[ec24a37] | 1 | /* |
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[a136346] | 2 | * Copyright (c) 2011, Chris Johns <chrisj@rtems.org> |
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[ec24a37] | 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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[a136346] | 7 | * |
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[ec24a37] | 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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[32cd4fc] | 36 | /** |
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| 37 | * Temporary file is a name and keep state. |
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| 38 | */ |
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| 39 | struct tempfile_ref |
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| 40 | { |
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| 41 | const std::string name; //< The name of the tempfile. |
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| 42 | bool keep; //< If true do not delete this file. |
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| 43 | |
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| 44 | tempfile_ref (const std::string& name, bool keep = false) |
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| 45 | : name (name), |
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| 46 | keep (keep) { |
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| 47 | } |
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| 48 | }; |
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| 49 | |
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[ec24a37] | 50 | /** |
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| 51 | * Manage temporary files. We keep these so we can delete them when |
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| 52 | * we exit. |
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| 53 | */ |
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| 54 | class temporary_files |
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| 55 | { |
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| 56 | public: |
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| 57 | /** |
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| 58 | * Container of temporary file names. |
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| 59 | */ |
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[32cd4fc] | 60 | typedef std::list < tempfile_ref > tempfile_container; |
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[a136346] | 61 | |
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[ec24a37] | 62 | /** |
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| 63 | * Construct the temporary files. |
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| 64 | */ |
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| 65 | temporary_files (); |
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| 66 | |
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| 67 | /** |
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| 68 | * Destruct cleaning up. |
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| 69 | */ |
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| 70 | ~temporary_files (); |
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| 71 | |
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| 72 | /** |
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| 73 | * Get a new temporary file name. |
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| 74 | */ |
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[32cd4fc] | 75 | const std::string get (const std::string& suffix = ".rldxx", |
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| 76 | bool keep = false); |
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[ec24a37] | 77 | |
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| 78 | /** |
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| 79 | * Remove the temporary file. |
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| 80 | */ |
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| 81 | void erase (const std::string& name); |
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| 82 | |
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[32cd4fc] | 83 | /** |
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| 84 | * Set the tempfile reference keep state to true. |
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| 85 | */ |
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| 86 | void keep (const std::string& name); |
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| 87 | |
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[ec24a37] | 88 | /** |
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| 89 | * Remove all temporary files. |
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| 90 | */ |
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| 91 | void clean_up (); |
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| 92 | |
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| 93 | private: |
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| 94 | |
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| 95 | /* |
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[32cd4fc] | 96 | * Delete the tempfile given the reference if not keeping. |
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[ec24a37] | 97 | */ |
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[32cd4fc] | 98 | void unlink (const tempfile_ref& ref); |
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[ec24a37] | 99 | |
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| 100 | tempfile_container tempfiles; //< The temporary files. |
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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 | * Handle the output files from the process. |
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| 106 | */ |
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| 107 | class tempfile |
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| 108 | { |
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| 109 | public: |
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| 110 | |
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| 111 | /** |
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[32cd4fc] | 112 | * Get a temporary file name given a suffix. |
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[ec24a37] | 113 | */ |
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[32cd4fc] | 114 | tempfile (const std::string& suffix = ".rldxx", bool keep = false); |
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[ec24a37] | 115 | |
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| 116 | /** |
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| 117 | * Clean up the temporary file. |
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| 118 | */ |
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| 119 | ~tempfile (); |
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| 120 | |
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| 121 | /** |
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[a136346] | 122 | * Open the temporary file. It can optionally be written too. |
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[ec24a37] | 123 | */ |
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[a136346] | 124 | void open (bool writable = false); |
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[ec24a37] | 125 | |
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| 126 | /** |
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| 127 | * Close the temporary file. |
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| 128 | */ |
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| 129 | void close (); |
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| 130 | |
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[32cd4fc] | 131 | /** |
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| 132 | * Override the temp file name automatically assigned with this name. The |
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| 133 | * suffix is appended. |
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| 134 | */ |
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| 135 | void override (const std::string& name); |
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| 136 | |
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| 137 | /** |
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| 138 | * Set the temp file keep state to true so it is not deleted. |
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| 139 | */ |
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| 140 | void keep (); |
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| 141 | |
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[ec24a37] | 142 | /** |
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| 143 | * The name of the temp file. |
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| 144 | */ |
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| 145 | const std::string& name () const; |
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| 146 | |
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| 147 | /** |
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| 148 | * Size of the file. |
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| 149 | */ |
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| 150 | size_t size (); |
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| 151 | |
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| 152 | /** |
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[a136346] | 153 | * Read all the file. |
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| 154 | */ |
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| 155 | void read (std::string& all); |
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| 156 | |
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| 157 | /** |
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| 158 | * Read a line at a time. |
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| 159 | */ |
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| 160 | void read_line (std::string& line); |
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| 161 | |
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| 162 | /** |
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| 163 | * Write the string to the file. |
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[ec24a37] | 164 | */ |
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[a136346] | 165 | void write (const std::string& s); |
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[ec24a37] | 166 | |
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| 167 | /** |
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[a136346] | 168 | * Write the string as a line to the file. |
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[ec24a37] | 169 | */ |
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[a136346] | 170 | void write_line (const std::string& s); |
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| 171 | |
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| 172 | /** |
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| 173 | * Write the strings to the file using a suitable line separator. |
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| 174 | */ |
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| 175 | void write_lines (const rld::strings& ss); |
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[ec24a37] | 176 | |
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| 177 | /** |
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| 178 | * Output the file. |
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| 179 | */ |
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[a136346] | 180 | void output (const std::string& prefix, |
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| 181 | std::ostream& out, |
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[ec24a37] | 182 | bool line_numbers = false); |
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| 183 | |
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| 184 | /** |
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| 185 | * Output the file. |
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| 186 | */ |
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| 187 | void output (std::ostream& out); |
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| 188 | |
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| 189 | private: |
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| 190 | |
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[32cd4fc] | 191 | std::string _name; //< The name of the file. |
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| 192 | const std::string suffix; //< The temp file's suffix. |
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| 193 | bool overridden; //< The name is overridden; may no exist. |
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| 194 | int fd; //< The file descriptor |
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| 195 | char buf[256]; //< The read buffer. |
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[67369b14] | 196 | size_t level; //< The level of data in the buffer. |
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[ec24a37] | 197 | }; |
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[a136346] | 198 | |
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| 199 | /** |
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| 200 | * Keep the temporary files. |
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| 201 | */ |
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| 202 | void set_keep_temporary_files (); |
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| 203 | |
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| 204 | /** |
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| 205 | * Clean up the temporaryes. |
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| 206 | */ |
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| 207 | void temporaries_clean_up (); |
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| 208 | |
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[ec24a37] | 209 | /** |
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| 210 | * The arguments containter has a single argument per element. |
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| 211 | */ |
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| 212 | typedef std::vector < std::string > arg_container; |
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| 213 | |
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[8807135] | 214 | /** |
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| 215 | * Split a string and append to the arguments. |
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| 216 | */ |
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| 217 | void args_append (arg_container& args, const std::string& str); |
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| 218 | |
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[ec24a37] | 219 | /** |
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| 220 | * Execute result. |
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| 221 | */ |
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| 222 | struct status |
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| 223 | { |
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| 224 | enum types |
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| 225 | { |
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| 226 | normal, //< The process terminated normally by a call to _exit(2) or exit(3). |
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| 227 | signal, //< The process terminated due to receipt of a signal. |
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| 228 | stopped //< The process has not terminated, but has stopped and can be restarted. |
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| 229 | }; |
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[a136346] | 230 | |
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[ec24a37] | 231 | types type; //< Type of status. |
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| 232 | int code; //< The status code returned. |
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| 233 | }; |
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| 234 | |
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| 235 | /** |
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| 236 | * Execute a process and capture stdout and stderr. The first element is |
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| 237 | * the program name to run. Return an error code. |
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| 238 | */ |
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[a136346] | 239 | status execute (const std::string& pname, |
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[ec24a37] | 240 | const arg_container& args, |
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| 241 | const std::string& outname, |
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| 242 | const std::string& errname); |
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| 243 | |
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| 244 | /** |
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| 245 | * Execute a process and capture stdout and stderr given a command line |
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| 246 | * string. Return an error code. |
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| 247 | */ |
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[a136346] | 248 | status execute (const std::string& pname, |
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[ec24a37] | 249 | const std::string& command, |
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| 250 | const std::string& outname, |
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| 251 | const std::string& errname); |
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| 252 | |
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| 253 | /** |
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| 254 | * Parse a command line into arguments. It support quoting. |
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| 255 | */ |
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| 256 | void parse_command_line (const std::string& command, arg_container& args); |
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| 257 | } |
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| 258 | } |
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| 259 | |
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| 260 | #endif |
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