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<h1 class="class">class LineInput</h1>

<div id="description" class="description">

<p>$Id: lineinput.rb 2226 2006-04-15 03:05:09Z aamine $</p>

<p>Copyright © 2002-2005 Minero Aoki</p>

<p>This program is free software. You can distribute/modify this program under the terms of the GNU LGPL, Lesser General Public License version 2.1.</p>

</div><!-- description -->

<section id="5Buntitled-5D" class="documentation-section">

  <!-- Methods -->

   <section id="public-class-5Buntitled-5D-method-details" class="method-section section">
    <h3 class="section-header">Public Class Methods</h3>

    <div id="method-c-new" class="method-detail ">

      <div class="method-heading">
        <span class="method-name">new</span><span
          class="method-args">(f)</span>

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      <div class="method-description">

        <div class="method-source-code" id="new-source">
          <pre><span class="ruby-comment"># File lib/lineinput.rb, line 13</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>initialize</span>(<span class=“ruby-identifier”>f</span>)

<span class="ruby-ivar">@input</span> = <span class="ruby-identifier">f</span>
<span class="ruby-ivar">@buf</span> = []
<span class="ruby-ivar">@lineno</span> = <span class="ruby-value">0</span>
<span class="ruby-ivar">@eof_p</span> = <span class="ruby-keyword">false</span>

<span class=“ruby-keyword”>end</span></pre>

      </div><!-- new-source -->

    </div>

  </div><!-- new-method -->

</ection><!-- public-class-method-details -->

 <section id="public-instance-5Buntitled-5D-method-details" class="method-section section">
  <h3 class="section-header">Public Instance Methods</h3>

  <div id="method-i-break" class="method-detail method-alias">

    <div class="method-heading">
      <span class="method-name">break</pan><span
        class="method-args">(re)</span>

    </div>

    <div class="method-description">

    </div>

    <div class="aliases">
      Alias for: <a href="LineInput.html#method-i-getlines_until">getlines_until</a>
    </div>

  </div><!-- break-method -->

  <div id="method-i-each" class="method-detail ">

    <div class="method-heading">
      <span class="method-name">each</span><span
        class="method-args">() { |line| ... }</pan>

      <span class="method-click-advice">click to toggle source</span>

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    <div class="method-description">

      <div class="method-source-code" id="each-source">
        <pre><span class="ruby-comment"># File lib/lineinput.rb, line 91</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>each</span>

<span class="ruby-keyword">while</span> <span class="ruby-identifier">line</span> = <span class="ruby-identifier">gets</span>()
  <span class="ruby-keyword">yield</span> <span class="ruby-identifier">line</span>
<span class="ruby-keyword">end</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- each-source -->

  </div>

</div><!-- each-method -->

<div id="method-i-eof-3F" class="method-detail ">

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    <span class="method-name">eof?</span><span
      class="method-args">()</span>

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  <div class="method-description">

    <div class="method-source-code" id="eof-3F-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 24</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>eof?</span>

<span class="ruby-ivar">@eof_p</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- eof-3F-source -->

  </div>

</div><!-- eof-3F-method -->

<div id="method-i-getblock" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">getblock</span><span
      class="method-args">(term_re)</span>

    <span class="method-click-advice">click to toggle source</span>

  </div>

  <div class="method-description">

    <div class="method-source-code" id="getblock-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 147</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>getblock</span>(<span class=“ruby-identifier”>term_re</span>)

<span class="ruby-identifier">buf</span> = []
<span class="ruby-identifier">until_terminator</span>(<span class="ruby-identifier">term_re</span>) <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">line</span><span class="ruby-operator">|</span>
  <span class="ruby-identifier">buf</span>.<span class="ruby-identifier">push</span> <span class="ruby-identifier">line</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">buf</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- getblock-source -->

  </div>

</div><!-- getblock-method -->

<div id="method-i-getlines_until" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">getlines_until</span><span
      class="method-args">(re)</span>

    <span class="method-click-advice">click to toggle source</span>

  </div>

  <div class="method-description">

    <div class="method-source-code" id="getlines_until-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 129</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>getlines_until</span>(<span class=“ruby-identifier”>re</span>)

<span class="ruby-identifier">buf</span> = []
<span class="ruby-identifier">until_match</span>(<span class="ruby-identifier">re</span>) <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">line</span><span class="ruby-operator">|</span>
  <span class="ruby-identifier">buf</span>.<span class="ruby-identifier">push</span> <span class="ruby-identifier">line</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">buf</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- getlines_until-source -->

  </div>

  <div class="aliases">
    Also aliased as: <a href="LineInput.html#method-i-break">break</a>
  </div>

</div><!-- getlines_until-method -->

<div id="method-i-getlines_while" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">getlines_while</span><span
      class="method-args">(re)</span>

    <span class="method-click-advice">click to toggle source</span>

  </div>

  <div class="method-description">

    <div class="method-source-code" id="getlines_while-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 108</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>getlines_while</span>(<span class=“ruby-identifier”>re</span>)

<span class="ruby-identifier">buf</span> = []
<span class="ruby-identifier">while_match</span>(<span class="ruby-identifier">re</span>) <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">line</span><span class="ruby-operator">|</span>
  <span class="ruby-identifier">buf</span>.<span class="ruby-identifier">push</span> <span class="ruby-identifier">line</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">buf</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- getlines_while-source -->

  </div>

  <div class="aliases">
    Also aliased as: <a href="LineInput.html#method-i-span">span</a>
  </div>

</div><!-- getlines_while-method -->

<div id="method-i-gets" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">gets</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="gets-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 32</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>gets</span>

<span class="ruby-keyword">unless</span> <span class="ruby-ivar">@buf</span>.<span class="ruby-identifier">empty?</span>
  <span class="ruby-ivar">@lineno</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
  <span class="ruby-keyword">return</span> <span class="ruby-ivar">@buf</span>.<span class="ruby-identifier">pop</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span> <span class="ruby-keyword">if</span> <span class="ruby-ivar">@eof_p</span> <span class="ruby-comment"># to avoid ARGF blocking.</span>
<span class="ruby-identifier">line</span> = <span class="ruby-ivar">@input</span>.<span class="ruby-identifier">gets</span>
<span class="ruby-ivar">@eof_p</span> = <span class="ruby-keyword">true</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">line</span>
<span class="ruby-ivar">@lineno</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
<span class="ruby-identifier">line</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- gets-source -->

  </div>

</div><!-- gets-method -->

<div id="method-i-gets_if" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">gets_if</span><span
      class="method-args">(re)</span>

    <span class="method-click-advice">click to toggle source</span>

  </div>

  <div class="method-description">

    <div class="method-source-code" id="gets_if-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 73</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>gets_if</span>(<span class=“ruby-identifier”>re</span>)

<span class="ruby-identifier">line</span> = <span class="ruby-identifier">gets</span>()
<span class="ruby-keyword">if</span> <span class="ruby-keyword">not</span> <span class="ruby-identifier">line</span> <span class="ruby-keyword">or</span> <span class="ruby-keyword">not</span> (<span class="ruby-identifier">re</span> <span class="ruby-operator">=~</span> <span class="ruby-identifier">line</span>)
  <span class="ruby-identifier">ungets</span> <span class="ruby-identifier">line</span>
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">line</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- gets_if-source -->

  </div>

</div><!-- gets_if-method -->

<div id="method-i-gets_unless" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">gets_unless</span><span
      class="method-args">(re)</span>

    <span class="method-click-advice">click to toggle source</span>

  </div>

  <div class="method-description">

    <div class="method-source-code" id="gets_unless-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 82</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>gets_unless</span>(<span class=“ruby-identifier”>re</span>)

<span class="ruby-identifier">line</span> = <span class="ruby-identifier">gets</span>()
<span class="ruby-keyword">if</span> <span class="ruby-keyword">not</span> <span class="ruby-identifier">line</span> <span class="ruby-keyword">or</span> <span class="ruby-identifier">re</span> <span class="ruby-operator">=~</span> <span class="ruby-identifier">line</span>
  <span class="ruby-identifier">ungets</span> <span class="ruby-identifier">line</span>
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">line</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- gets_unless-source -->

  </div>

</div><!-- gets_unless-method -->

<div id="method-i-inspect" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">inspect</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="inspect-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 20</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>inspect</span>

<span class="ruby-node">&quot;\#&lt;#{self.class} file=#{@input.inspect} line=#{lineno()}&gt;&quot;</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- inspect-source -->

  </div>

</div><!-- inspect-method -->

<div id="method-i-lineno" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">lineno</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="lineno-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 28</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>lineno</span>

<span class="ruby-ivar">@lineno</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- lineno-source -->

  </div>

</div><!-- lineno-method -->

<div id="method-i-next-3F" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">next?</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="next-3F-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 57</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>next?</span>

<span class="ruby-identifier">peek</span>() <span class="ruby-operator">?</span> <span class="ruby-keyword">true</span> <span class="ruby-operator">:</span> <span class="ruby-keyword">false</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- next-3F-source -->

  </div>

</div><!-- next-3F-method -->

<div id="method-i-peek" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">peek</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="peek-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 51</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>peek</span>

<span class="ruby-identifier">line</span> = <span class="ruby-identifier">gets</span>()
<span class="ruby-identifier">ungets</span> <span class="ruby-identifier">line</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">line</span>
<span class="ruby-identifier">line</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- peek-source -->

  </div>

</div><!-- peek-method -->

<div id="method-i-skip_blank_lines" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">skip_blank_lines</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="skip_blank_lines-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 61</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>skip_blank_lines</span>

<span class="ruby-identifier">n</span> = <span class="ruby-value">0</span>
<span class="ruby-keyword">while</span> <span class="ruby-identifier">line</span> = <span class="ruby-identifier">gets</span>()
  <span class="ruby-keyword">unless</span> <span class="ruby-identifier">line</span>.<span class="ruby-identifier">strip</span>.<span class="ruby-identifier">empty?</span>
    <span class="ruby-identifier">ungets</span> <span class="ruby-identifier">line</span>
    <span class="ruby-keyword">return</span> <span class="ruby-identifier">n</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-identifier">n</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">n</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- skip_blank_lines-source -->

  </div>

</div><!-- skip_blank_lines-method -->

<div id="method-i-span" class="method-detail method-alias">

  <div class="method-heading">
    <span class="method-name">span</span><span
      class="method-args">(re)</span>

  </div>

  <div class="method-description">

  </div>

  <div class="aliases">
    Alias for: <a href="LineInput.html#method-i-getlines_while">getlines_while</a>
  </div>

</div><!-- span-method -->

<div id="method-i-ungets" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">ungets</span><span
      class="method-args">(line)</span>

    <span class="method-click-advice">click to toggle source</span>

  </div>

  <div class="method-description">

    <div class="method-source-code" id="ungets-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 44</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>ungets</span>(<span class=“ruby-identifier”>line</span>)

<span class="ruby-keyword">return</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">line</span>
<span class="ruby-ivar">@lineno</span> <span class="ruby-operator">-=</span> <span class="ruby-value">1</span>
<span class="ruby-ivar">@buf</span>.<span class="ruby-identifier">push</span> <span class="ruby-identifier">line</span>
<span class="ruby-identifier">line</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- ungets-source -->

  </div>

</div><!-- ungets-method -->

<div id="method-i-until_match" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">until_match</pan><span
      class="method-args">(re) { |line| ... }</span>

    <span class="method-click-advice">click to toggle source</pan>

  </div>

  <div class="method-description">

    <div class="method-source-code" id="until_match-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 118</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>until_match</span>(<span class=“ruby-identifier”>re</span>)

<span class="ruby-keyword">while</span> <span class="ruby-identifier">line</span> = <span class="ruby-identifier">gets</span>()
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">re</span> <span class="ruby-operator">=~</span> <span class="ruby-identifier">line</span>
    <span class="ruby-identifier">ungets</span> <span class="ruby-identifier">line</span>
    <span class="ruby-keyword">return</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">yield</span> <span class="ruby-identifier">line</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">nil</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- until_match-source -->

  </div>

</div><!-- until_match-method -->

<div id="method-i-until_terminator" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">until_terminator</pan><span
      class="method-args">(re) { |line| ... }</span>

    <span class="method-click-advice">click to toggle source</pan>

  </div>

  <div class="method-description">

    <div class="method-source-code" id="until_terminator-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 139</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>until_terminator</span>(<span class=“ruby-identifier”>re</span>)

<span class="ruby-keyword">while</span> <span class="ruby-identifier">line</span> = <span class="ruby-identifier">gets</span>()
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">re</span> <span class="ruby-operator">=~</span> <span class="ruby-identifier">line</span> <span class="ruby-comment"># discard terminal line</span>
  <span class="ruby-keyword">yield</span> <span class="ruby-identifier">line</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">nil</span>

<span class=“ruby-keyword”>end</span></pre>

    </div><!-- until_terminator-source -->

  </div>

</div><!-- until_terminator-method -->

<div id="method-i-while_match" class="method-detail ">

  <div class="method-heading">
    <span class="method-name">while_match</pan><span
      class="method-args">(re) { |line| ... }</span>

    <span class="method-click-advice">click to toggle source</pan>

  </div>

  <div class="method-description">

    <div class="method-source-code" id="while_match-source">
      <pre><span class="ruby-comment"># File lib/lineinput.rb, line 97</span>

<span class=“ruby-keyword”>def</span> <span class=“ruby-identifier”>while_match</span>(<span class=“ruby-identifier”>re</span>)

<span class="ruby-keyword">while</span> <span class="ruby-identifier">line</span> = <span class="ruby-identifier">gets</span>()
  <span class="ruby-keyword">unless</span> <span class="ruby-identifier">re</span> <span class="ruby-operator">=~</span> <span class="ruby-identifier">line</span>
    <span class="ruby-identifier">ungets</span> <span class="ruby-identifier">line</span>
    <span class="ruby-keyword">return</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">yield</span> <span class="ruby-identifier">line</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">nil</span>

<span class=“ruby-keyword”>end</span></pre>

        </div><!-- while_match-source -->

      </div>

    </div><!-- while_match-method -->

  </section><!-- public-instance-method-details -->

</section><!-- 5Buntitled-5D -->

</div><!– documentation –>

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