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1 ## Copyright (C) 2000 Etienne Grossmann |
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2 ## |
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3 ## This program is free software; you can redistribute it and/or modify |
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4 ## it under the terms of the GNU General Public License as published by |
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5 ## the Free Software Foundation; either version 2 of the License, or |
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6 ## (at your option) any later version. |
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7 ## |
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8 ## This program is distributed in the hope that it will be useful, |
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9 ## but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 ## GNU General Public License for more details. |
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12 ## |
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13 ## You should have received a copy of the GNU General Public License |
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14 ## along with this program; if not, write to the Free Software |
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15 ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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16 |
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17 ## -*- texinfo -*- |
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18 ## @deftypefn {Function File} {} rmpath(dir1, ...) |
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19 ## Removes dir1,... from the current LOADPATH. |
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20 ## |
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21 ## newpath = rmpath(path, dir1, ...) |
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22 ## |
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23 ## Removes dir1,... from path. |
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24 ## @end deftypefn |
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25 |
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26 ## Author: Etienne Grossmann <etienne@cs.uky.edu> |
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27 ## Last modified: June 2005 |
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28 |
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29 ##PKGADD: mark_as_command rmpath |
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30 |
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31 function ret = rmpath (varargin) |
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32 |
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33 if (nargout == 0) |
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34 path = LOADPATH; |
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35 else |
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36 path = varargin{1}; |
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37 endif |
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38 |
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39 strip_system_path = 0; |
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40 for arg = nargout + 1:length (varargin) |
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41 p = varargin{arg}; |
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42 lp = length (p); |
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43 |
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44 ## '' is the system path |
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45 if (lp==0) |
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46 strip_system_path = 1; |
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47 endif |
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48 |
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49 ## strip '...:p:...' -> '...:...' |
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50 lo = 0 ; |
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51 while (lo != length (path)) # Loop while I can substitute |
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52 lo = length (path); |
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53 path = strrep (path, sprintf(":%s:", p), ":"); |
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54 endwhile |
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55 |
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56 ## strip 'p:...' and '...:p' -> '...' |
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57 if (length (path) > lp+1 && strcmp (path(1:lp+1), sprintf ("%s:", p))) |
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58 path = path(lp+2:end); |
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59 endif |
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60 if (length (path) > lp+1 && strcmp (path(end-lp:end), sprintf (":%s", p))) |
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61 path = path(1:end-lp-1); |
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62 endif |
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63 |
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64 ## strip 'p:' and ':p' -> ':' |
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65 if (length (path) == lp+1 && (strcmp (path, sprintf("%s:", p)) || strcmp (path, sprintf (":%s", p)))) |
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66 path = ':'; |
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67 endif |
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68 |
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69 ## strip 'p' -> '' |
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70 if (length (path) == lp && strcmp (path, p)) |
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71 path = ''; |
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72 endif |
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73 |
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74 endfor |
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75 |
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76 if (strip_system_path && strcmp (path, ':')) |
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77 path = ''; |
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78 endif |
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79 |
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80 if (nargout > 0) |
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81 ret = path; |
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82 elseif (! strcmp (LOADPATH, path)) |
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83 LOADPATH = path; |
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84 endif |
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85 |
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86 endfunction |
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87 |
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88 %!assert(rmpath(':',''),''); |
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89 %!assert(rmpath('hello:',''),'hello'); |
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90 %!assert(rmpath('hello:world',''),'hello:world'); |
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91 %!assert(rmpath(':hello:world',''),'hello:world'); |
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92 %!assert(rmpath(':hello:world:',''),'hello:world'); |
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93 %!assert(rmpath(':hello::world:',''),'hello:world'); |
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94 |
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95 %!assert(rmpath('hello','hello'),''); |
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96 %!assert(rmpath(':hello','hello'),':'); |
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97 %!assert(rmpath('hello:','hello'),':'); |
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98 %!assert(rmpath('hello:hello','hello'),''); |
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99 %!assert(rmpath('hello:hello:hello','hello'),''); |
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100 %!assert(rmpath('hello:hello:hello:hello','hello'),''); |
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101 %!assert(rmpath(':hello:hello','hello'),':'); |
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102 %!assert(rmpath('hello:hello:','hello'),':'); |
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103 %!assert(rmpath('hello','world'),'hello'); |
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104 %!assert(rmpath(':hello','','hello'),''); |
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105 %!assert(rmpath(':hello','hello',''),''); |
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106 |
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107 %!assert(rmpath('hello:world','hello','world'),''); |
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108 %!assert(rmpath('hello:world:','hello','world'),':'); |
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109 %!assert(rmpath(':hello:world:','hello','world'),':'); |
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110 |
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111 %!assert(rmpath('hello:world','','hello','world'),''); |
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112 %!assert(rmpath('hello:world:','','hello','world'),''); |
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113 %!assert(rmpath(':hello:world:','','hello','world'),''); |
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114 |
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115 %!assert(rmpath('hello:world','hello'),'world'); |
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116 %!assert(rmpath('hello:world','world'),'hello'); |
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117 %!assert(rmpath('hello:world:','hello'),'world:'); |
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118 %!assert(rmpath('hello:world:','world'),'hello:'); |
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119 %!assert(rmpath(':hello:world:','hello'),':world:'); |
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120 %!assert(rmpath(':hello:world:','world'),':hello:'); |
