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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 "str-vec.h" |
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33 |
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34 class |
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35 load_path |
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36 { |
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37 protected: |
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38 |
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39 load_path (void) : dir_info_list (), fcn_map () { } |
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40 |
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41 public: |
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42 |
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43 typedef void (*hook_function_ptr) (const std::string& dir); |
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44 |
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45 ~load_path (void) { } |
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46 |
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47 static void initialize (void) |
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48 { |
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49 if (instance_ok ()) |
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50 instance->do_initialize (); |
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51 } |
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52 |
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53 static void clear (void) |
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54 { |
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55 if (instance_ok ()) |
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56 instance->do_clear (); |
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57 } |
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58 |
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59 static void set (const std::string& p) |
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60 { |
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61 if (instance_ok ()) |
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62 instance->do_set (p); |
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63 } |
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64 |
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65 static void append (const std::string& dir) |
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66 { |
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67 if (instance_ok ()) |
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68 instance->do_append (dir); |
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69 } |
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70 |
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71 static void prepend (const std::string& dir) |
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72 { |
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73 if (instance_ok ()) |
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74 instance->do_prepend (dir); |
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75 } |
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76 |
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77 static bool remove (const std::string& dir) |
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78 { |
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79 return instance_ok () ? instance->do_remove (dir) : false; |
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80 } |
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81 |
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82 static void update (void) |
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83 { |
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84 if (instance_ok ()) |
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85 instance->do_update (); |
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86 } |
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87 |
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88 static std::string find_fcn (const std::string& fcn) |
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89 { |
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90 return instance_ok () |
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91 ? instance->do_find_fcn (fcn) : std::string (); |
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92 } |
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93 |
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94 static std::string find_fcn_file (const std::string& fcn) |
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95 { |
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96 return instance_ok () ? |
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97 instance->do_find_fcn (fcn, M_FILE) : std::string (); |
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98 } |
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99 |
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100 static std::string find_oct_file (const std::string& fcn) |
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101 { |
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102 return instance_ok () ? |
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103 instance->do_find_fcn (fcn, OCT_FILE) : std::string (); |
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104 } |
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105 |
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106 static std::string find_file (const std::string& file) |
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107 { |
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108 return instance_ok () |
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109 ? instance->do_find_file (file) : std::string (); |
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110 } |
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111 |
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112 static std::string find_first_of (const string_vector& files) |
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113 { |
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114 return instance_ok () ? |
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115 instance->do_find_first_of (files) : std::string (); |
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116 } |
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117 |
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118 static string_vector find_all_first_of (const string_vector& files) |
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119 { |
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120 return instance_ok () ? |
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121 instance->do_find_all_first_of (files) : string_vector (); |
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122 } |
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123 |
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124 static string_vector dirs (void) |
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125 { |
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126 return instance_ok () ? instance->do_dirs () : string_vector (); |
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127 } |
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128 |
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129 static std::list<std::string> dir_list (void) |
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130 { |
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131 return instance_ok () |
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132 ? instance->do_dir_list () : std::list<std::string> (); |
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133 } |
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134 |
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135 static string_vector files (const std::string& dir) |
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136 { |
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137 return instance_ok () ? instance->do_files (dir) : string_vector (); |
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138 } |
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139 |
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140 static string_vector fcn_names (void) |
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141 { |
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142 return instance_ok () ? instance->do_fcn_names () : string_vector (); |
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143 } |
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144 |
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145 static std::string path (void) |
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146 { |
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147 return instance_ok () ? instance->do_path () : std::string (); |
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148 } |
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149 |
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150 static void display (std::ostream& os) |
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151 { |
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152 if (instance_ok ()) |
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153 instance->do_display (os); |
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154 } |
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155 |
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156 static void set_add_hook (hook_function_ptr f) { add_hook = f; } |
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157 |
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158 static void set_remove_hook (hook_function_ptr f) { remove_hook = f; } |
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159 |
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160 static void set_command_line_path (const std::string& p) |
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161 { |
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162 command_line_path = p; |
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163 } |
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164 |
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165 private: |
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166 |
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167 static const int M_FILE = 1; |
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168 static const int OCT_FILE = 2; |
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169 |
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170 class dir_info |
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171 { |
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172 public: |
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173 |
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174 dir_info (const std::string& d) : dir_name (d) { initialize (); } |
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175 |
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176 dir_info (const dir_info& di) |
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177 : dir_name (di.dir_name), is_relative (di.is_relative), |
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178 dir_mtime (di.dir_mtime), all_files (di.all_files), |
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179 fcn_files (di.fcn_files), |
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180 private_function_map (di.private_function_map) { } |
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181 |
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182 ~dir_info (void) { } |
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183 |
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184 dir_info& operator = (const dir_info& di) |
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185 { |
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186 if (&di != this) |
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187 { |
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188 dir_name = di.dir_name; |
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189 is_relative = di.is_relative; |
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190 dir_mtime = di.dir_mtime; |
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191 all_files = di.all_files; |
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192 fcn_files = di.fcn_files; |
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193 private_function_map = di.private_function_map; |
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194 } |
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195 |
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196 return *this; |
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197 } |
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198 |
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199 void update (void); |
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200 |
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201 std::string dir_name; |
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202 bool is_relative; |
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203 octave_time dir_mtime; |
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204 string_vector all_files; |
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205 string_vector fcn_files; |
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206 std::map<std::string, int> private_function_map; |
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207 |
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208 private: |
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209 |
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210 void initialize (void); |
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211 |
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212 bool get_file_list (const std::string& d); |
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213 |
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214 void get_private_function_map (const std::string& d); |
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215 }; |
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216 |
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217 class file_info |
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218 { |
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219 public: |
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220 |
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221 file_info (const std::string& d, int t) : dir_name (d), types (t) { } |
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222 |
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223 file_info (const file_info& fi) |
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224 : dir_name (fi.dir_name), types (fi.types) { } |
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225 |
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226 ~file_info (void) { } |
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227 |
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228 file_info& operator = (const file_info& fi) |
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229 { |
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230 if (&fi != this) |
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231 { |
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232 dir_name = fi.dir_name; |
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233 types = fi.types; |
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234 } |
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235 |
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236 return *this; |
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237 } |
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238 |
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239 std::string dir_name; |
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240 int types; |
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241 }; |
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242 |
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243 // We maintain two ways of looking at the same information. |
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244 // |
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245 // First, a list of directories and the set of "public" files and |
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246 // private files (those found in the special "private" subdirectory) |
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247 // in each directory. |
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248 // |
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249 // Second, a map from file names (the union of all "public" files for all |
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250 // directories, but without filename exteinsions) to a list of |
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251 // corresponding information (directory name and file types). This |
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252 // way, we can quickly find shadowed file names and look up all |
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253 // overloaded functions (in the "@" directories used to implement |
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254 // classes). |
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255 |
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256 mutable std::list<dir_info> dir_info_list; |
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257 |
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258 mutable std::map<std::string, std::list<file_info> > fcn_map; |
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259 |
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260 static load_path *instance; |
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261 |
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262 static hook_function_ptr add_hook; |
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263 |
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264 static hook_function_ptr remove_hook; |
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265 |
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266 static std::string command_line_path; |
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267 |
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268 static bool instance_ok (void); |
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269 |
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270 typedef std::list<dir_info>::const_iterator const_dir_info_list_iterator; |
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271 typedef std::list<dir_info>::iterator dir_info_list_iterator; |
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272 |
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273 typedef std::map<std::string, std::list<file_info> >::const_iterator const_fcn_map_iterator; |
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274 typedef std::map<std::string, std::list<file_info> >::iterator fcn_map_iterator; |
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275 |
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276 typedef std::list<file_info>::const_iterator const_file_info_list_iterator; |
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277 typedef std::list<file_info>::iterator file_info_list_iterator; |
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278 |
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279 const_dir_info_list_iterator find_dir_info (const std::string& dir) const; |
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280 dir_info_list_iterator find_dir_info (const std::string& dir); |
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281 |
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282 bool contains (const std::string& dir) const; |
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283 |
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284 void move (std::list<dir_info>::iterator i, bool at_end); |
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285 |
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286 void do_initialize (void); |
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287 |
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288 void do_clear (void); |
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289 |
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290 void do_set (const std::string& p); |
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291 |
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292 void do_append (const std::string& dir); |
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293 |
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294 void do_prepend (const std::string& dir); |
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295 |
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296 bool do_remove (const std::string& dir); |
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297 |
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298 void do_update (void) const; |
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299 |
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300 std::string do_find_fcn (const std::string& fcn, |
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301 int type = M_FILE | OCT_FILE) const; |
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302 |
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303 std::string do_find_file (const std::string& file) const; |
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304 |
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305 std::string do_find_first_of (const string_vector& files) const; |
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306 |
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307 string_vector do_find_all_first_of (const string_vector& files) const; |
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308 |
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309 string_vector do_dirs (void) const; |
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310 |
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311 std::list<std::string> do_dir_list (void) const; |
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312 |
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313 string_vector do_files (const std::string& dir) const; |
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314 |
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315 string_vector do_fcn_names (void) const; |
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316 |
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317 std::string do_path (void) const; |
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318 |
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319 void do_display (std::ostream& os) const; |
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320 |
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321 void add_to_fcn_map (const dir_info& di, bool at_end) const; |
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322 }; |
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323 |
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324 extern std::string |
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325 genpath (const std::string& dir, const string_vector& skip = "private"); |
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326 |
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327 extern void execute_pkg_add (const std::string& dir); |
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328 extern void execute_pkg_del (const std::string& dir); |
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329 |
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330 #endif |
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331 |
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332 /* |
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333 ;;; Local Variables: *** |
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334 ;;; mode: C++ *** |
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335 ;;; page-delimiter: "^/\\*" *** |
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336 ;;; End: *** |
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337 */ |
