1 /*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32
33 #if ENABLE(BLOB)
34
35 #include "FileReaderSync.h"
36
37 #include "ArrayBuffer.h"
38 #include "Blob.h"
39 #include "BlobURL.h"
40 #include "FileException.h"
41 #include "FileReaderLoader.h"
42 #include <wtf/PassRefPtr.h>
43
44 namespace WebCore {
45
FileReaderSync()46 FileReaderSync::FileReaderSync()
47 {
48 }
49
readAsArrayBuffer(ScriptExecutionContext * scriptExecutionContext,Blob * blob,ExceptionCode & ec)50 PassRefPtr<ArrayBuffer> FileReaderSync::readAsArrayBuffer(ScriptExecutionContext* scriptExecutionContext, Blob* blob, ExceptionCode& ec)
51 {
52 if (!blob)
53 return 0;
54
55 FileReaderLoader loader(FileReaderLoader::ReadAsArrayBuffer, 0);
56 startLoading(scriptExecutionContext, loader, blob, ec);
57
58 return loader.arrayBufferResult();
59 }
60
readAsBinaryString(ScriptExecutionContext * scriptExecutionContext,Blob * blob,ExceptionCode & ec)61 String FileReaderSync::readAsBinaryString(ScriptExecutionContext* scriptExecutionContext, Blob* blob, ExceptionCode& ec)
62 {
63 if (!blob)
64 return String();
65
66 FileReaderLoader loader(FileReaderLoader::ReadAsBinaryString, 0);
67 startLoading(scriptExecutionContext, loader, blob, ec);
68 return loader.stringResult();
69 }
70
readAsText(ScriptExecutionContext * scriptExecutionContext,Blob * blob,const String & encoding,ExceptionCode & ec)71 String FileReaderSync::readAsText(ScriptExecutionContext* scriptExecutionContext, Blob* blob, const String& encoding, ExceptionCode& ec)
72 {
73 if (!blob)
74 return String();
75
76 FileReaderLoader loader(FileReaderLoader::ReadAsText, 0);
77 loader.setEncoding(encoding);
78 startLoading(scriptExecutionContext, loader, blob, ec);
79 return loader.stringResult();
80 }
81
readAsDataURL(ScriptExecutionContext * scriptExecutionContext,Blob * blob,ExceptionCode & ec)82 String FileReaderSync::readAsDataURL(ScriptExecutionContext* scriptExecutionContext, Blob* blob, ExceptionCode& ec)
83 {
84 if (!blob)
85 return String();
86
87 FileReaderLoader loader(FileReaderLoader::ReadAsDataURL, 0);
88 loader.setDataType(blob->type());
89 startLoading(scriptExecutionContext, loader, blob, ec);
90 return loader.stringResult();
91 }
92
startLoading(ScriptExecutionContext * scriptExecutionContext,FileReaderLoader & loader,Blob * blob,ExceptionCode & ec)93 void FileReaderSync::startLoading(ScriptExecutionContext* scriptExecutionContext, FileReaderLoader& loader, Blob* blob, ExceptionCode& ec)
94 {
95 loader.start(scriptExecutionContext, blob);
96 ec = FileException::ErrorCodeToExceptionCode(loader.errorCode());
97 }
98
99 } // namespace WebCore
100
101 #endif // ENABLE(BLOB)
102