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diff mayachemtools/docs/modules/html/code/FileIO.html @ 0:73ae111cf86f draft
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| author | deepakjadmin |
|---|---|
| date | Wed, 20 Jan 2016 11:55:01 -0500 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mayachemtools/docs/modules/html/code/FileIO.html Wed Jan 20 11:55:01 2016 -0500 @@ -0,0 +1,221 @@ +<html> +<head> +<title>MayaChemTools:Code:FileIO::FileIO.pm</title> +<meta http-equiv="content-type" content="text/html;charset=utf-8"> +<link rel="stylesheet" type="text/css" href="../../../css/MayaChemToolsCode.css"> +</head> +<body leftmargin="20" rightmargin="20" topmargin="10" bottommargin="10"> +<br/> +<center> +<a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a> +</center> +<br/> +<pre> +<a name="package-FileIO::FileIO-"></a> 1 <span class="k">package </span><span class="i">FileIO::FileIO</span><span class="sc">;</span> + 2 <span class="c">#</span> + 3 <span class="c"># $RCSfile: FileIO.pm,v $</span> + 4 <span class="c"># $Date: 2015/02/28 20:48:43 $</span> + 5 <span class="c"># $Revision: 1.27 $</span> + 6 <span class="c">#</span> + 7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span> + 8 <span class="c">#</span> + 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span> + 10 <span class="c">#</span> + 11 <span class="c"># This file is part of MayaChemTools.</span> + 12 <span class="c">#</span> + 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span> + 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span> + 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span> + 16 <span class="c"># later version.</span> + 17 <span class="c">#</span> + 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span> + 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span> + 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span> + 21 <span class="c"># details.</span> + 22 <span class="c">#</span> + 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span> + 24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span> + 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span> + 26 <span class="c"># Boston, MA, 02111-1307, USA.</span> + 27 <span class="c">#</span> + 28 + 29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span> + 30 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span> + 31 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span> + 32 <span class="k">use</span> <span class="w">FileHandle</span><span class="sc">;</span> + 33 <span class="k">use</span> <span class="w">ObjectProperty</span><span class="sc">;</span> + 34 + 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> + 36 + 37 <span class="i">@ISA</span> = <span class="q">qw(ObjectProperty Exporter)</span><span class="sc">;</span> + 38 <span class="i">@EXPORT</span> = <span class="q">qw()</span><span class="sc">;</span> + 39 <span class="i">@EXPORT_OK</span> = <span class="q">qw()</span><span class="sc">;</span> + 40 + 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> + 42 + 43 <span class="c"># Setup class variables...</span> + 44 <span class="k">my</span><span class="s">(</span><span class="i">$ClassName</span><span class="s">)</span><span class="sc">;</span> + 45 <span class="i">_InitializeClass</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> + 46 + 47 <span class="c"># Class constructor...</span> +<a name="new-"></a> 48 <span class="k">sub </span><span class="m">new</span> <span class="s">{</span> + 49 <span class="k">my</span><span class="s">(</span><span class="i">$Class</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> + 50 + 51 <span class="c"># Initialize object...</span> + 52 <span class="k">my</span> <span class="i">$This</span> = <span class="s">{</span><span class="s">}</span><span class="sc">;</span> + 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">$Class</span><span class="sc">;</span> + 54 <span class="i">$This</span><span class="i">->_InitializeFileIO</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> + 55 + 56 <span class="i">$This</span><span class="i">->_InitializeFileIOProperties</span><span class="s">(</span><span class="i">%NamesAndValues</span><span class="s">)</span><span class="sc">;</span> + 57 + 58 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> + 59 <span class="s">}</span> + 60 + 61 <span class="c"># Initialize object data...</span> + 62 <span class="c">#</span> +<a name="_InitializeFileIO-"></a> 63 <span class="k">sub </span><span class="m">_InitializeFileIO</span> <span class="s">{</span> + 64 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> + 65 + 66 <span class="c"># File name...</span> + 67 <span class="i">$This</span>->{<span class="w">Name</span>} = <span class="q">''</span><span class="sc">;</span> + 68 + 69 <span class="c"># Read, write or append...</span> + 70 <span class="i">$This</span>->{<span class="w">Mode</span>} = <span class="q">'Read'</span><span class="sc">;</span> + 71 + 72 <span class="c"># Open/close status...</span> + 73 <span class="i">$This</span>->{<span class="w">Status</span>} = <span class="n">0</span><span class="sc">;</span> + 74 + 75 <span class="c"># File handle returned by file open...</span> + 76 <span class="i">$This</span>->{<span class="w">FileHandle</span>} = <span class="q">''</span><span class="sc">;</span> + 77 <span class="s">}</span> + 78 + 79 <span class="c"># Initialize class ...</span> +<a name="_InitializeClass-"></a> 80 <span class="k">sub </span><span class="m">_InitializeClass</span> <span class="s">{</span> + 81 <span class="c">#Class name...</span> + 82 <span class="i">$ClassName</span> = <span class="w">__PACKAGE__</span><span class="sc">;</span> + 83 + 84 <span class="s">}</span> + 85 + 86 <span class="c"># Initialize object properties....</span> +<a name="_InitializeFileIOProperties-"></a> 87 <span class="k">sub </span><span class="m">_InitializeFileIOProperties</span> <span class="s">{</span> + 88 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> + 89 + 90 <span class="k">my</span><span class="s">(</span><span class="i">$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> + 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> + 92 <span class="i">$MethodName</span> = <span class="q">"Set${Name}"</span><span class="sc">;</span> + 93 <span class="i">$This</span><span class="i">->$MethodName</span><span class="s">(</span><span class="i">$Value</span><span class="s">)</span><span class="sc">;</span> + 94 <span class="s">}</span> + 95 + 96 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> + 97 <span class="s">}</span> + 98 + 99 <span class="c"># Close any open file...</span> +<a name="DESTROY-"></a> 100 <span class="k">sub </span><span class="m">DESTROY</span> <span class="s">{</span> + 101 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> + 102 + 103 <span class="i">$This</span><span class="i">->Close</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> + 104 + 105 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> + 106 <span class="s">}</span> + 107 + 108 <span class="c"># Set file name and make sure it's not already set...</span> + 109 <span class="c">#</span> +<a name="SetName-"></a> 110 <span class="k">sub </span><span class="m">SetName</span> <span class="s">{</span> + 111 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Name</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> + 112 + 113 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Name</span>}<span class="s">)</span> <span class="s">{</span> + 114 <span class="w">croak</span> <span class="q">"Error: ${ClassName}->SetName: Can't set file name to $Name: $This->{Name}..."</span><span class="sc">;</span> + 115 <span class="s">}</span> + 116 + 117 <span class="i">$This</span>->{<span class="w">Name</span>} = <span class="i">$Name</span><span class="sc">;</span> + 118 + 119 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> + 120 <span class="s">}</span> + 121 + 122 <span class="c"># Open file using specified mode...</span> + 123 <span class="c">#</span> +<a name="Open-"></a> 124 <span class="k">sub </span><span class="m">Open</span> <span class="s">{</span> + 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> + 126 + 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> + 128 <span class="w">croak</span> <span class="q">"Error: ${ClassName}->Open: Can't open file $This->{Name}: It's already open..."</span><span class="sc">;</span> + 129 <span class="s">}</span> + 130 + 131 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$Mode</span><span class="s">)</span> <span class="s">{</span> + 132 <span class="c"># Set mode...</span> + 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> + 134 <span class="s">}</span> + 135 + 136 <span class="c"># Get name and mode...</span> + 137 <span class="k">my</span><span class="s">(</span><span class="i">$Name</span><span class="s">)</span><span class="sc">;</span> + 138 <span class="i">$Name</span> = <span class="i">$This</span>->{<span class="w">Name</span>}<span class="sc">;</span> + 139 <span class="i">$Mode</span> = <span class="i">$This</span><span class="i">->_GetOpenMode</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> + 140 + 141 <span class="c"># Open the file using specified mode and store FileHandle...</span> + 142 <span class="k">my</span><span class="s">(</span><span class="i">$FileHandle</span><span class="s">)</span><span class="sc">;</span> + 143 <span class="i">$FileHandle</span> = <span class="i">new</span> <span class="i">FileHandle</span><span class="s">(</span><span class="q">"${Mode}${Name}"</span><span class="s">)</span><span class="sc">;</span> + 144 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$FileHandle</span><span class="s">)</span> <span class="s">{</span> + 145 <span class="w">croak</span> <span class="q">"Error: ${ClassName}->Open: Can't open $Name: $! ..."</span><span class="sc">;</span> + 146 <span class="s">}</span> + 147 <span class="i">$This</span>->{<span class="w">FileHandle</span>} = <span class="i">$FileHandle</span><span class="sc">;</span> + 148 <span class="i">$This</span>->{<span class="w">Status</span>} = <span class="n">1</span><span class="sc">;</span> + 149 + 150 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> + 151 <span class="s">}</span> + 152 + 153 <span class="c"># Close an open file...</span> +<a name="Close-"></a> 154 <span class="k">sub </span><span class="m">Close</span> <span class="s">{</span> + 155 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> + 156 + 157 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Status</span>}<span class="s">)</span> <span class="s">{</span> + 158 <span class="i">$This</span>->{<span class="w">FileHandle</span>}<span class="i">->close</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> + 159 <span class="s">}</span> + 160 <span class="i">$This</span>->{<span class="w">Status</span>} = <span class="n">0</span><span class="sc">;</span> + 161 + 162 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> + 163 <span class="s">}</span> + 164 + 165 <span class="c"># Supported Mode values are: Read, Write, Append, <, >, >>, r, w, a</span> + 166 <span class="c">#</span> +<a name="SetMode-"></a> 167 <span class="k">sub </span><span class="m">SetMode</span> <span class="s">{</span> + 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> + 169 <span class="k">my</span><span class="s">(</span><span class="i">$Mode</span><span class="s">)</span><span class="sc">;</span> + 170 + 171 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$SpecifiedMode</span><span class="s">)</span> <span class="s">{</span> + 172 <span class="i">$SpecifiedMode</span> = <span class="q">'Read'</span><span class="sc">;</span> + 173 <span class="s">}</span> + 174 + 175 <span class="j">MODE:</span> <span class="s">{</span> + 176 <span class="k">if</span> <span class="s">(</span><span class="i">$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> + 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">$Mode</span> = <span class="q">'Write'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">MODE</span><span class="sc">;</span> <span class="s">}</span> + 178 <span class="k">if</span> <span class="s">(</span><span class="i">$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> + 179 <span class="w">croak</span> <span class="q">"Error: ${ClassName}->SetMode: Specified mode value, $SpecifiedMode, is not valid: Supported values: Read, Write, Append, <, >, >>, r, w, a..."</span><span class="sc">;</span> + 180 <span class="s">}</span> + 181 <span class="i">$This</span>->{<span class="w">Mode</span>} = <span class="i">$Mode</span><span class="sc">;</span> + 182 + 183 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> + 184 <span class="s">}</span> + 185 + 186 <span class="c"># Get mode values to be used for file open function: <, >, >></span> + 187 <span class="c">#</span> +<a name="_GetOpenMode-"></a> 188 <span class="k">sub </span><span class="m">_GetOpenMode</span> <span class="s">{</span> + 189 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> + 190 <span class="k">my</span><span class="s">(</span><span class="i">$Mode</span><span class="s">)</span><span class="sc">;</span> + 191 + 192 <span class="j">MODE:</span> <span class="s">{</span> + 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">$Mode</span> = <span class="q">'<'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">MODE</span><span class="sc">;</span> <span class="s">}</span> + 194 <span class="k">if</span> <span class="s">(</span><span class="i">$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> + 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">$Mode</span> = <span class="q">'>>'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">MODE</span><span class="sc">;</span> <span class="s">}</span> + 196 <span class="i">$Mode</span> = <span class="q">''</span><span class="sc">;</span> + 197 <span class="s">}</span> + 198 <span class="k">return</span> <span class="i">$Mode</span><span class="sc">;</span> + 199 <span class="s">}</span> + 200 +<a name="EOF-"></a></pre> +<p> </p> +<br /> +<center> +<img src="../../../images/h2o2.png"> +</center> +</body> +</html>