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<th class=docs><h1>diff.c</h1></th>
<th class=code></th>
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<tr id='section-1'>
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<td class=code>
<div class='highlight'><pre><span></span><span class="cm">/*</span>
<span class="cm"> * libgit2 "diff" example - shows how to use the diff API</span>
<span class="cm"> *</span>
<span class="cm"> * Written by the libgit2 contributors</span>
<span class="cm"> *</span>
<span class="cm"> * To the extent possible under law, the author(s) have dedicated all copyright</span>
<span class="cm"> * and related and neighboring rights to this software to the public domain</span>
<span class="cm"> * worldwide. This software is distributed without any warranty.</span>
<span class="cm"> *</span>
<span class="cm"> * You should have received a copy of the CC0 Public Domain Dedication along</span>
<span class="cm"> * with this software. If not, see</span>
<span class="cm"> * <http://creativecommons.org/publicdomain/zero/1.0/>.</span>
<span class="cm"> */</span>
<span class="cp">#include</span> <span class="cpf">"common.h"</span><span class="cp"></span></pre></div>
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<p>This example demonstrates the use of the libgit2 diff APIs to
create <code>git_diff</code> objects and display them, emulating a number of
core Git <code>diff</code> command line options.</p>
<p>This covers on a portion of the core Git diff options and doesn't
have particularly good error handling, but it should show most of
the core libgit2 diff APIs, including various types of diffs and
how to do renaming detection and patch formatting.</p>
</td>
<td class=code>
<div class='highlight'><pre><span class="k">static</span> <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">colors</span><span class="p">[]</span> <span class="o">=</span> <span class="p">{</span>
<span class="s">"</span><span class="se">\033</span><span class="s">[m"</span><span class="p">,</span> <span class="cm">/* reset */</span>
<span class="s">"</span><span class="se">\033</span><span class="s">[1m"</span><span class="p">,</span> <span class="cm">/* bold */</span>
<span class="s">"</span><span class="se">\033</span><span class="s">[31m"</span><span class="p">,</span> <span class="cm">/* red */</span>
<span class="s">"</span><span class="se">\033</span><span class="s">[32m"</span><span class="p">,</span> <span class="cm">/* green */</span>
<span class="s">"</span><span class="se">\033</span><span class="s">[36m"</span> <span class="cm">/* cyan */</span>
<span class="p">};</span>
<span class="k">enum</span> <span class="p">{</span>
<span class="n">OUTPUT_DIFF</span> <span class="o">=</span> <span class="p">(</span><span class="mi">1</span> <span class="o"><<</span> <span class="mi">0</span><span class="p">),</span>
<span class="n">OUTPUT_STAT</span> <span class="o">=</span> <span class="p">(</span><span class="mi">1</span> <span class="o"><<</span> <span class="mi">1</span><span class="p">),</span>
<span class="n">OUTPUT_SHORTSTAT</span> <span class="o">=</span> <span class="p">(</span><span class="mi">1</span> <span class="o"><<</span> <span class="mi">2</span><span class="p">),</span>
<span class="n">OUTPUT_NUMSTAT</span> <span class="o">=</span> <span class="p">(</span><span class="mi">1</span> <span class="o"><<</span> <span class="mi">3</span><span class="p">),</span>
<span class="n">OUTPUT_SUMMARY</span> <span class="o">=</span> <span class="p">(</span><span class="mi">1</span> <span class="o"><<</span> <span class="mi">4</span><span class="p">)</span>
<span class="p">};</span>
<span class="k">enum</span> <span class="p">{</span>
<span class="n">CACHE_NORMAL</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span>
<span class="n">CACHE_ONLY</span> <span class="o">=</span> <span class="mi">1</span><span class="p">,</span>
<span class="n">CACHE_NONE</span> <span class="o">=</span> <span class="mi">2</span>
<span class="p">};</span></pre></div>
</td>
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<tr id='section-3'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-3">¶</a>
</div>
<p>The 'diff_options' struct captures all the various parsed command line options.</p>
</td>
<td class=code>
<div class='highlight'><pre><span class="k">struct</span> <span class="n">diff_options</span> <span class="p">{</span>
<span class="n">git_diff_options</span> <span class="n">diffopts</span><span class="p">;</span>
<span class="n">git_diff_find_options</span> <span class="n">findopts</span><span class="p">;</span>
<span class="kt">int</span> <span class="n">color</span><span class="p">;</span>
<span class="kt">int</span> <span class="n">no_index</span><span class="p">;</span>
<span class="kt">int</span> <span class="n">cache</span><span class="p">;</span>
<span class="kt">int</span> <span class="n">output</span><span class="p">;</span>
<span class="n">git_diff_format_t</span> <span class="n">format</span><span class="p">;</span>
<span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">treeish1</span><span class="p">;</span>
<span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">treeish2</span><span class="p">;</span>
<span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">dir</span><span class="p">;</span>
<span class="p">};</span></pre></div>
</td>
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<tr id='section-4'>
<td class=docs>
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<a class="pilcrow" href="#section-4">¶</a>
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<p>These functions are implemented at the end</p>
</td>
<td class=code>
<div class='highlight'><pre><span class="k">static</span> <span class="kt">void</span> <span class="nf">usage</span><span class="p">(</span><span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">message</span><span class="p">,</span> <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">arg</span><span class="p">);</span>
<span class="k">static</span> <span class="kt">void</span> <span class="nf">parse_opts</span><span class="p">(</span><span class="k">struct</span> <span class="n">diff_options</span> <span class="o">*</span><span class="n">o</span><span class="p">,</span> <span class="kt">int</span> <span class="n">argc</span><span class="p">,</span> <span class="kt">char</span> <span class="o">*</span><span class="n">argv</span><span class="p">[]);</span>
<span class="k">static</span> <span class="kt">int</span> <span class="nf">color_printer</span><span class="p">(</span>
<span class="k">const</span> <span class="n">git_diff_delta</span><span class="o">*</span><span class="p">,</span> <span class="k">const</span> <span class="n">git_diff_hunk</span><span class="o">*</span><span class="p">,</span> <span class="k">const</span> <span class="n">git_diff_line</span><span class="o">*</span><span class="p">,</span> <span class="kt">void</span><span class="o">*</span><span class="p">);</span>
<span class="k">static</span> <span class="kt">void</span> <span class="nf">diff_print_stats</span><span class="p">(</span><span class="n">git_diff</span> <span class="o">*</span><span class="n">diff</span><span class="p">,</span> <span class="k">struct</span> <span class="n">diff_options</span> <span class="o">*</span><span class="n">o</span><span class="p">);</span>
<span class="k">static</span> <span class="kt">void</span> <span class="nf">compute_diff_no_index</span><span class="p">(</span><span class="n">git_diff</span> <span class="o">**</span><span class="n">diff</span><span class="p">,</span> <span class="k">struct</span> <span class="n">diff_options</span> <span class="o">*</span><span class="n">o</span><span class="p">);</span>
<span class="kt">int</span> <span class="nf">lg2_diff</span><span class="p">(</span><span class="n">git_repository</span> <span class="o">*</span><span class="n">repo</span><span class="p">,</span> <span class="kt">int</span> <span class="n">argc</span><span class="p">,</span> <span class="kt">char</span> <span class="o">*</span><span class="n">argv</span><span class="p">[])</span>
<span class="p">{</span>
<span class="n">git_tree</span> <span class="o">*</span><span class="n">t1</span> <span class="o">=</span> <span class="nb">NULL</span><span class="p">,</span> <span class="o">*</span><span class="n">t2</span> <span class="o">=</span> <span class="nb">NULL</span><span class="p">;</span>
<span class="n">git_diff</span> <span class="o">*</span><span class="n">diff</span><span class="p">;</span>
<span class="k">struct</span> <span class="n">diff_options</span> <span class="n">o</span> <span class="o">=</span> <span class="p">{</span>
<span class="n">GIT_DIFF_OPTIONS_INIT</span><span class="p">,</span> <span class="n">GIT_DIFF_FIND_OPTIONS_INIT</span><span class="p">,</span>
<span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">GIT_DIFF_FORMAT_PATCH</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">,</span> <span class="s">"."</span>
<span class="p">};</span>
<span class="n">parse_opts</span><span class="p">(</span><span class="o">&</span><span class="n">o</span><span class="p">,</span> <span class="n">argc</span><span class="p">,</span> <span class="n">argv</span><span class="p">);</span></pre></div>
</td>
</tr>
<tr id='section-5'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-5">¶</a>
</div>
<p>Possible argument patterns:</p>
<ul>
<li><sha1> <sha2></li>
<li><sha1> --cached</li>
<li><sha1></li>
<li>--cached</li>
<li>--nocache (don't use index data in diff at all)</li>
<li>--no-index <file1> <file2></li>
<li>nothing</li>
</ul>
<p>Currently ranged arguments like <sha1>..<sha2> and <sha1>...<sha2>
are not supported in this example</p>
</td>
<td class=code>
<div class='highlight'><pre> <span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="p">.</span><span class="n">no_index</span> <span class="o">>=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
<span class="n">compute_diff_no_index</span><span class="p">(</span><span class="o">&</span><span class="n">diff</span><span class="p">,</span> <span class="o">&</span><span class="n">o</span><span class="p">);</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="p">.</span><span class="n">treeish1</span><span class="p">)</span>
<span class="n">treeish_to_tree</span><span class="p">(</span><span class="o">&</span><span class="n">t1</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="n">o</span><span class="p">.</span><span class="n">treeish1</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="p">.</span><span class="n">treeish2</span><span class="p">)</span>
<span class="n">treeish_to_tree</span><span class="p">(</span><span class="o">&</span><span class="n">t2</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="n">o</span><span class="p">.</span><span class="n">treeish2</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">t1</span> <span class="o">&&</span> <span class="n">t2</span><span class="p">)</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_diff_tree_to_tree-4" class="fnlink" href="../../#HEAD/group/diff/git_diff_tree_to_tree">git_diff_tree_to_tree</a></span><span class="p">(</span><span class="o">&</span><span class="n">diff</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="n">t1</span><span class="p">,</span> <span class="n">t2</span><span class="p">,</span> <span class="o">&</span><span class="n">o</span><span class="p">.</span><span class="n">diffopts</span><span class="p">),</span>
<span class="s">"diff trees"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="p">.</span><span class="n">cache</span> <span class="o">!=</span> <span class="n">CACHE_NORMAL</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">t1</span><span class="p">)</span>
<span class="n">treeish_to_tree</span><span class="p">(</span><span class="o">&</span><span class="n">t1</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="s">"HEAD"</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="p">.</span><span class="n">cache</span> <span class="o">==</span> <span class="n">CACHE_NONE</span><span class="p">)</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_diff_tree_to_workdir-7" class="fnlink" href="../../#HEAD/group/diff/git_diff_tree_to_workdir">git_diff_tree_to_workdir</a></span><span class="p">(</span><span class="o">&</span><span class="n">diff</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="n">t1</span><span class="p">,</span> <span class="o">&</span><span class="n">o</span><span class="p">.</span><span class="n">diffopts</span><span class="p">),</span>
<span class="s">"diff tree to working directory"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="k">else</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_diff_tree_to_index-5" class="fnlink" href="../../#HEAD/group/diff/git_diff_tree_to_index">git_diff_tree_to_index</a></span><span class="p">(</span><span class="o">&</span><span class="n">diff</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="n">t1</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">,</span> <span class="o">&</span><span class="n">o</span><span class="p">.</span><span class="n">diffopts</span><span class="p">),</span>
<span class="s">"diff tree to index"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="n">t1</span><span class="p">)</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_diff_tree_to_workdir_with_index-8" class="fnlink" href="../../#HEAD/group/diff/git_diff_tree_to_workdir_with_index">git_diff_tree_to_workdir_with_index</a></span><span class="p">(</span><span class="o">&</span><span class="n">diff</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="n">t1</span><span class="p">,</span> <span class="o">&</span><span class="n">o</span><span class="p">.</span><span class="n">diffopts</span><span class="p">),</span>
<span class="s">"diff tree to working directory"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="k">else</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_diff_index_to_workdir-6" class="fnlink" href="../../#HEAD/group/diff/git_diff_index_to_workdir">git_diff_index_to_workdir</a></span><span class="p">(</span><span class="o">&</span><span class="n">diff</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">,</span> <span class="o">&</span><span class="n">o</span><span class="p">.</span><span class="n">diffopts</span><span class="p">),</span>
<span class="s">"diff index to working directory"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span></pre></div>
</td>
</tr>
<tr id='section-6'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-6">¶</a>
</div>
<p>Apply rename and copy detection if requested.</p>
</td>
<td class=code>
<div class='highlight'><pre> <span class="k">if</span> <span class="p">((</span><span class="n">o</span><span class="p">.</span><span class="n">findopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">&</span> <span class="n">GIT_DIFF_FIND_ALL</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">)</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_diff_find_similar-9" class="fnlink" href="../../#HEAD/group/diff/git_diff_find_similar">git_diff_find_similar</a></span><span class="p">(</span><span class="n">diff</span><span class="p">,</span> <span class="o">&</span><span class="n">o</span><span class="p">.</span><span class="n">findopts</span><span class="p">),</span>
<span class="s">"finding renames and copies"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="p">}</span></pre></div>
</td>
</tr>
<tr id='section-7'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-7">¶</a>
</div>
<p>Generate simple output using libgit2 display helper.</p>
</td>
<td class=code>
<div class='highlight'><pre> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">o</span><span class="p">.</span><span class="n">output</span><span class="p">)</span>
<span class="n">o</span><span class="p">.</span><span class="n">output</span> <span class="o">=</span> <span class="n">OUTPUT_DIFF</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="p">.</span><span class="n">output</span> <span class="o">!=</span> <span class="n">OUTPUT_DIFF</span><span class="p">)</span>
<span class="n">diff_print_stats</span><span class="p">(</span><span class="n">diff</span><span class="p">,</span> <span class="o">&</span><span class="n">o</span><span class="p">);</span>
<span class="k">if</span> <span class="p">((</span><span class="n">o</span><span class="p">.</span><span class="n">output</span> <span class="o">&</span> <span class="n">OUTPUT_DIFF</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="p">.</span><span class="n">color</span> <span class="o">>=</span> <span class="mi">0</span><span class="p">)</span>
<span class="n">fputs</span><span class="p">(</span><span class="n">colors</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">stdout</span><span class="p">);</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_diff_print-10" class="fnlink" href="../../#HEAD/group/diff/git_diff_print">git_diff_print</a></span><span class="p">(</span><span class="n">diff</span><span class="p">,</span> <span class="n">o</span><span class="p">.</span><span class="n">format</span><span class="p">,</span> <span class="n">color_printer</span><span class="p">,</span> <span class="o">&</span><span class="n">o</span><span class="p">.</span><span class="n">color</span><span class="p">),</span>
<span class="s">"displaying diff"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="p">.</span><span class="n">color</span> <span class="o">>=</span> <span class="mi">0</span><span class="p">)</span>
<span class="n">fputs</span><span class="p">(</span><span class="n">colors</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">stdout</span><span class="p">);</span>
<span class="p">}</span></pre></div>
</td>
</tr>
<tr id='section-8'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-8">¶</a>
</div>
<p>Cleanup before exiting.</p>
</td>
<td class=code>
<div class='highlight'><pre> <span class="n"><a name="git_diff_free-3" class="fnlink" href="../../#HEAD/group/diff/git_diff_free">git_diff_free</a></span><span class="p">(</span><span class="n">diff</span><span class="p">);</span>
<span class="n"><a name="git_tree_free-18" class="fnlink" href="../../#HEAD/group/tree/git_tree_free">git_tree_free</a></span><span class="p">(</span><span class="n">t1</span><span class="p">);</span>
<span class="n"><a name="git_tree_free-19" class="fnlink" href="../../#HEAD/group/tree/git_tree_free">git_tree_free</a></span><span class="p">(</span><span class="n">t2</span><span class="p">);</span>
<span class="k">return</span> <span class="mi">0</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">static</span> <span class="kt">void</span> <span class="nf">compute_diff_no_index</span><span class="p">(</span><span class="n">git_diff</span> <span class="o">**</span><span class="n">diff</span><span class="p">,</span> <span class="k">struct</span> <span class="n">diff_options</span> <span class="o">*</span><span class="n">o</span><span class="p">)</span> <span class="p">{</span>
<span class="n">git_patch</span> <span class="o">*</span><span class="n">patch</span> <span class="o">=</span> <span class="nb">NULL</span><span class="p">;</span>
<span class="kt">char</span> <span class="o">*</span><span class="n">file1_str</span> <span class="o">=</span> <span class="nb">NULL</span><span class="p">;</span>
<span class="kt">char</span> <span class="o">*</span><span class="n">file2_str</span> <span class="o">=</span> <span class="nb">NULL</span><span class="p">;</span>
<span class="n">git_buf</span> <span class="n">buf</span> <span class="o">=</span> <span class="p">{</span><span class="mi">0</span><span class="p">};</span>
<span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">o</span><span class="o">-></span><span class="n">treeish1</span> <span class="o">||</span> <span class="o">!</span><span class="n">o</span><span class="o">-></span><span class="n">treeish2</span><span class="p">)</span> <span class="p">{</span>
<span class="n">usage</span><span class="p">(</span><span class="s">"two files should be provided as arguments"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="p">}</span>
<span class="n">file1_str</span> <span class="o">=</span> <span class="n">read_file</span><span class="p">(</span><span class="n">o</span><span class="o">-></span><span class="n">treeish1</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">file1_str</span> <span class="o">==</span> <span class="nb">NULL</span><span class="p">)</span> <span class="p">{</span>
<span class="n">usage</span><span class="p">(</span><span class="s">"file cannot be read"</span><span class="p">,</span> <span class="n">o</span><span class="o">-></span><span class="n">treeish1</span><span class="p">);</span>
<span class="p">}</span>
<span class="n">file2_str</span> <span class="o">=</span> <span class="n">read_file</span><span class="p">(</span><span class="n">o</span><span class="o">-></span><span class="n">treeish2</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">file2_str</span> <span class="o">==</span> <span class="nb">NULL</span><span class="p">)</span> <span class="p">{</span>
<span class="n">usage</span><span class="p">(</span><span class="s">"file cannot be read"</span><span class="p">,</span> <span class="n">o</span><span class="o">-></span><span class="n">treeish2</span><span class="p">);</span>
<span class="p">}</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_patch_from_buffers-15" class="fnlink" href="../../#HEAD/group/patch/git_patch_from_buffers">git_patch_from_buffers</a></span><span class="p">(</span><span class="o">&</span><span class="n">patch</span><span class="p">,</span> <span class="n">file1_str</span><span class="p">,</span> <span class="n">strlen</span><span class="p">(</span><span class="n">file1_str</span><span class="p">),</span> <span class="n">o</span><span class="o">-></span><span class="n">treeish1</span><span class="p">,</span> <span class="n">file2_str</span><span class="p">,</span> <span class="n">strlen</span><span class="p">(</span><span class="n">file2_str</span><span class="p">),</span> <span class="n">o</span><span class="o">-></span><span class="n">treeish2</span><span class="p">,</span> <span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">),</span>
<span class="s">"patch buffers"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_patch_to_buf-17" class="fnlink" href="../../#HEAD/group/patch/git_patch_to_buf">git_patch_to_buf</a></span><span class="p">(</span><span class="o">&</span><span class="n">buf</span><span class="p">,</span> <span class="n">patch</span><span class="p">),</span>
<span class="s">"patch to buf"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_diff_from_buffer-11" class="fnlink" href="../../#HEAD/group/diff/git_diff_from_buffer">git_diff_from_buffer</a></span><span class="p">(</span><span class="n">diff</span><span class="p">,</span> <span class="n">buf</span><span class="p">.</span><span class="n">ptr</span><span class="p">,</span> <span class="n">buf</span><span class="p">.</span><span class="n">size</span><span class="p">),</span>
<span class="s">"diff from patch"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="n"><a name="git_patch_free-16" class="fnlink" href="../../#HEAD/group/patch/git_patch_free">git_patch_free</a></span><span class="p">(</span><span class="n">patch</span><span class="p">);</span>
<span class="n"><a name="git_buf_dispose-1" class="fnlink" href="../../#HEAD/group/buf/git_buf_dispose">git_buf_dispose</a></span><span class="p">(</span><span class="o">&</span><span class="n">buf</span><span class="p">);</span>
<span class="n">free</span><span class="p">(</span><span class="n">file1_str</span><span class="p">);</span>
<span class="n">free</span><span class="p">(</span><span class="n">file2_str</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">static</span> <span class="kt">void</span> <span class="nf">usage</span><span class="p">(</span><span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">message</span><span class="p">,</span> <span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">arg</span><span class="p">)</span>
<span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="n">message</span> <span class="o">&&</span> <span class="n">arg</span><span class="p">)</span>
<span class="n">fprintf</span><span class="p">(</span><span class="n">stderr</span><span class="p">,</span> <span class="s">"%s: %s</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">message</span><span class="p">,</span> <span class="n">arg</span><span class="p">);</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="n">message</span><span class="p">)</span>
<span class="n">fprintf</span><span class="p">(</span><span class="n">stderr</span><span class="p">,</span> <span class="s">"%s</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">message</span><span class="p">);</span>
<span class="n">fprintf</span><span class="p">(</span><span class="n">stderr</span><span class="p">,</span> <span class="s">"usage: diff [<tree-oid> [<tree-oid>]]</span><span class="se">\n</span><span class="s">"</span><span class="p">);</span>
<span class="n">exit</span><span class="p">(</span><span class="mi">1</span><span class="p">);</span>
<span class="p">}</span></pre></div>
</td>
</tr>
<tr id='section-9'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-9">¶</a>
</div>
<p>This implements very rudimentary colorized output.</p>
</td>
<td class=code>
<div class='highlight'><pre><span class="k">static</span> <span class="kt">int</span> <span class="nf">color_printer</span><span class="p">(</span>
<span class="k">const</span> <span class="n">git_diff_delta</span> <span class="o">*</span><span class="n">delta</span><span class="p">,</span>
<span class="k">const</span> <span class="n">git_diff_hunk</span> <span class="o">*</span><span class="n">hunk</span><span class="p">,</span>
<span class="k">const</span> <span class="n">git_diff_line</span> <span class="o">*</span><span class="n">line</span><span class="p">,</span>
<span class="kt">void</span> <span class="o">*</span><span class="n">data</span><span class="p">)</span>
<span class="p">{</span>
<span class="kt">int</span> <span class="o">*</span><span class="n">last_color</span> <span class="o">=</span> <span class="n">data</span><span class="p">,</span> <span class="n">color</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
<span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="n">delta</span><span class="p">;</span> <span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="n">hunk</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="o">*</span><span class="n">last_color</span> <span class="o">>=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
<span class="k">switch</span> <span class="p">(</span><span class="n">line</span><span class="o">-></span><span class="n">origin</span><span class="p">)</span> <span class="p">{</span>
<span class="k">case</span> <span class="nl">GIT_DIFF_LINE_ADDITION</span><span class="p">:</span> <span class="n">color</span> <span class="o">=</span> <span class="mi">3</span><span class="p">;</span> <span class="k">break</span><span class="p">;</span>
<span class="k">case</span> <span class="nl">GIT_DIFF_LINE_DELETION</span><span class="p">:</span> <span class="n">color</span> <span class="o">=</span> <span class="mi">2</span><span class="p">;</span> <span class="k">break</span><span class="p">;</span>
<span class="k">case</span> <span class="nl">GIT_DIFF_LINE_ADD_EOFNL</span><span class="p">:</span> <span class="n">color</span> <span class="o">=</span> <span class="mi">3</span><span class="p">;</span> <span class="k">break</span><span class="p">;</span>
<span class="k">case</span> <span class="nl">GIT_DIFF_LINE_DEL_EOFNL</span><span class="p">:</span> <span class="n">color</span> <span class="o">=</span> <span class="mi">2</span><span class="p">;</span> <span class="k">break</span><span class="p">;</span>
<span class="k">case</span> <span class="nl">GIT_DIFF_LINE_FILE_HDR</span><span class="p">:</span> <span class="n">color</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span> <span class="k">break</span><span class="p">;</span>
<span class="k">case</span> <span class="nl">GIT_DIFF_LINE_HUNK_HDR</span><span class="p">:</span> <span class="n">color</span> <span class="o">=</span> <span class="mi">4</span><span class="p">;</span> <span class="k">break</span><span class="p">;</span>
<span class="k">default</span><span class="o">:</span> <span class="k">break</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">if</span> <span class="p">(</span><span class="n">color</span> <span class="o">!=</span> <span class="o">*</span><span class="n">last_color</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="o">*</span><span class="n">last_color</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">||</span> <span class="n">color</span> <span class="o">==</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">fputs</span><span class="p">(</span><span class="n">colors</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">stdout</span><span class="p">);</span>
<span class="n">fputs</span><span class="p">(</span><span class="n">colors</span><span class="p">[</span><span class="n">color</span><span class="p">],</span> <span class="n">stdout</span><span class="p">);</span>
<span class="o">*</span><span class="n">last_color</span> <span class="o">=</span> <span class="n">color</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="k">return</span> <span class="n">diff_output</span><span class="p">(</span><span class="n">delta</span><span class="p">,</span> <span class="n">hunk</span><span class="p">,</span> <span class="n">line</span><span class="p">,</span> <span class="n">stdout</span><span class="p">);</span>
<span class="p">}</span></pre></div>
</td>
</tr>
<tr id='section-10'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-10">¶</a>
</div>
<p>Parse arguments as copied from git-diff.</p>
</td>
<td class=code>
<div class='highlight'><pre><span class="k">static</span> <span class="kt">void</span> <span class="nf">parse_opts</span><span class="p">(</span><span class="k">struct</span> <span class="n">diff_options</span> <span class="o">*</span><span class="n">o</span><span class="p">,</span> <span class="kt">int</span> <span class="n">argc</span><span class="p">,</span> <span class="kt">char</span> <span class="o">*</span><span class="n">argv</span><span class="p">[])</span>
<span class="p">{</span>
<span class="k">struct</span> <span class="n">args_info</span> <span class="n">args</span> <span class="o">=</span> <span class="n">ARGS_INFO_INIT</span><span class="p">;</span>
<span class="k">for</span> <span class="p">(</span><span class="n">args</span><span class="p">.</span><span class="n">pos</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span> <span class="n">args</span><span class="p">.</span><span class="n">pos</span> <span class="o"><</span> <span class="n">argc</span><span class="p">;</span> <span class="o">++</span><span class="n">args</span><span class="p">.</span><span class="n">pos</span><span class="p">)</span> <span class="p">{</span>
<span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">a</span> <span class="o">=</span> <span class="n">argv</span><span class="p">[</span><span class="n">args</span><span class="p">.</span><span class="n">pos</span><span class="p">];</span>
<span class="k">if</span> <span class="p">(</span><span class="n">a</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">!=</span> <span class="sc">'-'</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="o">-></span><span class="n">treeish1</span> <span class="o">==</span> <span class="nb">NULL</span><span class="p">)</span>
<span class="n">o</span><span class="o">-></span><span class="n">treeish1</span> <span class="o">=</span> <span class="n">a</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="o">-></span><span class="n">treeish2</span> <span class="o">==</span> <span class="nb">NULL</span><span class="p">)</span>
<span class="n">o</span><span class="o">-></span><span class="n">treeish2</span> <span class="o">=</span> <span class="n">a</span><span class="p">;</span>
<span class="k">else</span>
<span class="n">usage</span><span class="p">(</span><span class="s">"Only one or two tree identifiers can be provided"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"-p"</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"-u"</span><span class="p">)</span> <span class="o">||</span>
<span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--patch"</span><span class="p">))</span> <span class="p">{</span>
<span class="n">o</span><span class="o">-></span><span class="n">output</span> <span class="o">|=</span> <span class="n">OUTPUT_DIFF</span><span class="p">;</span>
<span class="n">o</span><span class="o">-></span><span class="n">format</span> <span class="o">=</span> <span class="n">GIT_DIFF_FORMAT_PATCH</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--cached"</span><span class="p">))</span> <span class="p">{</span>
<span class="n">o</span><span class="o">-></span><span class="n">cache</span> <span class="o">=</span> <span class="n">CACHE_ONLY</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="o">-></span><span class="n">no_index</span> <span class="o">>=</span> <span class="mi">0</span><span class="p">)</span> <span class="n">usage</span><span class="p">(</span><span class="s">"--cached and --no-index are incompatible"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--nocache"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">cache</span> <span class="o">=</span> <span class="n">CACHE_NONE</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--name-only"</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--format=name"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">format</span> <span class="o">=</span> <span class="n">GIT_DIFF_FORMAT_NAME_ONLY</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--name-status"</span><span class="p">)</span> <span class="o">||</span>
<span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--format=name-status"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">format</span> <span class="o">=</span> <span class="n">GIT_DIFF_FORMAT_NAME_STATUS</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--raw"</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--format=raw"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">format</span> <span class="o">=</span> <span class="n">GIT_DIFF_FORMAT_RAW</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--format=diff-index"</span><span class="p">))</span> <span class="p">{</span>
<span class="n">o</span><span class="o">-></span><span class="n">format</span> <span class="o">=</span> <span class="n">GIT_DIFF_FORMAT_RAW</span><span class="p">;</span>
<span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">id_abbrev</span> <span class="o">=</span> <span class="mi">40</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--no-index"</span><span class="p">))</span> <span class="p">{</span>
<span class="n">o</span><span class="o">-></span><span class="n">no_index</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="o">-></span><span class="n">cache</span> <span class="o">==</span> <span class="n">CACHE_ONLY</span><span class="p">)</span> <span class="n">usage</span><span class="p">(</span><span class="s">"--cached and --no-index are incompatible"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--color"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">color</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--no-color"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">color</span> <span class="o">=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"-R"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_REVERSE</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"-a"</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--text"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_FORCE_TEXT</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--ignore-space-at-eol"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_IGNORE_WHITESPACE_EOL</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"-b"</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--ignore-space-change"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_IGNORE_WHITESPACE_CHANGE</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"-w"</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--ignore-all-space"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_IGNORE_WHITESPACE</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--ignored"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_INCLUDE_IGNORED</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--untracked"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_INCLUDE_UNTRACKED</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--patience"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_PATIENCE</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--minimal"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_MINIMAL</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--stat"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">output</span> <span class="o">|=</span> <span class="n">OUTPUT_STAT</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--numstat"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">output</span> <span class="o">|=</span> <span class="n">OUTPUT_NUMSTAT</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--shortstat"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">output</span> <span class="o">|=</span> <span class="n">OUTPUT_SHORTSTAT</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--summary"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">output</span> <span class="o">|=</span> <span class="n">OUTPUT_SUMMARY</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="n">match_uint16_arg</span><span class="p">(</span>
<span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">findopts</span><span class="p">.</span><span class="n">rename_threshold</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"-M"</span><span class="p">)</span> <span class="o">||</span>
<span class="n">match_uint16_arg</span><span class="p">(</span>
<span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">findopts</span><span class="p">.</span><span class="n">rename_threshold</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"--find-renames"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">findopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_FIND_RENAMES</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="n">match_uint16_arg</span><span class="p">(</span>
<span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">findopts</span><span class="p">.</span><span class="n">copy_threshold</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"-C"</span><span class="p">)</span> <span class="o">||</span>
<span class="n">match_uint16_arg</span><span class="p">(</span>
<span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">findopts</span><span class="p">.</span><span class="n">copy_threshold</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"--find-copies"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">findopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_FIND_COPIES</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--find-copies-harder"</span><span class="p">))</span>
<span class="n">o</span><span class="o">-></span><span class="n">findopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_FIND_COPIES_FROM_UNMODIFIED</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="n">is_prefixed</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"-B"</span><span class="p">)</span> <span class="o">||</span> <span class="n">is_prefixed</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s">"--break-rewrites"</span><span class="p">))</span>
<span class="cm">/* TODO: parse thresholds */</span>
<span class="n">o</span><span class="o">-></span><span class="n">findopts</span><span class="p">.</span><span class="n">flags</span> <span class="o">|=</span> <span class="n">GIT_DIFF_FIND_REWRITES</span><span class="p">;</span>
<span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">match_uint32_arg</span><span class="p">(</span>
<span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">context_lines</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"-U"</span><span class="p">)</span> <span class="o">&&</span>
<span class="o">!</span><span class="n">match_uint32_arg</span><span class="p">(</span>
<span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">context_lines</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"--unified"</span><span class="p">)</span> <span class="o">&&</span>
<span class="o">!</span><span class="n">match_uint32_arg</span><span class="p">(</span>
<span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">interhunk_lines</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"--inter-hunk-context"</span><span class="p">)</span> <span class="o">&&</span>
<span class="o">!</span><span class="n">match_uint16_arg</span><span class="p">(</span>
<span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">id_abbrev</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"--abbrev"</span><span class="p">)</span> <span class="o">&&</span>
<span class="o">!</span><span class="n">match_str_arg</span><span class="p">(</span><span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">old_prefix</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"--src-prefix"</span><span class="p">)</span> <span class="o">&&</span>
<span class="o">!</span><span class="n">match_str_arg</span><span class="p">(</span><span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">diffopts</span><span class="p">.</span><span class="n">new_prefix</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"--dst-prefix"</span><span class="p">)</span> <span class="o">&&</span>
<span class="o">!</span><span class="n">match_str_arg</span><span class="p">(</span><span class="o">&</span><span class="n">o</span><span class="o">-></span><span class="n">dir</span><span class="p">,</span> <span class="o">&</span><span class="n">args</span><span class="p">,</span> <span class="s">"--git-dir"</span><span class="p">))</span>
<span class="n">usage</span><span class="p">(</span><span class="s">"Unknown command line argument"</span><span class="p">,</span> <span class="n">a</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">}</span></pre></div>
</td>
</tr>
<tr id='section-11'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-11">¶</a>
</div>
<p>Display diff output with "--stat", "--numstat", or "--shortstat"</p>
</td>
<td class=code>
<div class='highlight'><pre><span class="k">static</span> <span class="kt">void</span> <span class="nf">diff_print_stats</span><span class="p">(</span><span class="n">git_diff</span> <span class="o">*</span><span class="n">diff</span><span class="p">,</span> <span class="k">struct</span> <span class="n">diff_options</span> <span class="o">*</span><span class="n">o</span><span class="p">)</span>
<span class="p">{</span>
<span class="n">git_diff_stats</span> <span class="o">*</span><span class="n">stats</span><span class="p">;</span>
<span class="n">git_buf</span> <span class="n">b</span> <span class="o">=</span> <span class="n">GIT_BUF_INIT</span><span class="p">;</span>
<span class="n">git_diff_stats_format_t</span> <span class="n">format</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_diff_get_stats-12" class="fnlink" href="../../#HEAD/group/diff/git_diff_get_stats">git_diff_get_stats</a></span><span class="p">(</span><span class="o">&</span><span class="n">stats</span><span class="p">,</span> <span class="n">diff</span><span class="p">),</span> <span class="s">"generating stats for diff"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="o">-></span><span class="n">output</span> <span class="o">&</span> <span class="n">OUTPUT_STAT</span><span class="p">)</span>
<span class="n">format</span> <span class="o">|=</span> <span class="n">GIT_DIFF_STATS_FULL</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="o">-></span><span class="n">output</span> <span class="o">&</span> <span class="n">OUTPUT_SHORTSTAT</span><span class="p">)</span>
<span class="n">format</span> <span class="o">|=</span> <span class="n">GIT_DIFF_STATS_SHORT</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="o">-></span><span class="n">output</span> <span class="o">&</span> <span class="n">OUTPUT_NUMSTAT</span><span class="p">)</span>
<span class="n">format</span> <span class="o">|=</span> <span class="n">GIT_DIFF_STATS_NUMBER</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n">o</span><span class="o">-></span><span class="n">output</span> <span class="o">&</span> <span class="n">OUTPUT_SUMMARY</span><span class="p">)</span>
<span class="n">format</span> <span class="o">|=</span> <span class="n">GIT_DIFF_STATS_INCLUDE_SUMMARY</span><span class="p">;</span>
<span class="n">check_lg2</span><span class="p">(</span>
<span class="n"><a name="git_diff_stats_to_buf-13" class="fnlink" href="../../#HEAD/group/diff/git_diff_stats_to_buf">git_diff_stats_to_buf</a></span><span class="p">(</span><span class="o">&</span><span class="n">b</span><span class="p">,</span> <span class="n">stats</span><span class="p">,</span> <span class="n">format</span><span class="p">,</span> <span class="mi">80</span><span class="p">),</span> <span class="s">"formatting stats"</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="n">fputs</span><span class="p">(</span><span class="n">b</span><span class="p">.</span><span class="n">ptr</span><span class="p">,</span> <span class="n">stdout</span><span class="p">);</span>
<span class="n"><a name="git_buf_dispose-2" class="fnlink" href="../../#HEAD/group/buf/git_buf_dispose">git_buf_dispose</a></span><span class="p">(</span><span class="o">&</span><span class="n">b</span><span class="p">);</span>
<span class="n"><a name="git_diff_stats_free-14" class="fnlink" href="../../#HEAD/group/diff/git_diff_stats_free">git_diff_stats_free</a></span><span class="p">(</span><span class="n">stats</span><span class="p">);</span>
<span class="p">}</span></pre></div>
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</tr>
</table>
</div>
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