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 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <errno.h> |
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22 | #include <fcntl.h> |
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23 | #include <stdio.h> |
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24 | #include <string.h> |
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25 | #include <sys/stat.h> |
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26 | |
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27 | #include <rld.h> |
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28 | |
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29 | #if __WIN32__ |
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30 | #define CREATE_MODE (S_IRUSR | S_IWUSR) |
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31 | #define OPEN_FLAGS (O_BINARY) |
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32 | #else |
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33 | #define CREATE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH) |
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34 | #define OPEN_FLAGS (0) |
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35 | #endif |
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36 | |
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37 | namespace rld |
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38 | { |
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39 | namespace files |
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40 | { |
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41 | /** |
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42 | * Scan the decimal number returning the value found. |
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43 | */ |
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44 | uint64_t |
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45 | scan_decimal (const uint8_t* string, size_t len) |
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46 | { |
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47 | uint64_t value = 0; |
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48 | |
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49 | while (len && (*string != ' ')) |
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50 | { |
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51 | value *= 10; |
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52 | value += *string - '0'; |
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53 | ++string; |
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54 | --len; |
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55 | } |
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56 | |
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57 | return value; |
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58 | } |
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59 | |
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60 | void |
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61 | set_number (uint32_t value, uint8_t* string, size_t len, bool octal = false) |
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62 | { |
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63 | std::ostringstream oss; |
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64 | if (octal) |
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65 | oss << std::oct; |
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66 | oss << value; |
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67 | size_t l = oss.str ().length (); |
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68 | if (l > len) |
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69 | l = len; |
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70 | memcpy (string, oss.str ().c_str (), l); |
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71 | } |
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72 | |
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73 | std::string |
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74 | basename (const std::string& name) |
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75 | { |
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76 | size_t b = name.find_last_of (RLD_PATH_SEPARATOR); |
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77 | if (b != std::string::npos) |
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78 | return name.substr (b + 1); |
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79 | return name; |
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80 | } |
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81 | |
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82 | std::string |
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83 | dirname (const std::string& name) |
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84 | { |
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85 | size_t b = name.find_last_of (RLD_PATH_SEPARATOR); |
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86 | if (b != std::string::npos) |
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87 | return name.substr (0, b - 1); |
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88 | return name; |
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89 | } |
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90 | |
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91 | std::string |
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92 | extension (const std::string& name) |
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93 | { |
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94 | size_t b = name.find_last_of ('.'); |
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95 | if (b != std::string::npos) |
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96 | return name.substr (b); |
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97 | return name; |
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98 | } |
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99 | |
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100 | void |
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101 | path_split (const std::string& path, rld::files::paths& paths) |
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102 | { |
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103 | strings ps; |
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104 | rld::split (path, ps, RLD_PATHSTR_SEPARATOR); |
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105 | if (ps.size ()) |
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106 | { |
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107 | for (strings::iterator psi = ps.begin (); |
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108 | psi != ps.end (); |
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109 | ++psi) |
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110 | { |
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111 | if (check_directory (*psi)) |
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112 | paths.push_back (*psi); |
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113 | } |
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114 | } |
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115 | } |
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116 | |
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117 | void |
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118 | path_join (const std::string& path_, const std::string& file_, std::string& joined) |
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119 | { |
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120 | if ((path_[path_.size () - 1] != RLD_PATH_SEPARATOR) && |
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121 | (file_[0] != RLD_PATH_SEPARATOR)) |
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122 | joined = path_ + RLD_PATH_SEPARATOR + file_; |
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123 | else if ((path_[path_.size () - 1] == RLD_PATH_SEPARATOR) && |
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124 | (file_[0] == RLD_PATH_SEPARATOR)) |
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125 | joined = path_ + &file_[1]; |
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126 | else |
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127 | joined = path_ + file_; |
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128 | } |
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129 | |
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130 | bool |
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131 | check_file (const std::string& path) |
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132 | { |
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133 | struct stat sb; |
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134 | if (::stat (path.c_str (), &sb) == 0) |
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135 | if (S_ISREG (sb.st_mode)) |
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136 | return true; |
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137 | return false; |
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138 | } |
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139 | |
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140 | bool |
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141 | check_directory (const std::string& path) |
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142 | { |
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143 | struct stat sb; |
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144 | if (::stat (path.c_str (), &sb) == 0) |
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145 | if (S_ISDIR (sb.st_mode)) |
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146 | return true; |
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147 | return false; |
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148 | } |
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149 | |
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150 | void |
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151 | find_file (std::string& path, const std::string& name, paths& search_paths) |
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152 | { |
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153 | for (rld::files::paths::iterator pi = search_paths.begin (); |
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154 | pi != search_paths.end (); |
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155 | ++pi) |
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156 | { |
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157 | path_join (*pi, name, path); |
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158 | if (check_file (path)) |
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159 | return; |
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160 | } |
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161 | path.clear (); |
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162 | } |
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163 | |
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164 | file::file (const std::string& aname, |
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165 | const std::string& oname, |
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166 | off_t offset, |
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167 | size_t size) |
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168 | : aname_ (aname), |
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169 | oname_ (oname), |
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170 | offset_ (offset), |
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171 | size_ (size) |
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172 | { |
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173 | } |
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174 | |
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175 | file::file (const std::string& path, bool is_object) |
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176 | : offset_ (0), |
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177 | size_ (0) |
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178 | { |
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179 | set (path, is_object); |
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180 | } |
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181 | |
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182 | file::file () |
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183 | : offset_ (0), |
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184 | size_ (0) |
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185 | { |
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186 | } |
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187 | |
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188 | void |
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189 | file::set (const std::string& path, bool is_object) |
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190 | { |
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191 | /* |
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192 | * If there is a path look for a colon. If there is no colon we assume |
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193 | * it is an object file. If the colon is the last character in the path |
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194 | * it is just an archive. |
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195 | */ |
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196 | if (!path.empty ()) |
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197 | { |
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198 | bool get_size = false; |
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199 | if (is_object) |
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200 | { |
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201 | size_t colon = path.find_last_of (':'); |
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202 | if ((colon != std::string::npos) && (colon > RLD_DRIVE_SEPARATOR)) |
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203 | { |
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204 | aname_ = path.substr (0, colon - 1); |
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205 | oname_ = path.substr (colon + 1); |
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206 | // @todo Add offset scanning. |
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207 | } |
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208 | else |
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209 | { |
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210 | oname_ = path; |
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211 | get_size = true; |
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212 | } |
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213 | } |
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214 | else |
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215 | { |
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216 | aname_ = path; |
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217 | get_size = true; |
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218 | } |
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219 | |
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220 | if (get_size) |
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221 | { |
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222 | struct stat sb; |
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223 | if (::stat (path.c_str (), &sb) == 0) |
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224 | size_ = sb.st_size; |
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225 | } |
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226 | } |
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227 | } |
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228 | |
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229 | bool |
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230 | file::is_archive () const |
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231 | { |
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232 | return !aname_.empty () && oname_.empty (); |
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233 | } |
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234 | |
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235 | bool |
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236 | file::is_object () const |
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237 | { |
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238 | return !oname_.empty (); |
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239 | } |
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240 | |
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241 | bool |
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242 | file::is_valid () const |
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243 | { |
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244 | return !aname_.empty () || ~oname_.empty (); |
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245 | } |
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246 | |
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247 | bool |
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248 | file::exists () const |
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249 | { |
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250 | /* |
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251 | * No name set returns false. |
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252 | */ |
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253 | bool result = false; |
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254 | const std::string p = path (); |
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255 | if (!p.empty ()) |
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256 | result = check_file (p); |
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257 | return result; |
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258 | } |
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259 | |
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260 | const std::string |
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261 | file::path () const |
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262 | { |
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263 | if (!aname_.empty ()) |
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264 | return aname_; |
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265 | return oname_; |
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266 | } |
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267 | |
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268 | const std::string |
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269 | file::full () const |
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270 | { |
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271 | std::string f; |
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272 | if (!aname_.empty ()) |
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273 | { |
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274 | f = aname_; |
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275 | if (!oname_.empty ()) |
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276 | f += ':'; |
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277 | } |
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278 | if (!oname_.empty ()) |
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279 | f += oname_; |
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280 | if (!aname_.empty () && !oname_.empty ()) |
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281 | f += '@' + rld::to_string (offset_); |
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282 | return f; |
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283 | } |
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284 | |
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285 | const std::string |
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286 | file::basename () const |
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287 | { |
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288 | return rld::files::basename (full ()); |
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289 | } |
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290 | |
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291 | const std::string& |
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292 | file::aname () const |
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293 | { |
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294 | return aname_; |
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295 | } |
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296 | |
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297 | const std::string& |
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298 | file::oname () const |
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299 | { |
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300 | return oname_; |
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301 | } |
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302 | |
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303 | off_t |
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304 | file::offset () const |
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305 | { |
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306 | return offset_; |
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307 | } |
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308 | |
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309 | size_t |
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310 | file::size () const |
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311 | { |
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312 | return size_; |
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313 | } |
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314 | |
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315 | image::image (file& name) |
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316 | : name_ (name), |
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317 | references_ (0), |
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318 | fd_ (-1) |
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319 | { |
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320 | } |
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321 | |
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322 | image::image (const std::string& path, bool is_object) |
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323 | : name_ (path, is_object), |
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324 | references_ (0), |
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325 | fd_ (-1), |
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326 | symbol_refs (0), |
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327 | writable (false) |
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328 | { |
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329 | } |
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330 | |
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331 | image::image () |
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332 | : references_ (0), |
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333 | fd_ (-1), |
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334 | symbol_refs (0) |
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335 | { |
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336 | } |
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337 | |
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338 | image::~image () |
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339 | { |
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340 | if (references_) |
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341 | throw rld_error_at ("references when destructing image"); |
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342 | if (fd_ >= 0) |
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343 | ::close (fd_); |
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344 | } |
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345 | |
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346 | void |
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347 | image::open (file& name) |
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348 | { |
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349 | name_ = name; |
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350 | open (); |
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351 | } |
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352 | |
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353 | void |
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354 | image::open (bool writable_) |
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355 | { |
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356 | const std::string path = name_.path (); |
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357 | |
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358 | if (path.empty ()) |
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359 | throw rld::error ("No file name", "open:" + path); |
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360 | |
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361 | if (rld::verbose () >= RLD_VERBOSE_DETAILS) |
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362 | std::cout << "image::open: " << name (). full () |
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363 | << " writable:" << (char*) (writable_ ? "yes" : "no") |
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364 | << " refs:" << references_ + 1 << std::endl; |
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365 | |
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366 | if (fd_ < 0) |
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367 | { |
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368 | writable = writable_; |
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369 | |
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370 | if (writable) |
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371 | fd_ = ::open (path.c_str (), OPEN_FLAGS | O_RDWR | O_CREAT | O_TRUNC, CREATE_MODE); |
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372 | else |
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373 | fd_ = ::open (path.c_str (), OPEN_FLAGS | O_RDONLY); |
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374 | if (fd_ < 0) |
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375 | throw rld::error (::strerror (errno), "open:" + path); |
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376 | } |
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377 | else |
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378 | { |
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379 | if (writable_ != writable) |
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380 | throw rld::error ("Cannot change write status", "open:" + path); |
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381 | } |
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382 | |
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383 | ++references_; |
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384 | } |
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385 | |
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386 | void |
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387 | image::close () |
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388 | { |
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389 | if (references_ > 0) |
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390 | { |
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391 | if (rld::verbose () >= RLD_VERBOSE_DETAILS) |
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392 | std::cout << "image::close: " << name ().full () |
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393 | << " refs:" << references_ << std::endl; |
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394 | |
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395 | --references_; |
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396 | if (references_ == 0) |
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397 | { |
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398 | ::close (fd_); |
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399 | fd_ = -1; |
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400 | } |
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401 | } |
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402 | } |
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403 | |
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404 | ssize_t |
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405 | image::read (uint8_t* buffer, size_t size) |
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406 | { |
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407 | ssize_t rsize = ::read (fd (), buffer, size); |
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408 | if (rsize < 0) |
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409 | throw rld::error (strerror (errno), "read:" + name ().path ()); |
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410 | return rsize; |
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411 | } |
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412 | |
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413 | ssize_t |
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414 | image::write (const void* buffer, size_t size) |
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415 | { |
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416 | ssize_t wsize = ::write (fd (), buffer, size); |
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417 | if (wsize < 0) |
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418 | throw rld::error (strerror (errno), "write:" + name ().path ()); |
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419 | return wsize; |
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420 | } |
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421 | |
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422 | void |
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423 | image::seek (off_t offset) |
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424 | { |
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425 | if (::lseek (fd (), name_.offset () + offset, SEEK_SET) < 0) |
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426 | throw rld::error (strerror (errno), "lseek:" + name ().path ()); |
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427 | } |
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428 | |
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429 | bool |
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430 | image::seek_read (off_t offset, uint8_t* buffer, size_t size) |
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431 | { |
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432 | seek (offset); |
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433 | return size == (size_t) read (buffer, size); |
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434 | } |
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435 | |
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436 | bool |
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437 | image::seek_write (off_t offset, const void* buffer, size_t size) |
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438 | { |
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439 | seek (offset); |
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440 | return size == (size_t) write (buffer, size); |
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441 | } |
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442 | |
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443 | const file& |
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444 | image::name () const |
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445 | { |
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446 | return name_; |
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447 | } |
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448 | |
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449 | int |
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450 | image::references () const |
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451 | { |
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452 | return references_; |
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453 | } |
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454 | |
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455 | size_t |
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456 | image::size () const |
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457 | { |
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458 | return name ().size (); |
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459 | } |
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460 | |
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461 | int |
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462 | image::fd () const |
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463 | { |
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464 | return fd_; |
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465 | } |
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466 | |
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467 | rld::elf::file& |
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468 | image::elf () |
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469 | { |
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470 | return elf_; |
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471 | } |
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472 | |
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473 | void |
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474 | image::symbol_referenced () |
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475 | { |
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476 | ++symbol_refs; |
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477 | } |
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478 | |
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479 | int |
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480 | image::symbol_references () const |
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481 | { |
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482 | return symbol_refs; |
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483 | } |
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484 | |
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485 | void |
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486 | copy_file (image& in, image& out, size_t size) |
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487 | { |
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488 | #define COPY_FILE_BUFFER_SIZE (8 * 1024) |
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489 | uint8_t* buffer = 0; |
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490 | try |
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491 | { |
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492 | buffer = new uint8_t[COPY_FILE_BUFFER_SIZE]; |
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493 | while (size) |
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494 | { |
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495 | /* |
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496 | * @fixme the reading and writing are not POSIX; sigints could split them. |
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497 | */ |
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498 | |
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499 | size_t l = size < COPY_FILE_BUFFER_SIZE ? size : COPY_FILE_BUFFER_SIZE; |
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500 | ssize_t r = ::read (in.fd (), buffer, l); |
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501 | |
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502 | if (r < 0) |
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503 | throw rld::error (::strerror (errno), "reading: " + in.name ().full ()); |
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504 | |
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505 | if (r == 0) |
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506 | { |
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507 | std::ostringstream oss; |
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508 | oss << "reading: " + in.name ().full () << " (" << size << ')'; |
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509 | throw rld::error ("input too short", oss.str ()); |
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510 | } |
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511 | |
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512 | ssize_t w = ::write (out.fd (), buffer, r); |
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513 | |
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514 | if (w < 0) |
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515 | throw rld::error (::strerror (errno), "writing: " + out.name ().full ()); |
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516 | |
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517 | if (w != r) |
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518 | throw rld::error ("output trucated", "writing: " + out.name ().full ()); |
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519 | |
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520 | size -= r; |
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521 | } |
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522 | } |
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523 | catch (...) |
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524 | { |
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525 | delete [] buffer; |
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526 | throw; |
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527 | } |
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528 | |
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529 | if (buffer) |
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530 | delete [] buffer; |
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531 | } |
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532 | |
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533 | /** |
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534 | * Defines for the header of an archive. |
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535 | */ |
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536 | #define rld_archive_ident "!<arch>\n" |
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537 | #define rld_archive_ident_size (sizeof (rld_archive_ident) - 1) |
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538 | #define rld_archive_fhdr_base rld_archive_ident_size |
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539 | #define rld_archive_fname (0) |
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540 | #define rld_archive_fname_size (16) |
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541 | #define rld_archive_mtime (16) |
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542 | #define rld_archive_mtime_size (12) |
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543 | #define rld_archive_uid (28) |
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544 | #define rld_archive_uid_size (6) |
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545 | #define rld_archive_gid (34) |
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546 | #define rld_archive_gid_size (6) |
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547 | #define rld_archive_mode (40) |
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548 | #define rld_archive_mode_size (8) |
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549 | #define rld_archive_size (48) |
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550 | #define rld_archive_size_size (10) |
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551 | #define rld_archive_magic (58) |
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552 | #define rld_archive_magic_size (2) |
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553 | #define rld_archive_fhdr_size (60) |
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554 | #define rld_archive_max_file_size (1024) |
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555 | |
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556 | archive::archive (const std::string& path) |
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557 | : image (path, false) |
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558 | { |
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559 | if (!name ().is_valid ()) |
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560 | throw rld_error_at ("name is empty"); |
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561 | if (!name ().is_archive ()) |
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562 | throw rld_error_at ("name is not an archive: " + name ().oname ()); |
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563 | } |
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564 | |
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565 | archive::~archive () |
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566 | { |
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567 | end (); |
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568 | close (); |
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569 | } |
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570 | |
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571 | void |
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572 | archive::begin () |
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573 | { |
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574 | if (references () == 1) |
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575 | { |
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576 | elf ().begin (name ().full (), fd ()); |
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577 | |
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578 | /* |
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579 | * Make sure it is an archive. |
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580 | */ |
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581 | if (!elf ().is_archive ()) |
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582 | throw rld::error ("Not an archive.", |
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583 | "archive-begin:" + name ().full ()); |
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584 | } |
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585 | } |
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586 | |
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587 | void |
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588 | archive::end () |
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589 | { |
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590 | if (references () == 1) |
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591 | elf ().end (); |
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592 | } |
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593 | |
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594 | bool |
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595 | archive::is (const std::string& path) const |
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596 | { |
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597 | return name ().path () == path; |
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598 | } |
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599 | |
---|
600 | bool |
---|
601 | archive::is_valid () |
---|
602 | { |
---|
603 | open (); |
---|
604 | uint8_t header[rld_archive_ident_size]; |
---|
605 | seek_read (0, &header[0], rld_archive_ident_size); |
---|
606 | bool result = ::memcmp (header, rld_archive_ident, |
---|
607 | rld_archive_ident_size) == 0 ? true : false; |
---|
608 | close (); |
---|
609 | return result; |
---|
610 | } |
---|
611 | |
---|
612 | void |
---|
613 | archive::load_objects (objects& objs) |
---|
614 | { |
---|
615 | off_t extended_file_names = 0; |
---|
616 | off_t offset = rld_archive_fhdr_base; |
---|
617 | size_t size = 0; |
---|
618 | |
---|
619 | while (true) |
---|
620 | { |
---|
621 | uint8_t header[rld_archive_fhdr_size]; |
---|
622 | |
---|
623 | if (!read_header (offset, &header[0])) |
---|
624 | break; |
---|
625 | |
---|
626 | /* |
---|
627 | * The archive file headers are always aligned to an even address. |
---|
628 | */ |
---|
629 | size = |
---|
630 | (scan_decimal (&header[rld_archive_size], |
---|
631 | rld_archive_size_size) + 1) & ~1; |
---|
632 | |
---|
633 | /* |
---|
634 | * Check for the GNU extensions. |
---|
635 | */ |
---|
636 | if (header[0] == '/') |
---|
637 | { |
---|
638 | off_t extended_off; |
---|
639 | |
---|
640 | switch (header[1]) |
---|
641 | { |
---|
642 | case ' ': |
---|
643 | /* |
---|
644 | * Symbols table. Ignore the table. |
---|
645 | */ |
---|
646 | break; |
---|
647 | case '/': |
---|
648 | /* |
---|
649 | * Extended file names table. Remember. |
---|
650 | */ |
---|
651 | extended_file_names = offset + rld_archive_fhdr_size; |
---|
652 | break; |
---|
653 | case '0': |
---|
654 | case '1': |
---|
655 | case '2': |
---|
656 | case '3': |
---|
657 | case '4': |
---|
658 | case '5': |
---|
659 | case '6': |
---|
660 | case '7': |
---|
661 | case '8': |
---|
662 | case '9': |
---|
663 | /* |
---|
664 | * Offset into the extended file name table. If we do not have the |
---|
665 | * offset to the extended file name table find it. |
---|
666 | */ |
---|
667 | extended_off = scan_decimal (&header[1], rld_archive_fname_size); |
---|
668 | |
---|
669 | if (extended_file_names == 0) |
---|
670 | { |
---|
671 | off_t off = offset; |
---|
672 | while (extended_file_names == 0) |
---|
673 | { |
---|
674 | size_t esize = |
---|
675 | (scan_decimal (&header[rld_archive_size], |
---|
676 | rld_archive_size_size) + 1) & ~1; |
---|
677 | off += esize + rld_archive_fhdr_size; |
---|
678 | |
---|
679 | if (!read_header (off, &header[0])) |
---|
680 | throw rld::error ("No GNU extended file name section found", |
---|
681 | "get-names:" + name ().path ()); |
---|
682 | |
---|
683 | if ((header[0] == '/') && (header[1] == '/')) |
---|
684 | { |
---|
685 | extended_file_names = off + rld_archive_fhdr_size; |
---|
686 | break; |
---|
687 | } |
---|
688 | } |
---|
689 | } |
---|
690 | |
---|
691 | if (extended_file_names) |
---|
692 | { |
---|
693 | /* |
---|
694 | * We know the offset in the archive to the extended file. Read |
---|
695 | * the name from the table and compare with the name we are |
---|
696 | * after. |
---|
697 | */ |
---|
698 | char cname[rld_archive_max_file_size]; |
---|
699 | seek_read (extended_file_names + extended_off, |
---|
700 | (uint8_t*) &cname[0], rld_archive_max_file_size); |
---|
701 | add_object (objs, cname, |
---|
702 | offset + rld_archive_fhdr_size, size); |
---|
703 | } |
---|
704 | break; |
---|
705 | default: |
---|
706 | /* |
---|
707 | * Ignore the file because we do not know what it it. |
---|
708 | */ |
---|
709 | break; |
---|
710 | } |
---|
711 | } |
---|
712 | else |
---|
713 | { |
---|
714 | /* |
---|
715 | * Normal archive name. |
---|
716 | */ |
---|
717 | add_object (objs, |
---|
718 | (char*) &header[rld_archive_fname], |
---|
719 | offset + rld_archive_fhdr_size, size); |
---|
720 | } |
---|
721 | |
---|
722 | offset += size + rld_archive_fhdr_size; |
---|
723 | } |
---|
724 | } |
---|
725 | |
---|
726 | bool |
---|
727 | archive::operator< (const archive& rhs) const |
---|
728 | { |
---|
729 | return name ().path () < rhs.name ().path (); |
---|
730 | } |
---|
731 | |
---|
732 | bool |
---|
733 | archive::read_header (off_t offset, uint8_t* header) |
---|
734 | { |
---|
735 | if (!seek_read (offset, header, rld_archive_fhdr_size)) |
---|
736 | return false; |
---|
737 | |
---|
738 | if ((header[rld_archive_magic] != 0x60) || |
---|
739 | (header[rld_archive_magic + 1] != 0x0a)) |
---|
740 | throw rld::error ("Invalid header magic numbers at " + |
---|
741 | rld::to_string (offset), "read-header:" + name ().path ()); |
---|
742 | |
---|
743 | return true; |
---|
744 | } |
---|
745 | |
---|
746 | void |
---|
747 | archive::add_object (objects& objs, const char* path, off_t offset, size_t size) |
---|
748 | { |
---|
749 | const char* end = path; |
---|
750 | while ((*end != '\0') && (*end != '/')) |
---|
751 | ++end; |
---|
752 | |
---|
753 | std::string str; |
---|
754 | str.append (path, end - path); |
---|
755 | |
---|
756 | if (rld::verbose () >= RLD_VERBOSE_FULL_DEBUG) |
---|
757 | std::cout << "archive::add-object: " << str << std::endl; |
---|
758 | |
---|
759 | file n (name ().path (), str, offset, size); |
---|
760 | objs[n.full()] = new object (*this, n); |
---|
761 | } |
---|
762 | |
---|
763 | void |
---|
764 | archive::write_header (const std::string& name, |
---|
765 | uint32_t mtime, |
---|
766 | int uid, |
---|
767 | int gid, |
---|
768 | int mode, |
---|
769 | size_t size) |
---|
770 | { |
---|
771 | uint8_t header[rld_archive_fhdr_size]; |
---|
772 | |
---|
773 | memset (header, ' ', sizeof (header)); |
---|
774 | |
---|
775 | size_t len = name.length (); |
---|
776 | if (len > rld_archive_fname_size) |
---|
777 | len = rld_archive_fname_size; |
---|
778 | memcpy (&header[rld_archive_fname], &name[0], len); |
---|
779 | |
---|
780 | set_number (mtime, header + rld_archive_mtime, rld_archive_mtime_size); |
---|
781 | set_number (uid, header + rld_archive_uid, rld_archive_uid_size); |
---|
782 | set_number (gid, header + rld_archive_gid, rld_archive_gid_size); |
---|
783 | set_number (mode, header + rld_archive_mode, rld_archive_mode_size, true); |
---|
784 | set_number (size, header + rld_archive_size, rld_archive_size_size); |
---|
785 | |
---|
786 | header[rld_archive_magic] = 0x60; |
---|
787 | header[rld_archive_magic + 1] = 0x0a; |
---|
788 | |
---|
789 | write (header, sizeof (header)); |
---|
790 | } |
---|
791 | |
---|
792 | void |
---|
793 | archive::create (object_list& objects) |
---|
794 | { |
---|
795 | open (true); |
---|
796 | |
---|
797 | try |
---|
798 | { |
---|
799 | seek_write (0, rld_archive_ident, rld_archive_ident_size); |
---|
800 | |
---|
801 | /* |
---|
802 | * GNU extended filenames. |
---|
803 | */ |
---|
804 | std::string extended_file_names; |
---|
805 | |
---|
806 | for (object_list::iterator oi = objects.begin (); |
---|
807 | oi != objects.end (); |
---|
808 | ++oi) |
---|
809 | { |
---|
810 | object& obj = *(*oi); |
---|
811 | const std::string& oname = basename (obj.name ().oname ()); |
---|
812 | if (oname.length () > rld_archive_fname_size) |
---|
813 | extended_file_names += oname + '\n'; |
---|
814 | } |
---|
815 | |
---|
816 | if (!extended_file_names.empty ()) |
---|
817 | { |
---|
818 | write_header ("//", 0, 0, 0, 0, extended_file_names.length ()); |
---|
819 | write (extended_file_names.c_str (), extended_file_names.length ()); |
---|
820 | } |
---|
821 | |
---|
822 | for (object_list::iterator oi = objects.begin (); |
---|
823 | oi != objects.end (); |
---|
824 | ++oi) |
---|
825 | { |
---|
826 | object& obj = *(*oi); |
---|
827 | |
---|
828 | obj.open (); |
---|
829 | |
---|
830 | try |
---|
831 | { |
---|
832 | std::string oname = basename (obj.name ().oname ()); |
---|
833 | |
---|
834 | /* |
---|
835 | * Convert the file name to an offset into the extended file name |
---|
836 | * table if the file name is too long for the header. |
---|
837 | */ |
---|
838 | |
---|
839 | if (oname.length () > rld_archive_fname_size) |
---|
840 | { |
---|
841 | size_t pos = extended_file_names.find_first_of (oname + '\n'); |
---|
842 | if (pos == std::string::npos) |
---|
843 | throw rld_error_at ("extended file name not found"); |
---|
844 | std::ostringstream oss; |
---|
845 | oss << '/' << pos; |
---|
846 | oname = oss.str (); |
---|
847 | } |
---|
848 | |
---|
849 | write_header (oname, 0, 0, 0, 0666, obj.name ().size ()); |
---|
850 | obj.seek (0); |
---|
851 | copy_file (obj, *this, obj.name ().size ()); |
---|
852 | } |
---|
853 | catch (...) |
---|
854 | { |
---|
855 | obj.close (); |
---|
856 | throw; |
---|
857 | } |
---|
858 | |
---|
859 | obj.close (); |
---|
860 | } |
---|
861 | } |
---|
862 | catch (...) |
---|
863 | { |
---|
864 | close (); |
---|
865 | throw; |
---|
866 | } |
---|
867 | |
---|
868 | close (); |
---|
869 | } |
---|
870 | |
---|
871 | object::object (archive& archive_, file& name_) |
---|
872 | : image (name_), |
---|
873 | archive_ (&archive_) |
---|
874 | { |
---|
875 | if (!name ().is_valid ()) |
---|
876 | throw rld_error_at ("name is empty"); |
---|
877 | } |
---|
878 | |
---|
879 | object::object (const std::string& path) |
---|
880 | : image (path), |
---|
881 | archive_ (0) |
---|
882 | { |
---|
883 | if (!name ().is_valid ()) |
---|
884 | throw rld_error_at ("name is empty"); |
---|
885 | } |
---|
886 | |
---|
887 | object::object () |
---|
888 | : archive_ (0) |
---|
889 | { |
---|
890 | } |
---|
891 | |
---|
892 | object::~object () |
---|
893 | { |
---|
894 | end (); |
---|
895 | close (); |
---|
896 | } |
---|
897 | |
---|
898 | void |
---|
899 | object::open (bool writable) |
---|
900 | { |
---|
901 | if (archive_) |
---|
902 | { |
---|
903 | if (writable) |
---|
904 | throw rld_error_at ("object files in archives are not writable"); |
---|
905 | archive_->open (); |
---|
906 | } |
---|
907 | else |
---|
908 | image::open (writable); |
---|
909 | } |
---|
910 | |
---|
911 | void |
---|
912 | object::close () |
---|
913 | { |
---|
914 | if (archive_) |
---|
915 | { |
---|
916 | archive_->end (); |
---|
917 | archive_->close (); |
---|
918 | } |
---|
919 | else |
---|
920 | { |
---|
921 | end (); |
---|
922 | image::close (); |
---|
923 | } |
---|
924 | } |
---|
925 | |
---|
926 | void |
---|
927 | object::begin () |
---|
928 | { |
---|
929 | /* |
---|
930 | * Begin a session. |
---|
931 | */ |
---|
932 | if (archive_) |
---|
933 | elf ().begin (name ().full (), archive_->elf(), name ().offset ()); |
---|
934 | else |
---|
935 | elf ().begin (name ().full (), fd (), is_writable ()); |
---|
936 | |
---|
937 | /* |
---|
938 | * Cannot be an archive. |
---|
939 | */ |
---|
940 | if (elf ().is_archive ()) |
---|
941 | throw rld::error ("Is an archive not an object file.", |
---|
942 | "object-begin:" + name ().full ()); |
---|
943 | |
---|
944 | /* |
---|
945 | * We only support executable or relocatable ELF files. |
---|
946 | */ |
---|
947 | if (!is_writable ()) |
---|
948 | { |
---|
949 | if (!elf ().is_executable () && !elf ().is_relocatable ()) |
---|
950 | throw rld::error ("Invalid ELF type (only ET_EXEC/ET_REL supported).", |
---|
951 | "object-begin:" + name ().full ()); |
---|
952 | elf::check_file (elf ()); |
---|
953 | } |
---|
954 | } |
---|
955 | |
---|
956 | void |
---|
957 | object::end () |
---|
958 | { |
---|
959 | elf ().end (); |
---|
960 | } |
---|
961 | |
---|
962 | void |
---|
963 | object::load_symbols (rld::symbols::table& symbols, bool local) |
---|
964 | { |
---|
965 | if (rld::verbose () >= RLD_VERBOSE_DETAILS) |
---|
966 | std::cout << "object:load-sym: " << name ().full () << std::endl; |
---|
967 | |
---|
968 | rld::symbols::pointers syms; |
---|
969 | |
---|
970 | elf ().get_symbols (syms, false, local); |
---|
971 | |
---|
972 | if (rld::verbose () >= RLD_VERBOSE_DETAILS) |
---|
973 | std::cout << "object:load-sym: exported: total " |
---|
974 | << syms.size () << std::endl; |
---|
975 | |
---|
976 | for (symbols::pointers::iterator si = syms.begin (); |
---|
977 | si != syms.end (); |
---|
978 | ++si) |
---|
979 | { |
---|
980 | symbols::symbol& sym = *(*si); |
---|
981 | |
---|
982 | if (rld::verbose () >= RLD_VERBOSE_DETAILS) |
---|
983 | { |
---|
984 | std::cout << "object:load-sym: exported: "; |
---|
985 | sym.output (std::cout); |
---|
986 | std::cout << std::endl; |
---|
987 | } |
---|
988 | |
---|
989 | sym.set_object (*this); |
---|
990 | symbols[sym.name ()] = &sym; |
---|
991 | externals.push_back (&sym); |
---|
992 | } |
---|
993 | |
---|
994 | elf ().get_symbols (syms, true); |
---|
995 | |
---|
996 | if (rld::verbose () >= RLD_VERBOSE_DETAILS) |
---|
997 | std::cout << "object:load-sym: unresolved: total " |
---|
998 | << syms.size () << std::endl; |
---|
999 | |
---|
1000 | for (symbols::pointers::iterator si = syms.begin (); |
---|
1001 | si != syms.end (); |
---|
1002 | ++si) |
---|
1003 | { |
---|
1004 | symbols::symbol& sym = *(*si); |
---|
1005 | |
---|
1006 | if (rld::verbose () >= RLD_VERBOSE_DETAILS) |
---|
1007 | { |
---|
1008 | std::cout << "object:load-sym: unresolved: "; |
---|
1009 | sym.output (std::cout); |
---|
1010 | std::cout << std::endl; |
---|
1011 | } |
---|
1012 | |
---|
1013 | unresolved[sym.name ()] = &sym; |
---|
1014 | } |
---|
1015 | } |
---|
1016 | |
---|
1017 | int |
---|
1018 | object::references () const |
---|
1019 | { |
---|
1020 | if (archive_) |
---|
1021 | return archive_->references (); |
---|
1022 | return image::references (); |
---|
1023 | } |
---|
1024 | |
---|
1025 | size_t |
---|
1026 | object::size () const |
---|
1027 | { |
---|
1028 | if (archive_) |
---|
1029 | return archive_->size (); |
---|
1030 | return image::size (); |
---|
1031 | } |
---|
1032 | |
---|
1033 | int |
---|
1034 | object::fd () const |
---|
1035 | { |
---|
1036 | if (archive_) |
---|
1037 | return archive_->fd (); |
---|
1038 | return image::fd (); |
---|
1039 | } |
---|
1040 | |
---|
1041 | void |
---|
1042 | object::symbol_referenced () |
---|
1043 | { |
---|
1044 | image::symbol_referenced (); |
---|
1045 | if (archive_) |
---|
1046 | archive_->symbol_referenced (); |
---|
1047 | } |
---|
1048 | |
---|
1049 | archive* |
---|
1050 | object::get_archive () |
---|
1051 | { |
---|
1052 | return archive_; |
---|
1053 | } |
---|
1054 | |
---|
1055 | #if 0 |
---|
1056 | int |
---|
1057 | object::sections () const |
---|
1058 | { |
---|
1059 | return ehdr.e_shnum; |
---|
1060 | } |
---|
1061 | |
---|
1062 | int |
---|
1063 | object::section_strings () const |
---|
1064 | { |
---|
1065 | return ehdr.e_shstrndx; |
---|
1066 | } |
---|
1067 | #endif |
---|
1068 | |
---|
1069 | rld::symbols::table& |
---|
1070 | object::unresolved_symbols () |
---|
1071 | { |
---|
1072 | return unresolved; |
---|
1073 | } |
---|
1074 | |
---|
1075 | rld::symbols::pointers& |
---|
1076 | object::external_symbols () |
---|
1077 | { |
---|
1078 | return externals; |
---|
1079 | } |
---|
1080 | |
---|
1081 | cache::cache () |
---|
1082 | : opened (false) |
---|
1083 | { |
---|
1084 | } |
---|
1085 | |
---|
1086 | cache::~cache () |
---|
1087 | { |
---|
1088 | close (); |
---|
1089 | } |
---|
1090 | |
---|
1091 | void |
---|
1092 | cache::open () |
---|
1093 | { |
---|
1094 | if (!opened) |
---|
1095 | { |
---|
1096 | collect_object_files (); |
---|
1097 | archives_begin (); |
---|
1098 | opened = true; |
---|
1099 | } |
---|
1100 | } |
---|
1101 | |
---|
1102 | void |
---|
1103 | cache::close () |
---|
1104 | { |
---|
1105 | if (opened) |
---|
1106 | { |
---|
1107 | /* |
---|
1108 | * Must delete the object first as they could depend on archives. |
---|
1109 | */ |
---|
1110 | for (objects::iterator oi = objects_.begin (); oi != objects_.end (); ++oi) |
---|
1111 | delete (*oi).second; |
---|
1112 | for (archives::iterator ai = archives_.begin (); ai != archives_.end (); ++ai) |
---|
1113 | delete (*ai).second; |
---|
1114 | opened = false; |
---|
1115 | } |
---|
1116 | } |
---|
1117 | |
---|
1118 | void |
---|
1119 | cache::add (const std::string& path) |
---|
1120 | { |
---|
1121 | paths_.push_back (path); |
---|
1122 | input (path); |
---|
1123 | } |
---|
1124 | |
---|
1125 | void |
---|
1126 | cache::add (paths& paths__) |
---|
1127 | { |
---|
1128 | for (paths::iterator pi = paths__.begin(); |
---|
1129 | pi != paths__.end(); |
---|
1130 | ++pi) |
---|
1131 | add (*pi); |
---|
1132 | } |
---|
1133 | |
---|
1134 | void |
---|
1135 | cache::add_libraries (paths& paths__) |
---|
1136 | { |
---|
1137 | for (paths::iterator pi = paths__.begin(); |
---|
1138 | pi != paths__.end(); |
---|
1139 | ++pi) |
---|
1140 | input (*pi); |
---|
1141 | } |
---|
1142 | |
---|
1143 | void |
---|
1144 | cache::archive_begin (const std::string& path) |
---|
1145 | { |
---|
1146 | archives::iterator ai = archives_.find (path); |
---|
1147 | if (ai != archives_.end ()) |
---|
1148 | { |
---|
1149 | archive* ar = (*ai).second; |
---|
1150 | if (!ar->is_open ()) |
---|
1151 | { |
---|
1152 | if (rld::verbose () >= RLD_VERBOSE_TRACE) |
---|
1153 | std::cout << "cache:archive-begin: " << path << std::endl; |
---|
1154 | ar->open (); |
---|
1155 | ar->begin (); |
---|
1156 | } |
---|
1157 | } |
---|
1158 | } |
---|
1159 | |
---|
1160 | void |
---|
1161 | cache::archive_end (const std::string& path) |
---|
1162 | { |
---|
1163 | archives::iterator ai = archives_.find (path); |
---|
1164 | if (ai != archives_.end ()) |
---|
1165 | { |
---|
1166 | archive* ar = (*ai).second; |
---|
1167 | if (ar->is_open ()) |
---|
1168 | { |
---|
1169 | if (rld::verbose () >= RLD_VERBOSE_TRACE) |
---|
1170 | std::cout << "cache:archive-end: " << path << std::endl; |
---|
1171 | ar->end (); |
---|
1172 | ar->close (); |
---|
1173 | } |
---|
1174 | } |
---|
1175 | } |
---|
1176 | |
---|
1177 | void |
---|
1178 | cache::archives_begin () |
---|
1179 | { |
---|
1180 | for (archives::iterator ai = archives_.begin (); ai != archives_.end (); ++ai) |
---|
1181 | archive_begin (((*ai).second)->path ()); |
---|
1182 | } |
---|
1183 | |
---|
1184 | void |
---|
1185 | cache::archives_end () |
---|
1186 | { |
---|
1187 | for (archives::iterator ai = archives_.begin (); ai != archives_.end (); ++ai) |
---|
1188 | archive_end (((*ai).second)->path ()); |
---|
1189 | } |
---|
1190 | |
---|
1191 | void |
---|
1192 | cache::collect_object_files () |
---|
1193 | { |
---|
1194 | for (paths::iterator ni = paths_.begin (); ni != paths_.end (); ++ni) |
---|
1195 | collect_object_files (*ni); |
---|
1196 | } |
---|
1197 | |
---|
1198 | void |
---|
1199 | cache::collect_object_files (const std::string& path) |
---|
1200 | { |
---|
1201 | archive* ar = new archive (path); |
---|
1202 | |
---|
1203 | if (ar->is_valid ()) |
---|
1204 | { |
---|
1205 | try |
---|
1206 | { |
---|
1207 | archives_[path] = ar; |
---|
1208 | ar->open (); |
---|
1209 | ar->load_objects (objects_); |
---|
1210 | ar->close (); |
---|
1211 | } |
---|
1212 | catch (...) |
---|
1213 | { |
---|
1214 | delete ar; |
---|
1215 | throw; |
---|
1216 | } |
---|
1217 | } |
---|
1218 | else |
---|
1219 | { |
---|
1220 | delete ar; |
---|
1221 | object* obj = new object (path); |
---|
1222 | if (!obj->name ().exists ()) |
---|
1223 | { |
---|
1224 | delete obj; |
---|
1225 | throw rld::error ("'" + path + "', Not found or a regular file.", |
---|
1226 | "file-check"); |
---|
1227 | } |
---|
1228 | try |
---|
1229 | { |
---|
1230 | obj->open (); |
---|
1231 | obj->begin (); |
---|
1232 | obj->end (); |
---|
1233 | obj->close (); |
---|
1234 | objects_[path] = obj; |
---|
1235 | } |
---|
1236 | catch (...) |
---|
1237 | { |
---|
1238 | delete obj; |
---|
1239 | throw; |
---|
1240 | } |
---|
1241 | } |
---|
1242 | } |
---|
1243 | |
---|
1244 | void |
---|
1245 | cache::load_symbols (rld::symbols::table& symbols, bool local) |
---|
1246 | { |
---|
1247 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
---|
1248 | std::cout << "cache:load-sym: object files: " << objects_.size () |
---|
1249 | << std::endl; |
---|
1250 | |
---|
1251 | try |
---|
1252 | { |
---|
1253 | archives_begin (); |
---|
1254 | for (objects::iterator oi = objects_.begin (); |
---|
1255 | oi != objects_.end (); |
---|
1256 | ++oi) |
---|
1257 | { |
---|
1258 | object* obj = (*oi).second; |
---|
1259 | obj->open (); |
---|
1260 | obj->begin (); |
---|
1261 | obj->load_symbols (symbols, local); |
---|
1262 | obj->end (); |
---|
1263 | obj->close (); |
---|
1264 | } |
---|
1265 | } |
---|
1266 | catch (...) |
---|
1267 | { |
---|
1268 | archives_end (); |
---|
1269 | throw; |
---|
1270 | } |
---|
1271 | |
---|
1272 | archives_end (); |
---|
1273 | |
---|
1274 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
---|
1275 | std::cout << "cache:load-sym: symbols: " << symbols.size () |
---|
1276 | << std::endl; |
---|
1277 | } |
---|
1278 | |
---|
1279 | void |
---|
1280 | cache::output_unresolved_symbols (std::ostream& out) |
---|
1281 | { |
---|
1282 | for (objects::iterator oi = objects_.begin (); |
---|
1283 | oi != objects_.end (); |
---|
1284 | ++oi) |
---|
1285 | { |
---|
1286 | object* obj = (*oi).second; |
---|
1287 | if (obj) |
---|
1288 | { |
---|
1289 | out << obj->name ().full () << ':' << std::endl; |
---|
1290 | rld::symbols::output (out, obj->unresolved_symbols ()); |
---|
1291 | } |
---|
1292 | } |
---|
1293 | } |
---|
1294 | |
---|
1295 | archives& |
---|
1296 | cache::get_archives () |
---|
1297 | { |
---|
1298 | return archives_; |
---|
1299 | } |
---|
1300 | |
---|
1301 | objects& |
---|
1302 | cache::get_objects () |
---|
1303 | { |
---|
1304 | return objects_; |
---|
1305 | } |
---|
1306 | |
---|
1307 | void |
---|
1308 | cache::get_objects (object_list& list) |
---|
1309 | { |
---|
1310 | list.clear (); |
---|
1311 | for (paths::iterator pi = paths_.begin (); |
---|
1312 | pi != paths_.end (); |
---|
1313 | ++pi) |
---|
1314 | { |
---|
1315 | objects::iterator oi = objects_.find (*pi); |
---|
1316 | if (oi == objects_.end ()) |
---|
1317 | throw rld_error_at ("path not found in objects"); |
---|
1318 | list.push_back ((*oi).second); |
---|
1319 | } |
---|
1320 | } |
---|
1321 | |
---|
1322 | const paths& |
---|
1323 | cache::get_paths () const |
---|
1324 | { |
---|
1325 | return paths_; |
---|
1326 | } |
---|
1327 | |
---|
1328 | int |
---|
1329 | cache::archive_count () const |
---|
1330 | { |
---|
1331 | return archives_.size (); |
---|
1332 | } |
---|
1333 | |
---|
1334 | int |
---|
1335 | cache::object_count () const |
---|
1336 | { |
---|
1337 | return objects_.size (); |
---|
1338 | } |
---|
1339 | |
---|
1340 | int |
---|
1341 | cache::path_count () const |
---|
1342 | { |
---|
1343 | return paths_.size (); |
---|
1344 | } |
---|
1345 | |
---|
1346 | void |
---|
1347 | cache::get_archive_files (files& afiles) |
---|
1348 | { |
---|
1349 | for (archives::iterator ai = archives_.begin (); ai != archives_.end (); ++ai) |
---|
1350 | afiles.push_back ((*ai).second->name ().full ()); |
---|
1351 | } |
---|
1352 | |
---|
1353 | void |
---|
1354 | cache::get_object_files (files& ofiles) |
---|
1355 | { |
---|
1356 | for (objects::iterator oi = objects_.begin (); oi != objects_.end (); ++oi) |
---|
1357 | ofiles.push_back ((*oi).second->name ()); |
---|
1358 | } |
---|
1359 | |
---|
1360 | void |
---|
1361 | cache::output_archive_files (std::ostream& out) |
---|
1362 | { |
---|
1363 | for (archives::iterator ai = archives_.begin (); ai != archives_.end (); ++ai) |
---|
1364 | out << ' ' << (*ai).second->name ().full () << std::endl; |
---|
1365 | } |
---|
1366 | |
---|
1367 | void |
---|
1368 | cache::output_object_files (std::ostream& out) |
---|
1369 | { |
---|
1370 | for (objects::iterator oi = objects_.begin (); oi != objects_.end (); ++oi) |
---|
1371 | out << ' ' << (*oi).second->name ().full () << std::endl; |
---|
1372 | } |
---|
1373 | |
---|
1374 | void |
---|
1375 | cache::input (const std::string& path) |
---|
1376 | { |
---|
1377 | if (opened) |
---|
1378 | { |
---|
1379 | collect_object_files (path); |
---|
1380 | archive_begin (path); |
---|
1381 | } |
---|
1382 | } |
---|
1383 | |
---|
1384 | void |
---|
1385 | find_libraries (paths& libraries, paths& libpaths, paths& libs) |
---|
1386 | { |
---|
1387 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
---|
1388 | std::cout << "Finding libraries:." << std::endl; |
---|
1389 | libraries.clear (); |
---|
1390 | for (paths::size_type l = 0; l < libs.size (); ++l) |
---|
1391 | { |
---|
1392 | std::string lib = "lib" + libs[l] + ".a"; |
---|
1393 | if (rld::verbose () >= RLD_VERBOSE_DETAILS) |
---|
1394 | std::cout << " searching: " << lib << std::endl; |
---|
1395 | bool found = false; |
---|
1396 | for (paths::size_type p = 0; p < libpaths.size (); ++p) |
---|
1397 | { |
---|
1398 | std::string plib; |
---|
1399 | path_join (libpaths[p], lib, plib); |
---|
1400 | if (rld::verbose () >= RLD_VERBOSE_DETAILS) |
---|
1401 | std::cout << " checking: " << plib << std::endl; |
---|
1402 | if (check_file (plib)) |
---|
1403 | { |
---|
1404 | if (rld::verbose () >= RLD_VERBOSE_INFO) |
---|
1405 | std::cout << " found: " << plib << std::endl; |
---|
1406 | libraries.push_back (plib); |
---|
1407 | found = true; |
---|
1408 | break; |
---|
1409 | } |
---|
1410 | } |
---|
1411 | |
---|
1412 | if (!found) |
---|
1413 | throw rld::error ("Not found", lib); |
---|
1414 | } |
---|
1415 | } |
---|
1416 | |
---|
1417 | } |
---|
1418 | } |
---|