1 | // |
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2 | // TemporaryFile.cpp |
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3 | // |
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4 | // $Id: //poco/1.3/Foundation/src/TemporaryFile.cpp#2 $ |
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5 | // |
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6 | // Library: Foundation |
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7 | // Package: Filesystem |
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8 | // Module: TemporaryFile |
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9 | // |
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10 | // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. |
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11 | // and Contributors. |
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12 | // |
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13 | // Permission is hereby granted, free of charge, to any person or organization |
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14 | // obtaining a copy of the software and accompanying documentation covered by |
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15 | // this license (the "Software") to use, reproduce, display, distribute, |
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16 | // execute, and transmit the Software, and to prepare derivative works of the |
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17 | // Software, and to permit third-parties to whom the Software is furnished to |
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18 | // do so, all subject to the following: |
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19 | // |
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20 | // The copyright notices in the Software and this entire statement, including |
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21 | // the above license grant, this restriction and the following disclaimer, |
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22 | // must be included in all copies of the Software, in whole or in part, and |
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23 | // all derivative works of the Software, unless such copies or derivative |
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24 | // works are solely in the form of machine-executable object code generated by |
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25 | // a source language processor. |
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26 | // |
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27 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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28 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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29 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
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30 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
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31 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
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32 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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33 | // DEALINGS IN THE SOFTWARE. |
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34 | // |
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35 | |
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36 | |
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37 | #include "Poco/TemporaryFile.h" |
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38 | #include "Poco/Path.h" |
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39 | #include "Poco/Exception.h" |
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40 | #include "Poco/Process.h" |
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41 | #include "Poco/Mutex.h" |
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42 | #include <set> |
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43 | #include <sstream> |
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44 | |
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45 | |
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46 | namespace Poco { |
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47 | |
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48 | |
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49 | class TempFileCollector |
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50 | { |
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51 | public: |
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52 | TempFileCollector() |
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53 | { |
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54 | } |
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55 | |
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56 | ~TempFileCollector() |
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57 | { |
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58 | for (std::set<std::string>::iterator it = _files.begin(); it != _files.end(); ++it) |
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59 | { |
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60 | try |
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61 | { |
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62 | File f(*it); |
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63 | f.remove(true); |
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64 | } |
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65 | catch (Exception&) |
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66 | { |
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67 | } |
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68 | } |
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69 | } |
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70 | |
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71 | void registerFile(const std::string& path) |
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72 | { |
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73 | FastMutex::ScopedLock lock(_mutex); |
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74 | |
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75 | Path p(path); |
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76 | _files.insert(p.absolute().toString()); |
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77 | } |
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78 | |
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79 | private: |
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80 | std::set<std::string> _files; |
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81 | FastMutex _mutex; |
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82 | }; |
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83 | |
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84 | |
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85 | TemporaryFile::TemporaryFile(): File(tempName()), _keep(false) |
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86 | { |
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87 | } |
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88 | |
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89 | |
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90 | TemporaryFile::~TemporaryFile() |
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91 | { |
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92 | if (!_keep) |
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93 | { |
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94 | try |
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95 | { |
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96 | if (exists()) |
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97 | remove(true); |
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98 | } |
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99 | catch (Exception&) |
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100 | { |
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101 | } |
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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 TemporaryFile::keep() |
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107 | { |
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108 | _keep = true; |
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109 | } |
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110 | |
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111 | |
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112 | void TemporaryFile::keepUntilExit() |
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113 | { |
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114 | _keep = true; |
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115 | registerForDeletion(path()); |
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116 | } |
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117 | |
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118 | |
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119 | void TemporaryFile::registerForDeletion(const std::string& path) |
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120 | { |
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121 | static TempFileCollector fc; |
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122 | fc.registerFile(path); |
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123 | } |
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124 | |
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125 | |
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126 | std::string TemporaryFile::tempName() |
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127 | { |
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128 | std::ostringstream name; |
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129 | static FastMutex mutex; |
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130 | static unsigned long count = 0; |
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131 | mutex.lock(); |
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132 | unsigned long n = count++; |
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133 | mutex.unlock(); |
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134 | name << Path::temp(); |
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135 | name << "tmp" << Process::id(); |
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136 | for (int i = 0; i < 6; ++i) |
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137 | { |
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138 | name << char('a' + (n % 26)); |
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139 | n /= 26; |
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140 | } |
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141 | return name.str(); |
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142 | } |
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143 | |
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144 | |
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145 | } // namespace Poco |
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