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/server.h.
   5 #
   6 # Copyright (C) 1998 Alexandre Julliard
   7 #
   8
   9 %formats =
  10 (
  11     "int"           => "%d",
  12     "char"          => "%c",
  13     "unsigned char" => "%02x",
  14     "unsigned short"=> "%04x",
  15     "unsigned int"  => "%08x",
  16     "void*"         => "%p",
  17     "time_t"        => "%ld",
  18     "handle_t"      => "%d",
  19 );
  20
  21 my @requests = ();
  22 my %replies = ();
  23
  24 open(SERVER,"include/server.h") or die "Can't open include/server.h";
  25
  26 ### Parse server.h to find request/reply structure definitions
  27
  28 my @trace_lines = ();
  29 my $protocol = 0;  # server protocol version
  30
  31 while (<SERVER>)
  32 {
  33     if (/^struct +(\w+)_request/) { &DO_REQUEST($1); }
  34     if (/^\#define SERVER_PROTOCOL_VERSION (\d+)/) { $protocol = $1 + 1; }
  35 }
  36
  37 ### Output the dumping function tables
  38
  39 push @trace_lines, "static const dump_func req_dumpers[REQ_NB_REQUESTS] = {\n";
  40 foreach $req (@requests)
  41 {
  42     push @trace_lines, "    (dump_func)dump_${req}_request,\n";
  43 }
  44 push @trace_lines, "};\n\n";
  45
  46 push @trace_lines, "static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {\n";
  47 foreach $req (@requests)
  48 {
  49     push @trace_lines, "    (dump_func)", $replies{$req} ? "dump_${req}_reply,\n" : "0,\n";
  50 }
  51 push @trace_lines, "};\n\n";
  52
  53 push @trace_lines, "static const char * const req_names[REQ_NB_REQUESTS] = {\n";
  54 foreach $req (@requests)
  55 {
  56     push @trace_lines, "    \"$req\",\n";
  57 }
  58 push @trace_lines, "};\n";
  59
  60 REPLACE_IN_FILE( "server/trace.c", @trace_lines );
  61
  62 ### Replace the request list in server.h by the new values
  63
  64 my @server_lines = ();
  65
  66 push @server_lines, "enum request\n{\n";
  67 foreach $req (@requests) { push @server_lines, "    REQ_$req,\n"; }
  68 push @server_lines, "    REQ_NB_REQUESTS\n};\n\n";
  69 push @server_lines, "union generic_request\n{\n";
  70 push @server_lines, "    struct request_max_size max_size;\n";
  71 push @server_lines, "    struct request_header header;\n";
  72 foreach $req (@requests) { push @server_lines, "    struct ${req}_request $req;\n"; }
  73 push @server_lines, "};\n\n";
  74 push @server_lines, "#define SERVER_PROTOCOL_VERSION $protocol\n";
  75
  76 REPLACE_IN_FILE( "include/server.h", @server_lines );
  77
  78 ### Output the request handlers list
  79
  80 my @request_lines = ();
  81
  82 foreach $req (@requests) { push @request_lines, "DECL_HANDLER($req);\n"; }
  83 push @request_lines, "\n#ifdef WANT_REQUEST_HANDLERS\n\n";
  84 push @request_lines, "typedef void (*req_handler)( void *req );\n";
  85 push @request_lines, "static const req_handler req_handlers[REQ_NB_REQUESTS] =\n{\n";
  86 foreach $req (@requests)
  87 {
  88     push @request_lines, "    (req_handler)req_$req,\n";
  89 }
  90 push @request_lines, "};\n#endif  /* WANT_REQUEST_HANDLERS */\n";
  91
  92 REPLACE_IN_FILE( "server/request.h", @request_lines );
  93
  94 ### Handle a request structure definition
  95
  96 sub DO_REQUEST
  97 {
  98     my $name = shift;
  99     my @in_struct = ();
 100     my @out_struct = ();
 101     my $got_header = 0;
 102     while (<SERVER>)
 103     {
 104         my ($dir, $type, $var);
 105         last if /^};$/;
 106         next if /^{$/;
 107         s!/\*.*\*/!!g;
 108         next if /^\s*$/;
 109         if (/REQUEST_HEADER/)
 110         {
 111             die "Duplicated header" if $got_header;
 112             die "Header must be first" if ($#in_struct != -1 || $#out_struct != -1);
 113             $got_header++;
 114             next;
 115         }
 116         if (/^\s*(IN|OUT)\s*VARARG\((\w+),(\w+)\)/)
 117         {
 118             $dir = $1;
 119             $var = $2;
 120             $type = "&dump_varargs_" . $3;
 121         }
 122         elsif (/^\s*(IN|OUT)\s*(\w+\**(\s+\w+\**)*)\s+(\w+)(\[[1]\])?;/)
 123         {
 124             $dir = $1;
 125             $type = $2 . ($5 || "");
 126             $var = $4;
 127             die "Unrecognized type $type" unless (defined($formats{$type}) || $5);
 128         }
 129         else
 130         {
 131             die "Unrecognized syntax $_";
 132         }
 133         if ($dir =~ /IN/) { push @in_struct, $type, $var; }
 134         if ($dir =~ /OUT/) { push @out_struct, $type, $var; }
 135     }
 136     die "Missing header" unless $got_header;
 137     push @requests, $name;
 138     &DO_DUMP_FUNC( $name, "request", @in_struct);
 139     if ($#out_struct >= 0)
 140     {
 141         $replies{$name} = 1;
 142         &DO_DUMP_FUNC( $name, "reply", @out_struct);
 143     }
 144 }
 145
 146 ### Generate a dumping function
 147
 148 sub DO_DUMP_FUNC
 149 {
 150     my $name = shift;
 151     my $req = shift;
 152     push @trace_lines, "static void dump_${name}_$req( const struct ${name}_request *req )\n{\n";
 153     while ($#_ >= 0)
 154     {
 155         my $type = shift;
 156         my $var = shift;
 157         if (defined($formats{$type}))
 158         {
 159             if ($formats{$type} =~ /^&(.*)/)
 160             {
 161                 my $func = $1;
 162                 push @trace_lines, "    fprintf( stderr, \" $var=\" );\n";
 163                 if ($type =~ /[1]/) { push @trace_lines, "    $func( req, req->$var );\n"; }
 164                 else { push @trace_lines, "    $func( req, &req->$var );\n"; }
 165                 push @trace_lines, "    fprintf( stderr, \",\" );\n" if ($#_ > 0);
 166             }
 167             else
 168             {
 169                 push @trace_lines, "    fprintf( stderr, \" $var=$formats{$type}";
 170                 push @trace_lines, "," if ($#_ > 0);
 171                 push @trace_lines, "\", ";
 172                 push @trace_lines, "req->$var );\n";
 173             }
 174         }
 175         else  # must be some varargs format
 176         {
 177             if ($type =~ /^&(.*)/)
 178             {
 179                 my $func = $1;
 180                 push @trace_lines, "    fprintf( stderr, \" $var=\" );\n";
 181                 push @trace_lines, "    cur_pos += $func( req );\n";
 182                 push @trace_lines, "    fputc( ',', stderr );\n" if ($#_ > 0);
 183             }
 184             else
 185             {
 186                 push @trace_lines, "    fprintf( stderr, \" $var=\" );\n";
 187                 push @trace_lines, "    dump_varargs_${name}_${req}( req );\n";
 188             }
 189         }
 190     }
 191     push @trace_lines, "}\n\n";
 192 }
 193
 194 ### Replace the contents of a file between ### make_requests ### marks
 195
 196 sub REPLACE_IN_FILE
 197 {
 198     my $name = shift;
 199     my @data = @_;
 200     my @lines = ();
 201     open(FILE,$name) or die "Can't open $name";
 202     while (<FILE>)
 203     {
 204         push @lines, $_;
 205         last if /\#\#\# make_requests begin \#\#\#/;
 206     }
 207     push @lines, "\n", @data;
 208     while (<FILE>)
 209     {
 210         if (/\#\#\# make_requests end \#\#\#/) { push @lines, "\n", $_; last; }
 211     }
 212     push @lines, <FILE>;
 213     open(FILE,">$name") or die "Can't modify $name";
 214     print FILE @lines;
 215     close(FILE);
 216 }