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) 2005-2008  Randy Dunlap                         ##
   9 ##                                                               ##
  10 ## #define enhancements by Armin Kuster <akuster@mvista.com>     ##
  11 ## Copyright (c) 2000 MontaVista Software, Inc.                  ##
  12 ##                                                               ##
  13 ## This software falls under the GNU General Public License.     ##
  14 ## Please read the COPYING file for more information             ##
  15
  16 # w.o. 03-11-2000: added the '-filelist' option.
  17
  18 # 18/01/2001 -  Cleanups
  19 #               Functions prototyped as foo(void) same as foo()
  20 #               Stop eval'ing where we don't need to.
  21 # -- huggie@earth.li
  22
  23 # 27/06/2001 -  Allowed whitespace after initial "/**" and
  24 #               allowed comments before function declarations.
  25 # -- Christian Kreibich <ck@whoop.org>
  26
  27 # Still to do:
  28 #       - add perldoc documentation
  29 #       - Look more closely at some of the scarier bits :)
  30
  31 # 26/05/2001 -  Support for separate source and object trees.
  32 #               Return error code.
  33 #               Keith Owens <kaos@ocs.com.au>
  34
  35 # 23/09/2001 - Added support for typedefs, structs, enums and unions
  36 #              Support for Context section; can be terminated using empty line
  37 #              Small fixes (like spaces vs. \s in regex)
  38 # -- Tim Jansen <tim@tjansen.de>
  39
  40
  41 #
  42 # This will read a 'c' file and scan for embedded comments in the
  43 # style of gnome comments (+minor extensions - see below).
  44 #
  45
  46 # Note: This only supports 'c'.
  47
  48 # usage:
  49 # kernel-doc [ -docbook | -html | -text | -man ] [ -no-doc-sections ]
  50 #           [ -function funcname [ -function funcname ...] ] c file(s)s > outputfile
  51 # or
  52 #           [ -nofunction funcname [ -function funcname ...] ] c file(s)s > outputfile
  53 #
  54 #  Set output format using one of -docbook -html -text or -man.  Default is man.
  55 #
  56 #  -no-doc-sections
  57 #       Do not output DOC: sections
  58 #
  59 #  -function funcname
  60 #       If set, then only generate documentation for the given function(s) or
  61 #       DOC: section titles.  All other functions and DOC: sections are ignored.
  62 #
  63 #  -nofunction funcname
  64 #       If set, then only generate documentation for the other function(s)/DOC:
  65 #       sections. Cannot be used together with -function (yes, that's a bug --
  66 #       perl hackers can fix it 8))
  67 #
  68 #  c files - list of 'c' files to process
  69 #
  70 #  All output goes to stdout, with errors to stderr.
  71
  72 #
  73 # format of comments.
  74 # In the following table, (...)? signifies optional structure.
  75 #                         (...)* signifies 0 or more structure elements
  76 # /**
  77 #  * function_name(:)? (- short description)?
  78 # (* @parameterx: (description of parameter x)?)*
  79 # (* a blank line)?
  80 #  * (Description:)? (Description of function)?
  81 #  * (section header: (section description)? )*
  82 #  (*)?*/
  83 #
  84 # So .. the trivial example would be:
  85 #
  86 # /**
  87 #  * my_function
  88 #  **/
  89 #
  90 # If the Description: header tag is omitted, then there must be a blank line
  91 # after the last parameter specification.
  92 # e.g.
  93 # /**
  94 #  * my_function - does my stuff
  95 #  * @my_arg: its mine damnit
  96 #  *
  97 #  * Does my stuff explained.
  98 #  */
  99 #
 100 #  or, could also use:
 101 # /**
 102 #  * my_function - does my stuff
 103 #  * @my_arg: its mine damnit
 104 #  * Description: Does my stuff explained.
 105 #  */
 106 # etc.
 107 #
 108 # Beside functions you can also write documentation for structs, unions,
 109 # enums and typedefs. Instead of the function name you must write the name
 110 # of the declaration;  the struct/union/enum/typedef must always precede
 111 # the name. Nesting of declarations is not supported.
 112 # Use the argument mechanism to document members or constants.
 113 # e.g.
 114 # /**
 115 #  * struct my_struct - short description
 116 #  * @a: first member
 117 #  * @b: second member
 118 #  *
 119 #  * Longer description
 120 #  */
 121 # struct my_struct {
 122 #     int a;
 123 #     int b;
 124 # /* private: */
 125 #     int c;
 126 # };
 127 #
 128 # All descriptions can be multiline, except the short function description.
 129 #
 130 # You can also add additional sections. When documenting kernel functions you
 131 # should document the "Context:" of the function, e.g. whether the functions
 132 # can be called form interrupts. Unlike other sections you can end it with an
 133 # empty line.
 134 # Example-sections should contain the string EXAMPLE so that they are marked
 135 # appropriately in DocBook.
 136 #
 137 # Example:
 138 # /**
 139 #  * user_function - function that can only be called in user context
 140 #  * @a: some argument
 141 #  * Context: !in_interrupt()
 142 #  *
 143 #  * Some description
 144 #  * Example:
 145 #  *    user_function(22);
 146 #  */
 147 # ...
 148 #
 149 #
 150 # All descriptive text is further processed, scanning for the following special
 151 # patterns, which are highlighted appropriately.
 152 #
 153 # 'funcname()' - function
 154 # '$ENVVAR' - environmental variable
 155 # '&struct_name' - name of a structure (up to two words including 'struct')
 156 # '@parameter' - name of a parameter
 157 # '%CONST' - name of a constant.
 158
 159 my $errors = 0;
 160 my $warnings = 0;
 161 my $anon_struct_union = 0;
 162
 163 # match expressions used to find embedded type information
 164 my $type_constant = '\%([-_\w]+)';
 165 my $type_func = '(\w+)\(\)';
 166 my $type_param = '\@(\w+)';
 167 my $type_struct = '\&((struct\s*)*[_\w]+)';
 168 my $type_struct_xml = '\\&amp;((struct\s*)*[_\w]+)';
 169 my $type_env = '(\$\w+)';
 170
 171 # Output conversion substitutions.
 172 #  One for each output format
 173
 174 # these work fairly well
 175 my %highlights_html = ( $type_constant, "<i>\$1</i>",
 176                         $type_func, "<b>\$1</b>",
 177                         $type_struct_xml, "<i>\$1</i>",
 178                         $type_env, "<b><i>\$1</i></b>",
 179                         $type_param, "<tt><b>\$1</b></tt>" );
 180 my $local_lt = "\\\\\\\\lt:";
 181 my $local_gt = "\\\\\\\\gt:";
 182 my $blankline_html = $local_lt . "p" . $local_gt;       # was "<p>"
 183
 184 # XML, docbook format
 185 my %highlights_xml = ( "([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>",
 186                         $type_constant, "<constant>\$1</constant>",
 187                         $type_func, "<function>\$1</function>",
 188                         $type_struct_xml, "<structname>\$1</structname>",
 189                         $type_env, "<envar>\$1</envar>",
 190                         $type_param, "<parameter>\$1</parameter>" );
 191 my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n";
 192
 193 # gnome, docbook format
 194 my %highlights_gnome = ( $type_constant, "<replaceable class=\"option\">\$1</replaceable>",
 195                          $type_func, "<function>\$1</function>",
 196                          $type_struct, "<structname>\$1</structname>",
 197                          $type_env, "<envar>\$1</envar>",
 198                          $type_param, "<parameter>\$1</parameter>" );
 199 my $blankline_gnome = "</para><para>\n";
 200
 201 # these are pretty rough
 202 my %highlights_man = ( $type_constant, "\$1",
 203                        $type_func, "\\\\fB\$1\\\\fP",
 204                        $type_struct, "\\\\fI\$1\\\\fP",
 205                        $type_param, "\\\\fI\$1\\\\fP" );
 206 my $blankline_man = "";
 207
 208 # text-mode
 209 my %highlights_text = ( $type_constant, "\$1",
 210                         $type_func, "\$1",
 211                         $type_struct, "\$1",
 212                         $type_param, "\$1" );
 213 my $blankline_text = "";
 214
 215
 216 sub usage {
 217     print "Usage: $0 [ -v ] [ -docbook | -html | -text | -man ] [ -no-doc-sections ]\n";
 218     print "         [ -function funcname [ -function funcname ...] ]\n";
 219     print "         [ -nofunction funcname [ -nofunction funcname ...] ]\n";
 220     print "         c source file(s) > outputfile\n";
 221     print "         -v : verbose output, more warnings & other info listed\n";
 222     exit 1;
 223 }
 224
 225 # read arguments
 226 if ($#ARGV==-1) {
 227     usage();
 228 }
 229
 230 my $verbose = 0;
 231 my $output_mode = "man";
 232 my $no_doc_sections = 0;
 233 my %highlights = %highlights_man;
 234 my $blankline = $blankline_man;
 235 my $modulename = "Kernel API";
 236 my $function_only = 0;
 237 my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
 238                 'July', 'August', 'September', 'October',
 239                 'November', 'December')[(localtime)[4]] .
 240   " " . ((localtime)[5]+1900);
 241
 242 # Essentially these are globals
 243 # They probably want to be tidied up made more localised or summat.
 244 # CAVEAT EMPTOR!  Some of the others I localised may not want to be which
 245 # could cause "use of undefined value" or other bugs.
 246 my ($function, %function_table,%parametertypes,$declaration_purpose);
 247 my ($type,$declaration_name,$return_type);
 248 my ($newsection,$newcontents,$prototype,$filelist, $brcount, %source_map);
 249
 250 if (defined($ENV{'KBUILD_VERBOSE'})) {
 251         $verbose = "$ENV{'KBUILD_VERBOSE'}";
 252 }
 253
 254 # Generated docbook code is inserted in a template at a point where
 255 # docbook v3.1 requires a non-zero sequence of RefEntry's; see:
 256 # http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
 257 # We keep track of number of generated entries and generate a dummy
 258 # if needs be to ensure the expanded template can be postprocessed
 259 # into html.
 260 my $section_counter = 0;
 261
 262 my $lineprefix="";
 263
 264 # states
 265 # 0 - normal code
 266 # 1 - looking for function name
 267 # 2 - scanning field start.
 268 # 3 - scanning prototype.
 269 # 4 - documentation block
 270 my $state;
 271 my $in_doc_sect;
 272
 273 #declaration types: can be
 274 # 'function', 'struct', 'union', 'enum', 'typedef'
 275 my $decl_type;
 276
 277 my $doc_special = "\@\%\$\&";
 278
 279 my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
 280 my $doc_end = '\*/';
 281 my $doc_com = '\s*\*\s*';
 282 my $doc_decl = $doc_com.'(\w+)';
 283 my $doc_sect = $doc_com.'(['.$doc_special.']?[\w\s]+):(.*)';
 284 my $doc_content = $doc_com.'(.*)';
 285 my $doc_block = $doc_com.'DOC:\s*(.*)?';
 286
 287 my %constants;
 288 my %parameterdescs;
 289 my @parameterlist;
 290 my %sections;
 291 my @sectionlist;
 292
 293 my $contents = "";
 294 my $section_default = "Description";    # default section
 295 my $section_intro = "Introduction";
 296 my $section = $section_default;
 297 my $section_context = "Context";
 298
 299 my $undescribed = "-- undescribed --";
 300
 301 reset_state();
 302
 303 while ($ARGV[0] =~ m/^-(.*)/) {
 304     my $cmd = shift @ARGV;
 305     if ($cmd eq "-html") {
 306         $output_mode = "html";
 307         %highlights = %highlights_html;
 308         $blankline = $blankline_html;
 309     } elsif ($cmd eq "-man") {
 310         $output_mode = "man";
 311         %highlights = %highlights_man;
 312         $blankline = $blankline_man;
 313     } elsif ($cmd eq "-text") {
 314         $output_mode = "text";
 315         %highlights = %highlights_text;
 316         $blankline = $blankline_text;
 317     } elsif ($cmd eq "-docbook") {
 318         $output_mode = "xml";
 319         %highlights = %highlights_xml;
 320         $blankline = $blankline_xml;
 321     } elsif ($cmd eq "-gnome") {
 322         $output_mode = "gnome";
 323         %highlights = %highlights_gnome;
 324         $blankline = $blankline_gnome;
 325     } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
 326         $modulename = shift @ARGV;
 327     } elsif ($cmd eq "-function") { # to only output specific functions
 328         $function_only = 1;
 329         $function = shift @ARGV;
 330         $function_table{$function} = 1;
 331     } elsif ($cmd eq "-nofunction") { # to only output specific functions
 332         $function_only = 2;
 333         $function = shift @ARGV;
 334         $function_table{$function} = 1;
 335     } elsif ($cmd eq "-v") {
 336         $verbose = 1;
 337     } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
 338         usage();
 339     } elsif ($cmd eq '-filelist') {
 340             $filelist = shift @ARGV;
 341     } elsif ($cmd eq '-no-doc-sections') {
 342             $no_doc_sections = 1;
 343     }
 344 }
 345
 346 # get kernel version from env
 347 sub get_kernel_version() {
 348     my $version = 'unknown kernel version';
 349
 350     if (defined($ENV{'KERNELVERSION'})) {
 351         $version = $ENV{'KERNELVERSION'};
 352     }
 353     return $version;
 354 }
 355 my $kernelversion = get_kernel_version();
 356
 357 # generate a sequence of code that will splice in highlighting information
 358 # using the s// operator.
 359 my $dohighlight = "";
 360 foreach my $pattern (keys %highlights) {
 361 #   print STDERR "scanning pattern:$pattern, highlight:($highlights{$pattern})\n";
 362     $dohighlight .=  "\$contents =~ s:$pattern:$highlights{$pattern}:gs;\n";
 363 }
 364
 365 ##
 366 # dumps section contents to arrays/hashes intended for that purpose.
 367 #
 368 sub dump_section {
 369     my $file = shift;
 370     my $name = shift;
 371     my $contents = join "\n", @_;
 372
 373     if ($name =~ m/$type_constant/) {
 374         $name = $1;
 375 #       print STDERR "constant section '$1' = '$contents'\n";
 376         $constants{$name} = $contents;
 377     } elsif ($name =~ m/$type_param/) {
 378 #       print STDERR "parameter def '$1' = '$contents'\n";
 379         $name = $1;
 380         $parameterdescs{$name} = $contents;
 381     } else {
 382 #       print STDERR "other section '$name' = '$contents'\n";
 383         if (defined($sections{$name}) && ($sections{$name} ne "")) {
 384                 print STDERR "Error(${file}:$.): duplicate section name '$name'\n";
 385                 ++$errors;
 386         }
 387         $sections{$name} = $contents;
 388         push @sectionlist, $name;
 389     }
 390 }
 391
 392 ##
 393 # dump DOC: section after checking that it should go out
 394 #
 395 sub dump_doc_section {
 396     my $file = shift;
 397     my $name = shift;
 398     my $contents = join "\n", @_;
 399
 400     if ($no_doc_sections) {
 401         return;
 402     }
 403
 404     if (($function_only == 0) ||
 405         ( $function_only == 1 && defined($function_table{$name})) ||
 406         ( $function_only == 2 && !defined($function_table{$name})))
 407     {
 408         dump_section($file, $name, $contents);
 409         output_blockhead({'sectionlist' => \@sectionlist,
 410                           'sections' => \%sections,
 411                           'module' => $modulename,
 412                           'content-only' => ($function_only != 0), });
 413     }
 414 }
 415
 416 ##
 417 # output function
 418 #
 419 # parameterdescs, a hash.
 420 #  function => "function name"
 421 #  parameterlist => @list of parameters
 422 #  parameterdescs => %parameter descriptions
 423 #  sectionlist => @list of sections
 424 #  sections => %section descriptions
 425 #
 426
 427 sub output_highlight {
 428     my $contents = join "\n",@_;
 429     my $line;
 430
 431 #   DEBUG
 432 #   if (!defined $contents) {
 433 #       use Carp;
 434 #       confess "output_highlight got called with no args?\n";
 435 #   }
 436
 437     if ($output_mode eq "html" || $output_mode eq "xml") {
 438         $contents = local_unescape($contents);
 439         # convert data read & converted thru xml_escape() into &xyz; format:
 440         $contents =~ s/\\\\\\/&/g;
 441     }
 442 #   print STDERR "contents b4:$contents\n";
 443     eval $dohighlight;
 444     die $@ if $@;
 445 #   print STDERR "contents af:$contents\n";
 446
 447     foreach $line (split "\n", $contents) {
 448         if ($line eq ""){
 449             print $lineprefix, local_unescape($blankline);
 450         } else {
 451             $line =~ s/\\\\\\/\&/g;
 452             if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
 453                 print "\\&$line";
 454             } else {
 455                 print $lineprefix, $line;
 456             }
 457         }
 458         print "\n";
 459     }
 460 }
 461
 462 #output sections in html
 463 sub output_section_html(%) {
 464     my %args = %{$_[0]};
 465     my $section;
 466
 467     foreach $section (@{$args{'sectionlist'}}) {
 468         print "<h3>$section</h3>\n";
 469         print "<blockquote>\n";
 470         output_highlight($args{'sections'}{$section});
 471         print "</blockquote>\n";
 472     }
 473 }
 474
 475 # output enum in html
 476 sub output_enum_html(%) {
 477     my %args = %{$_[0]};
 478     my ($parameter);
 479     my $count;
 480     print "<h2>enum ".$args{'enum'}."</h2>\n";
 481
 482     print "<b>enum ".$args{'enum'}."</b> {<br>\n";
 483     $count = 0;
 484     foreach $parameter (@{$args{'parameterlist'}}) {
 485         print " <b>".$parameter."</b>";
 486         if ($count != $#{$args{'parameterlist'}}) {
 487             $count++;
 488             print ",\n";
 489         }
 490         print "<br>";
 491     }
 492     print "};<br>\n";
 493
 494     print "<h3>Constants</h3>\n";
 495     print "<dl>\n";
 496     foreach $parameter (@{$args{'parameterlist'}}) {
 497         print "<dt><b>".$parameter."</b>\n";
 498         print "<dd>";
 499         output_highlight($args{'parameterdescs'}{$parameter});
 500     }
 501     print "</dl>\n";
 502     output_section_html(@_);
 503     print "<hr>\n";
 504 }
 505
 506 # output typedef in html
 507 sub output_typedef_html(%) {
 508     my %args = %{$_[0]};
 509     my ($parameter);
 510     my $count;
 511     print "<h2>typedef ".$args{'typedef'}."</h2>\n";
 512
 513     print "<b>typedef ".$args{'typedef'}."</b>\n";
 514     output_section_html(@_);
 515     print "<hr>\n";
 516 }
 517
 518 # output struct in html
 519 sub output_struct_html(%) {
 520     my %args = %{$_[0]};
 521     my ($parameter);
 522
 523     print "<h2>".$args{'type'}." ".$args{'struct'}. " - " .$args{'purpose'}."</h2>\n";
 524     print "<b>".$args{'type'}." ".$args{'struct'}."</b> {<br>\n";
 525     foreach $parameter (@{$args{'parameterlist'}}) {
 526         if ($parameter =~ /^#/) {
 527                 print "$parameter<br>\n";
 528                 next;
 529         }
 530         my $parameter_name = $parameter;
 531         $parameter_name =~ s/\[.*//;
 532
 533         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 534         $type = $args{'parametertypes'}{$parameter};
 535         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 536             # pointer-to-function
 537             print "&nbsp; &nbsp; <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
 538         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
 539             # bitfield
 540             print "&nbsp; &nbsp; <i>$1</i> <b>$parameter</b>$2;<br>\n";
 541         } else {
 542             print "&nbsp; &nbsp; <i>$type</i> <b>$parameter</b>;<br>\n";
 543         }
 544     }
 545     print "};<br>\n";
 546
 547     print "<h3>Members</h3>\n";
 548     print "<dl>\n";
 549     foreach $parameter (@{$args{'parameterlist'}}) {
 550         ($parameter =~ /^#/) && next;
 551
 552         my $parameter_name = $parameter;
 553         $parameter_name =~ s/\[.*//;
 554
 555         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 556         print "<dt><b>".$parameter."</b>\n";
 557         print "<dd>";
 558         output_highlight($args{'parameterdescs'}{$parameter_name});
 559     }
 560     print "</dl>\n";
 561     output_section_html(@_);
 562     print "<hr>\n";
 563 }
 564
 565 # output function in html
 566 sub output_function_html(%) {
 567     my %args = %{$_[0]};
 568     my ($parameter, $section);
 569     my $count;
 570
 571     print "<h2>" .$args{'function'}." - ".$args{'purpose'}."</h2>\n";
 572     print "<i>".$args{'functiontype'}."</i>\n";
 573     print "<b>".$args{'function'}."</b>\n";
 574     print "(";
 575     $count = 0;
 576     foreach $parameter (@{$args{'parameterlist'}}) {
 577         $type = $args{'parametertypes'}{$parameter};
 578         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 579             # pointer-to-function
 580             print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
 581         } else {
 582             print "<i>".$type."</i> <b>".$parameter."</b>";
 583         }
 584         if ($count != $#{$args{'parameterlist'}}) {
 585             $count++;
 586             print ",\n";
 587         }
 588     }
 589     print ")\n";
 590
 591     print "<h3>Arguments</h3>\n";
 592     print "<dl>\n";
 593     foreach $parameter (@{$args{'parameterlist'}}) {
 594         my $parameter_name = $parameter;
 595         $parameter_name =~ s/\[.*//;
 596
 597         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 598         print "<dt><b>".$parameter."</b>\n";
 599         print "<dd>";
 600         output_highlight($args{'parameterdescs'}{$parameter_name});
 601     }
 602     print "</dl>\n";
 603     output_section_html(@_);
 604     print "<hr>\n";
 605 }
 606
 607 # output DOC: block header in html
 608 sub output_blockhead_html(%) {
 609     my %args = %{$_[0]};
 610     my ($parameter, $section);
 611     my $count;
 612
 613     foreach $section (@{$args{'sectionlist'}}) {
 614         print "<h3>$section</h3>\n";
 615         print "<ul>\n";
 616         output_highlight($args{'sections'}{$section});
 617         print "</ul>\n";
 618     }
 619     print "<hr>\n";
 620 }
 621
 622 sub output_section_xml(%) {
 623     my %args = %{$_[0]};
 624     my $section;
 625     # print out each section
 626     $lineprefix="   ";
 627     foreach $section (@{$args{'sectionlist'}}) {
 628         print "<refsect1>\n";
 629         print "<title>$section</title>\n";
 630         if ($section =~ m/EXAMPLE/i) {
 631             print "<informalexample><programlisting>\n";
 632         } else {
 633             print "<para>\n";
 634         }
 635         output_highlight($args{'sections'}{$section});
 636         if ($section =~ m/EXAMPLE/i) {
 637             print "</programlisting></informalexample>\n";
 638         } else {
 639             print "</para>\n";
 640         }
 641         print "</refsect1>\n";
 642     }
 643 }
 644
 645 # output function in XML DocBook
 646 sub output_function_xml(%) {
 647     my %args = %{$_[0]};
 648     my ($parameter, $section);
 649     my $count;
 650     my $id;
 651
 652     $id = "API-".$args{'function'};
 653     $id =~ s/[^A-Za-z0-9]/-/g;
 654
 655     print "<refentry id=\"$id\">\n";
 656     print "<refentryinfo>\n";
 657     print " <title>LINUX</title>\n";
 658     print " <productname>Kernel Hackers Manual</productname>\n";
 659     print " <date>$man_date</date>\n";
 660     print "</refentryinfo>\n";
 661     print "<refmeta>\n";
 662     print " <refentrytitle><phrase>".$args{'function'}."</phrase></refentrytitle>\n";
 663     print " <manvolnum>9</manvolnum>\n";
 664     print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 665     print "</refmeta>\n";
 666     print "<refnamediv>\n";
 667     print " <refname>".$args{'function'}."</refname>\n";
 668     print " <refpurpose>\n";
 669     print "  ";
 670     output_highlight ($args{'purpose'});
 671     print " </refpurpose>\n";
 672     print "</refnamediv>\n";
 673
 674     print "<refsynopsisdiv>\n";
 675     print " <title>Synopsis</title>\n";
 676     print "  <funcsynopsis><funcprototype>\n";
 677     print "   <funcdef>".$args{'functiontype'}." ";
 678     print "<function>".$args{'function'}." </function></funcdef>\n";
 679
 680     $count = 0;
 681     if ($#{$args{'parameterlist'}} >= 0) {
 682         foreach $parameter (@{$args{'parameterlist'}}) {
 683             $type = $args{'parametertypes'}{$parameter};
 684             if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 685                 # pointer-to-function
 686                 print "   <paramdef>$1<parameter>$parameter</parameter>)\n";
 687                 print "     <funcparams>$2</funcparams></paramdef>\n";
 688             } else {
 689                 print "   <paramdef>".$type;
 690                 print " <parameter>$parameter</parameter></paramdef>\n";
 691             }
 692         }
 693     } else {
 694         print "  <void/>\n";
 695     }
 696     print "  </funcprototype></funcsynopsis>\n";
 697     print "</refsynopsisdiv>\n";
 698
 699     # print parameters
 700     print "<refsect1>\n <title>Arguments</title>\n";
 701     if ($#{$args{'parameterlist'}} >= 0) {
 702         print " <variablelist>\n";
 703         foreach $parameter (@{$args{'parameterlist'}}) {
 704             my $parameter_name = $parameter;
 705             $parameter_name =~ s/\[.*//;
 706
 707             print "  <varlistentry>\n   <term><parameter>$parameter</parameter></term>\n";
 708             print "   <listitem>\n    <para>\n";
 709             $lineprefix="     ";
 710             output_highlight($args{'parameterdescs'}{$parameter_name});
 711             print "    </para>\n   </listitem>\n  </varlistentry>\n";
 712         }
 713         print " </variablelist>\n";
 714     } else {
 715         print " <para>\n  None\n </para>\n";
 716     }
 717     print "</refsect1>\n";
 718
 719     output_section_xml(@_);
 720     print "</refentry>\n\n";
 721 }
 722
 723 # output struct in XML DocBook
 724 sub output_struct_xml(%) {
 725     my %args = %{$_[0]};
 726     my ($parameter, $section);
 727     my $id;
 728
 729     $id = "API-struct-".$args{'struct'};
 730     $id =~ s/[^A-Za-z0-9]/-/g;
 731
 732     print "<refentry id=\"$id\">\n";
 733     print "<refentryinfo>\n";
 734     print " <title>LINUX</title>\n";
 735     print " <productname>Kernel Hackers Manual</productname>\n";
 736     print " <date>$man_date</date>\n";
 737     print "</refentryinfo>\n";
 738     print "<refmeta>\n";
 739     print " <refentrytitle><phrase>".$args{'type'}." ".$args{'struct'}."</phrase></refentrytitle>\n";
 740     print " <manvolnum>9</manvolnum>\n";
 741     print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 742     print "</refmeta>\n";
 743     print "<refnamediv>\n";
 744     print " <refname>".$args{'type'}." ".$args{'struct'}."</refname>\n";
 745     print " <refpurpose>\n";
 746     print "  ";
 747     output_highlight ($args{'purpose'});
 748     print " </refpurpose>\n";
 749     print "</refnamediv>\n";
 750
 751     print "<refsynopsisdiv>\n";
 752     print " <title>Synopsis</title>\n";
 753     print "  <programlisting>\n";
 754     print $args{'type'}." ".$args{'struct'}." {\n";
 755     foreach $parameter (@{$args{'parameterlist'}}) {
 756         if ($parameter =~ /^#/) {
 757             print "$parameter\n";
 758             next;
 759         }
 760
 761         my $parameter_name = $parameter;
 762         $parameter_name =~ s/\[.*//;
 763
 764         defined($args{'parameterdescs'}{$parameter_name}) || next;
 765         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 766         $type = $args{'parametertypes'}{$parameter};
 767         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 768             # pointer-to-function
 769             print "  $1 $parameter) ($2);\n";
 770         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
 771             # bitfield
 772             print "  $1 $parameter$2;\n";
 773         } else {
 774             print "  ".$type." ".$parameter.";\n";
 775         }
 776     }
 777     print "};";
 778     print "  </programlisting>\n";
 779     print "</refsynopsisdiv>\n";
 780
 781     print " <refsect1>\n";
 782     print "  <title>Members</title>\n";
 783
 784     if ($#{$args{'parameterlist'}} >= 0) {
 785     print "  <variablelist>\n";
 786     foreach $parameter (@{$args{'parameterlist'}}) {
 787       ($parameter =~ /^#/) && next;
 788
 789       my $parameter_name = $parameter;
 790       $parameter_name =~ s/\[.*//;
 791
 792       defined($args{'parameterdescs'}{$parameter_name}) || next;
 793       ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
 794       print "    <varlistentry>";
 795       print "      <term>$parameter</term>\n";
 796       print "      <listitem><para>\n";
 797       output_highlight($args{'parameterdescs'}{$parameter_name});
 798       print "      </para></listitem>\n";
 799       print "    </varlistentry>\n";
 800     }
 801     print "  </variablelist>\n";
 802     } else {
 803         print " <para>\n  None\n </para>\n";
 804     }
 805     print " </refsect1>\n";
 806
 807     output_section_xml(@_);
 808
 809     print "</refentry>\n\n";
 810 }
 811
 812 # output enum in XML DocBook
 813 sub output_enum_xml(%) {
 814     my %args = %{$_[0]};
 815     my ($parameter, $section);
 816     my $count;
 817     my $id;
 818
 819     $id = "API-enum-".$args{'enum'};
 820     $id =~ s/[^A-Za-z0-9]/-/g;
 821
 822     print "<refentry id=\"$id\">\n";
 823     print "<refentryinfo>\n";
 824     print " <title>LINUX</title>\n";
 825     print " <productname>Kernel Hackers Manual</productname>\n";
 826     print " <date>$man_date</date>\n";
 827     print "</refentryinfo>\n";
 828     print "<refmeta>\n";
 829     print " <refentrytitle><phrase>enum ".$args{'enum'}."</phrase></refentrytitle>\n";
 830     print " <manvolnum>9</manvolnum>\n";
 831     print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
 832     print "</refmeta>\n";
 833     print "<refnamediv>\n";
 834     print " <refname>enum ".$args{'enum'}."</refname>\n";
 835     print " <refpurpose>\n";
 836     print "  ";
 837     output_highlight ($args{'purpose'});
 838     print " </refpurpose>\n";
 839     print "</refnamediv>\n";
 840
 841     print "<refsynopsisdiv>\n";
 842     print " <title>Synopsis</title>\n";
 843     print "  <programlisting>\n";
 844     print "enum ".$args{'enum'}." {\n";
 845     $count = 0;
 846     foreach $parameter (@{$args{'parameterlist'}}) {
 847         print "  $parameter";
 848         if ($count != $#{$args{'parameterlist'}}) {
 849             $count++;
 850             print ",";
 851         }
 852         print "\n";
 853     }
 854     print "};";
 855     print "  </programlisting>\n";
 856     print "</refsynopsisdiv>\n";
 857
 858     print "<refsect1>\n";
 859     print " <title>Constants</title>\n";
 860     print "  <variablelist>\n";
 861     foreach $parameter (@{$args{'parameterlist'}}) {
 862       my $parameter_name = $parameter;
 863       $parameter_name =~ s/\[.*//;
 864
 865       print "    <varlistentry>";
 866       print "      <term>$parameter</term>\n";
 867       print "      <listitem><para>\n";
 868       output_highlight($args{'parameterdescs'}{$parameter_name});
 869       print "      </para></listitem>\n";
 870       print "    </varlistentry>\n";
 871     }
 872     print "  </variablelist>\n";
 873     print "</refsect1>\n";
 874
 875     output_section_xml(@_);
 876
 877     print "</refentry>\n\n";
 878 }
 879
 880 # output typedef in XML DocBook
 881 sub output_typedef_xml(%) {
 882     my %args = %{$_[0]};
 883     my ($parameter, $section);
 884     my $id;
 885
 886     $id = "API-typedef-".$args{'typedef'};
 887     $id =~ s/[^A-Za-z0-9]/-/g;
 888
 889     print "<refentry id=\"$id\">\n";
 890     print "<refentryinfo>\n";
 891     print " <title>LINUX</title>\n";
 892     print " <productname>Kernel Hackers Manual</productname>\n";
 893     print " <date>$man_date</date>\n";
 894     print "</refentryinfo>\n";
 895     print "<refmeta>\n";
 896     print " <refentrytitle><phrase>typedef ".$args{'typedef'}."</phrase></refentrytitle>\n";
 897     print " <manvolnum>9</manvolnum>\n";
 898     print "</refmeta>\n";
 899     print "<refnamediv>\n";
 900     print " <refname>typedef ".$args{'typedef'}."</refname>\n";
 901     print " <refpurpose>\n";
 902     print "  ";
 903     output_highlight ($args{'purpose'});
 904     print " </refpurpose>\n";
 905     print "</refnamediv>\n";
 906
 907     print "<refsynopsisdiv>\n";
 908     print " <title>Synopsis</title>\n";
 909     print "  <synopsis>typedef ".$args{'typedef'}.";</synopsis>\n";
 910     print "</refsynopsisdiv>\n";
 911
 912     output_section_xml(@_);
 913
 914     print "</refentry>\n\n";
 915 }
 916
 917 # output in XML DocBook
 918 sub output_blockhead_xml(%) {
 919     my %args = %{$_[0]};
 920     my ($parameter, $section);
 921     my $count;
 922
 923     my $id = $args{'module'};
 924     $id =~ s/[^A-Za-z0-9]/-/g;
 925
 926     # print out each section
 927     $lineprefix="   ";
 928     foreach $section (@{$args{'sectionlist'}}) {
 929         if (!$args{'content-only'}) {
 930                 print "<refsect1>\n <title>$section</title>\n";
 931         }
 932         if ($section =~ m/EXAMPLE/i) {
 933             print "<example><para>\n";
 934         } else {
 935             print "<para>\n";
 936         }
 937         output_highlight($args{'sections'}{$section});
 938         if ($section =~ m/EXAMPLE/i) {
 939             print "</para></example>\n";
 940         } else {
 941             print "</para>";
 942         }
 943         if (!$args{'content-only'}) {
 944                 print "\n</refsect1>\n";
 945         }
 946     }
 947
 948     print "\n\n";
 949 }
 950
 951 # output in XML DocBook
 952 sub output_function_gnome {
 953     my %args = %{$_[0]};
 954     my ($parameter, $section);
 955     my $count;
 956     my $id;
 957
 958     $id = $args{'module'}."-".$args{'function'};
 959     $id =~ s/[^A-Za-z0-9]/-/g;
 960
 961     print "<sect2>\n";
 962     print " <title id=\"$id\">".$args{'function'}."</title>\n";
 963
 964     print "  <funcsynopsis>\n";
 965     print "   <funcdef>".$args{'functiontype'}." ";
 966     print "<function>".$args{'function'}." ";
 967     print "</function></funcdef>\n";
 968
 969     $count = 0;
 970     if ($#{$args{'parameterlist'}} >= 0) {
 971         foreach $parameter (@{$args{'parameterlist'}}) {
 972             $type = $args{'parametertypes'}{$parameter};
 973             if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 974                 # pointer-to-function
 975                 print "   <paramdef>$1 <parameter>$parameter</parameter>)\n";
 976                 print "     <funcparams>$2</funcparams></paramdef>\n";
 977             } else {
 978                 print "   <paramdef>".$type;
 979                 print " <parameter>$parameter</parameter></paramdef>\n";
 980             }
 981         }
 982     } else {
 983         print "  <void>\n";
 984     }
 985     print "  </funcsynopsis>\n";
 986     if ($#{$args{'parameterlist'}} >= 0) {
 987         print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
 988         print "<tgroup cols=\"2\">\n";
 989         print "<colspec colwidth=\"2*\">\n";
 990         print "<colspec colwidth=\"8*\">\n";
 991         print "<tbody>\n";
 992         foreach $parameter (@{$args{'parameterlist'}}) {
 993             my $parameter_name = $parameter;
 994             $parameter_name =~ s/\[.*//;
 995
 996             print "  <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
 997             print "   <entry>\n";
 998             $lineprefix="     ";
 999             output_highlight($args{'parameterdescs'}{$parameter_name});
1000             print "    </entry></row>\n";
1001         }
1002         print " </tbody></tgroup></informaltable>\n";
1003     } else {
1004         print " <para>\n  None\n </para>\n";
1005     }
1006
1007     # print out each section
1008     $lineprefix="   ";
1009     foreach $section (@{$args{'sectionlist'}}) {
1010         print "<simplesect>\n <title>$section</title>\n";
1011         if ($section =~ m/EXAMPLE/i) {
1012             print "<example><programlisting>\n";
1013         } else {
1014         }
1015         print "<para>\n";
1016         output_highlight($args{'sections'}{$section});
1017         print "</para>\n";
1018         if ($section =~ m/EXAMPLE/i) {
1019             print "</programlisting></example>\n";
1020         } else {
1021         }
1022         print " </simplesect>\n";
1023     }
1024
1025     print "</sect2>\n\n";
1026 }
1027
1028 ##
1029 # output function in man
1030 sub output_function_man(%) {
1031     my %args = %{$_[0]};
1032     my ($parameter, $section);
1033     my $count;
1034
1035     print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
1036
1037     print ".SH NAME\n";
1038     print $args{'function'}." \\- ".$args{'purpose'}."\n";
1039
1040     print ".SH SYNOPSIS\n";
1041     if ($args{'functiontype'} ne "") {
1042         print ".B \"".$args{'functiontype'}."\" ".$args{'function'}."\n";
1043     } else {
1044         print ".B \"".$args{'function'}."\n";
1045     }
1046     $count = 0;
1047     my $parenth = "(";
1048     my $post = ",";
1049     foreach my $parameter (@{$args{'parameterlist'}}) {
1050         if ($count == $#{$args{'parameterlist'}}) {
1051             $post = ");";
1052         }
1053         $type = $args{'parametertypes'}{$parameter};
1054         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1055             # pointer-to-function
1056             print ".BI \"".$parenth.$1."\" ".$parameter." \") (".$2.")".$post."\"\n";
1057         } else {
1058             $type =~ s/([^\*])$/$1 /;
1059             print ".BI \"".$parenth.$type."\" ".$parameter." \"".$post."\"\n";
1060         }
1061         $count++;
1062         $parenth = "";
1063     }
1064
1065     print ".SH ARGUMENTS\n";
1066     foreach $parameter (@{$args{'parameterlist'}}) {
1067         my $parameter_name = $parameter;
1068         $parameter_name =~ s/\[.*//;
1069
1070         print ".IP \"".$parameter."\" 12\n";
1071         output_highlight($args{'parameterdescs'}{$parameter_name});
1072     }
1073     foreach $section (@{$args{'sectionlist'}}) {
1074         print ".SH \"", uc $section, "\"\n";
1075         output_highlight($args{'sections'}{$section});
1076     }
1077 }
1078
1079 ##
1080 # output enum in man
1081 sub output_enum_man(%) {
1082     my %args = %{$_[0]};
1083     my ($parameter, $section);
1084     my $count;
1085
1086     print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
1087
1088     print ".SH NAME\n";
1089     print "enum ".$args{'enum'}." \\- ".$args{'purpose'}."\n";
1090
1091     print ".SH SYNOPSIS\n";
1092     print "enum ".$args{'enum'}." {\n";
1093     $count = 0;
1094     foreach my $parameter (@{$args{'parameterlist'}}) {
1095         print ".br\n.BI \"    $parameter\"\n";
1096         if ($count == $#{$args{'parameterlist'}}) {
1097             print "\n};\n";
1098             last;
1099         }
1100         else {
1101             print ", \n.br\n";
1102         }
1103         $count++;
1104     }
1105
1106     print ".SH Constants\n";
1107     foreach $parameter (@{$args{'parameterlist'}}) {
1108         my $parameter_name = $parameter;
1109         $parameter_name =~ s/\[.*//;
1110
1111         print ".IP \"".$parameter."\" 12\n";
1112         output_highlight($args{'parameterdescs'}{$parameter_name});
1113     }
1114     foreach $section (@{$args{'sectionlist'}}) {
1115         print ".SH \"$section\"\n";
1116         output_highlight($args{'sections'}{$section});
1117     }
1118 }
1119
1120 ##
1121 # output struct in man
1122 sub output_struct_man(%) {
1123     my %args = %{$_[0]};
1124     my ($parameter, $section);
1125
1126     print ".TH \"$args{'module'}\" 9 \"".$args{'type'}." ".$args{'struct'}."\" \"$man_date\" \"API Manual\" LINUX\n";
1127
1128     print ".SH NAME\n";
1129     print $args{'type'}." ".$args{'struct'}." \\- ".$args{'purpose'}."\n";
1130
1131     print ".SH SYNOPSIS\n";
1132     print $args{'type'}." ".$args{'struct'}." {\n.br\n";
1133
1134     foreach my $parameter (@{$args{'parameterlist'}}) {
1135         if ($parameter =~ /^#/) {
1136             print ".BI \"$parameter\"\n.br\n";
1137             next;
1138         }
1139         my $parameter_name = $parameter;
1140         $parameter_name =~ s/\[.*//;
1141
1142         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1143         $type = $args{'parametertypes'}{$parameter};
1144         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1145             # pointer-to-function
1146             print ".BI \"    ".$1."\" ".$parameter." \") (".$2.")"."\"\n;\n";
1147         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1148             # bitfield
1149             print ".BI \"    ".$1."\ \" ".$parameter.$2." \""."\"\n;\n";
1150         } else {
1151             $type =~ s/([^\*])$/$1 /;
1152             print ".BI \"    ".$type."\" ".$parameter." \""."\"\n;\n";
1153         }
1154         print "\n.br\n";
1155     }
1156     print "};\n.br\n";
1157
1158     print ".SH Members\n";
1159     foreach $parameter (@{$args{'parameterlist'}}) {
1160         ($parameter =~ /^#/) && next;
1161
1162         my $parameter_name = $parameter;
1163         $parameter_name =~ s/\[.*//;
1164
1165         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1166         print ".IP \"".$parameter."\" 12\n";
1167         output_highlight($args{'parameterdescs'}{$parameter_name});
1168     }
1169     foreach $section (@{$args{'sectionlist'}}) {
1170         print ".SH \"$section\"\n";
1171         output_highlight($args{'sections'}{$section});
1172     }
1173 }
1174
1175 ##
1176 # output typedef in man
1177 sub output_typedef_man(%) {
1178     my %args = %{$_[0]};
1179     my ($parameter, $section);
1180
1181     print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
1182
1183     print ".SH NAME\n";
1184     print "typedef ".$args{'typedef'}." \\- ".$args{'purpose'}."\n";
1185
1186     foreach $section (@{$args{'sectionlist'}}) {
1187         print ".SH \"$section\"\n";
1188         output_highlight($args{'sections'}{$section});
1189     }
1190 }
1191
1192 sub output_blockhead_man(%) {
1193     my %args = %{$_[0]};
1194     my ($parameter, $section);
1195     my $count;
1196
1197     print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
1198
1199     foreach $section (@{$args{'sectionlist'}}) {
1200         print ".SH \"$section\"\n";
1201         output_highlight($args{'sections'}{$section});
1202     }
1203 }
1204
1205 ##
1206 # output in text
1207 sub output_function_text(%) {
1208     my %args = %{$_[0]};
1209     my ($parameter, $section);
1210     my $start;
1211
1212     print "Name:\n\n";
1213     print $args{'function'}." - ".$args{'purpose'}."\n";
1214
1215     print "\nSynopsis:\n\n";
1216     if ($args{'functiontype'} ne "") {
1217         $start = $args{'functiontype'}." ".$args{'function'}." (";
1218     } else {
1219         $start = $args{'function'}." (";
1220     }
1221     print $start;
1222
1223     my $count = 0;
1224     foreach my $parameter (@{$args{'parameterlist'}}) {
1225         $type = $args{'parametertypes'}{$parameter};
1226         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1227             # pointer-to-function
1228             print $1.$parameter.") (".$2;
1229         } else {
1230             print $type." ".$parameter;
1231         }
1232         if ($count != $#{$args{'parameterlist'}}) {
1233             $count++;
1234             print ",\n";
1235             print " " x length($start);
1236         } else {
1237             print ");\n\n";
1238         }
1239     }
1240
1241     print "Arguments:\n\n";
1242     foreach $parameter (@{$args{'parameterlist'}}) {
1243         my $parameter_name = $parameter;
1244         $parameter_name =~ s/\[.*//;
1245
1246         print $parameter."\n\t".$args{'parameterdescs'}{$parameter_name}."\n";
1247     }
1248     output_section_text(@_);
1249 }
1250
1251 #output sections in text
1252 sub output_section_text(%) {
1253     my %args = %{$_[0]};
1254     my $section;
1255
1256     print "\n";
1257     foreach $section (@{$args{'sectionlist'}}) {
1258         print "$section:\n\n";
1259         output_highlight($args{'sections'}{$section});
1260     }
1261     print "\n\n";
1262 }
1263
1264 # output enum in text
1265 sub output_enum_text(%) {
1266     my %args = %{$_[0]};
1267     my ($parameter);
1268     my $count;
1269     print "Enum:\n\n";
1270
1271     print "enum ".$args{'enum'}." - ".$args{'purpose'}."\n\n";
1272     print "enum ".$args{'enum'}." {\n";
1273     $count = 0;
1274     foreach $parameter (@{$args{'parameterlist'}}) {
1275         print "\t$parameter";
1276         if ($count != $#{$args{'parameterlist'}}) {
1277             $count++;
1278             print ",";
1279         }
1280         print "\n";
1281     }
1282     print "};\n\n";
1283
1284     print "Constants:\n\n";
1285     foreach $parameter (@{$args{'parameterlist'}}) {
1286         print "$parameter\n\t";
1287         print $args{'parameterdescs'}{$parameter}."\n";
1288     }
1289
1290     output_section_text(@_);
1291 }
1292
1293 # output typedef in text
1294 sub output_typedef_text(%) {
1295     my %args = %{$_[0]};
1296     my ($parameter);
1297     my $count;
1298     print "Typedef:\n\n";
1299
1300     print "typedef ".$args{'typedef'}." - ".$args{'purpose'}."\n";
1301     output_section_text(@_);
1302 }
1303
1304 # output struct as text
1305 sub output_struct_text(%) {
1306     my %args = %{$_[0]};
1307     my ($parameter);
1308
1309     print $args{'type'}." ".$args{'struct'}." - ".$args{'purpose'}."\n\n";
1310     print $args{'type'}." ".$args{'struct'}." {\n";
1311     foreach $parameter (@{$args{'parameterlist'}}) {
1312         if ($parameter =~ /^#/) {
1313             print "$parameter\n";
1314             next;
1315         }
1316
1317         my $parameter_name = $parameter;
1318         $parameter_name =~ s/\[.*//;
1319
1320         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1321         $type = $args{'parametertypes'}{$parameter};
1322         if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
1323             # pointer-to-function
1324             print "\t$1 $parameter) ($2);\n";
1325         } elsif ($type =~ m/^(.*?)\s*(:.*)/) {
1326             # bitfield
1327             print "\t$1 $parameter$2;\n";
1328         } else {
1329             print "\t".$type." ".$parameter.";\n";
1330         }
1331     }
1332     print "};\n\n";
1333
1334     print "Members:\n\n";
1335     foreach $parameter (@{$args{'parameterlist'}}) {
1336         ($parameter =~ /^#/) && next;
1337
1338         my $parameter_name = $parameter;
1339         $parameter_name =~ s/\[.*//;
1340
1341         ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1342         print "$parameter\n\t";
1343         print $args{'parameterdescs'}{$parameter_name}."\n";
1344     }
1345     print "\n";
1346     output_section_text(@_);
1347 }
1348
1349 sub output_blockhead_text(%) {
1350     my %args = %{$_[0]};
1351     my ($parameter, $section);
1352
1353     foreach $section (@{$args{'sectionlist'}}) {
1354         print " $section:\n";
1355         print "    -> ";
1356         output_highlight($args{'sections'}{$section});
1357     }
1358 }
1359
1360 ##
1361 # generic output function for all types (function, struct/union, typedef, enum);
1362 # calls the generated, variable output_ function name based on
1363 # functype and output_mode
1364 sub output_declaration {
1365     no strict 'refs';
1366     my $name = shift;
1367     my $functype = shift;
1368     my $func = "output_${functype}_$output_mode";
1369     if (($function_only==0) ||
1370         ( $function_only == 1 && defined($function_table{$name})) ||
1371         ( $function_only == 2 && !defined($function_table{$name})))
1372     {
1373         &$func(@_);
1374         $section_counter++;
1375     }
1376 }
1377
1378 ##
1379 # generic output function - calls the right one based on current output mode.
1380 sub output_blockhead {
1381     no strict 'refs';
1382     my $func = "output_blockhead_".$output_mode;
1383     &$func(@_);
1384     $section_counter++;
1385 }
1386
1387 ##
1388 # takes a declaration (struct, union, enum, typedef) and
1389 # invokes the right handler. NOT called for functions.
1390 sub dump_declaration($$) {
1391     no strict 'refs';
1392     my ($prototype, $file) = @_;
1393     my $func = "dump_".$decl_type;
1394     &$func(@_);
1395 }
1396
1397 sub dump_union($$) {
1398     dump_struct(@_);
1399 }
1400
1401 sub dump_struct($$) {
1402     my $x = shift;
1403     my $file = shift;
1404
1405     if ($x =~/(struct|union)\s+(\w+)\s*{(.*)}/) {
1406         $declaration_name = $2;
1407         my $members = $3;
1408
1409         # ignore embedded structs or unions
1410         $members =~ s/{.*}//g;
1411
1412         # ignore members marked private:
1413         $members =~ s/\/\*.*?private:.*?public:.*?\*\///gos;
1414         $members =~ s/\/\*.*?private:.*//gos;
1415         # strip comments:
1416         $members =~ s/\/\*.*?\*\///gos;
1417
1418         create_parameterlist($members, ';', $file);
1419
1420         output_declaration($declaration_name,
1421                            'struct',
1422                            {'struct' => $declaration_name,
1423                             'module' => $modulename,
1424                             'parameterlist' => \@parameterlist,
1425                             'parameterdescs' => \%parameterdescs,
1426                             'parametertypes' => \%parametertypes,
1427                             'sectionlist' => \@sectionlist,
1428                             'sections' => \%sections,
1429                             'purpose' => $declaration_purpose,
1430                             'type' => $decl_type
1431                            });
1432     }
1433     else {
1434         print STDERR "Error(${file}:$.): Cannot parse struct or union!\n";
1435         ++$errors;
1436     }
1437 }
1438
1439 sub dump_enum($$) {
1440     my $x = shift;
1441     my $file = shift;
1442
1443     $x =~ s@/\*.*?\*/@@gos;     # strip comments.
1444     if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
1445         $declaration_name = $1;
1446         my $members = $2;
1447
1448         foreach my $arg (split ',', $members) {
1449             $arg =~ s/^\s*(\w+).*/$1/;
1450             push @parameterlist, $arg;
1451             if (!$parameterdescs{$arg}) {
1452                 $parameterdescs{$arg} = $undescribed;
1453                 print STDERR "Warning(${file}:$.): Enum value '$arg' ".
1454                     "not described in enum '$declaration_name'\n";
1455             }
1456
1457         }
1458
1459         output_declaration($declaration_name,
1460                            'enum',
1461                            {'enum' => $declaration_name,
1462                             'module' => $modulename,
1463                             'parameterlist' => \@parameterlist,
1464                             'parameterdescs' => \%parameterdescs,
1465                             'sectionlist' => \@sectionlist,
1466                             'sections' => \%sections,
1467                             'purpose' => $declaration_purpose
1468                            });
1469     }
1470     else {
1471         print STDERR "Error(${file}:$.): Cannot parse enum!\n";
1472         ++$errors;
1473     }
1474 }
1475
1476 sub dump_typedef($$) {
1477     my $x = shift;
1478     my $file = shift;
1479
1480     $x =~ s@/\*.*?\*/@@gos;     # strip comments.
1481     while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1482         $x =~ s/\(*.\)\s*;$/;/;
1483         $x =~ s/\[*.\]\s*;$/;/;
1484     }
1485
1486     if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1487         $declaration_name = $1;
1488
1489         output_declaration($declaration_name,
1490                            'typedef',
1491                            {'typedef' => $declaration_name,
1492                             'module' => $modulename,
1493                             'sectionlist' => \@sectionlist,
1494                             'sections' => \%sections,
1495                             'purpose' => $declaration_purpose
1496                            });
1497     }
1498     else {
1499         print STDERR "Error(${file}:$.): Cannot parse typedef!\n";
1500         ++$errors;
1501     }
1502 }
1503
1504 sub create_parameterlist($$$) {
1505     my $args = shift;
1506     my $splitter = shift;
1507     my $file = shift;
1508     my $type;
1509     my $param;
1510
1511     # temporarily replace commas inside function pointer definition
1512     while ($args =~ /(\([^\),]+),/) {
1513         $args =~ s/(\([^\),]+),/$1#/g;
1514     }
1515
1516     foreach my $arg (split($splitter, $args)) {
1517         # strip comments
1518         $arg =~ s/\/\*.*\*\///;
1519         # strip leading/trailing spaces
1520         $arg =~ s/^\s*//;
1521         $arg =~ s/\s*$//;
1522         $arg =~ s/\s+/ /;
1523
1524         if ($arg =~ /^#/) {
1525             # Treat preprocessor directive as a typeless variable just to fill
1526             # corresponding data structures "correctly". Catch it later in
1527             # output_* subs.
1528             push_parameter($arg, "", $file);
1529         } elsif ($arg =~ m/\(.+\)\s*\(/) {
1530             # pointer-to-function
1531             $arg =~ tr/#/,/;
1532             $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
1533             $param = $1;
1534             $type = $arg;
1535             $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1536             push_parameter($param, $type, $file);
1537         } elsif ($arg) {
1538             $arg =~ s/\s*:\s*/:/g;
1539             $arg =~ s/\s*\[/\[/g;
1540
1541             my @args = split('\s*,\s*', $arg);
1542             if ($args[0] =~ m/\*/) {
1543                 $args[0] =~ s/(\*+)\s*/ $1/;
1544             }
1545
1546             my @first_arg;
1547             if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1548                     shift @args;
1549                     push(@first_arg, split('\s+', $1));
1550                     push(@first_arg, $2);
1551             } else {
1552                     @first_arg = split('\s+', shift @args);
1553             }
1554
1555             unshift(@args, pop @first_arg);
1556             $type = join " ", @first_arg;
1557
1558             foreach $param (@args) {
1559                 if ($param =~ m/^(\*+)\s*(.*)/) {
1560                     push_parameter($2, "$type $1", $file);
1561                 }
1562                 elsif ($param =~ m/(.*?):(\d+)/) {
1563                     if ($type ne "") { # skip unnamed bit-fields
1564                         push_parameter($1, "$type:$2", $file)
1565                     }
1566                 }
1567                 else {
1568                     push_parameter($param, $type, $file);
1569                 }
1570             }
1571         }
1572     }
1573 }
1574
1575 sub push_parameter($$$) {
1576         my $param = shift;
1577         my $type = shift;
1578         my $file = shift;
1579
1580         if (($anon_struct_union == 1) && ($type eq "") &&
1581             ($param eq "}")) {
1582                 return;         # ignore the ending }; from anon. struct/union
1583         }
1584
1585         $anon_struct_union = 0;
1586         my $param_name = $param;
1587         $param_name =~ s/\[.*//;
1588
1589         if ($type eq "" && $param =~ /\.\.\.$/)
1590         {
1591             $type="";
1592             $parameterdescs{$param} = "variable arguments";
1593         }
1594         elsif ($type eq "" && ($param eq "" or $param eq "void"))
1595         {
1596             $type="";
1597             $param="void";
1598             $parameterdescs{void} = "no arguments";
1599         }
1600         elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1601         # handle unnamed (anonymous) union or struct:
1602         {
1603                 $type = $param;
1604                 $param = "{unnamed_" . $param . "}";
1605                 $parameterdescs{$param} = "anonymous\n";
1606                 $anon_struct_union = 1;
1607         }
1608
1609         # warn if parameter has no description
1610         # (but ignore ones starting with # as these are not parameters
1611         # but inline preprocessor statements);
1612         # also ignore unnamed structs/unions;
1613         if (!$anon_struct_union) {
1614         if (!defined $parameterdescs{$param_name} && $param_name !~ /^#/) {
1615
1616             $parameterdescs{$param_name} = $undescribed;
1617
1618             if (($type eq 'function') || ($type eq 'enum')) {
1619                 print STDERR "Warning(${file}:$.): Function parameter ".
1620                     "or member '$param' not " .
1621                     "described in '$declaration_name'\n";
1622             }
1623             print STDERR "Warning(${file}:$.):".
1624                          " No description found for parameter '$param'\n";
1625             ++$warnings;
1626         }
1627         }
1628
1629         push @parameterlist, $param;
1630         $parametertypes{$param} = $type;
1631 }
1632
1633 ##
1634 # takes a function prototype and the name of the current file being
1635 # processed and spits out all the details stored in the global
1636 # arrays/hashes.
1637 sub dump_function($$) {
1638     my $prototype = shift;
1639     my $file = shift;
1640
1641     $prototype =~ s/^static +//;
1642     $prototype =~ s/^extern +//;
1643     $prototype =~ s/^asmlinkage +//;
1644     $prototype =~ s/^inline +//;
1645     $prototype =~ s/^__inline__ +//;
1646     $prototype =~ s/^__inline +//;
1647     $prototype =~ s/^__always_inline +//;
1648     $prototype =~ s/^noinline +//;
1649     $prototype =~ s/__devinit +//;
1650     $prototype =~ s/__init +//;
1651     $prototype =~ s/^#define\s+//; #ak added
1652     $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//;
1653
1654     # Yes, this truly is vile.  We are looking for:
1655     # 1. Return type (may be nothing if we're looking at a macro)
1656     # 2. Function name
1657     # 3. Function parameters.
1658     #
1659     # All the while we have to watch out for function pointer parameters
1660     # (which IIRC is what the two sections are for), C types (these
1661     # regexps don't even start to express all the possibilities), and
1662     # so on.
1663     #
1664     # If you mess with these regexps, it's a good idea to check that
1665     # the following functions' documentation still comes out right:
1666     # - parport_register_device (function pointer parameters)
1667     # - atomic_set (macro)
1668     # - pci_match_device, __copy_to_user (long return type)
1669
1670     if ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1671         $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1672         $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1673         $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1674         $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1675         $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1676         $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1677         $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1678         $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1679         $prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1680         $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1681         $prototype =~ m/^(\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1682         $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1683         $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1684         $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1685         $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1686         $prototype =~ m/^(\w+\s+\w+\s*\*\s*\w+\s*\*\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
1687         $return_type = $1;
1688         $declaration_name = $2;
1689         my $args = $3;
1690
1691         create_parameterlist($args, ',', $file);
1692     } else {
1693         print STDERR "Error(${file}:$.): cannot understand prototype: '$prototype'\n";
1694         ++$errors;
1695         return;
1696     }
1697
1698     output_declaration($declaration_name,
1699                        'function',
1700                        {'function' => $declaration_name,
1701                         'module' => $modulename,
1702                         'functiontype' => $return_type,
1703                         'parameterlist' => \@parameterlist,
1704                         'parameterdescs' => \%parameterdescs,
1705                         'parametertypes' => \%parametertypes,
1706                         'sectionlist' => \@sectionlist,
1707                         'sections' => \%sections,
1708                         'purpose' => $declaration_purpose
1709                        });
1710 }
1711
1712 sub process_file($);
1713
1714 # Read the file that maps relative names to absolute names for
1715 # separate source and object directories and for shadow trees.
1716 if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
1717         my ($relname, $absname);
1718         while(<SOURCE_MAP>) {
1719                 chop();
1720                 ($relname, $absname) = (split())[0..1];
1721                 $relname =~ s:^/+::;
1722                 $source_map{$relname} = $absname;
1723         }
1724         close(SOURCE_MAP);
1725 }
1726
1727 if ($filelist) {
1728         open(FLIST,"<$filelist") or die "Can't open file list $filelist";
1729         while(<FLIST>) {
1730                 chop;
1731                 process_file($_);
1732         }
1733 }
1734
1735 foreach (@ARGV) {
1736     chomp;
1737     process_file($_);
1738 }
1739 if ($verbose && $errors) {
1740   print STDERR "$errors errors\n";
1741 }
1742 if ($verbose && $warnings) {
1743   print STDERR "$warnings warnings\n";
1744 }
1745
1746 exit($errors);
1747
1748 sub reset_state {
1749     $function = "";
1750     %constants = ();
1751     %parameterdescs = ();
1752     %parametertypes = ();
1753     @parameterlist = ();
1754     %sections = ();
1755     @sectionlist = ();
1756     $prototype = "";
1757
1758     $state = 0;
1759 }
1760
1761 sub syscall_munge() {
1762         my $void = 0;
1763
1764         $prototype =~ s@[\r\n\t]+@ @gos; # strip newlines/CR's/tabs
1765 ##      if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1766         if ($prototype =~ m/SYSCALL_DEFINE0/) {
1767                 $void = 1;
1768 ##              $prototype = "long sys_$1(void)";
1769         }
1770
1771         $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1772         if ($prototype =~ m/long (sys_.*?),/) {
1773                 $prototype =~ s/,/\(/;
1774         } elsif ($void) {
1775                 $prototype =~ s/\)/\(void\)/;
1776         }
1777
1778         # now delete all of the odd-number commas in $prototype
1779         # so that arg types & arg names don't have a comma between them
1780         my $count = 0;
1781         my $len = length($prototype);
1782         if ($void) {
1783                 $len = 0;       # skip the for-loop
1784         }
1785         for (my $ix = 0; $ix < $len; $ix++) {
1786                 if (substr($prototype, $ix, 1) eq ',') {
1787                         $count++;
1788                         if ($count % 2 == 1) {
1789                                 substr($prototype, $ix, 1) = ' ';
1790                         }
1791                 }
1792         }
1793 }
1794
1795 sub process_state3_function($$) {
1796     my $x = shift;
1797     my $file = shift;
1798
1799     $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1800
1801     if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#define/)) {
1802         # do nothing
1803     }
1804     elsif ($x =~ /([^\{]*)/) {
1805         $prototype .= $1;
1806     }
1807     if (($x =~ /\{/) || ($x =~ /\#define/) || ($x =~ /;/)) {
1808         $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
1809         $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1810         $prototype =~ s@^\s+@@gos; # strip leading spaces
1811         if ($prototype =~ /SYSCALL_DEFINE/) {
1812                 syscall_munge();
1813         }
1814         dump_function($prototype, $file);
1815         reset_state();
1816     }
1817 }
1818
1819 sub process_state3_type($$) {
1820     my $x = shift;
1821     my $file = shift;
1822
1823     $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1824     $x =~ s@^\s+@@gos; # strip leading spaces
1825     $x =~ s@\s+$@@gos; # strip trailing spaces
1826     $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1827
1828     if ($x =~ /^#/) {
1829         # To distinguish preprocessor directive from regular declaration later.
1830         $x .= ";";
1831     }
1832
1833     while (1) {
1834         if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
1835             $prototype .= $1 . $2;
1836             ($2 eq '{') && $brcount++;
1837             ($2 eq '}') && $brcount--;
1838             if (($2 eq ';') && ($brcount == 0)) {
1839                 dump_declaration($prototype,$file);
1840                 reset_state();
1841                 last;
1842             }
1843             $x = $3;
1844         } else {
1845             $prototype .= $x;
1846             last;
1847         }
1848     }
1849 }
1850
1851 # xml_escape: replace <, >, and & in the text stream;
1852 #
1853 # however, formatting controls that are generated internally/locally in the
1854 # kernel-doc script are not escaped here; instead, they begin life like
1855 # $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
1856 # are converted to their mnemonic-expected output, without the 4 * '\' & ':',
1857 # just before actual output; (this is done by local_unescape())
1858 sub xml_escape($) {
1859         my $text = shift;
1860         if (($output_mode eq "text") || ($output_mode eq "man")) {
1861                 return $text;
1862         }
1863         $text =~ s/\&/\\\\\\amp;/g;
1864         $text =~ s/\</\\\\\\lt;/g;
1865         $text =~ s/\>/\\\\\\gt;/g;
1866         return $text;
1867 }
1868
1869 # convert local escape strings to html
1870 # local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
1871 sub local_unescape($) {
1872         my $text = shift;
1873         if (($output_mode eq "text") || ($output_mode eq "man")) {
1874                 return $text;
1875         }
1876         $text =~ s/\\\\\\\\lt:/</g;
1877         $text =~ s/\\\\\\\\gt:/>/g;
1878         return $text;
1879 }
1880
1881 sub process_file($) {
1882     my $file;
1883     my $identifier;
1884     my $func;
1885     my $descr;
1886     my $initial_section_counter = $section_counter;
1887
1888     if (defined($ENV{'SRCTREE'})) {
1889         $file = "$ENV{'SRCTREE'}" . "/" . "@_";
1890     }
1891     else {
1892         $file = "@_";
1893     }
1894     if (defined($source_map{$file})) {
1895         $file = $source_map{$file};
1896     }
1897
1898     if (!open(IN,"<$file")) {
1899         print STDERR "Error: Cannot open file $file\n";
1900         ++$errors;
1901         return;
1902     }
1903
1904     $section_counter = 0;
1905     while (<IN>) {
1906         if ($state == 0) {
1907             if (/$doc_start/o) {
1908                 $state = 1;             # next line is always the function name
1909                 $in_doc_sect = 0;
1910             }
1911         } elsif ($state == 1) { # this line is the function name (always)
1912             if (/$doc_block/o) {
1913                 $state = 4;
1914                 $contents = "";
1915                 if ( $1 eq "" ) {
1916                         $section = $section_intro;
1917                 } else {
1918                         $section = $1;
1919                 }
1920             }
1921             elsif (/$doc_decl/o) {
1922                 $identifier = $1;
1923                 if (/\s*([\w\s]+?)\s*-/) {
1924                     $identifier = $1;
1925                 }
1926
1927                 $state = 2;
1928                 if (/-(.*)/) {
1929                     # strip leading/trailing/multiple spaces
1930                     $descr= $1;
1931                     $descr =~ s/^\s*//;
1932                     $descr =~ s/\s*$//;
1933                     $descr =~ s/\s+/ /;
1934                     $declaration_purpose = xml_escape($descr);
1935                 } else {
1936                     $declaration_purpose = "";
1937                 }
1938
1939                 if (($declaration_purpose eq "") && $verbose) {
1940                         print STDERR "Warning(${file}:$.): missing initial short description on line:\n";
1941                         print STDERR $_;
1942                         ++$warnings;
1943                 }
1944
1945                 if ($identifier =~ m/^struct/) {
1946                     $decl_type = 'struct';
1947                 } elsif ($identifier =~ m/^union/) {
1948                     $decl_type = 'union';
1949                 } elsif ($identifier =~ m/^enum/) {
1950                     $decl_type = 'enum';
1951                 } elsif ($identifier =~ m/^typedef/) {
1952                     $decl_type = 'typedef';
1953                 } else {
1954                     $decl_type = 'function';
1955                 }
1956
1957                 if ($verbose) {
1958                     print STDERR "Info(${file}:$.): Scanning doc for $identifier\n";
1959                 }
1960             } else {
1961                 print STDERR "Warning(${file}:$.): Cannot understand $_ on line $.",
1962                 " - I thought it was a doc line\n";
1963                 ++$warnings;
1964                 $state = 0;
1965             }
1966         } elsif ($state == 2) { # look for head: lines, and include content
1967             if (/$doc_sect/o) {
1968                 $newsection = $1;
1969                 $newcontents = $2;
1970
1971                 if (($contents ne "") && ($contents ne "\n")) {
1972                     if (!$in_doc_sect && $verbose) {
1973                         print STDERR "Warning(${file}:$.): contents before sections\n";
1974                         ++$warnings;
1975                     }
1976                     dump_section($file, $section, xml_escape($contents));
1977                     $section = $section_default;
1978                 }
1979
1980                 $in_doc_sect = 1;
1981                 $contents = $newcontents;
1982                 if ($contents ne "") {
1983                     while ((substr($contents, 0, 1) eq " ") ||
1984                         substr($contents, 0, 1) eq "\t") {
1985                             $contents = substr($contents, 1);
1986                     }
1987                     $contents .= "\n";
1988                 }
1989                 $section = $newsection;
1990             } elsif (/$doc_end/) {
1991
1992                 if ($contents ne "") {
1993                     dump_section($file, $section, xml_escape($contents));
1994                     $section = $section_default;
1995                     $contents = "";
1996                 }
1997                 # look for doc_com + <text> + doc_end:
1998                 if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
1999                     print STDERR "Warning(${file}:$.): suspicious ending line: $_";
2000                     ++$warnings;
2001                 }
2002
2003                 $prototype = "";
2004                 $state = 3;
2005                 $brcount = 0;
2006 #               print STDERR "end of doc comment, looking for prototype\n";
2007             } elsif (/$doc_content/) {
2008                 # miguel-style comment kludge, look for blank lines after
2009                 # @parameter line to signify start of description
2010                 if ($1 eq "" &&
2011                         ($section =~ m/^@/ || $section eq $section_context)) {
2012                     dump_section($file, $section, xml_escape($contents));
2013                     $section = $section_default;
2014                     $contents = "";
2015                 } else {
2016                     $contents .= $1."\n";
2017                 }
2018             } else {
2019                 # i dont know - bad line?  ignore.
2020                 print STDERR "Warning(${file}:$.): bad line: $_";
2021                 ++$warnings;
2022             }
2023         } elsif ($state == 3) { # scanning for function '{' (end of prototype)
2024             if ($decl_type eq 'function') {
2025                 process_state3_function($_, $file);
2026             } else {
2027                 process_state3_type($_, $file);
2028             }
2029         } elsif ($state == 4) {
2030                 # Documentation block
2031                 if (/$doc_block/) {
2032                         dump_doc_section($file, $section, xml_escape($contents));
2033                         $contents = "";
2034                         $function = "";
2035                         %constants = ();
2036                         %parameterdescs = ();
2037                         %parametertypes = ();
2038                         @parameterlist = ();
2039                         %sections = ();
2040                         @sectionlist = ();
2041                         $prototype = "";
2042                         if ( $1 eq "" ) {
2043                                 $section = $section_intro;
2044                         } else {
2045                                 $section = $1;
2046                         }
2047                 }
2048                 elsif (/$doc_end/)
2049                 {
2050                         dump_doc_section($file, $section, xml_escape($contents));
2051                         $contents = "";
2052                         $function = "";
2053                         %constants = ();
2054                         %parameterdescs = ();
2055                         %parametertypes = ();
2056                         @parameterlist = ();
2057                         %sections = ();
2058                         @sectionlist = ();
2059                         $prototype = "";
2060                         $state = 0;
2061                 }
2062                 elsif (/$doc_content/)
2063                 {
2064                         if ( $1 eq "" )
2065                         {
2066                                 $contents .= $blankline;
2067                         }
2068                         else
2069                         {
2070                                 $contents .= $1 . "\n";
2071                         }
2072                 }
2073         }
2074     }
2075     if ($initial_section_counter == $section_counter) {
2076         print STDERR "Warning(${file}): no structured comments found\n";
2077         if ($output_mode eq "xml") {
2078             # The template wants at least one RefEntry here; make one.
2079             print "<refentry>\n";
2080             print " <refnamediv>\n";
2081             print "  <refname>\n";
2082             print "   ${file}\n";
2083             print "  </refname>\n";
2084             print "  <refpurpose>\n";
2085             print "   Document generation inconsistency\n";
2086             print "  </refpurpose>\n";
2087             print " </refnamediv>\n";
2088             print " <refsect1>\n";
2089             print "  <title>\n";
2090             print "   Oops\n";
2091             print "  </title>\n";
2092             print "  <warning>\n";
2093             print "   <para>\n";
2094             print "    The template for this document tried to insert\n";
2095             print "    the structured comment from the file\n";
2096             print "    <filename>${file}</filename> at this point,\n";
2097             print "    but none was found.\n";
2098             print "    This dummy section is inserted to allow\n";
2099             print "    generation to continue.\n";
2100             print "   </para>\n";
2101             print "  </warning>\n";
2102             print " </refsect1>\n";
2103             print "</refentry>\n";
2104         }
2105     }
2106 }