tools/process-x11-fields.pl

   1 #!/usr/bin/perl
   2 #
   3 # Script to convert "x11-fields" file, listing fields for
   4 # X11 dissector, into header files declaring field-index
   5 # values and field definitions for those fields.
   6 #
   7 # Copyright 2000, Christophe Tronche <ch.tronche[AT]computer.org>
   8 #
   9 # $Id$
  10 #
  11 # Wireshark - Network traffic analyzer
  12 # By Gerald Combs <gerald@wireshark.org>
  13 # Copyright 1998 Gerald Combs
  14 #
  15 # This program is free software; you can redistribute it and/or
  16 # modify it under the terms of the GNU General Public License
  17 # as published by the Free Software Foundation; either version 2
  18 # of the License, or (at your option) any later version.
  19 #
  20 # This program is distributed in the hope that it will be useful,
  21 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 # GNU General Public License for more details.
  24 #
  25 # You should have received a copy of the GNU General Public License
  26 # along with this program; if not, write to the Free Software
  27 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  28 #
  29
  30 open(DECL, ">x11-declarations.h") || die;
  31 open(REG, ">x11-register-info.h") || die;
  32
  33 sub add_generated_header {
  34     my ($out) = @_;
  35
  36     print $out <<eot
  37 /* Do not modify this file. */
  38 /* It was automatically generated by $0. */
  39 eot
  40     ;
  41     # Since this file is checked in, add its SVN revision
  42     print $out "/* \$"."Id"."\$ */\n\n";
  43
  44     # Add license text
  45     print $out <<eot
  46 /*
  47  * Copyright 2000, Christophe Tronche <ch.tronche[AT]computer.org>
  48  *
  49  * Wireshark - Network traffic analyzer
  50  * By Gerald Combs <gerald[AT]wireshark.org>
  51  * Copyright 1998 Gerald Combs
  52  *
  53  * This program is free software; you can redistribute it and/or modify
  54  * it under the terms of the GNU General Public License as published by
  55  * the Free Software Foundation; either version 2 of the License, or
  56  * (at your option) any later version.
  57  *
  58  * This program is distributed in the hope that it will be useful,
  59  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  60  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  61  * GNU General Public License for more details.
  62  *
  63  * You should have received a copy of the GNU General Public License along
  64  * with this program; if not, write to the Free Software Foundation, Inc.,
  65  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  66  */
  67
  68 eot
  69     ;
  70 }
  71
  72 add_generated_header(DECL);
  73 add_generated_header(REG);
  74
  75 $prefix = '';
  76 $subfieldStringLength = 0;
  77
  78 while(<>) {
  79     s/#.*$//go;
  80     next if /^\s*$/o;
  81     s/^(\s*)//o;
  82     $subfield = $1;
  83
  84     if (length $subfield != $subfieldStringLength) {
  85         if (!length $subfield) {
  86             $prefix = '';
  87         } elsif (length $subfield > $subfieldStringLength) {
  88             $prefix .= "$lastAbbrev.";
  89         } else {
  90             $prefix =~ s/^(.*)\.[^\.]+\.$/$1./o;
  91         }
  92         $subfieldStringLength = length $subfield;
  93     }
  94
  95     @fields = split /\s+/o ;
  96     if ($fields[0] eq '#') {
  97         #
  98         # If the line begins with "#", treat it as a comment, by
  99         # ignoring it.
 100         #
 101         # (We don't support comments at the end of a line; that would
 102         # require some more pain in our simple parser.)
 103         #
 104         next;
 105     }
 106     $abbrev = shift @fields;
 107     $type = shift @fields;
 108     $lastAbbrev = $abbrev;
 109
 110     $field = $prefix.$abbrev;
 111
 112     if ($fields[0] =~ /^\d+$/o) {
 113         #
 114         # This is presumably a Boolean bitfield, and this is the number
 115         # of bits in the parent field.
 116         #
 117         $fieldDisplay = shift @fields;
 118     } else {
 119         #
 120         # The next token is the base for the field.
 121         #
 122         $fieldDisplay = "BASE_".shift @fields;
 123     }
 124
 125     if ($fields[0] eq 'VALS') {
 126         #
 127         # It's an enumerated field, with the value_string table having a
 128         # name based on the field's name.
 129         #
 130         shift @fields;
 131         $fieldStrings = "VALS(${abbrev}_vals)";
 132         $fieldStrings =~ s/-/_/go;
 133     } elsif ($fields[0] =~ /^VALS\(/o) {
 134         #
 135         # It's an enumerated field, with a specified name for the
 136         # value_string table.
 137         #
 138         $fieldStrings = shift @fields;
 139         $fieldStrings =~ s/\)/_vals\)/o;
 140     } else {
 141         #
 142         # It's not an enumerated field.
 143         #
 144         $fieldStrings = 'NULL';
 145     }
 146
 147     if ($fields[0] =~ /^0x/) {
 148         #
 149         # The next token looks like a bitmask for a bitfield.
 150         #
 151         $mask = shift @fields;
 152     } else {
 153         $mask = 0;
 154     }
 155
 156     $rest = join(' ', @fields);
 157     $longName = uc $name;
 158     $longName = $rest if ($rest);
 159     # Don't allow empty blurbs
 160     $longName = $longName eq "" ? "NULL" : "\"$longName\"";
 161
 162     $variable = $field;
 163     $variable =~ s/-/_/go;
 164     $variable =~ s/\./_/go;
 165
 166     print DECL "static int hf_x11_$variable = -1;\n";
 167
 168     print REG <<END;
 169 { &hf_x11_$variable, { "$abbrev", "x11.$field", FT_$type, $fieldDisplay, $fieldStrings, $mask, $longName, HFILL }},
 170 END
 171 }