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1 /* | 1 /* |
2 * Copyright (C) 2010 Google Inc. All rights reserved. | 2 * Copyright (C) 2010 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 */ | 29 */ |
30 | 30 |
31 #include "config.h" | 31 #include "config.h" |
32 #include "core/fileapi/Blob.h" | 32 #include "core/fileapi/Blob.h" |
33 | 33 |
| 34 #include "bindings/v8/ExceptionState.h" |
34 #include "core/dom/DOMURL.h" | 35 #include "core/dom/DOMURL.h" |
| 36 #include "core/dom/ExceptionCode.h" |
35 #include "core/dom/ExecutionContext.h" | 37 #include "core/dom/ExecutionContext.h" |
36 #include "core/fileapi/File.h" | 38 #include "core/fileapi/File.h" |
37 #include "platform/blob/BlobRegistry.h" | 39 #include "platform/blob/BlobRegistry.h" |
38 #include "platform/blob/BlobURL.h" | 40 #include "platform/blob/BlobURL.h" |
39 | 41 |
40 namespace WebCore { | 42 namespace WebCore { |
41 | 43 |
42 namespace { | 44 namespace { |
43 | 45 |
44 class BlobURLRegistry FINAL : public URLRegistry { | 46 class BlobURLRegistry FINAL : public URLRegistry { |
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97 end = 0; | 99 end = 0; |
98 if (start >= size) { | 100 if (start >= size) { |
99 start = 0; | 101 start = 0; |
100 end = 0; | 102 end = 0; |
101 } else if (end < start) | 103 } else if (end < start) |
102 end = start; | 104 end = start; |
103 else if (end > size) | 105 else if (end > size) |
104 end = size; | 106 end = size; |
105 } | 107 } |
106 | 108 |
107 PassRefPtrWillBeRawPtr<Blob> Blob::slice(long long start, long long end, const S
tring& contentType) const | 109 PassRefPtrWillBeRawPtr<Blob> Blob::slice(long long start, long long end, const S
tring& contentType, ExceptionState& exceptionState) const |
108 { | 110 { |
| 111 if (hasBeenClosed()) { |
| 112 exceptionState.throwDOMException(InvalidStateError, "Blob has been close
d."); |
| 113 return nullptr; |
| 114 } |
| 115 |
109 long long size = this->size(); | 116 long long size = this->size(); |
110 clampSliceOffsets(size, start, end); | 117 clampSliceOffsets(size, start, end); |
111 | 118 |
112 long long length = end - start; | 119 long long length = end - start; |
113 OwnPtr<BlobData> blobData = BlobData::create(); | 120 OwnPtr<BlobData> blobData = BlobData::create(); |
114 blobData->setContentType(contentType); | 121 blobData->setContentType(contentType); |
115 blobData->appendBlob(m_blobDataHandle, start, length); | 122 blobData->appendBlob(m_blobDataHandle, start, length); |
116 return Blob::create(BlobDataHandle::create(blobData.release(), length)); | 123 return Blob::create(BlobDataHandle::create(blobData.release(), length)); |
117 } | 124 } |
118 | 125 |
119 void Blob::close(ExecutionContext* executionContext) | 126 void Blob::close(ExecutionContext* executionContext, ExceptionState& exceptionSt
ate) |
120 { | 127 { |
121 if (!hasBeenClosed()) { | 128 if (hasBeenClosed()) { |
122 // Dereferencing a Blob that has been closed should result in | 129 exceptionState.throwDOMException(InvalidStateError, "Blob has been close
d."); |
123 // a network error. Revoke URLs registered against it through | 130 return; |
124 // its UUID. | 131 } |
125 DOMURL::revokeObjectUUID(executionContext, uuid()); | |
126 | 132 |
127 // A closed Blob should have size zero, which most consumers | 133 // Dereferencing a Blob that has been closed should result in |
128 // will treat as an empty Blob. The exception being the FileReader | 134 // a network error. Revoke URLs registered against it through |
129 // read operations which will throw. | 135 // its UUID. |
130 // FIXME: spec not yet set in stone in this regard, track updates to it
(http://crbug.com/344820.) | 136 DOMURL::revokeObjectUUID(executionContext, uuid()); |
131 OwnPtr<BlobData> blobData = BlobData::create(); | 137 |
132 blobData->setContentType(type()); | 138 // A Blob enters a 'readability state' of closed, where it will report its |
133 m_blobDataHandle = BlobDataHandle::create(blobData.release(), 0); | 139 // size as zero. Blob and FileReader operations now throws on |
134 m_hasBeenClosed = true; | 140 // being passed a Blob in that state. Downstream uses of closed Blobs |
135 } | 141 // (e.g., XHR.send()) consider them as empty. |
| 142 OwnPtr<BlobData> blobData = BlobData::create(); |
| 143 blobData->setContentType(type()); |
| 144 m_blobDataHandle = BlobDataHandle::create(blobData.release(), 0); |
| 145 m_hasBeenClosed = true; |
136 } | 146 } |
137 | 147 |
138 void Blob::appendTo(BlobData& blobData) const | 148 void Blob::appendTo(BlobData& blobData) const |
139 { | 149 { |
140 blobData.appendBlob(m_blobDataHandle, 0, m_blobDataHandle->size()); | 150 blobData.appendBlob(m_blobDataHandle, 0, m_blobDataHandle->size()); |
141 } | 151 } |
142 | 152 |
143 URLRegistry& Blob::registry() const | 153 URLRegistry& Blob::registry() const |
144 { | 154 { |
145 return BlobURLRegistry::registry(); | 155 return BlobURLRegistry::registry(); |
146 } | 156 } |
147 | 157 |
148 } // namespace WebCore | 158 } // namespace WebCore |
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