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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="index.html">inweb</a></li><li><a href="index.html#6">Chapter 6: Extras</a></li><li><b>Git Support</b></li></ul><p class="purpose">Constructing a suitable gitignore file for a simple inweb project.</p>
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<p class="inwebparagraph"><a id="SP1"></a><b>&#167;1. </b>This section offers just one function, which constructs a <code class="display"><span class="extract">.gitignore</span></code>
file by following a "prototype".
</p>
<pre class="display">
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<span class="reserved">typedef</span><span class="plain"> </span><span class="reserved">struct</span><span class="plain"> </span><span class="reserved">gitignore_state</span><span class="plain"> {</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">web</span><span class="plain"> *</span><span class="identifier">for_web</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">to_gitignore</span><span class="plain">;</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">last_line_was_blank</span><span class="plain">; </span><span class="comment"> used to suppress runs of multiple blank lines</span>
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<span class="plain">} </span><span class="reserved">gitignore_state</span><span class="plain">;</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Git::write_gitignore<button class="popup" onclick="togglePopup('usagePopup347')">...<span class="popuptext" id="usagePopup347">Usage of <b>Git::write_gitignore</b>:<br>Program Control - <a href="1-pc.html#SP7_1">&#167;7.1</a><br>The Analyser - <a href="3-ta.html#SP13">&#167;13</a></span></button></span><span class="plain">(</span><span class="reserved">web</span><span class="plain"> *</span><span class="identifier">W</span><span class="plain">, </span><span class="reserved">filename</span><span class="plain"> *</span><span class="identifier">prototype</span><span class="plain">, </span><span class="reserved">filename</span><span class="plain"> *</span><span class="identifier">F</span><span class="plain">) {</span>
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<span class="reserved">gitignore_state</span><span class="plain"> </span><span class="identifier">MS</span><span class="plain">;</span>
<span class="identifier">MS</span><span class="plain">.</span><span class="element">for_web</span><span class="plain"> = </span><span class="identifier">W</span><span class="plain">;</span>
<span class="identifier">MS</span><span class="plain">.</span><span class="element">last_line_was_blank</span><span class="plain"> = </span><span class="constant">TRUE</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">MS</span><span class="plain">.</span><span class="element">to_gitignore</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">STREAM_OPEN_TO_FILE</span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">, </span><span class="identifier">F</span><span class="plain">, </span><span class="constant">ISO_ENC</span><span class="plain">) == </span><span class="constant">FALSE</span><span class="plain">)</span>
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<span class="functiontext"><a href="../foundation-module/3-em.html#SP2">Errors::fatal_with_file</a></span><span class="plain">(</span><span class="string">"unable to write tangled file"</span><span class="plain">, </span><span class="identifier">F</span><span class="plain">);</span>
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<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"# This gitignore was automatically written by inweb -gitignore\n"</span><span class="plain">);</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"# and is not intended for human editing\n\n"</span><span class="plain">);</span>
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<span class="functiontext"><a href="../foundation-module/4-tf.html#SP5">TextFiles::read</a></span><span class="plain">(</span><span class="identifier">prototype</span><span class="plain">, </span><span class="constant">FALSE</span><span class="plain">, </span><span class="string">"can't open prototype file"</span><span class="plain">,</span>
<span class="constant">TRUE</span><span class="plain">, </span><span class="functiontext"><a href="6-gs.html#SP2">Git::copy_gitignore_line</a></span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, &amp;</span><span class="identifier">MS</span><span class="plain">);</span>
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<span class="identifier">STREAM_CLOSE</span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">);</span>
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<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="constant">STDOUT</span><span class="plain">, </span><span class="string">"Wrote gitignore file '%f' from script '%f'\n"</span><span class="plain">, </span><span class="identifier">F</span><span class="plain">, </span><span class="identifier">prototype</span><span class="plain">);</span>
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<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
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<p class="endnote">The structure gitignore_state is accessed in 3/ti, 6/mkf and here.</p>
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<p class="inwebparagraph"><a id="SP2"></a><b>&#167;2. </b></p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Git::copy_gitignore_line<button class="popup" onclick="togglePopup('usagePopup348')">...<span class="popuptext" id="usagePopup348">Usage of <b>Git::copy_gitignore_line</b>:<br><a href="6-gs.html#SP1">&#167;1</a>, <a href="6-gs.html#SP2_1">&#167;2.1</a></span></button></span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">line</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">X</span><span class="plain">) {</span>
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<span class="reserved">gitignore_state</span><span class="plain"> *</span><span class="identifier">MS</span><span class="plain"> = (</span><span class="reserved">gitignore_state</span><span class="plain"> *) </span><span class="identifier">X</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">MS</span><span class="plain">-&gt;</span><span class="element">to_gitignore</span><span class="plain">);</span>
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<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext"><a href="../foundation-module/4-pm.html#SP9">Regexp::create_mr</a></span><span class="plain">();</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="../foundation-module/4-pm.html#SP10">Regexp::match</a></span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">line</span><span class="plain">, </span><span class="identifier">L</span><span class="string">" *#%c*"</span><span class="plain">)) { </span><span class="functiontext"><a href="../foundation-module/4-pm.html#SP9">Regexp::dispose_of</a></span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="../foundation-module/4-pm.html#SP10">Regexp::match</a></span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">line</span><span class="plain">, </span><span class="identifier">L</span><span class="string">" *{basics} *"</span><span class="plain">)) </span>&lt;<span class="cwebmacro">Expand basics</span> <span class="cwebmacronumber">2.1</span>&gt;<span class="plain">;</span>
<span class="functiontext"><a href="../foundation-module/4-pm.html#SP9">Regexp::dispose_of</a></span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">);</span>
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&lt;<span class="cwebmacro">And otherwise copy the line straight through</span> <span class="cwebmacronumber">2.2</span>&gt;<span class="plain">;</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="inwebparagraph"><a id="SP2_1"></a><b>&#167;2.1. </b><code class="display">
&lt;<span class="cwebmacrodefn">Expand basics</span> <span class="cwebmacronumber">2.1</span>&gt; =
</code></p>
<pre class="displaydefn">
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<span class="reserved">filename</span><span class="plain"> *</span><span class="identifier">prototype</span><span class="plain"> =</span>
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<span class="functiontext"><a href="../foundation-module/3-fln.html#SP2">Filenames::in</a></span><span class="plain">(</span><span class="identifier">path_to_inweb_materials</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"gitignorescript.txt"</span><span class="plain">);</span>
<span class="functiontext"><a href="../foundation-module/4-tf.html#SP5">TextFiles::read</a></span><span class="plain">(</span><span class="identifier">prototype</span><span class="plain">, </span><span class="constant">FALSE</span><span class="plain">, </span><span class="string">"can't open make settings file"</span><span class="plain">,</span>
<span class="constant">TRUE</span><span class="plain">, </span><span class="functiontext"><a href="6-gs.html#SP2">Git::copy_gitignore_line</a></span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">MS</span><span class="plain">);</span>
<span class="functiontext"><a href="../foundation-module/4-pm.html#SP9">Regexp::dispose_of</a></span><span class="plain">(&amp;</span><span class="identifier">mr</span><span class="plain">);</span>
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<span class="reserved">return</span><span class="plain">;</span>
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</pre>
<p class="inwebparagraph"></p>
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<p class="endnote">This code is used in <a href="6-gs.html#SP2">&#167;2</a>.</p>
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<p class="inwebparagraph"><a id="SP2_2"></a><b>&#167;2.2. </b><code class="display">
&lt;<span class="cwebmacrodefn">And otherwise copy the line straight through</span> <span class="cwebmacronumber">2.2</span>&gt; =
</code></p>
<pre class="displaydefn">
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<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="../foundation-module/4-sm.html#SP8">Str::len</a></span><span class="plain">(</span><span class="identifier">line</span><span class="plain">) == </span><span class="constant">0</span><span class="plain">) {</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">MS</span><span class="plain">-&gt;</span><span class="element">last_line_was_blank</span><span class="plain"> == </span><span class="constant">FALSE</span><span class="plain">) </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"\n"</span><span class="plain">);</span>
<span class="identifier">MS</span><span class="plain">-&gt;</span><span class="element">last_line_was_blank</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="identifier">MS</span><span class="plain">-&gt;</span><span class="element">last_line_was_blank</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"%S\n"</span><span class="plain">, </span><span class="identifier">line</span><span class="plain">);</span>
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<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
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<p class="endnote">This code is used in <a href="6-gs.html#SP2">&#167;2</a>.</p>
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