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<th class=docs><h1>commit.c</h1></th>
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<div class='highlight'><pre><span></span><span class="cm">/*</span>
<span class="cm"> * libgit2 &quot;commit&quot; example - shows how to create a git commit</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"> * &lt;http://creativecommons.org/publicdomain/zero/1.0/&gt;.</span>
<span class="cm"> */</span>
<span class="cp">#include</span> <span class="cpf">&quot;common.h&quot;</span><span class="cp"></span></pre></div>
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<p>This example demonstrates the libgit2 commit APIs to roughly
simulate <code>git commit</code> with the commit message argument.</p>
<p>This does not have:</p>
<ul>
<li>Robust error handling</li>
<li>Most of the <code>git commit</code> options</li>
</ul>
<p>This does have:</p>
<ul>
<li>Example of performing a git commit with a comment</li>
</ul>
</td>
<td class=code>
<div class='highlight'><pre><span class="kt">int</span> <span class="nf">lg2_commit</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="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">opt</span> <span class="o">=</span> <span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">];</span>
<span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">comment</span> <span class="o">=</span> <span class="n">argv</span><span class="p">[</span><span class="mi">2</span><span class="p">];</span>
<span class="kt">int</span> <span class="n">error</span><span class="p">;</span>
<span class="n">git_oid</span> <span class="n">commit_oid</span><span class="p">,</span><span class="n">tree_oid</span><span class="p">;</span>
<span class="n">git_tree</span> <span class="o">*</span><span class="n">tree</span><span class="p">;</span>
<span class="n">git_index</span> <span class="o">*</span><span class="n">index</span><span class="p">;</span>
<span class="n">git_object</span> <span class="o">*</span><span class="n">parent</span> <span class="o">=</span> <span class="nb">NULL</span><span class="p">;</span>
<span class="n">git_reference</span> <span class="o">*</span><span class="n">ref</span> <span class="o">=</span> <span class="nb">NULL</span><span class="p">;</span>
<span class="n">git_signature</span> <span class="o">*</span><span class="n">author_signature</span><span class="p">,</span> <span class="o">*</span><span class="n">committer_signature</span><span class="p">;</span>
<span class="cm">/* Validate args */</span>
<span class="k">if</span> <span class="p">(</span><span class="n">argc</span> <span class="o">&lt;</span> <span class="mi">3</span> <span class="o">||</span> <span class="n">strcmp</span><span class="p">(</span><span class="n">opt</span><span class="p">,</span> <span class="s">&quot;-m&quot;</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
<span class="n">printf</span> <span class="p">(</span><span class="s">&quot;USAGE: %s -m &lt;comment&gt;</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">,</span> <span class="n">argv</span><span class="p">[</span><span class="mi">0</span><span class="p">]);</span>
<span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
<span class="p">}</span>
<span class="n">error</span> <span class="o">=</span> <span class="n"><a name="git_revparse_ext-9" class="fnlink" href="../../#HEAD/group/revparse/git_revparse_ext">git_revparse_ext</a></span><span class="p">(</span><span class="o">&amp;</span><span class="n">parent</span><span class="p">,</span> <span class="o">&amp;</span><span class="n">ref</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="s">&quot;HEAD&quot;</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">error</span> <span class="o">==</span> <span class="n">GIT_ENOTFOUND</span><span class="p">)</span> <span class="p">{</span>
<span class="n">printf</span><span class="p">(</span><span class="s">&quot;HEAD not found. Creating first commit</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">);</span>
<span class="n">error</span> <span class="o">=</span> <span class="mi">0</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">error</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
<span class="k">const</span> <span class="n">git_error</span> <span class="o">*</span><span class="n">err</span> <span class="o">=</span> <span class="n"><a name="git_error_last-2" class="fnlink" href="../../#HEAD/group/error/git_error_last">git_error_last</a></span><span class="p">();</span>
<span class="k">if</span> <span class="p">(</span><span class="n">err</span><span class="p">)</span> <span class="n">printf</span><span class="p">(</span><span class="s">&quot;ERROR %d: %s</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">,</span> <span class="n">err</span><span class="o">-&gt;</span><span class="n">klass</span><span class="p">,</span> <span class="n">err</span><span class="o">-&gt;</span><span class="n">message</span><span class="p">);</span>
<span class="k">else</span> <span class="n">printf</span><span class="p">(</span><span class="s">&quot;ERROR %d: no detailed info</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">,</span> <span class="n">error</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_repository_index-8" class="fnlink" href="../../#HEAD/group/repository/git_repository_index">git_repository_index</a></span><span class="p">(</span><span class="o">&amp;</span><span class="n">index</span><span class="p">,</span> <span class="n">repo</span><span class="p">),</span> <span class="s">&quot;Could not open repository index&quot;</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_index_write_tree-5" class="fnlink" href="../../#HEAD/group/index/git_index_write_tree">git_index_write_tree</a></span><span class="p">(</span><span class="o">&amp;</span><span class="n">tree_oid</span><span class="p">,</span> <span class="n">index</span><span class="p">),</span> <span class="s">&quot;Could not write tree&quot;</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_index_write-4" class="fnlink" href="../../#HEAD/group/index/git_index_write">git_index_write</a></span><span class="p">(</span><span class="n">index</span><span class="p">),</span> <span class="s">&quot;Could not write index&quot;</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_tree_lookup-13" class="fnlink" href="../../#HEAD/group/tree/git_tree_lookup">git_tree_lookup</a></span><span class="p">(</span><span class="o">&amp;</span><span class="n">tree</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="o">&amp;</span><span class="n">tree_oid</span><span class="p">),</span> <span class="s">&quot;Error looking up tree&quot;</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_signature_default_from_env-10" class="fnlink" href="../../#HEAD/group/signature/git_signature_default_from_env">git_signature_default_from_env</a></span><span class="p">(</span><span class="o">&amp;</span><span class="n">author_signature</span><span class="p">,</span> <span class="o">&amp;</span><span class="n">committer_signature</span><span class="p">,</span> <span class="n">repo</span><span class="p">),</span>
<span class="s">&quot;Error creating signature&quot;</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_commit_create_v-1" class="fnlink" href="../../#HEAD/group/commit/git_commit_create_v">git_commit_create_v</a></span><span class="p">(</span>
<span class="o">&amp;</span><span class="n">commit_oid</span><span class="p">,</span>
<span class="n">repo</span><span class="p">,</span>
<span class="s">&quot;HEAD&quot;</span><span class="p">,</span>
<span class="n">author_signature</span><span class="p">,</span>
<span class="n">committer_signature</span><span class="p">,</span>
<span class="nb">NULL</span><span class="p">,</span>
<span class="n">comment</span><span class="p">,</span>
<span class="n">tree</span><span class="p">,</span>
<span class="n">parent</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="mi">0</span><span class="p">,</span> <span class="n">parent</span><span class="p">),</span> <span class="s">&quot;Error creating commit&quot;</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">);</span>
<span class="n"><a name="git_index_free-3" class="fnlink" href="../../#HEAD/group/index/git_index_free">git_index_free</a></span><span class="p">(</span><span class="n">index</span><span class="p">);</span>
<span class="n"><a name="git_signature_free-11" class="fnlink" href="../../#HEAD/group/signature/git_signature_free">git_signature_free</a></span><span class="p">(</span><span class="n">author_signature</span><span class="p">);</span>
<span class="n"><a name="git_signature_free-12" class="fnlink" href="../../#HEAD/group/signature/git_signature_free">git_signature_free</a></span><span class="p">(</span><span class="n">committer_signature</span><span class="p">);</span>
<span class="n"><a name="git_tree_free-14" class="fnlink" href="../../#HEAD/group/tree/git_tree_free">git_tree_free</a></span><span class="p">(</span><span class="n">tree</span><span class="p">);</span>
<span class="n"><a name="git_object_free-6" class="fnlink" href="../../#HEAD/group/object/git_object_free">git_object_free</a></span><span class="p">(</span><span class="n">parent</span><span class="p">);</span>
<span class="n"><a name="git_reference_free-7" class="fnlink" href="../../#HEAD/group/reference/git_reference_free">git_reference_free</a></span><span class="p">(</span><span class="n">ref</span><span class="p">);</span>
<span class="k">return</span> <span class="n">error</span><span class="p">;</span>
<span class="p">}</span></pre></div>
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