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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 "Toolbox.h"
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22
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23 #include "PalantirException.h"
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24
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25 #include <string.h>
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26 #include <boost/filesystem.hpp>
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27 #include <boost/filesystem/fstream.hpp>
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28 #include <algorithm>
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29
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30 #if defined(_WIN32)
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31 #include <windows.h>
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32 #endif
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33
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34 #if defined(__linux)
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10
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35 #include <signal.h>
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0
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36 #include <unistd.h>
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37 #endif
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38
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39
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40 namespace Palantir
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41 {
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42 static bool finish;
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43
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10
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44 #if defined(_WIN32)
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45 static BOOL WINAPI ConsoleControlHandler(DWORD dwCtrlType)
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46 {
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47 // http://msdn.microsoft.com/en-us/library/ms683242(v=vs.85).aspx
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48 finish = true;
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49 return true;
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50 }
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51 #else
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0
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52 static void SignalHandler(int)
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53 {
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54 finish = true;
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55 }
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10
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56 #endif
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0
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57
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58 void Toolbox::Sleep(uint32_t seconds)
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59 {
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60 #if defined(_WIN32)
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61 ::Sleep(static_cast<DWORD>(seconds) * static_cast<DWORD>(1000));
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62 #elif defined(__linux)
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63 usleep(static_cast<uint64_t>(seconds) * static_cast<uint64_t>(1000000));
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64 #else
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65 #error Support your platform here
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66 #endif
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67 }
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68
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69 void Toolbox::USleep(uint64_t microSeconds)
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70 {
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71 #if defined(_WIN32)
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8
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72 ::Sleep(static_cast<DWORD>(microSeconds / static_cast<uint64_t>(1000)));
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0
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73 #elif defined(__linux)
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74 usleep(microSeconds);
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75 #else
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76 #error Support your platform here
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77 #endif
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78 }
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79
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80
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81 void Toolbox::ServerBarrier()
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82 {
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10
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83 #if defined(_WIN32)
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84 SetConsoleCtrlHandler(ConsoleControlHandler, true);
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85 #else
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0
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86 signal(SIGINT, SignalHandler);
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87 signal(SIGQUIT, SignalHandler);
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88 #endif
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89
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90 finish = false;
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91 while (!finish)
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92 {
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93 USleep(100000);
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94 }
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95
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10
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96 #if defined(_WIN32)
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97 SetConsoleCtrlHandler(ConsoleControlHandler, false);
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98 #else
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0
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99 signal(SIGINT, NULL);
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100 signal(SIGQUIT, NULL);
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101 #endif
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102 }
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103
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104
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105
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106 void Toolbox::ToUpperCase(std::string& s)
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107 {
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108 std::transform(s.begin(), s.end(), s.begin(), toupper);
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109 }
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110
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111
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112 void Toolbox::ToLowerCase(std::string& s)
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113 {
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114 std::transform(s.begin(), s.end(), s.begin(), tolower);
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115 }
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116
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117
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118
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119 void Toolbox::ReadFile(std::string& content,
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120 const std::string& path)
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121 {
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122 boost::filesystem::ifstream f;
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123 f.open(path, std::ifstream::in | std::ios::binary);
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124 if (!f.good())
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125 {
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126 throw PalantirException("Unable to open a file");
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127 }
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128
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129 // http://www.cplusplus.com/reference/iostream/istream/tellg/
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130 f.seekg(0, std::ios::end);
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131 std::streamsize size = f.tellg();
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132 f.seekg(0, std::ios::beg);
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133
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134 content.resize(size);
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135 if (size != 0)
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136 {
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137 f.read(reinterpret_cast<char*>(&content[0]), size);
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138 }
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139
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140 f.close();
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141 }
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142
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143
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144 void Toolbox::RemoveFile(const std::string& path)
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145 {
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146 if (boost::filesystem::exists(path))
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147 {
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148 if (boost::filesystem::is_regular_file(path))
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149 boost::filesystem::remove(path);
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150 else
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151 throw PalantirException("The path is not a regular file: " + path);
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152 }
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153 }
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154
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155
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156
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157 void Toolbox::SplitUriComponents(UriComponents& components,
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158 const std::string& uri)
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159 {
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160 static const char URI_SEPARATOR = '/';
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161
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162 components.clear();
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163
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164 if (uri.size() == 0 ||
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165 uri[0] != URI_SEPARATOR)
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166 {
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167 throw PalantirException(ErrorCode_UriSyntax);
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168 }
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169
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170 // Count the number of slashes in the URI to make an assumption
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171 // about the number of components in the URI
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172 unsigned int estimatedSize = 0;
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173 for (unsigned int i = 0; i < uri.size(); i++)
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174 {
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175 if (uri[i] == URI_SEPARATOR)
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176 estimatedSize++;
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177 }
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178
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179 components.reserve(estimatedSize - 1);
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180
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181 unsigned int start = 1;
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182 unsigned int end = 1;
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183 while (end < uri.size())
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184 {
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185 // This is the loop invariant
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186 assert(uri[start - 1] == '/' && (end >= start));
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187
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188 if (uri[end] == '/')
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189 {
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190 components.push_back(std::string(&uri[start], end - start));
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191 end++;
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192 start = end;
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193 }
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194 else
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195 {
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196 end++;
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197 }
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198 }
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199
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200 if (start < uri.size())
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201 {
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202 components.push_back(std::string(&uri[start], end - start));
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203 }
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204 }
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205
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206
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207 bool Toolbox::IsChildUri(const UriComponents& baseUri,
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208 const UriComponents& testedUri)
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209 {
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210 if (testedUri.size() < baseUri.size())
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211 {
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212 return false;
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213 }
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214
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215 for (size_t i = 0; i < baseUri.size(); i++)
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216 {
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217 if (baseUri[i] != testedUri[i])
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218 return false;
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219 }
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220
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221 return true;
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222 }
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223
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224
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225 std::string Toolbox::AutodetectMimeType(const std::string& path)
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226 {
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227 std::string contentType;
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228 size_t lastDot = path.rfind('.');
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229 size_t lastSlash = path.rfind('/');
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230
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231 if (lastDot == std::string::npos ||
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232 (lastSlash != std::string::npos && lastDot < lastSlash))
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233 {
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234 // No trailing dot, unable to detect the content type
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235 }
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236 else
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237 {
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238 const char* extension = &path[lastDot + 1];
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239
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240 // http://en.wikipedia.org/wiki/Mime_types
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241 // Text types
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242 if (!strcmp(extension, "txt"))
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243 contentType = "text/plain";
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244 else if (!strcmp(extension, "html"))
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245 contentType = "text/html";
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246 else if (!strcmp(extension, "xml"))
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247 contentType = "text/xml";
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248 else if (!strcmp(extension, "css"))
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249 contentType = "text/css";
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250
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251 // Application types
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252 else if (!strcmp(extension, "js"))
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253 contentType = "application/javascript";
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254 else if (!strcmp(extension, "json"))
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255 contentType = "application/json";
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256 else if (!strcmp(extension, "pdf"))
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257 contentType = "application/pdf";
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258
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259 // Images types
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260 else if (!strcmp(extension, "jpg") || !strcmp(extension, "jpeg"))
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261 contentType = "image/jpeg";
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262 else if (!strcmp(extension, "gif"))
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263 contentType = "image/gif";
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264 else if (!strcmp(extension, "png"))
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265 contentType = "image/png";
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266 }
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267
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268 return contentType;
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269 }
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270
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271
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272 std::string Toolbox::FlattenUri(const UriComponents& components,
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273 size_t fromLevel)
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274 {
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275 if (components.size() <= fromLevel)
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276 {
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277 return "/";
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278 }
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279 else
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280 {
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281 std::string r;
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282
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283 for (size_t i = fromLevel; i < components.size(); i++)
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284 {
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285 r += "/" + components[i];
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286 }
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287
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288 return r;
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289 }
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290 }
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291
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292
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293
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294 uint64_t Toolbox::GetFileSize(const std::string& path)
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295 {
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296 try
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297 {
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298 return static_cast<uint64_t>(boost::filesystem::file_size(path));
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299 }
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300 catch (boost::filesystem::filesystem_error)
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301 {
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302 throw PalantirException(ErrorCode_InexistentFile);
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303 }
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304 }
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305 }
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