1 | // Copyright 2011 Google Inc. All Rights Reserved. |
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2 | // |
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3 | // Redistribution and use in source and binary forms, with or without |
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4 | // modification, are permitted provided that the following conditions are |
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5 | // met: |
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6 | // |
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7 | // * Redistributions of source code must retain the above copyright |
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8 | // notice, this list of conditions and the following disclaimer. |
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9 | // * Redistributions in binary form must reproduce the above |
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10 | // copyright notice, this list of conditions and the following disclaimer |
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11 | // in the documentation and/or other materials provided with the |
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12 | // distribution. |
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13 | // * Neither the name of Google Inc. nor the names of its |
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14 | // contributors may be used to endorse or promote products derived from |
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15 | // this software without specific prior written permission. |
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16 | // |
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17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | |
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29 | #include <string.h> |
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30 | |
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31 | #include "snappy-sinksource.h" |
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32 | |
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33 | namespace snappy { |
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34 | |
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35 | Source::~Source() { } |
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36 | |
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37 | Sink::~Sink() { } |
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38 | |
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39 | char* Sink::GetAppendBuffer(size_t length, char* scratch) { |
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40 | return scratch; |
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41 | } |
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42 | |
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43 | ByteArraySource::~ByteArraySource() { } |
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44 | |
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45 | size_t ByteArraySource::Available() const { return left_; } |
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46 | |
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47 | const char* ByteArraySource::Peek(size_t* len) { |
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48 | *len = left_; |
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49 | return ptr_; |
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50 | } |
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51 | |
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52 | void ByteArraySource::Skip(size_t n) { |
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53 | left_ -= n; |
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54 | ptr_ += n; |
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55 | } |
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56 | |
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57 | UncheckedByteArraySink::~UncheckedByteArraySink() { } |
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58 | |
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59 | void UncheckedByteArraySink::Append(const char* data, size_t n) { |
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60 | // Do no copying if the caller filled in the result of GetAppendBuffer() |
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61 | if (data != dest_) { |
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62 | memcpy(dest_, data, n); |
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63 | } |
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64 | dest_ += n; |
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65 | } |
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66 | |
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67 | char* UncheckedByteArraySink::GetAppendBuffer(size_t len, char* scratch) { |
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68 | return dest_; |
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69 | } |
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70 | |
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71 | } |
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