The Tor Browser: rdf/tests/triplescat/triplescat.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 /**

     7  * A simple test program that reads in RDF/XML into an in-memory data

     8  * source, then serializes NTriples format back to stdout (or none).

     9  *

    10  * The program takes a single parameter: the URL from which to read,

    11  * plus an optional parameter -q

    12  */

    14 #include <stdio.h>

    15 #include "nsXPCOM.h"

    16 #include "nsCOMPtr.h"

    17 //#include "nsString.h"

    18 #include "nsIComponentManager.h"

    19 #include "nsComponentManagerUtils.h"

    20 #include "nsServiceManagerUtils.h"

    21 #include "nsThreadUtils.h"

    22 #include "nsIIOService.h"

    23 #include "nsIInputStream.h"

    24 #include "nsIOutputStream.h"

    25 #include "nsIRDFCompositeDataSource.h"

    26 #include "nsIRDFNode.h"

    27 #include "nsIRDFRemoteDataSource.h"

    28 #include "nsIRDFService.h"

    29 #include "nsIRDFXMLSource.h"

    30 #include "nsIServiceManager.h"

    31 #include "nsIStreamListener.h"

    32 #include "nsIURL.h"

    33 #include "nsRDFCID.h"

    34 #include "plstr.h"

    35 #include "prio.h"

    36 #include "prthread.h"

    38 #include "rdf.h"

    39 #include "rdfIDataSource.h"

    40 #include "rdfITripleVisitor.h"

    41 #include "rdfISerializer.h"

    43 ////////////////////////////////////////////////////////////////////////

    44 // Blatantly stolen from netwerk/test/

    45 #define RETURN_IF_FAILED(rv, step) \

    46     PR_BEGIN_MACRO \

    47     if (NS_FAILED(rv)) { \

    48         printf(">>> %s failed: rv=%x\n", step, static_cast<uint32_t>(rv)); \

    49         return 1;\

    50     } \

    51     PR_END_MACRO

    53 ////////////////////////////////////////////////////////////////////////

    55 class ConsoleOutputStreamImpl : public nsIOutputStream

    56 {

    57 public:

    58     ConsoleOutputStreamImpl(void) {}

    59     virtual ~ConsoleOutputStreamImpl(void) {}

    61     // nsISupports interface

    62     NS_DECL_ISUPPORTS

    64     // nsIOutputStream interface

    65     NS_IMETHOD Close(void) {

    66         return NS_OK;

    67     }

    69     NS_IMETHOD Write(const char* aBuf, uint32_t aCount, uint32_t *aWriteCount) {

    70         PR_Write(PR_GetSpecialFD(PR_StandardOutput), aBuf, aCount);

    71         *aWriteCount = aCount;

    72         return NS_OK;

    73     }

    75     NS_IMETHOD

    76     WriteFrom(nsIInputStream *inStr, uint32_t count, uint32_t *_retval) {

    77         NS_NOTREACHED("WriteFrom");

    78         return NS_ERROR_NOT_IMPLEMENTED;

    79     }

    81     NS_IMETHOD

    82     WriteSegments(nsReadSegmentFun reader, void * closure, uint32_t count, uint32_t *_retval) {

    83         NS_NOTREACHED("WriteSegments");

    84         return NS_ERROR_NOT_IMPLEMENTED;

    85     }

    87     NS_IMETHOD

    88     IsNonBlocking(bool *aNonBlocking) {

    89         NS_NOTREACHED("IsNonBlocking");

    90         return NS_ERROR_NOT_IMPLEMENTED;

    91     }

    93     NS_IMETHOD Flush(void) {

    94         PR_Sync(PR_GetSpecialFD(PR_StandardOutput));

    95         return NS_OK;

    96     }

    97 };

    99 NS_IMPL_ISUPPORTS(ConsoleOutputStreamImpl, nsIOutputStream)

   101 ////////////////////////////////////////////////////////////////////////

   103 int

   104 main(int argc, char** argv)

   105 {

   106     nsresult rv;

   108     if (argc < 2) {

   109         fprintf(stderr, "usage: %s <url>\n", argv[0]);

   110         return 1;

   111     }

   113     NS_InitXPCOM2(nullptr, nullptr, nullptr);

   115     // Create a stream data source and initialize it on argv[1], which

   116     // is hopefully a "file:" URL.

   117     nsCOMPtr<nsIRDFDataSource> ds =

   118         do_CreateInstance(NS_RDF_DATASOURCE_CONTRACTID_PREFIX "xml-datasource",

   119                           &rv);

   120     RETURN_IF_FAILED(rv, "RDF/XML datasource creation");

   122     nsCOMPtr<nsIRDFRemoteDataSource> remote = do_QueryInterface(ds, &rv);

   123     RETURN_IF_FAILED(rv, "QI to nsIRDFRemoteDataSource");

   125     rv = remote->Init(argv[1]);

   126     RETURN_IF_FAILED(rv, "datasource initialization");

   128     // Okay, this should load the XML file...

   129     rv = remote->Refresh(false);

   130     RETURN_IF_FAILED(rv, "datasource refresh");

   132     // Pump events until the load is finished

   133     nsCOMPtr<nsIThread> thread = do_GetCurrentThread();

   134     bool done = false;

   135     while (!done) {

   136         NS_ENSURE_TRUE(NS_ProcessNextEvent(thread), 1);

   137         remote->GetLoaded(&done);

   138     }

   140     nsCOMPtr<rdfIDataSource> rdfds = do_QueryInterface(ds, &rv);

   141     RETURN_IF_FAILED(rv, "QI to rdIDataSource");

   142     {

   143         nsCOMPtr<nsIOutputStream> out = new ConsoleOutputStreamImpl();

   144         nsCOMPtr<rdfISerializer> ser =

   145             do_CreateInstance(NS_RDF_SERIALIZER "ntriples", &rv);

   146         RETURN_IF_FAILED(rv, "Creation of NTriples Serializer");

   147         rv = ser->Serialize(rdfds, out);

   148         RETURN_IF_FAILED(rv, "Serialization to NTriples");

   149         out->Close();

   150     }

   152     return 0;

   153 }

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