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1 /* |
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2 |
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3 Copyright (C) 2006 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_load_path_h) |
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25 #define octave_load_path_h 1 |
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26 |
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27 #include <iostream> |
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28 #include <list> |
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29 #include <map> |
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30 #include <string> |
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31 |
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32 #include "pathsearch.h" |
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33 #include "str-vec.h" |
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34 |
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35 class |
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36 OCTINTERP_API |
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37 load_path |
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38 { |
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39 protected: |
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40 |
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41 load_path (void) : dir_info_list (), fcn_map () { } |
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42 |
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43 public: |
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44 |
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45 typedef void (*hook_function_ptr) (const std::string& dir); |
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46 |
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47 ~load_path (void) { } |
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48 |
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49 static void initialize (bool set_initial_path = false) |
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50 { |
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51 if (instance_ok ()) |
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52 instance->do_initialize (set_initial_path); |
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53 } |
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54 |
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55 static void clear (void) |
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56 { |
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57 if (instance_ok ()) |
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58 instance->do_clear (); |
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59 } |
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60 |
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61 static void set (const std::string& p, bool warn = false) |
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62 { |
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63 if (instance_ok ()) |
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64 instance->do_set (p, warn); |
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65 } |
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66 |
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67 static void append (const std::string& dir, bool warn = false) |
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68 { |
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69 if (instance_ok ()) |
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70 instance->do_append (dir, warn); |
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71 } |
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72 |
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73 static void prepend (const std::string& dir, bool warn = false) |
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74 { |
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75 if (instance_ok ()) |
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76 instance->do_prepend (dir, warn); |
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77 } |
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78 |
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79 static bool remove (const std::string& dir) |
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80 { |
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81 return instance_ok () ? instance->do_remove (dir) : false; |
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82 } |
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83 |
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84 static void update (void) |
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85 { |
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86 if (instance_ok ()) |
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87 instance->do_update (); |
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88 } |
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89 |
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90 static std::string find_fcn (const std::string& fcn) |
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91 { |
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92 return instance_ok () |
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93 ? instance->do_find_fcn (fcn) : std::string (); |
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94 } |
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95 |
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96 static std::string find_fcn_file (const std::string& fcn) |
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97 { |
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98 return instance_ok () ? |
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99 instance->do_find_fcn (fcn, M_FILE) : std::string (); |
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100 } |
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101 |
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102 static std::string find_oct_file (const std::string& fcn) |
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103 { |
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104 return instance_ok () ? |
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105 instance->do_find_fcn (fcn, OCT_FILE) : std::string (); |
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106 } |
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107 |
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108 static std::string find_mex_file (const std::string& fcn) |
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109 { |
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110 return instance_ok () ? |
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111 instance->do_find_fcn (fcn, MEX_FILE) : std::string (); |
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112 } |
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113 |
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114 static std::string find_file (const std::string& file) |
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115 { |
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116 return instance_ok () |
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117 ? instance->do_find_file (file) : std::string (); |
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118 } |
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119 |
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120 static std::string find_first_of (const string_vector& files) |
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121 { |
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122 return instance_ok () ? |
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123 instance->do_find_first_of (files) : std::string (); |
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124 } |
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125 |
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126 static string_vector find_all_first_of (const string_vector& files) |
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127 { |
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128 return instance_ok () ? |
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129 instance->do_find_all_first_of (files) : string_vector (); |
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130 } |
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131 |
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132 static string_vector dirs (void) |
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133 { |
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134 return instance_ok () ? instance->do_dirs () : string_vector (); |
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135 } |
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136 |
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137 static std::list<std::string> dir_list (void) |
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138 { |
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139 return instance_ok () |
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140 ? instance->do_dir_list () : std::list<std::string> (); |
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141 } |
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142 |
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143 static string_vector files (const std::string& dir) |
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144 { |
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145 return instance_ok () ? instance->do_files (dir) : string_vector (); |
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146 } |
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147 |
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148 static string_vector fcn_names (void) |
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149 { |
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150 return instance_ok () ? instance->do_fcn_names () : string_vector (); |
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151 } |
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152 |
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153 static std::string path (void) |
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154 { |
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155 return instance_ok () ? instance->do_path () : std::string (); |
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156 } |
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157 |
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158 static void display (std::ostream& os) |
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159 { |
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160 if (instance_ok ()) |
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161 instance->do_display (os); |
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162 } |
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163 |
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164 static void set_add_hook (hook_function_ptr f) { add_hook = f; } |
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165 |
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166 static void set_remove_hook (hook_function_ptr f) { remove_hook = f; } |
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167 |
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168 static void set_command_line_path (const std::string& p) |
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169 { |
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170 if (command_line_path.empty ()) |
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171 command_line_path = p; |
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172 else |
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173 command_line_path += dir_path::path_sep_str + p; |
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174 } |
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175 |
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176 static std::string system_path (void) |
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177 { |
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178 return instance_ok () ? instance->do_system_path () : std::string (); |
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179 } |
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180 |
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181 private: |
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182 |
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183 static const int M_FILE = 1; |
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184 static const int OCT_FILE = 2; |
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185 static const int MEX_FILE = 4; |
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186 |
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187 class dir_info |
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188 { |
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189 public: |
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190 |
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191 dir_info (const std::string& d) : dir_name (d) { initialize (); } |
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192 |
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193 dir_info (const dir_info& di) |
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194 : dir_name (di.dir_name), is_relative (di.is_relative), |
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195 dir_mtime (di.dir_mtime), all_files (di.all_files), |
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196 fcn_files (di.fcn_files), |
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197 private_function_map (di.private_function_map) { } |
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198 |
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199 ~dir_info (void) { } |
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200 |
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201 dir_info& operator = (const dir_info& di) |
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202 { |
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203 if (&di != this) |
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204 { |
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205 dir_name = di.dir_name; |
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206 is_relative = di.is_relative; |
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207 dir_mtime = di.dir_mtime; |
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208 all_files = di.all_files; |
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209 fcn_files = di.fcn_files; |
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210 private_function_map = di.private_function_map; |
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211 } |
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212 |
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213 return *this; |
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214 } |
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215 |
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216 void update (void); |
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217 |
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218 std::string dir_name; |
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219 bool is_relative; |
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220 octave_time dir_mtime; |
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221 string_vector all_files; |
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222 string_vector fcn_files; |
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223 std::map<std::string, int> private_function_map; |
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224 |
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225 private: |
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226 |
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227 void initialize (void); |
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228 |
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229 bool get_file_list (const std::string& d); |
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230 |
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231 void get_private_function_map (const std::string& d); |
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232 }; |
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233 |
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234 class file_info |
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235 { |
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236 public: |
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237 |
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238 file_info (const std::string& d, int t) : dir_name (d), types (t) { } |
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239 |
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240 file_info (const file_info& fi) |
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241 : dir_name (fi.dir_name), types (fi.types) { } |
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242 |
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243 ~file_info (void) { } |
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244 |
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245 file_info& operator = (const file_info& fi) |
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246 { |
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247 if (&fi != this) |
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248 { |
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249 dir_name = fi.dir_name; |
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250 types = fi.types; |
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251 } |
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252 |
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253 return *this; |
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254 } |
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255 |
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256 std::string dir_name; |
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257 int types; |
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258 }; |
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259 |
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260 // We maintain two ways of looking at the same information. |
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261 // |
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262 // First, a list of directories and the set of "public" files and |
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263 // private files (those found in the special "private" subdirectory) |
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264 // in each directory. |
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265 // |
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266 // Second, a map from file names (the union of all "public" files for all |
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267 // directories, but without filename exteinsions) to a list of |
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268 // corresponding information (directory name and file types). This |
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269 // way, we can quickly find shadowed file names and look up all |
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270 // overloaded functions (in the "@" directories used to implement |
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271 // classes). |
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272 |
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273 mutable std::list<dir_info> dir_info_list; |
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274 |
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275 mutable std::map<std::string, std::list<file_info> > fcn_map; |
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276 |
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277 static load_path *instance; |
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278 |
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279 static hook_function_ptr add_hook; |
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280 |
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281 static hook_function_ptr remove_hook; |
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282 |
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283 static std::string command_line_path; |
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284 |
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285 static std::string sys_path; |
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286 |
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287 static bool instance_ok (void); |
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288 |
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289 typedef std::list<dir_info>::const_iterator const_dir_info_list_iterator; |
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290 typedef std::list<dir_info>::iterator dir_info_list_iterator; |
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291 |
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292 typedef std::map<std::string, std::list<file_info> >::const_iterator const_fcn_map_iterator; |
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293 typedef std::map<std::string, std::list<file_info> >::iterator fcn_map_iterator; |
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294 |
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295 typedef std::list<file_info>::const_iterator const_file_info_list_iterator; |
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296 typedef std::list<file_info>::iterator file_info_list_iterator; |
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297 |
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298 const_dir_info_list_iterator find_dir_info (const std::string& dir) const; |
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299 dir_info_list_iterator find_dir_info (const std::string& dir); |
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300 |
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301 bool contains (const std::string& dir) const; |
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302 |
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303 void move (std::list<dir_info>::iterator i, bool at_end); |
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304 |
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305 void do_initialize (bool set_initial_path); |
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306 |
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307 void do_clear (void); |
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308 |
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309 void do_set (const std::string& p, bool warn); |
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310 |
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311 void do_append (const std::string& dir, bool warn); |
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312 |
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313 void do_prepend (const std::string& dir, bool warn); |
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314 |
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315 void do_add (const std::string& dir, bool at_end, bool warn); |
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316 |
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317 bool do_remove (const std::string& dir); |
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318 |
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319 void do_update (void) const; |
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320 |
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321 std::string do_find_fcn (const std::string& fcn, |
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322 int type = M_FILE | OCT_FILE | MEX_FILE) const; |
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323 |
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324 std::string do_find_file (const std::string& file) const; |
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325 |
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326 std::string do_find_first_of (const string_vector& files) const; |
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327 |
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328 string_vector do_find_all_first_of (const string_vector& files) const; |
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329 |
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330 string_vector do_dirs (void) const; |
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331 |
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332 std::list<std::string> do_dir_list (void) const; |
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333 |
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334 string_vector do_files (const std::string& dir) const; |
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335 |
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336 string_vector do_fcn_names (void) const; |
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337 |
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338 std::string do_path (void) const; |
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339 |
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340 void do_display (std::ostream& os) const; |
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341 |
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342 std::string do_system_path (void) const { return sys_path; } |
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343 |
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344 void add_to_fcn_map (const dir_info& di, bool at_end) const; |
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345 }; |
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346 |
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347 extern std::string |
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348 genpath (const std::string& dir, const string_vector& skip = "private"); |
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349 |
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350 extern void execute_pkg_add (const std::string& dir); |
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351 extern void execute_pkg_del (const std::string& dir); |
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352 |
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353 #endif |
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354 |
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355 /* |
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356 ;;; Local Variables: *** |
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357 ;;; mode: C++ *** |
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358 ;;; page-delimiter: "^/\\*" *** |
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359 ;;; End: *** |
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360 */ |
