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Module: Runners
— Documentation by YARD 0.9.19
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<div id="content"><h1>Module: Runners
</h1>
<div class="box_info">
<dl>
<dt>Included in:</dt>
<dd><span class='object_link'><a href="CMake.html" title="CMake (module)">CMake</a></span>, <span class='object_link'><a href="Lcov.html" title="Lcov (module)">Lcov</a></span>, <span class='object_link'><a href="PotentialBuild.html" title="PotentialBuild (class)">PotentialBuild</a></span></dd>
</dl>
<dl>
<dt>Defined in:</dt>
<dd>lib/runners.rb</dd>
</dl>
</div>
<h2>Overview</h2><div class="docstring">
<div class="discussion">
<p>captures functions to run commands on the system</p>
</div>
</div>
<div class="tags">
</div>
<h2>
Instance Method Summary
<small><a href="#" class="summary_toggle">collapse</a></small>
</h2>
<ul class="summary">
<li class="public ">
<span class="summary_signature">
<a href="#monitor_thread_state-instance_method" title="#monitor_thread_state (instance method)">#<strong>monitor_thread_state</strong>(timeout, thread, tick, stdout, stderr) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#read_state_singular-instance_method" title="#read_state_singular (instance method)">#<strong>read_state_singular</strong>(stdout, stderr, tick, out, err) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#run_scripts-instance_method" title="#run_scripts (instance method)">#<strong>run_scripts</strong>(this_config, commands, env = {}) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#run_single_script-instance_method" title="#run_single_script (instance method)">#<strong>run_single_script</strong>(this_config, cmd, env) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#run_with_timeout-instance_method" title="#run_with_timeout (instance method)">#<strong>run_with_timeout</strong>(env, command, timeout = 60 * 60 * 4, tick = 2) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>originally from <a href="https://gist.github.com/lpar/1032297">gist.github.com/lpar/1032297</a> runs a specified shell command in a separate thread.</p>
</div></span>
</li>
</ul>
<div id="instance_method_details" class="method_details_list">
<h2>Instance Method Details</h2>
<div class="method_details first">
<h3 class="signature first" id="monitor_thread_state-instance_method">
#<strong>monitor_thread_state</strong>(timeout, thread, tick, stdout, stderr) ⇒ <tt>Object</tt>
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<pre class="code"><span class="info file"># File 'lib/runners.rb', line 66</span>
<span class='kw'>def</span> <span class='id identifier rubyid_monitor_thread_state'>monitor_thread_state</span><span class='lparen'>(</span><span class='id identifier rubyid_timeout'>timeout</span><span class='comma'>,</span> <span class='id identifier rubyid_thread'>thread</span><span class='comma'>,</span> <span class='id identifier rubyid_tick'>tick</span><span class='comma'>,</span> <span class='id identifier rubyid_stdout'>stdout</span><span class='comma'>,</span> <span class='id identifier rubyid_stderr'>stderr</span><span class='rparen'>)</span>
<span class='id identifier rubyid_pid'>pid</span> <span class='op'>=</span> <span class='id identifier rubyid_thread'>thread</span><span class='lbracket'>[</span><span class='symbol'>:pid</span><span class='rbracket'>]</span>
<span class='id identifier rubyid_start'>start</span> <span class='op'>=</span> <span class='const'>Time</span><span class='period'>.</span><span class='id identifier rubyid_now'>now</span>
<span class='id identifier rubyid_out'>out</span> <span class='op'>=</span> <span class='const'>String</span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span> <span class='comment'># rubocop:disable Performance/UnfreezeString:
</span> <span class='id identifier rubyid_err'>err</span> <span class='op'>=</span> <span class='const'>String</span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span> <span class='comment'># rubocop:disable Performance/UnfreezeString:
</span> <span class='kw'>while</span> <span class='lparen'>(</span><span class='const'>Time</span><span class='period'>.</span><span class='id identifier rubyid_now'>now</span> <span class='op'>-</span> <span class='id identifier rubyid_start'>start</span><span class='rparen'>)</span> <span class='op'><</span> <span class='id identifier rubyid_timeout'>timeout</span> <span class='op'>&&</span> <span class='id identifier rubyid_thread'>thread</span><span class='period'>.</span><span class='id identifier rubyid_alive?'>alive?</span>
<span class='id identifier rubyid_out'>out</span><span class='comma'>,</span> <span class='id identifier rubyid_err'>err</span><span class='comma'>,</span> <span class='id identifier rubyid_this_break'>this_break</span> <span class='op'>=</span> <span class='id identifier rubyid_read_state_singular'>read_state_singular</span><span class='lparen'>(</span><span class='id identifier rubyid_stdout'>stdout</span><span class='comma'>,</span> <span class='id identifier rubyid_stderr'>stderr</span><span class='comma'>,</span> <span class='id identifier rubyid_tick'>tick</span><span class='comma'>,</span> <span class='id identifier rubyid_out'>out</span><span class='comma'>,</span> <span class='id identifier rubyid_err'>err</span><span class='rparen'>)</span>
<span class='kw'>break</span> <span class='kw'>if</span> <span class='id identifier rubyid_this_break'>this_break</span>
<span class='kw'>end</span>
<span class='comment'># Give Ruby time to clean up the other thread
</span> <span class='id identifier rubyid_sleep'>sleep</span> <span class='int'>1</span>
<span class='kw'>if</span> <span class='id identifier rubyid_thread'>thread</span><span class='period'>.</span><span class='id identifier rubyid_alive?'>alive?</span> <span class='comment'># We need to kill the process, because killing the thread leaves
</span> <span class='comment'># the process alive but detached, annoyingly enough.
</span> <span class='comment'># :nocov: I cannot figure out how to reproduce this right now
</span>
<span class='const'>Process</span><span class='period'>.</span><span class='id identifier rubyid_kill'>kill</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>'</span><span class='tstring_content'>TERM</span><span class='tstring_end'>'</span></span><span class='comma'>,</span> <span class='id identifier rubyid_pid'>pid</span><span class='rparen'>)</span> <span class='comment'># :nocov:
</span>
<span class='kw'>end</span>
<span class='lbracket'>[</span><span class='id identifier rubyid_out'>out</span><span class='comma'>,</span> <span class='id identifier rubyid_err'>err</span><span class='rbracket'>]</span>
<span class='kw'>end</span></pre>
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<div class="method_details ">
<h3 class="signature " id="read_state_singular-instance_method">
#<strong>read_state_singular</strong>(stdout, stderr, tick, out, err) ⇒ <tt>Object</tt>
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<pre class="code"><span class="info file"># File 'lib/runners.rb', line 89</span>
<span class='kw'>def</span> <span class='id identifier rubyid_read_state_singular'>read_state_singular</span><span class='lparen'>(</span><span class='id identifier rubyid_stdout'>stdout</span><span class='comma'>,</span> <span class='id identifier rubyid_stderr'>stderr</span><span class='comma'>,</span> <span class='id identifier rubyid_tick'>tick</span><span class='comma'>,</span> <span class='id identifier rubyid_out'>out</span><span class='comma'>,</span> <span class='id identifier rubyid_err'>err</span><span class='rparen'>)</span>
<span class='id identifier rubyid_this_break'>this_break</span> <span class='op'>=</span> <span class='kw'>false</span> <span class='comment'># Wait up to `tick` seconds for output/error data
</span>
<span class='id identifier rubyid_rs'>rs</span><span class='comma'>,</span> <span class='op'>=</span> <span class='const'>Kernel</span><span class='period'>.</span><span class='id identifier rubyid_select'>select</span><span class='lparen'>(</span><span class='lbracket'>[</span><span class='id identifier rubyid_stdout'>stdout</span><span class='comma'>,</span> <span class='id identifier rubyid_stderr'>stderr</span><span class='rbracket'>]</span><span class='comma'>,</span> <span class='kw'>nil</span><span class='comma'>,</span> <span class='kw'>nil</span><span class='comma'>,</span> <span class='id identifier rubyid_tick'>tick</span><span class='rparen'>)</span> <span class='comment'># Try to read the data
</span>
<span class='kw'>begin</span>
<span class='id identifier rubyid_rs'>rs</span><span class='op'>&.</span><span class='id identifier rubyid_each'>each</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_r'>r</span><span class='op'>|</span>
<span class='kw'>if</span> <span class='id identifier rubyid_r'>r</span> <span class='op'>==</span> <span class='id identifier rubyid_stdout'>stdout</span>
<span class='id identifier rubyid_out'>out</span> <span class='op'><<</span> <span class='id identifier rubyid_stdout'>stdout</span><span class='period'>.</span><span class='id identifier rubyid_read_nonblock'>read_nonblock</span><span class='lparen'>(</span><span class='int'>4096</span><span class='rparen'>)</span>
<span class='kw'>elsif</span> <span class='id identifier rubyid_r'>r</span> <span class='op'>==</span> <span class='id identifier rubyid_stderr'>stderr</span>
<span class='id identifier rubyid_err'>err</span> <span class='op'><<</span> <span class='id identifier rubyid_stderr'>stderr</span><span class='period'>.</span><span class='id identifier rubyid_read_nonblock'>read_nonblock</span><span class='lparen'>(</span><span class='int'>4096</span><span class='rparen'>)</span>
<span class='kw'>end</span>
<span class='kw'>end</span>
<span class='kw'>rescue</span> <span class='const'>IO</span><span class='op'>::</span><span class='const'>WaitReadable</span> <span class='comment'># rubocop:disable Lint/SuppressedException
</span> <span class='comment'># A read would block, so loop around for another select
</span> <span class='kw'>rescue</span> <span class='const'>EOFError</span> <span class='comment'># Command has completed, not really an error...
</span>
<span class='id identifier rubyid_this_break'>this_break</span> <span class='op'>=</span> <span class='kw'>true</span>
<span class='kw'>end</span>
<span class='lbracket'>[</span><span class='id identifier rubyid_out'>out</span><span class='comma'>,</span> <span class='id identifier rubyid_err'>err</span><span class='comma'>,</span> <span class='id identifier rubyid_this_break'>this_break</span><span class='rbracket'>]</span>
<span class='kw'>end</span></pre>
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</table>
</div>
<div class="method_details ">
<h3 class="signature " id="run_scripts-instance_method">
#<strong>run_scripts</strong>(this_config, commands, env = {}) ⇒ <tt>Object</tt>
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<pre class="code"><span class="info file"># File 'lib/runners.rb', line 7</span>
<span class='kw'>def</span> <span class='id identifier rubyid_run_scripts'>run_scripts</span><span class='lparen'>(</span><span class='id identifier rubyid_this_config'>this_config</span><span class='comma'>,</span> <span class='id identifier rubyid_commands'>commands</span><span class='comma'>,</span> <span class='id identifier rubyid_env'>env</span> <span class='op'>=</span> <span class='lbrace'>{</span><span class='rbrace'>}</span><span class='rparen'>)</span>
<span class='id identifier rubyid_all_out'>all_out</span> <span class='op'>=</span> <span class='const'>String</span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span> <span class='comment'># rubocop:disable Performance/UnfreezeString: Too much burden to unfreeze everywhere
</span> <span class='id identifier rubyid_all_err'>all_err</span> <span class='op'>=</span> <span class='const'>String</span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span> <span class='comment'># rubocop:disable Performance/UnfreezeString:
</span> <span class='id identifier rubyid_all_result'>all_result</span> <span class='op'>=</span> <span class='int'>0</span>
<span class='id identifier rubyid_commands'>commands</span><span class='period'>.</span><span class='id identifier rubyid_each'>each</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_cmd'>cmd</span><span class='op'>|</span>
<span class='id identifier rubyid_out_this_cmd'>out_this_cmd</span><span class='comma'>,</span> <span class='id identifier rubyid_err_this_cmd'>err_this_cmd</span><span class='comma'>,</span> <span class='id identifier rubyid_result_this_command'>result_this_command</span> <span class='op'>=</span> <span class='id identifier rubyid_run_single_script'>run_single_script</span><span class='lparen'>(</span><span class='id identifier rubyid_this_config'>this_config</span><span class='comma'>,</span> <span class='id identifier rubyid_cmd'>cmd</span><span class='comma'>,</span> <span class='id identifier rubyid_env'>env</span><span class='rparen'>)</span>
<span class='gvar'>$logger</span><span class='period'>.</span><span class='id identifier rubyid_error'>error</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>"</span><span class='tstring_content'>Error running script command: </span><span class='embexpr_beg'>#{</span><span class='id identifier rubyid_cmd'>cmd</span><span class='embexpr_end'>}</span><span class='tstring_end'>"</span></span><span class='rparen'>)</span> <span class='kw'>unless</span> <span class='id identifier rubyid_result_this_command'>result_this_command</span><span class='period'>.</span><span class='id identifier rubyid_exitstatus'>exitstatus</span><span class='period'>.</span><span class='id identifier rubyid_zero?'>zero?</span>
<span class='id identifier rubyid_all_out'>all_out</span> <span class='op'>+=</span> <span class='id identifier rubyid_out_this_cmd'>out_this_cmd</span>
<span class='id identifier rubyid_all_err'>all_err</span> <span class='op'>+=</span> <span class='id identifier rubyid_err_this_cmd'>err_this_cmd</span>
<span class='id identifier rubyid_all_result'>all_result</span> <span class='op'>+=</span> <span class='id identifier rubyid_result_this_command'>result_this_command</span><span class='period'>.</span><span class='id identifier rubyid_exitstatus'>exitstatus</span>
<span class='kw'>end</span>
<span class='lbracket'>[</span><span class='id identifier rubyid_all_out'>all_out</span><span class='comma'>,</span> <span class='id identifier rubyid_all_err'>all_err</span><span class='comma'>,</span> <span class='id identifier rubyid_all_result'>all_result</span><span class='rbracket'>]</span>
<span class='kw'>end</span></pre>
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<div class="method_details ">
<h3 class="signature " id="run_single_script-instance_method">
#<strong>run_single_script</strong>(this_config, cmd, env) ⇒ <tt>Object</tt>
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<pre class="code"><span class="info file"># File 'lib/runners.rb', line 25</span>
<span class='kw'>def</span> <span class='id identifier rubyid_run_single_script'>run_single_script</span><span class='lparen'>(</span><span class='id identifier rubyid_this_config'>this_config</span><span class='comma'>,</span> <span class='id identifier rubyid_cmd'>cmd</span><span class='comma'>,</span> <span class='id identifier rubyid_env'>env</span><span class='rparen'>)</span>
<span class='kw'>if</span> <span class='id identifier rubyid_this_config'>this_config</span><span class='period'>.</span><span class='id identifier rubyid_os'>os</span> <span class='op'>==</span> <span class='tstring'><span class='tstring_beg'>'</span><span class='tstring_content'>Windows</span><span class='tstring_end'>'</span></span> <span class='comment'># :nocov: Not testing on Windows
</span>
<span class='gvar'>$logger</span><span class='period'>.</span><span class='id identifier rubyid_debug'>debug</span> <span class='tstring'><span class='tstring_beg'>'</span><span class='tstring_content'>Unable to set timeout for process execution on windows</span><span class='tstring_end'>'</span></span>
<span class='id identifier rubyid_stdout'>stdout</span><span class='comma'>,</span> <span class='id identifier rubyid_stderr'>stderr</span><span class='comma'>,</span> <span class='id identifier rubyid_result'>result</span> <span class='op'>=</span> <span class='const'>Open3</span><span class='period'>.</span><span class='id identifier rubyid_capture3'>capture3</span><span class='lparen'>(</span><span class='id identifier rubyid_env'>env</span><span class='comma'>,</span> <span class='id identifier rubyid_cmd'>cmd</span><span class='rparen'>)</span> <span class='comment'># :nocov:
</span>
<span class='kw'>else</span>
<span class='comment'># allow up to 6 hours
</span> <span class='id identifier rubyid_stdout'>stdout</span><span class='comma'>,</span> <span class='id identifier rubyid_stderr'>stderr</span><span class='comma'>,</span> <span class='id identifier rubyid_result'>result</span> <span class='op'>=</span> <span class='id identifier rubyid_run_with_timeout'>run_with_timeout</span><span class='lparen'>(</span><span class='id identifier rubyid_env'>env</span><span class='comma'>,</span> <span class='id identifier rubyid_cmd'>cmd</span><span class='comma'>,</span> <span class='int'>60</span> <span class='op'>*</span> <span class='int'>60</span> <span class='op'>*</span> <span class='int'>6</span><span class='rparen'>)</span>
<span class='kw'>end</span>
<span class='id identifier rubyid_stderr'>stderr</span><span class='period'>.</span><span class='id identifier rubyid_encode'>encode</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>'</span><span class='tstring_content'>UTF-8</span><span class='tstring_end'>'</span></span><span class='comma'>,</span> <span class='symbol'>:invalid</span> <span class='op'>=></span> <span class='symbol'>:replace</span><span class='rparen'>)</span><span class='period'>.</span><span class='id identifier rubyid_split'>split</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>"</span><span class='tstring_content'>\n</span><span class='tstring_end'>"</span></span><span class='rparen'>)</span><span class='period'>.</span><span class='id identifier rubyid_each'>each</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_l'>l</span><span class='op'>|</span>
<span class='gvar'>$logger</span><span class='period'>.</span><span class='id identifier rubyid_debug'>debug</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>"</span><span class='tstring_content'>cmd: </span><span class='embexpr_beg'>#{</span><span class='id identifier rubyid_cmd'>cmd</span><span class='embexpr_end'>}</span><span class='tstring_content'>: stderr: </span><span class='embexpr_beg'>#{</span><span class='id identifier rubyid_l'>l</span><span class='embexpr_end'>}</span><span class='tstring_end'>"</span></span><span class='rparen'>)</span>
<span class='kw'>end</span>
<span class='lbracket'>[</span><span class='id identifier rubyid_stdout'>stdout</span><span class='comma'>,</span> <span class='id identifier rubyid_stderr'>stderr</span><span class='comma'>,</span> <span class='id identifier rubyid_result'>result</span><span class='rbracket'>]</span>
<span class='kw'>end</span></pre>
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<div class="method_details ">
<h3 class="signature " id="run_with_timeout-instance_method">
#<strong>run_with_timeout</strong>(env, command, timeout = 60 * 60 * 4, tick = 2) ⇒ <tt>Object</tt>
</h3><div class="docstring">
<div class="discussion">
<p>originally from <a href="https://gist.github.com/lpar/1032297">gist.github.com/lpar/1032297</a> runs a specified shell command in a separate thread. If it exceeds the given timeout in seconds, kills it. Returns any output produced by the command (stdout or stderr) as a String. Uses Kernel.select to wait up to the tick length (in seconds) between checks on the command's status</p>
<p>If you've got a cleaner way of doing this, I'd be interested to see it. If you think you can do it with Ruby's Timeout module, think again.</p>
</div>
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<pre class="code"><span class="info file"># File 'lib/runners.rb', line 52</span>
<span class='kw'>def</span> <span class='id identifier rubyid_run_with_timeout'>run_with_timeout</span><span class='lparen'>(</span><span class='id identifier rubyid_env'>env</span><span class='comma'>,</span> <span class='id identifier rubyid_command'>command</span><span class='comma'>,</span> <span class='id identifier rubyid_timeout'>timeout</span> <span class='op'>=</span> <span class='int'>60</span> <span class='op'>*</span> <span class='int'>60</span> <span class='op'>*</span> <span class='int'>4</span><span class='comma'>,</span> <span class='id identifier rubyid_tick'>tick</span> <span class='op'>=</span> <span class='int'>2</span><span class='rparen'>)</span>
<span class='kw'>begin</span>
<span class='comment'># Start task in another thread, which spawns a process
</span> <span class='id identifier rubyid_stdin'>stdin</span><span class='comma'>,</span> <span class='id identifier rubyid_stdout'>stdout</span><span class='comma'>,</span> <span class='id identifier rubyid_stderr'>stderr</span><span class='comma'>,</span> <span class='id identifier rubyid_thread'>thread</span> <span class='op'>=</span> <span class='const'>Open3</span><span class='period'>.</span><span class='id identifier rubyid_popen3'>popen3</span><span class='lparen'>(</span><span class='id identifier rubyid_env'>env</span><span class='comma'>,</span> <span class='id identifier rubyid_command'>command</span><span class='rparen'>)</span> <span class='comment'># Start watching the original running thread and watching output
</span>
<span class='id identifier rubyid_out'>out</span><span class='comma'>,</span> <span class='id identifier rubyid_err'>err</span> <span class='op'>=</span> <span class='id identifier rubyid_monitor_thread_state'>monitor_thread_state</span><span class='lparen'>(</span><span class='id identifier rubyid_timeout'>timeout</span><span class='comma'>,</span> <span class='id identifier rubyid_thread'>thread</span><span class='comma'>,</span> <span class='id identifier rubyid_tick'>tick</span><span class='comma'>,</span> <span class='id identifier rubyid_stdout'>stdout</span><span class='comma'>,</span> <span class='id identifier rubyid_stderr'>stderr</span><span class='rparen'>)</span>
<span class='kw'>ensure</span>
<span class='id identifier rubyid_stdin'>stdin</span><span class='op'>&.</span><span class='id identifier rubyid_close'>close</span>
<span class='id identifier rubyid_stdout'>stdout</span><span class='op'>&.</span><span class='id identifier rubyid_close'>close</span>
<span class='id identifier rubyid_stderr'>stderr</span><span class='op'>&.</span><span class='id identifier rubyid_close'>close</span>
<span class='kw'>end</span>
<span class='lbracket'>[</span><span class='id identifier rubyid_out'>out</span><span class='period'>.</span><span class='id identifier rubyid_force_encoding'>force_encoding</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>'</span><span class='tstring_content'>UTF-8</span><span class='tstring_end'>'</span></span><span class='rparen'>)</span><span class='comma'>,</span> <span class='id identifier rubyid_err'>err</span><span class='period'>.</span><span class='id identifier rubyid_force_encoding'>force_encoding</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>'</span><span class='tstring_content'>UTF-8</span><span class='tstring_end'>'</span></span><span class='rparen'>)</span><span class='comma'>,</span> <span class='id identifier rubyid_thread'>thread</span><span class='period'>.</span><span class='id identifier rubyid_value'>value</span><span class='rbracket'>]</span>
<span class='kw'>end</span></pre>
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Generated on Thu May 18 10:34:59 2023 by
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0.9.19 (ruby-2.7.0).
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