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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/base/test_data_stream.h" | |
| 6 | |
| 7 namespace net { | |
| 8 | |
| 9 TestDataStream::TestDataStream() { | |
| 10 Reset(); | |
| 11 } | |
| 12 | |
| 13 // Fill |buffer| with |length| bytes of data from the stream. | |
| 14 void TestDataStream::GetBytes(char* buffer, int length) { | |
| 15 while (length) { | |
| 16 AdvanceIndex(); | |
| 17 int bytes_to_copy = std::min(length, bytes_remaining_); | |
| 18 memcpy(buffer, buffer_ptr_, bytes_to_copy); | |
| 19 buffer += bytes_to_copy; | |
| 20 Consume(bytes_to_copy); | |
| 21 length -= bytes_to_copy; | |
| 22 } | |
| 23 } | |
| 24 | |
| 25 bool TestDataStream::VerifyBytes(const char *buffer, int length) { | |
| 26 while (length) { | |
| 27 AdvanceIndex(); | |
| 28 int bytes_to_compare = std::min(length, bytes_remaining_); | |
| 29 if (memcmp(buffer, buffer_ptr_, bytes_to_compare)) | |
| 30 return false; | |
| 31 Consume(bytes_to_compare); | |
| 32 length -= bytes_to_compare; | |
| 33 buffer += bytes_to_compare; | |
| 34 } | |
| 35 return true; | |
| 36 } | |
| 37 | |
| 38 void TestDataStream::Reset() { | |
| 39 index_ = 0; | |
| 40 bytes_remaining_ = 0; | |
| 41 buffer_ptr_ = buffer_; | |
| 42 } | |
| 43 | |
| 44 // If there is no data spilled over from the previous index, advance the | |
| 45 // index and fill the buffer. | |
| 46 void TestDataStream::AdvanceIndex() { | |
| 47 if (bytes_remaining_ == 0) { | |
| 48 // Convert it to ascii, but don't bother to reverse it. | |
| 49 // (e.g. 12345 becomes "54321") | |
| 50 int val = index_++; | |
| 51 do { | |
| 52 buffer_[bytes_remaining_++] = (val % 10) + '0'; | |
| 53 } while ((val /= 10) > 0); | |
| 54 buffer_[bytes_remaining_++] = '.'; | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 // Consume data from the spill buffer. | |
| 59 void TestDataStream::Consume(int bytes) { | |
| 60 bytes_remaining_ -= bytes; | |
| 61 if (bytes_remaining_) | |
| 62 buffer_ptr_ += bytes; | |
| 63 else | |
| 64 buffer_ptr_ = buffer_; | |
| 65 } | |
| 66 | |
| 67 } // namespace net | |
| 68 | |
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