Mercurial > octave
annotate liboctave/pathsearch.h @ 9266:1d3b91166b9c
allow pathsep to be set
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 26 May 2009 17:20:07 -0400 |
| parents | eb63fbe60fab |
| children | cdfb9ad48080 |
| rev | line source |
|---|---|
| 1786 | 1 /* |
| 2 | |
| 8920 | 3 Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2005, 2006, 2007, 2008 |
| 7017 | 4 John W. Eaton |
| 1786 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 1786 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 1786 | 21 |
| 22 */ | |
| 23 | |
| 24 #if !defined (octave_pathsearch_h) | |
| 25 #define octave_pathsearch_h 1 | |
| 26 | |
| 27 #include <string> | |
| 28 | |
| 29 #include "str-vec.h" | |
| 30 | |
| 31 class | |
| 6108 | 32 OCTAVE_API |
| 1786 | 33 dir_path |
| 34 { | |
| 35 public: | |
| 36 | |
| 3504 | 37 dir_path (const std::string& s = std::string (), |
| 38 const std::string& d = std::string ()) | |
| 3196 | 39 : p_orig (s), p_default (d), initialized (false) |
| 1786 | 40 { |
| 3174 | 41 if (! p_orig.empty ()) |
| 1786 | 42 init (); |
| 43 } | |
| 44 | |
| 45 dir_path (const dir_path& dp) | |
| 3196 | 46 : p_orig (dp.p_orig), p_default (dp.p_default), |
| 47 initialized (dp.initialized), p (dp.p), pv (dp.pv) | |
| 3174 | 48 { } |
| 1786 | 49 |
| 50 dir_path& operator = (const dir_path& dp) | |
| 51 { | |
| 3174 | 52 p_orig = dp.p_orig; |
| 3196 | 53 p_default = dp.p_default; |
| 3174 | 54 initialized = dp.initialized; |
| 1786 | 55 p = dp.p; |
| 56 pv = dp.pv; | |
| 57 return *this; | |
| 58 } | |
| 59 | |
| 60 ~dir_path (void) { } | |
| 61 | |
| 3504 | 62 void set (const std::string& s) |
| 1786 | 63 { |
| 64 initialized = false; | |
| 3174 | 65 p_orig = s; |
| 1786 | 66 init (); |
| 67 } | |
| 68 | |
| 69 string_vector elements (void); | |
| 70 string_vector all_directories (void); | |
| 71 | |
| 3504 | 72 std::string find_first (const std::string&); |
| 73 std::string find (const std::string& nm) { return find_first (nm); } | |
| 1786 | 74 |
| 3504 | 75 string_vector find_all (const std::string&); |
| 1786 | 76 |
| 4242 | 77 std::string find_first_of (const string_vector& names); |
| 78 string_vector find_all_first_of (const string_vector& names); | |
| 79 | |
| 3185 | 80 void rehash (void) |
| 81 { | |
| 82 initialized = false; | |
| 83 init (); | |
| 84 } | |
| 85 | |
| 8010 | 86 static char path_sep_char (void) |
| 87 { | |
| 88 return static_members::path_sep_char (); | |
| 89 } | |
| 90 | |
| 9266 | 91 static void path_sep_char (char c) |
| 92 { | |
| 93 static_members::path_sep_char (c); | |
| 94 } | |
| 95 | |
| 8010 | 96 static std::string path_sep_str (void) |
| 97 { | |
| 98 return static_members::path_sep_str (); | |
| 99 } | |
| 100 | |
| 101 static bool is_path_sep (char c) { return c == path_sep_char (); } | |
| 102 | |
|
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103 private: |
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104 |
| 8010 | 105 // The colon separated list that we were given. |
| 106 std::string p_orig; | |
| 107 | |
| 108 // The default path. If specified, replaces leading, trailing, or | |
| 109 // doubled colons in p_orig. | |
| 110 std::string p_default; | |
| 111 | |
| 112 // TRUE means we've unpacked p. | |
| 113 bool initialized; | |
| 114 | |
| 115 // A version of the colon separate list on which we have performed | |
| 116 // tilde, variable, and possibly default path expansion. | |
| 117 std::string p; | |
| 118 | |
| 119 // The elements of the list. | |
| 120 string_vector pv; | |
| 121 | |
| 122 void init (void); | |
| 123 | |
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124 // Use a singleton class for these data members instead of just |
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125 // making them static members of the dir_path class so that we can |
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126 // ensure proper initialization. |
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127 |
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128 class static_members |
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129 { |
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130 public: |
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131 |
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132 static_members (void); |
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133 |
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134 static char path_sep_char (void) |
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135 { |
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136 return instance_ok () ? instance->xpath_sep_char : 0; |
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137 } |
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138 |
| 9266 | 139 static void path_sep_char (char c) |
| 140 { | |
| 141 if (instance_ok ()) | |
| 142 { | |
| 143 instance->xpath_sep_char = c; | |
| 144 instance->xpath_sep_str = std::string (1, c); | |
| 145 } | |
| 146 } | |
| 147 | |
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148 static std::string path_sep_str (void) |
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149 { |
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150 return instance_ok () ? instance->xpath_sep_str : std::string (); |
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151 } |
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152 |
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153 private: |
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154 |
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155 static static_members *instance; |
| 5777 | 156 |
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157 static bool instance_ok (void); |
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158 |
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159 // No copying! |
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160 |
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161 static_members (const static_members&); |
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162 |
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163 static_members& operator = (const static_members&); |
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164 |
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165 char xpath_sep_char; |
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166 |
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167 std::string xpath_sep_str; |
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168 }; |
| 1786 | 169 }; |
| 170 | |
| 171 #endif | |
| 172 | |
| 173 /* | |
| 174 ;;; Local Variables: *** | |
| 175 ;;; mode: C++ *** | |
| 176 ;;; End: *** | |
| 177 */ |