File: C:/Ruby27-x64/share/doc/ruby/html/Gem/Uninstaller.html
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<h3>Included Modules</h3>
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<li><a class="include" href="UserInteraction.html">Gem::UserInteraction</a>
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<!-- Method Quickref -->
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<h3>Methods</h3>
<ul class="link-list" role="directory">
<li ><a href="#method-c-new">::new</a>
<li ><a href="#method-i-path_ok-3F">#path_ok?</a>
<li ><a href="#method-i-remove">#remove</a>
<li ><a href="#method-i-remove_all">#remove_all</a>
<li ><a href="#method-i-remove_executables">#remove_executables</a>
<li ><a href="#method-i-safe_delete">#safe_delete</a>
<li ><a href="#method-i-uninstall">#uninstall</a>
<li ><a href="#method-i-uninstall_gem">#uninstall_gem</a>
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<h1 id="class-Gem::Uninstaller" class="class">
class Gem::Uninstaller
</h1>
<section class="description">
<p>An <a href="Uninstaller.html"><code>Uninstaller</code></a>.</p>
<p>The uninstaller fires pre and post uninstall hooks. Hooks can be added either through a rubygems_plugin.rb file in an installed gem or via a rubygems/defaults/#{RUBY_ENGINE}.rb or rubygems/defaults/operating_system.rb file. See <a href="../Gem.html#method-c-pre_uninstall"><code>Gem.pre_uninstall</code></a> and <a href="../Gem.html#method-c-post_uninstall"><code>Gem.post_uninstall</code></a> for details.</p>
</section>
<section id="5Buntitled-5D" class="documentation-section">
<section class="attribute-method-details" class="method-section">
<header>
<h3>Attributes</h3>
</header>
<div id="attribute-i-bin_dir" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">bin_dir</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
<p>The directory a gem's executables will be installed into</p>
</div>
</div>
<div id="attribute-i-gem_home" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">gem_home</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
<p>The gem repository the gem will be installed into</p>
</div>
</div>
<div id="attribute-i-spec" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">spec</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
<p>The <a href="Specification.html"><code>Gem::Specification</code></a> for the gem being uninstalled, only set during <a href="Uninstaller.html#method-i-uninstall_gem"><code>uninstall_gem</code></a></p>
</div>
</div>
</section>
<section id="public-class-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Public Class Methods</h3>
</header>
<div id="method-c-new" class="method-detail ">
<div class="method-heading">
<span class="method-name">new</span><span
class="method-args">(gem, options = {})</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>Constructs an uninstaller that will uninstall <code>gem</code></p>
<div class="method-source-code" id="new-source">
<pre><span class="ruby-comment"># File lib/rubygems/uninstaller.rb, line 45</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">gem</span>, <span class="ruby-identifier">options</span> = {})
<span class="ruby-comment"># TODO document the valid options</span>
<span class="ruby-ivar">@gem</span> = <span class="ruby-identifier">gem</span>
<span class="ruby-ivar">@version</span> = <span class="ruby-identifier">options</span>[<span class="ruby-value">:version</span>] <span class="ruby-operator">||</span> <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">Requirement</span>.<span class="ruby-identifier">default</span>
<span class="ruby-ivar">@gem_home</span> = <span class="ruby-constant">File</span>.<span class="ruby-identifier">realpath</span>(<span class="ruby-identifier">options</span>[<span class="ruby-value">:install_dir</span>] <span class="ruby-operator">||</span> <span class="ruby-constant">Gem</span>.<span class="ruby-identifier">dir</span>)
<span class="ruby-ivar">@force_executables</span> = <span class="ruby-identifier">options</span>[<span class="ruby-value">:executables</span>]
<span class="ruby-ivar">@force_all</span> = <span class="ruby-identifier">options</span>[<span class="ruby-value">:all</span>]
<span class="ruby-ivar">@force_ignore</span> = <span class="ruby-identifier">options</span>[<span class="ruby-value">:ignore</span>]
<span class="ruby-ivar">@bin_dir</span> = <span class="ruby-identifier">options</span>[<span class="ruby-value">:bin_dir</span>]
<span class="ruby-ivar">@format_executable</span> = <span class="ruby-identifier">options</span>[<span class="ruby-value">:format_executable</span>]
<span class="ruby-ivar">@abort_on_dependent</span> = <span class="ruby-identifier">options</span>[<span class="ruby-value">:abort_on_dependent</span>]
<span class="ruby-comment"># Indicate if development dependencies should be checked when</span>
<span class="ruby-comment"># uninstalling. (default: false)</span>
<span class="ruby-comment">#</span>
<span class="ruby-ivar">@check_dev</span> = <span class="ruby-identifier">options</span>[<span class="ruby-value">:check_dev</span>]
<span class="ruby-keyword">if</span> <span class="ruby-identifier">options</span>[<span class="ruby-value">:force</span>]
<span class="ruby-ivar">@force_all</span> = <span class="ruby-keyword">true</span>
<span class="ruby-ivar">@force_ignore</span> = <span class="ruby-keyword">true</span>
<span class="ruby-keyword">end</span>
<span class="ruby-comment"># only add user directory if install_dir is not set</span>
<span class="ruby-ivar">@user_install</span> = <span class="ruby-keyword">false</span>
<span class="ruby-ivar">@user_install</span> = <span class="ruby-identifier">options</span>[<span class="ruby-value">:user_install</span>] <span class="ruby-keyword">unless</span> <span class="ruby-identifier">options</span>[<span class="ruby-value">:install_dir</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-path_ok-3F" class="method-detail ">
<div class="method-heading">
<span class="method-name">path_ok?</span><span
class="method-args">(gem_dir, spec)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>Is <code>spec</code> in <code>gem_dir</code>?</p>
<div class="method-source-code" id="path_ok-3F-source">
<pre><span class="ruby-comment"># File lib/rubygems/uninstaller.rb, line 280</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">path_ok?</span>(<span class="ruby-identifier">gem_dir</span>, <span class="ruby-identifier">spec</span>)
<span class="ruby-identifier">full_path</span> = <span class="ruby-constant">File</span>.<span class="ruby-identifier">join</span> <span class="ruby-identifier">gem_dir</span>, <span class="ruby-string">'gems'</span>, <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">full_name</span>
<span class="ruby-identifier">original_path</span> = <span class="ruby-constant">File</span>.<span class="ruby-identifier">join</span> <span class="ruby-identifier">gem_dir</span>, <span class="ruby-string">'gems'</span>, <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">original_name</span>
<span class="ruby-identifier">full_path</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">full_gem_path</span> <span class="ruby-operator">||</span> <span class="ruby-identifier">original_path</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">full_gem_path</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-remove" class="method-detail ">
<div class="method-heading">
<span class="method-name">remove</span><span
class="method-args">(spec)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<dl class="rdoc-list note-list"><dt>spec
<dd>
<p>the spec of the gem to be uninstalled</p>
</dd><dt>list
<dd>
<p>the list of all such gems</p>
</dd></dl>
<p>Warning: this method modifies the <code>list</code> parameter. Once it has uninstalled a gem, it is removed from that list.</p>
<div class="method-source-code" id="remove-source">
<pre><span class="ruby-comment"># File lib/rubygems/uninstaller.rb, line 239</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">remove</span>(<span class="ruby-identifier">spec</span>)
<span class="ruby-keyword">unless</span> <span class="ruby-identifier">path_ok?</span>(<span class="ruby-ivar">@gem_home</span>, <span class="ruby-identifier">spec</span>) <span class="ruby-keyword">or</span>
(<span class="ruby-ivar">@user_install</span> <span class="ruby-keyword">and</span> <span class="ruby-identifier">path_ok?</span>(<span class="ruby-constant">Gem</span>.<span class="ruby-identifier">user_dir</span>, <span class="ruby-identifier">spec</span>))
<span class="ruby-identifier">e</span> = <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">GemNotInHomeException</span>.<span class="ruby-identifier">new</span> \
<span class="ruby-node">"Gem '#{spec.full_name}' is not installed in directory #{@gem_home}"</span>
<span class="ruby-identifier">e</span>.<span class="ruby-identifier">spec</span> = <span class="ruby-identifier">spec</span>
<span class="ruby-identifier">raise</span> <span class="ruby-identifier">e</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">FilePermissionError</span>, <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">base_dir</span> <span class="ruby-keyword">unless</span>
<span class="ruby-constant">File</span>.<span class="ruby-identifier">writable?</span>(<span class="ruby-identifier">spec</span>.<span class="ruby-identifier">base_dir</span>)
<span class="ruby-identifier">safe_delete</span> { <span class="ruby-constant">FileUtils</span>.<span class="ruby-identifier">rm_r</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">full_gem_path</span> }
<span class="ruby-identifier">safe_delete</span> { <span class="ruby-constant">FileUtils</span>.<span class="ruby-identifier">rm_r</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">extension_dir</span> }
<span class="ruby-identifier">old_platform_name</span> = <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">original_name</span>
<span class="ruby-identifier">gem</span> = <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">cache_file</span>
<span class="ruby-identifier">gem</span> = <span class="ruby-constant">File</span>.<span class="ruby-identifier">join</span>(<span class="ruby-identifier">spec</span>.<span class="ruby-identifier">cache_dir</span>, <span class="ruby-node">"#{old_platform_name}.gem"</span>) <span class="ruby-keyword">unless</span>
<span class="ruby-constant">File</span>.<span class="ruby-identifier">exist?</span> <span class="ruby-identifier">gem</span>
<span class="ruby-identifier">safe_delete</span> { <span class="ruby-constant">FileUtils</span>.<span class="ruby-identifier">rm_r</span> <span class="ruby-identifier">gem</span> }
<span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">RDoc</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">spec</span>).<span class="ruby-identifier">remove</span>
<span class="ruby-identifier">gemspec</span> = <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">spec_file</span>
<span class="ruby-keyword">unless</span> <span class="ruby-constant">File</span>.<span class="ruby-identifier">exist?</span> <span class="ruby-identifier">gemspec</span>
<span class="ruby-identifier">gemspec</span> = <span class="ruby-constant">File</span>.<span class="ruby-identifier">join</span>(<span class="ruby-constant">File</span>.<span class="ruby-identifier">dirname</span>(<span class="ruby-identifier">gemspec</span>), <span class="ruby-node">"#{old_platform_name}.gemspec"</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">safe_delete</span> { <span class="ruby-constant">FileUtils</span>.<span class="ruby-identifier">rm_r</span> <span class="ruby-identifier">gemspec</span> }
<span class="ruby-identifier">say</span> <span class="ruby-node">"Successfully uninstalled #{spec.full_name}"</span>
<span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">Specification</span>.<span class="ruby-identifier">reset</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-remove_all" class="method-detail ">
<div class="method-heading">
<span class="method-name">remove_all</span><span
class="method-args">(list)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>Removes all gems in <code>list</code>.</p>
<p>NOTE: removes uninstalled gems from <code>list</code>.</p>
<div class="method-source-code" id="remove_all-source">
<pre><span class="ruby-comment"># File lib/rubygems/uninstaller.rb, line 228</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">remove_all</span>(<span class="ruby-identifier">list</span>)
<span class="ruby-identifier">list</span>.<span class="ruby-identifier">each</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">spec</span><span class="ruby-operator">|</span> <span class="ruby-identifier">uninstall_gem</span> <span class="ruby-identifier">spec</span> }
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-remove_executables" class="method-detail ">
<div class="method-heading">
<span class="method-name">remove_executables</span><span
class="method-args">(spec)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>Removes installed executables and batch files (windows only) for <code>gemspec</code>.</p>
<div class="method-source-code" id="remove_executables-source">
<pre><span class="ruby-comment"># File lib/rubygems/uninstaller.rb, line 174</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">remove_executables</span>(<span class="ruby-identifier">spec</span>)
<span class="ruby-keyword">return</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">nil?</span> <span class="ruby-keyword">or</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">executables</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-identifier">executables</span> = <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">executables</span>.<span class="ruby-identifier">clone</span>
<span class="ruby-comment"># Leave any executables created by other installed versions</span>
<span class="ruby-comment"># of this gem installed.</span>
<span class="ruby-identifier">list</span> = <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">Specification</span>.<span class="ruby-identifier">find_all</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">s</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">s</span>.<span class="ruby-identifier">name</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">name</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">s</span>.<span class="ruby-identifier">version</span> <span class="ruby-operator">!=</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">version</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">list</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">s</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">s</span>.<span class="ruby-identifier">executables</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">exe_name</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">executables</span>.<span class="ruby-identifier">delete</span> <span class="ruby-identifier">exe_name</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">return</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">executables</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-identifier">executables</span> = <span class="ruby-identifier">executables</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">exec</span><span class="ruby-operator">|</span> <span class="ruby-identifier">formatted_program_filename</span> <span class="ruby-identifier">exec</span> }
<span class="ruby-identifier">remove</span> = <span class="ruby-keyword">if</span> <span class="ruby-ivar">@force_executables</span>.<span class="ruby-identifier">nil?</span>
<span class="ruby-identifier">ask_yes_no</span>(<span class="ruby-string">"Remove executables:\n"</span> <span class="ruby-operator">+</span>
<span class="ruby-node">"\t#{executables.join ', '}\n\n"</span> <span class="ruby-operator">+</span>
<span class="ruby-string">"in addition to the gem?"</span>,
<span class="ruby-keyword">true</span>)
<span class="ruby-keyword">else</span>
<span class="ruby-ivar">@force_executables</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">remove</span>
<span class="ruby-identifier">bin_dir</span> = <span class="ruby-ivar">@bin_dir</span> <span class="ruby-operator">||</span> <span class="ruby-constant">Gem</span>.<span class="ruby-identifier">bindir</span>(<span class="ruby-identifier">spec</span>.<span class="ruby-identifier">base_dir</span>)
<span class="ruby-identifier">raise</span> <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">FilePermissionError</span>, <span class="ruby-identifier">bin_dir</span> <span class="ruby-keyword">unless</span> <span class="ruby-constant">File</span>.<span class="ruby-identifier">writable?</span> <span class="ruby-identifier">bin_dir</span>
<span class="ruby-identifier">executables</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">exe_name</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">say</span> <span class="ruby-node">"Removing #{exe_name}"</span>
<span class="ruby-identifier">exe_file</span> = <span class="ruby-constant">File</span>.<span class="ruby-identifier">join</span> <span class="ruby-identifier">bin_dir</span>, <span class="ruby-identifier">exe_name</span>
<span class="ruby-identifier">safe_delete</span> { <span class="ruby-constant">FileUtils</span>.<span class="ruby-identifier">rm</span> <span class="ruby-identifier">exe_file</span> }
<span class="ruby-identifier">safe_delete</span> { <span class="ruby-constant">FileUtils</span>.<span class="ruby-identifier">rm</span> <span class="ruby-node">"#{exe_file}.bat"</span> }
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">say</span> <span class="ruby-string">"Executables and scripts will remain installed."</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-safe_delete" class="method-detail ">
<div class="method-heading">
<span class="method-name">safe_delete</span><span
class="method-args">(&block)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="safe_delete-source">
<pre><span class="ruby-comment"># File lib/rubygems/uninstaller.rb, line 346</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">safe_delete</span>(<span class="ruby-operator">&</span><span class="ruby-identifier">block</span>)
<span class="ruby-identifier">block</span>.<span class="ruby-identifier">call</span>
<span class="ruby-keyword">rescue</span> <span class="ruby-constant">Errno</span><span class="ruby-operator">::</span><span class="ruby-constant">ENOENT</span>
<span class="ruby-keyword">nil</span>
<span class="ruby-keyword">rescue</span> <span class="ruby-constant">Errno</span><span class="ruby-operator">::</span><span class="ruby-constant">EPERM</span>
<span class="ruby-identifier">e</span> = <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">UninstallError</span>.<span class="ruby-identifier">new</span>
<span class="ruby-identifier">e</span>.<span class="ruby-identifier">spec</span> = <span class="ruby-ivar">@spec</span>
<span class="ruby-identifier">raise</span> <span class="ruby-identifier">e</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-uninstall" class="method-detail ">
<div class="method-heading">
<span class="method-name">uninstall</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>Performs the uninstall of the gem. This removes the spec, the Gem directory, and the cached .gem file.</p>
<div class="method-source-code" id="uninstall-source">
<pre><span class="ruby-comment"># File lib/rubygems/uninstaller.rb, line 76</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">uninstall</span>
<span class="ruby-identifier">dependency</span> = <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">Dependency</span>.<span class="ruby-identifier">new</span> <span class="ruby-ivar">@gem</span>, <span class="ruby-ivar">@version</span>
<span class="ruby-identifier">list</span> = []
<span class="ruby-identifier">dirs</span> =
<span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">Specification</span>.<span class="ruby-identifier">dirs</span> <span class="ruby-operator">+</span>
[<span class="ruby-constant">Gem</span>.<span class="ruby-identifier">default_specifications_dir</span>]
<span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">Specification</span>.<span class="ruby-identifier">each_spec</span> <span class="ruby-identifier">dirs</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">spec</span><span class="ruby-operator">|</span>
<span class="ruby-keyword">next</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">dependency</span>.<span class="ruby-identifier">matches_spec?</span> <span class="ruby-identifier">spec</span>
<span class="ruby-identifier">list</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">spec</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">list</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">InstallError</span>, <span class="ruby-node">"gem #{@gem.inspect} is not installed"</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">default_specs</span>, <span class="ruby-identifier">list</span> = <span class="ruby-identifier">list</span>.<span class="ruby-identifier">partition</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">spec</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">spec</span>.<span class="ruby-identifier">default_gem?</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">default_specs</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">default_spec</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">say</span> <span class="ruby-node">"Gem #{default_spec.full_name} cannot be uninstalled because it is a default gem"</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">list</span>, <span class="ruby-identifier">other_repo_specs</span> = <span class="ruby-identifier">list</span>.<span class="ruby-identifier">partition</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">spec</span><span class="ruby-operator">|</span>
<span class="ruby-ivar">@gem_home</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">base_dir</span> <span class="ruby-keyword">or</span>
(<span class="ruby-ivar">@user_install</span> <span class="ruby-keyword">and</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">base_dir</span> <span class="ruby-operator">==</span> <span class="ruby-constant">Gem</span>.<span class="ruby-identifier">user_dir</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">list</span>.<span class="ruby-identifier">sort!</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">list</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-keyword">return</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">other_repo_specs</span>.<span class="ruby-identifier">any?</span>
<span class="ruby-identifier">other_repos</span> = <span class="ruby-identifier">other_repo_specs</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">spec</span><span class="ruby-operator">|</span> <span class="ruby-identifier">spec</span>.<span class="ruby-identifier">base_dir</span> }.<span class="ruby-identifier">uniq</span>
<span class="ruby-identifier">message</span> = [<span class="ruby-node">"#{@gem} is not installed in GEM_HOME, try:"</span>]
<span class="ruby-identifier">message</span>.<span class="ruby-identifier">concat</span> <span class="ruby-identifier">other_repos</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">repo</span><span class="ruby-operator">|</span>
<span class="ruby-node">"\tgem uninstall -i #{repo} #{@gem}"</span>
}
<span class="ruby-identifier">raise</span> <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">InstallError</span>, <span class="ruby-identifier">message</span>.<span class="ruby-identifier">join</span>(<span class="ruby-string">"\n"</span>)
<span class="ruby-keyword">elsif</span> <span class="ruby-ivar">@force_all</span>
<span class="ruby-identifier">remove_all</span> <span class="ruby-identifier">list</span>
<span class="ruby-keyword">elsif</span> <span class="ruby-identifier">list</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">></span> <span class="ruby-value">1</span>
<span class="ruby-identifier">gem_names</span> = <span class="ruby-identifier">list</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">gem</span><span class="ruby-operator">|</span> <span class="ruby-identifier">gem</span>.<span class="ruby-identifier">full_name</span> }
<span class="ruby-identifier">gem_names</span> <span class="ruby-operator"><<</span> <span class="ruby-string">"All versions"</span>
<span class="ruby-identifier">say</span>
<span class="ruby-identifier">_</span>, <span class="ruby-identifier">index</span> = <span class="ruby-identifier">choose_from_list</span> <span class="ruby-string">"Select gem to uninstall:"</span>, <span class="ruby-identifier">gem_names</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">index</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">list</span>.<span class="ruby-identifier">size</span>
<span class="ruby-identifier">remove_all</span> <span class="ruby-identifier">list</span>
<span class="ruby-keyword">elsif</span> <span class="ruby-identifier">index</span> <span class="ruby-operator">>=</span> <span class="ruby-value">0</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">index</span> <span class="ruby-operator"><</span> <span class="ruby-identifier">list</span>.<span class="ruby-identifier">size</span>
<span class="ruby-identifier">uninstall_gem</span> <span class="ruby-identifier">list</span>[<span class="ruby-identifier">index</span>]
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">say</span> <span class="ruby-node">"Error: must enter a number [1-#{list.size + 1}]"</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">uninstall_gem</span> <span class="ruby-identifier">list</span>.<span class="ruby-identifier">first</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-uninstall_gem" class="method-detail ">
<div class="method-heading">
<span class="method-name">uninstall_gem</span><span
class="method-args">(spec)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>Uninstalls gem <code>spec</code></p>
<div class="method-source-code" id="uninstall_gem-source">
<pre><span class="ruby-comment"># File lib/rubygems/uninstaller.rb, line 146</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">uninstall_gem</span>(<span class="ruby-identifier">spec</span>)
<span class="ruby-ivar">@spec</span> = <span class="ruby-identifier">spec</span>
<span class="ruby-keyword">unless</span> <span class="ruby-identifier">dependencies_ok?</span> <span class="ruby-identifier">spec</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">abort_on_dependent?</span> <span class="ruby-operator">||</span> <span class="ruby-operator">!</span><span class="ruby-identifier">ask_if_ok</span>(<span class="ruby-identifier">spec</span>)
<span class="ruby-identifier">raise</span> <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">DependencyRemovalException</span>,
<span class="ruby-string">"Uninstallation aborted due to dependent gem(s)"</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-constant">Gem</span>.<span class="ruby-identifier">pre_uninstall_hooks</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">hook</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">hook</span>.<span class="ruby-identifier">call</span> <span class="ruby-keyword">self</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">remove_executables</span> <span class="ruby-ivar">@spec</span>
<span class="ruby-identifier">remove</span> <span class="ruby-ivar">@spec</span>
<span class="ruby-constant">Gem</span>.<span class="ruby-identifier">post_uninstall_hooks</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">hook</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">hook</span>.<span class="ruby-identifier">call</span> <span class="ruby-keyword">self</span>
<span class="ruby-keyword">end</span>
<span class="ruby-ivar">@spec</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">end</span></pre>
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