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inform7/docs/inpolicy/2-vn.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>2/pc</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Language" content="en-gb">
<link href="inweb.css" rel="stylesheet" rev="stylesheet" type="text/css">
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<body>
<!--Weave of '2/vn' generated by 7-->
<ul class="crumbs"><li><a href="../webs.html">&#9733;</a></li><li><a href="index.html">inpolicy 1</a></li><li><a href="index.html#2">Chapter 2: Policies</a></li><li><b>Version Numbering</b></li></ul><p class="purpose">To update the build number(s) and versions for the intools.</p>
<ul class="toc"><li><a href="#SP1">&#167;1. The build-numbers file</a></li><li><a href="#SP5">&#167;5. Updating</a></li><li><a href="#SP7">&#167;7. Imposition</a></li><li><a href="#SP8">&#167;8. Daily build maintenance</a></li></ul><hr class="tocbar">
<p class="inwebparagraph"><a id="SP1"></a><b>&#167;1. The build-numbers file. </b>The scheme here is that each project can optionally contain a UTF-8 encoded
text file called <code class="display"><span class="extract">versions.txt</span></code>, which lists all of its version history;
a line of that file corresponds to a "version". Out of these versions, one
must be marked as the current version.
</p>
<pre class="display">
<span class="reserved">typedef</span><span class="plain"> </span><span class="reserved">struct</span><span class="plain"> </span><span class="reserved">project</span><span class="plain"> {</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">sync_line</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">project</span><span class="plain"> *</span><span class="identifier">sync_to</span><span class="plain">;</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">manual_updating</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">web</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">filename</span><span class="plain"> *</span><span class="identifier">contents_file</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">filename</span><span class="plain"> *</span><span class="identifier">versions_file</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">linked_list</span><span class="plain"> *</span><span class="identifier">versions</span><span class="plain">; </span> <span class="comment">of <code class="display"><span class="extract">version</span></code></span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">version</span><span class="plain"> *</span><span class="identifier">current_version</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">purpose</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">conts</span><span class="plain">;</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">next_is_version</span><span class="plain">;</span>
<span class="constant">MEMORY_MANAGEMENT</span>
<span class="plain">} </span><span class="reserved">project</span><span class="plain">;</span>
<span class="reserved">typedef</span><span class="plain"> </span><span class="reserved">struct</span><span class="plain"> </span><span class="reserved">version</span><span class="plain"> {</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">name</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">number</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">build_code</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">date</span><span class="plain">;</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">notes</span><span class="plain">;</span>
<span class="constant">MEMORY_MANAGEMENT</span>
<span class="plain">} </span><span class="reserved">version</span><span class="plain">;</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The structure project is accessed in 2/rw and here.</p>
<p class="endnote">The structure version is accessed in 2/pc, 2/rw and here.</p>
<p class="inwebparagraph"><a id="SP2"></a><b>&#167;2. </b>And here we take a filename or pathname, which might be to a web, with
or without a versions file; or to an extension; or to a website template;
or to the original Inform 6 source code. These all store their version
numbering differently, so we need code which is something of a Swiss army
knife.
</p>
<pre class="display">
<span class="reserved">project</span><span class="plain"> *</span><span class="functiontext">Inversion::read</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">web</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">silently</span><span class="plain">) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">;</span>
<span class="identifier">LOOP_OVER</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">project</span><span class="plain">) </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;web</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">P</span><span class="plain">;</span>
<span class="identifier">P</span><span class="plain"> = </span><span class="identifier">CREATE</span><span class="plain">(</span><span class="reserved">project</span><span class="plain">);</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;sync_line</span><span class="plain"> = </span><span class="functiontext">Str::new</span><span class="plain">();</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;sync_to</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;manual_updating</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;web</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">);</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions</span><span class="plain"> = </span><span class="identifier">NEW_LINKED_LIST</span><span class="plain">(</span><span class="reserved">version</span><span class="plain">);</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;conts</span><span class="plain"> = </span><span class="functiontext">Str::new</span><span class="plain">();</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;purpose</span><span class="plain"> = </span><span class="functiontext">Str::new</span><span class="plain">();</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;next_is_version</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::ends_with_wide_string</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">, </span><span class="identifier">L</span><span class="string">".i7x"</span><span class="plain">)) {</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions_file</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;contents_file</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
&lt;<span class="cwebmacro">Read in the extension file</span> <span class="cwebmacronumber">2.2</span>&gt;<span class="plain">;</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions_file</span><span class="plain"> = </span><span class="functiontext">Filenames::in_folder</span><span class="plain">(</span><span class="functiontext">Pathnames::from_text</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">), </span><span class="identifier">I</span><span class="string">"versions.txt"</span><span class="plain">);</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;contents_file</span><span class="plain"> = </span><span class="functiontext">Filenames::in_folder</span><span class="plain">(</span><span class="functiontext">Pathnames::from_text</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">), </span><span class="identifier">I</span><span class="string">"Contents.w"</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">TextFiles::exists</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;contents_file</span><span class="plain">)) {</span>
&lt;<span class="cwebmacro">Read in the contents file</span> <span class="cwebmacronumber">2.3</span>&gt;<span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">TextFiles::exists</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions_file</span><span class="plain">) == </span><span class="constant">FALSE</span><span class="plain">)</span>
&lt;<span class="cwebmacro">Read version from the contents file</span> <span class="cwebmacronumber">2.4</span>&gt;<span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">TextFiles::exists</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions_file</span><span class="plain">)) </span>&lt;<span class="cwebmacro">Read in the versions file</span> <span class="cwebmacronumber">2.5</span>&gt;<span class="plain">;</span>
<span class="reserved">filename</span><span class="plain"> *</span><span class="identifier">I6_vn</span><span class="plain"> = </span><span class="functiontext">Filenames::in_folder</span><span class="plain">(</span>
<span class="functiontext">Pathnames::subfolder</span><span class="plain">(</span><span class="functiontext">Pathnames::from_text</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">), </span><span class="identifier">I</span><span class="string">"inform6"</span><span class="plain">), </span><span class="identifier">I</span><span class="string">"header.h"</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">TextFiles::exists</span><span class="plain">(</span><span class="identifier">I6_vn</span><span class="plain">)) </span>&lt;<span class="cwebmacro">Read in I6 source header file</span> <span class="cwebmacronumber">2.6</span>&gt;<span class="plain">;</span>
<span class="reserved">filename</span><span class="plain"> *</span><span class="identifier">template_vn</span><span class="plain"> = </span><span class="functiontext">Filenames::in_folder</span><span class="plain">(</span><span class="functiontext">Pathnames::from_text</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">), </span><span class="identifier">I</span><span class="string">"(manifest).txt"</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">TextFiles::exists</span><span class="plain">(</span><span class="identifier">template_vn</span><span class="plain">)) </span>&lt;<span class="cwebmacro">Read in template manifest file</span> <span class="cwebmacronumber">2.7</span>&gt;<span class="plain">;</span>
<span class="reserved">filename</span><span class="plain"> *</span><span class="identifier">rmt_vn</span><span class="plain"> = </span><span class="functiontext">Filenames::in_folder</span><span class="plain">(</span><span class="functiontext">Pathnames::from_text</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">), </span><span class="identifier">I</span><span class="string">"README.txt"</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">TextFiles::exists</span><span class="plain">(</span><span class="identifier">rmt_vn</span><span class="plain">)) </span>&lt;<span class="cwebmacro">Read in README file</span> <span class="cwebmacronumber">2.8</span>&gt;<span class="plain">;</span>
<span class="identifier">rmt_vn</span><span class="plain"> = </span><span class="functiontext">Filenames::in_folder</span><span class="plain">(</span><span class="functiontext">Pathnames::from_text</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">), </span><span class="identifier">I</span><span class="string">"README.md"</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">TextFiles::exists</span><span class="plain">(</span><span class="identifier">rmt_vn</span><span class="plain">)) </span>&lt;<span class="cwebmacro">Read in README file</span> <span class="cwebmacronumber">2.8</span>&gt;<span class="plain">;</span>
<span class="plain">}</span>
&lt;<span class="cwebmacro">Print the current version number</span> <span class="cwebmacronumber">2.1</span>&gt;<span class="plain">;</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">P</span><span class="plain">;</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::read is used in <a href="#SP3_2">&#167;3.2</a>, <a href="#SP8">&#167;8</a>, 2/rw (<a href="2-rw.html#SP4">&#167;4</a>).</p>
<p class="inwebparagraph"><a id="SP2_1"></a><b>&#167;2.1. </b><code class="display">
&lt;<span class="cwebmacrodefn">Print the current version number</span> <span class="cwebmacronumber">2.1</span>&gt; =
</code></p>
<pre class="displaydefn">
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">) &amp;&amp; (!</span><span class="identifier">silently</span><span class="plain">))</span>
<span class="identifier">PRINT</span><span class="plain">(</span><span class="string">"%S: %S %S (build %S)\</span><span class="plain">n</span><span class="string">"</span><span class="plain">, </span><span class="identifier">web</span><span class="plain">,</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;name</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;number</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain">);</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">This code is used in <a href="#SP2">&#167;2</a>.</p>
<p class="inwebparagraph"><a id="SP2_2"></a><b>&#167;2.2. </b><code class="display">
&lt;<span class="cwebmacrodefn">Read in the extension file</span> <span class="cwebmacronumber">2.2</span>&gt; =
</code></p>
<pre class="displaydefn">
<span class="functiontext">TextFiles::read</span><span class="plain">(</span><span class="functiontext">Filenames::from_text</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">), </span><span class="constant">FALSE</span><span class="plain">, </span><span class="string">"unable to read extension"</span><span class="plain">, </span><span class="constant">TRUE</span><span class="plain">,</span>
<span class="plain">&amp;</span><span class="functiontext">Inversion::extension_harvester</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">This code is used in <a href="#SP2">&#167;2</a>.</p>
<p class="inwebparagraph"><a id="SP2_3"></a><b>&#167;2.3. </b><code class="display">
&lt;<span class="cwebmacrodefn">Read in the contents file</span> <span class="cwebmacronumber">2.3</span>&gt; =
</code></p>
<pre class="displaydefn">
<span class="functiontext">TextFiles::read</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;contents_file</span><span class="plain">, </span><span class="constant">FALSE</span><span class="plain">, </span><span class="string">"unable to read contents section"</span><span class="plain">, </span><span class="constant">TRUE</span><span class="plain">,</span>
<span class="plain">&amp;</span><span class="functiontext">Inversion::contents_harvester</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">This code is used in <a href="#SP2">&#167;2</a>.</p>
<p class="inwebparagraph"><a id="SP2_4"></a><b>&#167;2.4. </b><code class="display">
&lt;<span class="cwebmacrodefn">Read version from the contents file</span> <span class="cwebmacronumber">2.4</span>&gt; =
</code></p>
<pre class="displaydefn">
<span class="functiontext">TextFiles::read</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;contents_file</span><span class="plain">, </span><span class="constant">FALSE</span><span class="plain">, </span><span class="string">"unable to read contents section"</span><span class="plain">, </span><span class="constant">TRUE</span><span class="plain">,</span>
<span class="plain">&amp;</span><span class="functiontext">Inversion::contents_version_harvester</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">This code is used in <a href="#SP2">&#167;2</a>.</p>
<p class="inwebparagraph"><a id="SP2_5"></a><b>&#167;2.5. </b><code class="display">
&lt;<span class="cwebmacrodefn">Read in the versions file</span> <span class="cwebmacronumber">2.5</span>&gt; =
</code></p>
<pre class="displaydefn">
<span class="functiontext">TextFiles::read</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions_file</span><span class="plain">, </span><span class="constant">FALSE</span><span class="plain">, </span><span class="string">"unable to read roster of version numbers"</span><span class="plain">, </span><span class="constant">TRUE</span><span class="plain">,</span>
<span class="plain">&amp;</span><span class="functiontext">Inversion::version_harvester</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">This code is used in <a href="#SP2">&#167;2</a>.</p>
<p class="inwebparagraph"><a id="SP2_6"></a><b>&#167;2.6. </b><code class="display">
&lt;<span class="cwebmacrodefn">Read in I6 source header file</span> <span class="cwebmacronumber">2.6</span>&gt; =
</code></p>
<pre class="displaydefn">
<span class="functiontext">TextFiles::read</span><span class="plain">(</span><span class="identifier">I6_vn</span><span class="plain">, </span><span class="constant">FALSE</span><span class="plain">, </span><span class="string">"unable to read header file from I6 source"</span><span class="plain">, </span><span class="constant">TRUE</span><span class="plain">,</span>
<span class="plain">&amp;</span><span class="functiontext">Inversion::header_harvester</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">This code is used in <a href="#SP2">&#167;2</a>.</p>
<p class="inwebparagraph"><a id="SP2_7"></a><b>&#167;2.7. </b><code class="display">
&lt;<span class="cwebmacrodefn">Read in template manifest file</span> <span class="cwebmacronumber">2.7</span>&gt; =
</code></p>
<pre class="displaydefn">
<span class="functiontext">TextFiles::read</span><span class="plain">(</span><span class="identifier">template_vn</span><span class="plain">, </span><span class="constant">FALSE</span><span class="plain">, </span><span class="string">"unable to read manifest file from website template"</span><span class="plain">, </span><span class="constant">TRUE</span><span class="plain">,</span>
<span class="plain">&amp;</span><span class="functiontext">Inversion::template_harvester</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">This code is used in <a href="#SP2">&#167;2</a>.</p>
<p class="inwebparagraph"><a id="SP2_8"></a><b>&#167;2.8. </b><code class="display">
&lt;<span class="cwebmacrodefn">Read in README file</span> <span class="cwebmacronumber">2.8</span>&gt; =
</code></p>
<pre class="displaydefn">
<span class="functiontext">TextFiles::read</span><span class="plain">(</span><span class="identifier">rmt_vn</span><span class="plain">, </span><span class="constant">FALSE</span><span class="plain">, </span><span class="string">"unable to read manifest file from website template"</span><span class="plain">, </span><span class="constant">TRUE</span><span class="plain">,</span>
<span class="plain">&amp;</span><span class="functiontext">Inversion::readme_harvester</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">This code is used in <a href="#SP2">&#167;2</a> (twice).</p>
<p class="inwebparagraph"><a id="SP3"></a><b>&#167;3. </b>The format for the contents section of a web is documented in Inweb.
</p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::extension_harvester</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">text</span><span class="plain">, </span><span class="reserved">text_file_position</span><span class="plain"> *</span><span class="identifier">tfp</span><span class="plain">, </span><span class="reserved">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = (</span><span class="reserved">project</span><span class="plain"> *) </span><span class="identifier">state</span><span class="plain">;</span>
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">text</span><span class="plain">) == 0) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">" *Version (%c*?) of %c*begins here. *"</span><span class="plain">)) {</span>
&lt;<span class="cwebmacro">Ensure a current version exists</span> <span class="cwebmacronumber">3.6</span>&gt;<span class="plain">;</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;number</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
<span class="plain">}</span>
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::extension_harvester is used in <a href="#SP2_2">&#167;2.2</a>.</p>
<p class="inwebparagraph"><a id="SP3_1"></a><b>&#167;3.1. </b>The format for the contents section of a web is documented in Inweb.
</p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::contents_harvester</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">text</span><span class="plain">, </span><span class="reserved">text_file_position</span><span class="plain"> *</span><span class="identifier">tfp</span><span class="plain">, </span><span class="reserved">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = (</span><span class="reserved">project</span><span class="plain"> *) </span><span class="identifier">state</span><span class="plain">;</span>
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">text</span><span class="plain">) == 0) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">" *Purpose: *(%c*?) *"</span><span class="plain">)) {</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;purpose</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
<span class="plain">}</span>
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::contents_version_harvester</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">text</span><span class="plain">, </span><span class="reserved">text_file_position</span><span class="plain"> *</span><span class="identifier">tfp</span><span class="plain">, </span><span class="reserved">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = (</span><span class="reserved">project</span><span class="plain"> *) </span><span class="identifier">state</span><span class="plain">;</span>
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">text</span><span class="plain">) == 0) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">" *Version Number: *(%c*?) *"</span><span class="plain">)) {</span>
&lt;<span class="cwebmacro">Ensure a current version exists</span> <span class="cwebmacronumber">3.6</span>&gt;<span class="plain">;</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;number</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
<span class="plain">}</span>
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::contents_harvester is used in <a href="#SP2_3">&#167;2.3</a>.</p>
<p class="endnote">The function Inversion::contents_version_harvester is used in <a href="#SP2_4">&#167;2.4</a>.</p>
<p class="inwebparagraph"><a id="SP3_2"></a><b>&#167;3.2. </b>A version file contains lines which can either be a special command, or
give details of a version. The commands are <code class="display"><span class="extract">Automatic</span></code> or <code class="display"><span class="extract">Manual</span></code> (the
latter is the default), or <code class="display"><span class="extract">Sync to W</span></code>, where <code class="display"><span class="extract">W</span></code> is another project.
(All of this is infrastructure left over from when the Inform tools were
syncing version numbers to the main Inform 7 version number: with the
transition to Github, this scheme was dropped.)
</p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::version_harvester</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">text</span><span class="plain">, </span><span class="reserved">text_file_position</span><span class="plain"> *</span><span class="identifier">tfp</span><span class="plain">, </span><span class="reserved">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = (</span><span class="reserved">project</span><span class="plain"> *) </span><span class="identifier">state</span><span class="plain">;</span>
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">text</span><span class="plain">) == 0) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Automatic"</span><span class="plain">)) {</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;manual_updating</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Manual"</span><span class="plain">)) {</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;manual_updating</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Sync to (%c*)"</span><span class="plain">)) {</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;sync_to</span><span class="plain"> = </span><span class="functiontext">Inversion::read</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0], </span><span class="constant">TRUE</span><span class="plain">);</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;manual_updating</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%c*?)\</span><span class="plain">t</span><span class="string">+(%c*?)\</span><span class="plain">t</span><span class="string">+(%c*?)\</span><span class="plain">t</span><span class="string">+(%c*?)\</span><span class="plain">t</span><span class="string">+(%c*)"</span><span class="plain">)) {</span>
<span class="reserved">version</span><span class="plain"> *</span><span class="identifier">V</span><span class="plain"> = </span><span class="identifier">CREATE</span><span class="plain">(</span><span class="reserved">version</span><span class="plain">);</span>
<span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;name</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
<span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;number</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
<span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[2]);</span>
<span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[3]);</span>
<span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;notes</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[4]);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::get_first_char</span><span class="plain">(</span><span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain">) == </span><span class="character">'*'</span><span class="plain">) {</span>
<span class="functiontext">Str::delete_first_character</span><span class="plain">(</span><span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain">);</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain"> = </span><span class="identifier">V</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="identifier">ADD_TO_LINKED_LIST</span><span class="plain">(</span><span class="identifier">V</span><span class="plain">, </span><span class="reserved">version</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions</span><span class="plain">);</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
<span class="functiontext">Errors::in_text_file</span><span class="plain">(</span><span class="string">"can't parse version line"</span><span class="plain">, </span><span class="identifier">tfp</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::version_harvester is used in <a href="#SP2_5">&#167;2.5</a>.</p>
<p class="inwebparagraph"><a id="SP3_3"></a><b>&#167;3.3. </b>Explicit code to read from <code class="display"><span class="extract">header.h</span></code> in the Inform 6 repository.
</p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::header_harvester</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">text</span><span class="plain">, </span><span class="reserved">text_file_position</span><span class="plain"> *</span><span class="identifier">tfp</span><span class="plain">, </span><span class="reserved">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = (</span><span class="reserved">project</span><span class="plain"> *) </span><span class="identifier">state</span><span class="plain">;</span>
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">text</span><span class="plain">) == 0) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"#define RELEASE_NUMBER (%c*?) *"</span><span class="plain">)) {</span>
&lt;<span class="cwebmacro">Ensure a current version exists</span> <span class="cwebmacronumber">3.6</span>&gt;<span class="plain">;</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;number</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
<span class="plain">}</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"#define RELEASE_DATE \</span><span class="plain">"</span><span class="string">(%c*?)\</span><span class="plain">"</span><span class="string"> *"</span><span class="plain">)) {</span>
&lt;<span class="cwebmacro">Ensure a current version exists</span> <span class="cwebmacronumber">3.6</span>&gt;<span class="plain">;</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;name</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
<span class="plain">}</span>
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::header_harvester is used in <a href="#SP2_6">&#167;2.6</a>.</p>
<p class="inwebparagraph"><a id="SP3_4"></a><b>&#167;3.4. </b>Explicit code to read from the manifest file of a website template.
</p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::template_harvester</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">text</span><span class="plain">, </span><span class="reserved">text_file_position</span><span class="plain"> *</span><span class="identifier">tfp</span><span class="plain">, </span><span class="reserved">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = (</span><span class="reserved">project</span><span class="plain"> *) </span><span class="identifier">state</span><span class="plain">;</span>
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">text</span><span class="plain">) == 0) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"%[INTERPRETERVERSION%]"</span><span class="plain">)) {</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;next_is_version</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;next_is_version</span><span class="plain">) {</span>
&lt;<span class="cwebmacro">Ensure a current version exists</span> <span class="cwebmacronumber">3.6</span>&gt;<span class="plain">;</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;name</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">text</span><span class="plain">);</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;next_is_version</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::template_harvester is used in <a href="#SP2_7">&#167;2.7</a>.</p>
<p class="inwebparagraph"><a id="SP3_5"></a><b>&#167;3.5. </b>And this is needed for cheapglk and glulxe.
</p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::readme_harvester</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">text</span><span class="plain">, </span><span class="reserved">text_file_position</span><span class="plain"> *</span><span class="identifier">tfp</span><span class="plain">, </span><span class="reserved">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = (</span><span class="reserved">project</span><span class="plain"> *) </span><span class="identifier">state</span><span class="plain">;</span>
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">text</span><span class="plain">) == 0) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"CheapGlk Library: version (%c*?) *"</span><span class="plain">)) ||</span>
<span class="plain">(</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"- Version (%c*?) *"</span><span class="plain">))) {</span>
&lt;<span class="cwebmacro">Ensure a current version exists</span> <span class="cwebmacronumber">3.6</span>&gt;<span class="plain">;</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;number</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
<span class="plain">}</span>
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::readme_harvester is used in <a href="#SP2_8">&#167;2.8</a>.</p>
<p class="inwebparagraph"><a id="SP3_6"></a><b>&#167;3.6. </b>And many of the above use this, which assumes there will be just one single
version number known for a program.
</p>
<p class="macrodefinition"><code class="display">
&lt;<span class="cwebmacrodefn">Ensure a current version exists</span> <span class="cwebmacronumber">3.6</span>&gt; =
</code></p>
<pre class="displaydefn">
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) {</span>
<span class="reserved">version</span><span class="plain"> *</span><span class="identifier">V</span><span class="plain"> = </span><span class="identifier">CREATE</span><span class="plain">(</span><span class="reserved">version</span><span class="plain">);</span>
<span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;name</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;number</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain"> = </span><span class="identifier">I</span><span class="string">"9Z99"</span><span class="plain">;</span>
<span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;notes</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="identifier">ADD_TO_LINKED_LIST</span><span class="plain">(</span><span class="identifier">V</span><span class="plain">, </span><span class="reserved">version</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions</span><span class="plain">);</span>
<span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain"> = </span><span class="identifier">V</span><span class="plain">;</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">This code is used in <a href="#SP3">&#167;3</a>, <a href="#SP3_1">&#167;3.1</a>, <a href="#SP3_3">&#167;3.3</a> (twice), <a href="#SP3_4">&#167;3.4</a>, <a href="#SP3_5">&#167;3.5</a>.</p>
<p class="inwebparagraph"><a id="SP4"></a><b>&#167;4. </b>The following then writes back the versions file, following a version
increment:
</p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::write</span><span class="plain">(</span><span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">) {</span>
<span class="reserved">text_stream</span><span class="plain"> </span><span class="identifier">vr_stream</span><span class="plain">;</span>
<span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">OUT</span><span class="plain"> = &amp;</span><span class="identifier">vr_stream</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Streams::open_to_file</span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions_file</span><span class="plain">, </span><span class="constant">UTF8_ENC</span><span class="plain">) == </span><span class="constant">FALSE</span><span class="plain">)</span>
<span class="functiontext">Errors::fatal_with_file</span><span class="plain">(</span><span class="string">"can't write versions file"</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions_file</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;sync_to</span><span class="plain">) </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"Sync to %S\</span><span class="plain">n</span><span class="string">"</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;sync_to</span><span class="plain">-</span><span class="element">&gt;web</span><span class="plain">);</span>
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;manual_updating</span><span class="plain">) </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"Manual\</span><span class="plain">n</span><span class="string">"</span><span class="plain">);</span>
<span class="reserved">else</span><span class="plain"> </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"Automatic\</span><span class="plain">n</span><span class="string">"</span><span class="plain">);</span>
<span class="reserved">version</span><span class="plain"> *</span><span class="identifier">V</span><span class="plain">;</span>
<span class="identifier">LOOP_OVER_LINKED_LIST</span><span class="plain">(</span><span class="identifier">V</span><span class="plain">, </span><span class="reserved">version</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;versions</span><span class="plain">) {</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"%S\</span><span class="plain">t</span><span class="string">%S\</span><span class="plain">t</span><span class="string">"</span><span class="plain">, </span><span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;name</span><span class="plain">, </span><span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;number</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">V</span><span class="plain"> == </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">) </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"*"</span><span class="plain">);</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"%S\</span><span class="plain">t</span><span class="string">%S\</span><span class="plain">t</span><span class="string">%S\</span><span class="plain">n</span><span class="string">"</span><span class="plain">, </span><span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain">, </span><span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain">, </span><span class="identifier">V</span><span class="plain">-</span><span class="element">&gt;notes</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="functiontext">Streams::close</span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::write is used in <a href="#SP8">&#167;8</a>.</p>
<p class="inwebparagraph"><a id="SP5"></a><b>&#167;5. Updating. </b>The standard date format we use is "26 February 2018".
</p>
<pre class="display">
<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">Inversion::dated_today</span><span class="plain">(</span><span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">dateline</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="constant">FALSE</span><span class="plain">;</span>
<span class="reserved">char</span><span class="plain"> *</span><span class="identifier">monthname</span><span class="plain">[12] = { </span><span class="string">"January"</span><span class="plain">, </span><span class="string">"February"</span><span class="plain">, </span><span class="string">"March"</span><span class="plain">, </span><span class="string">"April"</span><span class="plain">, </span><span class="string">"May"</span><span class="plain">, </span><span class="string">"June"</span><span class="plain">,</span>
<span class="string">"July"</span><span class="plain">, </span><span class="string">"August"</span><span class="plain">, </span><span class="string">"September"</span><span class="plain">, </span><span class="string">"October"</span><span class="plain">, </span><span class="string">"November"</span><span class="plain">, </span><span class="string">"December"</span><span class="plain"> };</span>
<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">dateline</span><span class="plain">, </span><span class="string">"%d %s %d"</span><span class="plain">,</span>
<span class="identifier">the_present</span><span class="plain">-&gt;</span><span class="identifier">tm_mday</span><span class="plain">, </span><span class="identifier">monthname</span><span class="plain">[</span><span class="identifier">the_present</span><span class="plain">-&gt;</span><span class="identifier">tm_mon</span><span class="plain">], </span><span class="identifier">the_present</span><span class="plain">-&gt;</span><span class="identifier">tm_year</span><span class="plain">+1900);</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">rv</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq</span><span class="plain">(</span><span class="identifier">dateline</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain">)) </span><span class="identifier">rv</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">rv</span><span class="plain">;</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::dated_today is used in <a href="#SP9">&#167;9</a>.</p>
<p class="inwebparagraph"><a id="SP6"></a><b>&#167;6. </b>Here we read the Inform four-character code, e.g., <code class="display"><span class="extract">3Q27</span></code>, and increase it
by one. The two-digit code at the back is incremented, but rolls around from
<code class="display"><span class="extract">99</span></code> to <code class="display"><span class="extract">01</span></code>, in which case the letter is advanced, except that <code class="display"><span class="extract">I</span></code> and <code class="display"><span class="extract">O</span></code>
are skipped, and if the letter passes <code class="display"><span class="extract">Z</span></code> then it rolls back around to <code class="display"><span class="extract">A</span></code>
and the initial digit is incremented.
</p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::increment</span><span class="plain">(</span><span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">T</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">) != 4) </span><span class="functiontext">Errors::with_text</span><span class="plain">(</span><span class="string">"version number malformed: %S"</span><span class="plain">, </span><span class="identifier">T</span><span class="plain">);</span>
<span class="reserved">else</span><span class="plain"> {</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">N</span><span class="plain"> = </span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, 0) - </span><span class="character">'0'</span><span class="plain">;</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">L</span><span class="plain"> = </span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, 1);</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">M1</span><span class="plain"> = </span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, 2) - </span><span class="character">'0'</span><span class="plain">;</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">M2</span><span class="plain"> = </span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, 3) - </span><span class="character">'0'</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">N</span><span class="plain"> &lt; 0) || (</span><span class="identifier">N</span><span class="plain"> &gt; 9) || (</span><span class="identifier">L</span><span class="plain"> &lt; </span><span class="character">'A'</span><span class="plain">) || (</span><span class="identifier">L</span><span class="plain"> &gt; </span><span class="character">'Z'</span><span class="plain">) ||</span>
<span class="plain">(</span><span class="identifier">M1</span><span class="plain"> &lt; 0) || (</span><span class="identifier">M1</span><span class="plain"> &gt; 9) || (</span><span class="identifier">M2</span><span class="plain"> &lt; 0) || (</span><span class="identifier">M2</span><span class="plain"> &gt; 9)) {</span>
<span class="functiontext">Errors::with_text</span><span class="plain">(</span><span class="string">"version number malformed: %S"</span><span class="plain">, </span><span class="identifier">T</span><span class="plain">);</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
<span class="identifier">M2</span><span class="plain">++;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">M2</span><span class="plain"> == 10) { </span><span class="identifier">M2</span><span class="plain"> = 0; </span><span class="identifier">M1</span><span class="plain">++; }</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">M1</span><span class="plain"> == 10) { </span><span class="identifier">M1</span><span class="plain"> = 0; </span><span class="identifier">M2</span><span class="plain"> = 1; </span><span class="identifier">L</span><span class="plain">++; }</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">L</span><span class="plain"> == </span><span class="character">'I'</span><span class="plain">) || (</span><span class="identifier">L</span><span class="plain"> == </span><span class="character">'O'</span><span class="plain">)) </span><span class="identifier">L</span><span class="plain">++;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">L</span><span class="plain"> &gt; </span><span class="character">'Z'</span><span class="plain">) { </span><span class="identifier">L</span><span class="plain"> = </span><span class="character">'A'</span><span class="plain">; </span><span class="identifier">N</span><span class="plain">++; }</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">N</span><span class="plain"> == 10) </span><span class="functiontext">Errors::with_text</span><span class="plain">(</span><span class="string">"version number overflowed: %S"</span><span class="plain">, </span><span class="identifier">T</span><span class="plain">);</span>
<span class="reserved">else</span><span class="plain"> {</span>
<span class="functiontext">Str::clear</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">);</span>
<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="string">"%d%c%d%d"</span><span class="plain">, </span><span class="identifier">N</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="identifier">M1</span><span class="plain">, </span><span class="identifier">M2</span><span class="plain">);</span>
<span class="identifier">PRINT</span><span class="plain">(</span><span class="string">"Build advanced to %S\</span><span class="plain">n</span><span class="string">"</span><span class="plain">, </span><span class="identifier">T</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="plain">}</span>
<span class="plain">}</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::increment is used in <a href="#SP9">&#167;9</a>.</p>
<p class="inwebparagraph"><a id="SP7"></a><b>&#167;7. Imposition. </b>When we impose a new version number on a web that has a contents page, we
update the metadata in that contents page.
</p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::impose</span><span class="plain">(</span><span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">) {</span>
<span class="functiontext">TextFiles::read</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;contents_file</span><span class="plain">, </span><span class="constant">FALSE</span><span class="plain">, </span><span class="string">"unable to read web contents"</span><span class="plain">, </span><span class="constant">TRUE</span><span class="plain">,</span>
<span class="plain">&amp;</span><span class="functiontext">Inversion::impose_helper</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
<span class="reserved">text_stream</span><span class="plain"> </span><span class="identifier">vr_stream</span><span class="plain">;</span>
<span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">OUT</span><span class="plain"> = &amp;</span><span class="identifier">vr_stream</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Streams::open_to_file</span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;contents_file</span><span class="plain">, </span><span class="constant">UTF8_ENC</span><span class="plain">) == </span><span class="constant">FALSE</span><span class="plain">)</span>
<span class="functiontext">Errors::fatal_with_file</span><span class="plain">(</span><span class="string">"unable to write web contents"</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;contents_file</span><span class="plain">);</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"%S"</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;conts</span><span class="plain">);</span>
<span class="functiontext">Streams::close</span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::impose_helper</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">text</span><span class="plain">, </span><span class="reserved">text_file_position</span><span class="plain"> *</span><span class="identifier">tfp</span><span class="plain">, </span><span class="reserved">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = (</span><span class="reserved">project</span><span class="plain"> *) </span><span class="identifier">state</span><span class="plain">;</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">SP</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;sync_to</span><span class="plain">) </span><span class="identifier">SP</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;sync_to</span><span class="plain">;</span>
<span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">OUT</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;conts</span><span class="plain">;</span>
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">) &amp;&amp; (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Build Date:%c*"</span><span class="plain">))) {</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"Build Date: %S\</span><span class="plain">n</span><span class="string">"</span><span class="plain">, </span><span class="identifier">SP</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain">);</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">) &amp;&amp; (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Build Number:%c*"</span><span class="plain">))) {</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"Build Number: %S\</span><span class="plain">n</span><span class="string">"</span><span class="plain">, </span><span class="identifier">SP</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain">);</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">) &amp;&amp; (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Version Number:%c*"</span><span class="plain">))) {</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"Version Number: %S\</span><span class="plain">n</span><span class="string">"</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;number</span><span class="plain">);</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">) &amp;&amp; (</span><span class="functiontext">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Version Name:%c*"</span><span class="plain">))) {</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"Version Name: %S\</span><span class="plain">n</span><span class="string">"</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;name</span><span class="plain">);</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"%S\</span><span class="plain">n</span><span class="string">"</span><span class="plain">, </span><span class="identifier">text</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::impose is used in <a href="#SP8">&#167;8</a>.</p>
<p class="endnote">The function Inversion::impose_helper appears nowhere else.</p>
<p class="inwebparagraph"><a id="SP8"></a><b>&#167;8. Daily build maintenance. </b></p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inversion::maintain</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">web</span><span class="plain">) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = </span><span class="functiontext">Inversion::read</span><span class="plain">(</span><span class="identifier">web</span><span class="plain">, </span><span class="constant">FALSE</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Inversion::needs_update</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">)) {</span>
<span class="functiontext">Inversion::write</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">);</span>
<span class="functiontext">Inversion::impose</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::maintain is used in 1/mn (<a href="1-mn.html#SP2">&#167;2</a>).</p>
<p class="inwebparagraph"><a id="SP9"></a><b>&#167;9. </b></p>
<pre class="display">
<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">Inversion::needs_update</span><span class="plain">(</span><span class="reserved">project</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">) {</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">rv</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;manual_updating</span><span class="plain"> == </span><span class="constant">FALSE</span><span class="plain">) &amp;&amp; (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">)) {</span>
<span class="reserved">project</span><span class="plain"> *</span><span class="identifier">SP</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;sync_to</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">SP</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">SP</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::ne</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain">, </span><span class="identifier">SP</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain">)) {</span>
<span class="identifier">rv</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">; </span><span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain">, </span><span class="identifier">SP</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::ne</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain">, </span><span class="identifier">SP</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain">)) {</span>
<span class="identifier">rv</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">; </span><span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain">, </span><span class="identifier">SP</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;build_code</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="plain">}</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">dateline</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Inversion::dated_today</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">dateline</span><span class="plain">) == </span><span class="constant">FALSE</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;sync_to</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="functiontext">Inversion::increment</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">);</span>
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;current_version</span><span class="plain">-</span><span class="element">&gt;date</span><span class="plain">, </span><span class="identifier">dateline</span><span class="plain">);</span>
<span class="identifier">rv</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">dateline</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="plain">}</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">rv</span><span class="plain">;</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inversion::needs_update is used in <a href="#SP8">&#167;8</a>.</p>
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