tools/make_requests

   1 #! /usr/bin/perl -w
   2 #
   3 # Build the server/trace.c and server/request.h files
   4 # from the contents of include/wine/server.h.
   5 #
   6 # Copyright (C) 1998 Alexandre Julliard
   7 #
   8 # This library is free software; you can redistribute it and/or
   9 # modify it under the terms of the GNU Lesser General Public
  10 # License as published by the Free Software Foundation; either
  11 # version 2.1 of the License, or (at your option) any later version.
  12 #
  13 # This library is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 # Lesser General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU Lesser General Public
  19 # License along with this library; if not, write to the Free Software
  20 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21 #
  22
  23 %formats =
  24 (
  25     "int"           => "%d",
  26     "short int"     => "%d",
  27     "char"          => "%c",
  28     "unsigned char" => "%02x",
  29     "unsigned short"=> "%04x",
  30     "unsigned int"  => "%08x",
  31     "void*"         => "%p",
  32     "time_t"        => "%ld",
  33     "size_t"        => "%d",
  34     "obj_handle_t"  => "%p",
  35     "atom_t"        => "%04x",
  36     "user_handle_t" => "%p",
  37     "process_id_t"  => "%08x",
  38     "thread_id_t"   => "%08x",
  39     "rectangle_t"   => "&dump_rectangle",
  40     "char_info_t"   => "&dump_char_info",
  41 );
  42
  43 my @requests = ();
  44 my %replies = ();
  45
  46 my @trace_lines = ();
  47
  48 # Get the server protocol version
  49 my $protocol = &GET_PROTOCOL_VERSION;
  50
  51 ### Create server_protocol.h and print header
  52
  53 open SERVER_PROT, ">include/wine/server_protocol.h" or die "Cannot create include/wine/server_protocol.h";
  54 print SERVER_PROT "/*\n * Wine server protocol definitions\n *\n";
  55 print SERVER_PROT " * This file is automatically generated; DO NO EDIT!\n";
  56 print SERVER_PROT " * Edit server/protocol.def instead and re-run tools/make_requests\n";
  57 print SERVER_PROT " */\n\n";
  58 print SERVER_PROT "#ifndef __WINE_WINE_SERVER_PROTOCOL_H\n";
  59 print SERVER_PROT "#define __WINE_WINE_SERVER_PROTOCOL_H\n";
  60
  61 ### Parse requests to find request/reply structure definitions
  62
  63 &PARSE_REQUESTS;
  64
  65 ### Build the request list and structures
  66
  67 print SERVER_PROT "\n\nenum request\n{\n";
  68 foreach $req (@requests) { print SERVER_PROT "    REQ_$req,\n"; }
  69 print SERVER_PROT "    REQ_NB_REQUESTS\n};\n\n";
  70
  71 print SERVER_PROT "union generic_request\n{\n";
  72 print SERVER_PROT "    struct request_max_size max_size;\n";
  73 print SERVER_PROT "    struct request_header request_header;\n";
  74 foreach $req (@requests) { print SERVER_PROT "    struct ${req}_request ${req}_request;\n"; }
  75 print SERVER_PROT "};\n";
  76
  77 print SERVER_PROT "union generic_reply\n{\n";
  78 print SERVER_PROT "    struct request_max_size max_size;\n";
  79 print SERVER_PROT "    struct reply_header reply_header;\n";
  80 foreach $req (@requests) { print SERVER_PROT "    struct ${req}_reply ${req}_reply;\n"; }
  81 print SERVER_PROT "};\n\n";
  82
  83 printf SERVER_PROT "#define SERVER_PROTOCOL_VERSION %d\n\n", $protocol + 1;
  84 print SERVER_PROT "#endif /* __WINE_WINE_SERVER_PROTOCOL_H */\n";
  85 close SERVER_PROT;
  86
  87 ### Output the dumping function tables
  88
  89 push @trace_lines, "static const dump_func req_dumpers[REQ_NB_REQUESTS] = {\n";
  90 foreach $req (@requests)
  91 {
  92     push @trace_lines, "    (dump_func)dump_${req}_request,\n";
  93 }
  94 push @trace_lines, "};\n\n";
  95
  96 push @trace_lines, "static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {\n";
  97 foreach $req (@requests)
  98 {
  99     push @trace_lines, "    (dump_func)", $replies{$req} ? "dump_${req}_reply,\n" : "0,\n";
 100 }
 101 push @trace_lines, "};\n\n";
 102
 103 push @trace_lines, "static const char * const req_names[REQ_NB_REQUESTS] = {\n";
 104 foreach $req (@requests)
 105 {
 106     push @trace_lines, "    \"$req\",\n";
 107 }
 108 push @trace_lines, "};\n";
 109
 110 REPLACE_IN_FILE( "server/trace.c", @trace_lines );
 111
 112 ### Output the request handlers list
 113
 114 my @request_lines = ();
 115
 116 foreach $req (@requests) { push @request_lines, "DECL_HANDLER($req);\n"; }
 117 push @request_lines, "\n#ifdef WANT_REQUEST_HANDLERS\n\n";
 118 push @request_lines, "typedef void (*req_handler)( const void *req, void *reply );\n";
 119 push @request_lines, "static const req_handler req_handlers[REQ_NB_REQUESTS] =\n{\n";
 120 foreach $req (@requests)
 121 {
 122     push @request_lines, "    (req_handler)req_$req,\n";
 123 }
 124 push @request_lines, "};\n#endif  /* WANT_REQUEST_HANDLERS */\n";
 125
 126 REPLACE_IN_FILE( "server/request.h", @request_lines );
 127
 128 ### Parse the request definitions
 129
 130 sub PARSE_REQUESTS
 131 {
 132     # states: 0 = header 1 = declarations 2 = inside @REQ 3 = inside @REPLY
 133     my $state = 0;
 134     my $name = "";
 135     my @in_struct = ();
 136     my @out_struct = ();
 137
 138     open(PROTOCOL,"server/protocol.def") or die "Can't open server/protocol.def";
 139
 140     while (<PROTOCOL>)
 141     {
 142         my ($type, $var);
 143         # strip comments
 144         s!/\*.*\*/!!g;
 145         # strip white space at end of line
 146         s/\s+$//;
 147
 148         if (/^\@HEADER/)
 149         {
 150             die "Misplaced \@HEADER" unless $state == 0;
 151             $state++;
 152             next;
 153         }
 154
 155         # ignore everything while in state 0
 156         next if $state == 0;
 157
 158         if (/^\@REQ\(\s*(\w+)\s*\)/)
 159         {
 160             $name = $1;
 161             die "Misplaced \@REQ" unless $state == 1;
 162             # start a new request
 163             @in_struct = ();
 164             @out_struct = ();
 165             print SERVER_PROT "struct ${name}_request\n{\n";
 166             print SERVER_PROT "    struct request_header __header;\n";
 167             $state++;
 168             next;
 169         }
 170
 171         if (/^\@REPLY/)
 172         {
 173             die "Misplaced \@REPLY" unless $state == 2;
 174             print SERVER_PROT "};\n";
 175             print SERVER_PROT "struct ${name}_reply\n{\n";
 176             print SERVER_PROT "    struct reply_header __header;\n";
 177             $state++;
 178             next;
 179         }
 180
 181         if (/^\@END/)
 182         {
 183             die "Misplaced \@END" unless ($state == 2 || $state == 3);
 184             print SERVER_PROT "};\n";
 185
 186             if ($state == 2)  # build dummy reply struct
 187             {
 188                 print SERVER_PROT "struct ${name}_reply\n{\n";
 189                 print SERVER_PROT "    struct reply_header __header;\n";
 190                 print SERVER_PROT "};\n";
 191             }
 192
 193             # got a complete request
 194             push @requests, $name;
 195             &DO_DUMP_FUNC( $name, "request", @in_struct);
 196             if ($#out_struct >= 0)
 197             {
 198                 $replies{$name} = 1;
 199                 &DO_DUMP_FUNC( $name, "reply", @out_struct);
 200             }
 201             $state = 1;
 202             next;
 203         }
 204
 205         if ($state != 1)
 206         {
 207             # skip empty lines (but keep them in output file)
 208             if (/^$/)
 209             {
 210                 print SERVER_PROT "\n";
 211                 next;
 212             }
 213
 214             if (/^\s*VARARG\((\w+),(\w+),(\w+)\)/)
 215             {
 216                 $var = $1;
 217                 $type = "dump_varargs_" . $2 . "( min(cur_size,req->" . $3 . ") )";
 218                 s!(VARARG\(.*\)\s*;)!/* $1 */!;
 219             }
 220             elsif (/^\s*VARARG\((\w+),(\w+)\)/)
 221             {
 222                 $var = $1;
 223                 $type = "dump_varargs_" . $2 . "( cur_size )";
 224                 s!(VARARG\(.*\)\s*;)!/* $1 */!;
 225             }
 226             elsif (/^\s*(\w+\**(\s+\w+\**)*)\s+(\w+);/)
 227             {
 228                 $type = $1;
 229                 $var = $3;
 230                 die "Unrecognized type $type" unless defined($formats{$type});
 231             }
 232             else
 233             {
 234                 die "Unrecognized syntax $_";
 235             }
 236             if ($state == 2) { push @in_struct, $type, $var; }
 237             if ($state == 3) { push @out_struct, $type, $var; }
 238         }
 239
 240         # Pass it through into the output file
 241         print SERVER_PROT $_ . "\n";
 242     }
 243     close PROTOCOL;
 244 }
 245
 246 ### Generate a dumping function
 247
 248 sub DO_DUMP_FUNC
 249 {
 250     my $name = shift;
 251     my $req = shift;
 252     push @trace_lines, "static void dump_${name}_$req( const struct ${name}_$req *req )\n{\n";
 253     while ($#_ >= 0)
 254     {
 255         my $type = shift;
 256         my $var = shift;
 257         if (defined($formats{$type}))
 258         {
 259             if ($formats{$type} =~ /^&(.*)/)
 260             {
 261                 my $func = $1;
 262                 push @trace_lines, "    fprintf( stderr, \" $var=\" );\n";
 263                 push @trace_lines, "    $func( &req->$var );\n";
 264                 push @trace_lines, "    fprintf( stderr, \",\" );\n" if ($#_ > 0);
 265             }
 266             else
 267             {
 268                 push @trace_lines, "    fprintf( stderr, \" $var=$formats{$type}";
 269                 push @trace_lines, "," if ($#_ > 0);
 270                 push @trace_lines, "\", ";
 271                 push @trace_lines, "req->$var );\n";
 272             }
 273         }
 274         else  # must be some varargs format
 275         {
 276             my $func = $type;
 277             push @trace_lines, "    fprintf( stderr, \" $var=\" );\n";
 278             push @trace_lines, "    $func;\n";
 279             push @trace_lines, "    fputc( ',', stderr );\n" if ($#_ > 0);
 280         }
 281     }
 282     push @trace_lines, "}\n\n";
 283 }
 284
 285 ### Retrieve the server protocol version from the existing server_protocol.h file
 286
 287 sub GET_PROTOCOL_VERSION
 288 {
 289     my $protocol = 0;
 290     open SERVER_PROT, "include/wine/server_protocol.h" or return 0;
 291     while (<SERVER_PROT>)
 292     {
 293         if (/^\#define SERVER_PROTOCOL_VERSION (\d+)/) { $protocol = $1; last; }
 294     }
 295     close SERVER_PROT;
 296     return $protocol;
 297 }
 298
 299 ### Replace the contents of a file between ### make_requests ### marks
 300
 301 sub REPLACE_IN_FILE
 302 {
 303     my $name = shift;
 304     my @data = @_;
 305     my @lines = ();
 306     open(FILE,$name) or die "Can't open $name";
 307     while (<FILE>)
 308     {
 309         push @lines, $_;
 310         last if /\#\#\# make_requests begin \#\#\#/;
 311     }
 312     push @lines, "\n", @data;
 313     while (<FILE>)
 314     {
 315         if (/\#\#\# make_requests end \#\#\#/) { push @lines, "\n", $_; last; }
 316     }
 317     push @lines, <FILE>;
 318     open(FILE,">$name") or die "Can't modify $name";
 319     print FILE @lines;
 320     close(FILE);
 321 }