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comparison mayachemtools/docs/modules/html/code/FileIO.html @ 0:73ae111cf86f draft
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| author | deepakjadmin |
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| date | Wed, 20 Jan 2016 11:55:01 -0500 |
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| -1:000000000000 | 0:73ae111cf86f |
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| 1 <html> | |
| 2 <head> | |
| 3 <title>MayaChemTools:Code:FileIO::FileIO.pm</title> | |
| 4 <meta http-equiv="content-type" content="text/html;charset=utf-8"> | |
| 5 <link rel="stylesheet" type="text/css" href="../../../css/MayaChemToolsCode.css"> | |
| 6 </head> | |
| 7 <body leftmargin="20" rightmargin="20" topmargin="10" bottommargin="10"> | |
| 8 <br/> | |
| 9 <center> | |
| 10 <a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a> | |
| 11 </center> | |
| 12 <br/> | |
| 13 <pre> | |
| 14 <a name="package-FileIO::FileIO-"></a> 1 <span class="k">package </span><span class="i">FileIO::FileIO</span><span class="sc">;</span> | |
| 15 2 <span class="c">#</span> | |
| 16 3 <span class="c"># $RCSfile: FileIO.pm,v $</span> | |
| 17 4 <span class="c"># $Date: 2015/02/28 20:48:43 $</span> | |
| 18 5 <span class="c"># $Revision: 1.27 $</span> | |
| 19 6 <span class="c">#</span> | |
| 20 7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span> | |
| 21 8 <span class="c">#</span> | |
| 22 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span> | |
| 23 10 <span class="c">#</span> | |
| 24 11 <span class="c"># This file is part of MayaChemTools.</span> | |
| 25 12 <span class="c">#</span> | |
| 26 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span> | |
| 27 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span> | |
| 28 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span> | |
| 29 16 <span class="c"># later version.</span> | |
| 30 17 <span class="c">#</span> | |
| 31 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span> | |
| 32 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span> | |
| 33 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span> | |
| 34 21 <span class="c"># details.</span> | |
| 35 22 <span class="c">#</span> | |
| 36 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span> | |
| 37 24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span> | |
| 38 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span> | |
| 39 26 <span class="c"># Boston, MA, 02111-1307, USA.</span> | |
| 40 27 <span class="c">#</span> | |
| 41 28 | |
| 42 29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span> | |
| 43 30 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span> | |
| 44 31 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span> | |
| 45 32 <span class="k">use</span> <span class="w">FileHandle</span><span class="sc">;</span> | |
| 46 33 <span class="k">use</span> <span class="w">ObjectProperty</span><span class="sc">;</span> | |
| 47 34 | |
| 48 35 <span class="k">use</span> <span class="w">vars</span> <span class="q">qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS)</span><span class="sc">;</span> | |
| 49 36 | |
| 50 37 <span class="i">@ISA</span> = <span class="q">qw(ObjectProperty Exporter)</span><span class="sc">;</span> | |
| 51 38 <span class="i">@EXPORT</span> = <span class="q">qw()</span><span class="sc">;</span> | |
| 52 39 <span class="i">@EXPORT_OK</span> = <span class="q">qw()</span><span class="sc">;</span> | |
| 53 40 | |
| 54 41 <span class="i">%EXPORT_TAGS</span> = <span class="s">(</span><span class="w">all</span> <span class="cm">=></span> <span class="s">[</span><span class="i">@EXPORT</span><span class="cm">,</span> <span class="i">@EXPORT_OK</span><span class="s">]</span><span class="s">)</span><span class="sc">;</span> | |
| 55 42 | |
| 56 43 <span class="c"># Setup class variables...</span> | |
| 57 44 <span class="k">my</span><span class="s">(</span><span class="i">$ClassName</span><span class="s">)</span><span class="sc">;</span> | |
| 58 45 <span class="i">_InitializeClass</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
| 59 46 | |
| 60 47 <span class="c"># Class constructor...</span> | |
| 61 <a name="new-"></a> 48 <span class="k">sub </span><span class="m">new</span> <span class="s">{</span> | |
| 62 49 <span class="k">my</span><span class="s">(</span><span class="i">$Class</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 63 50 | |
| 64 51 <span class="c"># Initialize object...</span> | |
| 65 52 <span class="k">my</span> <span class="i">$This</span> = <span class="s">{</span><span class="s">}</span><span class="sc">;</span> | |
| 66 53 <span class="k">bless</span> <span class="i">$This</span><span class="cm">,</span> <span class="k">ref</span><span class="s">(</span><span class="i">$Class</span><span class="s">)</span> || <span class="i">$Class</span><span class="sc">;</span> | |
| 67 54 <span class="i">$This</span><span class="i">->_InitializeFileIO</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
| 68 55 | |
| 69 56 <span class="i">$This</span><span class="i">->_InitializeFileIOProperties</span><span class="s">(</span><span class="i">%NamesAndValues</span><span class="s">)</span><span class="sc">;</span> | |
| 70 57 | |
| 71 58 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
| 72 59 <span class="s">}</span> | |
| 73 60 | |
| 74 61 <span class="c"># Initialize object data...</span> | |
| 75 62 <span class="c">#</span> | |
| 76 <a name="_InitializeFileIO-"></a> 63 <span class="k">sub </span><span class="m">_InitializeFileIO</span> <span class="s">{</span> | |
| 77 64 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 78 65 | |
| 79 66 <span class="c"># File name...</span> | |
| 80 67 <span class="i">$This</span>->{<span class="w">Name</span>} = <span class="q">''</span><span class="sc">;</span> | |
| 81 68 | |
| 82 69 <span class="c"># Read, write or append...</span> | |
| 83 70 <span class="i">$This</span>->{<span class="w">Mode</span>} = <span class="q">'Read'</span><span class="sc">;</span> | |
| 84 71 | |
| 85 72 <span class="c"># Open/close status...</span> | |
| 86 73 <span class="i">$This</span>->{<span class="w">Status</span>} = <span class="n">0</span><span class="sc">;</span> | |
| 87 74 | |
| 88 75 <span class="c"># File handle returned by file open...</span> | |
| 89 76 <span class="i">$This</span>->{<span class="w">FileHandle</span>} = <span class="q">''</span><span class="sc">;</span> | |
| 90 77 <span class="s">}</span> | |
| 91 78 | |
| 92 79 <span class="c"># Initialize class ...</span> | |
| 93 <a name="_InitializeClass-"></a> 80 <span class="k">sub </span><span class="m">_InitializeClass</span> <span class="s">{</span> | |
| 94 81 <span class="c">#Class name...</span> | |
| 95 82 <span class="i">$ClassName</span> = <span class="w">__PACKAGE__</span><span class="sc">;</span> | |
| 96 83 | |
| 97 84 <span class="s">}</span> | |
| 98 85 | |
| 99 86 <span class="c"># Initialize object properties....</span> | |
| 100 <a name="_InitializeFileIOProperties-"></a> 87 <span class="k">sub </span><span class="m">_InitializeFileIOProperties</span> <span class="s">{</span> | |
| 101 88 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 102 89 | |
| 103 90 <span class="k">my</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="cm">,</span> <span class="i">$MethodName</span><span class="s">)</span><span class="sc">;</span> | |
| 104 91 <span class="k">while</span> <span class="s">(</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span> = <span class="k">each</span> <span class="i">%NamesAndValues</span><span class="s">)</span> <span class="s">{</span> | |
| 105 92 <span class="i">$MethodName</span> = <span class="q">"Set${Name}"</span><span class="sc">;</span> | |
| 106 93 <span class="i">$This</span><span class="i">->$MethodName</span><span class="s">(</span><span class="i">$Value</span><span class="s">)</span><span class="sc">;</span> | |
| 107 94 <span class="s">}</span> | |
| 108 95 | |
| 109 96 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
| 110 97 <span class="s">}</span> | |
| 111 98 | |
| 112 99 <span class="c"># Close any open file...</span> | |
| 113 <a name="DESTROY-"></a> 100 <span class="k">sub </span><span class="m">DESTROY</span> <span class="s">{</span> | |
| 114 101 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 115 102 | |
| 116 103 <span class="i">$This</span><span class="i">->Close</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
| 117 104 | |
| 118 105 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
| 119 106 <span class="s">}</span> | |
| 120 107 | |
| 121 108 <span class="c"># Set file name and make sure it's not already set...</span> | |
| 122 109 <span class="c">#</span> | |
| 123 <a name="SetName-"></a> 110 <span class="k">sub </span><span class="m">SetName</span> <span class="s">{</span> | |
| 124 111 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Name</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 125 112 | |
| 126 113 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Name</span>}<span class="s">)</span> <span class="s">{</span> | |
| 127 114 <span class="w">croak</span> <span class="q">"Error: ${ClassName}->SetName: Can't set file name to $Name: $This->{Name}..."</span><span class="sc">;</span> | |
| 128 115 <span class="s">}</span> | |
| 129 116 | |
| 130 117 <span class="i">$This</span>->{<span class="w">Name</span>} = <span class="i">$Name</span><span class="sc">;</span> | |
| 131 118 | |
| 132 119 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
| 133 120 <span class="s">}</span> | |
| 134 121 | |
| 135 122 <span class="c"># Open file using specified mode...</span> | |
| 136 123 <span class="c">#</span> | |
| 137 <a name="Open-"></a> 124 <span class="k">sub </span><span class="m">Open</span> <span class="s">{</span> | |
| 138 125 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Mode</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 139 126 | |
| 140 127 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Status</span>}<span class="s">)</span> <span class="s">{</span> | |
| 141 128 <span class="w">croak</span> <span class="q">"Error: ${ClassName}->Open: Can't open file $This->{Name}: It's already open..."</span><span class="sc">;</span> | |
| 142 129 <span class="s">}</span> | |
| 143 130 | |
| 144 131 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$Mode</span><span class="s">)</span> <span class="s">{</span> | |
| 145 132 <span class="c"># Set mode...</span> | |
| 146 133 <span class="i">$This</span><span class="i">->SetMode</span><span class="s">(</span><span class="i">$Mode</span><span class="s">)</span><span class="sc">;</span> | |
| 147 134 <span class="s">}</span> | |
| 148 135 | |
| 149 136 <span class="c"># Get name and mode...</span> | |
| 150 137 <span class="k">my</span><span class="s">(</span><span class="i">$Name</span><span class="s">)</span><span class="sc">;</span> | |
| 151 138 <span class="i">$Name</span> = <span class="i">$This</span>->{<span class="w">Name</span>}<span class="sc">;</span> | |
| 152 139 <span class="i">$Mode</span> = <span class="i">$This</span><span class="i">->_GetOpenMode</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
| 153 140 | |
| 154 141 <span class="c"># Open the file using specified mode and store FileHandle...</span> | |
| 155 142 <span class="k">my</span><span class="s">(</span><span class="i">$FileHandle</span><span class="s">)</span><span class="sc">;</span> | |
| 156 143 <span class="i">$FileHandle</span> = <span class="i">new</span> <span class="i">FileHandle</span><span class="s">(</span><span class="q">"${Mode}${Name}"</span><span class="s">)</span><span class="sc">;</span> | |
| 157 144 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$FileHandle</span><span class="s">)</span> <span class="s">{</span> | |
| 158 145 <span class="w">croak</span> <span class="q">"Error: ${ClassName}->Open: Can't open $Name: $! ..."</span><span class="sc">;</span> | |
| 159 146 <span class="s">}</span> | |
| 160 147 <span class="i">$This</span>->{<span class="w">FileHandle</span>} = <span class="i">$FileHandle</span><span class="sc">;</span> | |
| 161 148 <span class="i">$This</span>->{<span class="w">Status</span>} = <span class="n">1</span><span class="sc">;</span> | |
| 162 149 | |
| 163 150 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
| 164 151 <span class="s">}</span> | |
| 165 152 | |
| 166 153 <span class="c"># Close an open file...</span> | |
| 167 <a name="Close-"></a> 154 <span class="k">sub </span><span class="m">Close</span> <span class="s">{</span> | |
| 168 155 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 169 156 | |
| 170 157 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Status</span>}<span class="s">)</span> <span class="s">{</span> | |
| 171 158 <span class="i">$This</span>->{<span class="w">FileHandle</span>}<span class="i">->close</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
| 172 159 <span class="s">}</span> | |
| 173 160 <span class="i">$This</span>->{<span class="w">Status</span>} = <span class="n">0</span><span class="sc">;</span> | |
| 174 161 | |
| 175 162 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
| 176 163 <span class="s">}</span> | |
| 177 164 | |
| 178 165 <span class="c"># Supported Mode values are: Read, Write, Append, <, >, >>, r, w, a</span> | |
| 179 166 <span class="c">#</span> | |
| 180 <a name="SetMode-"></a> 167 <span class="k">sub </span><span class="m">SetMode</span> <span class="s">{</span> | |
| 181 168 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$SpecifiedMode</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 182 169 <span class="k">my</span><span class="s">(</span><span class="i">$Mode</span><span class="s">)</span><span class="sc">;</span> | |
| 183 170 | |
| 184 171 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$SpecifiedMode</span><span class="s">)</span> <span class="s">{</span> | |
| 185 172 <span class="i">$SpecifiedMode</span> = <span class="q">'Read'</span><span class="sc">;</span> | |
| 186 173 <span class="s">}</span> | |
| 187 174 | |
| 188 175 <span class="j">MODE:</span> <span class="s">{</span> | |
| 189 176 <span class="k">if</span> <span class="s">(</span><span class="i">$SpecifiedMode</span> =~ <span class="q">/^(Read|<|r)$/i</span><span class="s">)</span> <span class="s">{</span> <span class="i">$Mode</span> = <span class="q">'Read'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">MODE</span><span class="sc">;</span> <span class="s">}</span> | |
| 190 177 <span class="k">if</span> <span class="s">(</span><span class="i">$SpecifiedMode</span> =~ <span class="q">/^(Write|>|w)$/i</span><span class="s">)</span> <span class="s">{</span> <span class="i">$Mode</span> = <span class="q">'Write'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">MODE</span><span class="sc">;</span> <span class="s">}</span> | |
| 191 178 <span class="k">if</span> <span class="s">(</span><span class="i">$SpecifiedMode</span> =~ <span class="q">/^(Append|>>|a)$/i</span><span class="s">)</span> <span class="s">{</span> <span class="i">$Mode</span> = <span class="q">'Append'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">MODE</span><span class="sc">;</span> <span class="s">}</span> | |
| 192 179 <span class="w">croak</span> <span class="q">"Error: ${ClassName}->SetMode: Specified mode value, $SpecifiedMode, is not valid: Supported values: Read, Write, Append, <, >, >>, r, w, a..."</span><span class="sc">;</span> | |
| 193 180 <span class="s">}</span> | |
| 194 181 <span class="i">$This</span>->{<span class="w">Mode</span>} = <span class="i">$Mode</span><span class="sc">;</span> | |
| 195 182 | |
| 196 183 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
| 197 184 <span class="s">}</span> | |
| 198 185 | |
| 199 186 <span class="c"># Get mode values to be used for file open function: <, >, >></span> | |
| 200 187 <span class="c">#</span> | |
| 201 <a name="_GetOpenMode-"></a> 188 <span class="k">sub </span><span class="m">_GetOpenMode</span> <span class="s">{</span> | |
| 202 189 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
| 203 190 <span class="k">my</span><span class="s">(</span><span class="i">$Mode</span><span class="s">)</span><span class="sc">;</span> | |
| 204 191 | |
| 205 192 <span class="j">MODE:</span> <span class="s">{</span> | |
| 206 193 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Mode</span>} =~ <span class="q">/^(Read|<|r)$/i</span><span class="s">)</span> <span class="s">{</span> <span class="i">$Mode</span> = <span class="q">'<'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">MODE</span><span class="sc">;</span> <span class="s">}</span> | |
| 207 194 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Mode</span>} =~ <span class="q">/^(Write|>|w)$/i</span><span class="s">)</span> <span class="s">{</span> <span class="i">$Mode</span> = <span class="q">'>'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">MODE</span><span class="sc">;</span> <span class="s">}</span> | |
| 208 195 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Mode</span>} =~ <span class="q">/^(Append|>>|a)$/i</span><span class="s">)</span> <span class="s">{</span> <span class="i">$Mode</span> = <span class="q">'>>'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">MODE</span><span class="sc">;</span> <span class="s">}</span> | |
| 209 196 <span class="i">$Mode</span> = <span class="q">''</span><span class="sc">;</span> | |
| 210 197 <span class="s">}</span> | |
| 211 198 <span class="k">return</span> <span class="i">$Mode</span><span class="sc">;</span> | |
| 212 199 <span class="s">}</span> | |
| 213 200 | |
| 214 <a name="EOF-"></a></pre> | |
| 215 <p> </p> | |
| 216 <br /> | |
| 217 <center> | |
| 218 <img src="../../../images/h2o2.png"> | |
| 219 </center> | |
| 220 </body> | |
| 221 </html> |