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#!/usr/bin/env perl
############################################################################
# __________ __ ___.
# Open \______ \ ____ ____ | | _\_ |__ _______ ___
# Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
# Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
# Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
# \/ \/ \/ \/ \/
# $Id$
#
# Copyright (C) 2019 by William Wilgus
#
# All files in this archive are subject to the GNU General Public License.
# See the file COPYING in the source tree root for full license agreement.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
############################################################################
#rockbox to lua define generator, add names of constants to the array to include
my @rockbox_defines = (
'^HZ$',
'^LCD_(DEPTH|HEIGHT|WIDTH)$',
'^MODEL_NAME$',
'^SCREEN_MAIN$',
'^LCD_DEFAULT_(FG|BG)$',
'^LCD_REMOTE_(DEPTH|HEIGHT|WIDTH)$',
'^LCD_.+(BRIGHT|DARK)COLOR',
'^SCREEN_REMOTE$',
'^FONT_SYSFIXED$',
'^FONT_UI$',
'^PLAYLIST_(INSERT|PREPEND|REPLACE)',
'^TOUCHSCREEN_(POINT|BUTTON)$',
'^HOME_DIR$',
'^PLUGIN_DIR$',
'^PLUGIN(_APPS_|_GAMES_|_)DATA_DIR$',
'^ROCKBOX_DIR$',
'^VIEWERS_DATA_DIR$');
my @captured_defines;
my @names_seen;
my @all_defines;
############# precompile regex for speed #############
my $def_regex = qr/#define\s+([^\s\r\n]+)\s+([^\r\n]+)/;
my $quot_regex = qr/.*([\"\']).*/;
my $num_regex = qr/.*([\+\-\*\\|&\d]).*/;
print <<EOF
#include <stdio.h>
#include <stdbool.h>
#define stringify(s) #s
/* auto generated defines */
EOF
;
while(my $line = <STDIN>)
{
if($line =~ $def_regex) #does it begin with #define?
{
push(@all_defines, $line); #save all defines for possible ambiguous macros
$name = $1;
next if $name =~ /^(ATTRIBUTE_|print|__).*/; #don't add reserved
$value = $2;
if(grep($name =~ $_, @rockbox_defines))
{
push(@names_seen, $name);
push(@captured_defines, {'name' => $name, 'value' => $value});
print $line
}
else
{
$name =~ s{(\(.*\))}{}gx; #remove (...) on function type macros
#ifndef guard so we don't clash with the host
printf "#ifndef %s\n%s#endif\n\n", $name, $line;
}
}
elsif($line =~ /^(?!.*;)enum.*{/) #enum {
{
print $line;
next if($line =~ /.*};.*/);
do_enum($line)
}
elsif($line =~ /^(?!.*[;\(\)])enum.*/) #enum
{
#need to be careful might be a function returning enum
my $lastline = $line;
next if($line =~ /.*};.*/);
($line = <STDIN>);
if($line =~ /.*{.*/)
{
print $lastline;
print $line;
}
else { next; }
do_enum($line)
}
}
#Sort the functions
my @sorted_defines = sort { @$a{'name'} cmp @$b{'name'} } @captured_defines;
printf "int main(void)\n{\n";
printf "\tprintf(\"--[[Autogenerated rockbox constants]]\\n\\n\");";
# Print the C array
foreach my $define (@sorted_defines)
{
if(@$define{'value'} =~ /^0[xX][0-9a-fA-F]+$/) #hex number
{
printf "\tprintf(\"rb[\\\"%%s\\\"] = 0x%%x\\n\", stringify(%s), %s);\n", @$define{'name'}, @$define{'name'};
}
elsif(@$define{'value'} =~ /^[0-9]+$/) #number
{
printf "\tprintf(\"rb[\\\"%%s\\\"] = %%d\\n\", stringify(%s), %s);\n", @$define{'name'}, @$define{'name'};
}
else #might be a string but we don't know since the macro isn't expanded far enough
{
my $max_depth = 10;
my $var = @$define{'value'};
while($max_depth > 0) #follow the chain of #defines until we can see what type
{
$max_depth--;
$var = "\\\s*#define\\s+$var\\s+.*";
#warn $var;
if(my ($x) = grep($_ =~ /($var)/, @all_defines)) #check all the defines
{
#warn $x;
if($x =~ $def_regex)
{
$var = $2;
#warn $var;
last if ($var =~ $quot_regex);
last if ($var =~ $num_regex);
next
}
#warn "end ".$var;
last
}
else
{
$var = @$define{'value'};
last
}
}
if ($var =~$quot_regex) #has a quote it is a string
{
#guard with empty literals "" so gcc throws an error if it isn't a string
printf "\tprintf(\"rb[\\\"%%s\\\"] = \\\"%%s\\\"\\n\", stringify(%s), \"\" %s \"\");\n", @$define{'name'}, @$define{'name'};
}
elsif ($var =~$num_regex) #it must be a number
{
printf "\tprintf(\"rb[\\\"%%s\\\"] = %%d\\n\", stringify(%s), %s);\n", @$define{'name'}, @$define{'name'};
}
else { warn "Skipping ".@$define{'name'}." indeterminate macro type\n"; }
}
}
print <<EOF
return 0;
}
EOF
;
sub do_enum {
my ($line) = @_;
while($line = <STDIN>)
{
if($line =~ /.*};.*/)
{
print $line;
last
}
elsif($line =~ /([^\s,\t]+)\s*=?.*,?/)
{
$name = $1;
#printf "%s WHATTT?", $name;
$value = "0"; #enums are always integers
}
print $line;
if(grep($name =~ $_, @rockbox_defines))
{
push(@names_seen, $name);
push(@captured_defines, {'name' => $name, 'value' => $value});
}
}
}
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