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     3 <title>MayaChemTools:Code:PackageInfo.pm</title>
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     8 <br/>
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     9 <center>
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    10 <a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a>
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    11 </center>
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    12 <br/>
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    13 <pre>
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    14 <a name="package-PackageInfo-"></a>   1 <span class="k">package </span><span class="i">PackageInfo</span><span class="sc">;</span>
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    15    2 <span class="c">#</span>
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    16    3 <span class="c"># $RCSfile: PackageInfo.pm,v $</span>
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    17    4 <span class="c"># $Date: 2015/02/28 20:47:18 $</span>
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    18    5 <span class="c"># $Revision: 1.9 $</span>
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    19    6 <span class="c">#</span>
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    20    7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span>
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    21    8 <span class="c">#</span>
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    22    9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span>
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    23   10 <span class="c">#</span>
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    24   11 <span class="c"># This file is part of MayaChemTools.</span>
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    25   12 <span class="c">#</span>
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    26   13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span>
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    27   14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span>
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    28   15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span>
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    29   16 <span class="c"># later version.</span>
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    30   17 <span class="c">#</span>
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    31   18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span>
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    32   19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span>
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    33   20 <span class="c"># for a particular purpose.  See the GNU Lesser General Public License for more</span>
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    34   21 <span class="c"># details.</span>
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    35   22 <span class="c">#</span>
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    36   23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span>
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    37   24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span>
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    38   25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span>
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    39   26 <span class="c"># Boston, MA, 02111-1307, USA.</span>
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    40   27 <span class="c">#</span>
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    41   28 
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    42   29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span>
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    43   30 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span>
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    44   31 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span>
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    45   32 <span class="k">use</span> <span class="w">Text::ParseWords</span><span class="sc">;</span>
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    46   33 <span class="k">use</span> <span class="w">TextUtil</span><span class="sc">;</span>
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    47   34 <span class="k">use</span> <span class="w">FileUtil</span><span class="sc">;</span>
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    48   35 
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    49   36 <span class="k">use</span> <span class="w">vars</span> <span class="q">qw($AUTOLOAD @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS)</span><span class="sc">;</span>
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    50   37 
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    51   38 <span class="i">@ISA</span> = <span class="q">qw(Exporter)</span><span class="sc">;</span>
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    52   39 <span class="i">@EXPORT</span> = <span class="q">qw(GetPackageKeyValue SetPackageKeyValue IsPackageKeyNameAvailable)</span><span class="sc">;</span>
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    53   40 <span class="i">@EXPORT_OK</span> = <span class="q">qw()</span><span class="sc">;</span>
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    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>
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    55   42 
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    56   43 <span class="c">#</span>
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    57   44 <span class="c"># Load package data...</span>
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    58   45 <span class="c">#</span>
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    59   46 <span class="k">my</span><span class="s">(</span><span class="i">%PackageDataMap</span><span class="s">)</span><span class="sc">;</span>
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    60   47 <span class="i">_LoadPackageData</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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    61   48 
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    62   49 <span class="c"># Return value of a specific key...</span>
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    63   50 <span class="c">#</span>
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    64 <a name="GetPackageKeyValue-"></a>  51 <span class="k">sub </span><span class="m">GetPackageKeyValue</span> <span class="s">{</span>
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    65   52   <span class="k">my</span><span class="s">(</span><span class="i">$KeyName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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    66   53 
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    67   54   <span class="k">return</span> <span class="k">exists</span> <span class="i">$PackageDataMap</span>{<span class="i">$KeyName</span>} ? <span class="i">$PackageDataMap</span>{<span class="i">$KeyName</span>} <span class="co">:</span> <span class="q">'Not Available'</span><span class="sc">;</span>
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    68   55 <span class="s">}</span>
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    69   56 
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    70   57 <span class="c"># Set value of a specific key...</span>
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    71   58 <span class="c">#</span>
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    72 <a name="SetPackageKeyValue-"></a>  59 <span class="k">sub </span><span class="m">SetPackageKeyValue</span> <span class="s">{</span>
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    73   60   <span class="k">my</span><span class="s">(</span><span class="i">$KeyName</span><span class="cm">,</span> <span class="i">$KeyValue</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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    74   61 
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    75   62   <span class="i">$PackageDataMap</span>{<span class="i">$KeyName</span>} = <span class="i">$KeyValue</span><span class="sc">;</span>
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    76   63 <span class="s">}</span>
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    77   64 
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    78   65 <span class="c"># Check availability of a package key name...</span>
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    79   66 <span class="c">#</span>
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    80 <a name="IsPackageKeyNameAvailable-"></a>  67 <span class="k">sub </span><span class="m">IsPackageKeyNameAvailable</span> <span class="s">{</span>
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    81   68   <span class="k">my</span><span class="s">(</span><span class="i">$KeyName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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    82   69 
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    83   70   <span class="k">return</span> <span class="k">exists</span> <span class="i">$PackageDataMap</span>{<span class="i">$KeyName</span>} ? <span class="n">1</span> <span class="co">:</span> <span class="n">0</span><span class="sc">;</span>
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    84   71 <span class="s">}</span>
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    85   72 
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    86   73 <span class="c"># Implements Set<KeyName> and Get<KeyName> functions...</span>
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    87   74 <span class="c">#</span>
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    88 <a name="AUTOLOAD-"></a>  75 <span class="k">sub </span><span class="m">AUTOLOAD</span> <span class="s">{</span>
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    89   76   <span class="k">my</span><span class="s">(</span><span class="i">$KeyValue</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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    90   77   <span class="k">my</span><span class="s">(</span><span class="i">$PackageName</span><span class="cm">,</span> <span class="i">$FunctionName</span><span class="cm">,</span> <span class="i">$KeyName</span><span class="s">)</span><span class="sc">;</span>
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    91   78 
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    92   79   <span class="s">(</span><span class="i">$PackageName</span><span class="cm">,</span> <span class="i">$FunctionName</span><span class="s">)</span> = <span class="i">$AUTOLOAD</span> =~ <span class="q">/^(.*?)::(.*?)$/</span><span class="sc">;</span>
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    93   80 
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    94   81   <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="i">$FunctionName</span> =~ <span class="q">/^Get/</span> || <span class="i">$FunctionName</span> =~ <span class="q">/^Set/</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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    95   82     <span class="w">croak</span> <span class="q">"Error: Can't locate function \"$FunctionName\" via package \"$PackageName\": This function is not automatically implemented by AUTOLOAD: Only Get<KeyName> and Set<KeyName> functions are implemented via AUTOLOAD..."</span><span class="sc">;</span>
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    96   83   <span class="s">}</span>
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    97   84 
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    98   85   <span class="s">(</span><span class="i">$KeyName</span><span class="s">)</span> = <span class="i">$FunctionName</span> =~ <span class="q">/^[SG]et(.*?)$/</span><span class="sc">;</span>
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    99   86 
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   100   87   <span class="k">if</span> <span class="s">(</span><span class="i">$FunctionName</span> =~ <span class="q">/^Set/</span> && !<span class="k">defined</span><span class="s">(</span><span class="i">$KeyValue</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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   101   88     <span class="w">carp</span> <span class="q">"Warning:  ${PackageName}::${FunctionName}: Didn't set value for key $KeyName: Key value for must be specified...\n"</span><span class="sc">;</span>
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   102   89     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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   103   90   <span class="s">}</span>
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   104   91 
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   105   92   <span class="k">if</span> <span class="s">(</span><span class="i">$FunctionName</span> =~ <span class="q">/^Get/</span><span class="s">)</span> <span class="s">{</span>
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   106   93     <span class="k">return</span> <span class="i">GetPackageKeyValue</span><span class="s">(</span><span class="i">$KeyName</span><span class="s">)</span><span class="sc">;</span>
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   107   94   <span class="s">}</span>
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   108   95   <span class="k">elsif</span> <span class="s">(</span><span class="i">$FunctionName</span> =~ <span class="q">/^Set/</span><span class="s">)</span> <span class="s">{</span>
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   109   96     <span class="k">return</span> <span class="i">SetPackageKeyValue</span><span class="s">(</span><span class="i">$KeyName</span><span class="cm">,</span> <span class="i">$KeyValue</span><span class="s">)</span><span class="sc">;</span>
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   110   97   <span class="s">}</span>
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   111   98 
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   112   99 <span class="s">}</span>
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   113  100 
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   114  101 <span class="c"># Load PackageInfo.csv files from <MayaChemTools>/lib directory...</span>
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   115  102 <span class="c">#</span>
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   116 <a name="_LoadPackageData-"></a> 103 <span class="k">sub </span><span class="m">_LoadPackageData</span> <span class="s">{</span>
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   117  104   <span class="k">my</span><span class="s">(</span><span class="i">$PackageDataFile</span><span class="cm">,</span> <span class="i">$MayaChemToolsLibDir</span><span class="cm">,</span> <span class="i">$Key</span><span class="cm">,</span> <span class="i">$Value</span><span class="cm">,</span> <span class="i">$Line</span><span class="cm">,</span> <span class="i">$InDelim</span><span class="cm">,</span> <span class="i">@LineWords</span><span class="s">)</span><span class="sc">;</span>
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   118  105 
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   119  106   <span class="i">$MayaChemToolsLibDir</span> = <span class="i">GetMayaChemToolsLibDirName</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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   120  107   <span class="i">$PackageDataFile</span> =  <span class="q">"$MayaChemToolsLibDir"</span> . <span class="q">"/data/PackageInfo.csv"</span><span class="sc">;</span>
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   121  108 
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   122  109   <span class="k">if</span> <span class="s">(</span>! <span class="k">-e</span> <span class="q">"$PackageDataFile"</span><span class="s">)</span> <span class="s">{</span>
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   123  110     <span class="w">croak</span> <span class="q">"Error: MayaChemTools package file, $PackageDataFile, is missing: Possible installation problems..."</span><span class="sc">;</span>
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   124  111   <span class="s">}</span>
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   125  112 
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   126  113   <span class="c">#</span>
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   127  114   <span class="c"># Format:</span>
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   128  115   <span class="c">#</span>
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   129  116   <span class="c"># "Key","Value"</span>
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   130  117   <span class="c"># "PackageName","MayaChemTools"</span>
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   131  118   <span class="c"># ... ...</span>
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   132  119   <span class="c">#</span>
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   133  120 
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   134  121   <span class="i">%PackageDataMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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   135  122   <span class="i">$InDelim</span> = <span class="q">"\,"</span><span class="sc">;</span>
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   136  123 
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   137  124   <span class="k">open</span> <span class="w">PACKAGEDATAFILE</span><span class="cm">,</span> <span class="q">"$PackageDataFile"</span> <span class="k">or</span> <span class="w">croak</span> <span class="q">"Couldn't open $PackageDataFile: $! ..."</span><span class="sc">;</span>
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   138  125 
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   139  126   <span class="c"># Skip lines up to column labels...</span>
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   140  127   <span class="j">LINE:</span> <span class="k">while</span> <span class="s">(</span><span class="i">$Line</span> = <span class="i">GetTextLine</span><span class="s">(</span>\<span class="i">*PACKAGEDATAFILE</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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   141  128     <span class="k">if</span> <span class="s">(</span><span class="i">$Line</span> !~ <span class="q">/^#/</span><span class="s">)</span> <span class="s">{</span>
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   142  129       <span class="k">last</span> <span class="j">LINE</span><span class="sc">;</span>
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   143  130     <span class="s">}</span>
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   144  131   <span class="s">}</span>
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   145  132 
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   146  133   <span class="c"># Process key/value pairs...</span>
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   147  134   <span class="j">LINE:</span> <span class="k">while</span> <span class="s">(</span><span class="i">$Line</span> = <span class="i">GetTextLine</span><span class="s">(</span>\<span class="i">*PACKAGEDATAFILE</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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   148  135     <span class="k">if</span> <span class="s">(</span><span class="i">$Line</span> =~ <span class="q">/^#/</span><span class="s">)</span> <span class="s">{</span>
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   149  136       <span class="k">next</span> <span class="j">LINE</span><span class="sc">;</span>
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   150  137     <span class="s">}</span>
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   151  138     <span class="i">@LineWords</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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   152  139     <span class="i">@LineWords</span> = <span class="i">quotewords</span><span class="s">(</span><span class="i">$InDelim</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="i">$Line</span><span class="s">)</span><span class="sc">;</span>
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   153  140     <span class="k">if</span> <span class="s">(</span><span class="i">@LineWords</span> != <span class="n">2</span><span class="s">)</span> <span class="s">{</span>
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   154  141       <span class="w">croak</span> <span class="q">"Error: The number of data fields, @LineWords, in $PackageDataFile must be 2.\nLine: $Line..."</span><span class="sc">;</span>
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   155  142     <span class="s">}</span>
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   156  143     <span class="s">(</span><span class="i">$Key</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span> = <span class="i">@LineWords</span><span class="sc">;</span>
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   157  144 
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   158  145     <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$PackageDataMap</span>{<span class="i">$Key</span>}<span class="s">)</span> <span class="s">{</span>
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   159  146       <span class="w">carp</span> <span class="q">"Warning: Multiple entries for key, $Key, in $PackageDataFile. Ignoring current line.\nLine: $Line..."</span><span class="sc">;</span>
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   160  147       <span class="k">next</span> <span class="j">LINE</span><span class="sc">;</span>
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   161  148     <span class="s">}</span>
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   162  149 
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   163  150     <span class="i">$PackageDataMap</span>{<span class="i">$Key</span>} = <span class="i">$Value</span><span class="sc">;</span>
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   164  151   <span class="s">}</span>
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   165  152   <span class="k">close</span> <span class="w">PACKAGEDATAFILE</span><span class="sc">;</span>
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   166  153 <span class="s">}</span>
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   167  154 
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   168 <a name="EOF-"></a></pre>
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   169 <p> </p>
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   170 <br />
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   171 <center>
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   172 <img src="../../../images/h2o2.png">
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   173 </center>
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   174 </body>
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   175 </html>
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