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// K-3D
// Copyright (c) 1995-2004, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// 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
/** \file
\brief Implements objects for wrapping C++ iostreams
\author Tim Shead (tshead@k-3d.com)
*/
#include <k3dsdk/result.h>
#include <boost/cstdint.hpp>
#include <fstream>
#include <iostream>
#include <vector>
#include <jsapi.h>
namespace
{
std::istream* istream_storage(JSContext* Context, JSObject* Object);
JSBool istream_constructor(JSContext* Context, JSObject* Object, uintN argc, jsval* argv, jsval* Result)
{
if(JSVAL_IS_STRING(argv[0]))
{
JS_SetPrivate(Context, Object, new std::ifstream(JS_GetStringBytes(JSVAL_TO_STRING(argv[0]))));
return JS_TRUE;
}
return JS_FALSE;
}
void istream_destructor(JSContext* Context, JSObject* Object)
{
delete istream_storage(Context, Object);
}
JSBool istream_eof(JSContext* Context, JSObject* Object, uintN argc, jsval* argv, jsval* Result)
{
*Result = BOOLEAN_TO_JSVAL(istream_storage(Context, Object)->eof());
return JS_TRUE;
}
JSBool istream_get(JSContext* Context, JSObject* Object, uintN argc, jsval* argv, jsval* Result)
{
char c = istream_storage(Context, Object)->get();
*Result = STRING_TO_JSVAL(JS_NewStringCopyN(Context, &c, 1));
return JS_TRUE;
}
JSBool istream_getline(JSContext* Context, JSObject* Object, uintN argc, jsval* argv, jsval* Result)
{
std::string line;
std::getline(*istream_storage(Context, Object), line);
*Result = STRING_TO_JSVAL(JS_NewStringCopyZ(Context, line.c_str()));
return JS_TRUE;
}
JSBool istream_read(JSContext* Context, JSObject* Object, uintN argc, jsval* argv, jsval* Result)
{
boost::int32_t count = 0;
jsint __count;
return_val_if_fail(JS_TRUE == JS_ValueToInt32(Context, argv[0], &__count), JS_FALSE);
return_val_if_fail(__count, JS_FALSE);
count = static_cast<boost::int32_t>(__count);
std::vector<char> buffer(count+1, '\0');
istream_storage(Context, Object)->read(&buffer[0], count);
*Result = STRING_TO_JSVAL(JS_NewStringCopyZ(Context, &buffer[0]));
return JS_TRUE;
}
JSClass istream_class =
{
"istream", JSCLASS_HAS_PRIVATE, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, istream_destructor
};
JSPropertySpec istream_properties[] =
{
{0}
};
JSFunctionSpec istream_methods[] =
{
{ "eof", istream_eof, 0, 0, 0 },
{ "get", istream_get, 0, 0, 0 },
{ "getline", istream_getline, 0, 0, 0 },
{ "read", istream_read, 1, 0, 0 },
{0}
};
std::istream* istream_storage(JSContext* Context, JSObject* Object)
{
return reinterpret_cast<std::istream*>(JS_GetInstancePrivate(Context, Object, &istream_class, 0));
}
// Forward declarations
std::ostream* ostream_storage(JSContext* Context, JSObject* Object);
JSBool ostream_constructor(JSContext* Context, JSObject* Object, uintN argc, jsval* argv, jsval* Result)
{
if(JSVAL_IS_STRING(argv[0]))
{
JS_SetPrivate(Context, Object, new std::ofstream(JS_GetStringBytes(JSVAL_TO_STRING(argv[0]))));
return JS_TRUE;
}
return JS_FALSE;
}
void ostream_destructor(JSContext* Context, JSObject* Object)
{
delete ostream_storage(Context, Object);
}
JSBool ostream_write(JSContext* Context, JSObject* Object, uintN argc, jsval* argv, jsval* Result)
{
const std::string output = JS_GetStringBytes(JS_ValueToString(Context, argv[0]));
ostream_storage(Context, Object)->write(output.c_str(), output.size());
return JS_TRUE;
}
JSBool ostream_flush(JSContext* Context, JSObject* Object, uintN argc, jsval* argv, jsval* Result)
{
ostream_storage(Context, Object)->flush();
return JS_TRUE;
}
JSClass ostream_class =
{
"ostream", JSCLASS_HAS_PRIVATE, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, ostream_destructor
};
JSPropertySpec ostream_properties[] =
{
{0}
};
JSFunctionSpec ostream_methods[] =
{
{ "write", ostream_write, 1, 0, 0 },
{ "flush", ostream_flush, 0, 0, 0 },
{0}
};
std::ostream* ostream_storage(JSContext* Context, JSObject* Object)
{
return reinterpret_cast<std::ostream*>(JS_GetInstancePrivate(Context, Object, &ostream_class, 0));
}
} // namespace
namespace libk3djavascript
{
void initialize_javascript_streams(JSContext* Context, JSObject* Object)
{
JS_InitClass(Context, Object, 0, &istream_class, istream_constructor, 1, istream_properties, istream_methods, 0, 0);
JS_InitClass(Context, Object, 0, &ostream_class, ostream_constructor, 1, ostream_properties, ostream_methods, 0, 0);
}
} // namespace libk3djavascript
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