rdf/base/src/nsRDFXMLParser.cpp

branch
TOR_BUG_9701
changeset 15
b8a032363ba2
equal deleted inserted replaced
-1:000000000000 0:cee0864e6e35
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7 #include "nsRDFXMLParser.h"
8
9 #include "nsIComponentManager.h"
10 #include "nsIParser.h"
11 #include "nsCharsetSource.h"
12 #include "nsIRDFContentSink.h"
13 #include "nsParserCIID.h"
14 #include "nsStringStream.h"
15 #include "nsNetUtil.h"
16
17 static NS_DEFINE_CID(kParserCID, NS_PARSER_CID);
18
19 NS_IMPL_ISUPPORTS(nsRDFXMLParser, nsIRDFXMLParser)
20
21 nsresult
22 nsRDFXMLParser::Create(nsISupports* aOuter, REFNSIID aIID, void** aResult)
23 {
24 if (aOuter)
25 return NS_ERROR_NO_AGGREGATION;
26
27 nsRDFXMLParser* result = new nsRDFXMLParser();
28 if (! result)
29 return NS_ERROR_OUT_OF_MEMORY;
30
31 nsresult rv;
32 NS_ADDREF(result);
33 rv = result->QueryInterface(aIID, aResult);
34 NS_RELEASE(result);
35 return rv;
36 }
37
38 nsRDFXMLParser::nsRDFXMLParser()
39 {
40 MOZ_COUNT_CTOR(nsRDFXMLParser);
41 }
42
43 nsRDFXMLParser::~nsRDFXMLParser()
44 {
45 MOZ_COUNT_DTOR(nsRDFXMLParser);
46 }
47
48 NS_IMETHODIMP
49 nsRDFXMLParser::ParseAsync(nsIRDFDataSource* aSink, nsIURI* aBaseURI, nsIStreamListener** aResult)
50 {
51 nsresult rv;
52
53 nsCOMPtr<nsIRDFContentSink> sink =
54 do_CreateInstance("@mozilla.org/rdf/content-sink;1", &rv);
55
56 if (NS_FAILED(rv)) return rv;
57
58 rv = sink->Init(aBaseURI);
59 if (NS_FAILED(rv)) return rv;
60
61 // We set the content sink's data source directly to our in-memory
62 // store. This allows the initial content to be generated "directly".
63 rv = sink->SetDataSource(aSink);
64 if (NS_FAILED(rv)) return rv;
65
66 nsCOMPtr<nsIParser> parser = do_CreateInstance(kParserCID, &rv);
67 if (NS_FAILED(rv)) return rv;
68
69 parser->SetDocumentCharset(NS_LITERAL_CSTRING("UTF-8"),
70 kCharsetFromDocTypeDefault);
71 parser->SetContentSink(sink);
72
73 rv = parser->Parse(aBaseURI);
74 if (NS_FAILED(rv)) return rv;
75
76 return CallQueryInterface(parser, aResult);
77 }
78
79 NS_IMETHODIMP
80 nsRDFXMLParser::ParseString(nsIRDFDataSource* aSink, nsIURI* aBaseURI, const nsACString& aString)
81 {
82 nsresult rv;
83
84 nsCOMPtr<nsIRDFContentSink> sink =
85 do_CreateInstance("@mozilla.org/rdf/content-sink;1", &rv);
86
87 if (NS_FAILED(rv)) return rv;
88
89 rv = sink->Init(aBaseURI);
90 if (NS_FAILED(rv)) return rv;
91
92 // We set the content sink's data source directly to our in-memory
93 // store. This allows the initial content to be generated "directly".
94 rv = sink->SetDataSource(aSink);
95 if (NS_FAILED(rv)) return rv;
96
97 nsCOMPtr<nsIParser> parser = do_CreateInstance(kParserCID, &rv);
98 if (NS_FAILED(rv)) return rv;
99
100 parser->SetDocumentCharset(NS_LITERAL_CSTRING("UTF-8"),
101 kCharsetFromOtherComponent);
102 parser->SetContentSink(sink);
103
104 rv = parser->Parse(aBaseURI);
105 if (NS_FAILED(rv)) return rv;
106
107 nsCOMPtr<nsIStreamListener> listener =
108 do_QueryInterface(parser);
109
110 if (! listener)
111 return NS_ERROR_FAILURE;
112
113 nsCOMPtr<nsIInputStream> stream;
114 rv = NS_NewCStringInputStream(getter_AddRefs(stream), aString);
115 if (NS_FAILED(rv)) return rv;
116
117 nsCOMPtr<nsIChannel> channel;
118 rv = NS_NewInputStreamChannel(getter_AddRefs(channel), aBaseURI, stream,
119 NS_LITERAL_CSTRING("text/xml"));
120 if (NS_FAILED(rv)) return rv;
121
122 listener->OnStartRequest(channel, nullptr);
123 listener->OnDataAvailable(channel, nullptr, stream, 0, aString.Length());
124 listener->OnStopRequest(channel, nullptr, NS_OK);
125
126 return NS_OK;
127 }

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