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<title>Module: Erubis::InterpolationEnhancer</title>
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<td><strong>Module</strong></td>
<td class="class-name-in-header">Erubis::InterpolationEnhancer</td>
</tr>
<tr class="top-aligned-row">
<td><strong>In:</strong></td>
<td>
<a href="../../files/erubis/enhancer_rb.html">
erubis/enhancer.rb
</a>
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<div id="description">
<p>
convert "<h1><%=title%></h1>" into "_buf
<< %Q`<h1>#{title}</h1>`"
</p>
<p>
this is only for <a href="Eruby.html">Eruby</a>.
</p>
</div>
</div>
<div id="method-list">
<h3 class="section-bar">Methods</h3>
<div class="name-list">
<a href="#M000213">_add_text_to_str</a>
<a href="#M000214">add_expr_escaped</a>
<a href="#M000215">add_expr_literal</a>
<a href="#M000212">add_text</a>
<a href="#M000211">convert_input</a>
</div>
</div>
</div>
<!-- if includes -->
<div id="section">
<!-- if method_list -->
<div id="methods">
<h3 class="section-bar">Public Instance methods</h3>
<div id="method-M000213" class="method-detail">
<a name="M000213"></a>
<div class="method-heading">
<a href="#M000213" class="method-signature">
<span class="method-name">_add_text_to_str</span><span class="method-args">(str, text)</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000213-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000213-source">
<pre>
<span class="ruby-comment cmt"># File erubis/enhancer.rb, line 707</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">_add_text_to_str</span>(<span class="ruby-identifier">str</span>, <span class="ruby-identifier">text</span>)
<span class="ruby-keyword kw">return</span> <span class="ruby-keyword kw">if</span> <span class="ruby-operator">!</span><span class="ruby-identifier">text</span> <span class="ruby-operator">||</span> <span class="ruby-identifier">text</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-identifier">str</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">text</span>.<span class="ruby-identifier">gsub</span>(<span class="ruby-regexp re">/[`\#\\]/</span>, <span class="ruby-value str">'\\\\\&'</span>)
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div id="method-M000214" class="method-detail">
<a name="M000214"></a>
<div class="method-heading">
<a href="#M000214" class="method-signature">
<span class="method-name">add_expr_escaped</span><span class="method-args">(str, code)</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000214-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000214-source">
<pre>
<span class="ruby-comment cmt"># File erubis/enhancer.rb, line 712</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">add_expr_escaped</span>(<span class="ruby-identifier">str</span>, <span class="ruby-identifier">code</span>)
<span class="ruby-identifier">str</span> <span class="ruby-operator"><<</span> <span class="ruby-node">"\#{#{escaped_expr(code)}}"</span>
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div id="method-M000215" class="method-detail">
<a name="M000215"></a>
<div class="method-heading">
<a href="#M000215" class="method-signature">
<span class="method-name">add_expr_literal</span><span class="method-args">(str, code)</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000215-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000215-source">
<pre>
<span class="ruby-comment cmt"># File erubis/enhancer.rb, line 716</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">add_expr_literal</span>(<span class="ruby-identifier">str</span>, <span class="ruby-identifier">code</span>)
<span class="ruby-identifier">str</span> <span class="ruby-operator"><<</span> <span class="ruby-node">"\#{#{code}}"</span>
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div id="method-M000212" class="method-detail">
<a name="M000212"></a>
<div class="method-heading">
<a href="#M000212" class="method-signature">
<span class="method-name">add_text</span><span class="method-args">(src, text)</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000212-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000212-source">
<pre>
<span class="ruby-comment cmt"># File erubis/enhancer.rb, line 696</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">add_text</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">text</span>)
<span class="ruby-keyword kw">return</span> <span class="ruby-keyword kw">if</span> <span class="ruby-operator">!</span><span class="ruby-identifier">text</span> <span class="ruby-operator">||</span> <span class="ruby-identifier">text</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-comment cmt">#src << " _buf << %Q`" << text << "`;"</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">text</span>[<span class="ruby-value">-1</span>] <span class="ruby-operator">==</span> <span class="ruby-value">?\n</span>
<span class="ruby-identifier">text</span>[<span class="ruby-value">-1</span>] = <span class="ruby-value str">"\\n"</span>
<span class="ruby-identifier">src</span> <span class="ruby-operator"><<</span> <span class="ruby-node">" #{@bufvar} << %Q`#{text}`\n"</span>
<span class="ruby-keyword kw">else</span>
<span class="ruby-identifier">src</span> <span class="ruby-operator"><<</span> <span class="ruby-node">" #{@bufvar} << %Q`#{text}`;"</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div id="method-M000211" class="method-detail">
<a name="M000211"></a>
<div class="method-heading">
<a href="#M000211" class="method-signature">
<span class="method-name">convert_input</span><span class="method-args">(src, input)</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000211-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000211-source">
<pre>
<span class="ruby-comment cmt"># File erubis/enhancer.rb, line 641</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">convert_input</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">input</span>)
<span class="ruby-identifier">pat</span> = <span class="ruby-ivar">@pattern</span>
<span class="ruby-identifier">regexp</span> = <span class="ruby-identifier">pat</span>.<span class="ruby-identifier">nil?</span> <span class="ruby-operator">||</span> <span class="ruby-identifier">pat</span> <span class="ruby-operator">==</span> <span class="ruby-value str">'<% %>'</span> <span class="ruby-operator">?</span> <span class="ruby-constant">Basic</span><span class="ruby-operator">::</span><span class="ruby-constant">Converter</span><span class="ruby-operator">::</span><span class="ruby-constant">DEFAULT_REGEXP</span> <span class="ruby-operator">:</span> <span class="ruby-identifier">pattern_regexp</span>(<span class="ruby-identifier">pat</span>)
<span class="ruby-identifier">pos</span> = <span class="ruby-value">0</span>
<span class="ruby-identifier">is_bol</span> = <span class="ruby-keyword kw">true</span> <span class="ruby-comment cmt"># is beginning of line</span>
<span class="ruby-identifier">str</span> = <span class="ruby-value str">''</span>
<span class="ruby-identifier">input</span>.<span class="ruby-identifier">scan</span>(<span class="ruby-identifier">regexp</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">indicator</span>, <span class="ruby-identifier">code</span>, <span class="ruby-identifier">tailch</span>, <span class="ruby-identifier">rspace</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">match</span> = <span class="ruby-constant">Regexp</span>.<span class="ruby-identifier">last_match</span>()
<span class="ruby-identifier">len</span> = <span class="ruby-identifier">match</span>.<span class="ruby-identifier">begin</span>(<span class="ruby-value">0</span>) <span class="ruby-operator">-</span> <span class="ruby-identifier">pos</span>
<span class="ruby-identifier">text</span> = <span class="ruby-identifier">input</span>[<span class="ruby-identifier">pos</span>, <span class="ruby-identifier">len</span>]
<span class="ruby-identifier">pos</span> = <span class="ruby-identifier">match</span>.<span class="ruby-identifier">end</span>(<span class="ruby-value">0</span>)
<span class="ruby-identifier">ch</span> = <span class="ruby-identifier">indicator</span> <span class="ruby-value">? </span><span class="ruby-identifier">indicator</span>[<span class="ruby-value">0</span>] <span class="ruby-operator">:</span> <span class="ruby-keyword kw">nil</span>
<span class="ruby-identifier">lspace</span> = <span class="ruby-identifier">ch</span> <span class="ruby-operator">==</span> <span class="ruby-value">?=</span> <span class="ruby-operator">?</span> <span class="ruby-keyword kw">nil</span> <span class="ruby-operator">:</span> <span class="ruby-identifier">detect_spaces_at_bol</span>(<span class="ruby-identifier">text</span>, <span class="ruby-identifier">is_bol</span>)
<span class="ruby-identifier">is_bol</span> = <span class="ruby-identifier">rspace</span> <span class="ruby-value">? </span><span class="ruby-keyword kw">true</span> <span class="ruby-operator">:</span> <span class="ruby-keyword kw">false</span>
<span class="ruby-identifier">_add_text_to_str</span>(<span class="ruby-identifier">str</span>, <span class="ruby-identifier">text</span>)
<span class="ruby-comment cmt">## * when '<%= %>', do nothing</span>
<span class="ruby-comment cmt">## * when '<% %>' or '<%# %>', delete spaces iff only spaces are around '<% %>'</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">ch</span> <span class="ruby-operator">==</span> <span class="ruby-value">?=</span> <span class="ruby-comment cmt"># <%= %></span>
<span class="ruby-identifier">rspace</span> = <span class="ruby-keyword kw">nil</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">tailch</span> <span class="ruby-operator">&&</span> <span class="ruby-operator">!</span><span class="ruby-identifier">tailch</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-identifier">str</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">lspace</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">lspace</span>
<span class="ruby-identifier">add_expr</span>(<span class="ruby-identifier">str</span>, <span class="ruby-identifier">code</span>, <span class="ruby-identifier">indicator</span>)
<span class="ruby-identifier">str</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">rspace</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">rspace</span>
<span class="ruby-keyword kw">elsif</span> <span class="ruby-identifier">ch</span> <span class="ruby-operator">==</span> <span class="ruby-value">?\#</span> <span class="ruby-comment cmt"># <%# %></span>
<span class="ruby-identifier">n</span> = <span class="ruby-identifier">code</span>.<span class="ruby-identifier">count</span>(<span class="ruby-value str">"\n"</span>) <span class="ruby-operator">+</span> (<span class="ruby-identifier">rspace</span> <span class="ruby-value">? </span><span class="ruby-value">1</span> <span class="ruby-operator">:</span> <span class="ruby-value">0</span>)
<span class="ruby-keyword kw">if</span> <span class="ruby-ivar">@trim</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">lspace</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">rspace</span>
<span class="ruby-identifier">add_text</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">str</span>)
<span class="ruby-identifier">str</span> = <span class="ruby-value str">''</span>
<span class="ruby-identifier">add_stmt</span>(<span class="ruby-identifier">src</span>, <span class="ruby-value str">"\n"</span> <span class="ruby-operator">*</span> <span class="ruby-identifier">n</span>)
<span class="ruby-keyword kw">else</span>
<span class="ruby-identifier">str</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">lspace</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">lspace</span>
<span class="ruby-identifier">add_text</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">str</span>)
<span class="ruby-identifier">str</span> = <span class="ruby-value str">''</span>
<span class="ruby-identifier">add_stmt</span>(<span class="ruby-identifier">src</span>, <span class="ruby-value str">"\n"</span> <span class="ruby-operator">*</span> <span class="ruby-identifier">n</span>)
<span class="ruby-identifier">str</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">rspace</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">rspace</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">else</span> <span class="ruby-comment cmt"># <% %></span>
<span class="ruby-keyword kw">if</span> <span class="ruby-ivar">@trim</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">lspace</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">rspace</span>
<span class="ruby-identifier">add_text</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">str</span>)
<span class="ruby-identifier">str</span> = <span class="ruby-value str">''</span>
<span class="ruby-identifier">add_stmt</span>(<span class="ruby-identifier">src</span>, <span class="ruby-node">"#{lspace}#{code}#{rspace}"</span>)
<span class="ruby-keyword kw">else</span>
<span class="ruby-identifier">str</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">lspace</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">lspace</span>
<span class="ruby-identifier">add_text</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">str</span>)
<span class="ruby-identifier">str</span> = <span class="ruby-value str">''</span>
<span class="ruby-identifier">add_stmt</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">code</span>)
<span class="ruby-identifier">str</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">rspace</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">rspace</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-comment cmt">#rest = $' || input # ruby1.8</span>
<span class="ruby-identifier">rest</span> = <span class="ruby-identifier">pos</span> <span class="ruby-operator">==</span> <span class="ruby-value">0</span> <span class="ruby-operator">?</span> <span class="ruby-identifier">input</span> <span class="ruby-operator">:</span> <span class="ruby-identifier">input</span>[<span class="ruby-identifier">pos</span><span class="ruby-operator">..</span><span class="ruby-value">-1</span>] <span class="ruby-comment cmt"># ruby1.9</span>
<span class="ruby-identifier">_add_text_to_str</span>(<span class="ruby-identifier">str</span>, <span class="ruby-identifier">rest</span>)
<span class="ruby-identifier">add_text</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">str</span>)
<span class="ruby-keyword kw">end</span>
</pre>
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