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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<title>Filenames</title>
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<!--Weave of 'Filenames' generated by Inweb-->
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="index.html">foundation</a></li><li><a href="index.html#3">Chapter 3: The Operating System</a></li><li><b>Filenames</b></li></ul></div>
<p class="purpose">Names of hypothetical or real files in the filing system.</p>
<ul class="toc"><li><a href="3-fln.html#SP1">&#167;1. Storage</a></li><li><a href="3-fln.html#SP2">&#167;2. Creation</a></li><li><a href="3-fln.html#SP3">&#167;3. Strings to filenames</a></li><li><a href="3-fln.html#SP4">&#167;4. The writer</a></li><li><a href="3-fln.html#SP6">&#167;6. Reading off the directory</a></li><li><a href="3-fln.html#SP7">&#167;7. Reading off the leafname</a></li><li><a href="3-fln.html#SP8">&#167;8. Filename extensions</a></li><li><a href="3-fln.html#SP9">&#167;9. Guessing file formats</a></li><li><a href="3-fln.html#SP10">&#167;10. Opening</a></li><li><a href="3-fln.html#SP11">&#167;11. Comparing</a></li><li><a href="3-fln.html#SP12">&#167;12. Timestamps and sizes</a></li></ul><hr class="tocbar">
<p class="commentary firstcommentary"><a id="SP1"></a><b>&#167;1. Storage. </b>Filename objects behave much like pathname ones, but they have their own
structure in order that the two are distinct C types. Individual filenames
are a single instance of the following. (Note that the text part is stored
as Unicode code points, regardless of what text encoding the locale has.)
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">filename</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">pathname</span><span class="plain-syntax"> *</span><span class="identifier-syntax">pathname_of_location</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">leafname</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="constant-syntax">CLASS_DEFINITION</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">filename</span><span class="plain-syntax">;</span>
</pre>
<ul class="endnotetexts"><li>The structure filename is private to this section.</li></ul>
<p class="commentary firstcommentary"><a id="SP2"></a><b>&#167;2. Creation. </b>A filename is made by supplying a pathname and a leafname.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="function-syntax">Filenames::in</span><button class="popup" onclick="togglePopup('usagePopup1')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup1">Usage of <span class="code-font"><span class="function-syntax">Filenames::in</span></span>:<br/><a href="3-fln.html#SP7">&#167;7</a>, <a href="3-fln.html#SP8">&#167;8</a><br/>Command Line Arguments - <a href="3-cla.html#SP13_1_1">&#167;13.1.1</a><br/>Epub Ebooks - <a href="5-ee.html#SP6">&#167;6</a>, <a href="5-ee.html#SP6_1">&#167;6.1</a>, <a href="5-ee.html#SP6_2">&#167;6.2</a>, <a href="5-ee.html#SP6_3">&#167;6.3</a>, <a href="5-ee.html#SP7_2">&#167;7.2</a>, <a href="5-ee.html#SP7_3">&#167;7.3</a>, <a href="5-ee.html#SP7_4">&#167;7.4</a><br/>Web Structure - <a href="8-ws.html#SP7_3_3_2">&#167;7.3.3.2</a>, <a href="8-ws.html#SP7_2_2_4">&#167;7.2.2.4</a>, <a href="8-ws.html#SP8">&#167;8</a><br/>Build Files - <a href="8-bf.html#SP1">&#167;1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">pathname</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="reserved-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">file_name</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="3-fln.html#SP2" class="function-link"><span class="function-syntax">Filenames::primitive</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">file_name</span><span class="plain-syntax">, </span><span class="constant-syntax">0</span><span class="plain-syntax">, </span><a href="4-sm.html#SP8" class="function-link"><span class="function-syntax">Str::len</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">file_name</span><span class="plain-syntax">), </span><span class="identifier-syntax">P</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="function-syntax">Filenames::primitive</span><button class="popup" onclick="togglePopup('usagePopup2')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup2">Usage of <span class="code-font"><span class="function-syntax">Filenames::primitive</span></span>:<br/><a href="3-fln.html#SP3">&#167;3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">from</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">to</span><span class="plain-syntax">, </span><span class="reserved-syntax">pathname</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_location</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">to</span><span class="plain-syntax">-</span><span class="identifier-syntax">from</span><span class="plain-syntax"> &lt;= </span><span class="constant-syntax">0</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"empty intermediate pathname"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">leafname</span><span class="plain-syntax"> = </span><a href="4-sm.html#SP2" class="function-link"><span class="function-syntax">Str::new_with_capacity</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">to</span><span class="plain-syntax">-</span><span class="identifier-syntax">from</span><span class="plain-syntax">+1);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">string_position</span><span class="plain-syntax"> </span><span class="identifier-syntax">pos</span><span class="plain-syntax"> = </span><a href="4-sm.html#SP10" class="function-link"><span class="function-syntax">Str::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">, </span><span class="identifier-syntax">from</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax"> = </span><span class="identifier-syntax">from</span><span class="plain-syntax">; </span><span class="identifier-syntax">i</span><span class="plain-syntax"> &lt; </span><span class="identifier-syntax">to</span><span class="plain-syntax">; </span><span class="identifier-syntax">i</span><span class="plain-syntax">++, </span><span class="identifier-syntax">pos</span><span class="plain-syntax"> = </span><a href="4-sm.html#SP11" class="function-link"><span class="function-syntax">Str::forward</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">PUT_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">leafname</span><span class="plain-syntax">, </span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">F</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP3"></a><b>&#167;3. Strings to filenames. </b>The following takes a textual name and returns a filename.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="function-syntax">Filenames::from_text</span><button class="popup" onclick="togglePopup('usagePopup3')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup3">Usage of <span class="code-font"><span class="function-syntax">Filenames::from_text</span></span>:<br/>Pathnames - <a href="3-pth.html#SP3">&#167;3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">path</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">, </span><span class="identifier-syntax">pos</span><span class="plain-syntax"> = -1;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">at</span><span class="plain-syntax">, </span><span class="identifier-syntax">path</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">at</span><span class="plain-syntax">) == </span><span class="constant-syntax">FOLDER_SEPARATOR</span><span class="plain-syntax">) </span><span class="identifier-syntax">pos</span><span class="plain-syntax"> = </span><span class="identifier-syntax">i</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax">++;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">pathname</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">pos</span><span class="plain-syntax"> &gt;= </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">PT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="4-sm.html#SP26" class="function-link"><span class="function-syntax">Str::substr</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">PT</span><span class="plain-syntax">, </span><a href="4-sm.html#SP10" class="function-link"><span class="function-syntax">Str::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">path</span><span class="plain-syntax">, </span><span class="constant-syntax">0</span><span class="plain-syntax">), </span><a href="4-sm.html#SP10" class="function-link"><span class="function-syntax">Str::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">path</span><span class="plain-syntax">, </span><span class="identifier-syntax">pos</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="3-pth.html#SP5" class="function-link"><span class="function-syntax">Pathnames::from_text</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">PT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">PT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="3-fln.html#SP2" class="function-link"><span class="function-syntax">Filenames::primitive</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">path</span><span class="plain-syntax">, </span><span class="identifier-syntax">pos</span><span class="plain-syntax">+1, </span><a href="4-sm.html#SP8" class="function-link"><span class="function-syntax">Str::len</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">path</span><span class="plain-syntax">), </span><span class="identifier-syntax">P</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="function-syntax">Filenames::from_text_relative</span><span class="plain-syntax">(</span><span class="reserved-syntax">pathname</span><span class="plain-syntax"> *</span><span class="identifier-syntax">from</span><span class="plain-syntax">, </span><span class="reserved-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">path</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax"> = </span><a href="3-fln.html#SP3" class="function-link"><span class="function-syntax">Filenames::from_text</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">path</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">from</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_location</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_location</span><span class="plain-syntax"> = </span><span class="identifier-syntax">from</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">pathname</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_location</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">P</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_parent</span><span class="plain-syntax">)) </span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_parent</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_parent</span><span class="plain-syntax"> = </span><span class="identifier-syntax">from</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">F</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP4"></a><b>&#167;4. The writer. </b>And conversely:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Filenames::writer</span><button class="popup" onclick="togglePopup('usagePopup4')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup4">Usage of <span class="code-font"><span class="function-syntax">Filenames::writer</span></span>:<br/>Foundation Module - <a href="1-fm.html#SP8_1">&#167;8.1</a></span></button><span class="plain-syntax">(</span><span class="constant-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">char</span><span class="plain-syntax"> *</span><span class="identifier-syntax">format_string</span><span class="plain-syntax">, </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">vF</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *) </span><span class="identifier-syntax">vF</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&lt;no file&gt;"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_location</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><a href="3-pth.html#SP6" class="function-link"><span class="function-syntax">Pathnames::writer</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">format_string</span><span class="plain-syntax">, (</span><span class="reserved-syntax">void</span><span class="plain-syntax"> *) </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_location</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">format_string</span><span class="plain-syntax">[0] == </span><span class="character-syntax">'/'</span><span class="plain-syntax">) </span><span class="identifier-syntax">PUT</span><span class="plain-syntax">(</span><span class="character-syntax">'/'</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">PUT</span><span class="plain-syntax">(</span><span class="constant-syntax">FOLDER_SEPARATOR</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">leafname</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP5"></a><b>&#167;5. </b>And again relative to a given pathname:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Filenames::to_text_relative</span><span class="plain-syntax">(</span><span class="constant-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="reserved-syntax">pathname</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">ft</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">pt</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">ft</span><span class="plain-syntax">, </span><span class="string-syntax">"%f"</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">pt</span><span class="plain-syntax">, </span><span class="string-syntax">"%p"</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">n</span><span class="plain-syntax"> = </span><a href="4-sm.html#SP8" class="function-link"><span class="function-syntax">Str::len</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pt</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><a href="4-sm.html#SP21" class="function-link"><span class="function-syntax">Str::prefix_eq</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ft</span><span class="plain-syntax">, </span><span class="identifier-syntax">pt</span><span class="plain-syntax">, </span><span class="identifier-syntax">n</span><span class="plain-syntax">)) &amp;&amp; (</span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get_at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ft</span><span class="plain-syntax">, </span><span class="identifier-syntax">n</span><span class="plain-syntax">)==</span><span class="constant-syntax">FOLDER_SEPARATOR</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><a href="4-sm.html#SP25" class="function-link"><span class="function-syntax">Str::delete_n_characters</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ft</span><span class="plain-syntax">, </span><span class="identifier-syntax">n</span><span class="plain-syntax">+1);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">ft</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"filename not relative to pathname"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">ft</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">pt</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP6"></a><b>&#167;6. Reading off the directory. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">pathname</span><span class="plain-syntax"> *</span><span class="function-syntax">Filenames::up</span><button class="popup" onclick="togglePopup('usagePopup5')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup5">Usage of <span class="code-font"><span class="function-syntax">Filenames::up</span></span>:<br/>Pathnames - <a href="3-pth.html#SP3">&#167;3</a><br/>Web Structure - <a href="8-ws.html#SP5_2">&#167;5.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_location</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP7"></a><b>&#167;7. Reading off the leafname. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="function-syntax">Filenames::without_path</span><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="3-fln.html#SP2" class="function-link"><span class="function-syntax">Filenames::in</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">leafname</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">Filenames::get_leafname</span><button class="popup" onclick="togglePopup('usagePopup6')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup6">Usage of <span class="code-font"><span class="function-syntax">Filenames::get_leafname</span></span>:<br/>HTML - <a href="5-htm.html#SP15">&#167;15</a><br/>Epub Ebooks - <a href="5-ee.html#SP7_2_2_1">&#167;7.2.2.1</a>, <a href="5-ee.html#SP7_2_2_2">&#167;7.2.2.2</a>, <a href="5-ee.html#SP7_2_4">&#167;7.2.4</a>, <a href="5-ee.html#SP7_3_2">&#167;7.3.2</a>, <a href="5-ee.html#SP7_3_2_1">&#167;7.3.2.1</a>, <a href="5-ee.html#SP7_3_2_2_1">&#167;7.3.2.2.1</a>, <a href="5-ee.html#SP7_4">&#167;7.4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">leafname</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Filenames::write_unextended_leafname</span><button class="popup" onclick="togglePopup('usagePopup7')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup7">Usage of <span class="code-font"><span class="function-syntax">Filenames::write_unextended_leafname</span></span>:<br/>Epub Ebooks - <a href="5-ee.html#SP5">&#167;5</a></span></button><span class="plain-syntax">(</span><span class="constant-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">leafname</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">wchar_t</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> == </span><span class="character-syntax">'.'</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">PUT</span><span class="plain-syntax">(</span><span class="identifier-syntax">c</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP8"></a><b>&#167;8. Filename extensions. </b>The following is cautiously written because of an oddity in Windows's handling
of filenames, which are allowed to have trailing dots or spaces, in a way
which isn't necessarily visible to the user, who may have added these by
an accidental brush of the keyboard. Thus <span class="extract"><span class="extract-syntax">frog.jpg .</span></span> should be treated
as equivalent to <span class="extract"><span class="extract-syntax">frog.jpg</span></span> when deciding the likely file format.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Filenames::write_extension</span><button class="popup" onclick="togglePopup('usagePopup8')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup8">Usage of <span class="code-font"><span class="function-syntax">Filenames::write_extension</span></span>:<br/><a href="3-fln.html#SP9">&#167;9</a></span></button><span class="plain-syntax">(</span><span class="constant-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">on</span><span class="plain-syntax"> = </span><span class="constant-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">leafname</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">wchar_t</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> == </span><span class="character-syntax">'.'</span><span class="plain-syntax">) </span><span class="identifier-syntax">on</span><span class="plain-syntax"> = </span><span class="constant-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">on</span><span class="plain-syntax">) </span><span class="identifier-syntax">PUT</span><span class="plain-syntax">(</span><span class="identifier-syntax">c</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="function-syntax">Filenames::set_extension</span><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="reserved-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">extension</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">NEWLEAF</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">leafname</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">wchar_t</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> == </span><span class="character-syntax">'.'</span><span class="plain-syntax">) </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">PUT_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">NEWLEAF</span><span class="plain-syntax">, </span><span class="identifier-syntax">c</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP8" class="function-link"><span class="function-syntax">Str::len</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">extension</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get_first_char</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">extension</span><span class="plain-syntax">) != </span><span class="character-syntax">'.'</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">NEWLEAF</span><span class="plain-syntax">, </span><span class="string-syntax">"."</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">NEWLEAF</span><span class="plain-syntax">, </span><span class="string-syntax">"%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">extension</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">N</span><span class="plain-syntax"> = </span><a href="3-fln.html#SP2" class="function-link"><span class="function-syntax">Filenames::in</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pathname_of_location</span><span class="plain-syntax">, </span><span class="identifier-syntax">NEWLEAF</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">NEWLEAF</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">N</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP9"></a><b>&#167;9. Guessing file formats. </b>The following guesses the file format from its file extension:
</p>
<pre class="definitions code-font"><span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_HTML</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_JPEG</span><span class="plain-syntax"> </span><span class="constant-syntax">2</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_PNG</span><span class="plain-syntax"> </span><span class="constant-syntax">3</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_OGG</span><span class="plain-syntax"> </span><span class="constant-syntax">4</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_AIFF</span><span class="plain-syntax"> </span><span class="constant-syntax">5</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_MIDI</span><span class="plain-syntax"> </span><span class="constant-syntax">6</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_MOD</span><span class="plain-syntax"> </span><span class="constant-syntax">7</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_GLULX</span><span class="plain-syntax"> </span><span class="constant-syntax">8</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_ZCODE</span><span class="plain-syntax"> </span><span class="constant-syntax">9</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_SVG</span><span class="plain-syntax"> </span><span class="constant-syntax">10</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_PERHAPS_GIF</span><span class="plain-syntax"> </span><span class="constant-syntax">11</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">FORMAT_UNRECOGNISED</span><span class="plain-syntax"> </span><span class="constant-syntax">0</span>
</pre>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Filenames::guess_format</span><button class="popup" onclick="togglePopup('usagePopup9')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup9">Usage of <span class="code-font"><span class="function-syntax">Filenames::guess_format</span></span>:<br/>Epub Ebooks - <a href="5-ee.html#SP7_2_2_3">&#167;7.2.2.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">EXT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="3-fln.html#SP8" class="function-link"><span class="function-syntax">Filenames::write_extension</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">EXT</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">, </span><span class="identifier-syntax">EXT</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">wchar_t</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> != </span><span class="character-syntax">' '</span><span class="plain-syntax">) </span><span class="identifier-syntax">PUT_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><a href="4-chr.html#SP1" class="function-link"><span class="function-syntax">Characters::tolower</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">c</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">EXT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_UNRECOGNISED</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".html"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_HTML</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".htm"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_HTML</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".jpg"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_JPEG</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".jpeg"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_JPEG</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".png"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_PNG</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".ogg"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_OGG</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".aiff"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_AIFF</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".aif"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_AIFF</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".midi"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_MIDI</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".mid"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_MIDI</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".mod"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_MOD</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".svg"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_SVG</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP22" class="function-link"><span class="function-syntax">Str::eq_wide_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">".gif"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_GIF</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP8" class="function-link"><span class="function-syntax">Str::len</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get</span></a><span class="plain-syntax">(</span><a href="4-sm.html#SP10" class="function-link"><span class="function-syntax">Str::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="constant-syntax">0</span><span class="plain-syntax">)) == </span><span class="character-syntax">'.'</span><span class="plain-syntax">) &amp;&amp;</span>
<span class="plain-syntax"> (</span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get</span></a><span class="plain-syntax">(</span><a href="4-sm.html#SP10" class="function-link"><span class="function-syntax">Str::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="constant-syntax">1</span><span class="plain-syntax">)) == </span><span class="character-syntax">'z'</span><span class="plain-syntax">) &amp;&amp;</span>
<span class="plain-syntax"> (</span><a href="4-chr.html#SP1" class="function-link"><span class="function-syntax">Characters::isdigit</span></a><span class="plain-syntax">(</span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get</span></a><span class="plain-syntax">(</span><a href="4-sm.html#SP10" class="function-link"><span class="function-syntax">Str::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">, </span><span class="constant-syntax">2</span><span class="plain-syntax">)))) &amp;&amp;</span>
<span class="plain-syntax"> (</span><a href="4-sm.html#SP8" class="function-link"><span class="function-syntax">Str::len</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">) == </span><span class="constant-syntax">3</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_ZCODE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-sm.html#SP13" class="function-link"><span class="function-syntax">Str::get</span></a><span class="plain-syntax">(</span><a href="4-sm.html#SP11" class="function-link"><span class="function-syntax">Str::back</span></a><span class="plain-syntax">(</span><a href="4-sm.html#SP10" class="function-link"><span class="function-syntax">Str::end</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">))) == </span><span class="character-syntax">'x'</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">verdict</span><span class="plain-syntax"> = </span><span class="constant-syntax">FORMAT_PERHAPS_GLULX</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">NORMALISED</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">verdict</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP10"></a><b>&#167;10. Opening. </b>These files are wrappers for <span class="extract"><span class="extract-syntax">fopen</span></span>, the traditional C library call, but
referring to the file by filename structure rather than a textual name. Note
that we must transcode the filename to whatever the locale expects before
we call <span class="extract"><span class="extract-syntax">fopen</span></span>, which is the main reason for the wrapper.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">FILE</span><span class="plain-syntax"> *</span><span class="function-syntax">Filenames::fopen</span><button class="popup" onclick="togglePopup('usagePopup10')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup10">Usage of <span class="code-font"><span class="function-syntax">Filenames::fopen</span></span>:<br/>Streams - <a href="2-str.html#SP24">&#167;24</a>, <a href="2-str.html#SP25">&#167;25</a><br/>Text Files - <a href="4-tf.html#SP1">&#167;1</a>, <a href="4-tf.html#SP5_1">&#167;5.1</a><br/>Binary Files - <a href="6-bf.html#SP8">&#167;8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="reserved-syntax">char</span><span class="plain-syntax"> *</span><span class="identifier-syntax">usage</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">char</span><span class="plain-syntax"> </span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">[4*</span><span class="constant-syntax">MAX_FILENAME_LENGTH</span><span class="plain-syntax">];</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">, </span><span class="string-syntax">"%f"</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="4-sm.html#SP6" class="function-link"><span class="function-syntax">Str::copy_to_locale_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">, </span><span class="identifier-syntax">FN</span><span class="plain-syntax">, </span><span class="constant-syntax">4</span><span class="plain-syntax">*</span><span class="constant-syntax">MAX_FILENAME_LENGTH</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">fopen</span><span class="plain-syntax">(</span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">, </span><span class="identifier-syntax">usage</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">FILE</span><span class="plain-syntax"> *</span><span class="function-syntax">Filenames::fopen_caseless</span><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="reserved-syntax">char</span><span class="plain-syntax"> *</span><span class="identifier-syntax">usage</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">char</span><span class="plain-syntax"> </span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">[4*</span><span class="constant-syntax">MAX_FILENAME_LENGTH</span><span class="plain-syntax">];</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">, </span><span class="string-syntax">"%f"</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="4-sm.html#SP6" class="function-link"><span class="function-syntax">Str::copy_to_locale_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">, </span><span class="identifier-syntax">FN</span><span class="plain-syntax">, </span><span class="constant-syntax">4</span><span class="plain-syntax">*</span><span class="constant-syntax">MAX_FILENAME_LENGTH</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="3-cf.html#SP5" class="function-link"><span class="function-syntax">CIFilingSystem::fopen</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">, </span><span class="identifier-syntax">usage</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP11"></a><b>&#167;11. Comparing. </b>Not as easy as it seems. The following is a slow but effective way to
compare two filenames by seeing if they have the same canonical form
when printed out.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Filenames::eq</span><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F1</span><span class="plain-syntax">, </span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F2</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F1</span><span class="plain-syntax"> == </span><span class="identifier-syntax">F2</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">T1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">T2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">T1</span><span class="plain-syntax">, </span><span class="string-syntax">"%f"</span><span class="plain-syntax">, </span><span class="identifier-syntax">F1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">T2</span><span class="plain-syntax">, </span><span class="string-syntax">"%f"</span><span class="plain-syntax">, </span><span class="identifier-syntax">F2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">rv</span><span class="plain-syntax"> = </span><a href="4-sm.html#SP19" class="function-link"><span class="function-syntax">Str::eq</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">T1</span><span class="plain-syntax">, </span><span class="identifier-syntax">T2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">T1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">T2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">rv</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP12"></a><b>&#167;12. Timestamps and sizes. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="identifier-syntax">time_t</span><span class="plain-syntax"> </span><span class="function-syntax">Filenames::timestamp</span><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">char</span><span class="plain-syntax"> </span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">[4*</span><span class="constant-syntax">MAX_FILENAME_LENGTH</span><span class="plain-syntax">];</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">, </span><span class="string-syntax">"%f"</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="4-sm.html#SP6" class="function-link"><span class="function-syntax">Str::copy_to_locale_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">, </span><span class="identifier-syntax">FN</span><span class="plain-syntax">, </span><span class="constant-syntax">4</span><span class="plain-syntax">*</span><span class="constant-syntax">MAX_FILENAME_LENGTH</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">time_t</span><span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax"> = </span><a href="1-wp.html#SP12" class="function-link"><span class="function-syntax">Platform::timestamp</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Filenames::size</span><span class="plain-syntax">(</span><span class="reserved-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">char</span><span class="plain-syntax"> </span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">[4*</span><span class="constant-syntax">MAX_FILENAME_LENGTH</span><span class="plain-syntax">];</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">, </span><span class="string-syntax">"%f"</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="4-sm.html#SP6" class="function-link"><span class="function-syntax">Str::copy_to_locale_string</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">, </span><span class="identifier-syntax">FN</span><span class="plain-syntax">, </span><span class="constant-syntax">4</span><span class="plain-syntax">*</span><span class="constant-syntax">MAX_FILENAME_LENGTH</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><a href="1-wp.html#SP12" class="function-link"><span class="function-syntax">Platform::size</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">transcoded_pathname</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">FN</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
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