gxg-framework/doc/GxG/IO/File.html
2021-11-16 08:41:53 -08:00

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<title>class GxG::IO::File - RDoc Documentation</title>
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<h3>Parent</h3>
<p class="link"><a href="IO.html">GxG::IO::IO</a>
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<h1 id="class-GxG::IO::File" class="class">
class GxG::IO::File
</h1>
<section class="description">
</section>
<section id="5Buntitled-5D" class="documentation-section">
<section id="public-class-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Public Class Methods</h3>
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<div id="method-c-new" class="method-detail ">
<div class="method-heading">
<span class="method-name">new</span><span
class="method-args">(*args)</span>
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<div class="method-description">
<p>As of Ruby 1.9.2: if a file is not set to :binary mode, it defaults to :text mode. See: <a href="http://www.tutorialspoint.com/ruby/ruby_input_output.htm">www.tutorialspoint.com/ruby/ruby_input_output.htm</a> &lt;file&gt;.stat table: (mode example : 0100664)</p>
<pre>0700 rwx mask for owner
0400 r for owner
0200 w for owner
0100 x for owner
0070 rwx mask for group
0040 r for group
0020 w for group
0010 x for group
0007 rwx mask for other
0004 r for other
0002 w for other
0001 x for other
4000 Set user ID on execution
2000 Set group ID on execution
1000 Save swapped text, even after use</pre>
<div class="method-calls-super">
Calls superclass method
<a href="IO.html#method-c-new"><code>GxG::IO::IO::new</code></a>
</div>
<div class="method-source-code" id="new-source">
<pre><span class="ruby-comment"># File lib/gxg/gxg_io.rb, line 2577</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-operator">*</span><span class="ruby-identifier">args</span>)
<span class="ruby-keyword">if</span> <span class="ruby-identifier">args</span>[<span class="ruby-value">0</span>].<span class="ruby-identifier">is_a?</span>(<span class="ruby-constant">String</span>)
<span class="ruby-identifier">the_path</span> = <span class="ruby-identifier">args</span>[<span class="ruby-value">0</span>]
<span class="ruby-identifier">the_mode</span> = (<span class="ruby-identifier">args</span>[<span class="ruby-value">1</span>] <span class="ruby-operator">||</span> <span class="ruby-string">&quot;r&quot;</span>)
<span class="ruby-identifier">the_permissions</span> = <span class="ruby-identifier">args</span>[<span class="ruby-value">2</span>]
<span class="ruby-identifier">the_options</span> = <span class="ruby-identifier">args</span>[<span class="ruby-value">3</span>]
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-string">&quot;filename or path must be passed as a String&quot;</span>
<span class="ruby-keyword">end</span>
<span class="ruby-comment">#</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">the_options</span>
<span class="ruby-identifier">params</span> = <span class="ruby-keyword">self</span>.<span class="ruby-identifier">process_parameters</span>(<span class="ruby-value">0</span>,<span class="ruby-identifier">the_mode</span>,<span class="ruby-identifier">the_options</span>)
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">params</span> = <span class="ruby-keyword">self</span>.<span class="ruby-identifier">process_parameters</span>(<span class="ruby-value">0</span>,<span class="ruby-identifier">the_mode</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-comment">#</span>
<span class="ruby-identifier">mode_flags</span> = {<span class="ruby-value">:binary</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-constant">BINARY</span>, <span class="ruby-value">:text</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-constant">TEXT</span>, <span class="ruby-value">:read</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-constant">RDONLY</span>, <span class="ruby-value">:write</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-constant">WRONLY</span>, <span class="ruby-value">:readwrite</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-constant">RDWR</span>, <span class="ruby-value">:create</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-constant">CREAT</span>, <span class="ruby-value">:overwrite</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-constant">TRUNC</span>, <span class="ruby-value">:append</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-constant">APPEND</span>}
<span class="ruby-identifier">modes</span> = <span class="ruby-constant">GxG</span><span class="ruby-operator">::</span><span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-identifier">valid_mode_set</span>({<span class="ruby-value">:type</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-value">:file</span>, <span class="ruby-value">:read</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-keyword">true</span>, <span class="ruby-value">:write</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-keyword">true</span>, <span class="ruby-value">:text</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-keyword">true</span>, <span class="ruby-value">:binary</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-keyword">true</span>})
<span class="ruby-identifier">the_mode_used</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-identifier">mode_string</span> = <span class="ruby-string">&quot;&quot;</span>
<span class="ruby-identifier">mode_numeric</span> = <span class="ruby-value">0</span>
<span class="ruby-comment">#</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>]
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>].<span class="ruby-identifier">index</span>(<span class="ruby-value">:binary</span>)
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>].<span class="ruby-identifier">index</span>(<span class="ruby-value">:read</span>)
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>].<span class="ruby-identifier">index</span>(<span class="ruby-value">:write</span>)
<span class="ruby-identifier">mode_string</span> = <span class="ruby-string">&quot;binary_readwrite&quot;</span>
<span class="ruby-identifier">mode_numeric</span> = (<span class="ruby-identifier">mode_numeric</span> <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:binary</span>] <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:readwrite</span>])
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">mode_string</span> = <span class="ruby-string">&quot;binary_read&quot;</span>
<span class="ruby-identifier">mode_numeric</span> = (<span class="ruby-identifier">mode_numeric</span> <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:binary</span>] <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:read</span>])
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">else</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>].<span class="ruby-identifier">index</span>(<span class="ruby-value">:write</span>)
<span class="ruby-identifier">mode_string</span> = <span class="ruby-string">&quot;binary_write&quot;</span>
<span class="ruby-identifier">mode_numeric</span> = (<span class="ruby-identifier">mode_numeric</span> <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:binary</span>] <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:write</span>])
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">else</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>].<span class="ruby-identifier">index</span>(<span class="ruby-value">:read</span>)
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>].<span class="ruby-identifier">index</span>(<span class="ruby-value">:write</span>)
<span class="ruby-identifier">mode_string</span> = <span class="ruby-string">&quot;text_readwrite&quot;</span>
<span class="ruby-identifier">mode_numeric</span> = (<span class="ruby-identifier">mode_numeric</span> <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:text</span>] <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:readwrite</span>])
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">mode_string</span> = <span class="ruby-string">&quot;text_read&quot;</span>
<span class="ruby-identifier">mode_numeric</span> = (<span class="ruby-identifier">mode_numeric</span> <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:text</span>] <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:read</span>])
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">else</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>].<span class="ruby-identifier">index</span>(<span class="ruby-value">:write</span>)
<span class="ruby-identifier">mode_string</span> = <span class="ruby-string">&quot;text_write&quot;</span>
<span class="ruby-identifier">mode_numeric</span> = (<span class="ruby-identifier">mode_numeric</span> <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:text</span>] <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:write</span>])
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> (<span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>].<span class="ruby-identifier">index</span>(<span class="ruby-value">:overwrite</span>) <span class="ruby-operator">||</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>].<span class="ruby-identifier">index</span>(<span class="ruby-value">:truncate</span>) )
<span class="ruby-identifier">mode_string</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-string">&quot;_overwrite&quot;</span>
<span class="ruby-identifier">mode_numeric</span> = (<span class="ruby-identifier">mode_numeric</span> <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:overwrite</span>])
<span class="ruby-keyword">else</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:mode</span>].<span class="ruby-identifier">index</span>(<span class="ruby-value">:append</span>)
<span class="ruby-identifier">mode_string</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-string">&quot;_append&quot;</span>
<span class="ruby-identifier">mode_numeric</span> = (<span class="ruby-identifier">mode_numeric</span> <span class="ruby-operator">|</span> <span class="ruby-identifier">mode_flags</span>[<span class="ruby-value">:append</span>])
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-comment"># [:read, :write, :readwrite, :overwrite, :truncate:, :append, :text, :binary]</span>
<span class="ruby-identifier">modes</span>.<span class="ruby-identifier">to_enum</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">mode_entry</span><span class="ruby-operator">|</span>
<span class="ruby-keyword">if</span> (<span class="ruby-identifier">mode_entry</span>[<span class="ruby-value">:synonyms</span>].<span class="ruby-identifier">include?</span>(<span class="ruby-identifier">mode_string</span>.<span class="ruby-identifier">to_sym</span>) <span class="ruby-operator">&amp;&amp;</span> <span class="ruby-identifier">mode_entry</span>[<span class="ruby-value">:synonyms</span>].<span class="ruby-identifier">include?</span>(<span class="ruby-identifier">mode_numeric</span>))
<span class="ruby-identifier">the_mode_used</span> = <span class="ruby-identifier">mode_entry</span>
<span class="ruby-keyword">break</span>
<span class="ruby-keyword">end</span>
<span class="ruby-comment">#</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> (<span class="ruby-identifier">the_mode_used</span>)
<span class="ruby-identifier">options</span> = {}
<span class="ruby-identifier">the_mode</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:external_encoding</span>]
<span class="ruby-identifier">options</span>[<span class="ruby-value">:external_encoding</span>] = <span class="ruby-identifier">params</span>.<span class="ruby-identifier">delete</span>(<span class="ruby-value">:external_encoding</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:internal_encoding</span>]
<span class="ruby-comment">#If the value is nil no conversion occurs.</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:internal_encoding</span>] <span class="ruby-operator">==</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:external_encoding</span>]
<span class="ruby-identifier">options</span>[<span class="ruby-value">:internal_encoding</span>] = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">options</span>[<span class="ruby-value">:internal_encoding</span>] = <span class="ruby-identifier">params</span>.<span class="ruby-identifier">delete</span>(<span class="ruby-value">:internal_encoding</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">params</span>[<span class="ruby-value">:autoclose</span>]
<span class="ruby-identifier">options</span>[<span class="ruby-value">:autoclose</span>] = <span class="ruby-identifier">params</span>.<span class="ruby-identifier">delete</span>(<span class="ruby-value">:autoclose</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> <span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-identifier">exist?</span>(<span class="ruby-identifier">the_path</span>)
<span class="ruby-identifier">the_mode</span> = <span class="ruby-identifier">the_mode_used</span>[<span class="ruby-value">:if_exist</span>].<span class="ruby-identifier">to_i</span>
<span class="ruby-keyword">else</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">the_mode_used</span>[<span class="ruby-value">:if_create</span>]
<span class="ruby-identifier">the_mode</span> = <span class="ruby-identifier">the_mode_used</span>[<span class="ruby-value">:if_create</span>].<span class="ruby-identifier">to_i</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-string">&quot;you cannot operate upon a non-existent file in read-only mode&quot;</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">the_mode</span>
<span class="ruby-identifier">file_descriptor</span> = <span class="ruby-constant">GxG</span><span class="ruby-operator">::</span><span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-constant">IO</span><span class="ruby-operator">::</span><span class="ruby-identifier">sysopen</span>(<span class="ruby-identifier">the_path</span>,<span class="ruby-identifier">the_mode</span>)
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">file_descriptor</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">end</span>
<span class="ruby-comment">#</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">file_descriptor</span>
<span class="ruby-comment">#</span>
<span class="ruby-keyword">if</span> <span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-identifier">directory?</span>(<span class="ruby-identifier">the_path</span>)
<span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-string">&quot;you cannot operate upon a directory as if it were a file&quot;</span>
<span class="ruby-keyword">else</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">the_permissions</span>
<span class="ruby-keyword">super</span>(<span class="ruby-identifier">file_descriptor</span>, <span class="ruby-identifier">the_mode</span>, <span class="ruby-identifier">the_permissions</span>, <span class="ruby-identifier">options</span>)
<span class="ruby-keyword">else</span>
<span class="ruby-keyword">super</span>(<span class="ruby-identifier">file_descriptor</span>, <span class="ruby-identifier">the_mode</span>, <span class="ruby-keyword">nil</span>, <span class="ruby-identifier">options</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-comment">#</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">Exception</span>, <span class="ruby-node">&quot;unable to create a valid file descriptor with: #{args.inspect}&quot;</span>
<span class="ruby-keyword">end</span>
<span class="ruby-comment">#</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">modes_list</span> = []
<span class="ruby-identifier">modes</span>.<span class="ruby-identifier">to_enum</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">item</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">modes_list</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">item</span>[<span class="ruby-value">:synonyms</span>]
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-node">&quot;#{params[:mode].inspect} is an invalid :mode, use one of the following: #{modes_list.inspect}&quot;</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-comment">#</span>
<span class="ruby-ivar">@path</span> = <span class="ruby-identifier">the_path</span>
<span class="ruby-keyword">self</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
</section>
<section id="public-instance-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Public Instance Methods</h3>
</header>
<div id="method-i-to_path" class="method-detail ">
<div class="method-heading">
<span class="method-name">to_path</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="to_path-source">
<pre><span class="ruby-comment"># File lib/gxg/gxg_io.rb, line 2709</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">to_path</span>()
<span class="ruby-ivar">@path</span>.<span class="ruby-identifier">dup</span>
<span class="ruby-keyword">end</span></pre>
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