1 | // |
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2 | // LineEndingConverter.cpp |
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3 | // |
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4 | // $Id: //poco/1.3/Foundation/src/LineEndingConverter.cpp#2 $ |
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5 | // |
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6 | // Library: Foundation |
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7 | // Package: Streams |
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8 | // Module: LineEndingConverter |
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9 | // |
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10 | // Copyright (c) 2005-2006, 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/LineEndingConverter.h> |
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38 | |
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39 | |
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40 | namespace Poco { |
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41 | |
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42 | |
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43 | #if defined(_WIN32) |
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44 | #define POCO_DEFAULT_NEWLINE_CHARS "\r\n" |
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45 | #else |
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46 | #define POCO_DEFAULT_NEWLINE_CHARS "\n" |
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47 | #endif |
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48 | |
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49 | |
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50 | const std::string LineEnding::NEWLINE_DEFAULT(POCO_DEFAULT_NEWLINE_CHARS); |
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51 | const std::string LineEnding::NEWLINE_CR("\r"); |
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52 | const std::string LineEnding::NEWLINE_CRLF("\r\n"); |
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53 | const std::string LineEnding::NEWLINE_LF("\n"); |
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54 | |
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55 | |
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56 | LineEndingConverterStreamBuf::LineEndingConverterStreamBuf(std::istream& istr): |
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57 | _pIstr(&istr), |
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58 | _pOstr(0), |
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59 | _newLine(LineEnding::NEWLINE_DEFAULT), |
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60 | _lastChar(0) |
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61 | { |
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62 | _it = _newLine.end(); |
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63 | } |
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64 | |
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65 | |
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66 | LineEndingConverterStreamBuf::LineEndingConverterStreamBuf(std::ostream& ostr): |
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67 | _pIstr(0), |
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68 | _pOstr(&ostr), |
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69 | _newLine(LineEnding::NEWLINE_DEFAULT), |
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70 | _lastChar(0) |
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71 | { |
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72 | _it = _newLine.end(); |
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73 | } |
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74 | |
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75 | |
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76 | LineEndingConverterStreamBuf::~LineEndingConverterStreamBuf() |
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77 | { |
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78 | } |
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79 | |
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80 | |
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81 | void LineEndingConverterStreamBuf::setNewLine(const std::string& newLineCharacters) |
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82 | { |
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83 | _newLine = newLineCharacters; |
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84 | _it = _newLine.end(); |
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85 | } |
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86 | |
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87 | |
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88 | const std::string& LineEndingConverterStreamBuf::getNewLine() const |
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89 | { |
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90 | return _newLine; |
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91 | } |
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92 | |
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93 | |
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94 | int LineEndingConverterStreamBuf::readFromDevice() |
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95 | { |
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96 | poco_assert_dbg (_pIstr); |
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97 | |
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98 | while (_it == _newLine.end()) |
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99 | { |
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100 | int c = _pIstr->get(); |
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101 | if (c == '\r') |
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102 | { |
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103 | if (_pIstr->peek() == '\n') _pIstr->get(); |
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104 | _it = _newLine.begin(); |
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105 | } |
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106 | else if (c == '\n') |
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107 | { |
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108 | _it = _newLine.begin(); |
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109 | } |
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110 | else return c; |
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111 | } |
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112 | return *_it++; |
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113 | } |
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114 | |
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115 | |
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116 | int LineEndingConverterStreamBuf::writeToDevice(char c) |
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117 | { |
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118 | poco_assert_dbg (_pOstr); |
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119 | |
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120 | if (c == '\r' || (c == '\n' && _lastChar != '\r')) |
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121 | _pOstr->write(_newLine.data(), (std::streamsize) _newLine.length()); |
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122 | if (c != '\n' && c != '\r') |
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123 | _pOstr->put(c); |
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124 | _lastChar = c; |
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125 | return charToInt(c); |
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126 | } |
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127 | |
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128 | |
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129 | LineEndingConverterIOS::LineEndingConverterIOS(std::istream& istr): _buf(istr) |
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130 | { |
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131 | poco_ios_init(&_buf); |
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132 | } |
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133 | |
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134 | |
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135 | LineEndingConverterIOS::LineEndingConverterIOS(std::ostream& ostr): _buf(ostr) |
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136 | { |
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137 | poco_ios_init(&_buf); |
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138 | } |
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139 | |
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140 | |
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141 | LineEndingConverterIOS::~LineEndingConverterIOS() |
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142 | { |
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143 | } |
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144 | |
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145 | |
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146 | void LineEndingConverterIOS::setNewLine(const std::string& newLineCharacters) |
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147 | { |
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148 | _buf.setNewLine(newLineCharacters); |
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149 | } |
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150 | |
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151 | |
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152 | const std::string& LineEndingConverterIOS::getNewLine() const |
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153 | { |
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154 | return _buf.getNewLine(); |
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155 | } |
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156 | |
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157 | |
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158 | LineEndingConverterStreamBuf* LineEndingConverterIOS::rdbuf() |
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159 | { |
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160 | return &_buf; |
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161 | } |
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162 | |
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163 | |
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164 | InputLineEndingConverter::InputLineEndingConverter(std::istream& istr): |
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165 | LineEndingConverterIOS(istr), |
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166 | std::istream(&_buf) |
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167 | { |
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168 | } |
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169 | |
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170 | |
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171 | InputLineEndingConverter::InputLineEndingConverter(std::istream& istr, const std::string& newLineCharacters): |
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172 | LineEndingConverterIOS(istr), |
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173 | std::istream(&_buf) |
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174 | { |
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175 | setNewLine(newLineCharacters); |
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176 | } |
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177 | |
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178 | |
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179 | InputLineEndingConverter::~InputLineEndingConverter() |
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180 | { |
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181 | } |
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182 | |
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183 | |
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184 | OutputLineEndingConverter::OutputLineEndingConverter(std::ostream& ostr): |
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185 | LineEndingConverterIOS(ostr), |
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186 | std::ostream(&_buf) |
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187 | { |
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188 | } |
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189 | |
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190 | |
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191 | OutputLineEndingConverter::OutputLineEndingConverter(std::ostream& ostr, const std::string& newLineCharacters): |
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192 | LineEndingConverterIOS(ostr), |
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193 | std::ostream(&_buf) |
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194 | { |
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195 | setNewLine(newLineCharacters); |
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196 | } |
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197 | |
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198 | |
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199 | OutputLineEndingConverter::~OutputLineEndingConverter() |
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200 | { |
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201 | } |
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202 | |
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203 | |
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204 | } // namespace Poco |
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