1 | /* |
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2 | * Copyright (c) 2011, Chris Johns <chrisj@rtems.org> |
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3 | * |
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4 | * Permission to use, copy, modify, and/or distribute this software for any |
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5 | * purpose with or without fee is hereby granted, provided that the above |
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6 | * copyright notice and this permission notice appear in all copies. |
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7 | * |
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8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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15 | */ |
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16 | /** |
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17 | * @file |
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18 | * |
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19 | * @ingroup rtems-ld |
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20 | * |
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21 | * @brief Process execute and various supporting parts. |
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22 | * |
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23 | */ |
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24 | |
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25 | #if !defined (_RLD_PEX_H_) |
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26 | #define _RLD_PEX_H_ |
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27 | |
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28 | #include <list> |
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29 | #include <string> |
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30 | #include <vector> |
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31 | |
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32 | namespace rld |
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33 | { |
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34 | namespace process |
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35 | { |
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36 | /** |
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37 | * Manage temporary files. We keep these so we can delete them when |
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38 | * we exit. |
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39 | */ |
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40 | class temporary_files |
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41 | { |
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42 | public: |
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43 | /** |
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44 | * Container of temporary file names. |
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45 | */ |
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46 | typedef std::list < std::string > tempfile_container; |
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47 | |
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48 | /** |
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49 | * Construct the temporary files. |
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50 | */ |
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51 | temporary_files (); |
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52 | |
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53 | /** |
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54 | * Destruct cleaning up. |
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55 | */ |
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56 | ~temporary_files (); |
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57 | |
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58 | /** |
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59 | * Get a new temporary file name. |
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60 | */ |
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61 | const std::string get (); |
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62 | |
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63 | /** |
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64 | * Remove the temporary file. |
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65 | */ |
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66 | void erase (const std::string& name); |
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67 | |
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68 | /** |
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69 | * Remove all temporary files. |
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70 | */ |
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71 | void clean_up (); |
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72 | |
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73 | private: |
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74 | |
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75 | /* |
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76 | * Delete the file. |
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77 | */ |
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78 | void unlink (const std::string& name); |
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79 | |
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80 | tempfile_container tempfiles; //< The temporary files. |
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81 | |
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82 | }; |
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83 | |
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84 | /** |
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85 | * The temporary files. |
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86 | */ |
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87 | static temporary_files temporaries; |
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88 | |
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89 | /** |
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90 | * Handle the output files from the process. |
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91 | */ |
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92 | class tempfile |
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93 | { |
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94 | public: |
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95 | |
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96 | /** |
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97 | * Get a temporary file name. |
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98 | */ |
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99 | tempfile (); |
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100 | |
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101 | /** |
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102 | * Clean up the temporary file. |
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103 | */ |
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104 | ~tempfile (); |
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105 | |
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106 | /** |
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107 | * Open the temporary file. |
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108 | */ |
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109 | void open (); |
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110 | |
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111 | /** |
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112 | * Close the temporary file. |
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113 | */ |
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114 | void close (); |
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115 | |
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116 | /** |
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117 | * The name of the temp file. |
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118 | */ |
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119 | const std::string& name () const; |
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120 | |
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121 | /** |
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122 | * Size of the file. |
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123 | */ |
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124 | size_t size (); |
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125 | |
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126 | /** |
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127 | * Get all the file. |
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128 | */ |
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129 | void get (std::string& all); |
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130 | |
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131 | /** |
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132 | * Get time. |
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133 | */ |
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134 | void getline (std::string& line); |
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135 | |
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136 | /** |
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137 | * Output the file. |
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138 | */ |
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139 | void output (const std::string& prefix, |
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140 | std::ostream& out, |
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141 | bool line_numbers = false); |
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142 | |
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143 | /** |
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144 | * Output the file. |
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145 | */ |
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146 | void output (std::ostream& out); |
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147 | |
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148 | private: |
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149 | |
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150 | std::string _name; //< The name of the file. |
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151 | int fd; //< The file descriptor |
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152 | char buf[256]; //< The read buffer. |
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153 | int level; //< The level of data in the buffer. |
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154 | }; |
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155 | |
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156 | /** |
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157 | * The arguments containter has a single argument per element. |
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158 | */ |
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159 | typedef std::vector < std::string > arg_container; |
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160 | |
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161 | /** |
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162 | * Execute result. |
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163 | */ |
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164 | struct status |
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165 | { |
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166 | enum types |
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167 | { |
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168 | normal, //< The process terminated normally by a call to _exit(2) or exit(3). |
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169 | signal, //< The process terminated due to receipt of a signal. |
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170 | stopped //< The process has not terminated, but has stopped and can be restarted. |
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171 | }; |
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172 | |
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173 | types type; //< Type of status. |
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174 | int code; //< The status code returned. |
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175 | }; |
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176 | |
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177 | /** |
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178 | * Execute a process and capture stdout and stderr. The first element is |
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179 | * the program name to run. Return an error code. |
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180 | */ |
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181 | status execute (const std::string& pname, |
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182 | const arg_container& args, |
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183 | const std::string& outname, |
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184 | const std::string& errname); |
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185 | |
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186 | /** |
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187 | * Execute a process and capture stdout and stderr given a command line |
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188 | * string. Return an error code. |
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189 | */ |
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190 | status execute (const std::string& pname, |
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191 | const std::string& command, |
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192 | const std::string& outname, |
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193 | const std::string& errname); |
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194 | |
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195 | /** |
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196 | * Parse a command line into arguments. It support quoting. |
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197 | */ |
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198 | void parse_command_line (const std::string& command, arg_container& args); |
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199 | } |
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200 | } |
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201 | |
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202 | #endif |
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