flm01/openwrt/package/luci/libs/nixio/axTLS/bindings/generate_interface.pl

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#!/usr/bin/perl -w
#
# Copyright (c) 2007, Cameron Rich
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the axTLS project nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#===============================================================
# This application transforms ssl.h into interfaces that can be used by
# other language bindings. It is "SWIG"-like in nature in that various
# files are generated based on the axTLS API.
#
# The file produced is axInterface.? (depending on the file extension).
#
#===============================================================
use strict;
my $CSHARP = 0;
my $VBNET = 1;
my $binding;
my $skip = 0;
my $signature_ret_type;
# Transforms function signature into an Interface format
sub transformSignature
{
my $item;
my ($line) = @_;
foreach $item ($line)
{
# our very basic preprocessor
if ($binding == $CSHARP)
{
$line =~ s/STDCALL //;
$line =~ s/EXP_FUNC/ [DllImport ("axtls")]\n public static extern/;
$line =~ s/uint32_t/uint/g;
$line =~ s/uint8_t \*\*/ref IntPtr /g;
$line =~ s/const uint8_t \* /IntPtr /g;
$line =~ s/const uint8_t \*/byte[] /g; # note: subtle diff
$line =~ s/uint8_t \* ?/byte[] /g;
$line =~ s/uint8_t ?/byte /g;
$line =~ s/const char \* ?/string /g;
$line =~ s/const SSL_CTX \* ?/IntPtr /g;
$line =~ s/SSL_CTX \* ?/IntPtr /g;
$line =~ s/SSLObjLoader \* ?/IntPtr /g;
$line =~ s/const SSL \* ?/IntPtr /g;
$line =~ s/SSL \* ?/IntPtr /g;
$line =~ s/\(void\)/()/g;
}
elsif ($binding == $VBNET)
{
if ($line =~ /EXP_FUNC/)
{
# Procedure or function?
my $invariant = $line =~ /void /;
my $proc = $invariant ? "Sub" : "Function";
($signature_ret_type) = $line =~ /EXP_FUNC (.*) STDCALL/;
$line =~ s/EXP_FUNC .* STDCALL / <DllImport("axtls")> Public Shared $proc _\n /;
$signature_ret_type =~ s/const uint8_t \*/As IntPtr/;
$signature_ret_type =~ s/const char \*/As String/;
$signature_ret_type =~ s/SSL_CTX \*/As IntPtr/;
$signature_ret_type =~ s/SSLObjLoader \*/As IntPtr/;
$signature_ret_type =~ s/SSL \*/As IntPtr/;
$signature_ret_type =~ s/uint8_t/As Byte/;
$signature_ret_type =~ s/int/As Integer/;
$signature_ret_type =~ s/void//;
$signature_ret_type .= "\n End $proc\n\n";
}
$line =~ s/uint32_t (\w+)/ByVal $1 As Integer/g;
$line =~ s/int (\w+)/ByVal $1 As Integer/g;
$line =~ s/uint8_t \*\* ?(\w+)/ByRef $1 As IntPtr/g;
$line =~ s/const uint8_t \* ?(\w+)/ByVal $1() As Byte/g;
$line =~ s/uint8_t \* ?(\w+)/ByVal $1() As Byte/g;
$line =~ s/uint8_t ?(\w+)/ByVal $1 As Byte/g;
$line =~ s/const char \* ?(\w+)/ByVal $1 As String/g;
$line =~ s/const SSL_CTX \* ?(\w+)/ByVal $1 As IntPtr/g;
$line =~ s/SSL_CTX \* ?(\w+)/ByVal $1 As IntPtr/g;
$line =~ s/SSLObjLoader \* ?(\w+)/ByVal $1 As IntPtr/g;
$line =~ s/const SSL \* ?(\w+)/ByVal $1 As IntPtr/g;
$line =~ s/SSL \* ?(\w+)/ByVal $1 As IntPtr/g;
$line =~ s/void \* ?(\w+)/Byval $1 As IntPtr/g;
$line =~ s/\(void\)/()/g;
$line =~ s/void//g;
$line =~ s/;\n/ $signature_ret_type;/;
}
}
return $line;
}
# Parse input file
sub parseFile
{
my (@file) = @_;
my $line;
my $splitDefine = 0;
my $splitFunctionDeclaration;
my $vb_hack = " ";
my $vb_line_hack = 0;
$skip = 0;
foreach $line (@file)
{
next if $line =~ /sl_x509_create/; # ignore for now
# test for a #define
if (!$skip && $line =~ m/^#define/)
{
$splitDefine = 1 if $line =~ m/\\$/;
if ($binding == $VBNET)
{
$line =~ s/\|/Or/g;
$line =~ s/ 0x/ &H/;
}
my ($name, $value) = $line =~ /#define (\w+) +([^\\]*)[\\]?\n/;
if (defined $name && defined $value)
{
# C# constant translation
if ($binding == $CSHARP)
{
$line = " public const int $name = $value";
}
# VB.NET constant translation
elsif ($binding == $VBNET)
{
$line = " Public Const $name As Integer = $value";
}
}
next if $line =~ /#define/; # ignore any other defines
print DATA_OUT $line;
# check line is not split
next if $splitDefine == 1;
print DATA_OUT ";" if $binding == $CSHARP;
print DATA_OUT "\n";
}
# pick up second line of #define statement
if ($splitDefine)
{
if ($line !~ /\\$/)
{
$line =~ s/$/;/ if $binding == $CSHARP; # add the ";"
}
$line =~ s/ ?\| ?/ Or /g
if ($binding == $VBNET);
# check line is not split
$splitDefine = ($line =~ m/\\$/);
# ignore trailing "\"
$line =~ s/\\$// if $binding == $CSHARP;
$line =~ s/\\$/_/ if $binding == $VBNET;
print DATA_OUT $line;
next;
}
# test for function declaration
if (!$skip && $line =~ /EXP_FUNC/ && $line !~ /\/\*/)
{
$line = transformSignature($line);
$splitFunctionDeclaration = $line !~ /;/;
$line =~ s/;// if ($binding == $VBNET);
$line =~ s/\n$/ _\n/ if ($binding == $VBNET) &&
$splitFunctionDeclaration;
print DATA_OUT $line;
next;
}
if ($splitFunctionDeclaration)
{
$line = transformSignature($line);
$splitFunctionDeclaration = $line !~ /;/;
$line =~ s/;// if ($binding == $VBNET);
$line =~ s/\n/ _\n/ if ($binding == $VBNET) &&
$splitFunctionDeclaration == 1;
print DATA_OUT $line;
next;
}
}
}
#===============================================================
# Determine which module to build from command-line options
use strict;
use Getopt::Std;
my $binding_prefix;
my $binding_suffix;
my $data_file;
my @raw_data;
if (not defined $ARGV[0])
{
goto ouch;
}
if ($ARGV[0] eq "-csharp")
{
print "Generating C# interface file\n";
$binding_prefix = "csharp";
$binding_suffix = "cs";
$binding = $CSHARP;
}
elsif ($ARGV[0] eq "-vbnet")
{
print "Generating VB.NET interface file\n";
$binding_prefix = "vbnet";
$binding_suffix = "vb";
$binding = $VBNET;
}
else
{
ouch:
die "Usage: $0 [-csharp | -vbnet]\n";
}
my $interfaceFile = "$binding_prefix/axInterface.$binding_suffix";
# Input file required to generate interface file.
$data_file = "../ssl/ssl.h";
# Open input files
open(DATA_IN, $data_file) || die("Could not open file ($data_file)!");
@raw_data = <DATA_IN>;
# Open output file
if ($binding == $CSHARP || $binding == $VBNET)
{
open(DATA_OUT, ">$interfaceFile") || die("Cannot Open File");
}
# SPEC interface file header
if ($binding == $CSHARP)
{
# generate the C#/C interface file
print DATA_OUT << "END";
// The C# to C interface definition file for the axTLS project
// Do not modify - this file is generated
using System;
using System.Runtime.InteropServices;
namespace axTLS
{
public class axtls
{
END
}
elsif ($binding == $VBNET)
{
# generate the VB.NET/C interface file
print DATA_OUT << "END";
' The VB.NET to C interface definition file for the axTLS project
' Do not modify - this file is generated
Imports System
Imports System.Runtime.InteropServices
Namespace axTLSvb
Public Class axtls
END
}
parseFile(@raw_data);
# finish up
if ($binding == $CSHARP)
{
print DATA_OUT " };\n";
print DATA_OUT "};\n";
}
elsif ($binding == $VBNET)
{
print DATA_OUT " End Class\nEnd Namespace\n";
}
close(DATA_IN);
close(DATA_OUT);
#===============================================================