gimp/tools/pdbgen/lib.pl

641 lines
16 KiB
Perl

# The GIMP -- an image manipulation program
# Copyright (C) 1998-2000 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
package Gimp::CodeGen::lib;
# Generates all the libgimp C wrappers (used by plugins)
$destdir = "$main::destdir/libgimp";
*arg_types = \%Gimp::CodeGen::pdb::arg_types;
*arg_parse = \&Gimp::CodeGen::pdb::arg_parse;
*enums = \%Gimp::CodeGen::enums::enums;
*write_file = \&Gimp::CodeGen::util::write_file;
*FILE_EXT = \$Gimp::CodeGen::util::FILE_EXT;
use Text::Wrap qw(wrap);
sub desc_wrap {
my ($str) = @_;
my $leading = ' * ';
$str =~ s/&/&amp\;/g;
$str =~ s/\</&lt\;/g;
$str =~ s/\>/&gt\;/g;
$Text::Wrap::columns = 72;
wrap($leading, $leading, $str);
}
sub desc_clean {
my ($str) = @_;
$str =~ s/\(\s*%%desc%%\s*\)//g;
$str =~ s/:\s*%%desc%%//g;
$str =~ s/\{\s*%%desc%%\s*\}//g;
$str =~ s/\s*$//g;
$str =~ s/:$//g;
$str;
}
sub generate {
my @procs = @{(shift)};
my %out;
sub libtype {
my $arg = shift;
my ($type, $name) = &arg_parse($arg->{type});
my $argtype = $arg_types{$type};
if (exists $argtype->{id_func} || $arg->{type} =~ /guide/) {
return 'gint32 ';
}
if ($type eq 'enum') {
$name = "Gimp$name" if $name !~ /^Gimp/;
return "$name ";
}
my $rettype = $argtype->{type};
$rettype =~ s/int32/int/ unless exists $arg->{keep_size};
$rettype .= '*' if exists $argtype->{struct};
return $rettype;
}
foreach $name (@procs) {
my $proc = $main::pdb{$name};
my $out = \%{$out{$proc->{group}}};
my @inargs = @{$proc->{inargs}} if exists $proc->{inargs};
my @outargs = @{$proc->{outargs}} if exists $proc->{outargs};
my $funcname = "gimp_$name"; my $wrapped = ""; my %usednames;
my $retdesc = "";
# Find the return argument (defaults to the first arg if not
# explicity set
my $retarg = undef; $retvoid = 0;
foreach (@outargs) { $retarg = $_, last if exists $_->{retval} }
unless ($retarg) {
if (scalar @outargs) {
if (exists $outargs[0]->{void_ret}) {
$retvoid = 1;
}
else {
$retarg = exists $outargs[0]->{num} ? $outargs[1]
: $outargs[0];
}
}
}
my $rettype;
if ($retarg) {
$rettype = &libtype($retarg);
chop $rettype unless $rettype =~ /\*$/;
$retarg->{retval} = 1;
$retdesc = &desc_clean ($retarg->{desc});
}
else {
# No return values
$rettype = 'void';
}
# The parameters to the function
my $arglist = ""; my $argpass = ""; my $privatevars = 0;
my $argdesc = "";
foreach (@inargs) {
my ($type) = &arg_parse($_->{type});
my $desc = &desc_clean($_->{desc});
my $arg = $arg_types{$type};
my $id = exists $arg->{id_func} || $_->{type} =~ /guide/;
$wrapped = "_" if exists $_->{wrap};
$usednames{$_->{name}}++;
if (exists $_->{implicit_fill}) {
$privatevars++;
}
else {
$arglist .= &libtype($_);
$arglist .= $_->{name};
$arglist .= '_ID' if $id;
$arglist .= ', ';
$argdesc .= " * \@$_->{name}";
$argdesc .= '_ID' if $id;
$argdesc .= ": $desc";
}
# This is what's passed into gimp_run_procedure
$argpass .= "\n\t\t\t\t" . ' ' x 4;
$argpass .= "GIMP_PDB_$arg->{name}, ";
if (exists $_->{implicit_fill}) {
$argpass .= $_->{implicit_fill};
}
else {
$argpass .= "$_->{name}";
$argpass .= '_ID' if $id;
}
$argpass .= ',';
unless ($argdesc =~ /[\.\!\?]$/) { $argdesc .= '.' }
$argdesc .= "\n";
}
# This marshals the return value(s)
my $return_args = "";
my $return_marshal = "gimp_destroy_params (return_vals, nreturn_vals);";
# return success/failure boolean if we don't have anything else
if ($rettype eq 'void') {
$return_args .= "\n" . ' ' x 2 . "gboolean success = TRUE;";
$retdesc = "TRUE on success.";
}
# We only need to bother with this if we have to return a value
if ($rettype ne 'void' || $retvoid) {
my $once = 0;
my $firstvar;
my @initnums;
foreach (@outargs) {
my ($type) = &arg_parse($_->{type});
my $arg = $arg_types{$type};
my $id = $arg->{id_ret_func} || $_->{type} =~ /guide/;
my $var;
$return_marshal = "" unless $once++;
$wrapped = "_" if exists $_->{wrap};
$_->{libname} = exists $usednames{$_->{name}} ? "ret_$_->{name}"
: $_->{name};
if (exists $_->{num}) {
if (!exists $_->{no_lib}) {
push @initnums, $_;
}
}
elsif (exists $_->{retval}) {
$return_args .= "\n" . ' ' x 2;
$return_args .= &libtype($_);
# The return value variable
$var = $_->{libname};
$var .= '_ID' if $id;
$return_args .= $var;
# Save the first var to "return" it
$firstvar = $var unless defined $firstvar;
if (exists $_->{libdef}) {
$return_args .= " = $_->{libdef}";
}
elsif ($id) {
# Initialize all IDs to -1
$return_args .= " = -1";
}
elsif ($arg->{type} =~ /\*/) {
# Initialize pointers to NULL
$return_args .= " = NULL";
}
elsif ($arg->{type} =~ /boolean/) {
$return_args .= " = FALSE";
}
else {
# Default to 0
$return_args .= " = 0";
}
$return_args .= ";";
if (exists $_->{array} && exists $_->{array}->{no_lib}) {
$return_args .= "\n" . ' ' x 2 . "gint num_$var;";
}
}
elsif ($retvoid) {
push @initnums, $_ unless exists $arg->{struct};
}
}
if (scalar(@initnums)) {
foreach (@initnums) {
$return_marshal .= "\*$_->{libname} = ";
my ($type) = &arg_parse($_->{type});
for ($arg_types{$type}->{type}) {
/\*$/ && do { $return_marshal .= "NULL"; last };
/boolean/ && do { $return_marshal .= "FALSE"; last };
/double/ && do { $return_marshal .= "0.0"; last };
$return_marshal .= "0";
}
$return_marshal .= ";\n ";
}
$return_marshal =~ s/\n $/\n\n /s;
}
if ($rettype eq 'void') {
$return_marshal .= <<CODE;
success = return_vals[0].data.d_status == GIMP_PDB_SUCCESS;
if (success)
CODE
}
else {
$return_marshal .= <<CODE;
if (return_vals[0].data.d_status == GIMP_PDB_SUCCESS)
CODE
}
$return_marshal .= ' ' x 4 . "{\n" if $#outargs;
my $argc = 1; my ($numpos, $numtype);
foreach (@outargs) {
my ($type) = &arg_parse($_->{type});
my $desc = &desc_clean($_->{desc});
my $arg = $arg_types{$type};
my $id = $arg->{id_ret_func} || $_->{type} =~ /guide/;
my $var;
my $ch = ""; my $cf = "";
if ($type =~ /^string(array)?/) {
$ch = 'g_strdup (';
$cf = ')';
}
elsif ($type =~ /parasite/) {
$ch = 'gimp_parasite_copy (&';
$cf = ')';
}
elsif ($type =~ /boolean|enum|guide/) {
$type = 'int32';
}
if (exists $_->{num}) {
$numpos = $argc;
$numtype = $type;
if (!exists $_->{no_lib}) {
$arglist .= "gint \*$_->{libname}, ";
$argdesc .= " * \@$_->{libname}: $desc";
}
}
elsif (exists $_->{array}) {
my $datatype = $arg->{type};
chop $datatype;
$datatype =~ s/ *$//;
my $var = $_->{libname}; my $dh = ""; my $df = "";
unless (exists $_->{retval}) {
$var = "*$var"; $dh = "(*"; $df = ")";
if ($type eq 'stringarray') {
$arglist .= "$datatype**$_->{libname}";
}
else {
$arglist .= "$datatype **$_->{libname}";
}
$argdesc .= " * \@$_->{libname}: $desc";
}
if ($ch || $cf) {
$return_args .= "\n" . ' ' x 2 . "gint i;";
}
my $numvar = '*' . $_->{array}->{name};
$numvar = "num_$_->{name}" if exists $_->{array}->{no_lib};
$return_marshal .= <<NEW . (($ch || $cf) ? <<CP1 : <<CP2);
$numvar = return_vals[$numpos].data.d_$numtype;
$var = g_new ($datatype, $numvar);
NEW
for (i = 0; i < $numvar; i++)
$dh$_->{name}$df\[i] = ${ch}return_vals[$argc].data.d_$type\[i]${cf};
CP1
memcpy ($var, return_vals[$argc].data.d_$type,
$numvar * sizeof ($datatype));
CP2
$out->{headers} = "#include <string.h>\n" unless ($ch || $cf);
}
else {
# The return value variable
$var = "";
unless (exists $_->{retval}) {
$var .= '*';
$arglist .= &libtype($_);
$arglist .= '*' unless exists $arg->{struct};
$arglist .= "$_->{libname}";
$arglist .= '_ID' if $id;
$arglist .= ', ';
$argdesc .= " * \@$_->{libname}";
$argdesc .= '_ID' if $id;
$argdesc .= ": $desc";
}
$var = exists $_->{retval} ? "" : '*';
$var .= $_->{libname};
$var .= '_ID' if $id;
$return_marshal .= ' ' x 2 if $#outargs;
$return_marshal .= <<CODE
$var = ${ch}return_vals[$argc].data.d_$type${cf};
CODE
}
if ($argdesc) {
unless ($argdesc =~ /[\.\!\?]$/) { $argdesc .= '.' }
unless ($argdesc =~ /\n$/) { $argdesc .= "\n" }
}
$argc++;
}
$return_marshal .= ' ' x 4 . "}\n" if $#outargs;
$return_marshal .= <<'CODE';
gimp_destroy_params (return_vals, nreturn_vals);
CODE
unless ($retvoid) {
$return_marshal .= ' ' x 2 . "return $firstvar;";
}
else {
$return_marshal .= ' ' x 2 . "return success;";
}
}
else {
$return_marshal = <<CODE;
success = return_vals[0].data.d_status == GIMP_PDB_SUCCESS;
$return_marshal
return success;
CODE
chop $return_marshal;
}
if ($arglist) {
my @arglist = split(/, /, $arglist);
my $longest = 0; my $seen = 0;
foreach (@arglist) {
/(\w+) \S+/;
my $len = length($1);
my $num = scalar @{[ /\*/g ]};
$seen = $num if $seen < $num;
$longest = $len if $longest < $len;
}
$longest += $seen;
my $once = 0; $arglist = "";
foreach (@arglist) {
my $len = $longest - index($_, ' ') + 1;
$len -= scalar @{[ /\*/g ]};
s/ /' ' x $len/e if $len > 1;
$arglist .= "\t" if $once;
$arglist .= $_;
$arglist .= ",\n";
$once++;
}
$arglist =~ s/,\n$//;
}
else {
$arglist = "void";
}
$rettype = 'gboolean' if $rettype eq 'void';
# Our function prototype for the headers
(my $hrettype = $rettype) =~ s/ //g;
my $proto = "$hrettype $wrapped$funcname ($arglist);\n";
$proto =~ s/ +/ /g;
push @{$out->{protos}}, $proto;
my $clist = $arglist;
my $padlen = length($wrapped) + length($funcname) + 2;
my $padtab = $padlen / 8; my $padspace = $padlen % 8;
my $padding = "\t" x $padtab . ' ' x $padspace;
$clist =~ s/\t/$padding/eg;
unless ($retdesc =~ /[\.\!\?]$/) { $retdesc .= '.' }
$out->{code} .= <<CODE;
/**
* $wrapped$funcname:
$argdesc *
@{[ &desc_wrap($proc->{blurb}) ]}
*
@{[ &desc_wrap($proc->{help}) ]}
*
* Returns: $retdesc
*/
$rettype
$wrapped$funcname ($clist)
{
GimpParam *return_vals;
gint nreturn_vals;$return_args
return_vals = gimp_run_procedure ("$funcname",
\&nreturn_vals,$argpass
GIMP_PDB_END);
$return_marshal
}
CODE
}
my $lgpl_top = <<'LGPL';
/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-2000 Peter Mattis and Spencer Kimball
*
LGPL
my $lgpl_bottom = <<'LGPL';
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* NOTE: This file is autogenerated by pdbgen.pl */
LGPL
# We generate two files, a _pdb.h file with prototypes for all
# the functions we make, and a _pdb.c file for the actual implementation
while (my($group, $out) = each %out) {
my $hname = "gimp${group}pdb.h";
my $cname = "gimp${group}pdb.c";
$hname =~ s/_//g; $hname =~ s/pdb\./_pdb./;
$cname =~ s/_//g; $cname =~ s/pdb\./_pdb./;
my $hfile = "$destdir/$hname$FILE_EXT";
my $cfile = "$destdir/$cname$FILE_EXT";
my $extra = {};
if (exists $main::grp{$group}->{extra}->{lib}) {
$extra = $main::grp{$group}->{extra}->{lib}
}
if (exists $extra->{protos}) {
my $proto = "";
foreach (split(/\n/, $extra->{protos})) {
next if /^\s*$/;
if (/^\t/ && length($proto)) {
s/\s+/ /g; s/ $//; s/^ /\t/;
$proto .= $_ . "\n";
}
else {
push @{$out->{protos}}, $proto if length($proto);
s/\s+/ /g; s/^ //; s/ $//;
$proto = $_ . "\n";
}
}
}
my @longest = (0, 0, 0); my @arglist = (); my $seen = 0;
foreach (@{$out->{protos}}) {
my $len; my $arglist = [ split(' ', $_, 3) ];
for (0..1) {
$len = length($arglist->[$_]);
$longest[$_] = $len if $longest[$_] < $len;
}
foreach (split(/,/, $arglist->[2])) {
next if !/(\w+) \S+/;
$len = length($1) + 1;
my $num = scalar @{[ /\*/g ]};
$seen = $num if $seen < $num;
$longest[2] = $len if $longest[2] < $len;
}
push @arglist, $arglist;
}
$longest[2] += $seen;
@{$out->{protos}} = ();
foreach (@arglist) {
my ($type, $func, $arglist) = @$_;
my @args = split(/,/, $arglist); $arglist = "";
foreach (@args) {
my $len = $longest[2] - index($_, ' ') + 1;
$len -= scalar @{[ /\*/g ]};
$len++ if /\t/;
s/ /' ' x $len/e if $len > 1;
$arglist .= $_;
$arglist .= "," if !/;\n$/;
}
my $arg = $type;
$arg .= ' ' x ($longest[0] - length($type) + 1) . $func;
$arg .= ' ' x ($longest[1] - length($func) + 1) . $arglist;
$arg =~ s/\t/' ' x ($longest[0] + $longest[1] + 3)/eg;
while ($arg =~ /^\t* {8}/m) { $arg =~ s/^(\t*) {8}/$1\t/mg }
push @{$out->{protos}}, $arg;
}
my $body;
$body = $extra->{decls} if exists $extra->{decls};
foreach (@{$out->{protos}}) { $body .= $_ }
chomp $body;
open HFILE, "> $hfile" or die "Can't open $hfile: $!\n";
print HFILE $lgpl_top;
print HFILE " * $hname\n";
print HFILE $lgpl_bottom;
my $guard = "__GIMP_\U$group\E_PDB_H__";
print HFILE <<HEADER;
#ifndef $guard
#define $guard
G_BEGIN_DECLS
/* For information look into the C source or the html documentation */
$body
G_END_DECLS
#endif /* $guard */
HEADER
close HFILE;
&write_file($hfile);
open CFILE, "> $cfile" or die "Can't open $cfile: $!\n";
print CFILE $lgpl_top;
print CFILE " * $cname\n";
print CFILE $lgpl_bottom;
print CFILE qq/#include "config.h"\n\n/;
print CFILE $out->{headers}, "\n" if exists $out->{headers};
print CFILE qq/#include "gimp.h"\n/;
print CFILE qq/#include "gimpprivate.h"\n/ if $privatevars;
print CFILE "\n", $extra->{code} if exists $extra->{code};
print CFILE $out->{code};
close CFILE;
&write_file($cfile);
}
if (! $ENV{PDBGEN_GROUPS}) {
my $gimp_pdb = "$destdir/gimp_pdb.h$FILE_EXT";
open PFILE, "> $gimp_pdb" or die "Can't open $gimp_pdb: $!\n";
print PFILE $lgpl_top;
print PFILE " * gimp_pdb.h\n";
print PFILE $lgpl_bottom;
my $guard = "__GIMP_PDB_H__";
print PFILE <<HEADER;
#ifndef $guard
#define $guard
HEADER
my @groups;
foreach $group (keys %out) {
my $hname = "gimp${group}pdb.h";
$hname =~ s/_//g; $hname =~ s/pdb\./_pdb./;
push @groups, $hname;
}
foreach $group (sort @groups) {
print PFILE "#include <libgimp/$group>\n";
}
print PFILE <<HEADER;
#endif /* $guard */
HEADER
close PFILE;
&write_file($gimp_pdb);
}
}