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annotate Core/HttpServer/FilesystemHttpSender.cpp @ 1519:8bd0d897763f

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refactoring: IHttpStreamAnswer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Aug 2015 13:15:16 +0200
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, 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 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32 #include "../PrecompiledHeaders.h"
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33 #include "FilesystemHttpSender.h"
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35 #include "../Toolbox.h"
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37 #include <stdio.h>
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40 static const size_t CHUNK_SIZE = 64 * 1024; // Use 64KB chunks
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41
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42 namespace Orthanc
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43 {
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44 void FilesystemHttpSender::Open()
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45 {
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46 SetFilename(path_.filename().string());
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47 file_.open(path_.string().c_str(), std::ifstream::binary);
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49 file_.seekg(0, file_.end);
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50 size_ = file_.tellg();
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51 file_.seekg(0, file_.beg);
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52
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53 chunk_.resize(CHUNK_SIZE);
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54 chunkSize_ = 0;
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55 }
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56
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57 FilesystemHttpSender::FilesystemHttpSender(const char* path)
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58 {
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59 path_ = std::string(path);
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60 Open();
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61 }
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62
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63 FilesystemHttpSender::FilesystemHttpSender(const boost::filesystem::path& path)
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64 {
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65 path_ = path;
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66 Open();
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67 }
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68
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69 FilesystemHttpSender::FilesystemHttpSender(const FilesystemStorage& storage,
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70 const std::string& uuid)
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71 {
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72 path_ = storage.GetPath(uuid).string();
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73 Open();
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74 }
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77 bool FilesystemHttpSender::ReadNextChunk()
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78 {
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79 file_.read(&chunk_[0], chunk_.size());
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80
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81 chunkSize_ = file_.gcount();
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82
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83 return chunkSize_ > 0;
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84 }
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85 }