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