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