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1 /**
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2 * Palantir - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 **/
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19
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20
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21 #include "ChunkedBuffer.h"
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22
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23 #include <cassert>
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24 #include <string.h>
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25
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26
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27 namespace Palantir
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28 {
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29 void ChunkedBuffer::Clear()
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30 {
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31 numBytes_ = 0;
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32
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33 for (Chunks::iterator it = chunks_.begin();
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34 it != chunks_.end(); it++)
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35 {
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36 delete *it;
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37 }
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38 }
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39
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40
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41 void ChunkedBuffer::AddChunk(const char* chunkData,
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42 size_t chunkSize)
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43 {
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44 if (chunkSize == 0)
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45 {
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46 return;
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47 }
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48
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49 assert(chunkData != NULL);
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50 chunks_.push_back(new std::string(chunkData, chunkSize));
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51 numBytes_ += chunkSize;
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52 }
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53
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54
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55 void ChunkedBuffer::Flatten(std::string& result)
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56 {
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57 result.resize(numBytes_);
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58
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59 size_t pos = 0;
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60 for (Chunks::iterator it = chunks_.begin();
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61 it != chunks_.end(); it++)
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62 {
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63 assert(*it != NULL);
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64
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65 size_t s = (*it)->size();
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66 if (s != 0)
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67 {
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68 memcpy(&result[pos], (*it)->c_str(), s);
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69 pos += s;
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70 }
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71
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72 delete *it;
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73 }
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74
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75 chunks_.clear();
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76 }
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77 }
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