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<title>Module: Erubis::HeaderFooterEnhancer</title>
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<td><strong>Module</strong></td>
<td class="class-name-in-header">Erubis::HeaderFooterEnhancer</td>
</tr>
<tr class="top-aligned-row">
<td><strong>In:</strong></td>
<td>
<a href="../../files/erubis/enhancer_rb.html">
erubis/enhancer.rb
</a>
<br />
</td>
</tr>
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<div id="contextContent">
<div id="description">
<dl>
<dt>experimental</dt><dd>allow header and footer in eRuby script
</dd>
</dl>
<p>
ex.
</p>
<pre>
====================
## without header and footer
$ cat ex1.eruby
<% def list_items(list) %>
<% for item in list %>
<li><%= item %></li>
<% end %>
<% end %>
$ erubis -s ex1.eruby
_buf = []; def list_items(list)
; for item in list
; _buf << '<li>'; _buf << ( item ).to_s; _buf << '</li>
'; end
; end
;
_buf.join
## with header and footer
$ cat ex2.eruby
<!--#header:
def list_items(list)
#-->
<% for item in list %>
<li><%= item %></li>
<% end %>
<!--#footer:
end
#-->
$ erubis -s -c HeaderFooterEruby ex4.eruby
def list_items(list)
_buf = []; _buf << '
'; for item in list
; _buf << '<li>'; _buf << ( item ).to_s; _buf << '</li>
'; end
; _buf << '
';
_buf.join
end
====================
</pre>
<p>
this is language-independent.
</p>
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<h3 class="section-bar">Methods</h3>
<div class="name-list">
<a href="#M000112">add_text</a>
<a href="#M000113">convert</a>
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</div>
</div>
<!-- if includes -->
<div id="section">
<div id="constants-list">
<h3 class="section-bar">Constants</h3>
<div class="name-list">
<table summary="Constants">
<tr class="top-aligned-row context-row">
<td class="context-item-name">HEADER_FOOTER_PATTERN</td>
<td>=</td>
<td class="context-item-value">/(.*?)(^[ \t]*)?<!--\#(\w+):(.*?)\#-->([ \t]*\r?\n)?/m</td>
</tr>
</table>
</div>
</div>
<div id="attribute-list">
<h3 class="section-bar">Attributes</h3>
<div class="name-list">
<table>
<tr class="top-aligned-row context-row">
<td class="context-item-name">footer</td>
<td class="context-item-value"> [RW] </td>
<td class="context-item-desc"></td>
</tr>
<tr class="top-aligned-row context-row">
<td class="context-item-name">header</td>
<td class="context-item-value"> [RW] </td>
<td class="context-item-desc"></td>
</tr>
</table>
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</div>
<!-- if method_list -->
<div id="methods">
<h3 class="section-bar">Public Instance methods</h3>
<div id="method-M000112" class="method-detail">
<a name="M000112"></a>
<div class="method-heading">
<a href="#M000112" 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('M000112-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000112-source">
<pre>
<span class="ruby-comment cmt"># File erubis/enhancer.rb, line 585</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-identifier">m</span> = <span class="ruby-keyword kw">nil</span>
<span class="ruby-identifier">text</span>.<span class="ruby-identifier">scan</span>(<span class="ruby-constant">HEADER_FOOTER_PATTERN</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">txt</span>, <span class="ruby-identifier">lspace</span>, <span class="ruby-identifier">word</span>, <span class="ruby-identifier">content</span>, <span class="ruby-identifier">rspace</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">m</span> = <span class="ruby-constant">Regexp</span>.<span class="ruby-identifier">last_match</span>
<span class="ruby-identifier">flag_trim</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-keyword kw">super</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">txt</span>)
<span class="ruby-identifier">content</span> = <span class="ruby-node">"#{lspace}#{content}#{rspace}"</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">flag_trim</span>
<span class="ruby-keyword kw">super</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">lspace</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-operator">!</span><span class="ruby-identifier">flag_trim</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">lspace</span>
<span class="ruby-identifier">instance_variable_set</span>(<span class="ruby-node">"@#{word}"</span>, <span class="ruby-identifier">content</span>)
<span class="ruby-keyword kw">super</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">rspace</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-operator">!</span><span class="ruby-identifier">flag_trim</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">rspace</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-comment cmt">#rest = $' || text # ruby1.8</span>
<span class="ruby-identifier">rest</span> = <span class="ruby-identifier">m</span> <span class="ruby-value">? </span><span class="ruby-identifier">text</span>[<span class="ruby-identifier">m</span>.<span class="ruby-identifier">end</span>(<span class="ruby-value">0</span>)<span class="ruby-operator">..</span><span class="ruby-value">-1</span>] <span class="ruby-operator">:</span> <span class="ruby-identifier">text</span> <span class="ruby-comment cmt"># ruby1.9</span>
<span class="ruby-keyword kw">super</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">rest</span>)
<span class="ruby-keyword kw">end</span>
</pre>
</div>
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</div>
<div id="method-M000113" class="method-detail">
<a name="M000113"></a>
<div class="method-heading">
<a href="#M000113" class="method-signature">
<span class="method-name">convert</span><span class="method-args">(input)</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000113-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000113-source">
<pre>
<span class="ruby-comment cmt"># File erubis/enhancer.rb, line 603</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">convert</span>(<span class="ruby-identifier">input</span>)
<span class="ruby-identifier">source</span> = <span class="ruby-keyword kw">super</span>
<span class="ruby-keyword kw">return</span> <span class="ruby-ivar">@src</span> = <span class="ruby-node">"#{@header}#{source}#{@footer}"</span>
<span class="ruby-keyword kw">end</span>
</pre>
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