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Diffstat (limited to 'pdb/pdbgen.pl')
| -rwxr-xr-x | pdb/pdbgen.pl | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/pdb/pdbgen.pl b/pdb/pdbgen.pl new file mode 100755 index 0000000..30288d4 --- /dev/null +++ b/pdb/pdbgen.pl @@ -0,0 +1,240 @@ +#!/usr/bin/perl -w + +# GIMP - The GNU Image Manipulation Program +# Copyright (C) 1998-2003 Manish Singh <yosh@gimp.org> + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <https://www.gnu.org/licenses/>. + +require 5.004; + +BEGIN { + $srcdir = $ENV{srcdir} || '.'; + $destdir = $ENV{destdir} || '.'; + $builddir = $ENV{builddir} || '.'; +} + +use lib $srcdir; + +BEGIN { + # Some important stuff + require 'pdb.pl'; + require 'enums.pl'; + require 'util.pl'; + + # What to do? + require 'groups.pl'; + + if ($ENV{PDBGEN_GROUPS}) { + @groups = split(/:/, $ENV{PDBGEN_GROUPS}); + } +} + +# Stifle "used only once" warnings +$destdir = $destdir; +$builddir = $builddir; +%pdb = (); + +# The actual parser (in a string so we can eval it in another namespace) +$evalcode = <<'CODE'; +{ + my $file = $main::file; + my $srcdir = $main::srcdir; + + my $copyvars = sub { + my $dest = shift; + + foreach (@_) { + if (eval "defined scalar $_") { + (my $var = $_) =~ s/^(\W)//; + for ($1) { + /\$/ && do { $$dest->{$var} = $$var ; last; }; + /\@/ && do { $$dest->{$var} = [ @$var ]; last; }; + /\%/ && do { $$dest->{$var} = { %$var }; last; }; + } + } + } + }; + + # Variables to evaluate and insert into the PDB structure + my @procvars = qw($name $group $blurb $help $author $copyright $date $since + $deprecated @inargs @outargs %invoke $canonical_name); + + # These are attached to the group structure + my @groupvars = qw($desc $doc_title $doc_short_desc $doc_long_desc + @headers %extra); + + # Hook some variables into the top-level namespace + *pdb = \%main::pdb; + *gen = \%main::gen; + *grp = \%main::grp; + + # Hide our globals + my $safeeval = sub { local(%pdb, %gen, %grp); eval $_[0]; die $@ if $@ }; + + # Some standard shortcuts used by all def files + &$safeeval("do '$main::srcdir/stddefs.pdb'"); + + # Group properties + foreach (@groupvars) { eval "undef $_" } + + # Load the file in and get the group info + &$safeeval("require '$main::srcdir/groups/$file.pdb'"); + + # Save these for later + &$copyvars(\$grp{$file}, @groupvars); + + foreach $proc (@procs) { + # Reset all our PDB vars so previous defs don't interfere + foreach (@procvars) { eval "undef $_" } + + # Get the info + &$safeeval("&$proc"); + + # Some derived fields + $name = $proc; + $group = $file; + + ($canonical_name = $name) =~ s/_/-/g; + + # Load the info into %pdb, making copies of the data instead of refs + my $entry = {}; + &$copyvars(\$entry, @procvars); + $pdb{$proc} = $entry; + } + + # Find out what to do with these entries + while (my ($dest, $procs) = each %exports) { push @{$gen{$dest}}, @$procs } +} +CODE + +# Slurp in the PDB defs +foreach $file (@groups) { + print "Processing $srcdir/groups/$file.pdb...\n"; + eval "package Gimp::CodeGen::Safe::$file; $evalcode;"; + die $@ if $@; +} + +# Squash whitespace into just single spaces between words. +# Single new lines are considered as normal spaces, but n > 1 newlines are considered (n - 1) newlines. +# The slightly complicated suite of regexp is so that \n\s+\n is still considered a double newline. +sub trimspace { for (${$_[0]}) { s/(\S)[\ \t\r\f]*\n[\ \t\r\f]*(\S)/$1 $2/g; s/[\ \t\r\f]+/ /gs; + s/\n(([\ \t\r\f]*\n)+)/$1/g; s/[\ \t\r\f]*\n[\ \t\r\f]/\n/g ; s/^\s+//; s/\s+$//; } } + +# Trim spaces and escape quotes C-style +sub nicetext { + my $val = shift; + if (defined $$val) { + &trimspace($val); + $$val =~ s/"/\\"/g; + } +} + +# Do the same for all the strings in the args, plus expand constraint text +sub niceargs { + my $args = shift; + foreach $arg (@$args) { + foreach (keys %$arg) { + &nicetext(\$arg->{$_}); + } + } +} + +# Trim spaces from all the elements in a list +sub nicelist { + my $list = shift; + foreach (@$list) { &trimspace(\$_) } +} + +# Add args for array lengths + +sub arrayexpand { + my $args = shift; + my $newargs; + + foreach (@$$args) { + if (exists $_->{array}) { + my $arg = $_->{array}; + + $arg->{name} = 'num_' . $_->{name} unless exists $arg->{name}; + + # We can't have negative lengths, but let them set a min number + unless (exists $arg->{type}) { + $arg->{type} = '0 <= int32'; + } + elsif ($arg->{type} !~ /^\s*\d+\s*</) { + $arg->{type} = '0 <= ' . $arg->{type}; + } + + $arg->{void_ret} = 1 if exists $_->{void_ret}; + + $arg->{num} = 1; + + push @$newargs, $arg; + } + + push @$newargs, $_; + } + + $$args = $newargs; +} + +sub canonicalargs { + my $args = shift; + foreach $arg (@$args) { + ($arg->{canonical_name} = $arg->{name}) =~ s/_/-/g; + } +} + +# Post-process each pdb entry +while ((undef, $entry) = each %pdb) { + &nicetext(\$entry->{blurb}); + &nicetext(\$entry->{help}); + &nicetext(\$entry->{author}); + &nicetext(\$entry->{copyright}); + &nicetext(\$entry->{date}); + + foreach (qw(in out)) { + my $args = $_ . 'args'; + if (exists $entry->{$args}) { + &arrayexpand(\$entry->{$args}); + &niceargs($entry->{$args}); + &canonicalargs($entry->{$args}); + } + } + + &nicelist($entry->{invoke}{headers}) if exists $entry->{invoke}{headers}; + &nicelist($entry->{globals}) if exists $entry->{globals}; + + $entry->{invoke}{success} = 'TRUE' unless exists $entry->{invoke}{success}; +} + +# Generate code from the modules +my $didstuff; +while (@ARGV) { + my $type = shift @ARGV; + + print "\nProcessing $type...\n"; + + if (exists $gen{$type}) { + require "$type.pl"; + &{"Gimp::CodeGen::${type}::generate"}($gen{$type}); + print "done.\n"; + $didstuff = 1; + } + else { + print "nothing to do.\n"; + } +} + +print "\nNothing done at all.\n" unless $didstuff; |