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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.
302 lines
8.5 KiB
C++
302 lines
8.5 KiB
C++
#include "precompiled.h"
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/*
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* wxJavaScript - istream.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: istream.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 "../ext/wxjs_ext.h"
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#include "stream.h"
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#include "ostream.h"
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#include "istream.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>istream</file>
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* <module>io</module>
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* <class name="wxInputStream" prototype="@wxStreamBase" version="0.8.2">
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* wxInputStream is a prototype for input streams. You can't construct it directly.
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* See @wxMemoryInputStream, @wxFileInputStream and @wxFFileInputStream.
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* </class>
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*/
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WXJS_INIT_CLASS(InputStream, "wxInputStream", 0)
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/***
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* <properties>
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* <property name="c" type="String">
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* Returns the first character in the input queue and removes it.
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* When set it puts back the character or full String in the input queue.
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* </property>
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* <property name="eof" type="Boolean" readonly="Y">
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* Returns true when end-of-file occurred.
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* </property>
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* <property name="lastRead" type="Integer" readonly="Y">
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* Returns the last number of bytes read.
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* </property>
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* <property name="peek" type="String" readonly="Y">
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* Returns the first character in the input queue without removing it.
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* </property>
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* </properties>
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*/
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WXJS_BEGIN_PROPERTY_MAP(InputStream)
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WXJS_PROPERTY(P_C, "c")
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WXJS_READONLY_PROPERTY(P_EOF, "eof")
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WXJS_READONLY_PROPERTY(P_LAST_READ, "lastRead")
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WXJS_READONLY_PROPERTY(P_PEEK, "peek")
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WXJS_READONLY_PROPERTY(P_TELL_I, "tellI")
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WXJS_END_PROPERTY_MAP()
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bool InputStream::GetProperty(Stream *p, JSContext *cx, JSObject *obj, int id, jsval *vp)
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{
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wxInputStream *stream = (wxInputStream*) p->GetStream();
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switch (id)
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{
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case P_C:
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*vp = ToJS(cx, wxString::FromAscii(stream->GetC()));
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break;
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case P_EOF:
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*vp = ToJS(cx, stream->Eof());
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break;
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case P_LAST_READ:
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*vp = ToJS(cx, (int) stream->LastRead());
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break;
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case P_PEEK:
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*vp = ToJS(cx, wxString::FromAscii(stream->Peek()));
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break;
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}
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return true;
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}
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bool InputStream::SetProperty(Stream *p, JSContext *cx, JSObject *obj, int id, jsval *vp)
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{
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if ( id == P_C )
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{
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wxInputStream *stream = (wxInputStream*) p->GetStream();
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wxString s;
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FromJS(cx, *vp, s);
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if ( s.length() > 0 )
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{
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stream->Ungetch(s, s.length());
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}
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}
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return true;
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}
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WXJS_BEGIN_METHOD_MAP(InputStream)
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WXJS_METHOD("getC", getC, 0)
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WXJS_METHOD("peek", peek, 0)
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WXJS_METHOD("read", read, 1)
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WXJS_METHOD("seekI", seekI, 1)
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WXJS_METHOD("ungetch", ungetch, 1)
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WXJS_END_METHOD_MAP()
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/***
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* <method name="getC">
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* <function returns="String" />
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* <desc>
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* Returns the next character from the input queue and removes it.
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* </desc>
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* </method>
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*/
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JSBool InputStream::getC(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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Stream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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wxInputStream *in = (wxInputStream *) p->GetStream();
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*rval = ToJS(cx, wxString::FromAscii(in->GetC()));
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return JS_TRUE;
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}
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/***
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* <method name="peek">
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* <function returns="String" />
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* <desc>
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* Returns the next character from the input queue without removing it.
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* </desc>
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* </method>
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*/
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JSBool InputStream::peek(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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Stream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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wxInputStream *in = (wxInputStream *) p->GetStream();
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*rval = ToJS(cx, wxString::FromAscii(in->Peek()));
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return JS_TRUE;
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}
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/***
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* <method name="read">
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* <function returns="wxInputStream">
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* <arg name="Buffer" type="@wxMemoryBuffer" />
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* </function>
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* <function returns="wxInputStream">
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* <arg name="Output" type="@wxOutputStream">
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* The outputstream that gets the data from the input queue.
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* </arg>
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* </function>
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* <desc>
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* Reads the specified number of bytes (the size of the buffer) and stores them in the buffer.
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* <br /><br />
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* Reads data from the input queue and stores it in the specified output stream.
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* The data is read until an error is raised by one of the two streams.
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* </desc>
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* </method>
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*/
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JSBool InputStream::read(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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Stream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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wxInputStream *in = (wxInputStream *) p->GetStream();
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if ( OutputStream::HasPrototype(cx, argv[0]) )
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{
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Stream *p_out = OutputStream::GetPrivate(cx, argv[0], false);
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wxOutputStream *out = (wxOutputStream *) p_out->GetStream();
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in->Read(*out);
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*rval = OBJECT_TO_JSVAL(obj);
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return JS_TRUE;
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}
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else
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{
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wxMemoryBuffer *buffer = wxjs::ext::GetMemoryBuffer(cx, JSVAL_TO_OBJECT(argv[0]));
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if ( buffer != NULL )
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{
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in->Read(buffer->GetData(), buffer->GetBufSize());
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buffer->SetDataLen(in->LastRead());
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*rval = OBJECT_TO_JSVAL(obj);
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return JS_TRUE;
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}
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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="seekI">
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* <function returns="Integer">
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* <arg name="Offset" type="Integer">
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* Offset to seek to
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* </arg>
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* <arg name="Mode" type="@wxFile#wxSeekMode" default="wxSeekMode.FromStart" />
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* </function>
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* <desc>
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* Seeks the offset. Returns the actual position or -1 on error.
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* </desc>
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* </method>
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*/
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JSBool InputStream::seekI(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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Stream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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wxInputStream *in = (wxInputStream *) p->GetStream();
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int offset;
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if ( ! FromJS(cx, argv[0], offset) )
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return JS_FALSE;
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int pos;
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if ( argc > 1 )
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{
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int mode;
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if ( FromJS(cx, argv[1], mode) )
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{
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pos = in->SeekI(offset, (wxSeekMode) mode);
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}
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else
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return JS_FALSE;
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}
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else
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pos = in->SeekI(offset);
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*rval = ToJS(cx, pos);
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return JS_TRUE;
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}
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/***
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* <method name="ungetch">
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* <function returns="Integer">
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* <arg name="Buffer" type="String" />
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* </function>
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* <function returns="Integer">
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* <arg name="Buffer" type="@wxMemoryBuffer" />
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* </function>
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* <desc>
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* This function is only useful in read mode. It is the manager of the "Write-Back" buffer.
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* This buffer acts like a temporary buffer where datas which has to be read during the next
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* read IO call are put. This is useful when you get a big block of data which you didn't want
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* to read: you can replace them at the top of the input queue by this way.
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* <br /><br />
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* Be very careful about this call in connection with calling @wxInputStream#seekI on the
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* same stream. Any call to @wxInputStream#seekI will invalidate any previous call to this
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* method (otherwise you could @wxInputStream#seekI to one position, "unread" a few bytes
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* there, @wxInputStream#seekI to another position and data would be either lost or corrupted).
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* </desc>
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* </method>
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*/
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JSBool InputStream::ungetch(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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Stream *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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wxInputStream *in = (wxInputStream *) p->GetStream();
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if ( JSVAL_IS_OBJECT(argv[0]) )
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{
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wxMemoryBuffer* buffer = wxjs::ext::GetMemoryBuffer(cx, JSVAL_TO_OBJECT(argv[0]));
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if ( buffer != NULL )
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{
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*rval = ToJS(cx, (int) in->Ungetch(buffer->GetData(), buffer->GetDataLen()));
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return JS_TRUE;
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}
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}
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wxString s;
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FromJS(cx, argv[0], s);
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if ( s.length() > 0 )
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{
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*rval = ToJS(cx, (int) in->Ungetch(s, s.length()));
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}
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else
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*rval = ToJS(cx, 0);
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return JS_TRUE;
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}
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