";
1002     if ($#{$args{'parameterlist'}} >= 0) {
1003         print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
1004         print "<tgroup cols=\"2\">\n";
1005         print "<colspec colwidth=\"2*\">\n";
1006         print "<colspec colwidth=\"8*\">\n";
1007         print "<tbody>\n";
1008         foreach $parameter (@{$args{'parameterlist'}}) {
1009             my $parameter_name = $parameter;
1010             $parameter_name =~ s/\[.*//;
1011
1012             print "  <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
1013             print "   <entry>\n";
1014             $lineprefix="     ";
1015             output_highlight($args{'parameterdescs'}{$parameter_name});
1016             print "    </entry></row>\n";
1017         }
1018         print " </tbody></tgroup></informaltable>\n";
1019     } else {
1020         print " <para>\n  None\n </para>\n";
1021     }
1022
1023     # print out each section
1024     $lineprefix="   ";
1025     foreach $section (@{$args{'sectionlist'}}) {
1026         print "<simplesect>\n <title>$section</title>\n";
1027         if ($section =~ m/EXAMPLE/i) {
1028             print "<example><programlisting>\n";
1029         } else {
1030         }
1031         print "<para>\n";
1032         output_highlight($args{'sections'}{$section});
1033         print "</para>\n";
1034         if ($section =~ m/EXAMPLE/i) {
1035             print "</programlisting></example>\n";
1036         } else {
1037         }
1038         print " </simplesect>\n";
1039     }
1040
1041     print "</sect2>\n\n";
1042 }
1043
1044 ##
1045 # output function in man
1046 sub output_function_man(%) {
1047     my %args = %{$_[0]};
1048     my ($parameter, $section);
1049     my $count;
1050
1051     print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
1052
1053     print ".SH NAME\n";
1054     print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
1055
1056     print ".SH SYNOPSIS\n";
1057     if ($args{'functiontype'} ne "") {
1058         print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
1059     } else {
1060         print ".B \"" . $args{'function'} . "\n";
1061     }
1062     $count = 0;
1063     my $parenth = "(";
1064     my $post = ",";
1065     foreach my $parameter (@{$args{'parameterlist'}}) {
1066         if ($count == $#{$args{'parameterlist'}}) {
1067             $post = ");";
1068         }
1069         $type = $args{'parametertypes'}{$parameter};
1070         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1071             # pointer-to-function
1072             print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
1073         } else {
1074             $type =~ s/([^\*])$/$1 /;
1075             print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
1076         }
1077         $count++;
1078         $parenth = "";
1079     }
1080
1081     print ".SH ARGUMENTS\n";
1082     foreach $parameter (@{$args{'parameterlist'}}) {
1083         my $parameter_name = $parameter;
1084         $parameter_name =~ s/\[.*//;
1085
1086         print ".IP \"" . $parameter . "\" 12\n";
1087         output_highlight($args{'parameterdescs'}{$parameter_name});
1088     }
1089     foreach $section (@{$args{'sectionlist'}}) {
1090         print ".SH \"", uc $section, "\"\n";
1091         output_highlight($args{'sections'}{$section});
1092     }
1093 }
1094
1095 ##
1096 # output enum in man
1097 sub output_enum_man(%) {
1098     my %args = %{$_[0]};
1099     my ($parameter, $section);
1100     my $count;
1101
1102     print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
1103
1104     print ".SH NAME\n";
1105     print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
1106
1107     print ".SH SYNOPSIS\n";
1108     print "enum " . $args{'enum'} . " {\n";
1109     $count = 0;
1110     foreach my $parameter (@{$args{'parameterlist'}}) {
1111         print ".br\n.BI \"    $parameter\"\n";
1112         if ($count == $#{$args{'parameterlist'}}) {
1113             print "\n};\n";
1114             last;
1115         }
1116         else {
1117             print ", \n.br\n";
1118         }
1119         $count++;
1120     }
1121
1122     print ".SH Constants\n";
1123     foreach $parameter (@{$args{'parameterlist'}}) {
1124         my $parameter_name = $parameter;
1125         $parameter_name =~ s/\[.*//;
1126
1127         print ".IP \"" . $parameter . "\" 12\n";
1128         output_highlight($args{'parameterdescs'}{$parameter_name});
1129     }
1130     foreach $section (@{$args{'sectionlist'}}) {
1131         print ".SH \"$section\"\n";
1132         output_highlight($args{'sections'}{$section});
1133     }
1134 }
1135
1136 ##
1137 # output struct in man
1138 sub output_struct_man(%) {
1139     my %args = %{$_[0]};
1140     my ($parameter, $section);
1141
1142     print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
1143
1144     print ".SH NAME\n";
1145     print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
1146
1147     print ".SH SYNOPSIS\n";
1148     print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
1149
1150     foreach my $parameter (@{$args{'parameterlist'}}) {
1151         if ($parameter =~ /^#/) {
1152             print ".BI \"$parameter\"\n.br\n";
1153             next;
1154         }
1155         my $parameter_name = $parameter;
1156         $parameter_name =~ s/\[.*//;
1157
1158         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1159         $type = $args{'parametertypes'}{$parameter};
1160         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1161             # pointer-to-function
1162             print ".BI \"    " . $1 . "\" " . $parameter . " \") (" . $2 . ")" . "\"\n;\n";
1163         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1164             # bitfield
1165             print ".BI \"    " . $1 . "\ \" " . $parameter . $2 . " \"" . "\"\n;\n";
1166         } else {
1167             $type =~ s/([^\*])$/$1 /;
1168             print ".BI \"    " . $type . "\" " . $parameter . " \"" . "\"\n;\n";
1169         }
1170         print "\n.br\n";
1171     }
1172     print "};\n.br\n";
1173
1174     print ".SH Members\n";
1175     foreach $parameter (@{$args{'parameterlist'}}) {
1176         ($parameter =~ /^#/) && next;
1177
1178         my $parameter_name = $parameter;
1179         $parameter_name =~ s/\[.*//;
1180
1181         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1182         print ".IP \"" . $parameter . "\" 12\n";
1183         output_highlight($args{'parameterdescs'}{$parameter_name});
1184     }
1185     foreach $section (@{$args{'sectionlist'}}) {
1186         print ".SH \"$section\"\n";
1187         output_highlight($args{'sections'}{$section});
1188     }
1189 }
1190
1191 ##
1192 # output typedef in man
1193 sub output_typedef_man(%) {
1194     my %args = %{$_[0]};
1195     my ($parameter, $section);
1196
1197     print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
1198
1199     print ".SH NAME\n";
1200     print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
1201
1202     foreach $section (@{$args{'sectionlist'}}) {
1203         print ".SH \"$section\"\n";
1204         output_highlight($args{'sections'}{$section});
1205     }
1206 }
1207
1208 sub output_blockhead_man(%) {
1209     my %args = %{$_[0]};
1210     my ($parameter, $section);
1211     my $count;
1212
1213     print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
1214
1215     foreach $section (@{$args{'sectionlist'}}) {
1216         print ".SH \"$section\"\n";
1217         output_highlight($args{'sections'}{$section});
1218     }
1219 }
1220
1221 ##
1222 # output in text
1223 sub output_function_text(%) {
1224     my %args = %{$_[0]};
1225     my ($parameter, $section);
1226     my $start;
1227
1228     print "Name:\n\n";
1229     print $args{'function'} . " - " . $args{'purpose'} . "\n";
1230
1231     print "\nSynopsis:\n\n";
1232     if ($args{'functiontype'} ne "") {
1233         $start = $args{'functiontype'} . " " . $args{'function'} . " (";
1234     } else {
1235         $start = $args{'function'} . " (";
1236     }
1237     print $start;
1238
1239     my $count = 0;
1240     foreach my $parameter (@{$args{'parameterlist'}}) {
1241         $type = $args{'parametertypes'}{$parameter};
1242         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1243             # pointer-to-function
1244             print $1 . $parameter . ") (" . $2;
1245         } else {
1246             print $type . " " . $parameter;
1247         }
1248         if ($count != $#{$args{'parameterlist'}}) {
1249             $count++;
1250             print ",\n";
1251             print " " x length($start);
1252         } else {
1253             print ");\n\n";
1254         }
1255     }
1256
1257     print "Arguments:\n\n";
1258     foreach $parameter (@{$args{'parameterlist'}}) {
1259         my $parameter_name = $parameter;
1260         $parameter_name =~ s/\[.*//;
1261
1262         print $parameter . "\n\t" . $args{'parameterdescs'}{$parameter_name} . "\n";
1263     }
1264     output_section_text(@_);
1265 }
1266
1267 #output sections in text
1268 sub output_section_text(%) {
1269     my %args = %{$_[0]};
1270     my $section;
1271
1272     print "\n";
1273     foreach $section (@{$args{'sectionlist'}}) {
1274         print "$section:\n\n";
1275         output_highlight($args{'sections'}{$section});
1276     }
1277     print "\n\n";
1278 }
1279
1280 # output enum in text
1281 sub output_enum_text(%) {
1282     my %args = %{$_[0]};
1283     my ($parameter);
1284     my $count;
1285     print "Enum:\n\n";
1286
1287     print "enum " . $args{'enum'} . " - " . $args{'purpose'} . "\n\n";
1288     print "enum " . $args{'enum'} . " {\n";
1289     $count = 0;
1290     foreach $parameter (@{$args{'parameterlist'}}) {
1291         print "\t$parameter";
1292         if ($count != $#{$args{'parameterlist'}}) {
1293             $count++;
1294             print ",";
1295         }
1296         print "\n";
1297     }
1298     print "};\n\n";
1299
1300     print "Constants:\n\n";
1301     foreach $parameter (@{$args{'parameterlist'}}) {
1302         print "$parameter\n\t";
1303         print $args{'parameterdescs'}{$parameter} . "\n";
1304     }
1305
1306     output_section_text(@_);
1307 }
1308
1309 # output typedef in text
1310 sub output_typedef_text(%) {
1311     my %args = %{$_[0]};
1312     my ($parameter);
1313     my $count;
1314     print "Typedef:\n\n";
1315
1316     print "typedef " . $args{'typedef'} . " - " . $args{'purpose'} . "\n";
1317     output_section_text(@_);
1318 }
1319
1320 # output struct as text
1321 sub output_struct_text(%) {
1322     my %args = %{$_[0]};
1323     my ($parameter);
1324
1325     print $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "\n\n";
1326     print $args{'type'} . " " . $args{'struct'} . " {\n";
1327     foreach $parameter (@{$args{'parameterlist'}}) {
1328         if ($parameter =~ /^#/) {
1329             print "$parameter\n";
1330             next;
1331         }
1332
1333         my $parameter_name = $parameter;
1334         $parameter_name =~ s/\[.*//;
1335
1336         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1337         $type = $args{'parametertypes'}{$parameter};
1338         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1339             # pointer-to-function
1340             print "\t$1 $parameter) ($2);\n";
1341         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1342             # bitfield
1343             print "\t$1 $parameter$2;\n";
1344         } else {
1345             print "\t" . $type . " " . $parameter . ";\n";
1346         }
1347     }
1348     print "};\n\n";
1349
1350     print "Members:\n\n";
1351     foreach $parameter (@{$args{'parameterlist'}}) {
1352         ($parameter =~ /^#/) && next;
1353
1354         my $parameter_name = $parameter;
1355         $parameter_name =~ s/\[.*//;
1356
1357         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1358         print "$parameter\n\t";
1359         print $args{'parameterdescs'}{$parameter_name} . "\n";
1360     }
1361     print "\n";
1362     output_section_text(@_);
1363 }
1364
1365 sub output_blockhead_text(%) {
1366     my %args = %{$_[0]};
1367     my ($parameter, $section);
1368
1369     foreach $section (@{$args{'sectionlist'}}) {
1370         print " $section:\n";
1371         print "    -> ";
1372         output_highlight($args{'sections'}{$section});
1373     }
1374 }
1375
1376 ## list mode output functions
1377
1378 sub output_function_list(%) {
1379     my %args = %{$_[0]};
1380
1381     print $args{'function'} . "\n";
1382 }
1383
1384 # output enum in list
1385 sub output_enum_list(%) {
1386     my %args = %{$_[0]};
1387     print $args{'enum'} . "\n";
1388 }
1389
1390 # output typedef in list
1391 sub output_typedef_list(%) {
1392     my %args = %{$_[0]};
1393     print $args{'typedef'} . "\n";
1394 }
1395
1396 # output struct as list
1397 sub output_struct_list(%) {
1398     my %args = %{$_[0]};
1399
1400     print $args{'struct'} . "\n";
1401 }
1402
1403 sub output_blockhead_list(%) {
1404     my %args = %{$_[0]};
1405     my ($parameter, $section);
1406
1407     foreach $section (@{$args{'sectionlist'}}) {
1408         print "DOC: $section\n";
1409     }
1410 }
1411
1412 ##
1413 # generic output function for all types (function, struct/union, typedef, enum);
1414 # calls the generated, variable output_ function name based on
1415 # functype and output_mode
1416 sub output_declaration {
1417     no strict 'refs';
1418     my $name = shift;
1419     my $functype = shift;
1420     my $func = "output_${functype}_$output_mode";
1421     if (($function_only==0) ||
1422         ( $function_only == 1 && defined($function_table{$name})) ||
1423         ( $function_only == 2 && !defined($function_table{$name})))
1424     {
1425         &$func(@_);
1426         $section_counter++;
1427     }
1428 }
1429
1430 ##
1431 # generic output function - calls the right one based on current output mode.
1432 sub output_blockhead {
1433     no strict 'refs';
1434     my $func = "output_blockhead_" . $output_mode;
1435     &$func(@_);
1436     $section_counter++;
1437 }
1438
1439 ##
1440 # takes a declaration (struct, union, enum, typedef) and
1441 # invokes the right handler. NOT called for functions.
1442 sub dump_declaration($$) {
1443     no strict 'refs';
1444     my ($prototype, $file) = @_;
1445     my $func = "dump_" . $decl_type;
1446     &$func(@_);
1447 }
1448
1449 sub dump_union($$) {
1450     dump_struct(@_);
1451 }
1452
1453 sub dump_struct($$) {
1454     my $x = shift;
1455     my $file = shift;
1456     my $nested;
1457
1458     if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
1459         #my $decl_type = $1;
1460         $declaration_name = $2;
1461         my $members = $3;
1462
1463         # ignore embedded structs or unions
1464         $members =~ s/({.*})//g;
1465         $nested = $1;
1466
1467         # ignore members marked private:
1468         $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gos;
1469         $members =~ s/\/\*\s*private:.*//gos;
1470         # strip comments:
1471         $members =~ s/\/\*.*?\*\///gos;
1472         $nested =~ s/\/\*.*?\*\///gos;
1473         # strip kmemcheck_bitfield_{begin,end}.*;
1474         $members =~ s/kmemcheck_bitfield_.*?;//gos;
1475         # strip attributes
1476         $members =~ s/__aligned\s*\(\d+\)//gos;
1477
1478         create_parameterlist($members, ';', $file);
1479         check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);
1480
1481         output_declaration($declaration_name,
1482                            'struct',
1483                            {'struct' => $declaration_name,
1484                             'module' => $modulename,
1485                             'parameterlist' => \@parameterlist,
1486                             'parameterdescs' => \%parameterdescs,
1487                             'parametertypes' => \%parametertypes,
1488                             'sectionlist' => \@sectionlist,
1489                             'sections' => \%sections,
1490                             'purpose' => $declaration_purpose,
1491                             'type' => $decl_type
1492                            });
1493     }
1494     else {
1495         print STDERR "Error(${file}:$.): Cannot parse struct or union!\n";
1496         ++$errors;
1497     }
1498 }
1499
1500 sub dump_enum($$) {
1501     my $x = shift;
1502     my $file = shift;
1503
1504     $x =~ s@/\*.*?\*/@@gos;     # strip comments.
1505     $x =~ s/^#\s*define\s+.*$//; # strip #define macros inside enums
1506
1507     if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
1508         $declaration_name = $1;
1509         my $members = $2;
1510
1511         foreach my $arg (split ',', $members) {
1512             $arg =~ s/^\s*(\w+).*/$1/;
1513             push @parameterlist, $arg;
1514             if (!$parameterdescs{$arg}) {
1515                 $parameterdescs{$arg} = $undescribed;
1516                 print STDERR "Warning(${file}:$.): Enum value '$arg' ".
1517                     "not described in enum '$declaration_name'\n";
1518             }
1519
1520         }
1521
1522         output_declaration($declaration_name,
1523                            'enum',
1524                            {'enum' => $declaration_name,
1525                             'module' => $modulename,
1526                             'parameterlist' => \@parameterlist,
1527                             'parameterdescs' => \%parameterdescs,
1528                             'sectionlist' => \@sectionlist,
1529                             'sections' => \%sections,
1530                             'purpose' => $declaration_purpose
1531                            });
1532     }
1533     else {
1534         print STDERR "Error(${file}:$.): Cannot parse enum!\n";
1535         ++$errors;
1536     }
1537 }
1538
1539 sub dump_typedef($$) {
1540     my $x = shift;
1541     my $file = shift;
1542
1543     $x =~ s@/\*.*?\*/@@gos;     # strip comments.
1544     while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1545         $x =~ s/\(*.\)\s*;$/;/;
1546         $x =~ s/\[*.\]\s*;$/;/;
1547     }
1548
1549     if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1550         $declaration_name = $1;
1551
1552         output_declaration($declaration_name,
1553                            'typedef',
1554                            {'typedef' => $declaration_name,
1555                             'module' => $modulename,
1556                             'sectionlist' => \@sectionlist,
1557                             'sections' => \%sections,
1558                             'purpose' => $declaration_purpose
1559                            });
1560     }
1561     else {
1562         print STDERR "Error(${file}:$.): Cannot parse typedef!\n";
1563         ++$errors;
1564     }
1565 }
1566
1567 sub save_struct_actual($) {
1568     my $actual = shift;
1569
1570     # strip all spaces from the actual param so that it looks like one string item
1571     $actual =~ s/\s*//g;
1572     $struct_actual = $struct_actual . $actual . " ";
1573 }
1574
1575 sub create_parameterlist($$$) {
1576     my $args = shift;
1577     my $splitter = shift;
1578     my $file = shift;
1579     my $type;
1580     my $param;
1581
1582     # temporarily replace commas inside function pointer definition
1583     while ($args =~ /(\([^\),]+),/) {
1584         $args =~ s/(\([^\),]+),/$1#/g;
1585     }
1586
1587     foreach my $arg (split($splitter, $args)) {
1588         # strip comments
1589         $arg =~ s/\/\*.*\*\///;
1590         # strip leading/trailing spaces
1591         $arg =~ s/^\s*//;
1592         $arg =~ s/\s*$//;
1593         $arg =~ s/\s+/ /;
1594
1595         if ($arg =~ /^#/) {
1596             # Treat preprocessor directive as a typeless variable just to fill
1597             # corresponding data structures "correctly". Catch it later in
1598             # output_* subs.
1599             push_parameter($arg, "", $file);
1600         } elsif ($arg =~ m/\(.+\)\s*\(/) {
1601             # pointer-to-function
1602             $arg =~ tr/#/,/;
1603             $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
1604             $param = $1;
1605             $type = $arg;
1606             $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1607             save_struct_actual($param);
1608             push_parameter($param, $type, $file);
1609         } elsif ($arg) {
1610             $arg =~ s/\s*:\s*/:/g;
1611             $arg =~ s/\s*\[/\[/g;
1612
1613             my @args = split('\s*,\s*', $arg);
1614             if ($args[0] =~ m/\*/) {
1615                 $args[0] =~ s/(\*+)\s*/ $1/;
1616             }
1617
1618             my @first_arg;
1619             if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1620                     shift @args;
1621                     push(@first_arg, split('\s+', $1));
1622                     push(@first_arg, $2);
1623             } else {
1624                     @first_arg = split('\s+', shift @args);
1625             }
1626
1627             unshift(@args, pop @first_arg);
1628             $type = join " ", @first_arg;
1629
1630             foreach $param (@args) {
1631                 if ($param =~ m/^(\*+)\s*(.*)/) {
1632                     save_struct_actual($2);
1633                     push_parameter($2, "$type $1", $file);
1634                 }
1635                 elsif ($param =~ m/(.*?):(\d+)/) {
1636                     if ($type ne "") { # skip unnamed bit-fields
1637                         save_struct_actual($1);
1638                         push_parameter($1, "$type:$2", $file)
1639                     }
1640                 }
1641                 else {
1642                     save_struct_actual($param);
1643                     push_parameter($param, $type, $file);
1644                 }
1645             }
1646         }
1647     }
1648 }
1649
1650 sub push_parameter($$$) {
1651         my $param = shift;
1652         my $type = shift;
1653         my $file = shift;
1654
1655         if (($anon_struct_union == 1) && ($type eq "") &&
1656             ($param eq "}")) {
1657                 return;         # ignore the ending }; from anon. struct/union
1658         }
1659
1660         $anon_struct_union = 0;
1661         my $param_name = $param;
1662         $param_name =~ s/\[.*//;
1663
1664         if ($type eq "" && $param =~ /\.\.\.$/)
1665         {
1666             if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1667                 $parameterdescs{$param} = "variable arguments";
1668             }
1669         }
1670         elsif ($type eq "" && ($param eq "" or $param eq "void"))
1671         {
1672             $param="void";
1673             $parameterdescs{void} = "no arguments";
1674         }
1675         elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1676         # handle unnamed (anonymous) union or struct:
1677         {
1678                 $type = $param;
1679                 $param = "{unnamed_" . $param . "}";
1680                 $parameterdescs{$param} = "anonymous\n";
1681                 $anon_struct_union = 1;
1682         }
1683
1684         # warn if parameter has no description
1685         # (but ignore ones starting with # as these are not parameters
1686         # but inline preprocessor statements);
1687         # also ignore unnamed structs/unions;
1688         if (!$anon_struct_union) {
1689         if (!defined $parameterdescs{$param_name} && $param_name !~ /^#/) {
1690
1691             $parameterdescs{$param_name} = $undescribed;
1692
1693             if (($type eq 'function') || ($type eq 'enum')) {
1694                 print STDERR "Warning(${file}:$.): Function parameter ".
1695                     "or member '$param' not " .
1696                     "described in '$declaration_name'\n";
1697             }
1698             print STDERR "Warning(${file}:$.):" .
1699                          " No description found for parameter '$param'\n";
1700             ++$warnings;
1701         }
1702         }
1703
1704         # strip spaces from $param so that it is one continous string
1705         # on @parameterlist;
1706         # this fixes a problem where check_sections() cannot find
1707         # a parameter like "addr[6 + 2]" because it actually appears
1708         # as "addr[6", "+", "2]" on the parameter list;
1709         # but it's better to maintain the param string unchanged for output,
1710         # so just weaken the string compare in check_sections() to ignore
1711         # "[blah" in a parameter string;
1712         ###$param =~ s/\s*//g;
1713         push @parameterlist, $param;
1714         $parametertypes{$param} = $type;
1715 }
1716
1717 sub check_sections($$$$$$) {
1718         my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck, $nested) = @_;
1719         my @sects = split ' ', $sectcheck;
1720         my @prms = split ' ', $prmscheck;
1721         my $err;
1722         my ($px, $sx);
1723         my $prm_clean;          # strip trailing "[array size]" and/or beginning "*"
1724
1725         foreach $sx (0 .. $#sects) {
1726                 $err = 1;
1727                 foreach $px (0 .. $#prms) {
1728                         $prm_clean = $prms[$px];
1729                         $prm_clean =~ s/\[.*\]//;
1730                         $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
1731                         # ignore array size in a parameter string;
1732                         # however, the original param string may contain
1733                         # spaces, e.g.:  addr[6 + 2]
1734                         # and this appears in @prms as "addr[6" since the
1735                         # parameter list is split at spaces;
1736                         # hence just ignore "[..." for the sections check;
1737                         $prm_clean =~ s/\[.*//;
1738
1739                         ##$prm_clean =~ s/^\**//;
1740                         if ($prm_clean eq $sects[$sx]) {
1741                                 $err = 0;
1742                                 last;
1743                         }
1744                 }
1745                 if ($err) {
1746                         if ($decl_type eq "function") {
1747                                 print STDERR "Warning(${file}:$.): " .
1748                                         "Excess function parameter " .
1749                                         "'$sects[$sx]' " .
1750                                         "description in '$decl_name'\n";
1751                                 ++$warnings;
1752                         } else {
1753                                 if ($nested !~ m/\Q$sects[$sx]\E/) {
1754                                     print STDERR "Warning(${file}:$.): " .
1755                                         "Excess struct/union/enum/typedef member " .
1756                                         "'$sects[$sx]' " .
1757                                         "description in '$decl_name'\n";
1758                                     ++$warnings;
1759                                 }
1760                         }
1761                 }
1762         }
1763 }
1764
1765 ##
1766 # takes a function prototype and the name of the current file being
1767 # processed and spits out all the details stored in the global
1768 # arrays/hashes.
1769 sub dump_function($$) {
1770     my $prototype = shift;
1771     my $file = shift;
1772
1773     $prototype =~ s/^static +//;
1774     $prototype =~ s/^extern +//;
1775     $prototype =~ s/^asmlinkage +//;
1776     $prototype =~ s/^inline +//;
1777     $prototype =~ s/^__inline__ +//;
1778     $prototype =~ s/^__inline +//;
1779     $prototype =~ s/^__always_inline +//;
1780     $prototype =~ s/^noinline +//;
1781     $prototype =~ s/__devinit +//;
1782     $prototype =~ s/__init +//;
1783     $prototype =~ s/__init_or_module +//;
1784     $prototype =~ s/^#\s*define\s+//; #ak added
1785     $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//;
1786
1787     # Yes, this truly is vile.  We are looking for:
1788     # 1. Return type (may be nothing if we're looking at a macro)
1789     # 2. Function name
1790     # 3. Function parameters.
1791     #
1792     # All the while we have to watch out for function pointer parameters
1793     # (which IIRC is what the two sections are for), C types (these
1794     # regexps don't even start to express all the possibilities), and
1795     # so on.
1796     #
1797     # If you mess with these regexps, it's a good idea to check that
1798     # the following functions' documentation still comes out right:
1799     # - parport_register_device (function pointer parameters)
1800     # - atomic_set (macro)
1801     # - pci_match_device, __copy_to_user (long return type)
1802
1803     if ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1804         $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1805         $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1806         $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1807         $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1808         $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1809         $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1810         $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1811         $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1812         $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1813         $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1814         $prototype =~ m/^(\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1815         $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1816         $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1817         $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1818         $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1819         $prototype =~ m/^(\w+\s+\w+\s*\*\s*\w+\s*\*\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
1820         $return_type = $1;
1821         $declaration_name = $2;
1822         my $args = $3;
1823
1824         create_parameterlist($args, ',', $file);
1825     } else {
1826         print STDERR "Error(${file}:$.): cannot understand prototype: '$prototype'\n";
1827         ++$errors;
1828         return;
1829     }
1830
1831         my $prms = join " ", @parameterlist;
1832         check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");
1833
1834     output_declaration($declaration_name,
1835                        'function',
1836                        {'function' => $declaration_name,
1837                         'module' => $modulename,
1838                         'functiontype' => $return_type,
1839                         'parameterlist' => \@parameterlist,
1840                         'parameterdescs' => \%parameterdescs,
1841                         'parametertypes' => \%parametertypes,
1842                         'sectionlist' => \@sectionlist,
1843                         'sections' => \%sections,
1844                         'purpose' => $declaration_purpose
1845                        });
1846 }
1847
1848 sub process_file($);
1849
1850 # Read the file that maps relative names to absolute names for
1851 # separate source and object directories and for shadow trees.
1852 if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
1853         my ($relname, $absname);
1854         while(<SOURCE_MAP>) {
1855                 chop();
1856                 ($relname, $absname) = (split())[0..1];
1857                 $relname =~ s:^/+::;
1858                 $source_map{$relname} = $absname;
1859         }
1860         close(SOURCE_MAP);
1861 }
1862
1863 foreach (@ARGV) {
1864     chomp;
1865     process_file($_);
1866 }
1867 if ($verbose && $errors) {
1868   print STDERR "$errors errors\n";
1869 }
1870 if ($verbose && $warnings) {
1871   print STDERR "$warnings warnings\n";
1872 }
1873
1874 exit($errors);
1875
1876 sub reset_state {
1877     $function = "";
1878     %constants = ();
1879     %parameterdescs = ();
1880     %parametertypes = ();
1881     @parameterlist = ();
1882     %sections = ();
1883     @sectionlist = ();
1884     $sectcheck = "";
1885     $struct_actual = "";
1886     $prototype = "";
1887
1888     $state = 0;
1889 }
1890
1891 sub tracepoint_munge($) {
1892         my $file = shift;
1893         my $tracepointname = 0;
1894         my $tracepointargs = 0;
1895
1896         if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
1897                 $tracepointname = $1;
1898         }
1899         if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
1900                 $tracepointname = $1;
1901         }
1902         if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
1903                 $tracepointname = $2;
1904         }
1905         $tracepointname =~ s/^\s+//; #strip leading whitespace
1906         if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
1907                 $tracepointargs = $1;
1908         }
1909         if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
1910                 print STDERR "Warning(${file}:$.): Unrecognized tracepoint format: \n".
1911                              "$prototype\n";
1912         } else {
1913                 $prototype = "static inline void trace_$tracepointname($tracepointargs)";
1914         }
1915 }
1916
1917 sub syscall_munge() {
1918         my $void = 0;
1919
1920         $prototype =~ s@[\r\n\t]+@ @gos; # strip newlines/CR's/tabs
1921 ##      if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1922         if ($prototype =~ m/SYSCALL_DEFINE0/) {
1923                 $void = 1;
1924 ##              $prototype = "long sys_$1(void)";
1925         }
1926
1927         $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1928         if ($prototype =~ m/long (sys_.*?),/) {
1929                 $prototype =~ s/,/\(/;
1930         } elsif ($void) {
1931                 $prototype =~ s/\)/\(void\)/;
1932         }
1933
1934         # now delete all of the odd-number commas in $prototype
1935         # so that arg types & arg names don't have a comma between them
1936         my $count = 0;
1937         my $len = length($prototype);
1938         if ($void) {
1939                 $len = 0;       # skip the for-loop
1940         }
1941         for (my $ix = 0; $ix < $len; $ix++) {
1942                 if (substr($prototype, $ix, 1) eq ',') {
1943                         $count++;
1944                         if ($count % 2 == 1) {
1945                                 substr($prototype, $ix, 1) = ' ';
1946                         }
1947                 }
1948         }
1949 }
1950
1951 sub process_state3_function($$) {
1952     my $x = shift;
1953     my $file = shift;
1954
1955     $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1956
1957     if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1958         # do nothing
1959     }
1960     elsif ($x =~ /([^\{]*)/) {
1961         $prototype .= $1;
1962     }
1963
1964     if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1965         $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
1966         $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1967         $prototype =~ s@^\s+@@gos; # strip leading spaces
1968         if ($prototype =~ /SYSCALL_DEFINE/) {
1969                 syscall_munge();
1970         }
1971         if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
1972             $prototype =~ /DEFINE_SINGLE_EVENT/)
1973         {
1974                 tracepoint_munge($file);
1975         }
1976         dump_function($prototype, $file);
1977         reset_state();
1978     }
1979 }
1980
1981 sub process_state3_type($$) {
1982     my $x = shift;
1983     my $file = shift;
1984
1985     $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1986     $x =~ s@^\s+@@gos; # strip leading spaces
1987     $x =~ s@\s+$@@gos; # strip trailing spaces
1988     $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1989
1990     if ($x =~ /^#/) {
1991         # To distinguish preprocessor directive from regular declaration later.
1992         $x .= ";";
1993     }
1994
1995     while (1) {
1996         if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
1997             $prototype .= $1 . $2;
1998             ($2 eq '{') && $brcount++;
1999             ($2 eq '}') && $brcount--;
2000             if (($2 eq ';') && ($brcount == 0)) {
2001                 dump_declaration($prototype, $file);
2002                 reset_state();
2003                 last;
2004             }
2005             $x = $3;
2006         } else {
2007             $prototype .= $x;
2008             last;
2009         }
2010     }
2011 }
2012
2013 # xml_escape: replace <, >, and & in the text stream;
2014 #
2015 # however, formatting controls that are generated internally/locally in the
2016 # kernel-doc script are not escaped here; instead, they begin life like
2017 # $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
2018 # are converted to their mnemonic-expected output, without the 4 * '\' & ':',
2019 # just before actual output; (this is done by local_unescape())
2020 sub xml_escape($) {
2021         my $text = shift;
2022         if (($output_mode eq "text") || ($output_mode eq "man")) {
2023                 return $text;
2024         }
2025         $text =~ s/\&/\\\\\\amp;/g;
2026         $text =~ s/\</\\\\\\lt;/g;
2027         $text =~ s/\>/\\\\\\gt;/g;
2028         return $text;
2029 }
2030
2031 # convert local escape strings to html
2032 # local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
2033 sub local_unescape($) {
2034         my $text = shift;
2035         if (($output_mode eq "text") || ($output_mode eq "man")) {
2036                 return $text;
2037         }
2038         $text =~ s/\\\\\\\\lt:/</g;
2039         $text =~ s/\\\\\\\\gt:/>/g;
2040         return $text;
2041 }
2042
2043 sub process_file($) {
2044     my $file;
2045     my $identifier;
2046     my $func;
2047     my $descr;
2048     my $in_purpose = 0;
2049     my $initial_section_counter = $section_counter;
2050
2051     if (defined($ENV{'SRCTREE'})) {
2052         $file = "$ENV{'SRCTREE'}" . "/" . "@_";
2053     }
2054     else {
2055         $file = "@_";
2056     }
2057     if (defined($source_map{$file})) {
2058         $file = $source_map{$file};
2059     }
2060
2061     if (!open(IN,"<$file")) {
2062         print STDERR "Error: Cannot open file $file\n";
2063         ++$errors;
2064         return;
2065     }
2066
2067     $. = 1;
2068
2069     $section_counter = 0;
2070     while (<IN>) {
2071         if ($state == 0) {
2072             if (/$doc_start/o) {
2073                 $state = 1;             # next line is always the function name
2074                 $in_doc_sect = 0;
2075             }
2076         } elsif ($state == 1) { # this line is the function name (always)
2077             if (/$doc_block/o) {
2078                 $state = 4;
2079                 $contents = "";
2080                 if ( $1 eq "" ) {
2081                         $section = $section_intro;
2082                 } else {
2083                         $section = $1;
2084                 }
2085             }
2086             elsif (/$doc_decl/o) {
2087                 $identifier = $1;
2088                 if (/\s*([\w\s]+?)\s*-/) {
2089                     $identifier = $1;
2090                 }
2091
2092                 $state = 2;
2093                 if (/-(.*)/) {
2094                     # strip leading/trailing/multiple spaces
2095                     $descr= $1;
2096                     $descr =~ s/^\s*//;
2097                     $descr =~ s/\s*$//;
2098                     $descr =~ s/\s+/ /;
2099                     $declaration_purpose = xml_escape($descr);
2100                     $in_purpose = 1;
2101                 } else {
2102                     $declaration_purpose = "";
2103                 }
2104
2105                 if (($declaration_purpose eq "") && $verbose) {
2106                         print STDERR "Warning(${file}:$.): missing initial short description on line:\n";
2107                         print STDERR $_;
2108                         ++$warnings;
2109                 }
2110
2111                 if ($identifier =~ m/^struct/) {
2112                     $decl_type = 'struct';
2113                 } elsif ($identifier =~ m/^union/) {
2114                     $decl_type = 'union';
2115                 } elsif ($identifier =~ m/^enum/) {
2116                     $decl_type = 'enum';
2117                 } elsif ($identifier =~ m/^typedef/) {
2118                     $decl_type = 'typedef';
2119                 } else {
2120                     $decl_type = 'function';
2121                 }
2122
2123                 if ($verbose) {
2124                     print STDERR "Info(${file}:$.): Scanning doc for $identifier\n";
2125                 }
2126             } else {
2127                 print STDERR "Warning(${file}:$.): Cannot understand $_ on line $.",
2128                 " - I thought it was a doc line\n";
2129                 ++$warnings;
2130                 $state = 0;
2131             }
2132         } elsif ($state == 2) { # look for head: lines, and include content
2133             if (/$doc_sect/o) {
2134                 $newsection = $1;
2135                 $newcontents = $2;
2136
2137                 if (($contents ne "") && ($contents ne "\n")) {
2138                     if (!$in_doc_sect && $verbose) {
2139                         print STDERR "Warning(${file}:$.): contents before sections\n";
2140                         ++$warnings;
2141                     }
2142                     dump_section($file, $section, xml_escape($contents));
2143                     $section = $section_default;
2144                 }
2145
2146                 $in_doc_sect = 1;
2147                 $in_purpose = 0;
2148                 $contents = $newcontents;
2149                 if ($contents ne "") {
2150                     while ((substr($contents, 0, 1) eq " ") ||
2151                         substr($contents, 0, 1) eq "\t") {
2152                             $contents = substr($contents, 1);
2153                     }
2154                     $contents .= "\n";
2155                 }
2156                 $section = $newsection;
2157             } elsif (/$doc_end/) {
2158
2159                 if (($contents ne "") && ($contents ne "\n")) {
2160                     dump_section($file, $section, xml_escape($contents));
2161                     $section = $section_default;
2162                     $contents = "";
2163                 }
2164                 # look for doc_com + <text> + doc_end:
2165                 if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2166                     print STDERR "Warning(${file}:$.): suspicious ending line: $_";
2167                     ++$warnings;
2168                 }
2169
2170                 $prototype = "";
2171                 $state = 3;
2172                 $brcount = 0;
2173 #               print STDERR "end of doc comment, looking for prototype\n";
2174             } elsif (/$doc_content/) {
2175                 # miguel-style comment kludge, look for blank lines after
2176                 # @parameter line to signify start of description
2177                 if ($1 eq "") {
2178                     if ($section =~ m/^@/ || $section eq $section_context) {
2179                         dump_section($file, $section, xml_escape($contents));
2180                         $section = $section_default;
2181                         $contents = "";
2182                     } else {
2183                         $contents .= "\n";
2184                     }
2185                     $in_purpose = 0;
2186                 } elsif ($in_purpose == 1) {
2187                     # Continued declaration purpose
2188                     chomp($declaration_purpose);
2189                     $declaration_purpose .= " " . xml_escape($1);
2190                 } else {
2191                     $contents .= $1 . "\n";
2192                 }
2193             } else {
2194                 # i dont know - bad line?  ignore.
2195                 print STDERR "Warning(${file}:$.): bad line: $_";
2196                 ++$warnings;
2197             }
2198         } elsif ($state == 3) { # scanning for function '{' (end of prototype)
2199             if ($decl_type eq 'function') {
2200                 process_state3_function($_, $file);
2201             } else {
2202                 process_state3_type($_, $file);
2203             }
2204         } elsif ($state == 4) {
2205                 # Documentation block
2206                 if (/$doc_block/) {
2207                         dump_doc_section($file, $section, xml_escape($contents));
2208                         $contents = "";
2209                         $function = "";
2210                         %constants = ();
2211                         %parameterdescs = ();
2212                         %parametertypes = ();
2213                         @parameterlist = ();
2214                         %sections = ();
2215                         @sectionlist = ();
2216                         $prototype = "";
2217                         if ( $1 eq "" ) {
2218                                 $section = $section_intro;
2219                         } else {
2220                                 $section = $1;
2221                         }
2222                 }
2223                 elsif (/$doc_end/)
2224                 {
2225                         dump_doc_section($file, $section, xml_escape($contents));
2226                         $contents = "";
2227                         $function = "";
2228                         %constants = ();
2229                         %parameterdescs = ();
2230                         %parametertypes = ();
2231                         @parameterlist = ();
2232                         %sections = ();
2233                         @sectionlist = ();
2234                         $prototype = "";
2235                         $state = 0;
2236                 }
2237                 elsif (/$doc_content/)
2238                 {
2239                         if ( $1 eq "" )
2240                         {
2241                                 $contents .= $blankline;
2242                         }
2243                         else
2244                         {
2245                                 $contents .= $1 . "\n";
2246                         }
2247                 }
2248         }
2249     }
2250     if ($initial_section_counter == $section_counter) {
2251         print STDERR "Warning(${file}): no structured comments found\n";
2252         if ($output_mode eq "xml") {
2253             # The template wants at least one RefEntry here; make one.
2254             print "<refentry>\n";
2255             print " <refnamediv>\n";
2256             print "  <refname>\n";
2257             print "   ${file}\n";
2258             print "  </refname>\n";
2259             print "  <refpurpose>\n";
2260             print "   Document generation inconsistency\n";
2261             print "  </refpurpose>\n";
2262             print " </refnamediv>\n";
2263             print " <refsect1>\n";
2264             print "  <title>\n";
2265             print "   Oops\n";
2266             print "  </title>\n";
2267             print "  <warning>\n";
2268             print "   <para>\n";
2269             print "    The template for this document tried to insert\n";
2270             print "    the structured comment from the file\n";
2271             print "    <filename>${file}</filename> at this point,\n";
2272             print "    but none was found.\n";
2273             print "    This dummy section is inserted to allow\n";
2274             print "    generation to continue.\n";
2275             print "   </para>\n";
2276             print "  </warning>\n";
2277             print " </refsect1>\n";
2278             print "</refentry>\n";
2279         }
2280     }
2281 }