summaryrefslogtreecommitdiffstats
path: root/kjsembed/builtins/textstream_imp.cpp
blob: 6be24dd95a2251104f73c509b499357ef0c73843 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/*
 *  Copyright (C) 2003, Richard J. Moore <rich@kde.org>
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 */

#include <qtextstream.h>
#include <qiodevice.h>

#include <kjsembed/global.h>
#include <kjsembed/jsbinding.h>
#include "jsopaqueproxy.h"
#include "textstream_imp.h"

namespace KJSEmbed {
namespace BuiltIns {

TextStreamImp::TextStreamImp( KJS::ExecState *exec, int mid, QTextStream *textstream )
    : JSProxyImp(exec), id(mid), ts(textstream)
{
}

TextStreamImp::~TextStreamImp()
{
}

void TextStreamImp::addBindings( KJS::ExecState *exec, KJS::Object &parent )
{
    kdDebug() << "TextStreamImp::addBindings()" << endl;

    JSOpaqueProxy *op = JSProxy::toOpaqueProxy( parent.imp() );
    if ( !op ) {
	kdWarning() << "TextStreamImp::addBindings() failed, not a JSOpaqueProxy" << endl;
	return;
    }

    QTextStream *ts = op->toTextStream();
    if ( !ts ) {
	kdWarning() << "TextStreamImp::addBindings() failed, type is " << op->typeName() << endl;
	return;
    }

    JSProxy::MethodTable methods[] = { 
	{ MethodIsReadable, "isReadable" },
	{ MethodIsWritable, "isWritable" },
	{ MethodPrint, "print" },
	{ MethodPrintLn, "println" },
	{ MethodReadLine, "readLine" },
	{ MethodFlush, "flush" },
	{ 0, 0 }
    };

    int idx = 0;
    do {
	TextStreamImp *tsi = new TextStreamImp( exec, idx, ts );
	parent.put( exec , methods[idx].name, KJS::Object(tsi) );
	++idx;
    } while( methods[idx].id );
}

KJS::Value TextStreamImp::call( KJS::ExecState *exec, KJS::Object &/*self*/, const KJS::List &args )
{
    QString not_readable = i18n( "Attempt to read from a write-only text stream." );
    QString not_writable = i18n( "Attempt to write to a read-only text stream." );

		QString arg0 = extractQString(exec, args, 0);

    QIODevice *dev = ts->device();
    KJS::Object err;

    switch ( id ) {
	case MethodIsReadable:
	    return KJS::Boolean( dev->isReadable() );
	    break;
	case MethodIsWritable:
	    return KJS::Boolean( dev->isWritable() );
	    break;
	case MethodPrint:
	    if ( !dev->isWritable() ) {
          return throwError(exec, not_writable.utf8());
	    }
	    (*ts) << arg0; 
	    break;
	case MethodPrintLn:
	    if ( !dev->isWritable() ) {
          return throwError(exec, not_writable.utf8());
	    }
	    (*ts) << arg0 << endl;
	    break;
	case MethodReadLine:
	    if ( dev->isReadable() ) {
		QString line = ts->readLine();
		if ( line.isNull() )
		    return KJS::Null();
		else
		    return KJS::String( line );
	    }
	    else {
          return throwError(exec, not_readable.utf8());
	    }
	    break;
	case MethodFlush:
	    if ( !dev->isWritable() ) {
          return throwError(exec, not_writable.utf8());
	    }
	    (*ts) << flush; 
	    break;
	default:
	    kdWarning() << "TextStreamImp has no method " << id << endl;
	    break;
    }

    return KJS::Value();
}

} // namespace KJSEmbed::BuiltIns
} // namespace KJSEmbed

// Local Variables:
// c-basic-offset: 4
// End: