Ykkrosh
53bcba3368
IGUIObject: Cache the JSObject*, to prevent some frequent allocation while running GUI scripts. JSInterface_IGUIObject: Fixed garbage collection issues. JSInterface_IGUIObject, ScriptGlue: Changed to the JS_THREADSAFE form of JS_GetClass. Util: Avoid startup warnings on Linux caused by using unimplemented cpu_* functions that aren't needed for anything important yet. sysdep/unix: Changed to native line endings. This was SVN commit r5154.
257 lines
6.7 KiB
C++
257 lines
6.7 KiB
C++
#include "precompiled.h"
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/*
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* wxJavaScript - distream.cpp
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*
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* Copyright (c) 2002-2007 Franky Braem and the wxJavaScript project
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*
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* Project Info: http://www.wxjavascript.net or http://wxjs.sourceforge.net
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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* $Id: distream.cpp 598 2007-03-07 20:13:28Z fbraem $
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*/
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#include <wx/wxprec.h>
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#ifndef WX_PRECOMP
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#include <wx/wx.h>
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#endif
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#include "../common/main.h"
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#include "stream.h"
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#include "istream.h"
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#include "distream.h"
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using namespace wxjs;
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using namespace wxjs::io;
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/***
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* <file>distream</file>
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* <module>io</module>
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* <class name="wxDataInputStream" version="0.8.3">
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* This class provides functions that read binary data types in a portable way.
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* Data can be read in either big-endian or little-endian format, little-endian being
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* the default on all architectures.
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* <br /><br />
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* If you want to read data from text files (or streams) use @wxTextInputStream instead.
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* <br /><br />
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* <b>Remark :</b>This class is not thoroughly tested. If you find problems let
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* it know on the <a href="http://sourceforge.net/forum/forum.php?forum_id=168145">project forum</a>.
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* </class>
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*/
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WXJS_INIT_CLASS(DataInputStream, "wxDataInputStream", 1)
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/***
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* <ctor>
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* <function>
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* <arg name="Input" type="@wxInputStream">An input stream</arg>
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* </function>
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* <desc>
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* Constructs a new wxDataInputStream object.
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* </desc>
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* </ctor>
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*/
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wxDataInputStream* DataInputStream::Construct(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, bool constructing)
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{
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Stream *in = InputStream::GetPrivate(cx, argv[0]);
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if ( in == NULL )
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return NULL;
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// This is needed, because otherwise the stream can be garbage collected.
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// Another method could be to root the stream, but how are we going to unroot it?
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JS_DefineProperty(cx, obj, "__stream__", argv[0], NULL, NULL, JSPROP_READONLY);
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return new wxDataInputStream(*dynamic_cast<wxInputStream *>(in->GetStream()));
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}
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WXJS_BEGIN_METHOD_MAP(DataInputStream)
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WXJS_METHOD("bigEndianOrdered", bigEndianOrdered, 1)
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WXJS_METHOD("read64", read64, 0)
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WXJS_METHOD("read32", read32, 0)
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WXJS_METHOD("read16", read16, 0)
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WXJS_METHOD("read8", read8, 0)
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WXJS_METHOD("readString", readString, 0)
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WXJS_END_METHOD_MAP()
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/***
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* <method name="bigEndianOrdered">
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* <function>
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* <arg name="Ordered" type="Boolean" />
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* </function>
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* <desc>
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* If <i>Ordered</i> is true, all data will be read in big-endian order,
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* such as written by programs on a big endian architecture (e.g. Sparc)
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* or written by Java-Streams (which always use big-endian order).
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* </desc>
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* </method>
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*/
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JSBool DataInputStream::bigEndianOrdered(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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wxDataInputStream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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bool ordered;
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if ( FromJS(cx, argv[0], ordered) )
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{
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p->BigEndianOrdered(ordered);
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return JS_TRUE;
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}
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return JS_FALSE;
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}
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/***
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* <method name="read64">
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* <function returns="Integer" />
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* <desc>
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* Reads a 64 bit integer from the stream.
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* </desc>
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* </method>
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*/
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JSBool DataInputStream::read64(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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wxDataInputStream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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wxUint64 value = p->Read64();
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// Check this for other platforms!
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#ifdef __WXMSW__
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*rval = ToJS(cx, (long) value);
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#else
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*rval = ToJS(cx, (int) value);
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#endif
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return JS_TRUE;
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}
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/***
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* <method name="read32">
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* <function returns="Integer" />
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* <desc>
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* Reads a 32 bit integer from the stream.
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* </desc>
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* </method>
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*/
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JSBool DataInputStream::read32(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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wxDataInputStream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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wxUint32 value = p->Read32();
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// Check this for other platforms!
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#ifdef __WXMSW__
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*rval = ToJS(cx, (int) value);
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#else
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*rval = ToJS(cx, (int) value);
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#endif
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return JS_TRUE;
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}
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/***
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* <method name="read16">
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* <function returns="Integer" />
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* <desc>
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* Reads a 16 bit integer from the stream.
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* </desc>
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* </method>
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*/
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JSBool DataInputStream::read16(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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wxDataInputStream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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wxUint16 value = p->Read16();
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// Check this for other platforms!
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#ifdef __WXMSW__
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*rval = ToJS(cx, (int) value);
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#else
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*rval = ToJS(cx, (int) value);
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#endif
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return JS_TRUE;
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}
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/***
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* <method name="read8">
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* <function returns="Integer" />
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* <desc>
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* Reads a 8 bit integer from the stream.
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* </desc>
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* </method>
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*/
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JSBool DataInputStream::read8(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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wxDataInputStream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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wxUint8 value = p->Read8();
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// Check this for other platforms!
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#ifdef __WXMSW__
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*rval = ToJS(cx, (int) value);
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#else
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*rval = ToJS(cx, (int) value);
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#endif
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return JS_TRUE;
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}
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/***
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* <method name="readDouble">
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* <function return="Double" />
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* <desc>
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* Reads a double (IEEE encoded) from a stream.
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* </desc>
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* </method>
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*/
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JSBool DataInputStream::readDouble(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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wxDataInputStream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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*rval = ToJS(cx, p->ReadDouble());
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return JS_TRUE;
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}
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/***
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* <method name="readString">
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* <function returns="String" />
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* <desc>
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* Reads a string from a stream. Actually, this function first reads a long integer
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* specifying the length of the string (without the last null character) and then reads the string.
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* </desc>
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* </method>
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*/
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JSBool DataInputStream::readString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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wxDataInputStream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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*rval = ToJS(cx, p->ReadString());
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return JS_TRUE;
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}
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